erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 28 | #include "v8.h" |
| 29 | |
| 30 | #if defined(V8_TARGET_ARCH_IA32) |
| 31 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 32 | #include "ia32/lithium-codegen-ia32.h" |
| 33 | #include "code-stubs.h" |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 34 | #include "deoptimizer.h" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 35 | #include "stub-cache.h" |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 36 | #include "codegen.h" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 37 | |
| 38 | namespace v8 { |
| 39 | namespace internal { |
| 40 | |
| 41 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 42 | // When invoking builtins, we need to record the safepoint in the middle of |
| 43 | // the invoke instruction sequence generated by the macro assembler. |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 44 | class SafepointGenerator : public CallWrapper { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 45 | public: |
| 46 | SafepointGenerator(LCodeGen* codegen, |
| 47 | LPointerMap* pointers, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 48 | Safepoint::DeoptMode mode) |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 49 | : codegen_(codegen), |
| 50 | pointers_(pointers), |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 51 | deopt_mode_(mode) {} |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 52 | virtual ~SafepointGenerator() { } |
| 53 | |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 54 | virtual void BeforeCall(int call_size) const {} |
| 55 | |
| 56 | virtual void AfterCall() const { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 57 | codegen_->RecordSafepoint(pointers_, deopt_mode_); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | private: |
| 61 | LCodeGen* codegen_; |
| 62 | LPointerMap* pointers_; |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 63 | Safepoint::DeoptMode deopt_mode_; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | |
| 67 | #define __ masm()-> |
| 68 | |
| 69 | bool LCodeGen::GenerateCode() { |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 70 | HPhase phase("Z_Code generation", chunk()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 71 | ASSERT(is_unused()); |
| 72 | status_ = GENERATING; |
| 73 | CpuFeatures::Scope scope(SSE2); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 74 | |
| 75 | CodeStub::GenerateFPStubs(); |
| 76 | |
| 77 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 78 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 79 | // the frame (that is done in GeneratePrologue). |
| 80 | FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 81 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 82 | dynamic_frame_alignment_ = (chunk()->num_double_slots() > 2 && |
| 83 | !chunk()->graph()->is_recursive()) || |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 84 | !info()->osr_ast_id().IsNone(); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 85 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 86 | return GeneratePrologue() && |
| 87 | GenerateBody() && |
| 88 | GenerateDeferredCode() && |
| 89 | GenerateSafepointTable(); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | void LCodeGen::FinishCode(Handle<Code> code) { |
| 94 | ASSERT(is_done()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 95 | code->set_stack_slots(GetStackSlotCount()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 96 | code->set_safepoint_table_offset(safepoints_.GetCodeOffset()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 97 | PopulateDeoptimizationData(code); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 98 | Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(code); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 102 | void LCodeGen::Abort(const char* reason) { |
| 103 | info()->set_bailout_reason(reason); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 104 | status_ = ABORTED; |
| 105 | } |
| 106 | |
| 107 | |
| 108 | void LCodeGen::Comment(const char* format, ...) { |
| 109 | if (!FLAG_code_comments) return; |
| 110 | char buffer[4 * KB]; |
| 111 | StringBuilder builder(buffer, ARRAY_SIZE(buffer)); |
| 112 | va_list arguments; |
| 113 | va_start(arguments, format); |
| 114 | builder.AddFormattedList(format, arguments); |
| 115 | va_end(arguments); |
| 116 | |
| 117 | // Copy the string before recording it in the assembler to avoid |
| 118 | // issues when the stack allocated buffer goes out of scope. |
| 119 | size_t length = builder.position(); |
| 120 | Vector<char> copy = Vector<char>::New(length + 1); |
| 121 | memcpy(copy.start(), builder.Finalize(), copy.length()); |
| 122 | masm()->RecordComment(copy.start()); |
| 123 | } |
| 124 | |
| 125 | |
| 126 | bool LCodeGen::GeneratePrologue() { |
| 127 | ASSERT(is_generating()); |
| 128 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 129 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 130 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 131 | #ifdef DEBUG |
| 132 | if (strlen(FLAG_stop_at) > 0 && |
| 133 | info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { |
| 134 | __ int3(); |
| 135 | } |
| 136 | #endif |
| 137 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 138 | // Strict mode functions and builtins need to replace the receiver |
| 139 | // with undefined when called as functions (without an explicit |
| 140 | // receiver object). ecx is zero for method calls and non-zero for |
| 141 | // function calls. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 142 | if (!info_->is_classic_mode() || info_->is_native()) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 143 | Label ok; |
| 144 | __ test(ecx, Operand(ecx)); |
| 145 | __ j(zero, &ok, Label::kNear); |
| 146 | // +1 for return address. |
| 147 | int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 148 | __ mov(Operand(esp, receiver_offset), |
| 149 | Immediate(isolate()->factory()->undefined_value())); |
| 150 | __ bind(&ok); |
| 151 | } |
| 152 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 153 | |
| 154 | if (dynamic_frame_alignment_) { |
| 155 | // Move state of dynamic frame alignment into edx. |
| 156 | __ mov(edx, Immediate(kNoAlignmentPadding)); |
| 157 | |
| 158 | Label do_not_pad, align_loop; |
| 159 | STATIC_ASSERT(kDoubleSize == 2 * kPointerSize); |
| 160 | // Align esp + 4 to a multiple of 2 * kPointerSize. |
| 161 | __ test(esp, Immediate(kPointerSize)); |
| 162 | __ j(not_zero, &do_not_pad, Label::kNear); |
| 163 | __ push(Immediate(0)); |
| 164 | __ mov(ebx, esp); |
| 165 | __ mov(edx, Immediate(kAlignmentPaddingPushed)); |
| 166 | // Copy arguments, receiver, and return address. |
| 167 | __ mov(ecx, Immediate(scope()->num_parameters() + 2)); |
| 168 | |
| 169 | __ bind(&align_loop); |
| 170 | __ mov(eax, Operand(ebx, 1 * kPointerSize)); |
| 171 | __ mov(Operand(ebx, 0), eax); |
| 172 | __ add(Operand(ebx), Immediate(kPointerSize)); |
| 173 | __ dec(ecx); |
| 174 | __ j(not_zero, &align_loop, Label::kNear); |
| 175 | __ mov(Operand(ebx, 0), Immediate(kAlignmentZapValue)); |
| 176 | __ bind(&do_not_pad); |
| 177 | } |
| 178 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 179 | __ push(ebp); // Caller's frame pointer. |
| 180 | __ mov(ebp, esp); |
| 181 | __ push(esi); // Callee's context. |
| 182 | __ push(edi); // Callee's JS function. |
| 183 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 184 | if (dynamic_frame_alignment_ && FLAG_debug_code) { |
| 185 | __ test(esp, Immediate(kPointerSize)); |
| 186 | __ Assert(zero, "frame is expected to be aligned"); |
| 187 | } |
| 188 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 189 | // Reserve space for the stack slots needed by the code. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 190 | int slots = GetStackSlotCount(); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 191 | ASSERT_GE(slots, 1); |
| 192 | if (slots == 1) { |
| 193 | if (dynamic_frame_alignment_) { |
| 194 | __ push(edx); |
| 195 | } else { |
| 196 | __ push(Immediate(kNoAlignmentPadding)); |
| 197 | } |
| 198 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 199 | if (FLAG_debug_code) { |
| 200 | __ mov(Operand(eax), Immediate(slots)); |
| 201 | Label loop; |
| 202 | __ bind(&loop); |
| 203 | __ push(Immediate(kSlotsZapValue)); |
| 204 | __ dec(eax); |
| 205 | __ j(not_zero, &loop); |
| 206 | } else { |
| 207 | __ sub(Operand(esp), Immediate(slots * kPointerSize)); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 208 | #ifdef _MSC_VER |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 209 | // On windows, you may not access the stack more than one page below |
| 210 | // the most recently mapped page. To make the allocated area randomly |
| 211 | // accessible, we write to each page in turn (the value is irrelevant). |
| 212 | const int kPageSize = 4 * KB; |
| 213 | for (int offset = slots * kPointerSize - kPageSize; |
| 214 | offset > 0; |
| 215 | offset -= kPageSize) { |
| 216 | __ mov(Operand(esp, offset), eax); |
| 217 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 218 | #endif |
| 219 | } |
| 220 | |
| 221 | // Store dynamic frame alignment state in the first local. |
| 222 | if (dynamic_frame_alignment_) { |
| 223 | __ mov(Operand(ebp, |
| 224 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset), |
| 225 | edx); |
| 226 | } else { |
| 227 | __ mov(Operand(ebp, |
| 228 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset), |
| 229 | Immediate(kNoAlignmentPadding)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 230 | } |
| 231 | } |
| 232 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 233 | // Possibly allocate a local context. |
| 234 | int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 235 | if (heap_slots > 0) { |
| 236 | Comment(";;; Allocate local context"); |
| 237 | // Argument to NewContext is the function, which is still in edi. |
| 238 | __ push(edi); |
| 239 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 240 | FastNewContextStub stub(heap_slots); |
| 241 | __ CallStub(&stub); |
| 242 | } else { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 243 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 244 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 245 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 246 | // Context is returned in both eax and esi. It replaces the context |
| 247 | // passed to us. It's saved in the stack and kept live in esi. |
| 248 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi); |
| 249 | |
| 250 | // Copy parameters into context if necessary. |
| 251 | int num_parameters = scope()->num_parameters(); |
| 252 | for (int i = 0; i < num_parameters; i++) { |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 253 | Variable* var = scope()->parameter(i); |
| 254 | if (var->IsContextSlot()) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 255 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 256 | (num_parameters - 1 - i) * kPointerSize; |
| 257 | // Load parameter from stack. |
| 258 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 259 | // Store it in the context. |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 260 | int context_offset = Context::SlotOffset(var->index()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 261 | __ mov(Operand(esi, context_offset), eax); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 262 | // Update the write barrier. This clobbers eax and ebx. |
| 263 | __ RecordWriteContextSlot(esi, |
| 264 | context_offset, |
| 265 | eax, |
| 266 | ebx, |
| 267 | kDontSaveFPRegs); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 268 | } |
| 269 | } |
| 270 | Comment(";;; End allocate local context"); |
| 271 | } |
| 272 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 273 | // Trace the call. |
| 274 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 275 | // We have not executed any compiled code yet, so esi still holds the |
| 276 | // incoming context. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 277 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 278 | } |
| 279 | return !is_aborted(); |
| 280 | } |
| 281 | |
| 282 | |
| 283 | bool LCodeGen::GenerateBody() { |
| 284 | ASSERT(is_generating()); |
| 285 | bool emit_instructions = true; |
| 286 | for (current_instruction_ = 0; |
| 287 | !is_aborted() && current_instruction_ < instructions_->length(); |
| 288 | current_instruction_++) { |
| 289 | LInstruction* instr = instructions_->at(current_instruction_); |
| 290 | if (instr->IsLabel()) { |
| 291 | LLabel* label = LLabel::cast(instr); |
| 292 | emit_instructions = !label->HasReplacement(); |
| 293 | } |
| 294 | |
| 295 | if (emit_instructions) { |
| 296 | Comment(";;; @%d: %s.", current_instruction_, instr->Mnemonic()); |
| 297 | instr->CompileToNative(this); |
| 298 | } |
| 299 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 300 | EnsureSpaceForLazyDeopt(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 301 | return !is_aborted(); |
| 302 | } |
| 303 | |
| 304 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 305 | bool LCodeGen::GenerateDeferredCode() { |
| 306 | ASSERT(is_generating()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 307 | if (deferred_.length() > 0) { |
| 308 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 309 | LDeferredCode* code = deferred_[i]; |
| 310 | __ bind(code->entry()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 311 | Comment(";;; Deferred code @%d: %s.", |
| 312 | code->instruction_index(), |
| 313 | code->instr()->Mnemonic()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 314 | code->Generate(); |
| 315 | __ jmp(code->exit()); |
| 316 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | // Deferred code is the last part of the instruction sequence. Mark |
| 320 | // the generated code as done unless we bailed out. |
| 321 | if (!is_aborted()) status_ = DONE; |
| 322 | return !is_aborted(); |
| 323 | } |
| 324 | |
| 325 | |
| 326 | bool LCodeGen::GenerateSafepointTable() { |
| 327 | ASSERT(is_done()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 328 | safepoints_.Emit(masm(), GetStackSlotCount()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 329 | return !is_aborted(); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | Register LCodeGen::ToRegister(int index) const { |
| 334 | return Register::FromAllocationIndex(index); |
| 335 | } |
| 336 | |
| 337 | |
| 338 | XMMRegister LCodeGen::ToDoubleRegister(int index) const { |
| 339 | return XMMRegister::FromAllocationIndex(index); |
| 340 | } |
| 341 | |
| 342 | |
| 343 | Register LCodeGen::ToRegister(LOperand* op) const { |
| 344 | ASSERT(op->IsRegister()); |
| 345 | return ToRegister(op->index()); |
| 346 | } |
| 347 | |
| 348 | |
| 349 | XMMRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
| 350 | ASSERT(op->IsDoubleRegister()); |
| 351 | return ToDoubleRegister(op->index()); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | int LCodeGen::ToInteger32(LConstantOperand* op) const { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 356 | HConstant* constant = chunk_->LookupConstant(op); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 357 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsInteger32()); |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 358 | ASSERT(constant->HasInteger32Value()); |
| 359 | return constant->Integer32Value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 363 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 364 | HConstant* constant = chunk_->LookupConstant(op); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 365 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsTagged()); |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 366 | return constant->handle(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 370 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 371 | HConstant* constant = chunk_->LookupConstant(op); |
| 372 | ASSERT(constant->HasDoubleValue()); |
| 373 | return constant->DoubleValue(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 377 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
| 378 | return chunk_->LookupLiteralRepresentation(op).IsInteger32(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 379 | } |
| 380 | |
| 381 | |
| 382 | Operand LCodeGen::ToOperand(LOperand* op) const { |
| 383 | if (op->IsRegister()) return Operand(ToRegister(op)); |
| 384 | if (op->IsDoubleRegister()) return Operand(ToDoubleRegister(op)); |
| 385 | ASSERT(op->IsStackSlot() || op->IsDoubleStackSlot()); |
| 386 | int index = op->index(); |
| 387 | if (index >= 0) { |
| 388 | // Local or spill slot. Skip the frame pointer, function, and |
| 389 | // context in the fixed part of the frame. |
| 390 | return Operand(ebp, -(index + 3) * kPointerSize); |
| 391 | } else { |
| 392 | // Incoming parameter. Skip the return address. |
| 393 | return Operand(ebp, -(index - 1) * kPointerSize); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 398 | Operand LCodeGen::HighOperand(LOperand* op) { |
| 399 | ASSERT(op->IsDoubleStackSlot()); |
| 400 | int index = op->index(); |
| 401 | int offset = (index >= 0) ? index + 3 : index - 1; |
| 402 | return Operand(ebp, -offset * kPointerSize); |
| 403 | } |
| 404 | |
| 405 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 406 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 407 | Translation* translation, |
| 408 | int* arguments_index, |
| 409 | int* arguments_count) { |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 410 | if (environment == NULL) return; |
| 411 | |
| 412 | // The translation includes one command per value in the environment. |
| 413 | int translation_size = environment->values()->length(); |
| 414 | // The output frame height does not include the parameters. |
| 415 | int height = translation_size - environment->parameter_count(); |
| 416 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 417 | // Function parameters are arguments to the outermost environment. The |
| 418 | // arguments index points to the first element of a sequence of tagged |
| 419 | // values on the stack that represent the arguments. This needs to be |
| 420 | // kept in sync with the LArgumentsElements implementation. |
| 421 | *arguments_index = -environment->parameter_count(); |
| 422 | *arguments_count = environment->parameter_count(); |
| 423 | |
| 424 | WriteTranslation(environment->outer(), |
| 425 | translation, |
| 426 | arguments_index, |
| 427 | arguments_count); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 428 | int closure_id = *info()->closure() != *environment->closure() |
| 429 | ? DefineDeoptimizationLiteral(environment->closure()) |
| 430 | : Translation::kSelfLiteralId; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 431 | switch (environment->frame_type()) { |
| 432 | case JS_FUNCTION: |
| 433 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 434 | break; |
| 435 | case JS_CONSTRUCT: |
| 436 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 437 | break; |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 438 | case JS_GETTER: |
| 439 | ASSERT(translation_size == 1); |
| 440 | ASSERT(height == 0); |
| 441 | translation->BeginGetterStubFrame(closure_id); |
| 442 | break; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 443 | case JS_SETTER: |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 444 | ASSERT(translation_size == 2); |
| 445 | ASSERT(height == 0); |
| 446 | translation->BeginSetterStubFrame(closure_id); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 447 | break; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 448 | case ARGUMENTS_ADAPTOR: |
| 449 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 450 | break; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 451 | } |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 452 | |
| 453 | // Inlined frames which push their arguments cause the index to be |
| 454 | // bumped and another stack area to be used for materialization. |
| 455 | if (environment->entry() != NULL && |
| 456 | environment->entry()->arguments_pushed()) { |
| 457 | *arguments_index = *arguments_index < 0 |
| 458 | ? GetStackSlotCount() |
| 459 | : *arguments_index + *arguments_count; |
| 460 | *arguments_count = environment->entry()->arguments_count() + 1; |
| 461 | } |
| 462 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 463 | for (int i = 0; i < translation_size; ++i) { |
| 464 | LOperand* value = environment->values()->at(i); |
| 465 | // spilled_registers_ and spilled_double_registers_ are either |
| 466 | // both NULL or both set. |
| 467 | if (environment->spilled_registers() != NULL && value != NULL) { |
| 468 | if (value->IsRegister() && |
| 469 | environment->spilled_registers()[value->index()] != NULL) { |
| 470 | translation->MarkDuplicate(); |
| 471 | AddToTranslation(translation, |
| 472 | environment->spilled_registers()[value->index()], |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 473 | environment->HasTaggedValueAt(i), |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 474 | environment->HasUint32ValueAt(i), |
| 475 | *arguments_index, |
| 476 | *arguments_count); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 477 | } else if ( |
| 478 | value->IsDoubleRegister() && |
| 479 | environment->spilled_double_registers()[value->index()] != NULL) { |
| 480 | translation->MarkDuplicate(); |
| 481 | AddToTranslation( |
| 482 | translation, |
| 483 | environment->spilled_double_registers()[value->index()], |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 484 | false, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 485 | false, |
| 486 | *arguments_index, |
| 487 | *arguments_count); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 488 | } |
| 489 | } |
| 490 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 491 | AddToTranslation(translation, |
| 492 | value, |
| 493 | environment->HasTaggedValueAt(i), |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 494 | environment->HasUint32ValueAt(i), |
| 495 | *arguments_index, |
| 496 | *arguments_count); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 497 | } |
| 498 | } |
| 499 | |
| 500 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 501 | void LCodeGen::AddToTranslation(Translation* translation, |
| 502 | LOperand* op, |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 503 | bool is_tagged, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 504 | bool is_uint32, |
| 505 | int arguments_index, |
| 506 | int arguments_count) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 507 | if (op == NULL) { |
| 508 | // TODO(twuerthinger): Introduce marker operands to indicate that this value |
| 509 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 510 | // this is only used for the arguments object. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 511 | translation->StoreArgumentsObject(arguments_index, arguments_count); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 512 | } else if (op->IsStackSlot()) { |
| 513 | if (is_tagged) { |
| 514 | translation->StoreStackSlot(op->index()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 515 | } else if (is_uint32) { |
| 516 | translation->StoreUint32StackSlot(op->index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 517 | } else { |
| 518 | translation->StoreInt32StackSlot(op->index()); |
| 519 | } |
| 520 | } else if (op->IsDoubleStackSlot()) { |
| 521 | translation->StoreDoubleStackSlot(op->index()); |
| 522 | } else if (op->IsArgument()) { |
| 523 | ASSERT(is_tagged); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 524 | int src_index = GetStackSlotCount() + op->index(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 525 | translation->StoreStackSlot(src_index); |
| 526 | } else if (op->IsRegister()) { |
| 527 | Register reg = ToRegister(op); |
| 528 | if (is_tagged) { |
| 529 | translation->StoreRegister(reg); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 530 | } else if (is_uint32) { |
| 531 | translation->StoreUint32Register(reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 532 | } else { |
| 533 | translation->StoreInt32Register(reg); |
| 534 | } |
| 535 | } else if (op->IsDoubleRegister()) { |
| 536 | XMMRegister reg = ToDoubleRegister(op); |
| 537 | translation->StoreDoubleRegister(reg); |
| 538 | } else if (op->IsConstantOperand()) { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 539 | HConstant* constant = chunk()->LookupConstant(LConstantOperand::cast(op)); |
| 540 | int src_index = DefineDeoptimizationLiteral(constant->handle()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 541 | translation->StoreLiteral(src_index); |
| 542 | } else { |
| 543 | UNREACHABLE(); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 548 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 549 | RelocInfo::Mode mode, |
| 550 | LInstruction* instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 551 | SafepointMode safepoint_mode) { |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 552 | ASSERT(instr != NULL); |
| 553 | LPointerMap* pointers = instr->pointer_map(); |
| 554 | RecordPosition(pointers->position()); |
| 555 | __ call(code, mode); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 556 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 557 | |
| 558 | // Signal that we don't inline smi code before these stubs in the |
| 559 | // optimizing code generator. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 560 | if (code->kind() == Code::BINARY_OP_IC || |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 561 | code->kind() == Code::COMPARE_IC) { |
| 562 | __ nop(); |
| 563 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 567 | void LCodeGen::CallCode(Handle<Code> code, |
| 568 | RelocInfo::Mode mode, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 569 | LInstruction* instr) { |
| 570 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 571 | } |
| 572 | |
| 573 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 574 | void LCodeGen::CallRuntime(const Runtime::Function* fun, |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 575 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 576 | LInstruction* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 577 | ASSERT(instr != NULL); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 578 | ASSERT(instr->HasPointerMap()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 579 | LPointerMap* pointers = instr->pointer_map(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 580 | RecordPosition(pointers->position()); |
| 581 | |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 582 | __ CallRuntime(fun, argc); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 583 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 584 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 588 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 589 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 590 | LInstruction* instr, |
| 591 | LOperand* context) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 592 | if (context->IsRegister()) { |
| 593 | if (!ToRegister(context).is(esi)) { |
| 594 | __ mov(esi, ToRegister(context)); |
| 595 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 596 | } else if (context->IsStackSlot()) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 597 | __ mov(esi, ToOperand(context)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 598 | } else if (context->IsConstantOperand()) { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 599 | HConstant* constant = |
| 600 | chunk_->LookupConstant(LConstantOperand::cast(context)); |
| 601 | __ LoadHeapObject(esi, Handle<Context>::cast(constant->handle())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 602 | } else { |
| 603 | UNREACHABLE(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 604 | } |
| 605 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 606 | __ CallRuntimeSaveDoubles(id); |
| 607 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 608 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 612 | void LCodeGen::RegisterEnvironmentForDeoptimization( |
| 613 | LEnvironment* environment, Safepoint::DeoptMode mode) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 614 | if (!environment->HasBeenRegistered()) { |
| 615 | // Physical stack frame layout: |
| 616 | // -x ............. -4 0 ..................................... y |
| 617 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 618 | |
| 619 | // Layout of the environment: |
| 620 | // 0 ..................................................... size-1 |
| 621 | // [parameters] [locals] [expression stack including arguments] |
| 622 | |
| 623 | // Layout of the translation: |
| 624 | // 0 ........................................................ size - 1 + 4 |
| 625 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 626 | // |>------------ translation_size ------------<| |
| 627 | |
| 628 | int frame_count = 0; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 629 | int jsframe_count = 0; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 630 | int args_index = 0; |
| 631 | int args_count = 0; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 632 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 633 | ++frame_count; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 634 | if (e->frame_type() == JS_FUNCTION) { |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 635 | ++jsframe_count; |
| 636 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 637 | } |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 638 | Translation translation(&translations_, frame_count, jsframe_count, zone()); |
| 639 | WriteTranslation(environment, &translation, &args_index, &args_count); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 640 | int deoptimization_index = deoptimizations_.length(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 641 | int pc_offset = masm()->pc_offset(); |
| 642 | environment->Register(deoptimization_index, |
| 643 | translation.index(), |
| 644 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 645 | deoptimizations_.Add(environment, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 646 | } |
| 647 | } |
| 648 | |
| 649 | |
| 650 | void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 651 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 652 | ASSERT(environment->HasBeenRegistered()); |
| 653 | int id = environment->deoptimization_index(); |
| 654 | Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 655 | if (entry == NULL) { |
| 656 | Abort("bailout was not prepared"); |
| 657 | return; |
| 658 | } |
| 659 | |
| 660 | if (FLAG_deopt_every_n_times != 0) { |
| 661 | Handle<SharedFunctionInfo> shared(info_->shared_info()); |
| 662 | Label no_deopt; |
| 663 | __ pushfd(); |
| 664 | __ push(eax); |
| 665 | __ push(ebx); |
| 666 | __ mov(ebx, shared); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 667 | __ mov(eax, |
| 668 | FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 669 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 670 | __ j(not_zero, &no_deopt, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 671 | if (FLAG_trap_on_deopt) __ int3(); |
| 672 | __ mov(eax, Immediate(Smi::FromInt(FLAG_deopt_every_n_times))); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 673 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset), |
| 674 | eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 675 | __ pop(ebx); |
| 676 | __ pop(eax); |
| 677 | __ popfd(); |
| 678 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 679 | |
| 680 | __ bind(&no_deopt); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 681 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset), |
| 682 | eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 683 | __ pop(ebx); |
| 684 | __ pop(eax); |
| 685 | __ popfd(); |
| 686 | } |
| 687 | |
| 688 | if (cc == no_condition) { |
| 689 | if (FLAG_trap_on_deopt) __ int3(); |
| 690 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 691 | } else { |
| 692 | if (FLAG_trap_on_deopt) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 693 | Label done; |
| 694 | __ j(NegateCondition(cc), &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 695 | __ int3(); |
| 696 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 697 | __ bind(&done); |
| 698 | } else { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 699 | __ j(cc, entry, RelocInfo::RUNTIME_ENTRY); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 700 | } |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | |
| 705 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 706 | int length = deoptimizations_.length(); |
| 707 | if (length == 0) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 708 | Handle<DeoptimizationInputData> data = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 709 | factory()->NewDeoptimizationInputData(length, TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 710 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 711 | Handle<ByteArray> translations = translations_.CreateByteArray(); |
| 712 | data->SetTranslationByteArray(*translations); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 713 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 714 | |
| 715 | Handle<FixedArray> literals = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 716 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 717 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 718 | literals->set(i, *deoptimization_literals_[i]); |
| 719 | } |
| 720 | data->SetLiteralArray(*literals); |
| 721 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 722 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id().ToInt())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 723 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 724 | |
| 725 | // Populate the deoptimization entries. |
| 726 | for (int i = 0; i < length; i++) { |
| 727 | LEnvironment* env = deoptimizations_[i]; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 728 | data->SetAstId(i, env->ast_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 729 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 730 | data->SetArgumentsStackHeight(i, |
| 731 | Smi::FromInt(env->arguments_stack_height())); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 732 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 733 | } |
| 734 | code->set_deoptimization_data(*data); |
| 735 | } |
| 736 | |
| 737 | |
| 738 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 739 | int result = deoptimization_literals_.length(); |
| 740 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 741 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 742 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 743 | deoptimization_literals_.Add(literal, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 744 | return result; |
| 745 | } |
| 746 | |
| 747 | |
| 748 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 749 | ASSERT(deoptimization_literals_.length() == 0); |
| 750 | |
| 751 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 752 | chunk()->inlined_closures(); |
| 753 | |
| 754 | for (int i = 0, length = inlined_closures->length(); |
| 755 | i < length; |
| 756 | i++) { |
| 757 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 758 | } |
| 759 | |
| 760 | inlined_function_count_ = deoptimization_literals_.length(); |
| 761 | } |
| 762 | |
| 763 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 764 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 765 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 766 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 767 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 768 | } else { |
| 769 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 770 | RecordSafepointWithRegisters( |
| 771 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 776 | void LCodeGen::RecordSafepoint( |
| 777 | LPointerMap* pointers, |
| 778 | Safepoint::Kind kind, |
| 779 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 780 | Safepoint::DeoptMode deopt_mode) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 781 | ASSERT(kind == expected_safepoint_kind_); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 782 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 783 | Safepoint safepoint = |
| 784 | safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 785 | for (int i = 0; i < operands->length(); i++) { |
| 786 | LOperand* pointer = operands->at(i); |
| 787 | if (pointer->IsStackSlot()) { |
rossberg@chromium.org | 400388e | 2012-06-06 09:29:22 +0000 | [diff] [blame] | 788 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 789 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 790 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 791 | } |
| 792 | } |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | |
| 796 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 797 | Safepoint::DeoptMode mode) { |
| 798 | RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 802 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 803 | LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 804 | RecordSafepoint(&empty_pointers, mode); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 805 | } |
| 806 | |
| 807 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 808 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 809 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 810 | Safepoint::DeoptMode mode) { |
| 811 | RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | |
| 815 | void LCodeGen::RecordPosition(int position) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 816 | if (position == RelocInfo::kNoPosition) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 817 | masm()->positions_recorder()->RecordPosition(position); |
| 818 | } |
| 819 | |
| 820 | |
| 821 | void LCodeGen::DoLabel(LLabel* label) { |
| 822 | if (label->is_loop_header()) { |
| 823 | Comment(";;; B%d - LOOP entry", label->block_id()); |
| 824 | } else { |
| 825 | Comment(";;; B%d", label->block_id()); |
| 826 | } |
| 827 | __ bind(label->label()); |
| 828 | current_block_ = label->block_id(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 829 | DoGap(label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | |
| 833 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 834 | resolver_.Resolve(move); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 835 | } |
| 836 | |
| 837 | |
| 838 | void LCodeGen::DoGap(LGap* gap) { |
| 839 | for (int i = LGap::FIRST_INNER_POSITION; |
| 840 | i <= LGap::LAST_INNER_POSITION; |
| 841 | i++) { |
| 842 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 843 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 844 | if (move != NULL) DoParallelMove(move); |
| 845 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 849 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 850 | DoGap(instr); |
| 851 | } |
| 852 | |
| 853 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 854 | void LCodeGen::DoParameter(LParameter* instr) { |
| 855 | // Nothing to do. |
| 856 | } |
| 857 | |
| 858 | |
| 859 | void LCodeGen::DoCallStub(LCallStub* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 860 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 861 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 862 | switch (instr->hydrogen()->major_key()) { |
| 863 | case CodeStub::RegExpConstructResult: { |
| 864 | RegExpConstructResultStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 865 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 866 | break; |
| 867 | } |
| 868 | case CodeStub::RegExpExec: { |
| 869 | RegExpExecStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 870 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 871 | break; |
| 872 | } |
| 873 | case CodeStub::SubString: { |
| 874 | SubStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 875 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 876 | break; |
| 877 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 878 | case CodeStub::NumberToString: { |
| 879 | NumberToStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 880 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 881 | break; |
| 882 | } |
| 883 | case CodeStub::StringAdd: { |
| 884 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 885 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 886 | break; |
| 887 | } |
| 888 | case CodeStub::StringCompare: { |
| 889 | StringCompareStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 890 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 891 | break; |
| 892 | } |
| 893 | case CodeStub::TranscendentalCache: { |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 894 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 895 | TranscendentalCacheStub::TAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 896 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 897 | break; |
| 898 | } |
| 899 | default: |
| 900 | UNREACHABLE(); |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | |
| 905 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
| 906 | // Nothing to do. |
| 907 | } |
| 908 | |
| 909 | |
| 910 | void LCodeGen::DoModI(LModI* instr) { |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 911 | if (instr->hydrogen()->HasPowerOf2Divisor()) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 912 | Register dividend = ToRegister(instr->left()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 913 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 914 | int32_t divisor = |
| 915 | HConstant::cast(instr->hydrogen()->right())->Integer32Value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 916 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 917 | if (divisor < 0) divisor = -divisor; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 918 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 919 | Label positive_dividend, done; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 920 | __ test(dividend, Operand(dividend)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 921 | __ j(not_sign, &positive_dividend, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 922 | __ neg(dividend); |
| 923 | __ and_(dividend, divisor - 1); |
| 924 | __ neg(dividend); |
| 925 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 926 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 927 | DeoptimizeIf(no_condition, instr->environment()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 928 | } else { |
| 929 | __ jmp(&done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 930 | } |
| 931 | __ bind(&positive_dividend); |
| 932 | __ and_(dividend, divisor - 1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 933 | __ bind(&done); |
| 934 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 935 | Label done, remainder_eq_dividend, slow, do_subtraction, both_positive; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 936 | Register left_reg = ToRegister(instr->left()); |
| 937 | Register right_reg = ToRegister(instr->right()); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 938 | Register result_reg = ToRegister(instr->result()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 939 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 940 | ASSERT(left_reg.is(eax)); |
| 941 | ASSERT(result_reg.is(edx)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 942 | ASSERT(!right_reg.is(eax)); |
| 943 | ASSERT(!right_reg.is(edx)); |
| 944 | |
| 945 | // Check for x % 0. |
| 946 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 947 | __ test(right_reg, Operand(right_reg)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 948 | DeoptimizeIf(zero, instr->environment()); |
| 949 | } |
| 950 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 951 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 952 | __ j(zero, &remainder_eq_dividend, Label::kNear); |
| 953 | __ j(sign, &slow, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 954 | |
| 955 | __ test(right_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 956 | __ j(not_sign, &both_positive, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 957 | // The sign of the divisor doesn't matter. |
| 958 | __ neg(right_reg); |
| 959 | |
| 960 | __ bind(&both_positive); |
| 961 | // If the dividend is smaller than the nonnegative |
| 962 | // divisor, the dividend is the result. |
| 963 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 964 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 965 | |
| 966 | // Check if the divisor is a PowerOfTwo integer. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 967 | Register scratch = ToRegister(instr->temp()); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 968 | __ mov(scratch, right_reg); |
| 969 | __ sub(Operand(scratch), Immediate(1)); |
| 970 | __ test(scratch, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 971 | __ j(not_zero, &do_subtraction, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 972 | __ and_(left_reg, Operand(scratch)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 973 | __ jmp(&remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 974 | |
| 975 | __ bind(&do_subtraction); |
| 976 | const int kUnfolds = 3; |
| 977 | // Try a few subtractions of the dividend. |
| 978 | __ mov(scratch, left_reg); |
| 979 | for (int i = 0; i < kUnfolds; i++) { |
| 980 | // Reduce the dividend by the divisor. |
| 981 | __ sub(left_reg, Operand(right_reg)); |
| 982 | // Check if the dividend is less than the divisor. |
| 983 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 984 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 985 | } |
| 986 | __ mov(left_reg, scratch); |
| 987 | |
| 988 | // Slow case, using idiv instruction. |
| 989 | __ bind(&slow); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 990 | // Sign extend to edx. |
| 991 | __ cdq(); |
| 992 | |
| 993 | // Check for (0 % -x) that will produce negative zero. |
| 994 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 995 | Label positive_left; |
| 996 | Label done; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 997 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 998 | __ j(not_sign, &positive_left, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 999 | __ idiv(right_reg); |
| 1000 | |
| 1001 | // Test the remainder for 0, because then the result would be -0. |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1002 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1003 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1004 | |
| 1005 | DeoptimizeIf(no_condition, instr->environment()); |
| 1006 | __ bind(&positive_left); |
| 1007 | __ idiv(right_reg); |
| 1008 | __ bind(&done); |
| 1009 | } else { |
| 1010 | __ idiv(right_reg); |
| 1011 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1012 | __ jmp(&done, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1013 | |
| 1014 | __ bind(&remainder_eq_dividend); |
| 1015 | __ mov(result_reg, left_reg); |
| 1016 | |
| 1017 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1018 | } |
| 1019 | } |
| 1020 | |
| 1021 | |
| 1022 | void LCodeGen::DoDivI(LDivI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1023 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1024 | ASSERT(ToRegister(instr->result()).is(eax)); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1025 | ASSERT(ToRegister(instr->left()).is(eax)); |
| 1026 | ASSERT(!ToRegister(instr->right()).is(eax)); |
| 1027 | ASSERT(!ToRegister(instr->right()).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1028 | |
| 1029 | Register left_reg = eax; |
| 1030 | |
| 1031 | // Check for x / 0. |
| 1032 | Register right_reg = ToRegister(right); |
| 1033 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1034 | __ test(right_reg, ToOperand(right)); |
| 1035 | DeoptimizeIf(zero, instr->environment()); |
| 1036 | } |
| 1037 | |
| 1038 | // Check for (0 / -x) that will produce negative zero. |
| 1039 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1040 | Label left_not_zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1041 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1042 | __ j(not_zero, &left_not_zero, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1043 | __ test(right_reg, ToOperand(right)); |
| 1044 | DeoptimizeIf(sign, instr->environment()); |
| 1045 | __ bind(&left_not_zero); |
| 1046 | } |
| 1047 | |
| 1048 | // Check for (-kMinInt / -1). |
| 1049 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1050 | Label left_not_min_int; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1051 | __ cmp(left_reg, kMinInt); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1052 | __ j(not_zero, &left_not_min_int, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1053 | __ cmp(right_reg, -1); |
| 1054 | DeoptimizeIf(zero, instr->environment()); |
| 1055 | __ bind(&left_not_min_int); |
| 1056 | } |
| 1057 | |
| 1058 | // Sign extend to edx. |
| 1059 | __ cdq(); |
| 1060 | __ idiv(right_reg); |
| 1061 | |
| 1062 | // Deoptimize if remainder is not 0. |
| 1063 | __ test(edx, Operand(edx)); |
| 1064 | DeoptimizeIf(not_zero, instr->environment()); |
| 1065 | } |
| 1066 | |
| 1067 | |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1068 | void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1069 | ASSERT(instr->right()->IsConstantOperand()); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1070 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1071 | Register dividend = ToRegister(instr->left()); |
| 1072 | int32_t divisor = ToInteger32(LConstantOperand::cast(instr->right())); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1073 | Register result = ToRegister(instr->result()); |
| 1074 | |
| 1075 | switch (divisor) { |
| 1076 | case 0: |
| 1077 | DeoptimizeIf(no_condition, instr->environment()); |
| 1078 | return; |
| 1079 | |
| 1080 | case 1: |
| 1081 | __ Move(result, dividend); |
| 1082 | return; |
| 1083 | |
| 1084 | case -1: |
| 1085 | __ Move(result, dividend); |
| 1086 | __ neg(result); |
| 1087 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1088 | DeoptimizeIf(zero, instr->environment()); |
| 1089 | } |
| 1090 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1091 | DeoptimizeIf(overflow, instr->environment()); |
| 1092 | } |
| 1093 | return; |
| 1094 | } |
| 1095 | |
| 1096 | uint32_t divisor_abs = abs(divisor); |
| 1097 | if (IsPowerOf2(divisor_abs)) { |
| 1098 | int32_t power = WhichPowerOf2(divisor_abs); |
| 1099 | if (divisor < 0) { |
| 1100 | // Input[dividend] is clobbered. |
| 1101 | // The sequence is tedious because neg(dividend) might overflow. |
| 1102 | __ mov(result, dividend); |
| 1103 | __ sar(dividend, 31); |
| 1104 | __ neg(result); |
| 1105 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1106 | DeoptimizeIf(zero, instr->environment()); |
| 1107 | } |
| 1108 | __ shl(dividend, 32 - power); |
| 1109 | __ sar(result, power); |
| 1110 | __ not_(dividend); |
| 1111 | // Clear result.sign if dividend.sign is set. |
| 1112 | __ and_(result, dividend); |
| 1113 | } else { |
| 1114 | __ Move(result, dividend); |
| 1115 | __ sar(result, power); |
| 1116 | } |
| 1117 | } else { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1118 | ASSERT(ToRegister(instr->left()).is(eax)); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1119 | ASSERT(ToRegister(instr->result()).is(edx)); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1120 | Register scratch = ToRegister(instr->temp()); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1121 | |
| 1122 | // Find b which: 2^b < divisor_abs < 2^(b+1). |
| 1123 | unsigned b = 31 - CompilerIntrinsics::CountLeadingZeros(divisor_abs); |
| 1124 | unsigned shift = 32 + b; // Precision +1bit (effectively). |
| 1125 | double multiplier_f = |
| 1126 | static_cast<double>(static_cast<uint64_t>(1) << shift) / divisor_abs; |
| 1127 | int64_t multiplier; |
| 1128 | if (multiplier_f - floor(multiplier_f) < 0.5) { |
| 1129 | multiplier = static_cast<int64_t>(floor(multiplier_f)); |
| 1130 | } else { |
| 1131 | multiplier = static_cast<int64_t>(floor(multiplier_f)) + 1; |
| 1132 | } |
| 1133 | // The multiplier is a uint32. |
| 1134 | ASSERT(multiplier > 0 && |
| 1135 | multiplier < (static_cast<int64_t>(1) << 32)); |
| 1136 | __ mov(scratch, dividend); |
| 1137 | if (divisor < 0 && |
| 1138 | instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1139 | __ test(dividend, dividend); |
| 1140 | DeoptimizeIf(zero, instr->environment()); |
| 1141 | } |
| 1142 | __ mov(edx, static_cast<int32_t>(multiplier)); |
| 1143 | __ imul(edx); |
| 1144 | if (static_cast<int32_t>(multiplier) < 0) { |
| 1145 | __ add(edx, scratch); |
| 1146 | } |
| 1147 | Register reg_lo = eax; |
| 1148 | Register reg_byte_scratch = scratch; |
| 1149 | if (!reg_byte_scratch.is_byte_register()) { |
| 1150 | __ xchg(reg_lo, reg_byte_scratch); |
| 1151 | reg_lo = scratch; |
| 1152 | reg_byte_scratch = eax; |
| 1153 | } |
| 1154 | if (divisor < 0) { |
| 1155 | __ xor_(reg_byte_scratch, reg_byte_scratch); |
| 1156 | __ cmp(reg_lo, 0x40000000); |
| 1157 | __ setcc(above, reg_byte_scratch); |
| 1158 | __ neg(edx); |
| 1159 | __ sub(edx, reg_byte_scratch); |
| 1160 | } else { |
| 1161 | __ xor_(reg_byte_scratch, reg_byte_scratch); |
| 1162 | __ cmp(reg_lo, 0xC0000000); |
| 1163 | __ setcc(above_equal, reg_byte_scratch); |
| 1164 | __ add(edx, reg_byte_scratch); |
| 1165 | } |
| 1166 | __ sar(edx, shift - 32); |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1171 | void LCodeGen::DoMulI(LMulI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1172 | Register left = ToRegister(instr->left()); |
| 1173 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1174 | |
| 1175 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1176 | __ mov(ToRegister(instr->temp()), left); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | if (right->IsConstantOperand()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1180 | // Try strength reductions on the multiplication. |
| 1181 | // All replacement instructions are at most as long as the imul |
| 1182 | // and have better latency. |
| 1183 | int constant = ToInteger32(LConstantOperand::cast(right)); |
| 1184 | if (constant == -1) { |
| 1185 | __ neg(left); |
| 1186 | } else if (constant == 0) { |
| 1187 | __ xor_(left, Operand(left)); |
| 1188 | } else if (constant == 2) { |
| 1189 | __ add(left, Operand(left)); |
| 1190 | } else if (!instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1191 | // If we know that the multiplication can't overflow, it's safe to |
| 1192 | // use instructions that don't set the overflow flag for the |
| 1193 | // multiplication. |
| 1194 | switch (constant) { |
| 1195 | case 1: |
| 1196 | // Do nothing. |
| 1197 | break; |
| 1198 | case 3: |
| 1199 | __ lea(left, Operand(left, left, times_2, 0)); |
| 1200 | break; |
| 1201 | case 4: |
| 1202 | __ shl(left, 2); |
| 1203 | break; |
| 1204 | case 5: |
| 1205 | __ lea(left, Operand(left, left, times_4, 0)); |
| 1206 | break; |
| 1207 | case 8: |
| 1208 | __ shl(left, 3); |
| 1209 | break; |
| 1210 | case 9: |
| 1211 | __ lea(left, Operand(left, left, times_8, 0)); |
| 1212 | break; |
| 1213 | case 16: |
| 1214 | __ shl(left, 4); |
| 1215 | break; |
| 1216 | default: |
| 1217 | __ imul(left, left, constant); |
| 1218 | break; |
| 1219 | } |
| 1220 | } else { |
| 1221 | __ imul(left, left, constant); |
| 1222 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1223 | } else { |
| 1224 | __ imul(left, ToOperand(right)); |
| 1225 | } |
| 1226 | |
| 1227 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1228 | DeoptimizeIf(overflow, instr->environment()); |
| 1229 | } |
| 1230 | |
| 1231 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1232 | // Bail out if the result is supposed to be negative zero. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1233 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1234 | __ test(left, Operand(left)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1235 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1236 | if (right->IsConstantOperand()) { |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1237 | if (ToInteger32(LConstantOperand::cast(right)) < 0) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1238 | DeoptimizeIf(no_condition, instr->environment()); |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 1239 | } else if (ToInteger32(LConstantOperand::cast(right)) == 0) { |
| 1240 | __ cmp(ToRegister(instr->temp()), Immediate(0)); |
| 1241 | DeoptimizeIf(less, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1242 | } |
| 1243 | } else { |
| 1244 | // Test the non-zero operand for negative sign. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1245 | __ or_(ToRegister(instr->temp()), ToOperand(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1246 | DeoptimizeIf(sign, instr->environment()); |
| 1247 | } |
| 1248 | __ bind(&done); |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | |
| 1253 | void LCodeGen::DoBitI(LBitI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1254 | LOperand* left = instr->left(); |
| 1255 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1256 | ASSERT(left->Equals(instr->result())); |
| 1257 | ASSERT(left->IsRegister()); |
| 1258 | |
| 1259 | if (right->IsConstantOperand()) { |
| 1260 | int right_operand = ToInteger32(LConstantOperand::cast(right)); |
| 1261 | switch (instr->op()) { |
| 1262 | case Token::BIT_AND: |
| 1263 | __ and_(ToRegister(left), right_operand); |
| 1264 | break; |
| 1265 | case Token::BIT_OR: |
| 1266 | __ or_(ToRegister(left), right_operand); |
| 1267 | break; |
| 1268 | case Token::BIT_XOR: |
| 1269 | __ xor_(ToRegister(left), right_operand); |
| 1270 | break; |
| 1271 | default: |
| 1272 | UNREACHABLE(); |
| 1273 | break; |
| 1274 | } |
| 1275 | } else { |
| 1276 | switch (instr->op()) { |
| 1277 | case Token::BIT_AND: |
| 1278 | __ and_(ToRegister(left), ToOperand(right)); |
| 1279 | break; |
| 1280 | case Token::BIT_OR: |
| 1281 | __ or_(ToRegister(left), ToOperand(right)); |
| 1282 | break; |
| 1283 | case Token::BIT_XOR: |
| 1284 | __ xor_(ToRegister(left), ToOperand(right)); |
| 1285 | break; |
| 1286 | default: |
| 1287 | UNREACHABLE(); |
| 1288 | break; |
| 1289 | } |
| 1290 | } |
| 1291 | } |
| 1292 | |
| 1293 | |
| 1294 | void LCodeGen::DoShiftI(LShiftI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1295 | LOperand* left = instr->left(); |
| 1296 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1297 | ASSERT(left->Equals(instr->result())); |
| 1298 | ASSERT(left->IsRegister()); |
| 1299 | if (right->IsRegister()) { |
| 1300 | ASSERT(ToRegister(right).is(ecx)); |
| 1301 | |
| 1302 | switch (instr->op()) { |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 1303 | case Token::ROR: |
| 1304 | __ ror_cl(ToRegister(left)); |
| 1305 | if (instr->can_deopt()) { |
| 1306 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1307 | DeoptimizeIf(not_zero, instr->environment()); |
| 1308 | } |
| 1309 | break; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1310 | case Token::SAR: |
| 1311 | __ sar_cl(ToRegister(left)); |
| 1312 | break; |
| 1313 | case Token::SHR: |
| 1314 | __ shr_cl(ToRegister(left)); |
| 1315 | if (instr->can_deopt()) { |
| 1316 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1317 | DeoptimizeIf(not_zero, instr->environment()); |
| 1318 | } |
| 1319 | break; |
| 1320 | case Token::SHL: |
| 1321 | __ shl_cl(ToRegister(left)); |
| 1322 | break; |
| 1323 | default: |
| 1324 | UNREACHABLE(); |
| 1325 | break; |
| 1326 | } |
| 1327 | } else { |
| 1328 | int value = ToInteger32(LConstantOperand::cast(right)); |
| 1329 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1330 | switch (instr->op()) { |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 1331 | case Token::ROR: |
| 1332 | if (shift_count == 0 && instr->can_deopt()) { |
| 1333 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1334 | DeoptimizeIf(not_zero, instr->environment()); |
| 1335 | } else { |
| 1336 | __ ror(ToRegister(left), shift_count); |
| 1337 | } |
| 1338 | break; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1339 | case Token::SAR: |
| 1340 | if (shift_count != 0) { |
| 1341 | __ sar(ToRegister(left), shift_count); |
| 1342 | } |
| 1343 | break; |
| 1344 | case Token::SHR: |
| 1345 | if (shift_count == 0 && instr->can_deopt()) { |
| 1346 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1347 | DeoptimizeIf(not_zero, instr->environment()); |
| 1348 | } else { |
| 1349 | __ shr(ToRegister(left), shift_count); |
| 1350 | } |
| 1351 | break; |
| 1352 | case Token::SHL: |
| 1353 | if (shift_count != 0) { |
| 1354 | __ shl(ToRegister(left), shift_count); |
| 1355 | } |
| 1356 | break; |
| 1357 | default: |
| 1358 | UNREACHABLE(); |
| 1359 | break; |
| 1360 | } |
| 1361 | } |
| 1362 | } |
| 1363 | |
| 1364 | |
| 1365 | void LCodeGen::DoSubI(LSubI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1366 | LOperand* left = instr->left(); |
| 1367 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1368 | ASSERT(left->Equals(instr->result())); |
| 1369 | |
| 1370 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1371 | __ sub(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1372 | } else { |
| 1373 | __ sub(ToRegister(left), ToOperand(right)); |
| 1374 | } |
| 1375 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1376 | DeoptimizeIf(overflow, instr->environment()); |
| 1377 | } |
| 1378 | } |
| 1379 | |
| 1380 | |
| 1381 | void LCodeGen::DoConstantI(LConstantI* instr) { |
| 1382 | ASSERT(instr->result()->IsRegister()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1383 | __ Set(ToRegister(instr->result()), Immediate(instr->value())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1384 | } |
| 1385 | |
| 1386 | |
| 1387 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1388 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1389 | XMMRegister res = ToDoubleRegister(instr->result()); |
| 1390 | double v = instr->value(); |
| 1391 | // Use xor to produce +0.0 in a fast and compact way, but avoid to |
| 1392 | // do so if the constant is -0.0. |
| 1393 | if (BitCast<uint64_t, double>(v) == 0) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1394 | __ xorps(res, res); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1395 | } else { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1396 | Register temp = ToRegister(instr->temp()); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1397 | uint64_t int_val = BitCast<uint64_t, double>(v); |
| 1398 | int32_t lower = static_cast<int32_t>(int_val); |
| 1399 | int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1400 | if (CpuFeatures::IsSupported(SSE4_1)) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1401 | CpuFeatures::Scope scope(SSE4_1); |
| 1402 | if (lower != 0) { |
| 1403 | __ Set(temp, Immediate(lower)); |
| 1404 | __ movd(res, Operand(temp)); |
| 1405 | __ Set(temp, Immediate(upper)); |
| 1406 | __ pinsrd(res, Operand(temp), 1); |
| 1407 | } else { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1408 | __ xorps(res, res); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1409 | __ Set(temp, Immediate(upper)); |
| 1410 | __ pinsrd(res, Operand(temp), 1); |
| 1411 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1412 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1413 | __ Set(temp, Immediate(upper)); |
| 1414 | __ movd(res, Operand(temp)); |
| 1415 | __ psllq(res, 32); |
| 1416 | if (lower != 0) { |
| 1417 | __ Set(temp, Immediate(lower)); |
| 1418 | __ movd(xmm0, Operand(temp)); |
| 1419 | __ por(res, xmm0); |
| 1420 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1421 | } |
| 1422 | } |
| 1423 | } |
| 1424 | |
| 1425 | |
| 1426 | void LCodeGen::DoConstantT(LConstantT* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1427 | Register reg = ToRegister(instr->result()); |
| 1428 | Handle<Object> handle = instr->value(); |
| 1429 | if (handle->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1430 | __ LoadHeapObject(reg, Handle<HeapObject>::cast(handle)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1431 | } else { |
| 1432 | __ Set(reg, Immediate(handle)); |
| 1433 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1434 | } |
| 1435 | |
| 1436 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1437 | void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1438 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1439 | Register array = ToRegister(instr->value()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1440 | __ mov(result, FieldOperand(array, JSArray::kLengthOffset)); |
| 1441 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1442 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1443 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1444 | void LCodeGen::DoFixedArrayBaseLength( |
| 1445 | LFixedArrayBaseLength* instr) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1446 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1447 | Register array = ToRegister(instr->value()); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1448 | __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1449 | } |
| 1450 | |
| 1451 | |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 1452 | void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) { |
| 1453 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1454 | Register map = ToRegister(instr->value()); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 1455 | __ EnumLength(result, map); |
| 1456 | } |
| 1457 | |
| 1458 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1459 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1460 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1461 | Register input = ToRegister(instr->value()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1462 | |
| 1463 | // Load map into |result|. |
| 1464 | __ mov(result, FieldOperand(input, HeapObject::kMapOffset)); |
| 1465 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1466 | // but the following masking takes care of that anyway. |
| 1467 | __ mov(result, FieldOperand(result, Map::kBitField2Offset)); |
| 1468 | // Retrieve elements_kind from bit field 2. |
| 1469 | __ and_(result, Map::kElementsKindMask); |
| 1470 | __ shr(result, Map::kElementsKindShift); |
| 1471 | } |
| 1472 | |
| 1473 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1474 | void LCodeGen::DoValueOf(LValueOf* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1475 | Register input = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1476 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1477 | Register map = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1478 | ASSERT(input.is(result)); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1479 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1480 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1481 | // If the object is a smi return the object. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1482 | __ JumpIfSmi(input, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1483 | |
| 1484 | // If the object is not a value type, return the object. |
| 1485 | __ CmpObjectType(input, JS_VALUE_TYPE, map); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1486 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1487 | __ mov(result, FieldOperand(input, JSValue::kValueOffset)); |
| 1488 | |
| 1489 | __ bind(&done); |
| 1490 | } |
| 1491 | |
| 1492 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1493 | void LCodeGen::DoDateField(LDateField* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1494 | Register object = ToRegister(instr->date()); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1495 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1496 | Register scratch = ToRegister(instr->temp()); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1497 | Smi* index = instr->index(); |
| 1498 | Label runtime, done; |
| 1499 | ASSERT(object.is(result)); |
| 1500 | ASSERT(object.is(eax)); |
| 1501 | |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1502 | __ test(object, Immediate(kSmiTagMask)); |
| 1503 | DeoptimizeIf(zero, instr->environment()); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1504 | __ CmpObjectType(object, JS_DATE_TYPE, scratch); |
mstarzinger@chromium.org | de88679 | 2012-09-11 13:22:37 +0000 | [diff] [blame] | 1505 | DeoptimizeIf(not_equal, instr->environment()); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1506 | |
| 1507 | if (index->value() == 0) { |
| 1508 | __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
| 1509 | } else { |
| 1510 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1511 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1512 | __ mov(scratch, Operand::StaticVariable(stamp)); |
| 1513 | __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
| 1514 | __ j(not_equal, &runtime, Label::kNear); |
| 1515 | __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
| 1516 | kPointerSize * index->value())); |
| 1517 | __ jmp(&done); |
| 1518 | } |
| 1519 | __ bind(&runtime); |
| 1520 | __ PrepareCallCFunction(2, scratch); |
| 1521 | __ mov(Operand(esp, 0), object); |
| 1522 | __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
| 1523 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1524 | __ bind(&done); |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1529 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1530 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1531 | ASSERT(input->Equals(instr->result())); |
| 1532 | __ not_(ToRegister(input)); |
| 1533 | } |
| 1534 | |
| 1535 | |
| 1536 | void LCodeGen::DoThrow(LThrow* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1537 | __ push(ToOperand(instr->value())); |
| 1538 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1539 | CallRuntime(Runtime::kThrow, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1540 | |
| 1541 | if (FLAG_debug_code) { |
| 1542 | Comment("Unreachable code."); |
| 1543 | __ int3(); |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | |
| 1548 | void LCodeGen::DoAddI(LAddI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1549 | LOperand* left = instr->left(); |
| 1550 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1551 | ASSERT(left->Equals(instr->result())); |
| 1552 | |
| 1553 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1554 | __ add(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1555 | } else { |
| 1556 | __ add(ToRegister(left), ToOperand(right)); |
| 1557 | } |
| 1558 | |
| 1559 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1560 | DeoptimizeIf(overflow, instr->environment()); |
| 1561 | } |
| 1562 | } |
| 1563 | |
| 1564 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1565 | void LCodeGen::DoMathMinMax(LMathMinMax* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1566 | LOperand* left = instr->left(); |
| 1567 | LOperand* right = instr->right(); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1568 | ASSERT(left->Equals(instr->result())); |
| 1569 | HMathMinMax::Operation operation = instr->hydrogen()->operation(); |
| 1570 | if (instr->hydrogen()->representation().IsInteger32()) { |
| 1571 | Label return_left; |
| 1572 | Condition condition = (operation == HMathMinMax::kMathMin) |
| 1573 | ? less_equal |
| 1574 | : greater_equal; |
| 1575 | if (right->IsConstantOperand()) { |
| 1576 | Operand left_op = ToOperand(left); |
| 1577 | Immediate right_imm = ToInteger32Immediate(right); |
| 1578 | __ cmp(left_op, right_imm); |
| 1579 | __ j(condition, &return_left, Label::kNear); |
| 1580 | __ mov(left_op, right_imm); |
| 1581 | } else { |
| 1582 | Register left_reg = ToRegister(left); |
| 1583 | Operand right_op = ToOperand(right); |
| 1584 | __ cmp(left_reg, right_op); |
| 1585 | __ j(condition, &return_left, Label::kNear); |
| 1586 | __ mov(left_reg, right_op); |
| 1587 | } |
| 1588 | __ bind(&return_left); |
| 1589 | } else { |
| 1590 | ASSERT(instr->hydrogen()->representation().IsDouble()); |
| 1591 | Label check_nan_left, check_zero, return_left, return_right; |
| 1592 | Condition condition = (operation == HMathMinMax::kMathMin) ? below : above; |
| 1593 | XMMRegister left_reg = ToDoubleRegister(left); |
| 1594 | XMMRegister right_reg = ToDoubleRegister(right); |
| 1595 | __ ucomisd(left_reg, right_reg); |
| 1596 | __ j(parity_even, &check_nan_left, Label::kNear); // At least one NaN. |
| 1597 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1598 | __ j(condition, &return_left, Label::kNear); |
| 1599 | __ jmp(&return_right, Label::kNear); |
| 1600 | |
| 1601 | __ bind(&check_zero); |
| 1602 | XMMRegister xmm_scratch = xmm0; |
| 1603 | __ xorps(xmm_scratch, xmm_scratch); |
| 1604 | __ ucomisd(left_reg, xmm_scratch); |
| 1605 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1606 | // At this point, both left and right are either 0 or -0. |
| 1607 | if (operation == HMathMinMax::kMathMin) { |
| 1608 | __ orpd(left_reg, right_reg); |
| 1609 | } else { |
| 1610 | // Since we operate on +0 and/or -0, addsd and andsd have the same effect. |
| 1611 | __ addsd(left_reg, right_reg); |
| 1612 | } |
| 1613 | __ jmp(&return_left, Label::kNear); |
| 1614 | |
| 1615 | __ bind(&check_nan_left); |
| 1616 | __ ucomisd(left_reg, left_reg); // NaN check. |
| 1617 | __ j(parity_even, &return_left, Label::kNear); // left == NaN. |
| 1618 | __ bind(&return_right); |
| 1619 | __ movsd(left_reg, right_reg); |
| 1620 | |
| 1621 | __ bind(&return_left); |
| 1622 | } |
| 1623 | } |
| 1624 | |
| 1625 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1626 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1627 | XMMRegister left = ToDoubleRegister(instr->left()); |
| 1628 | XMMRegister right = ToDoubleRegister(instr->right()); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1629 | XMMRegister result = ToDoubleRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1630 | // Modulo uses a fixed result register. |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1631 | ASSERT(instr->op() == Token::MOD || left.is(result)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1632 | switch (instr->op()) { |
| 1633 | case Token::ADD: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1634 | __ addsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1635 | break; |
| 1636 | case Token::SUB: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1637 | __ subsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1638 | break; |
| 1639 | case Token::MUL: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1640 | __ mulsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1641 | break; |
| 1642 | case Token::DIV: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1643 | __ divsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1644 | break; |
| 1645 | case Token::MOD: { |
| 1646 | // Pass two doubles as arguments on the stack. |
| 1647 | __ PrepareCallCFunction(4, eax); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1648 | __ movdbl(Operand(esp, 0 * kDoubleSize), left); |
| 1649 | __ movdbl(Operand(esp, 1 * kDoubleSize), right); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1650 | __ CallCFunction( |
| 1651 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1652 | 4); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1653 | |
| 1654 | // Return value is in st(0) on ia32. |
| 1655 | // Store it into the (fixed) result register. |
| 1656 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 1657 | __ fstp_d(Operand(esp, 0)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1658 | __ movdbl(result, Operand(esp, 0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1659 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 1660 | break; |
| 1661 | } |
| 1662 | default: |
| 1663 | UNREACHABLE(); |
| 1664 | break; |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | |
| 1669 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1670 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1671 | ASSERT(ToRegister(instr->left()).is(edx)); |
| 1672 | ASSERT(ToRegister(instr->right()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1673 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 1674 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1675 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1676 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1677 | __ nop(); // Signals no inlined code. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1678 | } |
| 1679 | |
| 1680 | |
| 1681 | int LCodeGen::GetNextEmittedBlock(int block) { |
| 1682 | for (int i = block + 1; i < graph()->blocks()->length(); ++i) { |
| 1683 | LLabel* label = chunk_->GetLabel(i); |
| 1684 | if (!label->HasReplacement()) return i; |
| 1685 | } |
| 1686 | return -1; |
| 1687 | } |
| 1688 | |
| 1689 | |
| 1690 | void LCodeGen::EmitBranch(int left_block, int right_block, Condition cc) { |
| 1691 | int next_block = GetNextEmittedBlock(current_block_); |
| 1692 | right_block = chunk_->LookupDestination(right_block); |
| 1693 | left_block = chunk_->LookupDestination(left_block); |
| 1694 | |
| 1695 | if (right_block == left_block) { |
| 1696 | EmitGoto(left_block); |
| 1697 | } else if (left_block == next_block) { |
| 1698 | __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); |
| 1699 | } else if (right_block == next_block) { |
| 1700 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1701 | } else { |
| 1702 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1703 | __ jmp(chunk_->GetAssemblyLabel(right_block)); |
| 1704 | } |
| 1705 | } |
| 1706 | |
| 1707 | |
| 1708 | void LCodeGen::DoBranch(LBranch* instr) { |
| 1709 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1710 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1711 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1712 | Representation r = instr->hydrogen()->value()->representation(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1713 | if (r.IsInteger32()) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1714 | Register reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1715 | __ test(reg, Operand(reg)); |
| 1716 | EmitBranch(true_block, false_block, not_zero); |
| 1717 | } else if (r.IsDouble()) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1718 | XMMRegister reg = ToDoubleRegister(instr->value()); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1719 | __ xorps(xmm0, xmm0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1720 | __ ucomisd(reg, xmm0); |
| 1721 | EmitBranch(true_block, false_block, not_equal); |
| 1722 | } else { |
| 1723 | ASSERT(r.IsTagged()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1724 | Register reg = ToRegister(instr->value()); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1725 | HType type = instr->hydrogen()->value()->type(); |
| 1726 | if (type.IsBoolean()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1727 | __ cmp(reg, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1728 | EmitBranch(true_block, false_block, equal); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1729 | } else if (type.IsSmi()) { |
| 1730 | __ test(reg, Operand(reg)); |
| 1731 | EmitBranch(true_block, false_block, not_equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1732 | } else { |
| 1733 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1734 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1735 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1736 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 1737 | // Avoid deopts in the case where we've never executed this path before. |
| 1738 | if (expected.IsEmpty()) expected = ToBooleanStub::all_types(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1739 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1740 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 1741 | // undefined -> false. |
| 1742 | __ cmp(reg, factory()->undefined_value()); |
| 1743 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1744 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1745 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 1746 | // true -> true. |
| 1747 | __ cmp(reg, factory()->true_value()); |
| 1748 | __ j(equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1749 | // false -> false. |
| 1750 | __ cmp(reg, factory()->false_value()); |
| 1751 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1752 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1753 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 1754 | // 'null' -> false. |
| 1755 | __ cmp(reg, factory()->null_value()); |
| 1756 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1757 | } |
| 1758 | |
| 1759 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 1760 | // Smis: 0 -> false, all other -> true. |
| 1761 | __ test(reg, Operand(reg)); |
| 1762 | __ j(equal, false_label); |
| 1763 | __ JumpIfSmi(reg, true_label); |
| 1764 | } else if (expected.NeedsMap()) { |
| 1765 | // If we need a map later and have a Smi -> deopt. |
| 1766 | __ test(reg, Immediate(kSmiTagMask)); |
| 1767 | DeoptimizeIf(zero, instr->environment()); |
| 1768 | } |
| 1769 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1770 | Register map = no_reg; // Keep the compiler happy. |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1771 | if (expected.NeedsMap()) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1772 | map = ToRegister(instr->temp()); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1773 | ASSERT(!map.is(reg)); |
| 1774 | __ mov(map, FieldOperand(reg, HeapObject::kMapOffset)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1775 | |
| 1776 | if (expected.CanBeUndetectable()) { |
| 1777 | // Undetectable -> false. |
| 1778 | __ test_b(FieldOperand(map, Map::kBitFieldOffset), |
| 1779 | 1 << Map::kIsUndetectable); |
| 1780 | __ j(not_zero, false_label); |
| 1781 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1782 | } |
| 1783 | |
| 1784 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 1785 | // spec object -> true. |
| 1786 | __ CmpInstanceType(map, FIRST_SPEC_OBJECT_TYPE); |
| 1787 | __ j(above_equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1788 | } |
| 1789 | |
| 1790 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 1791 | // String value -> false iff empty. |
| 1792 | Label not_string; |
| 1793 | __ CmpInstanceType(map, FIRST_NONSTRING_TYPE); |
| 1794 | __ j(above_equal, ¬_string, Label::kNear); |
| 1795 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
| 1796 | __ j(not_zero, true_label); |
| 1797 | __ jmp(false_label); |
| 1798 | __ bind(¬_string); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1802 | // heap number -> false iff +0, -0, or NaN. |
| 1803 | Label not_heap_number; |
| 1804 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| 1805 | factory()->heap_number_map()); |
| 1806 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 1807 | __ fldz(); |
| 1808 | __ fld_d(FieldOperand(reg, HeapNumber::kValueOffset)); |
| 1809 | __ FCmp(); |
| 1810 | __ j(zero, false_label); |
| 1811 | __ jmp(true_label); |
| 1812 | __ bind(¬_heap_number); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1813 | } |
| 1814 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1815 | // We've seen something for the first time -> deopt. |
| 1816 | DeoptimizeIf(no_condition, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1817 | } |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1822 | void LCodeGen::EmitGoto(int block) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1823 | block = chunk_->LookupDestination(block); |
| 1824 | int next_block = GetNextEmittedBlock(current_block_); |
| 1825 | if (block != next_block) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1826 | __ jmp(chunk_->GetAssemblyLabel(block)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1827 | } |
| 1828 | } |
| 1829 | |
| 1830 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1831 | void LCodeGen::DoGoto(LGoto* instr) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1832 | EmitGoto(instr->block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1833 | } |
| 1834 | |
| 1835 | |
| 1836 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 1837 | Condition cond = no_condition; |
| 1838 | switch (op) { |
| 1839 | case Token::EQ: |
| 1840 | case Token::EQ_STRICT: |
| 1841 | cond = equal; |
| 1842 | break; |
| 1843 | case Token::LT: |
| 1844 | cond = is_unsigned ? below : less; |
| 1845 | break; |
| 1846 | case Token::GT: |
| 1847 | cond = is_unsigned ? above : greater; |
| 1848 | break; |
| 1849 | case Token::LTE: |
| 1850 | cond = is_unsigned ? below_equal : less_equal; |
| 1851 | break; |
| 1852 | case Token::GTE: |
| 1853 | cond = is_unsigned ? above_equal : greater_equal; |
| 1854 | break; |
| 1855 | case Token::IN: |
| 1856 | case Token::INSTANCEOF: |
| 1857 | default: |
| 1858 | UNREACHABLE(); |
| 1859 | } |
| 1860 | return cond; |
| 1861 | } |
| 1862 | |
| 1863 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1864 | void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1865 | LOperand* left = instr->left(); |
| 1866 | LOperand* right = instr->right(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1867 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1868 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1869 | Condition cc = TokenToCondition(instr->op(), instr->is_double()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1870 | |
| 1871 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 1872 | // We can statically evaluate the comparison. |
| 1873 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 1874 | double right_val = ToDouble(LConstantOperand::cast(right)); |
| 1875 | int next_block = |
| 1876 | EvalComparison(instr->op(), left_val, right_val) ? true_block |
| 1877 | : false_block; |
| 1878 | EmitGoto(next_block); |
| 1879 | } else { |
| 1880 | if (instr->is_double()) { |
| 1881 | // Don't base result on EFLAGS when a NaN is involved. Instead |
| 1882 | // jump to the false block. |
| 1883 | __ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
| 1884 | __ j(parity_even, chunk_->GetAssemblyLabel(false_block)); |
| 1885 | } else { |
| 1886 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1887 | __ cmp(ToRegister(left), ToInteger32Immediate(right)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1888 | } else if (left->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1889 | __ cmp(ToOperand(right), ToInteger32Immediate(left)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1890 | // We transposed the operands. Reverse the condition. |
| 1891 | cc = ReverseCondition(cc); |
| 1892 | } else { |
| 1893 | __ cmp(ToRegister(left), ToOperand(right)); |
| 1894 | } |
| 1895 | } |
| 1896 | EmitBranch(true_block, false_block, cc); |
| 1897 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1898 | } |
| 1899 | |
| 1900 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1901 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1902 | Register left = ToRegister(instr->left()); |
| 1903 | Operand right = ToOperand(instr->right()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1904 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1905 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1906 | |
| 1907 | __ cmp(left, Operand(right)); |
| 1908 | EmitBranch(true_block, false_block, equal); |
| 1909 | } |
| 1910 | |
| 1911 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1912 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1913 | Register left = ToRegister(instr->left()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1914 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1915 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1916 | |
| 1917 | __ cmp(left, instr->hydrogen()->right()); |
| 1918 | EmitBranch(true_block, false_block, equal); |
| 1919 | } |
| 1920 | |
| 1921 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1922 | void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1923 | Register reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1924 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1925 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1926 | // If the expression is known to be untagged or a smi, then it's definitely |
| 1927 | // not null, and it can't be a an undetectable object. |
| 1928 | if (instr->hydrogen()->representation().IsSpecialization() || |
| 1929 | instr->hydrogen()->type().IsSmi()) { |
| 1930 | EmitGoto(false_block); |
| 1931 | return; |
| 1932 | } |
| 1933 | |
| 1934 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1935 | Handle<Object> nil_value = instr->nil() == kNullValue ? |
| 1936 | factory()->null_value() : |
| 1937 | factory()->undefined_value(); |
| 1938 | __ cmp(reg, nil_value); |
| 1939 | if (instr->kind() == kStrictEquality) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1940 | EmitBranch(true_block, false_block, equal); |
| 1941 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1942 | Handle<Object> other_nil_value = instr->nil() == kNullValue ? |
| 1943 | factory()->undefined_value() : |
| 1944 | factory()->null_value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1945 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1946 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1947 | __ j(equal, true_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1948 | __ cmp(reg, other_nil_value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1949 | __ j(equal, true_label); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1950 | __ JumpIfSmi(reg, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1951 | // Check for undetectable objects by looking in the bit field in |
| 1952 | // the map. The object has already been smi checked. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1953 | Register scratch = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1954 | __ mov(scratch, FieldOperand(reg, HeapObject::kMapOffset)); |
| 1955 | __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset)); |
| 1956 | __ test(scratch, Immediate(1 << Map::kIsUndetectable)); |
| 1957 | EmitBranch(true_block, false_block, not_zero); |
| 1958 | } |
| 1959 | } |
| 1960 | |
| 1961 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1962 | Condition LCodeGen::EmitIsObject(Register input, |
| 1963 | Register temp1, |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1964 | Label* is_not_object, |
| 1965 | Label* is_object) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1966 | __ JumpIfSmi(input, is_not_object); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1967 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1968 | __ cmp(input, isolate()->factory()->null_value()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1969 | __ j(equal, is_object); |
| 1970 | |
| 1971 | __ mov(temp1, FieldOperand(input, HeapObject::kMapOffset)); |
| 1972 | // Undetectable objects behave like undefined. |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1973 | __ test_b(FieldOperand(temp1, Map::kBitFieldOffset), |
| 1974 | 1 << Map::kIsUndetectable); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1975 | __ j(not_zero, is_not_object); |
| 1976 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1977 | __ movzx_b(temp1, FieldOperand(temp1, Map::kInstanceTypeOffset)); |
| 1978 | __ cmp(temp1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1979 | __ j(below, is_not_object); |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1980 | __ cmp(temp1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1981 | return below_equal; |
| 1982 | } |
| 1983 | |
| 1984 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1985 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 1986 | Register reg = ToRegister(instr->value()); |
| 1987 | Register temp = ToRegister(instr->temp()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1988 | |
| 1989 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1990 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1991 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1992 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1993 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1994 | Condition true_cond = EmitIsObject(reg, temp, false_label, true_label); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1995 | |
| 1996 | EmitBranch(true_block, false_block, true_cond); |
| 1997 | } |
| 1998 | |
| 1999 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2000 | Condition LCodeGen::EmitIsString(Register input, |
| 2001 | Register temp1, |
| 2002 | Label* is_not_string) { |
| 2003 | __ JumpIfSmi(input, is_not_string); |
| 2004 | |
| 2005 | Condition cond = masm_->IsObjectStringType(input, temp1, temp1); |
| 2006 | |
| 2007 | return cond; |
| 2008 | } |
| 2009 | |
| 2010 | |
| 2011 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2012 | Register reg = ToRegister(instr->value()); |
| 2013 | Register temp = ToRegister(instr->temp()); |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2014 | |
| 2015 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2016 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2017 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2018 | |
| 2019 | Condition true_cond = EmitIsString(reg, temp, false_label); |
| 2020 | |
| 2021 | EmitBranch(true_block, false_block, true_cond); |
| 2022 | } |
| 2023 | |
| 2024 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2025 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2026 | Operand input = ToOperand(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2027 | |
| 2028 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2029 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2030 | |
| 2031 | __ test(input, Immediate(kSmiTagMask)); |
| 2032 | EmitBranch(true_block, false_block, zero); |
| 2033 | } |
| 2034 | |
| 2035 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2036 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2037 | Register input = ToRegister(instr->value()); |
| 2038 | Register temp = ToRegister(instr->temp()); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2039 | |
| 2040 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2041 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2042 | |
| 2043 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2044 | __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2045 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 2046 | __ test_b(FieldOperand(temp, Map::kBitFieldOffset), |
| 2047 | 1 << Map::kIsUndetectable); |
| 2048 | EmitBranch(true_block, false_block, not_zero); |
| 2049 | } |
| 2050 | |
| 2051 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 2052 | static Condition ComputeCompareCondition(Token::Value op) { |
| 2053 | switch (op) { |
| 2054 | case Token::EQ_STRICT: |
| 2055 | case Token::EQ: |
| 2056 | return equal; |
| 2057 | case Token::LT: |
| 2058 | return less; |
| 2059 | case Token::GT: |
| 2060 | return greater; |
| 2061 | case Token::LTE: |
| 2062 | return less_equal; |
| 2063 | case Token::GTE: |
| 2064 | return greater_equal; |
| 2065 | default: |
| 2066 | UNREACHABLE(); |
| 2067 | return no_condition; |
| 2068 | } |
| 2069 | } |
| 2070 | |
| 2071 | |
| 2072 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 2073 | Token::Value op = instr->op(); |
| 2074 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2075 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2076 | |
| 2077 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
| 2078 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2079 | |
| 2080 | Condition condition = ComputeCompareCondition(op); |
| 2081 | __ test(eax, Operand(eax)); |
| 2082 | |
| 2083 | EmitBranch(true_block, false_block, condition); |
| 2084 | } |
| 2085 | |
| 2086 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2087 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2088 | InstanceType from = instr->from(); |
| 2089 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2090 | if (from == FIRST_TYPE) return to; |
| 2091 | ASSERT(from == to || to == LAST_TYPE); |
| 2092 | return from; |
| 2093 | } |
| 2094 | |
| 2095 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2096 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2097 | InstanceType from = instr->from(); |
| 2098 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2099 | if (from == to) return equal; |
| 2100 | if (to == LAST_TYPE) return above_equal; |
| 2101 | if (from == FIRST_TYPE) return below_equal; |
| 2102 | UNREACHABLE(); |
| 2103 | return equal; |
| 2104 | } |
| 2105 | |
| 2106 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2107 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2108 | Register input = ToRegister(instr->value()); |
| 2109 | Register temp = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2110 | |
| 2111 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2112 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2113 | |
| 2114 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2115 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2116 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2117 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2118 | __ CmpObjectType(input, TestType(instr->hydrogen()), temp); |
| 2119 | EmitBranch(true_block, false_block, BranchCondition(instr->hydrogen())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2120 | } |
| 2121 | |
| 2122 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2123 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2124 | Register input = ToRegister(instr->value()); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2125 | Register result = ToRegister(instr->result()); |
| 2126 | |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2127 | __ AssertString(input); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2128 | |
| 2129 | __ mov(result, FieldOperand(input, String::kHashFieldOffset)); |
| 2130 | __ IndexFromHash(result, result); |
| 2131 | } |
| 2132 | |
| 2133 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2134 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 2135 | LHasCachedArrayIndexAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2136 | Register input = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2137 | |
| 2138 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2139 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2140 | |
| 2141 | __ test(FieldOperand(input, String::kHashFieldOffset), |
| 2142 | Immediate(String::kContainsCachedArrayIndexMask)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2143 | EmitBranch(true_block, false_block, equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2144 | } |
| 2145 | |
| 2146 | |
| 2147 | // Branches to a label or falls through with the answer in the z flag. Trashes |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2148 | // the temp registers, but not the input. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2149 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 2150 | Label* is_false, |
| 2151 | Handle<String>class_name, |
| 2152 | Register input, |
| 2153 | Register temp, |
| 2154 | Register temp2) { |
| 2155 | ASSERT(!input.is(temp)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2156 | ASSERT(!input.is(temp2)); |
| 2157 | ASSERT(!temp.is(temp2)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2158 | __ JumpIfSmi(input, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2159 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2160 | if (class_name->IsEqualTo(CStrVector("Function"))) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2161 | // Assuming the following assertions, we can use the same compares to test |
| 2162 | // for both being a function type and being in the object type range. |
| 2163 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2164 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2165 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 2166 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2167 | LAST_SPEC_OBJECT_TYPE - 1); |
| 2168 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 2169 | __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
| 2170 | __ j(below, is_false); |
| 2171 | __ j(equal, is_true); |
| 2172 | __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
| 2173 | __ j(equal, is_true); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2174 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2175 | // Faster code path to avoid two compares: subtract lower bound from the |
| 2176 | // actual type and do a signed compare with the width of the type range. |
| 2177 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2178 | __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2179 | __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2180 | __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2181 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2182 | __ j(above, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2183 | } |
| 2184 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2185 | // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2186 | // Check if the constructor in the map is a function. |
| 2187 | __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2188 | // Objects with a non-function constructor have class 'Object'. |
| 2189 | __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); |
| 2190 | if (class_name->IsEqualTo(CStrVector("Object"))) { |
| 2191 | __ j(not_equal, is_true); |
| 2192 | } else { |
| 2193 | __ j(not_equal, is_false); |
| 2194 | } |
| 2195 | |
| 2196 | // temp now contains the constructor function. Grab the |
| 2197 | // instance class name from there. |
| 2198 | __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 2199 | __ mov(temp, FieldOperand(temp, |
| 2200 | SharedFunctionInfo::kInstanceClassNameOffset)); |
| 2201 | // The class name we are testing against is a symbol because it's a literal. |
| 2202 | // The name in the constructor is a symbol because of the way the context is |
| 2203 | // booted. This routine isn't expected to work for random API-created |
| 2204 | // classes and it doesn't have to because you can't access it with natives |
| 2205 | // syntax. Since both sides are symbols it is sufficient to use an identity |
| 2206 | // comparison. |
| 2207 | __ cmp(temp, class_name); |
| 2208 | // End with the answer in the z flag. |
| 2209 | } |
| 2210 | |
| 2211 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2212 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2213 | Register input = ToRegister(instr->value()); |
| 2214 | Register temp = ToRegister(instr->temp()); |
| 2215 | Register temp2 = ToRegister(instr->temp2()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2216 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2217 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 2218 | |
| 2219 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2220 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2221 | |
| 2222 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 2223 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2224 | |
| 2225 | EmitClassOfTest(true_label, false_label, class_name, input, temp, temp2); |
| 2226 | |
| 2227 | EmitBranch(true_block, false_block, equal); |
| 2228 | } |
| 2229 | |
| 2230 | |
| 2231 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2232 | Register reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2233 | int true_block = instr->true_block_id(); |
| 2234 | int false_block = instr->false_block_id(); |
| 2235 | |
| 2236 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map()); |
| 2237 | EmitBranch(true_block, false_block, equal); |
| 2238 | } |
| 2239 | |
| 2240 | |
| 2241 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2242 | // Object and function are in fixed registers defined by the stub. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2243 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2244 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2245 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2246 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2247 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2248 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2249 | __ j(zero, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2250 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2251 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2252 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2253 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2254 | __ bind(&done); |
| 2255 | } |
| 2256 | |
| 2257 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2258 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 2259 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 2260 | public: |
| 2261 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2262 | LInstanceOfKnownGlobal* instr) |
| 2263 | : LDeferredCode(codegen), instr_(instr) { } |
| 2264 | virtual void Generate() { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2265 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2266 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2267 | virtual LInstruction* instr() { return instr_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2268 | Label* map_check() { return &map_check_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2269 | private: |
| 2270 | LInstanceOfKnownGlobal* instr_; |
| 2271 | Label map_check_; |
| 2272 | }; |
| 2273 | |
| 2274 | DeferredInstanceOfKnownGlobal* deferred; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2275 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2276 | |
| 2277 | Label done, false_result; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2278 | Register object = ToRegister(instr->value()); |
| 2279 | Register temp = ToRegister(instr->temp()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2280 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2281 | // A Smi is not an instance of anything. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2282 | __ JumpIfSmi(object, &false_result); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2283 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2284 | // This is the inlined call site instanceof cache. The two occurences of the |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2285 | // hole value will be patched to the last map/result pair generated by the |
| 2286 | // instanceof stub. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2287 | Label cache_miss; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2288 | Register map = ToRegister(instr->temp()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2289 | __ mov(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2290 | __ bind(deferred->map_check()); // Label for calculating code patching. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2291 | Handle<JSGlobalPropertyCell> cache_cell = |
| 2292 | factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
| 2293 | __ cmp(map, Operand::Cell(cache_cell)); // Patched to cached map. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2294 | __ j(not_equal, &cache_miss, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2295 | __ mov(eax, factory()->the_hole_value()); // Patched to either true or false. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2296 | __ jmp(&done); |
| 2297 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2298 | // The inlined call site cache did not match. Check for null and string |
| 2299 | // before calling the deferred code. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2300 | __ bind(&cache_miss); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2301 | // Null is not an instance of anything. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2302 | __ cmp(object, factory()->null_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2303 | __ j(equal, &false_result); |
| 2304 | |
| 2305 | // String values are not instances of anything. |
| 2306 | Condition is_string = masm_->IsObjectStringType(object, temp, temp); |
| 2307 | __ j(is_string, &false_result); |
| 2308 | |
| 2309 | // Go to the deferred code. |
| 2310 | __ jmp(deferred->entry()); |
| 2311 | |
| 2312 | __ bind(&false_result); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2313 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2314 | |
| 2315 | // Here result has either true or false. Deferred code also produces true or |
| 2316 | // false object. |
| 2317 | __ bind(deferred->exit()); |
| 2318 | __ bind(&done); |
| 2319 | } |
| 2320 | |
| 2321 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2322 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2323 | Label* map_check) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2324 | PushSafepointRegistersScope scope(this); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2325 | |
| 2326 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2327 | flags = static_cast<InstanceofStub::Flags>( |
| 2328 | flags | InstanceofStub::kArgsInRegisters); |
| 2329 | flags = static_cast<InstanceofStub::Flags>( |
| 2330 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2331 | flags = static_cast<InstanceofStub::Flags>( |
| 2332 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2333 | InstanceofStub stub(flags); |
| 2334 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2335 | // Get the temp register reserved by the instruction. This needs to be a |
| 2336 | // register which is pushed last by PushSafepointRegisters as top of the |
| 2337 | // stack is used to pass the offset to the location of the map check to |
| 2338 | // the stub. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2339 | Register temp = ToRegister(instr->temp()); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2340 | ASSERT(MacroAssembler::SafepointRegisterStackIndex(temp) == 0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2341 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2342 | static const int kAdditionalDelta = 13; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2343 | int delta = masm_->SizeOfCodeGeneratedSince(map_check) + kAdditionalDelta; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2344 | __ mov(temp, Immediate(delta)); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2345 | __ StoreToSafepointRegisterSlot(temp, temp); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2346 | CallCodeGeneric(stub.GetCode(), |
| 2347 | RelocInfo::CODE_TARGET, |
| 2348 | instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2349 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2350 | // Get the deoptimization index of the LLazyBailout-environment that |
| 2351 | // corresponds to this instruction. |
| 2352 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2353 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
| 2354 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2355 | // Put the result value into the eax slot and restore all registers. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2356 | __ StoreToSafepointRegisterSlot(eax, eax); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2357 | } |
| 2358 | |
| 2359 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2360 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2361 | Token::Value op = instr->op(); |
| 2362 | |
| 2363 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2364 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2365 | |
| 2366 | Condition condition = ComputeCompareCondition(op); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2367 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2368 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2369 | __ j(condition, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2370 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2371 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2372 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2373 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2374 | __ bind(&done); |
| 2375 | } |
| 2376 | |
| 2377 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2378 | void LCodeGen::DoReturn(LReturn* instr) { |
| 2379 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2380 | // Preserve the return value on the stack and rely on the runtime call |
| 2381 | // to return the value in the same register. We're leaving the code |
| 2382 | // managed by the register allocator and tearing down the frame, it's |
| 2383 | // safe to write to the context register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2384 | __ push(eax); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2385 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2386 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2387 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2388 | if (dynamic_frame_alignment_) { |
| 2389 | // Fetch the state of the dynamic frame alignment. |
| 2390 | __ mov(edx, Operand(ebp, |
| 2391 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); |
| 2392 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2393 | __ mov(esp, ebp); |
| 2394 | __ pop(ebp); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2395 | if (dynamic_frame_alignment_) { |
| 2396 | Label no_padding; |
| 2397 | __ cmp(edx, Immediate(kNoAlignmentPadding)); |
| 2398 | __ j(equal, &no_padding); |
| 2399 | if (FLAG_debug_code) { |
| 2400 | __ cmp(Operand(esp, (GetParameterCount() + 2) * kPointerSize), |
| 2401 | Immediate(kAlignmentZapValue)); |
| 2402 | __ Assert(equal, "expected alignment marker"); |
| 2403 | } |
| 2404 | __ Ret((GetParameterCount() + 2) * kPointerSize, ecx); |
| 2405 | __ bind(&no_padding); |
| 2406 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2407 | __ Ret((GetParameterCount() + 1) * kPointerSize, ecx); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2408 | } |
| 2409 | |
| 2410 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2411 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2412 | Register result = ToRegister(instr->result()); |
| 2413 | __ mov(result, Operand::Cell(instr->hydrogen()->cell())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2414 | if (instr->hydrogen()->RequiresHoleCheck()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2415 | __ cmp(result, factory()->the_hole_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2416 | DeoptimizeIf(equal, instr->environment()); |
| 2417 | } |
| 2418 | } |
| 2419 | |
| 2420 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2421 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2422 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2423 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2424 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2425 | |
| 2426 | __ mov(ecx, instr->name()); |
| 2427 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET : |
| 2428 | RelocInfo::CODE_TARGET_CONTEXT; |
| 2429 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2430 | CallCode(ic, mode, instr); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2431 | } |
| 2432 | |
| 2433 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2434 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2435 | Register value = ToRegister(instr->value()); |
| 2436 | Handle<JSGlobalPropertyCell> cell_handle = instr->hydrogen()->cell(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2437 | |
| 2438 | // If the cell we are storing to contains the hole it could have |
| 2439 | // been deleted from the property dictionary. In that case, we need |
| 2440 | // to update the property details in the property dictionary to mark |
| 2441 | // it as no longer deleted. We deoptimize in that case. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2442 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2443 | __ cmp(Operand::Cell(cell_handle), factory()->the_hole_value()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2444 | DeoptimizeIf(equal, instr->environment()); |
| 2445 | } |
| 2446 | |
| 2447 | // Store the value. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2448 | __ mov(Operand::Cell(cell_handle), value); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2449 | // Cells are always rescanned, so no write barrier here. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2450 | } |
| 2451 | |
| 2452 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2453 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2454 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 2455 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
| 2456 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 2457 | |
| 2458 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2459 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2460 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2461 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2462 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2463 | } |
| 2464 | |
| 2465 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2466 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2467 | Register context = ToRegister(instr->context()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2468 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2469 | __ mov(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2470 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2471 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2472 | __ cmp(result, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2473 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2474 | DeoptimizeIf(equal, instr->environment()); |
| 2475 | } else { |
| 2476 | Label is_not_hole; |
| 2477 | __ j(not_equal, &is_not_hole, Label::kNear); |
| 2478 | __ mov(result, factory()->undefined_value()); |
| 2479 | __ bind(&is_not_hole); |
| 2480 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2481 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2482 | } |
| 2483 | |
| 2484 | |
| 2485 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2486 | Register context = ToRegister(instr->context()); |
| 2487 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2488 | |
| 2489 | Label skip_assignment; |
| 2490 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2491 | Operand target = ContextOperand(context, instr->slot_index()); |
| 2492 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2493 | __ cmp(target, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2494 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2495 | DeoptimizeIf(equal, instr->environment()); |
| 2496 | } else { |
| 2497 | __ j(not_equal, &skip_assignment, Label::kNear); |
| 2498 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2499 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2500 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2501 | __ mov(target, value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2502 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 2503 | HType type = instr->hydrogen()->value()->type(); |
| 2504 | SmiCheck check_needed = |
| 2505 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2506 | Register temp = ToRegister(instr->temp()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2507 | int offset = Context::SlotOffset(instr->slot_index()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2508 | __ RecordWriteContextSlot(context, |
| 2509 | offset, |
| 2510 | value, |
| 2511 | temp, |
| 2512 | kSaveFPRegs, |
| 2513 | EMIT_REMEMBERED_SET, |
| 2514 | check_needed); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2515 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2516 | |
| 2517 | __ bind(&skip_assignment); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2518 | } |
| 2519 | |
| 2520 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2521 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2522 | Register object = ToRegister(instr->object()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2523 | Register result = ToRegister(instr->result()); |
| 2524 | if (instr->hydrogen()->is_in_object()) { |
| 2525 | __ mov(result, FieldOperand(object, instr->hydrogen()->offset())); |
| 2526 | } else { |
| 2527 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2528 | __ mov(result, FieldOperand(result, instr->hydrogen()->offset())); |
| 2529 | } |
| 2530 | } |
| 2531 | |
| 2532 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2533 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2534 | Register object, |
| 2535 | Handle<Map> type, |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2536 | Handle<String> name, |
| 2537 | LEnvironment* env) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2538 | LookupResult lookup(isolate()); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 2539 | type->LookupDescriptor(NULL, *name, &lookup); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2540 | ASSERT(lookup.IsFound() || lookup.IsCacheable()); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2541 | if (lookup.IsField()) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2542 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2543 | int offset = index * kPointerSize; |
| 2544 | if (index < 0) { |
| 2545 | // Negative property indices are in-object properties, indexed |
| 2546 | // from the end of the fixed part of the object. |
| 2547 | __ mov(result, FieldOperand(object, offset + type->instance_size())); |
| 2548 | } else { |
| 2549 | // Non-negative property indices are in the properties array. |
| 2550 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2551 | __ mov(result, FieldOperand(result, offset + FixedArray::kHeaderSize)); |
| 2552 | } |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2553 | } else if (lookup.IsConstantFunction()) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2554 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2555 | __ LoadHeapObject(result, function); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2556 | } else { |
| 2557 | // Negative lookup. |
| 2558 | // Check prototypes. |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2559 | Handle<HeapObject> current(HeapObject::cast((*type)->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2560 | Heap* heap = type->GetHeap(); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2561 | while (*current != heap->null_value()) { |
| 2562 | __ LoadHeapObject(result, current); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2563 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2564 | Handle<Map>(current->map())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2565 | DeoptimizeIf(not_equal, env); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2566 | current = |
| 2567 | Handle<HeapObject>(HeapObject::cast(current->map()->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2568 | } |
| 2569 | __ mov(result, factory()->undefined_value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2570 | } |
| 2571 | } |
| 2572 | |
| 2573 | |
| 2574 | void LCodeGen::EmitPushTaggedOperand(LOperand* operand) { |
| 2575 | ASSERT(!operand->IsDoubleRegister()); |
| 2576 | if (operand->IsConstantOperand()) { |
| 2577 | Handle<Object> object = ToHandle(LConstantOperand::cast(operand)); |
| 2578 | if (object->IsSmi()) { |
| 2579 | __ Push(Handle<Smi>::cast(object)); |
| 2580 | } else { |
| 2581 | __ PushHeapObject(Handle<HeapObject>::cast(object)); |
| 2582 | } |
| 2583 | } else if (operand->IsRegister()) { |
| 2584 | __ push(ToRegister(operand)); |
| 2585 | } else { |
| 2586 | __ push(ToOperand(operand)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2587 | } |
| 2588 | } |
| 2589 | |
| 2590 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2591 | // Check for cases where EmitLoadFieldOrConstantFunction needs to walk the |
| 2592 | // prototype chain, which causes unbounded code generation. |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2593 | static bool CompactEmit(SmallMapList* list, |
| 2594 | Handle<String> name, |
| 2595 | int i, |
| 2596 | Isolate* isolate) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2597 | Handle<Map> map = list->at(i); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2598 | // If the map has ElementsKind transitions, we will generate map checks |
| 2599 | // for each kind in __ CompareMap(..., ALLOW_ELEMENTS_TRANSITION_MAPS). |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2600 | if (map->HasElementsTransition()) return false; |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2601 | LookupResult lookup(isolate); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2602 | map->LookupDescriptor(NULL, *name, &lookup); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2603 | return lookup.IsField() || lookup.IsConstantFunction(); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2604 | } |
| 2605 | |
| 2606 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2607 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2608 | Register object = ToRegister(instr->object()); |
| 2609 | Register result = ToRegister(instr->result()); |
| 2610 | |
| 2611 | int map_count = instr->hydrogen()->types()->length(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2612 | bool need_generic = instr->hydrogen()->need_generic(); |
| 2613 | |
| 2614 | if (map_count == 0 && !need_generic) { |
| 2615 | DeoptimizeIf(no_condition, instr->environment()); |
| 2616 | return; |
| 2617 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2618 | Handle<String> name = instr->hydrogen()->name(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2619 | Label done; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2620 | bool all_are_compact = true; |
| 2621 | for (int i = 0; i < map_count; ++i) { |
| 2622 | if (!CompactEmit(instr->hydrogen()->types(), name, i, isolate())) { |
| 2623 | all_are_compact = false; |
| 2624 | break; |
| 2625 | } |
| 2626 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2627 | for (int i = 0; i < map_count; ++i) { |
| 2628 | bool last = (i == map_count - 1); |
| 2629 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2630 | Label check_passed; |
| 2631 | __ CompareMap(object, map, &check_passed, ALLOW_ELEMENT_TRANSITION_MAPS); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2632 | if (last && !need_generic) { |
| 2633 | DeoptimizeIf(not_equal, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2634 | __ bind(&check_passed); |
| 2635 | EmitLoadFieldOrConstantFunction( |
| 2636 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2637 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2638 | Label next; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2639 | bool compact = all_are_compact ? true : |
| 2640 | CompactEmit(instr->hydrogen()->types(), name, i, isolate()); |
| 2641 | __ j(not_equal, &next, compact ? Label::kNear : Label::kFar); |
| 2642 | __ bind(&check_passed); |
| 2643 | EmitLoadFieldOrConstantFunction( |
| 2644 | result, object, map, name, instr->environment()); |
| 2645 | __ jmp(&done, all_are_compact ? Label::kNear : Label::kFar); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2646 | __ bind(&next); |
| 2647 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2648 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2649 | if (need_generic) { |
| 2650 | __ mov(ecx, name); |
| 2651 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2652 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2653 | } |
| 2654 | __ bind(&done); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2655 | } |
| 2656 | |
| 2657 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2658 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2659 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2660 | ASSERT(ToRegister(instr->object()).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2661 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2662 | |
| 2663 | __ mov(ecx, instr->name()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2664 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2665 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2666 | } |
| 2667 | |
| 2668 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2669 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2670 | Register function = ToRegister(instr->function()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2671 | Register temp = ToRegister(instr->temp()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2672 | Register result = ToRegister(instr->result()); |
| 2673 | |
| 2674 | // Check that the function really is a function. |
| 2675 | __ CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2676 | DeoptimizeIf(not_equal, instr->environment()); |
| 2677 | |
| 2678 | // Check whether the function has an instance prototype. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2679 | Label non_instance; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2680 | __ test_b(FieldOperand(result, Map::kBitFieldOffset), |
| 2681 | 1 << Map::kHasNonInstancePrototype); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2682 | __ j(not_zero, &non_instance, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2683 | |
| 2684 | // Get the prototype or initial map from the function. |
| 2685 | __ mov(result, |
| 2686 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2687 | |
| 2688 | // Check that the function has a prototype or an initial map. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2689 | __ cmp(Operand(result), Immediate(factory()->the_hole_value())); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2690 | DeoptimizeIf(equal, instr->environment()); |
| 2691 | |
| 2692 | // If the function does not have an initial map, we're done. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2693 | Label done; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2694 | __ CmpObjectType(result, MAP_TYPE, temp); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2695 | __ j(not_equal, &done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2696 | |
| 2697 | // Get the prototype from the initial map. |
| 2698 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2699 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2700 | |
| 2701 | // Non-instance prototype: Fetch prototype from constructor field |
| 2702 | // in the function's map. |
| 2703 | __ bind(&non_instance); |
| 2704 | __ mov(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2705 | |
| 2706 | // All done. |
| 2707 | __ bind(&done); |
| 2708 | } |
| 2709 | |
| 2710 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2711 | void LCodeGen::DoLoadElements(LLoadElements* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2712 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2713 | Register input = ToRegister(instr->object()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2714 | __ mov(result, FieldOperand(input, JSObject::kElementsOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2715 | if (FLAG_debug_code) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2716 | Label done, ok, fail; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2717 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2718 | Immediate(factory()->fixed_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2719 | __ j(equal, &done, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2720 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2721 | Immediate(factory()->fixed_cow_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2722 | __ j(equal, &done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2723 | Register temp((result.is(eax)) ? ebx : eax); |
| 2724 | __ push(temp); |
| 2725 | __ mov(temp, FieldOperand(result, HeapObject::kMapOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2726 | __ movzx_b(temp, FieldOperand(temp, Map::kBitField2Offset)); |
| 2727 | __ and_(temp, Map::kElementsKindMask); |
| 2728 | __ shr(temp, Map::kElementsKindShift); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2729 | __ cmp(temp, GetInitialFastElementsKind()); |
| 2730 | __ j(less, &fail, Label::kNear); |
| 2731 | __ cmp(temp, TERMINAL_FAST_ELEMENTS_KIND); |
| 2732 | __ j(less_equal, &ok, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2733 | __ cmp(temp, FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2734 | __ j(less, &fail, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2735 | __ cmp(temp, LAST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2736 | __ j(less_equal, &ok, Label::kNear); |
| 2737 | __ bind(&fail); |
| 2738 | __ Abort("Check for fast or external elements failed."); |
| 2739 | __ bind(&ok); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2740 | __ pop(temp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2741 | __ bind(&done); |
| 2742 | } |
| 2743 | } |
| 2744 | |
| 2745 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2746 | void LCodeGen::DoLoadExternalArrayPointer( |
| 2747 | LLoadExternalArrayPointer* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2748 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2749 | Register input = ToRegister(instr->object()); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2750 | __ mov(result, FieldOperand(input, |
| 2751 | ExternalArray::kExternalPointerOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2752 | } |
| 2753 | |
| 2754 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2755 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 2756 | Register arguments = ToRegister(instr->arguments()); |
| 2757 | Register length = ToRegister(instr->length()); |
| 2758 | Operand index = ToOperand(instr->index()); |
| 2759 | Register result = ToRegister(instr->result()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2760 | // There are two words between the frame pointer and the last argument. |
| 2761 | // Subtracting from length accounts for one of them add one more. |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 2762 | __ sub(length, index); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2763 | __ mov(result, Operand(arguments, length, times_4, kPointerSize)); |
| 2764 | } |
| 2765 | |
| 2766 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 2767 | void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2768 | ElementsKind elements_kind = instr->elements_kind(); |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2769 | LOperand* key = instr->key(); |
| 2770 | if (!key->IsConstantOperand() && |
| 2771 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 2772 | elements_kind)) { |
| 2773 | __ SmiUntag(ToRegister(key)); |
| 2774 | } |
| 2775 | Operand operand(BuildFastArrayOperand( |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 2776 | instr->elements(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2777 | key, |
| 2778 | instr->hydrogen()->key()->representation(), |
| 2779 | elements_kind, |
| 2780 | 0, |
| 2781 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2782 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2783 | XMMRegister result(ToDoubleRegister(instr->result())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2784 | __ movss(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2785 | __ cvtss2sd(result, result); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2786 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2787 | __ movdbl(ToDoubleRegister(instr->result()), operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2788 | } else { |
| 2789 | Register result(ToRegister(instr->result())); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2790 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2791 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2792 | __ movsx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2793 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2794 | case EXTERNAL_PIXEL_ELEMENTS: |
| 2795 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2796 | __ movzx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2797 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2798 | case EXTERNAL_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2799 | __ movsx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2800 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2801 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2802 | __ movzx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2803 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2804 | case EXTERNAL_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2805 | __ mov(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2806 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2807 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2808 | __ mov(result, operand); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2809 | if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) { |
| 2810 | __ test(result, Operand(result)); |
| 2811 | DeoptimizeIf(negative, instr->environment()); |
| 2812 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2813 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2814 | case EXTERNAL_FLOAT_ELEMENTS: |
| 2815 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2816 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2817 | case FAST_ELEMENTS: |
| 2818 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2819 | case FAST_HOLEY_SMI_ELEMENTS: |
| 2820 | case FAST_HOLEY_ELEMENTS: |
| 2821 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2822 | case DICTIONARY_ELEMENTS: |
| 2823 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2824 | UNREACHABLE(); |
| 2825 | break; |
| 2826 | } |
| 2827 | } |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2828 | } |
| 2829 | |
| 2830 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 2831 | void LCodeGen::DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr) { |
| 2832 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 2833 | |
| 2834 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2835 | int offset = FixedDoubleArray::kHeaderSize - kHeapObjectTag + |
| 2836 | sizeof(kHoleNanLower32); |
| 2837 | Operand hole_check_operand = BuildFastArrayOperand( |
| 2838 | instr->elements(), instr->key(), |
| 2839 | instr->hydrogen()->key()->representation(), |
| 2840 | FAST_DOUBLE_ELEMENTS, |
| 2841 | offset, |
| 2842 | instr->additional_index()); |
| 2843 | __ cmp(hole_check_operand, Immediate(kHoleNanUpper32)); |
| 2844 | DeoptimizeIf(equal, instr->environment()); |
| 2845 | } |
| 2846 | |
| 2847 | Operand double_load_operand = BuildFastArrayOperand( |
| 2848 | instr->elements(), |
| 2849 | instr->key(), |
| 2850 | instr->hydrogen()->key()->representation(), |
| 2851 | FAST_DOUBLE_ELEMENTS, |
| 2852 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 2853 | instr->additional_index()); |
| 2854 | __ movdbl(result, double_load_operand); |
| 2855 | } |
| 2856 | |
| 2857 | |
| 2858 | void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) { |
| 2859 | Register result = ToRegister(instr->result()); |
| 2860 | |
| 2861 | // Load the result. |
| 2862 | __ mov(result, |
| 2863 | BuildFastArrayOperand(instr->elements(), |
| 2864 | instr->key(), |
| 2865 | instr->hydrogen()->key()->representation(), |
| 2866 | FAST_ELEMENTS, |
| 2867 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 2868 | instr->additional_index())); |
| 2869 | |
| 2870 | // Check for the hole value. |
| 2871 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2872 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 2873 | __ test(result, Immediate(kSmiTagMask)); |
| 2874 | DeoptimizeIf(not_equal, instr->environment()); |
| 2875 | } else { |
| 2876 | __ cmp(result, factory()->the_hole_value()); |
| 2877 | DeoptimizeIf(equal, instr->environment()); |
| 2878 | } |
| 2879 | } |
| 2880 | } |
| 2881 | |
| 2882 | |
| 2883 | void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) { |
| 2884 | if (instr->is_external()) { |
| 2885 | DoLoadKeyedExternalArray(instr); |
| 2886 | } else if (instr->hydrogen()->representation().IsDouble()) { |
| 2887 | DoLoadKeyedFixedDoubleArray(instr); |
| 2888 | } else { |
| 2889 | DoLoadKeyedFixedArray(instr); |
| 2890 | } |
| 2891 | } |
| 2892 | |
| 2893 | |
| 2894 | Operand LCodeGen::BuildFastArrayOperand( |
| 2895 | LOperand* elements_pointer, |
| 2896 | LOperand* key, |
| 2897 | Representation key_representation, |
| 2898 | ElementsKind elements_kind, |
| 2899 | uint32_t offset, |
| 2900 | uint32_t additional_index) { |
| 2901 | Register elements_pointer_reg = ToRegister(elements_pointer); |
| 2902 | int shift_size = ElementsKindToShiftSize(elements_kind); |
| 2903 | // Even though the HLoad/StoreKeyed instructions force the input |
| 2904 | // representation for the key to be an integer, the input gets replaced during |
| 2905 | // bound check elimination with the index argument to the bounds check, which |
| 2906 | // can be tagged, so that case must be handled here, too. |
| 2907 | if (key_representation.IsTagged() && (shift_size >= 1)) { |
| 2908 | shift_size -= kSmiTagSize; |
| 2909 | } |
| 2910 | if (key->IsConstantOperand()) { |
| 2911 | int constant_value = ToInteger32(LConstantOperand::cast(key)); |
| 2912 | if (constant_value & 0xF0000000) { |
| 2913 | Abort("array index constant value too big"); |
| 2914 | } |
| 2915 | return Operand(elements_pointer_reg, |
| 2916 | ((constant_value + additional_index) << shift_size) |
| 2917 | + offset); |
| 2918 | } else { |
| 2919 | ScaleFactor scale_factor = static_cast<ScaleFactor>(shift_size); |
| 2920 | return Operand(elements_pointer_reg, |
| 2921 | ToRegister(key), |
| 2922 | scale_factor, |
| 2923 | offset + (additional_index << shift_size)); |
| 2924 | } |
| 2925 | } |
| 2926 | |
| 2927 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2928 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2929 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2930 | ASSERT(ToRegister(instr->object()).is(edx)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2931 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2932 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2933 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2934 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2935 | } |
| 2936 | |
| 2937 | |
| 2938 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 2939 | Register result = ToRegister(instr->result()); |
| 2940 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2941 | if (instr->hydrogen()->from_inlined()) { |
| 2942 | __ lea(result, Operand(esp, -2 * kPointerSize)); |
| 2943 | } else { |
| 2944 | // Check for arguments adapter frame. |
| 2945 | Label done, adapted; |
| 2946 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2947 | __ mov(result, Operand(result, StandardFrameConstants::kContextOffset)); |
| 2948 | __ cmp(Operand(result), |
| 2949 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2950 | __ j(equal, &adapted, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2951 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2952 | // No arguments adaptor frame. |
| 2953 | __ mov(result, Operand(ebp)); |
| 2954 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2955 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2956 | // Arguments adaptor frame present. |
| 2957 | __ bind(&adapted); |
| 2958 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2959 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2960 | // Result is the frame pointer for the frame if not adapted and for the real |
| 2961 | // frame below the adaptor frame if adapted. |
| 2962 | __ bind(&done); |
| 2963 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2964 | } |
| 2965 | |
| 2966 | |
| 2967 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2968 | Operand elem = ToOperand(instr->elements()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2969 | Register result = ToRegister(instr->result()); |
| 2970 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2971 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2972 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2973 | // If no arguments adaptor frame the number of arguments is fixed. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2974 | __ cmp(ebp, elem); |
| 2975 | __ mov(result, Immediate(scope()->num_parameters())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2976 | __ j(equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2977 | |
| 2978 | // Arguments adaptor frame present. Get argument length from there. |
| 2979 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2980 | __ mov(result, Operand(result, |
| 2981 | ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2982 | __ SmiUntag(result); |
| 2983 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2984 | // Argument length is in result register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2985 | __ bind(&done); |
| 2986 | } |
| 2987 | |
| 2988 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 2989 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2990 | Register receiver = ToRegister(instr->receiver()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2991 | Register function = ToRegister(instr->function()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 2992 | Register scratch = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2993 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2994 | // If the receiver is null or undefined, we have to pass the global |
| 2995 | // object as a receiver to normal functions. Values have to be |
| 2996 | // passed unchanged to builtins and strict-mode functions. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2997 | Label global_object, receiver_ok; |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2998 | |
| 2999 | // Do not transform the receiver to object for strict mode |
| 3000 | // functions. |
| 3001 | __ mov(scratch, |
| 3002 | FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 3003 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
| 3004 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
danno@chromium.org | 412fa51 | 2012-09-14 13:28:26 +0000 | [diff] [blame] | 3005 | __ j(not_equal, &receiver_ok); // A near jump is not sufficient here! |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3006 | |
| 3007 | // Do not transform the receiver to object for builtins. |
| 3008 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
| 3009 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
danno@chromium.org | 412fa51 | 2012-09-14 13:28:26 +0000 | [diff] [blame] | 3010 | __ j(not_equal, &receiver_ok); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3011 | |
| 3012 | // Normal function. Replace undefined or null with global receiver. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3013 | __ cmp(receiver, factory()->null_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3014 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3015 | __ cmp(receiver, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3016 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3017 | |
| 3018 | // The receiver should be a JS object. |
| 3019 | __ test(receiver, Immediate(kSmiTagMask)); |
| 3020 | DeoptimizeIf(equal, instr->environment()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3021 | __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3022 | DeoptimizeIf(below, instr->environment()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3023 | __ jmp(&receiver_ok, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3024 | |
| 3025 | __ bind(&global_object); |
| 3026 | // TODO(kmillikin): We have a hydrogen value for the global object. See |
| 3027 | // if it's better to use it than to explicitly fetch it from the context |
| 3028 | // here. |
| 3029 | __ mov(receiver, Operand(ebp, StandardFrameConstants::kContextOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3030 | __ mov(receiver, ContextOperand(receiver, Context::GLOBAL_OBJECT_INDEX)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3031 | __ mov(receiver, |
| 3032 | FieldOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3033 | __ bind(&receiver_ok); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 3034 | } |
| 3035 | |
| 3036 | |
| 3037 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 3038 | Register receiver = ToRegister(instr->receiver()); |
| 3039 | Register function = ToRegister(instr->function()); |
| 3040 | Register length = ToRegister(instr->length()); |
| 3041 | Register elements = ToRegister(instr->elements()); |
| 3042 | ASSERT(receiver.is(eax)); // Used for parameter count. |
| 3043 | ASSERT(function.is(edi)); // Required by InvokeFunction. |
| 3044 | ASSERT(ToRegister(instr->result()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3045 | |
| 3046 | // Copy the arguments to this function possibly from the |
| 3047 | // adaptor frame below it. |
| 3048 | const uint32_t kArgumentsLimit = 1 * KB; |
| 3049 | __ cmp(length, kArgumentsLimit); |
| 3050 | DeoptimizeIf(above, instr->environment()); |
| 3051 | |
| 3052 | __ push(receiver); |
| 3053 | __ mov(receiver, length); |
| 3054 | |
| 3055 | // Loop through the arguments pushing them onto the execution |
| 3056 | // stack. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3057 | Label invoke, loop; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3058 | // length is a small non-negative integer, due to the test above. |
| 3059 | __ test(length, Operand(length)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3060 | __ j(zero, &invoke, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3061 | __ bind(&loop); |
| 3062 | __ push(Operand(elements, length, times_pointer_size, 1 * kPointerSize)); |
| 3063 | __ dec(length); |
| 3064 | __ j(not_zero, &loop); |
| 3065 | |
| 3066 | // Invoke the function. |
| 3067 | __ bind(&invoke); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 3068 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3069 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3070 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3071 | SafepointGenerator safepoint_generator( |
| 3072 | this, pointers, Safepoint::kLazyDeopt); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3073 | ParameterCount actual(eax); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3074 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 3075 | safepoint_generator, CALL_AS_METHOD); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3076 | } |
| 3077 | |
| 3078 | |
| 3079 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3080 | LOperand* argument = instr->value(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3081 | EmitPushTaggedOperand(argument); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3082 | } |
| 3083 | |
| 3084 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3085 | void LCodeGen::DoDrop(LDrop* instr) { |
| 3086 | __ Drop(instr->count()); |
| 3087 | } |
| 3088 | |
| 3089 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3090 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 3091 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 3092 | __ mov(result, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3093 | } |
| 3094 | |
| 3095 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3096 | void LCodeGen::DoContext(LContext* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3097 | Register result = ToRegister(instr->result()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3098 | __ mov(result, Operand(ebp, StandardFrameConstants::kContextOffset)); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3099 | } |
| 3100 | |
| 3101 | |
| 3102 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 3103 | Register context = ToRegister(instr->context()); |
| 3104 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3105 | __ mov(result, |
| 3106 | Operand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3107 | } |
| 3108 | |
| 3109 | |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 3110 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3111 | ASSERT(ToRegister(instr->context()).is(esi)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 3112 | __ push(esi); // The context is the first argument. |
| 3113 | __ push(Immediate(instr->hydrogen()->pairs())); |
| 3114 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags()))); |
| 3115 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 3116 | } |
| 3117 | |
| 3118 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3119 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
| 3120 | Register context = ToRegister(instr->context()); |
| 3121 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3122 | __ mov(result, |
| 3123 | Operand(context, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3124 | } |
| 3125 | |
| 3126 | |
| 3127 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3128 | Register global = ToRegister(instr->global()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3129 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3130 | __ mov(result, FieldOperand(global, GlobalObject::kGlobalReceiverOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3131 | } |
| 3132 | |
| 3133 | |
| 3134 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
| 3135 | int arity, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3136 | LInstruction* instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3137 | CallKind call_kind, |
| 3138 | EDIState edi_state) { |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3139 | bool can_invoke_directly = !function->NeedsArgumentsAdaption() || |
| 3140 | function->shared()->formal_parameter_count() == arity; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3141 | |
| 3142 | LPointerMap* pointers = instr->pointer_map(); |
| 3143 | RecordPosition(pointers->position()); |
| 3144 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3145 | if (can_invoke_directly) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3146 | if (edi_state == EDI_UNINITIALIZED) { |
| 3147 | __ LoadHeapObject(edi, function); |
| 3148 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3149 | |
verwaest@chromium.org | b6d052d | 2012-07-27 08:03:27 +0000 | [diff] [blame] | 3150 | // Change context. |
| 3151 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3152 | |
| 3153 | // Set eax to arguments count if adaption is not needed. Assumes that eax |
| 3154 | // is available to write to at this point. |
| 3155 | if (!function->NeedsArgumentsAdaption()) { |
| 3156 | __ mov(eax, arity); |
| 3157 | } |
| 3158 | |
| 3159 | // Invoke function directly. |
| 3160 | __ SetCallKind(ecx, call_kind); |
| 3161 | if (*function == *info()->closure()) { |
| 3162 | __ CallSelf(); |
| 3163 | } else { |
| 3164 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 3165 | } |
| 3166 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3167 | } else { |
| 3168 | // We need to adapt arguments. |
| 3169 | SafepointGenerator generator( |
| 3170 | this, pointers, Safepoint::kLazyDeopt); |
| 3171 | ParameterCount count(arity); |
| 3172 | __ InvokeFunction(function, count, CALL_FUNCTION, generator, call_kind); |
| 3173 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3174 | } |
| 3175 | |
| 3176 | |
| 3177 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 3178 | ASSERT(ToRegister(instr->result()).is(eax)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3179 | CallKnownFunction(instr->function(), |
| 3180 | instr->arity(), |
| 3181 | instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3182 | CALL_AS_METHOD, |
| 3183 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3184 | } |
| 3185 | |
| 3186 | |
| 3187 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3188 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3189 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3190 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3191 | DeoptimizeIf(not_equal, instr->environment()); |
| 3192 | |
| 3193 | Label done; |
| 3194 | Register tmp = input_reg.is(eax) ? ecx : eax; |
| 3195 | Register tmp2 = tmp.is(ecx) ? edx : input_reg.is(ecx) ? edx : ecx; |
| 3196 | |
| 3197 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3198 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3199 | |
| 3200 | Label negative; |
| 3201 | __ mov(tmp, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3202 | // Check the sign of the argument. If the argument is positive, just |
| 3203 | // return it. We do not need to patch the stack since |input| and |
| 3204 | // |result| are the same register and |input| will be restored |
| 3205 | // unchanged by popping safepoint registers. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3206 | __ test(tmp, Immediate(HeapNumber::kSignMask)); |
| 3207 | __ j(not_zero, &negative); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3208 | __ jmp(&done); |
| 3209 | |
| 3210 | __ bind(&negative); |
| 3211 | |
| 3212 | Label allocated, slow; |
| 3213 | __ AllocateHeapNumber(tmp, tmp2, no_reg, &slow); |
| 3214 | __ jmp(&allocated); |
| 3215 | |
| 3216 | // Slow case: Call the runtime system to do the number allocation. |
| 3217 | __ bind(&slow); |
| 3218 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3219 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, |
| 3220 | instr, instr->context()); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3221 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3222 | // Set the pointer to the new heap number in tmp. |
| 3223 | if (!tmp.is(eax)) __ mov(tmp, eax); |
| 3224 | |
| 3225 | // Restore input_reg after call to runtime. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3226 | __ LoadFromSafepointRegisterSlot(input_reg, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3227 | |
| 3228 | __ bind(&allocated); |
| 3229 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 3230 | __ and_(tmp2, ~HeapNumber::kSignMask); |
| 3231 | __ mov(FieldOperand(tmp, HeapNumber::kExponentOffset), tmp2); |
| 3232 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kMantissaOffset)); |
| 3233 | __ mov(FieldOperand(tmp, HeapNumber::kMantissaOffset), tmp2); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3234 | __ StoreToSafepointRegisterSlot(input_reg, tmp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3235 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3236 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3237 | } |
| 3238 | |
| 3239 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3240 | void LCodeGen::EmitIntegerMathAbs(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3241 | Register input_reg = ToRegister(instr->value()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3242 | __ test(input_reg, Operand(input_reg)); |
| 3243 | Label is_positive; |
| 3244 | __ j(not_sign, &is_positive); |
| 3245 | __ neg(input_reg); |
| 3246 | __ test(input_reg, Operand(input_reg)); |
| 3247 | DeoptimizeIf(negative, instr->environment()); |
| 3248 | __ bind(&is_positive); |
| 3249 | } |
| 3250 | |
| 3251 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3252 | void LCodeGen::DoMathAbs(LUnaryMathOperation* instr) { |
| 3253 | // Class for deferred case. |
| 3254 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 3255 | public: |
| 3256 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, |
| 3257 | LUnaryMathOperation* instr) |
| 3258 | : LDeferredCode(codegen), instr_(instr) { } |
| 3259 | virtual void Generate() { |
| 3260 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3261 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3262 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3263 | private: |
| 3264 | LUnaryMathOperation* instr_; |
| 3265 | }; |
| 3266 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3267 | ASSERT(instr->value()->Equals(instr->result())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3268 | Representation r = instr->hydrogen()->value()->representation(); |
| 3269 | |
| 3270 | if (r.IsDouble()) { |
| 3271 | XMMRegister scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3272 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3273 | __ xorps(scratch, scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3274 | __ subsd(scratch, input_reg); |
| 3275 | __ pand(input_reg, scratch); |
| 3276 | } else if (r.IsInteger32()) { |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3277 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3278 | } else { // Tagged case. |
| 3279 | DeferredMathAbsTaggedHeapNumber* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3280 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3281 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3282 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3283 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3284 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3285 | __ bind(deferred->exit()); |
| 3286 | } |
| 3287 | } |
| 3288 | |
| 3289 | |
| 3290 | void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { |
| 3291 | XMMRegister xmm_scratch = xmm0; |
| 3292 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3293 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3294 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3295 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3296 | CpuFeatures::Scope scope(SSE4_1); |
| 3297 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3298 | // Deoptimize on negative zero. |
| 3299 | Label non_zero; |
| 3300 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3301 | __ ucomisd(input_reg, xmm_scratch); |
| 3302 | __ j(not_equal, &non_zero, Label::kNear); |
| 3303 | __ movmskpd(output_reg, input_reg); |
| 3304 | __ test(output_reg, Immediate(1)); |
| 3305 | DeoptimizeIf(not_zero, instr->environment()); |
| 3306 | __ bind(&non_zero); |
| 3307 | } |
| 3308 | __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
| 3309 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
| 3310 | // Overflow is signalled with minint. |
| 3311 | __ cmp(output_reg, 0x80000000u); |
| 3312 | DeoptimizeIf(equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3313 | } else { |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3314 | Label negative_sign, done; |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3315 | // Deoptimize on unordered. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3316 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3317 | __ ucomisd(input_reg, xmm_scratch); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3318 | DeoptimizeIf(parity_even, instr->environment()); |
| 3319 | __ j(below, &negative_sign, Label::kNear); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3320 | |
| 3321 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3322 | // Check for negative zero. |
| 3323 | Label positive_sign; |
| 3324 | __ j(above, &positive_sign, Label::kNear); |
| 3325 | __ movmskpd(output_reg, input_reg); |
| 3326 | __ test(output_reg, Immediate(1)); |
| 3327 | DeoptimizeIf(not_zero, instr->environment()); |
| 3328 | __ Set(output_reg, Immediate(0)); |
| 3329 | __ jmp(&done, Label::kNear); |
| 3330 | __ bind(&positive_sign); |
| 3331 | } |
| 3332 | |
| 3333 | // Use truncating instruction (OK because input is positive). |
| 3334 | __ cvttsd2si(output_reg, Operand(input_reg)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3335 | // Overflow is signalled with minint. |
| 3336 | __ cmp(output_reg, 0x80000000u); |
| 3337 | DeoptimizeIf(equal, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3338 | __ jmp(&done, Label::kNear); |
| 3339 | |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3340 | // Non-zero negative reaches here. |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3341 | __ bind(&negative_sign); |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3342 | // Truncate, then compare and compensate. |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3343 | __ cvttsd2si(output_reg, Operand(input_reg)); |
| 3344 | __ cvtsi2sd(xmm_scratch, output_reg); |
| 3345 | __ ucomisd(input_reg, xmm_scratch); |
| 3346 | __ j(equal, &done, Label::kNear); |
| 3347 | __ sub(output_reg, Immediate(1)); |
| 3348 | DeoptimizeIf(overflow, instr->environment()); |
| 3349 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3350 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3351 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3352 | } |
| 3353 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3354 | void LCodeGen::DoMathRound(LUnaryMathOperation* instr) { |
| 3355 | XMMRegister xmm_scratch = xmm0; |
| 3356 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3357 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3358 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3359 | Label below_half, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3360 | // xmm_scratch = 0.5 |
| 3361 | ExternalReference one_half = ExternalReference::address_of_one_half(); |
| 3362 | __ movdbl(xmm_scratch, Operand::StaticVariable(one_half)); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3363 | __ ucomisd(xmm_scratch, input_reg); |
| 3364 | __ j(above, &below_half); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3365 | // xmm_scratch = input + 0.5 |
| 3366 | __ addsd(xmm_scratch, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3367 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3368 | // Compute Math.floor(value + 0.5). |
| 3369 | // Use truncating instruction (OK because input is positive). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3370 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3371 | |
| 3372 | // Overflow is signalled with minint. |
| 3373 | __ cmp(output_reg, 0x80000000u); |
| 3374 | DeoptimizeIf(equal, instr->environment()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3375 | __ jmp(&done); |
| 3376 | |
| 3377 | __ bind(&below_half); |
| 3378 | |
| 3379 | // We return 0 for the input range [+0, 0.5[, or [-0.5, 0.5[ if |
| 3380 | // we can ignore the difference between a result of -0 and +0. |
| 3381 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3382 | // If the sign is positive, we return +0. |
| 3383 | __ movmskpd(output_reg, input_reg); |
| 3384 | __ test(output_reg, Immediate(1)); |
| 3385 | DeoptimizeIf(not_zero, instr->environment()); |
| 3386 | } else { |
| 3387 | // If the input is >= -0.5, we return +0. |
| 3388 | __ mov(output_reg, Immediate(0xBF000000)); |
| 3389 | __ movd(xmm_scratch, Operand(output_reg)); |
| 3390 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3391 | __ ucomisd(input_reg, xmm_scratch); |
| 3392 | DeoptimizeIf(below, instr->environment()); |
| 3393 | } |
| 3394 | __ Set(output_reg, Immediate(0)); |
| 3395 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3396 | } |
| 3397 | |
| 3398 | |
| 3399 | void LCodeGen::DoMathSqrt(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3400 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3401 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
| 3402 | __ sqrtsd(input_reg, input_reg); |
| 3403 | } |
| 3404 | |
| 3405 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3406 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3407 | XMMRegister xmm_scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3408 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3409 | Register scratch = ToRegister(instr->temp()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3410 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3411 | |
| 3412 | // Note that according to ECMA-262 15.8.2.13: |
| 3413 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3414 | // Math.sqrt(-Infinity) == NaN |
| 3415 | Label done, sqrt; |
| 3416 | // Check base for -Infinity. According to IEEE-754, single-precision |
| 3417 | // -Infinity has the highest 9 bits set and the lowest 23 bits cleared. |
| 3418 | __ mov(scratch, 0xFF800000); |
| 3419 | __ movd(xmm_scratch, scratch); |
| 3420 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3421 | __ ucomisd(input_reg, xmm_scratch); |
| 3422 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 3423 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 3424 | __ j(not_equal, &sqrt, Label::kNear); |
| 3425 | __ j(carry, &sqrt, Label::kNear); |
| 3426 | // If input is -Infinity, return Infinity. |
| 3427 | __ xorps(input_reg, input_reg); |
| 3428 | __ subsd(input_reg, xmm_scratch); |
| 3429 | __ jmp(&done, Label::kNear); |
| 3430 | |
| 3431 | // Square root. |
| 3432 | __ bind(&sqrt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3433 | __ xorps(xmm_scratch, xmm_scratch); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3434 | __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3435 | __ sqrtsd(input_reg, input_reg); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3436 | __ bind(&done); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3437 | } |
| 3438 | |
| 3439 | |
| 3440 | void LCodeGen::DoPower(LPower* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3441 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3442 | // Having marked this as a call, we can use any registers. |
| 3443 | // Just make sure that the input/output registers are the expected ones. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3444 | ASSERT(!instr->right()->IsDoubleRegister() || |
| 3445 | ToDoubleRegister(instr->right()).is(xmm1)); |
| 3446 | ASSERT(!instr->right()->IsRegister() || |
| 3447 | ToRegister(instr->right()).is(eax)); |
| 3448 | ASSERT(ToDoubleRegister(instr->left()).is(xmm2)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3449 | ASSERT(ToDoubleRegister(instr->result()).is(xmm3)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3450 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3451 | if (exponent_type.IsTagged()) { |
| 3452 | Label no_deopt; |
| 3453 | __ JumpIfSmi(eax, &no_deopt); |
| 3454 | __ CmpObjectType(eax, HEAP_NUMBER_TYPE, ecx); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3455 | DeoptimizeIf(not_equal, instr->environment()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3456 | __ bind(&no_deopt); |
| 3457 | MathPowStub stub(MathPowStub::TAGGED); |
| 3458 | __ CallStub(&stub); |
| 3459 | } else if (exponent_type.IsInteger32()) { |
| 3460 | MathPowStub stub(MathPowStub::INTEGER); |
| 3461 | __ CallStub(&stub); |
| 3462 | } else { |
| 3463 | ASSERT(exponent_type.IsDouble()); |
| 3464 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3465 | __ CallStub(&stub); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3466 | } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3467 | } |
| 3468 | |
| 3469 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3470 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3471 | class DeferredDoRandom: public LDeferredCode { |
| 3472 | public: |
| 3473 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3474 | : LDeferredCode(codegen), instr_(instr) { } |
| 3475 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3476 | virtual LInstruction* instr() { return instr_; } |
| 3477 | private: |
| 3478 | LRandom* instr_; |
| 3479 | }; |
| 3480 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3481 | DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3482 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3483 | // Having marked this instruction as a call we can use any |
| 3484 | // registers. |
| 3485 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3486 | ASSERT(ToRegister(instr->global_object()).is(eax)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3487 | // Assert that the register size is indeed the size of each seed. |
| 3488 | static const int kSeedSize = sizeof(uint32_t); |
| 3489 | STATIC_ASSERT(kPointerSize == kSeedSize); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3490 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3491 | __ mov(eax, FieldOperand(eax, GlobalObject::kNativeContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3492 | static const int kRandomSeedOffset = |
| 3493 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3494 | __ mov(ebx, FieldOperand(eax, kRandomSeedOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3495 | // ebx: FixedArray of the native context's random seeds |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3496 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3497 | // Load state[0]. |
| 3498 | __ mov(ecx, FieldOperand(ebx, ByteArray::kHeaderSize)); |
| 3499 | // If state[0] == 0, call runtime to initialize seeds. |
| 3500 | __ test(ecx, ecx); |
| 3501 | __ j(zero, deferred->entry()); |
| 3502 | // Load state[1]. |
| 3503 | __ mov(eax, FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize)); |
| 3504 | // ecx: state[0] |
| 3505 | // eax: state[1] |
| 3506 | |
| 3507 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3508 | __ movzx_w(edx, ecx); |
| 3509 | __ imul(edx, edx, 18273); |
| 3510 | __ shr(ecx, 16); |
| 3511 | __ add(ecx, edx); |
| 3512 | // Save state[0]. |
| 3513 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize), ecx); |
| 3514 | |
| 3515 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3516 | __ movzx_w(edx, eax); |
| 3517 | __ imul(edx, edx, 36969); |
| 3518 | __ shr(eax, 16); |
| 3519 | __ add(eax, edx); |
| 3520 | // Save state[1]. |
| 3521 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize), eax); |
| 3522 | |
| 3523 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3524 | __ shl(ecx, 14); |
| 3525 | __ and_(eax, Immediate(0x3FFFF)); |
| 3526 | __ add(eax, ecx); |
| 3527 | |
| 3528 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3529 | // Convert 32 random bits in eax to 0.(32 random bits) in a double |
| 3530 | // by computing: |
| 3531 | // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 3532 | __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single. |
| 3533 | __ movd(xmm2, ebx); |
| 3534 | __ movd(xmm1, eax); |
| 3535 | __ cvtss2sd(xmm2, xmm2); |
| 3536 | __ xorps(xmm1, xmm2); |
| 3537 | __ subsd(xmm1, xmm2); |
| 3538 | } |
| 3539 | |
| 3540 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3541 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3542 | __ PrepareCallCFunction(1, ebx); |
| 3543 | __ mov(Operand(esp, 0), eax); |
| 3544 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3545 | // Return value is in eax. |
| 3546 | } |
| 3547 | |
| 3548 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3549 | void LCodeGen::DoMathLog(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3550 | ASSERT(instr->value()->Equals(instr->result())); |
| 3551 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3552 | Label positive, done, zero; |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3553 | __ xorps(xmm0, xmm0); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3554 | __ ucomisd(input_reg, xmm0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3555 | __ j(above, &positive, Label::kNear); |
| 3556 | __ j(equal, &zero, Label::kNear); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 3557 | ExternalReference nan = |
| 3558 | ExternalReference::address_of_canonical_non_hole_nan(); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3559 | __ movdbl(input_reg, Operand::StaticVariable(nan)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3560 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3561 | __ bind(&zero); |
| 3562 | __ push(Immediate(0xFFF00000)); |
| 3563 | __ push(Immediate(0)); |
| 3564 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3565 | __ add(Operand(esp), Immediate(kDoubleSize)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3566 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3567 | __ bind(&positive); |
| 3568 | __ fldln2(); |
| 3569 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 3570 | __ movdbl(Operand(esp, 0), input_reg); |
| 3571 | __ fld_d(Operand(esp, 0)); |
| 3572 | __ fyl2x(); |
| 3573 | __ fstp_d(Operand(esp, 0)); |
| 3574 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3575 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3576 | __ bind(&done); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3577 | } |
| 3578 | |
| 3579 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3580 | void LCodeGen::DoMathTan(LUnaryMathOperation* instr) { |
| 3581 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3582 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3583 | TranscendentalCacheStub::UNTAGGED); |
| 3584 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
| 3585 | } |
| 3586 | |
| 3587 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3588 | void LCodeGen::DoMathCos(LUnaryMathOperation* instr) { |
| 3589 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3590 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3591 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3592 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3593 | } |
| 3594 | |
| 3595 | |
| 3596 | void LCodeGen::DoMathSin(LUnaryMathOperation* instr) { |
| 3597 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3598 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3599 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3600 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3601 | } |
| 3602 | |
| 3603 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3604 | void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) { |
| 3605 | switch (instr->op()) { |
| 3606 | case kMathAbs: |
| 3607 | DoMathAbs(instr); |
| 3608 | break; |
| 3609 | case kMathFloor: |
| 3610 | DoMathFloor(instr); |
| 3611 | break; |
| 3612 | case kMathRound: |
| 3613 | DoMathRound(instr); |
| 3614 | break; |
| 3615 | case kMathSqrt: |
| 3616 | DoMathSqrt(instr); |
| 3617 | break; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3618 | case kMathCos: |
| 3619 | DoMathCos(instr); |
| 3620 | break; |
| 3621 | case kMathSin: |
| 3622 | DoMathSin(instr); |
| 3623 | break; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3624 | case kMathTan: |
| 3625 | DoMathTan(instr); |
| 3626 | break; |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3627 | case kMathLog: |
| 3628 | DoMathLog(instr); |
| 3629 | break; |
| 3630 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3631 | default: |
| 3632 | UNREACHABLE(); |
| 3633 | } |
| 3634 | } |
| 3635 | |
| 3636 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3637 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3638 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3639 | ASSERT(ToRegister(instr->function()).is(edi)); |
| 3640 | ASSERT(instr->HasPointerMap()); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3641 | |
| 3642 | if (instr->known_function().is_null()) { |
| 3643 | LPointerMap* pointers = instr->pointer_map(); |
| 3644 | RecordPosition(pointers->position()); |
| 3645 | SafepointGenerator generator( |
| 3646 | this, pointers, Safepoint::kLazyDeopt); |
| 3647 | ParameterCount count(instr->arity()); |
| 3648 | __ InvokeFunction(edi, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
| 3649 | } else { |
| 3650 | CallKnownFunction(instr->known_function(), |
| 3651 | instr->arity(), |
| 3652 | instr, |
| 3653 | CALL_AS_METHOD, |
| 3654 | EDI_CONTAINS_TARGET); |
| 3655 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3656 | } |
| 3657 | |
| 3658 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3659 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3660 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3661 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3662 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3663 | |
| 3664 | int arity = instr->arity(); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3665 | Handle<Code> ic = |
| 3666 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3667 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3668 | } |
| 3669 | |
| 3670 | |
| 3671 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3672 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3673 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3674 | |
| 3675 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3676 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3677 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3678 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3679 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3680 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3681 | } |
| 3682 | |
| 3683 | |
| 3684 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3685 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3686 | ASSERT(ToRegister(instr->function()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3687 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3688 | |
| 3689 | int arity = instr->arity(); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3690 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3691 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3692 | } |
| 3693 | |
| 3694 | |
| 3695 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3696 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3697 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3698 | |
| 3699 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3700 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 3701 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3702 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3703 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3704 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3705 | } |
| 3706 | |
| 3707 | |
| 3708 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 3709 | ASSERT(ToRegister(instr->result()).is(eax)); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3710 | CallKnownFunction(instr->target(), |
| 3711 | instr->arity(), |
| 3712 | instr, |
| 3713 | CALL_AS_FUNCTION, |
| 3714 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3715 | } |
| 3716 | |
| 3717 | |
| 3718 | void LCodeGen::DoCallNew(LCallNew* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3719 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3720 | ASSERT(ToRegister(instr->constructor()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3721 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3722 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3723 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3724 | __ Set(eax, Immediate(instr->arity())); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3725 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3726 | } |
| 3727 | |
| 3728 | |
| 3729 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3730 | CallRuntime(instr->function(), instr->arity(), instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3731 | } |
| 3732 | |
| 3733 | |
| 3734 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
| 3735 | Register object = ToRegister(instr->object()); |
| 3736 | Register value = ToRegister(instr->value()); |
| 3737 | int offset = instr->offset(); |
| 3738 | |
| 3739 | if (!instr->transition().is_null()) { |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3740 | if (!instr->hydrogen()->NeedsWriteBarrierForMap()) { |
| 3741 | __ mov(FieldOperand(object, HeapObject::kMapOffset), instr->transition()); |
| 3742 | } else { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3743 | Register temp = ToRegister(instr->temp()); |
| 3744 | Register temp_map = ToRegister(instr->temp_map()); |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3745 | __ mov(temp_map, instr->transition()); |
| 3746 | __ mov(FieldOperand(object, HeapObject::kMapOffset), temp_map); |
| 3747 | // Update the write barrier for the map field. |
| 3748 | __ RecordWriteField(object, |
| 3749 | HeapObject::kMapOffset, |
| 3750 | temp_map, |
| 3751 | temp, |
| 3752 | kSaveFPRegs, |
| 3753 | OMIT_REMEMBERED_SET, |
| 3754 | OMIT_SMI_CHECK); |
| 3755 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3756 | } |
| 3757 | |
| 3758 | // Do the store. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3759 | HType type = instr->hydrogen()->value()->type(); |
| 3760 | SmiCheck check_needed = |
| 3761 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3762 | if (instr->is_in_object()) { |
| 3763 | __ mov(FieldOperand(object, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3764 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3765 | Register temp = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3766 | // Update the write barrier for the object for in-object properties. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3767 | __ RecordWriteField(object, |
| 3768 | offset, |
| 3769 | value, |
| 3770 | temp, |
| 3771 | kSaveFPRegs, |
| 3772 | EMIT_REMEMBERED_SET, |
| 3773 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3774 | } |
| 3775 | } else { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3776 | Register temp = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3777 | __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 3778 | __ mov(FieldOperand(temp, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3779 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3780 | // Update the write barrier for the properties array. |
| 3781 | // object is used as a scratch register. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3782 | __ RecordWriteField(temp, |
| 3783 | offset, |
| 3784 | value, |
| 3785 | object, |
| 3786 | kSaveFPRegs, |
| 3787 | EMIT_REMEMBERED_SET, |
| 3788 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3789 | } |
| 3790 | } |
| 3791 | } |
| 3792 | |
| 3793 | |
| 3794 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3795 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3796 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3797 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3798 | |
| 3799 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3800 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3801 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 3802 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3803 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3804 | } |
| 3805 | |
| 3806 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3807 | void LCodeGen::DeoptIfTaggedButNotSmi(LEnvironment* environment, |
| 3808 | HValue* value, |
| 3809 | LOperand* operand) { |
| 3810 | if (value->representation().IsTagged() && !value->type().IsSmi()) { |
| 3811 | if (operand->IsRegister()) { |
| 3812 | __ test(ToRegister(operand), Immediate(kSmiTagMask)); |
| 3813 | } else { |
| 3814 | __ test(ToOperand(operand), Immediate(kSmiTagMask)); |
| 3815 | } |
| 3816 | DeoptimizeIf(not_zero, environment); |
| 3817 | } |
| 3818 | } |
| 3819 | |
| 3820 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3821 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3822 | DeoptIfTaggedButNotSmi(instr->environment(), |
| 3823 | instr->hydrogen()->length(), |
| 3824 | instr->length()); |
| 3825 | DeoptIfTaggedButNotSmi(instr->environment(), |
| 3826 | instr->hydrogen()->index(), |
| 3827 | instr->index()); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3828 | if (instr->index()->IsConstantOperand()) { |
jkummerow@chromium.org | 000f7fb | 2012-08-01 11:14:42 +0000 | [diff] [blame] | 3829 | int constant_index = |
| 3830 | ToInteger32(LConstantOperand::cast(instr->index())); |
| 3831 | if (instr->hydrogen()->length()->representation().IsTagged()) { |
| 3832 | __ cmp(ToOperand(instr->length()), |
| 3833 | Immediate(Smi::FromInt(constant_index))); |
| 3834 | } else { |
| 3835 | __ cmp(ToOperand(instr->length()), Immediate(constant_index)); |
| 3836 | } |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3837 | DeoptimizeIf(below_equal, instr->environment()); |
| 3838 | } else { |
| 3839 | __ cmp(ToRegister(instr->index()), ToOperand(instr->length())); |
| 3840 | DeoptimizeIf(above_equal, instr->environment()); |
| 3841 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3842 | } |
| 3843 | |
| 3844 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3845 | void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3846 | ElementsKind elements_kind = instr->elements_kind(); |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3847 | LOperand* key = instr->key(); |
| 3848 | if (!key->IsConstantOperand() && |
| 3849 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 3850 | elements_kind)) { |
| 3851 | __ SmiUntag(ToRegister(key)); |
| 3852 | } |
| 3853 | Operand operand(BuildFastArrayOperand( |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3854 | instr->elements(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3855 | key, |
| 3856 | instr->hydrogen()->key()->representation(), |
| 3857 | elements_kind, |
| 3858 | 0, |
| 3859 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3860 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3861 | __ cvtsd2ss(xmm0, ToDoubleRegister(instr->value())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3862 | __ movss(operand, xmm0); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3863 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3864 | __ movdbl(operand, ToDoubleRegister(instr->value())); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3865 | } else { |
| 3866 | Register value = ToRegister(instr->value()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3867 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3868 | case EXTERNAL_PIXEL_ELEMENTS: |
| 3869 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3870 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3871 | __ mov_b(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3872 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3873 | case EXTERNAL_SHORT_ELEMENTS: |
| 3874 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3875 | __ mov_w(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3876 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3877 | case EXTERNAL_INT_ELEMENTS: |
| 3878 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3879 | __ mov(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3880 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3881 | case EXTERNAL_FLOAT_ELEMENTS: |
| 3882 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3883 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3884 | case FAST_ELEMENTS: |
| 3885 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3886 | case FAST_HOLEY_SMI_ELEMENTS: |
| 3887 | case FAST_HOLEY_ELEMENTS: |
| 3888 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3889 | case DICTIONARY_ELEMENTS: |
| 3890 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3891 | UNREACHABLE(); |
| 3892 | break; |
| 3893 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3894 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3895 | } |
| 3896 | |
| 3897 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3898 | void LCodeGen::DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr) { |
| 3899 | XMMRegister value = ToDoubleRegister(instr->value()); |
| 3900 | |
| 3901 | if (instr->NeedsCanonicalization()) { |
| 3902 | Label have_value; |
| 3903 | |
| 3904 | __ ucomisd(value, value); |
| 3905 | __ j(parity_odd, &have_value); // NaN. |
| 3906 | |
| 3907 | ExternalReference canonical_nan_reference = |
| 3908 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 3909 | __ movdbl(value, Operand::StaticVariable(canonical_nan_reference)); |
| 3910 | __ bind(&have_value); |
| 3911 | } |
| 3912 | |
| 3913 | Operand double_store_operand = BuildFastArrayOperand( |
| 3914 | instr->elements(), |
| 3915 | instr->key(), |
| 3916 | instr->hydrogen()->key()->representation(), |
| 3917 | FAST_DOUBLE_ELEMENTS, |
| 3918 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 3919 | instr->additional_index()); |
| 3920 | __ movdbl(double_store_operand, value); |
| 3921 | } |
| 3922 | |
| 3923 | |
| 3924 | void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3925 | Register value = ToRegister(instr->value()); |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3926 | Register elements = ToRegister(instr->elements()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3927 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg; |
| 3928 | |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3929 | Operand operand = BuildFastArrayOperand( |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3930 | instr->elements(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3931 | instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3932 | instr->hydrogen()->key()->representation(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3933 | FAST_ELEMENTS, |
| 3934 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 3935 | instr->additional_index()); |
| 3936 | __ mov(operand, value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3937 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3938 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3939 | ASSERT(!instr->key()->IsConstantOperand()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3940 | HType type = instr->hydrogen()->value()->type(); |
| 3941 | SmiCheck check_needed = |
| 3942 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3943 | // Compute address of modified element and store it into key register. |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3944 | __ lea(key, operand); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3945 | __ RecordWrite(elements, |
| 3946 | key, |
| 3947 | value, |
| 3948 | kSaveFPRegs, |
| 3949 | EMIT_REMEMBERED_SET, |
| 3950 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3951 | } |
| 3952 | } |
| 3953 | |
| 3954 | |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 3955 | void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) { |
| 3956 | // By cases...external, fast-double, fast |
| 3957 | if (instr->is_external()) { |
| 3958 | DoStoreKeyedExternalArray(instr); |
| 3959 | } else if (instr->hydrogen()->value()->representation().IsDouble()) { |
| 3960 | DoStoreKeyedFixedDoubleArray(instr); |
| 3961 | } else { |
| 3962 | DoStoreKeyedFixedArray(instr); |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3963 | } |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3964 | } |
| 3965 | |
| 3966 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3967 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3968 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3969 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3970 | ASSERT(ToRegister(instr->key()).is(ecx)); |
| 3971 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3972 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3973 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3974 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 3975 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3976 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3977 | } |
| 3978 | |
| 3979 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3980 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 3981 | Register object_reg = ToRegister(instr->object()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 3982 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3983 | |
| 3984 | Handle<Map> from_map = instr->original_map(); |
| 3985 | Handle<Map> to_map = instr->transitioned_map(); |
| 3986 | ElementsKind from_kind = from_map->elements_kind(); |
| 3987 | ElementsKind to_kind = to_map->elements_kind(); |
| 3988 | |
| 3989 | Label not_applicable; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3990 | bool is_simple_map_transition = |
| 3991 | IsSimpleMapChangeTransition(from_kind, to_kind); |
| 3992 | Label::Distance branch_distance = |
| 3993 | is_simple_map_transition ? Label::kNear : Label::kFar; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3994 | __ cmp(FieldOperand(object_reg, HeapObject::kMapOffset), from_map); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3995 | __ j(not_equal, ¬_applicable, branch_distance); |
| 3996 | if (is_simple_map_transition) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3997 | Register object_reg = ToRegister(instr->object()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3998 | Handle<Map> map = instr->hydrogen()->transitioned_map(); |
| 3999 | __ mov(FieldOperand(object_reg, HeapObject::kMapOffset), |
| 4000 | Immediate(map)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4001 | // Write barrier. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4002 | ASSERT_NE(instr->temp(), NULL); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4003 | __ RecordWriteForMap(object_reg, to_map, new_map_reg, |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4004 | ToRegister(instr->temp()), |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4005 | kDontSaveFPRegs); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4006 | } else if (IsFastSmiElementsKind(from_kind) && |
| 4007 | IsFastDoubleElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4008 | __ mov(new_map_reg, to_map); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4009 | Register fixed_object_reg = ToRegister(instr->temp()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4010 | ASSERT(fixed_object_reg.is(edx)); |
| 4011 | ASSERT(new_map_reg.is(ebx)); |
| 4012 | __ mov(fixed_object_reg, object_reg); |
| 4013 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 4014 | RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4015 | } else if (IsFastDoubleElementsKind(from_kind) && |
| 4016 | IsFastObjectElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4017 | __ mov(new_map_reg, to_map); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4018 | Register fixed_object_reg = ToRegister(instr->temp()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4019 | ASSERT(fixed_object_reg.is(edx)); |
| 4020 | ASSERT(new_map_reg.is(ebx)); |
| 4021 | __ mov(fixed_object_reg, object_reg); |
| 4022 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 4023 | RelocInfo::CODE_TARGET, instr); |
| 4024 | } else { |
| 4025 | UNREACHABLE(); |
| 4026 | } |
| 4027 | __ bind(¬_applicable); |
| 4028 | } |
| 4029 | |
| 4030 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4031 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4032 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 4033 | public: |
| 4034 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 4035 | : LDeferredCode(codegen), instr_(instr) { } |
| 4036 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4037 | virtual LInstruction* instr() { return instr_; } |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4038 | private: |
| 4039 | LStringCharCodeAt* instr_; |
| 4040 | }; |
| 4041 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4042 | DeferredStringCharCodeAt* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4043 | new(zone()) DeferredStringCharCodeAt(this, instr); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4044 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 4045 | StringCharLoadGenerator::Generate(masm(), |
| 4046 | factory(), |
| 4047 | ToRegister(instr->string()), |
| 4048 | ToRegister(instr->index()), |
| 4049 | ToRegister(instr->result()), |
| 4050 | deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4051 | __ bind(deferred->exit()); |
| 4052 | } |
| 4053 | |
| 4054 | |
| 4055 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4056 | Register string = ToRegister(instr->string()); |
| 4057 | Register result = ToRegister(instr->result()); |
| 4058 | |
| 4059 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4060 | // result register contain a valid pointer because it is already |
| 4061 | // contained in the register pointer map. |
| 4062 | __ Set(result, Immediate(0)); |
| 4063 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4064 | PushSafepointRegistersScope scope(this); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4065 | __ push(string); |
| 4066 | // Push the index as a smi. This is safe because of the checks in |
| 4067 | // DoStringCharCodeAt above. |
| 4068 | STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue); |
| 4069 | if (instr->index()->IsConstantOperand()) { |
| 4070 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 4071 | __ push(Immediate(Smi::FromInt(const_index))); |
| 4072 | } else { |
| 4073 | Register index = ToRegister(instr->index()); |
| 4074 | __ SmiTag(index); |
| 4075 | __ push(index); |
| 4076 | } |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4077 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, |
| 4078 | instr, instr->context()); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4079 | __ AssertSmi(eax); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4080 | __ SmiUntag(eax); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4081 | __ StoreToSafepointRegisterSlot(result, eax); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4082 | } |
| 4083 | |
| 4084 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4085 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 4086 | class DeferredStringCharFromCode: public LDeferredCode { |
| 4087 | public: |
| 4088 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 4089 | : LDeferredCode(codegen), instr_(instr) { } |
| 4090 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4091 | virtual LInstruction* instr() { return instr_; } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4092 | private: |
| 4093 | LStringCharFromCode* instr_; |
| 4094 | }; |
| 4095 | |
| 4096 | DeferredStringCharFromCode* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4097 | new(zone()) DeferredStringCharFromCode(this, instr); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4098 | |
| 4099 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 4100 | Register char_code = ToRegister(instr->char_code()); |
| 4101 | Register result = ToRegister(instr->result()); |
| 4102 | ASSERT(!char_code.is(result)); |
| 4103 | |
| 4104 | __ cmp(char_code, String::kMaxAsciiCharCode); |
| 4105 | __ j(above, deferred->entry()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4106 | __ Set(result, Immediate(factory()->single_character_string_cache())); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4107 | __ mov(result, FieldOperand(result, |
| 4108 | char_code, times_pointer_size, |
| 4109 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4110 | __ cmp(result, factory()->undefined_value()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4111 | __ j(equal, deferred->entry()); |
| 4112 | __ bind(deferred->exit()); |
| 4113 | } |
| 4114 | |
| 4115 | |
| 4116 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 4117 | Register char_code = ToRegister(instr->char_code()); |
| 4118 | Register result = ToRegister(instr->result()); |
| 4119 | |
| 4120 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4121 | // result register contain a valid pointer because it is already |
| 4122 | // contained in the register pointer map. |
| 4123 | __ Set(result, Immediate(0)); |
| 4124 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4125 | PushSafepointRegistersScope scope(this); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4126 | __ SmiTag(char_code); |
| 4127 | __ push(char_code); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4128 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4129 | __ StoreToSafepointRegisterSlot(result, eax); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4130 | } |
| 4131 | |
| 4132 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4133 | void LCodeGen::DoStringLength(LStringLength* instr) { |
| 4134 | Register string = ToRegister(instr->string()); |
| 4135 | Register result = ToRegister(instr->result()); |
| 4136 | __ mov(result, FieldOperand(string, String::kLengthOffset)); |
| 4137 | } |
| 4138 | |
| 4139 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4140 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4141 | EmitPushTaggedOperand(instr->left()); |
| 4142 | EmitPushTaggedOperand(instr->right()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4143 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4144 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4145 | } |
| 4146 | |
| 4147 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4148 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4149 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4150 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 4151 | LOperand* output = instr->result(); |
| 4152 | ASSERT(output->IsDoubleRegister()); |
| 4153 | __ cvtsi2sd(ToDoubleRegister(output), ToOperand(input)); |
| 4154 | } |
| 4155 | |
| 4156 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4157 | void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4158 | LOperand* input = instr->value(); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4159 | LOperand* output = instr->result(); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4160 | LOperand* temp = instr->temp(); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4161 | |
| 4162 | __ LoadUint32(ToDoubleRegister(output), |
| 4163 | ToRegister(input), |
| 4164 | ToDoubleRegister(temp)); |
| 4165 | } |
| 4166 | |
| 4167 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4168 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 4169 | class DeferredNumberTagI: public LDeferredCode { |
| 4170 | public: |
| 4171 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 4172 | : LDeferredCode(codegen), instr_(instr) { } |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4173 | virtual void Generate() { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4174 | codegen()->DoDeferredNumberTagI(instr_, instr_->value(), SIGNED_INT32); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4175 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4176 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4177 | private: |
| 4178 | LNumberTagI* instr_; |
| 4179 | }; |
| 4180 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4181 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4182 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4183 | Register reg = ToRegister(input); |
| 4184 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4185 | DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4186 | __ SmiTag(reg); |
| 4187 | __ j(overflow, deferred->entry()); |
| 4188 | __ bind(deferred->exit()); |
| 4189 | } |
| 4190 | |
| 4191 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4192 | void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
| 4193 | class DeferredNumberTagU: public LDeferredCode { |
| 4194 | public: |
| 4195 | DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr) |
| 4196 | : LDeferredCode(codegen), instr_(instr) { } |
| 4197 | virtual void Generate() { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4198 | codegen()->DoDeferredNumberTagI(instr_, instr_->value(), UNSIGNED_INT32); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4199 | } |
| 4200 | virtual LInstruction* instr() { return instr_; } |
| 4201 | private: |
| 4202 | LNumberTagU* instr_; |
| 4203 | }; |
| 4204 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4205 | LOperand* input = instr->value(); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4206 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4207 | Register reg = ToRegister(input); |
| 4208 | |
| 4209 | DeferredNumberTagU* deferred = new(zone()) DeferredNumberTagU(this, instr); |
| 4210 | __ cmp(reg, Immediate(Smi::kMaxValue)); |
| 4211 | __ j(above, deferred->entry()); |
| 4212 | __ SmiTag(reg); |
| 4213 | __ bind(deferred->exit()); |
| 4214 | } |
| 4215 | |
| 4216 | |
| 4217 | void LCodeGen::DoDeferredNumberTagI(LInstruction* instr, |
| 4218 | LOperand* value, |
| 4219 | IntegerSignedness signedness) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4220 | Label slow; |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4221 | Register reg = ToRegister(value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4222 | Register tmp = reg.is(eax) ? ecx : eax; |
| 4223 | |
| 4224 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4225 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4226 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4227 | Label done; |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4228 | |
| 4229 | if (signedness == SIGNED_INT32) { |
| 4230 | // There was overflow, so bits 30 and 31 of the original integer |
| 4231 | // disagree. Try to allocate a heap number in new space and store |
| 4232 | // the value in there. If that fails, call the runtime system. |
| 4233 | __ SmiUntag(reg); |
| 4234 | __ xor_(reg, 0x80000000); |
| 4235 | __ cvtsi2sd(xmm0, Operand(reg)); |
| 4236 | } else { |
| 4237 | __ LoadUint32(xmm0, reg, xmm1); |
| 4238 | } |
| 4239 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4240 | if (FLAG_inline_new) { |
| 4241 | __ AllocateHeapNumber(reg, tmp, no_reg, &slow); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4242 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4243 | } |
| 4244 | |
| 4245 | // Slow case: Call the runtime system to do the number allocation. |
| 4246 | __ bind(&slow); |
| 4247 | |
| 4248 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 4249 | // register is stored, as this register is in the pointer map, but contains an |
| 4250 | // integer value. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4251 | __ StoreToSafepointRegisterSlot(reg, Immediate(0)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4252 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4253 | // the environment's HContext or HInlinedContext value. |
| 4254 | // They only call Runtime::kAllocateHeapNumber. |
| 4255 | // The corresponding HChange instructions are added in a phase that does |
| 4256 | // not have easy access to the local context. |
| 4257 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4258 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
| 4259 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4260 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4261 | if (!reg.is(eax)) __ mov(reg, eax); |
| 4262 | |
| 4263 | // Done. Put the value in xmm0 into the value of the allocated heap |
| 4264 | // number. |
| 4265 | __ bind(&done); |
| 4266 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), xmm0); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4267 | __ StoreToSafepointRegisterSlot(reg, reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4268 | } |
| 4269 | |
| 4270 | |
| 4271 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 4272 | class DeferredNumberTagD: public LDeferredCode { |
| 4273 | public: |
| 4274 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 4275 | : LDeferredCode(codegen), instr_(instr) { } |
| 4276 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4277 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4278 | private: |
| 4279 | LNumberTagD* instr_; |
| 4280 | }; |
| 4281 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4282 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4283 | Register reg = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4284 | Register tmp = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4285 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4286 | DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4287 | if (FLAG_inline_new) { |
| 4288 | __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); |
| 4289 | } else { |
| 4290 | __ jmp(deferred->entry()); |
| 4291 | } |
| 4292 | __ bind(deferred->exit()); |
| 4293 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); |
| 4294 | } |
| 4295 | |
| 4296 | |
| 4297 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 4298 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4299 | // result register contain a valid pointer because it is already |
| 4300 | // contained in the register pointer map. |
| 4301 | Register reg = ToRegister(instr->result()); |
| 4302 | __ Set(reg, Immediate(0)); |
| 4303 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4304 | PushSafepointRegistersScope scope(this); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4305 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4306 | // the environment's HContext or HInlinedContext value. |
| 4307 | // They only call Runtime::kAllocateHeapNumber. |
| 4308 | // The corresponding HChange instructions are added in a phase that does |
| 4309 | // not have easy access to the local context. |
| 4310 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4311 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4312 | RecordSafepointWithRegisters( |
| 4313 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4314 | __ StoreToSafepointRegisterSlot(reg, eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4315 | } |
| 4316 | |
| 4317 | |
| 4318 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4319 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4320 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4321 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
| 4322 | __ SmiTag(ToRegister(input)); |
| 4323 | } |
| 4324 | |
| 4325 | |
| 4326 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4327 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4328 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4329 | if (instr->needs_check()) { |
| 4330 | __ test(ToRegister(input), Immediate(kSmiTagMask)); |
| 4331 | DeoptimizeIf(not_zero, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4332 | } else { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4333 | __ AssertSmi(ToRegister(input)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4334 | } |
| 4335 | __ SmiUntag(ToRegister(input)); |
| 4336 | } |
| 4337 | |
| 4338 | |
| 4339 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4340 | Register temp_reg, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4341 | XMMRegister result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4342 | bool deoptimize_on_undefined, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4343 | bool deoptimize_on_minus_zero, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4344 | LEnvironment* env) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4345 | Label load_smi, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4346 | |
| 4347 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4348 | __ JumpIfSmi(input_reg, &load_smi, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4349 | |
| 4350 | // Heap number map check. |
| 4351 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4352 | factory()->heap_number_map()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4353 | if (deoptimize_on_undefined) { |
| 4354 | DeoptimizeIf(not_equal, env); |
| 4355 | } else { |
| 4356 | Label heap_number; |
| 4357 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4358 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4359 | __ cmp(input_reg, factory()->undefined_value()); |
| 4360 | DeoptimizeIf(not_equal, env); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4361 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4362 | // Convert undefined to NaN. |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4363 | ExternalReference nan = |
| 4364 | ExternalReference::address_of_canonical_non_hole_nan(); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4365 | __ movdbl(result_reg, Operand::StaticVariable(nan)); |
| 4366 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4367 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4368 | __ bind(&heap_number); |
| 4369 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4370 | // Heap number to XMM conversion. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4371 | __ movdbl(result_reg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4372 | if (deoptimize_on_minus_zero) { |
| 4373 | XMMRegister xmm_scratch = xmm0; |
| 4374 | __ xorps(xmm_scratch, xmm_scratch); |
| 4375 | __ ucomisd(result_reg, xmm_scratch); |
| 4376 | __ j(not_zero, &done, Label::kNear); |
| 4377 | __ movmskpd(temp_reg, result_reg); |
| 4378 | __ test_b(temp_reg, 1); |
| 4379 | DeoptimizeIf(not_zero, env); |
| 4380 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4381 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4382 | |
| 4383 | // Smi to XMM conversion |
| 4384 | __ bind(&load_smi); |
| 4385 | __ SmiUntag(input_reg); // Untag smi before converting to float. |
| 4386 | __ cvtsi2sd(result_reg, Operand(input_reg)); |
| 4387 | __ SmiTag(input_reg); // Retag smi. |
| 4388 | __ bind(&done); |
| 4389 | } |
| 4390 | |
| 4391 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4392 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4393 | Label done, heap_number; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4394 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4395 | |
| 4396 | // Heap number map check. |
| 4397 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4398 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4399 | |
| 4400 | if (instr->truncating()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4401 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4402 | // Check for undefined. Undefined is converted to zero for truncating |
| 4403 | // conversions. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4404 | __ cmp(input_reg, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4405 | DeoptimizeIf(not_equal, instr->environment()); |
| 4406 | __ mov(input_reg, 0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4407 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4408 | |
| 4409 | __ bind(&heap_number); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4410 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4411 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4412 | Label convert; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4413 | // Use more powerful conversion when sse3 is available. |
| 4414 | // Load x87 register with heap number. |
| 4415 | __ fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4416 | // Get exponent alone and check for too-big exponent. |
| 4417 | __ mov(input_reg, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 4418 | __ and_(input_reg, HeapNumber::kExponentMask); |
| 4419 | const uint32_t kTooBigExponent = |
| 4420 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4421 | __ cmp(Operand(input_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4422 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4423 | // Pop FPU stack before deoptimizing. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4424 | __ fstp(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4425 | DeoptimizeIf(no_condition, instr->environment()); |
| 4426 | |
| 4427 | // Reserve space for 64 bit answer. |
| 4428 | __ bind(&convert); |
| 4429 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4430 | // Do conversion, which cannot fail because we checked the exponent. |
| 4431 | __ fisttp_d(Operand(esp, 0)); |
| 4432 | __ mov(input_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4433 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4434 | } else { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4435 | XMMRegister xmm_temp = ToDoubleRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4436 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4437 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4438 | __ cmp(input_reg, 0x80000000u); |
| 4439 | __ j(not_equal, &done); |
| 4440 | // Check if the input was 0x8000000 (kMinInt). |
| 4441 | // If no, then we got an overflow and we deoptimize. |
| 4442 | ExternalReference min_int = ExternalReference::address_of_min_int(); |
| 4443 | __ movdbl(xmm_temp, Operand::StaticVariable(min_int)); |
| 4444 | __ ucomisd(xmm_temp, xmm0); |
| 4445 | DeoptimizeIf(not_equal, instr->environment()); |
| 4446 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4447 | } |
| 4448 | } else { |
| 4449 | // Deoptimize if we don't have a heap number. |
| 4450 | DeoptimizeIf(not_equal, instr->environment()); |
| 4451 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4452 | XMMRegister xmm_temp = ToDoubleRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4453 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4454 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4455 | __ cvtsi2sd(xmm_temp, Operand(input_reg)); |
| 4456 | __ ucomisd(xmm0, xmm_temp); |
| 4457 | DeoptimizeIf(not_equal, instr->environment()); |
| 4458 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4459 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4460 | __ test(input_reg, Operand(input_reg)); |
| 4461 | __ j(not_zero, &done); |
| 4462 | __ movmskpd(input_reg, xmm0); |
| 4463 | __ and_(input_reg, 1); |
| 4464 | DeoptimizeIf(not_zero, instr->environment()); |
| 4465 | } |
| 4466 | } |
| 4467 | __ bind(&done); |
| 4468 | } |
| 4469 | |
| 4470 | |
| 4471 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4472 | class DeferredTaggedToI: public LDeferredCode { |
| 4473 | public: |
| 4474 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4475 | : LDeferredCode(codegen), instr_(instr) { } |
| 4476 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 4477 | virtual LInstruction* instr() { return instr_; } |
| 4478 | private: |
| 4479 | LTaggedToI* instr_; |
| 4480 | }; |
| 4481 | |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4482 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4483 | ASSERT(input->IsRegister()); |
| 4484 | ASSERT(input->Equals(instr->result())); |
| 4485 | |
| 4486 | Register input_reg = ToRegister(input); |
| 4487 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4488 | DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4489 | |
| 4490 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4491 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4492 | |
| 4493 | // Smi to int32 conversion |
| 4494 | __ SmiUntag(input_reg); // Untag smi. |
| 4495 | |
| 4496 | __ bind(deferred->exit()); |
| 4497 | } |
| 4498 | |
| 4499 | |
| 4500 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4501 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4502 | ASSERT(input->IsRegister()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4503 | LOperand* temp = instr->temp(); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4504 | ASSERT(temp == NULL || temp->IsRegister()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4505 | LOperand* result = instr->result(); |
| 4506 | ASSERT(result->IsDoubleRegister()); |
| 4507 | |
| 4508 | Register input_reg = ToRegister(input); |
| 4509 | XMMRegister result_reg = ToDoubleRegister(result); |
| 4510 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4511 | bool deoptimize_on_minus_zero = |
| 4512 | instr->hydrogen()->deoptimize_on_minus_zero(); |
| 4513 | Register temp_reg = deoptimize_on_minus_zero ? ToRegister(temp) : no_reg; |
| 4514 | |
| 4515 | EmitNumberUntagD(input_reg, |
| 4516 | temp_reg, |
| 4517 | result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4518 | instr->hydrogen()->deoptimize_on_undefined(), |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4519 | deoptimize_on_minus_zero, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4520 | instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4521 | } |
| 4522 | |
| 4523 | |
| 4524 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4525 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4526 | ASSERT(input->IsDoubleRegister()); |
| 4527 | LOperand* result = instr->result(); |
| 4528 | ASSERT(result->IsRegister()); |
| 4529 | |
| 4530 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4531 | Register result_reg = ToRegister(result); |
| 4532 | |
| 4533 | if (instr->truncating()) { |
| 4534 | // Performs a truncating conversion of a floating point number as used by |
| 4535 | // the JS bitwise operations. |
| 4536 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4537 | __ cmp(result_reg, 0x80000000u); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4538 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4539 | // This will deoptimize if the exponent of the input in out of range. |
| 4540 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4541 | Label convert, done; |
| 4542 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4543 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4544 | __ movdbl(Operand(esp, 0), input_reg); |
| 4545 | // Get exponent alone and check for too-big exponent. |
| 4546 | __ mov(result_reg, Operand(esp, sizeof(int32_t))); |
| 4547 | __ and_(result_reg, HeapNumber::kExponentMask); |
| 4548 | const uint32_t kTooBigExponent = |
| 4549 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4550 | __ cmp(Operand(result_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4551 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4552 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4553 | DeoptimizeIf(no_condition, instr->environment()); |
| 4554 | __ bind(&convert); |
| 4555 | // Do conversion, which cannot fail because we checked the exponent. |
| 4556 | __ fld_d(Operand(esp, 0)); |
| 4557 | __ fisttp_d(Operand(esp, 0)); |
| 4558 | __ mov(result_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4559 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4560 | __ bind(&done); |
| 4561 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4562 | Label done; |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4563 | Register temp_reg = ToRegister(instr->temp()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4564 | XMMRegister xmm_scratch = xmm0; |
| 4565 | |
| 4566 | // If cvttsd2si succeeded, we're done. Otherwise, we attempt |
| 4567 | // manual conversion. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4568 | __ j(not_equal, &done, Label::kNear); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4569 | |
| 4570 | // Get high 32 bits of the input in result_reg and temp_reg. |
| 4571 | __ pshufd(xmm_scratch, input_reg, 1); |
| 4572 | __ movd(Operand(temp_reg), xmm_scratch); |
| 4573 | __ mov(result_reg, temp_reg); |
| 4574 | |
| 4575 | // Prepare negation mask in temp_reg. |
| 4576 | __ sar(temp_reg, kBitsPerInt - 1); |
| 4577 | |
| 4578 | // Extract the exponent from result_reg and subtract adjusted |
| 4579 | // bias from it. The adjustment is selected in a way such that |
| 4580 | // when the difference is zero, the answer is in the low 32 bits |
| 4581 | // of the input, otherwise a shift has to be performed. |
| 4582 | __ shr(result_reg, HeapNumber::kExponentShift); |
| 4583 | __ and_(result_reg, |
| 4584 | HeapNumber::kExponentMask >> HeapNumber::kExponentShift); |
| 4585 | __ sub(Operand(result_reg), |
| 4586 | Immediate(HeapNumber::kExponentBias + |
| 4587 | HeapNumber::kExponentBits + |
| 4588 | HeapNumber::kMantissaBits)); |
| 4589 | // Don't handle big (> kMantissaBits + kExponentBits == 63) or |
| 4590 | // special exponents. |
| 4591 | DeoptimizeIf(greater, instr->environment()); |
| 4592 | |
| 4593 | // Zero out the sign and the exponent in the input (by shifting |
| 4594 | // it to the left) and restore the implicit mantissa bit, |
| 4595 | // i.e. convert the input to unsigned int64 shifted left by |
| 4596 | // kExponentBits. |
| 4597 | ExternalReference minus_zero = ExternalReference::address_of_minus_zero(); |
| 4598 | // Minus zero has the most significant bit set and the other |
| 4599 | // bits cleared. |
| 4600 | __ movdbl(xmm_scratch, Operand::StaticVariable(minus_zero)); |
| 4601 | __ psllq(input_reg, HeapNumber::kExponentBits); |
| 4602 | __ por(input_reg, xmm_scratch); |
| 4603 | |
| 4604 | // Get the amount to shift the input right in xmm_scratch. |
| 4605 | __ neg(result_reg); |
| 4606 | __ movd(xmm_scratch, Operand(result_reg)); |
| 4607 | |
| 4608 | // Shift the input right and extract low 32 bits. |
| 4609 | __ psrlq(input_reg, xmm_scratch); |
| 4610 | __ movd(Operand(result_reg), input_reg); |
| 4611 | |
| 4612 | // Use the prepared mask in temp_reg to negate the result if necessary. |
| 4613 | __ xor_(result_reg, Operand(temp_reg)); |
| 4614 | __ sub(result_reg, Operand(temp_reg)); |
| 4615 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4616 | } |
| 4617 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4618 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4619 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4620 | __ cvtsi2sd(xmm0, Operand(result_reg)); |
| 4621 | __ ucomisd(xmm0, input_reg); |
| 4622 | DeoptimizeIf(not_equal, instr->environment()); |
| 4623 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4624 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4625 | // The integer converted back is equal to the original. We |
| 4626 | // only have to test if we got -0 as an input. |
| 4627 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4628 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4629 | __ movmskpd(result_reg, input_reg); |
| 4630 | // Bit 0 contains the sign of the double in input_reg. |
| 4631 | // If input was positive, we are ok and return 0, otherwise |
| 4632 | // deoptimize. |
| 4633 | __ and_(result_reg, 1); |
| 4634 | DeoptimizeIf(not_zero, instr->environment()); |
| 4635 | } |
| 4636 | __ bind(&done); |
| 4637 | } |
| 4638 | } |
| 4639 | |
| 4640 | |
| 4641 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4642 | LOperand* input = instr->value(); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4643 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4644 | DeoptimizeIf(not_zero, instr->environment()); |
| 4645 | } |
| 4646 | |
| 4647 | |
| 4648 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4649 | LOperand* input = instr->value(); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4650 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4651 | DeoptimizeIf(zero, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4652 | } |
| 4653 | |
| 4654 | |
| 4655 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4656 | Register input = ToRegister(instr->value()); |
| 4657 | Register temp = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4658 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4659 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4660 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4661 | if (instr->hydrogen()->is_interval_check()) { |
| 4662 | InstanceType first; |
| 4663 | InstanceType last; |
| 4664 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4665 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4666 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4667 | static_cast<int8_t>(first)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4668 | |
| 4669 | // If there is only one type in the interval check for equality. |
| 4670 | if (first == last) { |
| 4671 | DeoptimizeIf(not_equal, instr->environment()); |
| 4672 | } else { |
| 4673 | DeoptimizeIf(below, instr->environment()); |
| 4674 | // Omit check for the last type. |
| 4675 | if (last != LAST_TYPE) { |
| 4676 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4677 | static_cast<int8_t>(last)); |
| 4678 | DeoptimizeIf(above, instr->environment()); |
| 4679 | } |
| 4680 | } |
| 4681 | } else { |
| 4682 | uint8_t mask; |
| 4683 | uint8_t tag; |
| 4684 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4685 | |
| 4686 | if (IsPowerOf2(mask)) { |
| 4687 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 4688 | __ test_b(FieldOperand(temp, Map::kInstanceTypeOffset), mask); |
| 4689 | DeoptimizeIf(tag == 0 ? not_zero : zero, instr->environment()); |
| 4690 | } else { |
| 4691 | __ movzx_b(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 4692 | __ and_(temp, mask); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 4693 | __ cmp(temp, tag); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4694 | DeoptimizeIf(not_equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4695 | } |
| 4696 | } |
| 4697 | } |
| 4698 | |
| 4699 | |
| 4700 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4701 | Handle<JSFunction> target = instr->hydrogen()->target(); |
| 4702 | if (isolate()->heap()->InNewSpace(*target)) { |
| 4703 | Register reg = ToRegister(instr->value()); |
| 4704 | Handle<JSGlobalPropertyCell> cell = |
| 4705 | isolate()->factory()->NewJSGlobalPropertyCell(target); |
| 4706 | __ cmp(reg, Operand::Cell(cell)); |
| 4707 | } else { |
| 4708 | Operand operand = ToOperand(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4709 | __ cmp(operand, target); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4710 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4711 | DeoptimizeIf(not_equal, instr->environment()); |
| 4712 | } |
| 4713 | |
| 4714 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4715 | void LCodeGen::DoCheckMapCommon(Register reg, |
| 4716 | Handle<Map> map, |
| 4717 | CompareMapMode mode, |
| 4718 | LEnvironment* env) { |
| 4719 | Label success; |
| 4720 | __ CompareMap(reg, map, &success, mode); |
| 4721 | DeoptimizeIf(not_equal, env); |
| 4722 | __ bind(&success); |
| 4723 | } |
| 4724 | |
| 4725 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4726 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4727 | LOperand* input = instr->value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4728 | ASSERT(input->IsRegister()); |
| 4729 | Register reg = ToRegister(input); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4730 | |
| 4731 | Label success; |
| 4732 | SmallMapList* map_set = instr->hydrogen()->map_set(); |
| 4733 | for (int i = 0; i < map_set->length() - 1; i++) { |
| 4734 | Handle<Map> map = map_set->at(i); |
| 4735 | __ CompareMap(reg, map, &success, REQUIRE_EXACT_MAP); |
| 4736 | __ j(equal, &success); |
| 4737 | } |
| 4738 | Handle<Map> map = map_set->last(); |
| 4739 | DoCheckMapCommon(reg, map, REQUIRE_EXACT_MAP, instr->environment()); |
| 4740 | __ bind(&success); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4741 | } |
| 4742 | |
| 4743 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4744 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 4745 | XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 4746 | Register result_reg = ToRegister(instr->result()); |
| 4747 | __ ClampDoubleToUint8(value_reg, xmm0, result_reg); |
| 4748 | } |
| 4749 | |
| 4750 | |
| 4751 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 4752 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4753 | Register value_reg = ToRegister(instr->result()); |
| 4754 | __ ClampUint8(value_reg); |
| 4755 | } |
| 4756 | |
| 4757 | |
| 4758 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 4759 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4760 | Register input_reg = ToRegister(instr->unclamped()); |
| 4761 | Label is_smi, done, heap_number; |
| 4762 | |
| 4763 | __ JumpIfSmi(input_reg, &is_smi); |
| 4764 | |
| 4765 | // Check for heap number |
| 4766 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4767 | factory()->heap_number_map()); |
| 4768 | __ j(equal, &heap_number, Label::kNear); |
| 4769 | |
| 4770 | // Check for undefined. Undefined is converted to zero for clamping |
| 4771 | // conversions. |
| 4772 | __ cmp(input_reg, factory()->undefined_value()); |
| 4773 | DeoptimizeIf(not_equal, instr->environment()); |
| 4774 | __ mov(input_reg, 0); |
| 4775 | __ jmp(&done, Label::kNear); |
| 4776 | |
| 4777 | // Heap number |
| 4778 | __ bind(&heap_number); |
| 4779 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4780 | __ ClampDoubleToUint8(xmm0, xmm1, input_reg); |
| 4781 | __ jmp(&done, Label::kNear); |
| 4782 | |
| 4783 | // smi |
| 4784 | __ bind(&is_smi); |
| 4785 | __ SmiUntag(input_reg); |
| 4786 | __ ClampUint8(input_reg); |
| 4787 | |
| 4788 | __ bind(&done); |
| 4789 | } |
| 4790 | |
| 4791 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4792 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
verwaest@chromium.org | e4ee6de | 2012-11-06 12:13:00 +0000 | [diff] [blame^] | 4793 | ASSERT(instr->temp()->Equals(instr->result())); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4794 | Register reg = ToRegister(instr->temp()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4795 | |
| 4796 | Handle<JSObject> holder = instr->holder(); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4797 | Handle<JSObject> current_prototype = instr->prototype(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4798 | |
| 4799 | // Load prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4800 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4801 | |
| 4802 | // Check prototype maps up to the holder. |
| 4803 | while (!current_prototype.is_identical_to(holder)) { |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4804 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4805 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
| 4806 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4807 | current_prototype = |
| 4808 | Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype())); |
| 4809 | // Load next prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4810 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4811 | } |
| 4812 | |
| 4813 | // Check the holder map. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4814 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4815 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4816 | } |
| 4817 | |
| 4818 | |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4819 | void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
| 4820 | class DeferredAllocateObject: public LDeferredCode { |
| 4821 | public: |
| 4822 | DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
| 4823 | : LDeferredCode(codegen), instr_(instr) { } |
| 4824 | virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
| 4825 | virtual LInstruction* instr() { return instr_; } |
| 4826 | private: |
| 4827 | LAllocateObject* instr_; |
| 4828 | }; |
| 4829 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4830 | DeferredAllocateObject* deferred = |
| 4831 | new(zone()) DeferredAllocateObject(this, instr); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4832 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4833 | Register result = ToRegister(instr->result()); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4834 | Register scratch = ToRegister(instr->temp()); |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4835 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
| 4836 | Handle<Map> initial_map(constructor->initial_map()); |
| 4837 | int instance_size = initial_map->instance_size(); |
| 4838 | ASSERT(initial_map->pre_allocated_property_fields() + |
| 4839 | initial_map->unused_property_fields() - |
| 4840 | initial_map->inobject_properties() == 0); |
| 4841 | |
| 4842 | // Allocate memory for the object. The initial map might change when |
| 4843 | // the constructor's prototype changes, but instance size and property |
| 4844 | // counts remain unchanged (if slack tracking finished). |
| 4845 | ASSERT(!constructor->shared()->IsInobjectSlackTrackingInProgress()); |
| 4846 | __ AllocateInNewSpace(instance_size, |
| 4847 | result, |
| 4848 | no_reg, |
| 4849 | scratch, |
| 4850 | deferred->entry(), |
| 4851 | TAG_OBJECT); |
| 4852 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4853 | __ bind(deferred->exit()); |
| 4854 | if (FLAG_debug_code) { |
| 4855 | Label is_in_new_space; |
| 4856 | __ JumpIfInNewSpace(result, scratch, &is_in_new_space); |
| 4857 | __ Abort("Allocated object is not in new-space"); |
| 4858 | __ bind(&is_in_new_space); |
| 4859 | } |
| 4860 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4861 | // Load the initial map. |
| 4862 | Register map = scratch; |
| 4863 | __ LoadHeapObject(scratch, constructor); |
| 4864 | __ mov(map, FieldOperand(scratch, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4865 | |
| 4866 | if (FLAG_debug_code) { |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 4867 | __ AssertNotSmi(map); |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4868 | __ cmpb(FieldOperand(map, Map::kInstanceSizeOffset), |
| 4869 | instance_size >> kPointerSizeLog2); |
| 4870 | __ Assert(equal, "Unexpected instance size"); |
| 4871 | __ cmpb(FieldOperand(map, Map::kPreAllocatedPropertyFieldsOffset), |
| 4872 | initial_map->pre_allocated_property_fields()); |
| 4873 | __ Assert(equal, "Unexpected pre-allocated property fields count"); |
| 4874 | __ cmpb(FieldOperand(map, Map::kUnusedPropertyFieldsOffset), |
| 4875 | initial_map->unused_property_fields()); |
| 4876 | __ Assert(equal, "Unexpected unused property fields count"); |
| 4877 | __ cmpb(FieldOperand(map, Map::kInObjectPropertiesOffset), |
| 4878 | initial_map->inobject_properties()); |
| 4879 | __ Assert(equal, "Unexpected in-object property fields count"); |
| 4880 | } |
| 4881 | |
| 4882 | // Initialize map and fields of the newly allocated object. |
| 4883 | ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE); |
| 4884 | __ mov(FieldOperand(result, JSObject::kMapOffset), map); |
| 4885 | __ mov(scratch, factory()->empty_fixed_array()); |
| 4886 | __ mov(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 4887 | __ mov(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 4888 | if (initial_map->inobject_properties() != 0) { |
| 4889 | __ mov(scratch, factory()->undefined_value()); |
| 4890 | for (int i = 0; i < initial_map->inobject_properties(); i++) { |
| 4891 | int property_offset = JSObject::kHeaderSize + i * kPointerSize; |
| 4892 | __ mov(FieldOperand(result, property_offset), scratch); |
| 4893 | } |
| 4894 | } |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4895 | } |
| 4896 | |
| 4897 | |
| 4898 | void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) { |
| 4899 | Register result = ToRegister(instr->result()); |
| 4900 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4901 | Handle<Map> initial_map(constructor->initial_map()); |
| 4902 | int instance_size = initial_map->instance_size(); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4903 | |
| 4904 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4905 | // result register contain a valid pointer because it is already |
| 4906 | // contained in the register pointer map. |
| 4907 | __ Set(result, Immediate(0)); |
| 4908 | |
| 4909 | PushSafepointRegistersScope scope(this); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4910 | __ push(Immediate(Smi::FromInt(instance_size))); |
| 4911 | CallRuntimeFromDeferred( |
| 4912 | Runtime::kAllocateInNewSpace, 1, instr, instr->context()); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4913 | __ StoreToSafepointRegisterSlot(result, eax); |
| 4914 | } |
| 4915 | |
| 4916 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4917 | void LCodeGen::DoArrayLiteral(LArrayLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4918 | ASSERT(ToRegister(instr->context()).is(esi)); |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4919 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4920 | ElementsKind boilerplate_elements_kind = |
| 4921 | instr->hydrogen()->boilerplate_elements_kind(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4922 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4923 | // Deopt if the array literal boilerplate ElementsKind is of a type different |
| 4924 | // than the expected one. The check isn't necessary if the boilerplate has |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 4925 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 4926 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 4927 | boilerplate_elements_kind, true)) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4928 | __ LoadHeapObject(eax, instr->hydrogen()->boilerplate_object()); |
| 4929 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 4930 | // Load the map's "bit field 2". We only need the first byte, |
| 4931 | // but the following masking takes care of that anyway. |
| 4932 | __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset)); |
| 4933 | // Retrieve elements_kind from bit field 2. |
| 4934 | __ and_(ebx, Map::kElementsKindMask); |
| 4935 | __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 4936 | DeoptimizeIf(not_equal, instr->environment()); |
| 4937 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4938 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4939 | // Set up the parameters to the stub/runtime call. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4940 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4941 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4942 | // Boilerplate already exists, constant elements are never accessed. |
| 4943 | // Pass an empty fixed array. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4944 | __ push(Immediate(isolate()->factory()->empty_fixed_array())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4945 | |
| 4946 | // Pick the right runtime function or stub to call. |
| 4947 | int length = instr->hydrogen()->length(); |
| 4948 | if (instr->hydrogen()->IsCopyOnWrite()) { |
| 4949 | ASSERT(instr->hydrogen()->depth() == 1); |
| 4950 | FastCloneShallowArrayStub::Mode mode = |
| 4951 | FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS; |
| 4952 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4953 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4954 | } else if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4955 | CallRuntime(Runtime::kCreateArrayLiteral, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4956 | } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4957 | CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4958 | } else { |
| 4959 | FastCloneShallowArrayStub::Mode mode = |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4960 | boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS |
| 4961 | ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS |
| 4962 | : FastCloneShallowArrayStub::CLONE_ELEMENTS; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4963 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4964 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4965 | } |
| 4966 | } |
| 4967 | |
| 4968 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4969 | void LCodeGen::EmitDeepCopy(Handle<JSObject> object, |
| 4970 | Register result, |
| 4971 | Register source, |
| 4972 | int* offset) { |
| 4973 | ASSERT(!source.is(ecx)); |
| 4974 | ASSERT(!result.is(ecx)); |
| 4975 | |
| 4976 | if (FLAG_debug_code) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4977 | __ LoadHeapObject(ecx, object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4978 | __ cmp(source, ecx); |
| 4979 | __ Assert(equal, "Unexpected object literal boilerplate"); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 4980 | __ mov(ecx, FieldOperand(source, HeapObject::kMapOffset)); |
| 4981 | __ cmp(ecx, Handle<Map>(object->map())); |
| 4982 | __ Assert(equal, "Unexpected boilerplate map"); |
| 4983 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 4984 | __ and_(ecx, Map::kElementsKindMask); |
| 4985 | __ cmp(ecx, object->GetElementsKind() << Map::kElementsKindShift); |
| 4986 | __ Assert(equal, "Unexpected boilerplate elements kind"); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4987 | } |
| 4988 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4989 | // Only elements backing stores for non-COW arrays need to be copied. |
| 4990 | Handle<FixedArrayBase> elements(object->elements()); |
| 4991 | bool has_elements = elements->length() > 0 && |
| 4992 | elements->map() != isolate()->heap()->fixed_cow_array_map(); |
| 4993 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4994 | // Increase the offset so that subsequent objects end up right after |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4995 | // this object and its backing store. |
| 4996 | int object_offset = *offset; |
| 4997 | int object_size = object->map()->instance_size(); |
| 4998 | int elements_offset = *offset + object_size; |
| 4999 | int elements_size = has_elements ? elements->Size() : 0; |
| 5000 | *offset += object_size + elements_size; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5001 | |
| 5002 | // Copy object header. |
| 5003 | ASSERT(object->properties()->length() == 0); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5004 | int inobject_properties = object->map()->inobject_properties(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5005 | int header_size = object_size - inobject_properties * kPointerSize; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5006 | for (int i = 0; i < header_size; i += kPointerSize) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5007 | if (has_elements && i == JSObject::kElementsOffset) { |
| 5008 | __ lea(ecx, Operand(result, elements_offset)); |
| 5009 | } else { |
| 5010 | __ mov(ecx, FieldOperand(source, i)); |
| 5011 | } |
| 5012 | __ mov(FieldOperand(result, object_offset + i), ecx); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5013 | } |
| 5014 | |
| 5015 | // Copy in-object properties. |
| 5016 | for (int i = 0; i < inobject_properties; i++) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5017 | int total_offset = object_offset + object->GetInObjectPropertyOffset(i); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5018 | Handle<Object> value = Handle<Object>(object->InObjectPropertyAt(i)); |
| 5019 | if (value->IsJSObject()) { |
| 5020 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 5021 | __ lea(ecx, Operand(result, *offset)); |
| 5022 | __ mov(FieldOperand(result, total_offset), ecx); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5023 | __ LoadHeapObject(source, value_object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5024 | EmitDeepCopy(value_object, result, source, offset); |
| 5025 | } else if (value->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5026 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5027 | __ mov(FieldOperand(result, total_offset), ecx); |
| 5028 | } else { |
| 5029 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 5030 | } |
| 5031 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5032 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5033 | if (has_elements) { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5034 | // Copy elements backing store header. |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5035 | __ LoadHeapObject(source, elements); |
| 5036 | for (int i = 0; i < FixedArray::kHeaderSize; i += kPointerSize) { |
| 5037 | __ mov(ecx, FieldOperand(source, i)); |
| 5038 | __ mov(FieldOperand(result, elements_offset + i), ecx); |
| 5039 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5040 | |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5041 | // Copy elements backing store content. |
| 5042 | int elements_length = elements->length(); |
| 5043 | if (elements->IsFixedDoubleArray()) { |
| 5044 | Handle<FixedDoubleArray> double_array = |
| 5045 | Handle<FixedDoubleArray>::cast(elements); |
| 5046 | for (int i = 0; i < elements_length; i++) { |
| 5047 | int64_t value = double_array->get_representation(i); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 5048 | int32_t value_low = static_cast<int32_t>(value & 0xFFFFFFFF); |
| 5049 | int32_t value_high = static_cast<int32_t>(value >> 32); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5050 | int total_offset = |
| 5051 | elements_offset + FixedDoubleArray::OffsetOfElementAt(i); |
| 5052 | __ mov(FieldOperand(result, total_offset), Immediate(value_low)); |
| 5053 | __ mov(FieldOperand(result, total_offset + 4), Immediate(value_high)); |
| 5054 | } |
| 5055 | } else if (elements->IsFixedArray()) { |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 5056 | Handle<FixedArray> fast_elements = Handle<FixedArray>::cast(elements); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5057 | for (int i = 0; i < elements_length; i++) { |
| 5058 | int total_offset = elements_offset + FixedArray::OffsetOfElementAt(i); |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 5059 | Handle<Object> value(fast_elements->get(i)); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5060 | if (value->IsJSObject()) { |
| 5061 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 5062 | __ lea(ecx, Operand(result, *offset)); |
| 5063 | __ mov(FieldOperand(result, total_offset), ecx); |
| 5064 | __ LoadHeapObject(source, value_object); |
| 5065 | EmitDeepCopy(value_object, result, source, offset); |
| 5066 | } else if (value->IsHeapObject()) { |
| 5067 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
| 5068 | __ mov(FieldOperand(result, total_offset), ecx); |
| 5069 | } else { |
| 5070 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 5071 | } |
| 5072 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5073 | } else { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5074 | UNREACHABLE(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5075 | } |
| 5076 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5077 | } |
| 5078 | |
| 5079 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5080 | void LCodeGen::DoFastLiteral(LFastLiteral* instr) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5081 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 5082 | int size = instr->hydrogen()->total_size(); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 5083 | ElementsKind boilerplate_elements_kind = |
| 5084 | instr->hydrogen()->boilerplate()->GetElementsKind(); |
| 5085 | |
| 5086 | // Deopt if the literal boilerplate ElementsKind is of a type different than |
| 5087 | // the expected one. The check isn't necessary if the boilerplate has already |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 5088 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 5089 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 5090 | boilerplate_elements_kind, true)) { |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 5091 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
| 5092 | __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset)); |
| 5093 | // Load the map's "bit field 2". We only need the first byte, |
| 5094 | // but the following masking takes care of that anyway. |
| 5095 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 5096 | // Retrieve elements_kind from bit field 2. |
| 5097 | __ and_(ecx, Map::kElementsKindMask); |
| 5098 | __ cmp(ecx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 5099 | DeoptimizeIf(not_equal, instr->environment()); |
| 5100 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5101 | |
| 5102 | // Allocate all objects that are part of the literal in one big |
| 5103 | // allocation. This avoids multiple limit checks. |
| 5104 | Label allocated, runtime_allocate; |
| 5105 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 5106 | __ jmp(&allocated); |
| 5107 | |
| 5108 | __ bind(&runtime_allocate); |
| 5109 | __ push(Immediate(Smi::FromInt(size))); |
| 5110 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 5111 | |
| 5112 | __ bind(&allocated); |
| 5113 | int offset = 0; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5114 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5115 | EmitDeepCopy(instr->hydrogen()->boilerplate(), eax, ebx, &offset); |
| 5116 | ASSERT_EQ(size, offset); |
| 5117 | } |
| 5118 | |
| 5119 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5120 | void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 5121 | ASSERT(ToRegister(instr->context()).is(esi)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 5122 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5123 | Handle<FixedArray> constant_properties = |
| 5124 | instr->hydrogen()->constant_properties(); |
| 5125 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5126 | // Set up the parameters to the stub/runtime call. |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 5127 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5128 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5129 | __ push(Immediate(constant_properties)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5130 | int flags = instr->hydrogen()->fast_elements() |
| 5131 | ? ObjectLiteral::kFastElements |
| 5132 | : ObjectLiteral::kNoFlags; |
| 5133 | flags |= instr->hydrogen()->has_function() |
| 5134 | ? ObjectLiteral::kHasFunction |
| 5135 | : ObjectLiteral::kNoFlags; |
| 5136 | __ push(Immediate(Smi::FromInt(flags))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5137 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5138 | // Pick the right runtime function or stub to call. |
| 5139 | int properties_count = constant_properties->length() / 2; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5140 | if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5141 | CallRuntime(Runtime::kCreateObjectLiteral, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5142 | } else if (flags != ObjectLiteral::kFastElements || |
| 5143 | properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5144 | CallRuntime(Runtime::kCreateObjectLiteralShallow, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5145 | } else { |
| 5146 | FastCloneShallowObjectStub stub(properties_count); |
| 5147 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5148 | } |
| 5149 | } |
| 5150 | |
| 5151 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5152 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 5153 | ASSERT(ToRegister(instr->value()).is(eax)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5154 | __ push(eax); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5155 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5156 | } |
| 5157 | |
| 5158 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5159 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5160 | ASSERT(ToRegister(instr->context()).is(esi)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5161 | Label materialized; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5162 | // Registers will be used as follows: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5163 | // ecx = literals array. |
| 5164 | // ebx = regexp literal. |
| 5165 | // eax = regexp literal clone. |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5166 | // esi = context. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 5167 | int literal_offset = |
| 5168 | FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index()); |
| 5169 | __ LoadHeapObject(ecx, instr->hydrogen()->literals()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5170 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5171 | __ cmp(ebx, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5172 | __ j(not_equal, &materialized, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5173 | |
| 5174 | // Create regexp literal using runtime function |
| 5175 | // Result will be in eax. |
| 5176 | __ push(ecx); |
| 5177 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 5178 | __ push(Immediate(instr->hydrogen()->pattern())); |
| 5179 | __ push(Immediate(instr->hydrogen()->flags())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5180 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5181 | __ mov(ebx, eax); |
| 5182 | |
| 5183 | __ bind(&materialized); |
| 5184 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 5185 | Label allocated, runtime_allocate; |
| 5186 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 5187 | __ jmp(&allocated); |
| 5188 | |
| 5189 | __ bind(&runtime_allocate); |
| 5190 | __ push(ebx); |
| 5191 | __ push(Immediate(Smi::FromInt(size))); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5192 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5193 | __ pop(ebx); |
| 5194 | |
| 5195 | __ bind(&allocated); |
| 5196 | // Copy the content into the newly allocated memory. |
| 5197 | // (Unroll copy loop once for better throughput). |
| 5198 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 5199 | __ mov(edx, FieldOperand(ebx, i)); |
| 5200 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 5201 | __ mov(FieldOperand(eax, i), edx); |
| 5202 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 5203 | } |
| 5204 | if ((size % (2 * kPointerSize)) != 0) { |
| 5205 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 5206 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 5207 | } |
| 5208 | } |
| 5209 | |
| 5210 | |
| 5211 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5212 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5213 | // Use the fast case closure allocation code that allocates in new |
| 5214 | // space for nested functions that don't need literals cloning. |
| 5215 | Handle<SharedFunctionInfo> shared_info = instr->shared_info(); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 5216 | bool pretenure = instr->hydrogen()->pretenure(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5217 | if (!pretenure && shared_info->num_literals() == 0) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5218 | FastNewClosureStub stub(shared_info->language_mode()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5219 | __ push(Immediate(shared_info)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5220 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5221 | } else { |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5222 | __ push(esi); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5223 | __ push(Immediate(shared_info)); |
| 5224 | __ push(Immediate(pretenure |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5225 | ? factory()->true_value() |
| 5226 | : factory()->false_value())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5227 | CallRuntime(Runtime::kNewClosure, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5228 | } |
| 5229 | } |
| 5230 | |
| 5231 | |
| 5232 | void LCodeGen::DoTypeof(LTypeof* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 5233 | LOperand* input = instr->value(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5234 | EmitPushTaggedOperand(input); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5235 | CallRuntime(Runtime::kTypeof, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5236 | } |
| 5237 | |
| 5238 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5239 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 5240 | Register input = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5241 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5242 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5243 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 5244 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 5245 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 5246 | Condition final_branch_condition = |
| 5247 | EmitTypeofIs(true_label, false_label, input, instr->type_literal()); |
| 5248 | if (final_branch_condition != no_condition) { |
| 5249 | EmitBranch(true_block, false_block, final_branch_condition); |
| 5250 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5251 | } |
| 5252 | |
| 5253 | |
| 5254 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 5255 | Label* false_label, |
| 5256 | Register input, |
| 5257 | Handle<String> type_name) { |
| 5258 | Condition final_branch_condition = no_condition; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5259 | if (type_name->Equals(heap()->number_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5260 | __ JumpIfSmi(input, true_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5261 | __ cmp(FieldOperand(input, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5262 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5263 | final_branch_condition = equal; |
| 5264 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5265 | } else if (type_name->Equals(heap()->string_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5266 | __ JumpIfSmi(input, false_label); |
| 5267 | __ CmpObjectType(input, FIRST_NONSTRING_TYPE, input); |
| 5268 | __ j(above_equal, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5269 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5270 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5271 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5272 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5273 | } else if (type_name->Equals(heap()->boolean_symbol())) { |
| 5274 | __ cmp(input, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5275 | __ j(equal, true_label); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5276 | __ cmp(input, factory()->false_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5277 | final_branch_condition = equal; |
| 5278 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 5279 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_symbol())) { |
| 5280 | __ cmp(input, factory()->null_value()); |
| 5281 | final_branch_condition = equal; |
| 5282 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5283 | } else if (type_name->Equals(heap()->undefined_symbol())) { |
| 5284 | __ cmp(input, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5285 | __ j(equal, true_label); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5286 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5287 | // Check for undetectable objects => true. |
| 5288 | __ mov(input, FieldOperand(input, HeapObject::kMapOffset)); |
| 5289 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5290 | 1 << Map::kIsUndetectable); |
| 5291 | final_branch_condition = not_zero; |
| 5292 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5293 | } else if (type_name->Equals(heap()->function_symbol())) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5294 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5295 | __ JumpIfSmi(input, false_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5296 | __ CmpObjectType(input, JS_FUNCTION_TYPE, input); |
| 5297 | __ j(equal, true_label); |
| 5298 | __ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE); |
| 5299 | final_branch_condition = equal; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5300 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5301 | } else if (type_name->Equals(heap()->object_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5302 | __ JumpIfSmi(input, false_label); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 5303 | if (!FLAG_harmony_typeof) { |
| 5304 | __ cmp(input, factory()->null_value()); |
| 5305 | __ j(equal, true_label); |
| 5306 | } |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 5307 | __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5308 | __ j(below, false_label); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 5309 | __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
| 5310 | __ j(above, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5311 | // Check for undetectable objects => false. |
| 5312 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5313 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5314 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5315 | |
| 5316 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5317 | __ jmp(false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5318 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5319 | return final_branch_condition; |
| 5320 | } |
| 5321 | |
| 5322 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5323 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 5324 | Register temp = ToRegister(instr->temp()); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5325 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5326 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5327 | |
| 5328 | EmitIsConstructCall(temp); |
| 5329 | EmitBranch(true_block, false_block, equal); |
| 5330 | } |
| 5331 | |
| 5332 | |
| 5333 | void LCodeGen::EmitIsConstructCall(Register temp) { |
| 5334 | // Get the frame pointer for the calling frame. |
| 5335 | __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 5336 | |
| 5337 | // Skip the arguments adaptor frame if it exists. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5338 | Label check_frame_marker; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5339 | __ cmp(Operand(temp, StandardFrameConstants::kContextOffset), |
| 5340 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5341 | __ j(not_equal, &check_frame_marker, Label::kNear); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5342 | __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset)); |
| 5343 | |
| 5344 | // Check the marker in the calling frame. |
| 5345 | __ bind(&check_frame_marker); |
| 5346 | __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset), |
| 5347 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5348 | } |
| 5349 | |
| 5350 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5351 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
| 5352 | // Ensure that we have enough space after the previous lazy-bailout |
| 5353 | // instruction for patching the code here. |
| 5354 | int current_pc = masm()->pc_offset(); |
| 5355 | int patch_size = Deoptimizer::patch_size(); |
| 5356 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 5357 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5358 | __ Nop(padding_size); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5359 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5360 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5361 | } |
| 5362 | |
| 5363 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5364 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5365 | EnsureSpaceForLazyDeopt(); |
| 5366 | ASSERT(instr->HasEnvironment()); |
| 5367 | LEnvironment* env = instr->environment(); |
| 5368 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5369 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5370 | } |
| 5371 | |
| 5372 | |
| 5373 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
| 5374 | DeoptimizeIf(no_condition, instr->environment()); |
| 5375 | } |
| 5376 | |
| 5377 | |
| 5378 | void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) { |
| 5379 | LOperand* obj = instr->object(); |
| 5380 | LOperand* key = instr->key(); |
| 5381 | __ push(ToOperand(obj)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5382 | EmitPushTaggedOperand(key); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5383 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5384 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5385 | RecordPosition(pointers->position()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5386 | // Create safepoint generator that will also ensure enough space in the |
| 5387 | // reloc info for patching in deoptimization (since this is invoking a |
| 5388 | // builtin) |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5389 | SafepointGenerator safepoint_generator( |
| 5390 | this, pointers, Safepoint::kLazyDeopt); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5391 | __ push(Immediate(Smi::FromInt(strict_mode_flag()))); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5392 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5393 | } |
| 5394 | |
| 5395 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5396 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5397 | PushSafepointRegistersScope scope(this); |
| 5398 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 5399 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5400 | RecordSafepointWithLazyDeopt( |
| 5401 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 5402 | ASSERT(instr->HasEnvironment()); |
| 5403 | LEnvironment* env = instr->environment(); |
| 5404 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5405 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5406 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5407 | |
| 5408 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 5409 | class DeferredStackCheck: public LDeferredCode { |
| 5410 | public: |
| 5411 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5412 | : LDeferredCode(codegen), instr_(instr) { } |
| 5413 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5414 | virtual LInstruction* instr() { return instr_; } |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5415 | private: |
| 5416 | LStackCheck* instr_; |
| 5417 | }; |
| 5418 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5419 | ASSERT(instr->HasEnvironment()); |
| 5420 | LEnvironment* env = instr->environment(); |
| 5421 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5422 | // prepare for lazy deoptimization explicitly here. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5423 | if (instr->hydrogen()->is_function_entry()) { |
| 5424 | // Perform stack overflow check. |
| 5425 | Label done; |
| 5426 | ExternalReference stack_limit = |
| 5427 | ExternalReference::address_of_stack_limit(isolate()); |
| 5428 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5429 | __ j(above_equal, &done, Label::kNear); |
| 5430 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5431 | ASSERT(instr->context()->IsRegister()); |
| 5432 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5433 | StackCheckStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5434 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5435 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5436 | __ bind(&done); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5437 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5438 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5439 | } else { |
| 5440 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 5441 | // Perform stack overflow check if this goto needs it before jumping. |
| 5442 | DeferredStackCheck* deferred_stack_check = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 5443 | new(zone()) DeferredStackCheck(this, instr); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5444 | ExternalReference stack_limit = |
| 5445 | ExternalReference::address_of_stack_limit(isolate()); |
| 5446 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5447 | __ j(below, deferred_stack_check->entry()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5448 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5449 | __ bind(instr->done_label()); |
| 5450 | deferred_stack_check->SetExit(instr->done_label()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5451 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5452 | // Don't record a deoptimization index for the safepoint here. |
| 5453 | // This will be done explicitly when emitting call and the safepoint in |
| 5454 | // the deferred code. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5455 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5456 | } |
| 5457 | |
| 5458 | |
| 5459 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5460 | // This is a pseudo-instruction that ensures that the environment here is |
| 5461 | // properly registered for deoptimization and records the assembler's PC |
| 5462 | // offset. |
| 5463 | LEnvironment* environment = instr->environment(); |
| 5464 | environment->SetSpilledRegisters(instr->SpilledRegisterArray(), |
| 5465 | instr->SpilledDoubleRegisterArray()); |
| 5466 | |
| 5467 | // If the environment were already registered, we would have no way of |
| 5468 | // backpatching it with the spill slot operands. |
| 5469 | ASSERT(!environment->HasBeenRegistered()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5470 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5471 | ASSERT(osr_pc_offset_ == -1); |
| 5472 | osr_pc_offset_ = masm()->pc_offset(); |
| 5473 | } |
| 5474 | |
| 5475 | |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5476 | void LCodeGen::DoIn(LIn* instr) { |
| 5477 | LOperand* obj = instr->object(); |
| 5478 | LOperand* key = instr->key(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5479 | EmitPushTaggedOperand(key); |
| 5480 | EmitPushTaggedOperand(obj); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5481 | ASSERT(instr->HasPointerMap()); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5482 | LPointerMap* pointers = instr->pointer_map(); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5483 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5484 | SafepointGenerator safepoint_generator( |
| 5485 | this, pointers, Safepoint::kLazyDeopt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5486 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5487 | } |
| 5488 | |
| 5489 | |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5490 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 5491 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 5492 | DeoptimizeIf(equal, instr->environment()); |
| 5493 | |
| 5494 | __ cmp(eax, isolate()->factory()->null_value()); |
| 5495 | DeoptimizeIf(equal, instr->environment()); |
| 5496 | |
| 5497 | __ test(eax, Immediate(kSmiTagMask)); |
| 5498 | DeoptimizeIf(zero, instr->environment()); |
| 5499 | |
| 5500 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5501 | __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
| 5502 | DeoptimizeIf(below_equal, instr->environment()); |
| 5503 | |
| 5504 | Label use_cache, call_runtime; |
| 5505 | __ CheckEnumCache(&call_runtime); |
| 5506 | |
| 5507 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 5508 | __ jmp(&use_cache, Label::kNear); |
| 5509 | |
| 5510 | // Get the set of properties to enumerate. |
| 5511 | __ bind(&call_runtime); |
| 5512 | __ push(eax); |
| 5513 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5514 | |
| 5515 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 5516 | isolate()->factory()->meta_map()); |
| 5517 | DeoptimizeIf(not_equal, instr->environment()); |
| 5518 | __ bind(&use_cache); |
| 5519 | } |
| 5520 | |
| 5521 | |
| 5522 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5523 | Register map = ToRegister(instr->map()); |
| 5524 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 5525 | Label load_cache, done; |
| 5526 | __ EnumLength(result, map); |
| 5527 | __ cmp(result, Immediate(Smi::FromInt(0))); |
| 5528 | __ j(not_equal, &load_cache); |
| 5529 | __ mov(result, isolate()->factory()->empty_fixed_array()); |
| 5530 | __ jmp(&done); |
| 5531 | |
| 5532 | __ bind(&load_cache); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5533 | __ LoadInstanceDescriptors(map, result); |
| 5534 | __ mov(result, |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 5535 | FieldOperand(result, DescriptorArray::kEnumCacheOffset)); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5536 | __ mov(result, |
| 5537 | FieldOperand(result, FixedArray::SizeFor(instr->idx()))); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 5538 | __ bind(&done); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5539 | __ test(result, result); |
| 5540 | DeoptimizeIf(equal, instr->environment()); |
| 5541 | } |
| 5542 | |
| 5543 | |
| 5544 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5545 | Register object = ToRegister(instr->value()); |
| 5546 | __ cmp(ToRegister(instr->map()), |
| 5547 | FieldOperand(object, HeapObject::kMapOffset)); |
| 5548 | DeoptimizeIf(not_equal, instr->environment()); |
| 5549 | } |
| 5550 | |
| 5551 | |
| 5552 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 5553 | Register object = ToRegister(instr->object()); |
| 5554 | Register index = ToRegister(instr->index()); |
| 5555 | |
| 5556 | Label out_of_object, done; |
| 5557 | __ cmp(index, Immediate(0)); |
| 5558 | __ j(less, &out_of_object); |
| 5559 | __ mov(object, FieldOperand(object, |
| 5560 | index, |
| 5561 | times_half_pointer_size, |
| 5562 | JSObject::kHeaderSize)); |
| 5563 | __ jmp(&done, Label::kNear); |
| 5564 | |
| 5565 | __ bind(&out_of_object); |
| 5566 | __ mov(object, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 5567 | __ neg(index); |
| 5568 | // Index is now equal to out of object property index plus 1. |
| 5569 | __ mov(object, FieldOperand(object, |
| 5570 | index, |
| 5571 | times_half_pointer_size, |
| 5572 | FixedArray::kHeaderSize - kPointerSize)); |
| 5573 | __ bind(&done); |
| 5574 | } |
| 5575 | |
| 5576 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5577 | #undef __ |
| 5578 | |
| 5579 | } } // namespace v8::internal |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 5580 | |
| 5581 | #endif // V8_TARGET_ARCH_IA32 |