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, |
| 407 | Translation* translation) { |
| 408 | if (environment == NULL) return; |
| 409 | |
| 410 | // The translation includes one command per value in the environment. |
| 411 | int translation_size = environment->values()->length(); |
| 412 | // The output frame height does not include the parameters. |
| 413 | int height = translation_size - environment->parameter_count(); |
| 414 | |
| 415 | WriteTranslation(environment->outer(), translation); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 416 | int closure_id = *info()->closure() != *environment->closure() |
| 417 | ? DefineDeoptimizationLiteral(environment->closure()) |
| 418 | : Translation::kSelfLiteralId; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 419 | switch (environment->frame_type()) { |
| 420 | case JS_FUNCTION: |
| 421 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 422 | break; |
| 423 | case JS_CONSTRUCT: |
| 424 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 425 | break; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 426 | case JS_SETTER: |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 427 | ASSERT(translation_size == 2); |
| 428 | ASSERT(height == 0); |
| 429 | translation->BeginSetterStubFrame(closure_id); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 430 | break; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 431 | case ARGUMENTS_ADAPTOR: |
| 432 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 433 | break; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 434 | } |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 435 | for (int i = 0; i < translation_size; ++i) { |
| 436 | LOperand* value = environment->values()->at(i); |
| 437 | // spilled_registers_ and spilled_double_registers_ are either |
| 438 | // both NULL or both set. |
| 439 | if (environment->spilled_registers() != NULL && value != NULL) { |
| 440 | if (value->IsRegister() && |
| 441 | environment->spilled_registers()[value->index()] != NULL) { |
| 442 | translation->MarkDuplicate(); |
| 443 | AddToTranslation(translation, |
| 444 | environment->spilled_registers()[value->index()], |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 445 | environment->HasTaggedValueAt(i), |
| 446 | environment->HasUint32ValueAt(i)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 447 | } else if ( |
| 448 | value->IsDoubleRegister() && |
| 449 | environment->spilled_double_registers()[value->index()] != NULL) { |
| 450 | translation->MarkDuplicate(); |
| 451 | AddToTranslation( |
| 452 | translation, |
| 453 | environment->spilled_double_registers()[value->index()], |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 454 | false, |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 455 | false); |
| 456 | } |
| 457 | } |
| 458 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 459 | AddToTranslation(translation, |
| 460 | value, |
| 461 | environment->HasTaggedValueAt(i), |
| 462 | environment->HasUint32ValueAt(i)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 463 | } |
| 464 | } |
| 465 | |
| 466 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 467 | void LCodeGen::AddToTranslation(Translation* translation, |
| 468 | LOperand* op, |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 469 | bool is_tagged, |
| 470 | bool is_uint32) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 471 | if (op == NULL) { |
| 472 | // TODO(twuerthinger): Introduce marker operands to indicate that this value |
| 473 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 474 | // this is only used for the arguments object. |
| 475 | translation->StoreArgumentsObject(); |
| 476 | } else if (op->IsStackSlot()) { |
| 477 | if (is_tagged) { |
| 478 | translation->StoreStackSlot(op->index()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 479 | } else if (is_uint32) { |
| 480 | translation->StoreUint32StackSlot(op->index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 481 | } else { |
| 482 | translation->StoreInt32StackSlot(op->index()); |
| 483 | } |
| 484 | } else if (op->IsDoubleStackSlot()) { |
| 485 | translation->StoreDoubleStackSlot(op->index()); |
| 486 | } else if (op->IsArgument()) { |
| 487 | ASSERT(is_tagged); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 488 | int src_index = GetStackSlotCount() + op->index(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 489 | translation->StoreStackSlot(src_index); |
| 490 | } else if (op->IsRegister()) { |
| 491 | Register reg = ToRegister(op); |
| 492 | if (is_tagged) { |
| 493 | translation->StoreRegister(reg); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 494 | } else if (is_uint32) { |
| 495 | translation->StoreUint32Register(reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 496 | } else { |
| 497 | translation->StoreInt32Register(reg); |
| 498 | } |
| 499 | } else if (op->IsDoubleRegister()) { |
| 500 | XMMRegister reg = ToDoubleRegister(op); |
| 501 | translation->StoreDoubleRegister(reg); |
| 502 | } else if (op->IsConstantOperand()) { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 503 | HConstant* constant = chunk()->LookupConstant(LConstantOperand::cast(op)); |
| 504 | int src_index = DefineDeoptimizationLiteral(constant->handle()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 505 | translation->StoreLiteral(src_index); |
| 506 | } else { |
| 507 | UNREACHABLE(); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 512 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 513 | RelocInfo::Mode mode, |
| 514 | LInstruction* instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 515 | SafepointMode safepoint_mode) { |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 516 | ASSERT(instr != NULL); |
| 517 | LPointerMap* pointers = instr->pointer_map(); |
| 518 | RecordPosition(pointers->position()); |
| 519 | __ call(code, mode); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 520 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 521 | |
| 522 | // Signal that we don't inline smi code before these stubs in the |
| 523 | // optimizing code generator. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 524 | if (code->kind() == Code::BINARY_OP_IC || |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 525 | code->kind() == Code::COMPARE_IC) { |
| 526 | __ nop(); |
| 527 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 531 | void LCodeGen::CallCode(Handle<Code> code, |
| 532 | RelocInfo::Mode mode, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 533 | LInstruction* instr) { |
| 534 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 538 | void LCodeGen::CallRuntime(const Runtime::Function* fun, |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 539 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 540 | LInstruction* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 541 | ASSERT(instr != NULL); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 542 | ASSERT(instr->HasPointerMap()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 543 | LPointerMap* pointers = instr->pointer_map(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 544 | RecordPosition(pointers->position()); |
| 545 | |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 546 | __ CallRuntime(fun, argc); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 547 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 548 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 552 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 553 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 554 | LInstruction* instr, |
| 555 | LOperand* context) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 556 | if (context->IsRegister()) { |
| 557 | if (!ToRegister(context).is(esi)) { |
| 558 | __ mov(esi, ToRegister(context)); |
| 559 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 560 | } else if (context->IsStackSlot()) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 561 | __ mov(esi, ToOperand(context)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 562 | } else if (context->IsConstantOperand()) { |
rossberg@chromium.org | 657d53b | 2012-07-12 11:06:03 +0000 | [diff] [blame] | 563 | HConstant* constant = |
| 564 | chunk_->LookupConstant(LConstantOperand::cast(context)); |
| 565 | __ LoadHeapObject(esi, Handle<Context>::cast(constant->handle())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 566 | } else { |
| 567 | UNREACHABLE(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 568 | } |
| 569 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 570 | __ CallRuntimeSaveDoubles(id); |
| 571 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 572 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 576 | void LCodeGen::RegisterEnvironmentForDeoptimization( |
| 577 | LEnvironment* environment, Safepoint::DeoptMode mode) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 578 | if (!environment->HasBeenRegistered()) { |
| 579 | // Physical stack frame layout: |
| 580 | // -x ............. -4 0 ..................................... y |
| 581 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 582 | |
| 583 | // Layout of the environment: |
| 584 | // 0 ..................................................... size-1 |
| 585 | // [parameters] [locals] [expression stack including arguments] |
| 586 | |
| 587 | // Layout of the translation: |
| 588 | // 0 ........................................................ size - 1 + 4 |
| 589 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 590 | // |>------------ translation_size ------------<| |
| 591 | |
| 592 | int frame_count = 0; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 593 | int jsframe_count = 0; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 594 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 595 | ++frame_count; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 596 | if (e->frame_type() == JS_FUNCTION) { |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 597 | ++jsframe_count; |
| 598 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 599 | } |
rossberg@chromium.org | 400388e | 2012-06-06 09:29:22 +0000 | [diff] [blame] | 600 | Translation translation(&translations_, frame_count, jsframe_count, |
| 601 | zone()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 602 | WriteTranslation(environment, &translation); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 603 | int deoptimization_index = deoptimizations_.length(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 604 | int pc_offset = masm()->pc_offset(); |
| 605 | environment->Register(deoptimization_index, |
| 606 | translation.index(), |
| 607 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 608 | deoptimizations_.Add(environment, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 609 | } |
| 610 | } |
| 611 | |
| 612 | |
| 613 | void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 614 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 615 | ASSERT(environment->HasBeenRegistered()); |
| 616 | int id = environment->deoptimization_index(); |
| 617 | Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 618 | if (entry == NULL) { |
| 619 | Abort("bailout was not prepared"); |
| 620 | return; |
| 621 | } |
| 622 | |
| 623 | if (FLAG_deopt_every_n_times != 0) { |
| 624 | Handle<SharedFunctionInfo> shared(info_->shared_info()); |
| 625 | Label no_deopt; |
| 626 | __ pushfd(); |
| 627 | __ push(eax); |
| 628 | __ push(ebx); |
| 629 | __ mov(ebx, shared); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 630 | __ mov(eax, |
| 631 | FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 632 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 633 | __ j(not_zero, &no_deopt, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 634 | if (FLAG_trap_on_deopt) __ int3(); |
| 635 | __ mov(eax, Immediate(Smi::FromInt(FLAG_deopt_every_n_times))); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 636 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset), |
| 637 | eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 638 | __ pop(ebx); |
| 639 | __ pop(eax); |
| 640 | __ popfd(); |
| 641 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 642 | |
| 643 | __ bind(&no_deopt); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 644 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset), |
| 645 | eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 646 | __ pop(ebx); |
| 647 | __ pop(eax); |
| 648 | __ popfd(); |
| 649 | } |
| 650 | |
| 651 | if (cc == no_condition) { |
| 652 | if (FLAG_trap_on_deopt) __ int3(); |
| 653 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 654 | } else { |
| 655 | if (FLAG_trap_on_deopt) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 656 | Label done; |
| 657 | __ j(NegateCondition(cc), &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 658 | __ int3(); |
| 659 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 660 | __ bind(&done); |
| 661 | } else { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 662 | __ j(cc, entry, RelocInfo::RUNTIME_ENTRY); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 663 | } |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | |
| 668 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 669 | int length = deoptimizations_.length(); |
| 670 | if (length == 0) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 671 | Handle<DeoptimizationInputData> data = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 672 | factory()->NewDeoptimizationInputData(length, TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 673 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 674 | Handle<ByteArray> translations = translations_.CreateByteArray(); |
| 675 | data->SetTranslationByteArray(*translations); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 676 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 677 | |
| 678 | Handle<FixedArray> literals = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 679 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 680 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 681 | literals->set(i, *deoptimization_literals_[i]); |
| 682 | } |
| 683 | data->SetLiteralArray(*literals); |
| 684 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 685 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id().ToInt())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 686 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 687 | |
| 688 | // Populate the deoptimization entries. |
| 689 | for (int i = 0; i < length; i++) { |
| 690 | LEnvironment* env = deoptimizations_[i]; |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 691 | data->SetAstId(i, env->ast_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 692 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 693 | data->SetArgumentsStackHeight(i, |
| 694 | Smi::FromInt(env->arguments_stack_height())); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 695 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 696 | } |
| 697 | code->set_deoptimization_data(*data); |
| 698 | } |
| 699 | |
| 700 | |
| 701 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 702 | int result = deoptimization_literals_.length(); |
| 703 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 704 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 705 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 706 | deoptimization_literals_.Add(literal, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 707 | return result; |
| 708 | } |
| 709 | |
| 710 | |
| 711 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 712 | ASSERT(deoptimization_literals_.length() == 0); |
| 713 | |
| 714 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 715 | chunk()->inlined_closures(); |
| 716 | |
| 717 | for (int i = 0, length = inlined_closures->length(); |
| 718 | i < length; |
| 719 | i++) { |
| 720 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 721 | } |
| 722 | |
| 723 | inlined_function_count_ = deoptimization_literals_.length(); |
| 724 | } |
| 725 | |
| 726 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 727 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 728 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 729 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 730 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 731 | } else { |
| 732 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 733 | RecordSafepointWithRegisters( |
| 734 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 739 | void LCodeGen::RecordSafepoint( |
| 740 | LPointerMap* pointers, |
| 741 | Safepoint::Kind kind, |
| 742 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 743 | Safepoint::DeoptMode deopt_mode) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 744 | ASSERT(kind == expected_safepoint_kind_); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 745 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 746 | Safepoint safepoint = |
| 747 | safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 748 | for (int i = 0; i < operands->length(); i++) { |
| 749 | LOperand* pointer = operands->at(i); |
| 750 | if (pointer->IsStackSlot()) { |
rossberg@chromium.org | 400388e | 2012-06-06 09:29:22 +0000 | [diff] [blame] | 751 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 752 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 753 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 754 | } |
| 755 | } |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 756 | } |
| 757 | |
| 758 | |
| 759 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 760 | Safepoint::DeoptMode mode) { |
| 761 | RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 765 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 766 | LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 767 | RecordSafepoint(&empty_pointers, mode); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 771 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 772 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 773 | Safepoint::DeoptMode mode) { |
| 774 | RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | |
| 778 | void LCodeGen::RecordPosition(int position) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 779 | if (position == RelocInfo::kNoPosition) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 780 | masm()->positions_recorder()->RecordPosition(position); |
| 781 | } |
| 782 | |
| 783 | |
| 784 | void LCodeGen::DoLabel(LLabel* label) { |
| 785 | if (label->is_loop_header()) { |
| 786 | Comment(";;; B%d - LOOP entry", label->block_id()); |
| 787 | } else { |
| 788 | Comment(";;; B%d", label->block_id()); |
| 789 | } |
| 790 | __ bind(label->label()); |
| 791 | current_block_ = label->block_id(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 792 | DoGap(label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | |
| 796 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 797 | resolver_.Resolve(move); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
| 801 | void LCodeGen::DoGap(LGap* gap) { |
| 802 | for (int i = LGap::FIRST_INNER_POSITION; |
| 803 | i <= LGap::LAST_INNER_POSITION; |
| 804 | i++) { |
| 805 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 806 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 807 | if (move != NULL) DoParallelMove(move); |
| 808 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 812 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 813 | DoGap(instr); |
| 814 | } |
| 815 | |
| 816 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 817 | void LCodeGen::DoParameter(LParameter* instr) { |
| 818 | // Nothing to do. |
| 819 | } |
| 820 | |
| 821 | |
| 822 | void LCodeGen::DoCallStub(LCallStub* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 823 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 824 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 825 | switch (instr->hydrogen()->major_key()) { |
| 826 | case CodeStub::RegExpConstructResult: { |
| 827 | RegExpConstructResultStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 828 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 829 | break; |
| 830 | } |
| 831 | case CodeStub::RegExpExec: { |
| 832 | RegExpExecStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 833 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 834 | break; |
| 835 | } |
| 836 | case CodeStub::SubString: { |
| 837 | SubStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 838 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 839 | break; |
| 840 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 841 | case CodeStub::NumberToString: { |
| 842 | NumberToStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 843 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 844 | break; |
| 845 | } |
| 846 | case CodeStub::StringAdd: { |
| 847 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 848 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 849 | break; |
| 850 | } |
| 851 | case CodeStub::StringCompare: { |
| 852 | StringCompareStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 853 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 854 | break; |
| 855 | } |
| 856 | case CodeStub::TranscendentalCache: { |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 857 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 858 | TranscendentalCacheStub::TAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 859 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 860 | break; |
| 861 | } |
| 862 | default: |
| 863 | UNREACHABLE(); |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | |
| 868 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
| 869 | // Nothing to do. |
| 870 | } |
| 871 | |
| 872 | |
| 873 | void LCodeGen::DoModI(LModI* instr) { |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 874 | if (instr->hydrogen()->HasPowerOf2Divisor()) { |
| 875 | Register dividend = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 876 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 877 | int32_t divisor = |
| 878 | HConstant::cast(instr->hydrogen()->right())->Integer32Value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 879 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 880 | if (divisor < 0) divisor = -divisor; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 881 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 882 | Label positive_dividend, done; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 883 | __ test(dividend, Operand(dividend)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 884 | __ j(not_sign, &positive_dividend, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 885 | __ neg(dividend); |
| 886 | __ and_(dividend, divisor - 1); |
| 887 | __ neg(dividend); |
| 888 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 889 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 890 | DeoptimizeIf(no_condition, instr->environment()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 891 | } else { |
| 892 | __ jmp(&done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 893 | } |
| 894 | __ bind(&positive_dividend); |
| 895 | __ and_(dividend, divisor - 1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 896 | __ bind(&done); |
| 897 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 898 | Label done, remainder_eq_dividend, slow, do_subtraction, both_positive; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 899 | Register left_reg = ToRegister(instr->InputAt(0)); |
| 900 | Register right_reg = ToRegister(instr->InputAt(1)); |
| 901 | Register result_reg = ToRegister(instr->result()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 902 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 903 | ASSERT(left_reg.is(eax)); |
| 904 | ASSERT(result_reg.is(edx)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 905 | ASSERT(!right_reg.is(eax)); |
| 906 | ASSERT(!right_reg.is(edx)); |
| 907 | |
| 908 | // Check for x % 0. |
| 909 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 910 | __ test(right_reg, Operand(right_reg)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 911 | DeoptimizeIf(zero, instr->environment()); |
| 912 | } |
| 913 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 914 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 915 | __ j(zero, &remainder_eq_dividend, Label::kNear); |
| 916 | __ j(sign, &slow, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 917 | |
| 918 | __ test(right_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 919 | __ j(not_sign, &both_positive, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 920 | // The sign of the divisor doesn't matter. |
| 921 | __ neg(right_reg); |
| 922 | |
| 923 | __ bind(&both_positive); |
| 924 | // If the dividend is smaller than the nonnegative |
| 925 | // divisor, the dividend is the result. |
| 926 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 927 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 928 | |
| 929 | // Check if the divisor is a PowerOfTwo integer. |
| 930 | Register scratch = ToRegister(instr->TempAt(0)); |
| 931 | __ mov(scratch, right_reg); |
| 932 | __ sub(Operand(scratch), Immediate(1)); |
| 933 | __ test(scratch, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 934 | __ j(not_zero, &do_subtraction, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 935 | __ and_(left_reg, Operand(scratch)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 936 | __ jmp(&remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 937 | |
| 938 | __ bind(&do_subtraction); |
| 939 | const int kUnfolds = 3; |
| 940 | // Try a few subtractions of the dividend. |
| 941 | __ mov(scratch, left_reg); |
| 942 | for (int i = 0; i < kUnfolds; i++) { |
| 943 | // Reduce the dividend by the divisor. |
| 944 | __ sub(left_reg, Operand(right_reg)); |
| 945 | // Check if the dividend is less than the divisor. |
| 946 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 947 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 948 | } |
| 949 | __ mov(left_reg, scratch); |
| 950 | |
| 951 | // Slow case, using idiv instruction. |
| 952 | __ bind(&slow); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 953 | // Sign extend to edx. |
| 954 | __ cdq(); |
| 955 | |
| 956 | // Check for (0 % -x) that will produce negative zero. |
| 957 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 958 | Label positive_left; |
| 959 | Label done; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 960 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 961 | __ j(not_sign, &positive_left, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 962 | __ idiv(right_reg); |
| 963 | |
| 964 | // 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] | 965 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 966 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 967 | |
| 968 | DeoptimizeIf(no_condition, instr->environment()); |
| 969 | __ bind(&positive_left); |
| 970 | __ idiv(right_reg); |
| 971 | __ bind(&done); |
| 972 | } else { |
| 973 | __ idiv(right_reg); |
| 974 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 975 | __ jmp(&done, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 976 | |
| 977 | __ bind(&remainder_eq_dividend); |
| 978 | __ mov(result_reg, left_reg); |
| 979 | |
| 980 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 981 | } |
| 982 | } |
| 983 | |
| 984 | |
| 985 | void LCodeGen::DoDivI(LDivI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 986 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 987 | ASSERT(ToRegister(instr->result()).is(eax)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 988 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 989 | ASSERT(!ToRegister(instr->InputAt(1)).is(eax)); |
| 990 | ASSERT(!ToRegister(instr->InputAt(1)).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 991 | |
| 992 | Register left_reg = eax; |
| 993 | |
| 994 | // Check for x / 0. |
| 995 | Register right_reg = ToRegister(right); |
| 996 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 997 | __ test(right_reg, ToOperand(right)); |
| 998 | DeoptimizeIf(zero, instr->environment()); |
| 999 | } |
| 1000 | |
| 1001 | // Check for (0 / -x) that will produce negative zero. |
| 1002 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1003 | Label left_not_zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1004 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1005 | __ j(not_zero, &left_not_zero, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1006 | __ test(right_reg, ToOperand(right)); |
| 1007 | DeoptimizeIf(sign, instr->environment()); |
| 1008 | __ bind(&left_not_zero); |
| 1009 | } |
| 1010 | |
| 1011 | // Check for (-kMinInt / -1). |
| 1012 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1013 | Label left_not_min_int; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1014 | __ cmp(left_reg, kMinInt); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1015 | __ j(not_zero, &left_not_min_int, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1016 | __ cmp(right_reg, -1); |
| 1017 | DeoptimizeIf(zero, instr->environment()); |
| 1018 | __ bind(&left_not_min_int); |
| 1019 | } |
| 1020 | |
| 1021 | // Sign extend to edx. |
| 1022 | __ cdq(); |
| 1023 | __ idiv(right_reg); |
| 1024 | |
| 1025 | // Deoptimize if remainder is not 0. |
| 1026 | __ test(edx, Operand(edx)); |
| 1027 | DeoptimizeIf(not_zero, instr->environment()); |
| 1028 | } |
| 1029 | |
| 1030 | |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 1031 | void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) { |
| 1032 | ASSERT(instr->InputAt(1)->IsConstantOperand()); |
| 1033 | |
| 1034 | Register dividend = ToRegister(instr->InputAt(0)); |
| 1035 | int32_t divisor = ToInteger32(LConstantOperand::cast(instr->InputAt(1))); |
| 1036 | Register result = ToRegister(instr->result()); |
| 1037 | |
| 1038 | switch (divisor) { |
| 1039 | case 0: |
| 1040 | DeoptimizeIf(no_condition, instr->environment()); |
| 1041 | return; |
| 1042 | |
| 1043 | case 1: |
| 1044 | __ Move(result, dividend); |
| 1045 | return; |
| 1046 | |
| 1047 | case -1: |
| 1048 | __ Move(result, dividend); |
| 1049 | __ neg(result); |
| 1050 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1051 | DeoptimizeIf(zero, instr->environment()); |
| 1052 | } |
| 1053 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1054 | DeoptimizeIf(overflow, instr->environment()); |
| 1055 | } |
| 1056 | return; |
| 1057 | } |
| 1058 | |
| 1059 | uint32_t divisor_abs = abs(divisor); |
| 1060 | if (IsPowerOf2(divisor_abs)) { |
| 1061 | int32_t power = WhichPowerOf2(divisor_abs); |
| 1062 | if (divisor < 0) { |
| 1063 | // Input[dividend] is clobbered. |
| 1064 | // The sequence is tedious because neg(dividend) might overflow. |
| 1065 | __ mov(result, dividend); |
| 1066 | __ sar(dividend, 31); |
| 1067 | __ neg(result); |
| 1068 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1069 | DeoptimizeIf(zero, instr->environment()); |
| 1070 | } |
| 1071 | __ shl(dividend, 32 - power); |
| 1072 | __ sar(result, power); |
| 1073 | __ not_(dividend); |
| 1074 | // Clear result.sign if dividend.sign is set. |
| 1075 | __ and_(result, dividend); |
| 1076 | } else { |
| 1077 | __ Move(result, dividend); |
| 1078 | __ sar(result, power); |
| 1079 | } |
| 1080 | } else { |
| 1081 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 1082 | ASSERT(ToRegister(instr->result()).is(edx)); |
| 1083 | Register scratch = ToRegister(instr->TempAt(0)); |
| 1084 | |
| 1085 | // Find b which: 2^b < divisor_abs < 2^(b+1). |
| 1086 | unsigned b = 31 - CompilerIntrinsics::CountLeadingZeros(divisor_abs); |
| 1087 | unsigned shift = 32 + b; // Precision +1bit (effectively). |
| 1088 | double multiplier_f = |
| 1089 | static_cast<double>(static_cast<uint64_t>(1) << shift) / divisor_abs; |
| 1090 | int64_t multiplier; |
| 1091 | if (multiplier_f - floor(multiplier_f) < 0.5) { |
| 1092 | multiplier = static_cast<int64_t>(floor(multiplier_f)); |
| 1093 | } else { |
| 1094 | multiplier = static_cast<int64_t>(floor(multiplier_f)) + 1; |
| 1095 | } |
| 1096 | // The multiplier is a uint32. |
| 1097 | ASSERT(multiplier > 0 && |
| 1098 | multiplier < (static_cast<int64_t>(1) << 32)); |
| 1099 | __ mov(scratch, dividend); |
| 1100 | if (divisor < 0 && |
| 1101 | instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1102 | __ test(dividend, dividend); |
| 1103 | DeoptimizeIf(zero, instr->environment()); |
| 1104 | } |
| 1105 | __ mov(edx, static_cast<int32_t>(multiplier)); |
| 1106 | __ imul(edx); |
| 1107 | if (static_cast<int32_t>(multiplier) < 0) { |
| 1108 | __ add(edx, scratch); |
| 1109 | } |
| 1110 | Register reg_lo = eax; |
| 1111 | Register reg_byte_scratch = scratch; |
| 1112 | if (!reg_byte_scratch.is_byte_register()) { |
| 1113 | __ xchg(reg_lo, reg_byte_scratch); |
| 1114 | reg_lo = scratch; |
| 1115 | reg_byte_scratch = eax; |
| 1116 | } |
| 1117 | if (divisor < 0) { |
| 1118 | __ xor_(reg_byte_scratch, reg_byte_scratch); |
| 1119 | __ cmp(reg_lo, 0x40000000); |
| 1120 | __ setcc(above, reg_byte_scratch); |
| 1121 | __ neg(edx); |
| 1122 | __ sub(edx, reg_byte_scratch); |
| 1123 | } else { |
| 1124 | __ xor_(reg_byte_scratch, reg_byte_scratch); |
| 1125 | __ cmp(reg_lo, 0xC0000000); |
| 1126 | __ setcc(above_equal, reg_byte_scratch); |
| 1127 | __ add(edx, reg_byte_scratch); |
| 1128 | } |
| 1129 | __ sar(edx, shift - 32); |
| 1130 | } |
| 1131 | } |
| 1132 | |
| 1133 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1134 | void LCodeGen::DoMulI(LMulI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1135 | Register left = ToRegister(instr->InputAt(0)); |
| 1136 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1137 | |
| 1138 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1139 | __ mov(ToRegister(instr->TempAt(0)), left); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1140 | } |
| 1141 | |
| 1142 | if (right->IsConstantOperand()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1143 | // Try strength reductions on the multiplication. |
| 1144 | // All replacement instructions are at most as long as the imul |
| 1145 | // and have better latency. |
| 1146 | int constant = ToInteger32(LConstantOperand::cast(right)); |
| 1147 | if (constant == -1) { |
| 1148 | __ neg(left); |
| 1149 | } else if (constant == 0) { |
| 1150 | __ xor_(left, Operand(left)); |
| 1151 | } else if (constant == 2) { |
| 1152 | __ add(left, Operand(left)); |
| 1153 | } else if (!instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1154 | // If we know that the multiplication can't overflow, it's safe to |
| 1155 | // use instructions that don't set the overflow flag for the |
| 1156 | // multiplication. |
| 1157 | switch (constant) { |
| 1158 | case 1: |
| 1159 | // Do nothing. |
| 1160 | break; |
| 1161 | case 3: |
| 1162 | __ lea(left, Operand(left, left, times_2, 0)); |
| 1163 | break; |
| 1164 | case 4: |
| 1165 | __ shl(left, 2); |
| 1166 | break; |
| 1167 | case 5: |
| 1168 | __ lea(left, Operand(left, left, times_4, 0)); |
| 1169 | break; |
| 1170 | case 8: |
| 1171 | __ shl(left, 3); |
| 1172 | break; |
| 1173 | case 9: |
| 1174 | __ lea(left, Operand(left, left, times_8, 0)); |
| 1175 | break; |
| 1176 | case 16: |
| 1177 | __ shl(left, 4); |
| 1178 | break; |
| 1179 | default: |
| 1180 | __ imul(left, left, constant); |
| 1181 | break; |
| 1182 | } |
| 1183 | } else { |
| 1184 | __ imul(left, left, constant); |
| 1185 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1186 | } else { |
| 1187 | __ imul(left, ToOperand(right)); |
| 1188 | } |
| 1189 | |
| 1190 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1191 | DeoptimizeIf(overflow, instr->environment()); |
| 1192 | } |
| 1193 | |
| 1194 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1195 | // Bail out if the result is supposed to be negative zero. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1196 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1197 | __ test(left, Operand(left)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1198 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1199 | if (right->IsConstantOperand()) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1200 | if (ToInteger32(LConstantOperand::cast(right)) <= 0) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1201 | DeoptimizeIf(no_condition, instr->environment()); |
| 1202 | } |
| 1203 | } else { |
| 1204 | // Test the non-zero operand for negative sign. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1205 | __ or_(ToRegister(instr->TempAt(0)), ToOperand(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1206 | DeoptimizeIf(sign, instr->environment()); |
| 1207 | } |
| 1208 | __ bind(&done); |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | |
| 1213 | void LCodeGen::DoBitI(LBitI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1214 | LOperand* left = instr->InputAt(0); |
| 1215 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1216 | ASSERT(left->Equals(instr->result())); |
| 1217 | ASSERT(left->IsRegister()); |
| 1218 | |
| 1219 | if (right->IsConstantOperand()) { |
| 1220 | int right_operand = ToInteger32(LConstantOperand::cast(right)); |
| 1221 | switch (instr->op()) { |
| 1222 | case Token::BIT_AND: |
| 1223 | __ and_(ToRegister(left), right_operand); |
| 1224 | break; |
| 1225 | case Token::BIT_OR: |
| 1226 | __ or_(ToRegister(left), right_operand); |
| 1227 | break; |
| 1228 | case Token::BIT_XOR: |
| 1229 | __ xor_(ToRegister(left), right_operand); |
| 1230 | break; |
| 1231 | default: |
| 1232 | UNREACHABLE(); |
| 1233 | break; |
| 1234 | } |
| 1235 | } else { |
| 1236 | switch (instr->op()) { |
| 1237 | case Token::BIT_AND: |
| 1238 | __ and_(ToRegister(left), ToOperand(right)); |
| 1239 | break; |
| 1240 | case Token::BIT_OR: |
| 1241 | __ or_(ToRegister(left), ToOperand(right)); |
| 1242 | break; |
| 1243 | case Token::BIT_XOR: |
| 1244 | __ xor_(ToRegister(left), ToOperand(right)); |
| 1245 | break; |
| 1246 | default: |
| 1247 | UNREACHABLE(); |
| 1248 | break; |
| 1249 | } |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | void LCodeGen::DoShiftI(LShiftI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1255 | LOperand* left = instr->InputAt(0); |
| 1256 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1257 | ASSERT(left->Equals(instr->result())); |
| 1258 | ASSERT(left->IsRegister()); |
| 1259 | if (right->IsRegister()) { |
| 1260 | ASSERT(ToRegister(right).is(ecx)); |
| 1261 | |
| 1262 | switch (instr->op()) { |
| 1263 | case Token::SAR: |
| 1264 | __ sar_cl(ToRegister(left)); |
| 1265 | break; |
| 1266 | case Token::SHR: |
| 1267 | __ shr_cl(ToRegister(left)); |
| 1268 | if (instr->can_deopt()) { |
| 1269 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1270 | DeoptimizeIf(not_zero, instr->environment()); |
| 1271 | } |
| 1272 | break; |
| 1273 | case Token::SHL: |
| 1274 | __ shl_cl(ToRegister(left)); |
| 1275 | break; |
| 1276 | default: |
| 1277 | UNREACHABLE(); |
| 1278 | break; |
| 1279 | } |
| 1280 | } else { |
| 1281 | int value = ToInteger32(LConstantOperand::cast(right)); |
| 1282 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1283 | switch (instr->op()) { |
| 1284 | case Token::SAR: |
| 1285 | if (shift_count != 0) { |
| 1286 | __ sar(ToRegister(left), shift_count); |
| 1287 | } |
| 1288 | break; |
| 1289 | case Token::SHR: |
| 1290 | if (shift_count == 0 && instr->can_deopt()) { |
| 1291 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1292 | DeoptimizeIf(not_zero, instr->environment()); |
| 1293 | } else { |
| 1294 | __ shr(ToRegister(left), shift_count); |
| 1295 | } |
| 1296 | break; |
| 1297 | case Token::SHL: |
| 1298 | if (shift_count != 0) { |
| 1299 | __ shl(ToRegister(left), shift_count); |
| 1300 | } |
| 1301 | break; |
| 1302 | default: |
| 1303 | UNREACHABLE(); |
| 1304 | break; |
| 1305 | } |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | |
| 1310 | void LCodeGen::DoSubI(LSubI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1311 | LOperand* left = instr->InputAt(0); |
| 1312 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1313 | ASSERT(left->Equals(instr->result())); |
| 1314 | |
| 1315 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1316 | __ sub(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1317 | } else { |
| 1318 | __ sub(ToRegister(left), ToOperand(right)); |
| 1319 | } |
| 1320 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1321 | DeoptimizeIf(overflow, instr->environment()); |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | |
| 1326 | void LCodeGen::DoConstantI(LConstantI* instr) { |
| 1327 | ASSERT(instr->result()->IsRegister()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1328 | __ Set(ToRegister(instr->result()), Immediate(instr->value())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | |
| 1332 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1333 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1334 | XMMRegister res = ToDoubleRegister(instr->result()); |
| 1335 | double v = instr->value(); |
| 1336 | // Use xor to produce +0.0 in a fast and compact way, but avoid to |
| 1337 | // do so if the constant is -0.0. |
| 1338 | if (BitCast<uint64_t, double>(v) == 0) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1339 | __ xorps(res, res); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1340 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1341 | Register temp = ToRegister(instr->TempAt(0)); |
| 1342 | uint64_t int_val = BitCast<uint64_t, double>(v); |
| 1343 | int32_t lower = static_cast<int32_t>(int_val); |
| 1344 | int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1345 | if (CpuFeatures::IsSupported(SSE4_1)) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1346 | CpuFeatures::Scope scope(SSE4_1); |
| 1347 | if (lower != 0) { |
| 1348 | __ Set(temp, Immediate(lower)); |
| 1349 | __ movd(res, Operand(temp)); |
| 1350 | __ Set(temp, Immediate(upper)); |
| 1351 | __ pinsrd(res, Operand(temp), 1); |
| 1352 | } else { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1353 | __ xorps(res, res); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1354 | __ Set(temp, Immediate(upper)); |
| 1355 | __ pinsrd(res, Operand(temp), 1); |
| 1356 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1357 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1358 | __ Set(temp, Immediate(upper)); |
| 1359 | __ movd(res, Operand(temp)); |
| 1360 | __ psllq(res, 32); |
| 1361 | if (lower != 0) { |
| 1362 | __ Set(temp, Immediate(lower)); |
| 1363 | __ movd(xmm0, Operand(temp)); |
| 1364 | __ por(res, xmm0); |
| 1365 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1366 | } |
| 1367 | } |
| 1368 | } |
| 1369 | |
| 1370 | |
| 1371 | void LCodeGen::DoConstantT(LConstantT* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1372 | Register reg = ToRegister(instr->result()); |
| 1373 | Handle<Object> handle = instr->value(); |
| 1374 | if (handle->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1375 | __ LoadHeapObject(reg, Handle<HeapObject>::cast(handle)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1376 | } else { |
| 1377 | __ Set(reg, Immediate(handle)); |
| 1378 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1379 | } |
| 1380 | |
| 1381 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1382 | void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1383 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1384 | Register array = ToRegister(instr->InputAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1385 | __ mov(result, FieldOperand(array, JSArray::kLengthOffset)); |
| 1386 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1387 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1388 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1389 | void LCodeGen::DoFixedArrayBaseLength( |
| 1390 | LFixedArrayBaseLength* instr) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1391 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1392 | Register array = ToRegister(instr->InputAt(0)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1393 | __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1394 | } |
| 1395 | |
| 1396 | |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 1397 | void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) { |
| 1398 | Register result = ToRegister(instr->result()); |
| 1399 | Register map = ToRegister(instr->InputAt(0)); |
| 1400 | __ EnumLength(result, map); |
| 1401 | } |
| 1402 | |
| 1403 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1404 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1405 | Register result = ToRegister(instr->result()); |
| 1406 | Register input = ToRegister(instr->InputAt(0)); |
| 1407 | |
| 1408 | // Load map into |result|. |
| 1409 | __ mov(result, FieldOperand(input, HeapObject::kMapOffset)); |
| 1410 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1411 | // but the following masking takes care of that anyway. |
| 1412 | __ mov(result, FieldOperand(result, Map::kBitField2Offset)); |
| 1413 | // Retrieve elements_kind from bit field 2. |
| 1414 | __ and_(result, Map::kElementsKindMask); |
| 1415 | __ shr(result, Map::kElementsKindShift); |
| 1416 | } |
| 1417 | |
| 1418 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1419 | void LCodeGen::DoValueOf(LValueOf* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1420 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1421 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1422 | Register map = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1423 | ASSERT(input.is(result)); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1424 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1425 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1426 | // If the object is a smi return the object. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1427 | __ JumpIfSmi(input, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1428 | |
| 1429 | // If the object is not a value type, return the object. |
| 1430 | __ CmpObjectType(input, JS_VALUE_TYPE, map); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1431 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1432 | __ mov(result, FieldOperand(input, JSValue::kValueOffset)); |
| 1433 | |
| 1434 | __ bind(&done); |
| 1435 | } |
| 1436 | |
| 1437 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1438 | void LCodeGen::DoDateField(LDateField* instr) { |
| 1439 | Register object = ToRegister(instr->InputAt(0)); |
| 1440 | Register result = ToRegister(instr->result()); |
| 1441 | Register scratch = ToRegister(instr->TempAt(0)); |
| 1442 | Smi* index = instr->index(); |
| 1443 | Label runtime, done; |
| 1444 | ASSERT(object.is(result)); |
| 1445 | ASSERT(object.is(eax)); |
| 1446 | |
| 1447 | #ifdef DEBUG |
| 1448 | __ AbortIfSmi(object); |
| 1449 | __ CmpObjectType(object, JS_DATE_TYPE, scratch); |
| 1450 | __ Assert(equal, "Trying to get date field from non-date."); |
| 1451 | #endif |
| 1452 | |
| 1453 | if (index->value() == 0) { |
| 1454 | __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
| 1455 | } else { |
| 1456 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1457 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1458 | __ mov(scratch, Operand::StaticVariable(stamp)); |
| 1459 | __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
| 1460 | __ j(not_equal, &runtime, Label::kNear); |
| 1461 | __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
| 1462 | kPointerSize * index->value())); |
| 1463 | __ jmp(&done); |
| 1464 | } |
| 1465 | __ bind(&runtime); |
| 1466 | __ PrepareCallCFunction(2, scratch); |
| 1467 | __ mov(Operand(esp, 0), object); |
| 1468 | __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
| 1469 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1470 | __ bind(&done); |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1475 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1476 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1477 | ASSERT(input->Equals(instr->result())); |
| 1478 | __ not_(ToRegister(input)); |
| 1479 | } |
| 1480 | |
| 1481 | |
| 1482 | void LCodeGen::DoThrow(LThrow* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1483 | __ push(ToOperand(instr->value())); |
| 1484 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1485 | CallRuntime(Runtime::kThrow, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1486 | |
| 1487 | if (FLAG_debug_code) { |
| 1488 | Comment("Unreachable code."); |
| 1489 | __ int3(); |
| 1490 | } |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | void LCodeGen::DoAddI(LAddI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1495 | LOperand* left = instr->InputAt(0); |
| 1496 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1497 | ASSERT(left->Equals(instr->result())); |
| 1498 | |
| 1499 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1500 | __ add(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1501 | } else { |
| 1502 | __ add(ToRegister(left), ToOperand(right)); |
| 1503 | } |
| 1504 | |
| 1505 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1506 | DeoptimizeIf(overflow, instr->environment()); |
| 1507 | } |
| 1508 | } |
| 1509 | |
| 1510 | |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1511 | void LCodeGen::DoMathMinMax(LMathMinMax* instr) { |
| 1512 | LOperand* left = instr->InputAt(0); |
| 1513 | LOperand* right = instr->InputAt(1); |
| 1514 | ASSERT(left->Equals(instr->result())); |
| 1515 | HMathMinMax::Operation operation = instr->hydrogen()->operation(); |
| 1516 | if (instr->hydrogen()->representation().IsInteger32()) { |
| 1517 | Label return_left; |
| 1518 | Condition condition = (operation == HMathMinMax::kMathMin) |
| 1519 | ? less_equal |
| 1520 | : greater_equal; |
| 1521 | if (right->IsConstantOperand()) { |
| 1522 | Operand left_op = ToOperand(left); |
| 1523 | Immediate right_imm = ToInteger32Immediate(right); |
| 1524 | __ cmp(left_op, right_imm); |
| 1525 | __ j(condition, &return_left, Label::kNear); |
| 1526 | __ mov(left_op, right_imm); |
| 1527 | } else { |
| 1528 | Register left_reg = ToRegister(left); |
| 1529 | Operand right_op = ToOperand(right); |
| 1530 | __ cmp(left_reg, right_op); |
| 1531 | __ j(condition, &return_left, Label::kNear); |
| 1532 | __ mov(left_reg, right_op); |
| 1533 | } |
| 1534 | __ bind(&return_left); |
| 1535 | } else { |
| 1536 | ASSERT(instr->hydrogen()->representation().IsDouble()); |
| 1537 | Label check_nan_left, check_zero, return_left, return_right; |
| 1538 | Condition condition = (operation == HMathMinMax::kMathMin) ? below : above; |
| 1539 | XMMRegister left_reg = ToDoubleRegister(left); |
| 1540 | XMMRegister right_reg = ToDoubleRegister(right); |
| 1541 | __ ucomisd(left_reg, right_reg); |
| 1542 | __ j(parity_even, &check_nan_left, Label::kNear); // At least one NaN. |
| 1543 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1544 | __ j(condition, &return_left, Label::kNear); |
| 1545 | __ jmp(&return_right, Label::kNear); |
| 1546 | |
| 1547 | __ bind(&check_zero); |
| 1548 | XMMRegister xmm_scratch = xmm0; |
| 1549 | __ xorps(xmm_scratch, xmm_scratch); |
| 1550 | __ ucomisd(left_reg, xmm_scratch); |
| 1551 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1552 | // At this point, both left and right are either 0 or -0. |
| 1553 | if (operation == HMathMinMax::kMathMin) { |
| 1554 | __ orpd(left_reg, right_reg); |
| 1555 | } else { |
| 1556 | // Since we operate on +0 and/or -0, addsd and andsd have the same effect. |
| 1557 | __ addsd(left_reg, right_reg); |
| 1558 | } |
| 1559 | __ jmp(&return_left, Label::kNear); |
| 1560 | |
| 1561 | __ bind(&check_nan_left); |
| 1562 | __ ucomisd(left_reg, left_reg); // NaN check. |
| 1563 | __ j(parity_even, &return_left, Label::kNear); // left == NaN. |
| 1564 | __ bind(&return_right); |
| 1565 | __ movsd(left_reg, right_reg); |
| 1566 | |
| 1567 | __ bind(&return_left); |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1572 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1573 | XMMRegister left = ToDoubleRegister(instr->InputAt(0)); |
| 1574 | XMMRegister right = ToDoubleRegister(instr->InputAt(1)); |
| 1575 | XMMRegister result = ToDoubleRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1576 | // Modulo uses a fixed result register. |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1577 | ASSERT(instr->op() == Token::MOD || left.is(result)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1578 | switch (instr->op()) { |
| 1579 | case Token::ADD: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1580 | __ addsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1581 | break; |
| 1582 | case Token::SUB: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1583 | __ subsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1584 | break; |
| 1585 | case Token::MUL: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1586 | __ mulsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1587 | break; |
| 1588 | case Token::DIV: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1589 | __ divsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1590 | break; |
| 1591 | case Token::MOD: { |
| 1592 | // Pass two doubles as arguments on the stack. |
| 1593 | __ PrepareCallCFunction(4, eax); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1594 | __ movdbl(Operand(esp, 0 * kDoubleSize), left); |
| 1595 | __ movdbl(Operand(esp, 1 * kDoubleSize), right); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1596 | __ CallCFunction( |
| 1597 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1598 | 4); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1599 | |
| 1600 | // Return value is in st(0) on ia32. |
| 1601 | // Store it into the (fixed) result register. |
| 1602 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 1603 | __ fstp_d(Operand(esp, 0)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1604 | __ movdbl(result, Operand(esp, 0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1605 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 1606 | break; |
| 1607 | } |
| 1608 | default: |
| 1609 | UNREACHABLE(); |
| 1610 | break; |
| 1611 | } |
| 1612 | } |
| 1613 | |
| 1614 | |
| 1615 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1616 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1617 | ASSERT(ToRegister(instr->left()).is(edx)); |
| 1618 | ASSERT(ToRegister(instr->right()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1619 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 1620 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1621 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1622 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1623 | __ nop(); // Signals no inlined code. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1624 | } |
| 1625 | |
| 1626 | |
| 1627 | int LCodeGen::GetNextEmittedBlock(int block) { |
| 1628 | for (int i = block + 1; i < graph()->blocks()->length(); ++i) { |
| 1629 | LLabel* label = chunk_->GetLabel(i); |
| 1630 | if (!label->HasReplacement()) return i; |
| 1631 | } |
| 1632 | return -1; |
| 1633 | } |
| 1634 | |
| 1635 | |
| 1636 | void LCodeGen::EmitBranch(int left_block, int right_block, Condition cc) { |
| 1637 | int next_block = GetNextEmittedBlock(current_block_); |
| 1638 | right_block = chunk_->LookupDestination(right_block); |
| 1639 | left_block = chunk_->LookupDestination(left_block); |
| 1640 | |
| 1641 | if (right_block == left_block) { |
| 1642 | EmitGoto(left_block); |
| 1643 | } else if (left_block == next_block) { |
| 1644 | __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); |
| 1645 | } else if (right_block == next_block) { |
| 1646 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1647 | } else { |
| 1648 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1649 | __ jmp(chunk_->GetAssemblyLabel(right_block)); |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | |
| 1654 | void LCodeGen::DoBranch(LBranch* instr) { |
| 1655 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1656 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1657 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1658 | Representation r = instr->hydrogen()->value()->representation(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1659 | if (r.IsInteger32()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1660 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1661 | __ test(reg, Operand(reg)); |
| 1662 | EmitBranch(true_block, false_block, not_zero); |
| 1663 | } else if (r.IsDouble()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1664 | XMMRegister reg = ToDoubleRegister(instr->InputAt(0)); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1665 | __ xorps(xmm0, xmm0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1666 | __ ucomisd(reg, xmm0); |
| 1667 | EmitBranch(true_block, false_block, not_equal); |
| 1668 | } else { |
| 1669 | ASSERT(r.IsTagged()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1670 | Register reg = ToRegister(instr->InputAt(0)); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1671 | HType type = instr->hydrogen()->value()->type(); |
| 1672 | if (type.IsBoolean()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1673 | __ cmp(reg, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1674 | EmitBranch(true_block, false_block, equal); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1675 | } else if (type.IsSmi()) { |
| 1676 | __ test(reg, Operand(reg)); |
| 1677 | EmitBranch(true_block, false_block, not_equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1678 | } else { |
| 1679 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1680 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1681 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1682 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 1683 | // Avoid deopts in the case where we've never executed this path before. |
| 1684 | if (expected.IsEmpty()) expected = ToBooleanStub::all_types(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1685 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1686 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 1687 | // undefined -> false. |
| 1688 | __ cmp(reg, factory()->undefined_value()); |
| 1689 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1690 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1691 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 1692 | // true -> true. |
| 1693 | __ cmp(reg, factory()->true_value()); |
| 1694 | __ j(equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1695 | // false -> false. |
| 1696 | __ cmp(reg, factory()->false_value()); |
| 1697 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1698 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1699 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 1700 | // 'null' -> false. |
| 1701 | __ cmp(reg, factory()->null_value()); |
| 1702 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1703 | } |
| 1704 | |
| 1705 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 1706 | // Smis: 0 -> false, all other -> true. |
| 1707 | __ test(reg, Operand(reg)); |
| 1708 | __ j(equal, false_label); |
| 1709 | __ JumpIfSmi(reg, true_label); |
| 1710 | } else if (expected.NeedsMap()) { |
| 1711 | // If we need a map later and have a Smi -> deopt. |
| 1712 | __ test(reg, Immediate(kSmiTagMask)); |
| 1713 | DeoptimizeIf(zero, instr->environment()); |
| 1714 | } |
| 1715 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1716 | Register map = no_reg; // Keep the compiler happy. |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1717 | if (expected.NeedsMap()) { |
| 1718 | map = ToRegister(instr->TempAt(0)); |
| 1719 | ASSERT(!map.is(reg)); |
| 1720 | __ mov(map, FieldOperand(reg, HeapObject::kMapOffset)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1721 | |
| 1722 | if (expected.CanBeUndetectable()) { |
| 1723 | // Undetectable -> false. |
| 1724 | __ test_b(FieldOperand(map, Map::kBitFieldOffset), |
| 1725 | 1 << Map::kIsUndetectable); |
| 1726 | __ j(not_zero, false_label); |
| 1727 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1728 | } |
| 1729 | |
| 1730 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 1731 | // spec object -> true. |
| 1732 | __ CmpInstanceType(map, FIRST_SPEC_OBJECT_TYPE); |
| 1733 | __ j(above_equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1734 | } |
| 1735 | |
| 1736 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 1737 | // String value -> false iff empty. |
| 1738 | Label not_string; |
| 1739 | __ CmpInstanceType(map, FIRST_NONSTRING_TYPE); |
| 1740 | __ j(above_equal, ¬_string, Label::kNear); |
| 1741 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
| 1742 | __ j(not_zero, true_label); |
| 1743 | __ jmp(false_label); |
| 1744 | __ bind(¬_string); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1745 | } |
| 1746 | |
| 1747 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1748 | // heap number -> false iff +0, -0, or NaN. |
| 1749 | Label not_heap_number; |
| 1750 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| 1751 | factory()->heap_number_map()); |
| 1752 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 1753 | __ fldz(); |
| 1754 | __ fld_d(FieldOperand(reg, HeapNumber::kValueOffset)); |
| 1755 | __ FCmp(); |
| 1756 | __ j(zero, false_label); |
| 1757 | __ jmp(true_label); |
| 1758 | __ bind(¬_heap_number); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1759 | } |
| 1760 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1761 | // We've seen something for the first time -> deopt. |
| 1762 | DeoptimizeIf(no_condition, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1763 | } |
| 1764 | } |
| 1765 | } |
| 1766 | |
| 1767 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1768 | void LCodeGen::EmitGoto(int block) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1769 | block = chunk_->LookupDestination(block); |
| 1770 | int next_block = GetNextEmittedBlock(current_block_); |
| 1771 | if (block != next_block) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1772 | __ jmp(chunk_->GetAssemblyLabel(block)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1773 | } |
| 1774 | } |
| 1775 | |
| 1776 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1777 | void LCodeGen::DoGoto(LGoto* instr) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1778 | EmitGoto(instr->block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1779 | } |
| 1780 | |
| 1781 | |
| 1782 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 1783 | Condition cond = no_condition; |
| 1784 | switch (op) { |
| 1785 | case Token::EQ: |
| 1786 | case Token::EQ_STRICT: |
| 1787 | cond = equal; |
| 1788 | break; |
| 1789 | case Token::LT: |
| 1790 | cond = is_unsigned ? below : less; |
| 1791 | break; |
| 1792 | case Token::GT: |
| 1793 | cond = is_unsigned ? above : greater; |
| 1794 | break; |
| 1795 | case Token::LTE: |
| 1796 | cond = is_unsigned ? below_equal : less_equal; |
| 1797 | break; |
| 1798 | case Token::GTE: |
| 1799 | cond = is_unsigned ? above_equal : greater_equal; |
| 1800 | break; |
| 1801 | case Token::IN: |
| 1802 | case Token::INSTANCEOF: |
| 1803 | default: |
| 1804 | UNREACHABLE(); |
| 1805 | } |
| 1806 | return cond; |
| 1807 | } |
| 1808 | |
| 1809 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1810 | void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1811 | LOperand* left = instr->InputAt(0); |
| 1812 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1813 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1814 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1815 | Condition cc = TokenToCondition(instr->op(), instr->is_double()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1816 | |
| 1817 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 1818 | // We can statically evaluate the comparison. |
| 1819 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 1820 | double right_val = ToDouble(LConstantOperand::cast(right)); |
| 1821 | int next_block = |
| 1822 | EvalComparison(instr->op(), left_val, right_val) ? true_block |
| 1823 | : false_block; |
| 1824 | EmitGoto(next_block); |
| 1825 | } else { |
| 1826 | if (instr->is_double()) { |
| 1827 | // Don't base result on EFLAGS when a NaN is involved. Instead |
| 1828 | // jump to the false block. |
| 1829 | __ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
| 1830 | __ j(parity_even, chunk_->GetAssemblyLabel(false_block)); |
| 1831 | } else { |
| 1832 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1833 | __ cmp(ToRegister(left), ToInteger32Immediate(right)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1834 | } else if (left->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1835 | __ cmp(ToOperand(right), ToInteger32Immediate(left)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1836 | // We transposed the operands. Reverse the condition. |
| 1837 | cc = ReverseCondition(cc); |
| 1838 | } else { |
| 1839 | __ cmp(ToRegister(left), ToOperand(right)); |
| 1840 | } |
| 1841 | } |
| 1842 | EmitBranch(true_block, false_block, cc); |
| 1843 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1844 | } |
| 1845 | |
| 1846 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1847 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1848 | Register left = ToRegister(instr->InputAt(0)); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1849 | Operand right = ToOperand(instr->InputAt(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1850 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1851 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1852 | |
| 1853 | __ cmp(left, Operand(right)); |
| 1854 | EmitBranch(true_block, false_block, equal); |
| 1855 | } |
| 1856 | |
| 1857 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1858 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
| 1859 | Register left = ToRegister(instr->InputAt(0)); |
| 1860 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1861 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1862 | |
| 1863 | __ cmp(left, instr->hydrogen()->right()); |
| 1864 | EmitBranch(true_block, false_block, equal); |
| 1865 | } |
| 1866 | |
| 1867 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1868 | void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1869 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1870 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1871 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1872 | // If the expression is known to be untagged or a smi, then it's definitely |
| 1873 | // not null, and it can't be a an undetectable object. |
| 1874 | if (instr->hydrogen()->representation().IsSpecialization() || |
| 1875 | instr->hydrogen()->type().IsSmi()) { |
| 1876 | EmitGoto(false_block); |
| 1877 | return; |
| 1878 | } |
| 1879 | |
| 1880 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1881 | Handle<Object> nil_value = instr->nil() == kNullValue ? |
| 1882 | factory()->null_value() : |
| 1883 | factory()->undefined_value(); |
| 1884 | __ cmp(reg, nil_value); |
| 1885 | if (instr->kind() == kStrictEquality) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1886 | EmitBranch(true_block, false_block, equal); |
| 1887 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1888 | Handle<Object> other_nil_value = instr->nil() == kNullValue ? |
| 1889 | factory()->undefined_value() : |
| 1890 | factory()->null_value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1891 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1892 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1893 | __ j(equal, true_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1894 | __ cmp(reg, other_nil_value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1895 | __ j(equal, true_label); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1896 | __ JumpIfSmi(reg, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1897 | // Check for undetectable objects by looking in the bit field in |
| 1898 | // the map. The object has already been smi checked. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1899 | Register scratch = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1900 | __ mov(scratch, FieldOperand(reg, HeapObject::kMapOffset)); |
| 1901 | __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset)); |
| 1902 | __ test(scratch, Immediate(1 << Map::kIsUndetectable)); |
| 1903 | EmitBranch(true_block, false_block, not_zero); |
| 1904 | } |
| 1905 | } |
| 1906 | |
| 1907 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1908 | Condition LCodeGen::EmitIsObject(Register input, |
| 1909 | Register temp1, |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1910 | Label* is_not_object, |
| 1911 | Label* is_object) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1912 | __ JumpIfSmi(input, is_not_object); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1913 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1914 | __ cmp(input, isolate()->factory()->null_value()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1915 | __ j(equal, is_object); |
| 1916 | |
| 1917 | __ mov(temp1, FieldOperand(input, HeapObject::kMapOffset)); |
| 1918 | // Undetectable objects behave like undefined. |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1919 | __ test_b(FieldOperand(temp1, Map::kBitFieldOffset), |
| 1920 | 1 << Map::kIsUndetectable); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1921 | __ j(not_zero, is_not_object); |
| 1922 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1923 | __ movzx_b(temp1, FieldOperand(temp1, Map::kInstanceTypeOffset)); |
| 1924 | __ cmp(temp1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1925 | __ j(below, is_not_object); |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1926 | __ cmp(temp1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1927 | return below_equal; |
| 1928 | } |
| 1929 | |
| 1930 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1931 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1932 | Register reg = ToRegister(instr->InputAt(0)); |
| 1933 | Register temp = ToRegister(instr->TempAt(0)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1934 | |
| 1935 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1936 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1937 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1938 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1939 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1940 | Condition true_cond = EmitIsObject(reg, temp, false_label, true_label); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1941 | |
| 1942 | EmitBranch(true_block, false_block, true_cond); |
| 1943 | } |
| 1944 | |
| 1945 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1946 | Condition LCodeGen::EmitIsString(Register input, |
| 1947 | Register temp1, |
| 1948 | Label* is_not_string) { |
| 1949 | __ JumpIfSmi(input, is_not_string); |
| 1950 | |
| 1951 | Condition cond = masm_->IsObjectStringType(input, temp1, temp1); |
| 1952 | |
| 1953 | return cond; |
| 1954 | } |
| 1955 | |
| 1956 | |
| 1957 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
| 1958 | Register reg = ToRegister(instr->InputAt(0)); |
| 1959 | Register temp = ToRegister(instr->TempAt(0)); |
| 1960 | |
| 1961 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1962 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1963 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1964 | |
| 1965 | Condition true_cond = EmitIsString(reg, temp, false_label); |
| 1966 | |
| 1967 | EmitBranch(true_block, false_block, true_cond); |
| 1968 | } |
| 1969 | |
| 1970 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1971 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1972 | Operand input = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1973 | |
| 1974 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1975 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1976 | |
| 1977 | __ test(input, Immediate(kSmiTagMask)); |
| 1978 | EmitBranch(true_block, false_block, zero); |
| 1979 | } |
| 1980 | |
| 1981 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1982 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
| 1983 | Register input = ToRegister(instr->InputAt(0)); |
| 1984 | Register temp = ToRegister(instr->TempAt(0)); |
| 1985 | |
| 1986 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1987 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1988 | |
| 1989 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1990 | __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1991 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 1992 | __ test_b(FieldOperand(temp, Map::kBitFieldOffset), |
| 1993 | 1 << Map::kIsUndetectable); |
| 1994 | EmitBranch(true_block, false_block, not_zero); |
| 1995 | } |
| 1996 | |
| 1997 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1998 | static Condition ComputeCompareCondition(Token::Value op) { |
| 1999 | switch (op) { |
| 2000 | case Token::EQ_STRICT: |
| 2001 | case Token::EQ: |
| 2002 | return equal; |
| 2003 | case Token::LT: |
| 2004 | return less; |
| 2005 | case Token::GT: |
| 2006 | return greater; |
| 2007 | case Token::LTE: |
| 2008 | return less_equal; |
| 2009 | case Token::GTE: |
| 2010 | return greater_equal; |
| 2011 | default: |
| 2012 | UNREACHABLE(); |
| 2013 | return no_condition; |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | |
| 2018 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 2019 | Token::Value op = instr->op(); |
| 2020 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2021 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2022 | |
| 2023 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
| 2024 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2025 | |
| 2026 | Condition condition = ComputeCompareCondition(op); |
| 2027 | __ test(eax, Operand(eax)); |
| 2028 | |
| 2029 | EmitBranch(true_block, false_block, condition); |
| 2030 | } |
| 2031 | |
| 2032 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2033 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2034 | InstanceType from = instr->from(); |
| 2035 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2036 | if (from == FIRST_TYPE) return to; |
| 2037 | ASSERT(from == to || to == LAST_TYPE); |
| 2038 | return from; |
| 2039 | } |
| 2040 | |
| 2041 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2042 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2043 | InstanceType from = instr->from(); |
| 2044 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2045 | if (from == to) return equal; |
| 2046 | if (to == LAST_TYPE) return above_equal; |
| 2047 | if (from == FIRST_TYPE) return below_equal; |
| 2048 | UNREACHABLE(); |
| 2049 | return equal; |
| 2050 | } |
| 2051 | |
| 2052 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2053 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2054 | Register input = ToRegister(instr->InputAt(0)); |
| 2055 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2056 | |
| 2057 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2058 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2059 | |
| 2060 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2061 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2062 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2063 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2064 | __ CmpObjectType(input, TestType(instr->hydrogen()), temp); |
| 2065 | EmitBranch(true_block, false_block, BranchCondition(instr->hydrogen())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2066 | } |
| 2067 | |
| 2068 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2069 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
| 2070 | Register input = ToRegister(instr->InputAt(0)); |
| 2071 | Register result = ToRegister(instr->result()); |
| 2072 | |
| 2073 | if (FLAG_debug_code) { |
| 2074 | __ AbortIfNotString(input); |
| 2075 | } |
| 2076 | |
| 2077 | __ mov(result, FieldOperand(input, String::kHashFieldOffset)); |
| 2078 | __ IndexFromHash(result, result); |
| 2079 | } |
| 2080 | |
| 2081 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2082 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 2083 | LHasCachedArrayIndexAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2084 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2085 | |
| 2086 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2087 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2088 | |
| 2089 | __ test(FieldOperand(input, String::kHashFieldOffset), |
| 2090 | Immediate(String::kContainsCachedArrayIndexMask)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2091 | EmitBranch(true_block, false_block, equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2092 | } |
| 2093 | |
| 2094 | |
| 2095 | // 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] | 2096 | // the temp registers, but not the input. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2097 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 2098 | Label* is_false, |
| 2099 | Handle<String>class_name, |
| 2100 | Register input, |
| 2101 | Register temp, |
| 2102 | Register temp2) { |
| 2103 | ASSERT(!input.is(temp)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2104 | ASSERT(!input.is(temp2)); |
| 2105 | ASSERT(!temp.is(temp2)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2106 | __ JumpIfSmi(input, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2107 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2108 | if (class_name->IsEqualTo(CStrVector("Function"))) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2109 | // Assuming the following assertions, we can use the same compares to test |
| 2110 | // for both being a function type and being in the object type range. |
| 2111 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2112 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2113 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 2114 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2115 | LAST_SPEC_OBJECT_TYPE - 1); |
| 2116 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 2117 | __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
| 2118 | __ j(below, is_false); |
| 2119 | __ j(equal, is_true); |
| 2120 | __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
| 2121 | __ j(equal, is_true); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2122 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2123 | // Faster code path to avoid two compares: subtract lower bound from the |
| 2124 | // actual type and do a signed compare with the width of the type range. |
| 2125 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2126 | __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2127 | __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2128 | __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2129 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2130 | __ j(above, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2131 | } |
| 2132 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2133 | // 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] | 2134 | // Check if the constructor in the map is a function. |
| 2135 | __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2136 | // Objects with a non-function constructor have class 'Object'. |
| 2137 | __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); |
| 2138 | if (class_name->IsEqualTo(CStrVector("Object"))) { |
| 2139 | __ j(not_equal, is_true); |
| 2140 | } else { |
| 2141 | __ j(not_equal, is_false); |
| 2142 | } |
| 2143 | |
| 2144 | // temp now contains the constructor function. Grab the |
| 2145 | // instance class name from there. |
| 2146 | __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 2147 | __ mov(temp, FieldOperand(temp, |
| 2148 | SharedFunctionInfo::kInstanceClassNameOffset)); |
| 2149 | // The class name we are testing against is a symbol because it's a literal. |
| 2150 | // The name in the constructor is a symbol because of the way the context is |
| 2151 | // booted. This routine isn't expected to work for random API-created |
| 2152 | // classes and it doesn't have to because you can't access it with natives |
| 2153 | // syntax. Since both sides are symbols it is sufficient to use an identity |
| 2154 | // comparison. |
| 2155 | __ cmp(temp, class_name); |
| 2156 | // End with the answer in the z flag. |
| 2157 | } |
| 2158 | |
| 2159 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2160 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2161 | Register input = ToRegister(instr->InputAt(0)); |
| 2162 | Register temp = ToRegister(instr->TempAt(0)); |
| 2163 | Register temp2 = ToRegister(instr->TempAt(1)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2164 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2165 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 2166 | |
| 2167 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 2168 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 2169 | |
| 2170 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 2171 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 2172 | |
| 2173 | EmitClassOfTest(true_label, false_label, class_name, input, temp, temp2); |
| 2174 | |
| 2175 | EmitBranch(true_block, false_block, equal); |
| 2176 | } |
| 2177 | |
| 2178 | |
| 2179 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2180 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2181 | int true_block = instr->true_block_id(); |
| 2182 | int false_block = instr->false_block_id(); |
| 2183 | |
| 2184 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map()); |
| 2185 | EmitBranch(true_block, false_block, equal); |
| 2186 | } |
| 2187 | |
| 2188 | |
| 2189 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2190 | // Object and function are in fixed registers defined by the stub. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2191 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2192 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2193 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2194 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2195 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2196 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2197 | __ j(zero, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2198 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2199 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2200 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2201 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2202 | __ bind(&done); |
| 2203 | } |
| 2204 | |
| 2205 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2206 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 2207 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 2208 | public: |
| 2209 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2210 | LInstanceOfKnownGlobal* instr) |
| 2211 | : LDeferredCode(codegen), instr_(instr) { } |
| 2212 | virtual void Generate() { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2213 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2214 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2215 | virtual LInstruction* instr() { return instr_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2216 | Label* map_check() { return &map_check_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2217 | private: |
| 2218 | LInstanceOfKnownGlobal* instr_; |
| 2219 | Label map_check_; |
| 2220 | }; |
| 2221 | |
| 2222 | DeferredInstanceOfKnownGlobal* deferred; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2223 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2224 | |
| 2225 | Label done, false_result; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2226 | Register object = ToRegister(instr->InputAt(1)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2227 | Register temp = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2228 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2229 | // A Smi is not an instance of anything. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2230 | __ JumpIfSmi(object, &false_result); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2231 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2232 | // 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] | 2233 | // hole value will be patched to the last map/result pair generated by the |
| 2234 | // instanceof stub. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2235 | Label cache_miss; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2236 | Register map = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2237 | __ mov(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2238 | __ bind(deferred->map_check()); // Label for calculating code patching. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2239 | Handle<JSGlobalPropertyCell> cache_cell = |
| 2240 | factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
| 2241 | __ cmp(map, Operand::Cell(cache_cell)); // Patched to cached map. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2242 | __ j(not_equal, &cache_miss, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2243 | __ 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] | 2244 | __ jmp(&done); |
| 2245 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2246 | // The inlined call site cache did not match. Check for null and string |
| 2247 | // before calling the deferred code. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2248 | __ bind(&cache_miss); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2249 | // Null is not an instance of anything. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2250 | __ cmp(object, factory()->null_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2251 | __ j(equal, &false_result); |
| 2252 | |
| 2253 | // String values are not instances of anything. |
| 2254 | Condition is_string = masm_->IsObjectStringType(object, temp, temp); |
| 2255 | __ j(is_string, &false_result); |
| 2256 | |
| 2257 | // Go to the deferred code. |
| 2258 | __ jmp(deferred->entry()); |
| 2259 | |
| 2260 | __ bind(&false_result); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2261 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2262 | |
| 2263 | // Here result has either true or false. Deferred code also produces true or |
| 2264 | // false object. |
| 2265 | __ bind(deferred->exit()); |
| 2266 | __ bind(&done); |
| 2267 | } |
| 2268 | |
| 2269 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2270 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2271 | Label* map_check) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2272 | PushSafepointRegistersScope scope(this); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2273 | |
| 2274 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2275 | flags = static_cast<InstanceofStub::Flags>( |
| 2276 | flags | InstanceofStub::kArgsInRegisters); |
| 2277 | flags = static_cast<InstanceofStub::Flags>( |
| 2278 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2279 | flags = static_cast<InstanceofStub::Flags>( |
| 2280 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2281 | InstanceofStub stub(flags); |
| 2282 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2283 | // Get the temp register reserved by the instruction. This needs to be a |
| 2284 | // register which is pushed last by PushSafepointRegisters as top of the |
| 2285 | // stack is used to pass the offset to the location of the map check to |
| 2286 | // the stub. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2287 | Register temp = ToRegister(instr->TempAt(0)); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2288 | ASSERT(MacroAssembler::SafepointRegisterStackIndex(temp) == 0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2289 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2290 | static const int kAdditionalDelta = 13; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2291 | int delta = masm_->SizeOfCodeGeneratedSince(map_check) + kAdditionalDelta; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2292 | __ mov(temp, Immediate(delta)); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2293 | __ StoreToSafepointRegisterSlot(temp, temp); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2294 | CallCodeGeneric(stub.GetCode(), |
| 2295 | RelocInfo::CODE_TARGET, |
| 2296 | instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2297 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2298 | // Get the deoptimization index of the LLazyBailout-environment that |
| 2299 | // corresponds to this instruction. |
| 2300 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2301 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
| 2302 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2303 | // 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] | 2304 | __ StoreToSafepointRegisterSlot(eax, eax); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2305 | } |
| 2306 | |
| 2307 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2308 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2309 | Token::Value op = instr->op(); |
| 2310 | |
| 2311 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2312 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2313 | |
| 2314 | Condition condition = ComputeCompareCondition(op); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2315 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2316 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2317 | __ j(condition, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2318 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2319 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2320 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2321 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2322 | __ bind(&done); |
| 2323 | } |
| 2324 | |
| 2325 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2326 | void LCodeGen::DoReturn(LReturn* instr) { |
| 2327 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2328 | // Preserve the return value on the stack and rely on the runtime call |
| 2329 | // to return the value in the same register. We're leaving the code |
| 2330 | // managed by the register allocator and tearing down the frame, it's |
| 2331 | // safe to write to the context register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2332 | __ push(eax); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2333 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2334 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2335 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2336 | if (dynamic_frame_alignment_) { |
| 2337 | // Fetch the state of the dynamic frame alignment. |
| 2338 | __ mov(edx, Operand(ebp, |
| 2339 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); |
| 2340 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2341 | __ mov(esp, ebp); |
| 2342 | __ pop(ebp); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2343 | if (dynamic_frame_alignment_) { |
| 2344 | Label no_padding; |
| 2345 | __ cmp(edx, Immediate(kNoAlignmentPadding)); |
| 2346 | __ j(equal, &no_padding); |
| 2347 | if (FLAG_debug_code) { |
| 2348 | __ cmp(Operand(esp, (GetParameterCount() + 2) * kPointerSize), |
| 2349 | Immediate(kAlignmentZapValue)); |
| 2350 | __ Assert(equal, "expected alignment marker"); |
| 2351 | } |
| 2352 | __ Ret((GetParameterCount() + 2) * kPointerSize, ecx); |
| 2353 | __ bind(&no_padding); |
| 2354 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2355 | __ Ret((GetParameterCount() + 1) * kPointerSize, ecx); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2356 | } |
| 2357 | |
| 2358 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2359 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2360 | Register result = ToRegister(instr->result()); |
| 2361 | __ mov(result, Operand::Cell(instr->hydrogen()->cell())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2362 | if (instr->hydrogen()->RequiresHoleCheck()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2363 | __ cmp(result, factory()->the_hole_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2364 | DeoptimizeIf(equal, instr->environment()); |
| 2365 | } |
| 2366 | } |
| 2367 | |
| 2368 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2369 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2370 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2371 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2372 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2373 | |
| 2374 | __ mov(ecx, instr->name()); |
| 2375 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET : |
| 2376 | RelocInfo::CODE_TARGET_CONTEXT; |
| 2377 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2378 | CallCode(ic, mode, instr); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2379 | } |
| 2380 | |
| 2381 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2382 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2383 | Register value = ToRegister(instr->value()); |
| 2384 | Handle<JSGlobalPropertyCell> cell_handle = instr->hydrogen()->cell(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2385 | |
| 2386 | // If the cell we are storing to contains the hole it could have |
| 2387 | // been deleted from the property dictionary. In that case, we need |
| 2388 | // to update the property details in the property dictionary to mark |
| 2389 | // it as no longer deleted. We deoptimize in that case. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2390 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2391 | __ cmp(Operand::Cell(cell_handle), factory()->the_hole_value()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2392 | DeoptimizeIf(equal, instr->environment()); |
| 2393 | } |
| 2394 | |
| 2395 | // Store the value. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2396 | __ mov(Operand::Cell(cell_handle), value); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2397 | // Cells are always rescanned, so no write barrier here. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2398 | } |
| 2399 | |
| 2400 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2401 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2402 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 2403 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
| 2404 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 2405 | |
| 2406 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2407 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2408 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2409 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2410 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2411 | } |
| 2412 | |
| 2413 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2414 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2415 | Register context = ToRegister(instr->context()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2416 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2417 | __ mov(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2418 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2419 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2420 | __ cmp(result, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2421 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2422 | DeoptimizeIf(equal, instr->environment()); |
| 2423 | } else { |
| 2424 | Label is_not_hole; |
| 2425 | __ j(not_equal, &is_not_hole, Label::kNear); |
| 2426 | __ mov(result, factory()->undefined_value()); |
| 2427 | __ bind(&is_not_hole); |
| 2428 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2429 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2430 | } |
| 2431 | |
| 2432 | |
| 2433 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2434 | Register context = ToRegister(instr->context()); |
| 2435 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2436 | |
| 2437 | Label skip_assignment; |
| 2438 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2439 | Operand target = ContextOperand(context, instr->slot_index()); |
| 2440 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2441 | __ cmp(target, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2442 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2443 | DeoptimizeIf(equal, instr->environment()); |
| 2444 | } else { |
| 2445 | __ j(not_equal, &skip_assignment, Label::kNear); |
| 2446 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2447 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2448 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2449 | __ mov(target, value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2450 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 2451 | HType type = instr->hydrogen()->value()->type(); |
| 2452 | SmiCheck check_needed = |
| 2453 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2454 | Register temp = ToRegister(instr->TempAt(0)); |
| 2455 | int offset = Context::SlotOffset(instr->slot_index()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2456 | __ RecordWriteContextSlot(context, |
| 2457 | offset, |
| 2458 | value, |
| 2459 | temp, |
| 2460 | kSaveFPRegs, |
| 2461 | EMIT_REMEMBERED_SET, |
| 2462 | check_needed); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2463 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2464 | |
| 2465 | __ bind(&skip_assignment); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2466 | } |
| 2467 | |
| 2468 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2469 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2470 | Register object = ToRegister(instr->object()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2471 | Register result = ToRegister(instr->result()); |
| 2472 | if (instr->hydrogen()->is_in_object()) { |
| 2473 | __ mov(result, FieldOperand(object, instr->hydrogen()->offset())); |
| 2474 | } else { |
| 2475 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2476 | __ mov(result, FieldOperand(result, instr->hydrogen()->offset())); |
| 2477 | } |
| 2478 | } |
| 2479 | |
| 2480 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2481 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2482 | Register object, |
| 2483 | Handle<Map> type, |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2484 | Handle<String> name, |
| 2485 | LEnvironment* env) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2486 | LookupResult lookup(isolate()); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 2487 | type->LookupDescriptor(NULL, *name, &lookup); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2488 | ASSERT(lookup.IsFound() || lookup.IsCacheable()); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2489 | if (lookup.IsField()) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2490 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2491 | int offset = index * kPointerSize; |
| 2492 | if (index < 0) { |
| 2493 | // Negative property indices are in-object properties, indexed |
| 2494 | // from the end of the fixed part of the object. |
| 2495 | __ mov(result, FieldOperand(object, offset + type->instance_size())); |
| 2496 | } else { |
| 2497 | // Non-negative property indices are in the properties array. |
| 2498 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2499 | __ mov(result, FieldOperand(result, offset + FixedArray::kHeaderSize)); |
| 2500 | } |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2501 | } else if (lookup.IsConstantFunction()) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2502 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2503 | __ LoadHeapObject(result, function); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2504 | } else { |
| 2505 | // Negative lookup. |
| 2506 | // Check prototypes. |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2507 | Handle<HeapObject> current(HeapObject::cast((*type)->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2508 | Heap* heap = type->GetHeap(); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2509 | while (*current != heap->null_value()) { |
| 2510 | __ LoadHeapObject(result, current); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2511 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2512 | Handle<Map>(current->map())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2513 | DeoptimizeIf(not_equal, env); |
yangguo@chromium.org | d2899aa | 2012-06-21 11:16:20 +0000 | [diff] [blame] | 2514 | current = |
| 2515 | Handle<HeapObject>(HeapObject::cast(current->map()->prototype())); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2516 | } |
| 2517 | __ mov(result, factory()->undefined_value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2518 | } |
| 2519 | } |
| 2520 | |
| 2521 | |
| 2522 | void LCodeGen::EmitPushTaggedOperand(LOperand* operand) { |
| 2523 | ASSERT(!operand->IsDoubleRegister()); |
| 2524 | if (operand->IsConstantOperand()) { |
| 2525 | Handle<Object> object = ToHandle(LConstantOperand::cast(operand)); |
| 2526 | if (object->IsSmi()) { |
| 2527 | __ Push(Handle<Smi>::cast(object)); |
| 2528 | } else { |
| 2529 | __ PushHeapObject(Handle<HeapObject>::cast(object)); |
| 2530 | } |
| 2531 | } else if (operand->IsRegister()) { |
| 2532 | __ push(ToRegister(operand)); |
| 2533 | } else { |
| 2534 | __ push(ToOperand(operand)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2535 | } |
| 2536 | } |
| 2537 | |
| 2538 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2539 | // Check for cases where EmitLoadFieldOrConstantFunction needs to walk the |
| 2540 | // prototype chain, which causes unbounded code generation. |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2541 | static bool CompactEmit(SmallMapList* list, |
| 2542 | Handle<String> name, |
| 2543 | int i, |
| 2544 | Isolate* isolate) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2545 | Handle<Map> map = list->at(i); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2546 | // If the map has ElementsKind transitions, we will generate map checks |
| 2547 | // for each kind in __ CompareMap(..., ALLOW_ELEMENTS_TRANSITION_MAPS). |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2548 | if (map->HasElementsTransition()) return false; |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2549 | LookupResult lookup(isolate); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 2550 | map->LookupDescriptor(NULL, *name, &lookup); |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 2551 | return lookup.IsField() || lookup.IsConstantFunction(); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2552 | } |
| 2553 | |
| 2554 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2555 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2556 | Register object = ToRegister(instr->object()); |
| 2557 | Register result = ToRegister(instr->result()); |
| 2558 | |
| 2559 | int map_count = instr->hydrogen()->types()->length(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2560 | bool need_generic = instr->hydrogen()->need_generic(); |
| 2561 | |
| 2562 | if (map_count == 0 && !need_generic) { |
| 2563 | DeoptimizeIf(no_condition, instr->environment()); |
| 2564 | return; |
| 2565 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2566 | Handle<String> name = instr->hydrogen()->name(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2567 | Label done; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2568 | bool all_are_compact = true; |
| 2569 | for (int i = 0; i < map_count; ++i) { |
| 2570 | if (!CompactEmit(instr->hydrogen()->types(), name, i, isolate())) { |
| 2571 | all_are_compact = false; |
| 2572 | break; |
| 2573 | } |
| 2574 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2575 | for (int i = 0; i < map_count; ++i) { |
| 2576 | bool last = (i == map_count - 1); |
| 2577 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2578 | Label check_passed; |
| 2579 | __ CompareMap(object, map, &check_passed, ALLOW_ELEMENT_TRANSITION_MAPS); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2580 | if (last && !need_generic) { |
| 2581 | DeoptimizeIf(not_equal, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2582 | __ bind(&check_passed); |
| 2583 | EmitLoadFieldOrConstantFunction( |
| 2584 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2585 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2586 | Label next; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2587 | bool compact = all_are_compact ? true : |
| 2588 | CompactEmit(instr->hydrogen()->types(), name, i, isolate()); |
| 2589 | __ j(not_equal, &next, compact ? Label::kNear : Label::kFar); |
| 2590 | __ bind(&check_passed); |
| 2591 | EmitLoadFieldOrConstantFunction( |
| 2592 | result, object, map, name, instr->environment()); |
| 2593 | __ jmp(&done, all_are_compact ? Label::kNear : Label::kFar); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2594 | __ bind(&next); |
| 2595 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2596 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2597 | if (need_generic) { |
| 2598 | __ mov(ecx, name); |
| 2599 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2600 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2601 | } |
| 2602 | __ bind(&done); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2603 | } |
| 2604 | |
| 2605 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2606 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2607 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2608 | ASSERT(ToRegister(instr->object()).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2609 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2610 | |
| 2611 | __ mov(ecx, instr->name()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2612 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2613 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2614 | } |
| 2615 | |
| 2616 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2617 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2618 | Register function = ToRegister(instr->function()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2619 | Register temp = ToRegister(instr->TempAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2620 | Register result = ToRegister(instr->result()); |
| 2621 | |
| 2622 | // Check that the function really is a function. |
| 2623 | __ CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2624 | DeoptimizeIf(not_equal, instr->environment()); |
| 2625 | |
| 2626 | // Check whether the function has an instance prototype. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2627 | Label non_instance; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2628 | __ test_b(FieldOperand(result, Map::kBitFieldOffset), |
| 2629 | 1 << Map::kHasNonInstancePrototype); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2630 | __ j(not_zero, &non_instance, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2631 | |
| 2632 | // Get the prototype or initial map from the function. |
| 2633 | __ mov(result, |
| 2634 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2635 | |
| 2636 | // Check that the function has a prototype or an initial map. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2637 | __ cmp(Operand(result), Immediate(factory()->the_hole_value())); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2638 | DeoptimizeIf(equal, instr->environment()); |
| 2639 | |
| 2640 | // 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] | 2641 | Label done; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2642 | __ CmpObjectType(result, MAP_TYPE, temp); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2643 | __ j(not_equal, &done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2644 | |
| 2645 | // Get the prototype from the initial map. |
| 2646 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2647 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2648 | |
| 2649 | // Non-instance prototype: Fetch prototype from constructor field |
| 2650 | // in the function's map. |
| 2651 | __ bind(&non_instance); |
| 2652 | __ mov(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2653 | |
| 2654 | // All done. |
| 2655 | __ bind(&done); |
| 2656 | } |
| 2657 | |
| 2658 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2659 | void LCodeGen::DoLoadElements(LLoadElements* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2660 | Register result = ToRegister(instr->result()); |
| 2661 | Register input = ToRegister(instr->InputAt(0)); |
| 2662 | __ mov(result, FieldOperand(input, JSObject::kElementsOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2663 | if (FLAG_debug_code) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2664 | Label done, ok, fail; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2665 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2666 | Immediate(factory()->fixed_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2667 | __ j(equal, &done, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2668 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2669 | Immediate(factory()->fixed_cow_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2670 | __ j(equal, &done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2671 | Register temp((result.is(eax)) ? ebx : eax); |
| 2672 | __ push(temp); |
| 2673 | __ mov(temp, FieldOperand(result, HeapObject::kMapOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2674 | __ movzx_b(temp, FieldOperand(temp, Map::kBitField2Offset)); |
| 2675 | __ and_(temp, Map::kElementsKindMask); |
| 2676 | __ shr(temp, Map::kElementsKindShift); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2677 | __ cmp(temp, GetInitialFastElementsKind()); |
| 2678 | __ j(less, &fail, Label::kNear); |
| 2679 | __ cmp(temp, TERMINAL_FAST_ELEMENTS_KIND); |
| 2680 | __ j(less_equal, &ok, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2681 | __ cmp(temp, FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2682 | __ j(less, &fail, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2683 | __ cmp(temp, LAST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2684 | __ j(less_equal, &ok, Label::kNear); |
| 2685 | __ bind(&fail); |
| 2686 | __ Abort("Check for fast or external elements failed."); |
| 2687 | __ bind(&ok); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2688 | __ pop(temp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2689 | __ bind(&done); |
| 2690 | } |
| 2691 | } |
| 2692 | |
| 2693 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2694 | void LCodeGen::DoLoadExternalArrayPointer( |
| 2695 | LLoadExternalArrayPointer* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2696 | Register result = ToRegister(instr->result()); |
| 2697 | Register input = ToRegister(instr->InputAt(0)); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2698 | __ mov(result, FieldOperand(input, |
| 2699 | ExternalArray::kExternalPointerOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2700 | } |
| 2701 | |
| 2702 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2703 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 2704 | Register arguments = ToRegister(instr->arguments()); |
| 2705 | Register length = ToRegister(instr->length()); |
| 2706 | Operand index = ToOperand(instr->index()); |
| 2707 | Register result = ToRegister(instr->result()); |
| 2708 | |
| 2709 | __ sub(length, index); |
| 2710 | DeoptimizeIf(below_equal, instr->environment()); |
| 2711 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2712 | // There are two words between the frame pointer and the last argument. |
| 2713 | // Subtracting from length accounts for one of them add one more. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2714 | __ mov(result, Operand(arguments, length, times_4, kPointerSize)); |
| 2715 | } |
| 2716 | |
| 2717 | |
| 2718 | void LCodeGen::DoLoadKeyedFastElement(LLoadKeyedFastElement* instr) { |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2719 | Register result = ToRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2720 | |
| 2721 | // Load the result. |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2722 | __ mov(result, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2723 | BuildFastArrayOperand(instr->elements(), |
| 2724 | instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2725 | instr->hydrogen()->key()->representation(), |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2726 | FAST_ELEMENTS, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2727 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 2728 | instr->additional_index())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2729 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2730 | // Check for the hole value. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2731 | if (instr->hydrogen()->RequiresHoleCheck()) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 2732 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 2733 | __ test(result, Immediate(kSmiTagMask)); |
| 2734 | DeoptimizeIf(not_equal, instr->environment()); |
| 2735 | } else { |
| 2736 | __ cmp(result, factory()->the_hole_value()); |
| 2737 | DeoptimizeIf(equal, instr->environment()); |
| 2738 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2739 | } |
| 2740 | } |
| 2741 | |
| 2742 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2743 | void LCodeGen::DoLoadKeyedFastDoubleElement( |
| 2744 | LLoadKeyedFastDoubleElement* instr) { |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2745 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 2746 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2747 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2748 | int offset = FixedDoubleArray::kHeaderSize - kHeapObjectTag + |
| 2749 | sizeof(kHoleNanLower32); |
| 2750 | Operand hole_check_operand = BuildFastArrayOperand( |
| 2751 | instr->elements(), instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2752 | instr->hydrogen()->key()->representation(), |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2753 | FAST_DOUBLE_ELEMENTS, |
| 2754 | offset, |
| 2755 | instr->additional_index()); |
| 2756 | __ cmp(hole_check_operand, Immediate(kHoleNanUpper32)); |
| 2757 | DeoptimizeIf(equal, instr->environment()); |
| 2758 | } |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2759 | |
| 2760 | Operand double_load_operand = BuildFastArrayOperand( |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2761 | instr->elements(), |
| 2762 | instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2763 | instr->hydrogen()->key()->representation(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2764 | FAST_DOUBLE_ELEMENTS, |
| 2765 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 2766 | instr->additional_index()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2767 | __ movdbl(result, double_load_operand); |
| 2768 | } |
| 2769 | |
| 2770 | |
| 2771 | Operand LCodeGen::BuildFastArrayOperand( |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2772 | LOperand* elements_pointer, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2773 | LOperand* key, |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2774 | Representation key_representation, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2775 | ElementsKind elements_kind, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2776 | uint32_t offset, |
| 2777 | uint32_t additional_index) { |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2778 | Register elements_pointer_reg = ToRegister(elements_pointer); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2779 | int shift_size = ElementsKindToShiftSize(elements_kind); |
jkummerow@chromium.org | 000f7fb | 2012-08-01 11:14:42 +0000 | [diff] [blame] | 2780 | // Even though the HLoad/StoreKeyedFastElement instructions force the input |
| 2781 | // representation for the key to be an integer, the input gets replaced during |
| 2782 | // bound check elimination with the index argument to the bounds check, which |
| 2783 | // can be tagged, so that case must be handled here, too. |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2784 | if (key_representation.IsTagged() && (shift_size >= 1)) { |
| 2785 | shift_size -= kSmiTagSize; |
| 2786 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2787 | if (key->IsConstantOperand()) { |
| 2788 | int constant_value = ToInteger32(LConstantOperand::cast(key)); |
| 2789 | if (constant_value & 0xF0000000) { |
| 2790 | Abort("array index constant value too big"); |
| 2791 | } |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2792 | return Operand(elements_pointer_reg, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2793 | ((constant_value + additional_index) << shift_size) |
| 2794 | + offset); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2795 | } else { |
| 2796 | ScaleFactor scale_factor = static_cast<ScaleFactor>(shift_size); |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2797 | return Operand(elements_pointer_reg, |
| 2798 | ToRegister(key), |
| 2799 | scale_factor, |
| 2800 | offset + (additional_index << shift_size)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2801 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2802 | } |
| 2803 | |
| 2804 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2805 | void LCodeGen::DoLoadKeyedSpecializedArrayElement( |
| 2806 | LLoadKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2807 | ElementsKind elements_kind = instr->elements_kind(); |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 2808 | LOperand* key = instr->key(); |
| 2809 | if (!key->IsConstantOperand() && |
| 2810 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 2811 | elements_kind)) { |
| 2812 | __ SmiUntag(ToRegister(key)); |
| 2813 | } |
| 2814 | Operand operand(BuildFastArrayOperand( |
| 2815 | instr->external_pointer(), |
| 2816 | key, |
| 2817 | instr->hydrogen()->key()->representation(), |
| 2818 | elements_kind, |
| 2819 | 0, |
| 2820 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2821 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2822 | XMMRegister result(ToDoubleRegister(instr->result())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2823 | __ movss(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2824 | __ cvtss2sd(result, result); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2825 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2826 | __ movdbl(ToDoubleRegister(instr->result()), operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2827 | } else { |
| 2828 | Register result(ToRegister(instr->result())); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2829 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2830 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2831 | __ movsx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2832 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2833 | case EXTERNAL_PIXEL_ELEMENTS: |
| 2834 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2835 | __ movzx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2836 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2837 | case EXTERNAL_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2838 | __ movsx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2839 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2840 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2841 | __ movzx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2842 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2843 | case EXTERNAL_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2844 | __ mov(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2845 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2846 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2847 | __ mov(result, operand); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2848 | if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) { |
| 2849 | __ test(result, Operand(result)); |
| 2850 | DeoptimizeIf(negative, instr->environment()); |
| 2851 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2852 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2853 | case EXTERNAL_FLOAT_ELEMENTS: |
| 2854 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2855 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2856 | case FAST_ELEMENTS: |
| 2857 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2858 | case FAST_HOLEY_SMI_ELEMENTS: |
| 2859 | case FAST_HOLEY_ELEMENTS: |
| 2860 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2861 | case DICTIONARY_ELEMENTS: |
| 2862 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2863 | UNREACHABLE(); |
| 2864 | break; |
| 2865 | } |
| 2866 | } |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2867 | } |
| 2868 | |
| 2869 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2870 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2871 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2872 | ASSERT(ToRegister(instr->object()).is(edx)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2873 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2874 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2875 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2876 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2877 | } |
| 2878 | |
| 2879 | |
| 2880 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 2881 | Register result = ToRegister(instr->result()); |
| 2882 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2883 | if (instr->hydrogen()->from_inlined()) { |
| 2884 | __ lea(result, Operand(esp, -2 * kPointerSize)); |
| 2885 | } else { |
| 2886 | // Check for arguments adapter frame. |
| 2887 | Label done, adapted; |
| 2888 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2889 | __ mov(result, Operand(result, StandardFrameConstants::kContextOffset)); |
| 2890 | __ cmp(Operand(result), |
| 2891 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2892 | __ j(equal, &adapted, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2893 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2894 | // No arguments adaptor frame. |
| 2895 | __ mov(result, Operand(ebp)); |
| 2896 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2897 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2898 | // Arguments adaptor frame present. |
| 2899 | __ bind(&adapted); |
| 2900 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2901 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2902 | // Result is the frame pointer for the frame if not adapted and for the real |
| 2903 | // frame below the adaptor frame if adapted. |
| 2904 | __ bind(&done); |
| 2905 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2906 | } |
| 2907 | |
| 2908 | |
| 2909 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2910 | Operand elem = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2911 | Register result = ToRegister(instr->result()); |
| 2912 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2913 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2914 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2915 | // If no arguments adaptor frame the number of arguments is fixed. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2916 | __ cmp(ebp, elem); |
| 2917 | __ mov(result, Immediate(scope()->num_parameters())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2918 | __ j(equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2919 | |
| 2920 | // Arguments adaptor frame present. Get argument length from there. |
| 2921 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2922 | __ mov(result, Operand(result, |
| 2923 | ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2924 | __ SmiUntag(result); |
| 2925 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2926 | // Argument length is in result register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2927 | __ bind(&done); |
| 2928 | } |
| 2929 | |
| 2930 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 2931 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2932 | Register receiver = ToRegister(instr->receiver()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2933 | Register function = ToRegister(instr->function()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2934 | Register scratch = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2935 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2936 | // If the receiver is null or undefined, we have to pass the global |
| 2937 | // object as a receiver to normal functions. Values have to be |
| 2938 | // passed unchanged to builtins and strict-mode functions. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2939 | Label global_object, receiver_ok; |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2940 | |
| 2941 | // Do not transform the receiver to object for strict mode |
| 2942 | // functions. |
| 2943 | __ mov(scratch, |
| 2944 | FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2945 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
| 2946 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 2947 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2948 | |
| 2949 | // Do not transform the receiver to object for builtins. |
| 2950 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
| 2951 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
| 2952 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2953 | |
| 2954 | // Normal function. Replace undefined or null with global receiver. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2955 | __ cmp(receiver, factory()->null_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2956 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2957 | __ cmp(receiver, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2958 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2959 | |
| 2960 | // The receiver should be a JS object. |
| 2961 | __ test(receiver, Immediate(kSmiTagMask)); |
| 2962 | DeoptimizeIf(equal, instr->environment()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2963 | __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2964 | DeoptimizeIf(below, instr->environment()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2965 | __ jmp(&receiver_ok, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2966 | |
| 2967 | __ bind(&global_object); |
| 2968 | // TODO(kmillikin): We have a hydrogen value for the global object. See |
| 2969 | // if it's better to use it than to explicitly fetch it from the context |
| 2970 | // here. |
| 2971 | __ mov(receiver, Operand(ebp, StandardFrameConstants::kContextOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 2972 | __ mov(receiver, ContextOperand(receiver, Context::GLOBAL_OBJECT_INDEX)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2973 | __ mov(receiver, |
| 2974 | FieldOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2975 | __ bind(&receiver_ok); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 2976 | } |
| 2977 | |
| 2978 | |
| 2979 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 2980 | Register receiver = ToRegister(instr->receiver()); |
| 2981 | Register function = ToRegister(instr->function()); |
| 2982 | Register length = ToRegister(instr->length()); |
| 2983 | Register elements = ToRegister(instr->elements()); |
| 2984 | ASSERT(receiver.is(eax)); // Used for parameter count. |
| 2985 | ASSERT(function.is(edi)); // Required by InvokeFunction. |
| 2986 | ASSERT(ToRegister(instr->result()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2987 | |
| 2988 | // Copy the arguments to this function possibly from the |
| 2989 | // adaptor frame below it. |
| 2990 | const uint32_t kArgumentsLimit = 1 * KB; |
| 2991 | __ cmp(length, kArgumentsLimit); |
| 2992 | DeoptimizeIf(above, instr->environment()); |
| 2993 | |
| 2994 | __ push(receiver); |
| 2995 | __ mov(receiver, length); |
| 2996 | |
| 2997 | // Loop through the arguments pushing them onto the execution |
| 2998 | // stack. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2999 | Label invoke, loop; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3000 | // length is a small non-negative integer, due to the test above. |
| 3001 | __ test(length, Operand(length)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3002 | __ j(zero, &invoke, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3003 | __ bind(&loop); |
| 3004 | __ push(Operand(elements, length, times_pointer_size, 1 * kPointerSize)); |
| 3005 | __ dec(length); |
| 3006 | __ j(not_zero, &loop); |
| 3007 | |
| 3008 | // Invoke the function. |
| 3009 | __ bind(&invoke); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 3010 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3011 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3012 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3013 | SafepointGenerator safepoint_generator( |
| 3014 | this, pointers, Safepoint::kLazyDeopt); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3015 | ParameterCount actual(eax); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3016 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 3017 | safepoint_generator, CALL_AS_METHOD); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3018 | } |
| 3019 | |
| 3020 | |
| 3021 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3022 | LOperand* argument = instr->InputAt(0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3023 | EmitPushTaggedOperand(argument); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3024 | } |
| 3025 | |
| 3026 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3027 | void LCodeGen::DoDrop(LDrop* instr) { |
| 3028 | __ Drop(instr->count()); |
| 3029 | } |
| 3030 | |
| 3031 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3032 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 3033 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 3034 | __ mov(result, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3035 | } |
| 3036 | |
| 3037 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3038 | void LCodeGen::DoContext(LContext* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3039 | Register result = ToRegister(instr->result()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3040 | __ mov(result, Operand(ebp, StandardFrameConstants::kContextOffset)); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3041 | } |
| 3042 | |
| 3043 | |
| 3044 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 3045 | Register context = ToRegister(instr->context()); |
| 3046 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3047 | __ mov(result, |
| 3048 | Operand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3049 | } |
| 3050 | |
| 3051 | |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 3052 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
| 3053 | ASSERT(ToRegister(instr->InputAt(0)).is(esi)); |
| 3054 | __ push(esi); // The context is the first argument. |
| 3055 | __ push(Immediate(instr->hydrogen()->pairs())); |
| 3056 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags()))); |
| 3057 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 3058 | } |
| 3059 | |
| 3060 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3061 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
| 3062 | Register context = ToRegister(instr->context()); |
| 3063 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3064 | __ mov(result, |
| 3065 | Operand(context, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3066 | } |
| 3067 | |
| 3068 | |
| 3069 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3070 | Register global = ToRegister(instr->global()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3071 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3072 | __ mov(result, FieldOperand(global, GlobalObject::kGlobalReceiverOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3073 | } |
| 3074 | |
| 3075 | |
| 3076 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
| 3077 | int arity, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3078 | LInstruction* instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3079 | CallKind call_kind, |
| 3080 | EDIState edi_state) { |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3081 | bool can_invoke_directly = !function->NeedsArgumentsAdaption() || |
| 3082 | function->shared()->formal_parameter_count() == arity; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3083 | |
| 3084 | LPointerMap* pointers = instr->pointer_map(); |
| 3085 | RecordPosition(pointers->position()); |
| 3086 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3087 | if (can_invoke_directly) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3088 | if (edi_state == EDI_UNINITIALIZED) { |
| 3089 | __ LoadHeapObject(edi, function); |
| 3090 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3091 | |
verwaest@chromium.org | b6d052d | 2012-07-27 08:03:27 +0000 | [diff] [blame] | 3092 | // Change context. |
| 3093 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 3094 | |
| 3095 | // Set eax to arguments count if adaption is not needed. Assumes that eax |
| 3096 | // is available to write to at this point. |
| 3097 | if (!function->NeedsArgumentsAdaption()) { |
| 3098 | __ mov(eax, arity); |
| 3099 | } |
| 3100 | |
| 3101 | // Invoke function directly. |
| 3102 | __ SetCallKind(ecx, call_kind); |
| 3103 | if (*function == *info()->closure()) { |
| 3104 | __ CallSelf(); |
| 3105 | } else { |
| 3106 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 3107 | } |
| 3108 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3109 | } else { |
| 3110 | // We need to adapt arguments. |
| 3111 | SafepointGenerator generator( |
| 3112 | this, pointers, Safepoint::kLazyDeopt); |
| 3113 | ParameterCount count(arity); |
| 3114 | __ InvokeFunction(function, count, CALL_FUNCTION, generator, call_kind); |
| 3115 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 3120 | ASSERT(ToRegister(instr->result()).is(eax)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3121 | CallKnownFunction(instr->function(), |
| 3122 | instr->arity(), |
| 3123 | instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3124 | CALL_AS_METHOD, |
| 3125 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3126 | } |
| 3127 | |
| 3128 | |
| 3129 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3130 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3131 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3132 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3133 | DeoptimizeIf(not_equal, instr->environment()); |
| 3134 | |
| 3135 | Label done; |
| 3136 | Register tmp = input_reg.is(eax) ? ecx : eax; |
| 3137 | Register tmp2 = tmp.is(ecx) ? edx : input_reg.is(ecx) ? edx : ecx; |
| 3138 | |
| 3139 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3140 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3141 | |
| 3142 | Label negative; |
| 3143 | __ mov(tmp, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3144 | // Check the sign of the argument. If the argument is positive, just |
| 3145 | // return it. We do not need to patch the stack since |input| and |
| 3146 | // |result| are the same register and |input| will be restored |
| 3147 | // unchanged by popping safepoint registers. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3148 | __ test(tmp, Immediate(HeapNumber::kSignMask)); |
| 3149 | __ j(not_zero, &negative); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3150 | __ jmp(&done); |
| 3151 | |
| 3152 | __ bind(&negative); |
| 3153 | |
| 3154 | Label allocated, slow; |
| 3155 | __ AllocateHeapNumber(tmp, tmp2, no_reg, &slow); |
| 3156 | __ jmp(&allocated); |
| 3157 | |
| 3158 | // Slow case: Call the runtime system to do the number allocation. |
| 3159 | __ bind(&slow); |
| 3160 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3161 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, |
| 3162 | instr, instr->context()); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3163 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3164 | // Set the pointer to the new heap number in tmp. |
| 3165 | if (!tmp.is(eax)) __ mov(tmp, eax); |
| 3166 | |
| 3167 | // Restore input_reg after call to runtime. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3168 | __ LoadFromSafepointRegisterSlot(input_reg, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3169 | |
| 3170 | __ bind(&allocated); |
| 3171 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 3172 | __ and_(tmp2, ~HeapNumber::kSignMask); |
| 3173 | __ mov(FieldOperand(tmp, HeapNumber::kExponentOffset), tmp2); |
| 3174 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kMantissaOffset)); |
| 3175 | __ mov(FieldOperand(tmp, HeapNumber::kMantissaOffset), tmp2); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3176 | __ StoreToSafepointRegisterSlot(input_reg, tmp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3177 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3178 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3179 | } |
| 3180 | |
| 3181 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3182 | void LCodeGen::EmitIntegerMathAbs(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3183 | Register input_reg = ToRegister(instr->value()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3184 | __ test(input_reg, Operand(input_reg)); |
| 3185 | Label is_positive; |
| 3186 | __ j(not_sign, &is_positive); |
| 3187 | __ neg(input_reg); |
| 3188 | __ test(input_reg, Operand(input_reg)); |
| 3189 | DeoptimizeIf(negative, instr->environment()); |
| 3190 | __ bind(&is_positive); |
| 3191 | } |
| 3192 | |
| 3193 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3194 | void LCodeGen::DoMathAbs(LUnaryMathOperation* instr) { |
| 3195 | // Class for deferred case. |
| 3196 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 3197 | public: |
| 3198 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, |
| 3199 | LUnaryMathOperation* instr) |
| 3200 | : LDeferredCode(codegen), instr_(instr) { } |
| 3201 | virtual void Generate() { |
| 3202 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3203 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3204 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3205 | private: |
| 3206 | LUnaryMathOperation* instr_; |
| 3207 | }; |
| 3208 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3209 | ASSERT(instr->value()->Equals(instr->result())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3210 | Representation r = instr->hydrogen()->value()->representation(); |
| 3211 | |
| 3212 | if (r.IsDouble()) { |
| 3213 | XMMRegister scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3214 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3215 | __ xorps(scratch, scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3216 | __ subsd(scratch, input_reg); |
| 3217 | __ pand(input_reg, scratch); |
| 3218 | } else if (r.IsInteger32()) { |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3219 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3220 | } else { // Tagged case. |
| 3221 | DeferredMathAbsTaggedHeapNumber* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3222 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3223 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3224 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3225 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3226 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3227 | __ bind(deferred->exit()); |
| 3228 | } |
| 3229 | } |
| 3230 | |
| 3231 | |
| 3232 | void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { |
| 3233 | XMMRegister xmm_scratch = xmm0; |
| 3234 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3235 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3236 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3237 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3238 | CpuFeatures::Scope scope(SSE4_1); |
| 3239 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3240 | // Deoptimize on negative zero. |
| 3241 | Label non_zero; |
| 3242 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3243 | __ ucomisd(input_reg, xmm_scratch); |
| 3244 | __ j(not_equal, &non_zero, Label::kNear); |
| 3245 | __ movmskpd(output_reg, input_reg); |
| 3246 | __ test(output_reg, Immediate(1)); |
| 3247 | DeoptimizeIf(not_zero, instr->environment()); |
| 3248 | __ bind(&non_zero); |
| 3249 | } |
| 3250 | __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
| 3251 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
| 3252 | // Overflow is signalled with minint. |
| 3253 | __ cmp(output_reg, 0x80000000u); |
| 3254 | DeoptimizeIf(equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3255 | } else { |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3256 | Label negative_sign, done; |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3257 | // Deoptimize on unordered. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3258 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3259 | __ ucomisd(input_reg, xmm_scratch); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3260 | DeoptimizeIf(parity_even, instr->environment()); |
| 3261 | __ j(below, &negative_sign, Label::kNear); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3262 | |
| 3263 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3264 | // Check for negative zero. |
| 3265 | Label positive_sign; |
| 3266 | __ j(above, &positive_sign, Label::kNear); |
| 3267 | __ movmskpd(output_reg, input_reg); |
| 3268 | __ test(output_reg, Immediate(1)); |
| 3269 | DeoptimizeIf(not_zero, instr->environment()); |
| 3270 | __ Set(output_reg, Immediate(0)); |
| 3271 | __ jmp(&done, Label::kNear); |
| 3272 | __ bind(&positive_sign); |
| 3273 | } |
| 3274 | |
| 3275 | // Use truncating instruction (OK because input is positive). |
| 3276 | __ cvttsd2si(output_reg, Operand(input_reg)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3277 | // Overflow is signalled with minint. |
| 3278 | __ cmp(output_reg, 0x80000000u); |
| 3279 | DeoptimizeIf(equal, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3280 | __ jmp(&done, Label::kNear); |
| 3281 | |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3282 | // Non-zero negative reaches here. |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3283 | __ bind(&negative_sign); |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 3284 | // Truncate, then compare and compensate. |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3285 | __ cvttsd2si(output_reg, Operand(input_reg)); |
| 3286 | __ cvtsi2sd(xmm_scratch, output_reg); |
| 3287 | __ ucomisd(input_reg, xmm_scratch); |
| 3288 | __ j(equal, &done, Label::kNear); |
| 3289 | __ sub(output_reg, Immediate(1)); |
| 3290 | DeoptimizeIf(overflow, instr->environment()); |
| 3291 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3292 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3293 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3294 | } |
| 3295 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3296 | void LCodeGen::DoMathRound(LUnaryMathOperation* instr) { |
| 3297 | XMMRegister xmm_scratch = xmm0; |
| 3298 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3299 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3300 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3301 | Label below_half, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3302 | // xmm_scratch = 0.5 |
| 3303 | ExternalReference one_half = ExternalReference::address_of_one_half(); |
| 3304 | __ movdbl(xmm_scratch, Operand::StaticVariable(one_half)); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3305 | __ ucomisd(xmm_scratch, input_reg); |
| 3306 | __ j(above, &below_half); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3307 | // xmm_scratch = input + 0.5 |
| 3308 | __ addsd(xmm_scratch, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3309 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3310 | // Compute Math.floor(value + 0.5). |
| 3311 | // Use truncating instruction (OK because input is positive). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3312 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3313 | |
| 3314 | // Overflow is signalled with minint. |
| 3315 | __ cmp(output_reg, 0x80000000u); |
| 3316 | DeoptimizeIf(equal, instr->environment()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3317 | __ jmp(&done); |
| 3318 | |
| 3319 | __ bind(&below_half); |
| 3320 | |
| 3321 | // We return 0 for the input range [+0, 0.5[, or [-0.5, 0.5[ if |
| 3322 | // we can ignore the difference between a result of -0 and +0. |
| 3323 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3324 | // If the sign is positive, we return +0. |
| 3325 | __ movmskpd(output_reg, input_reg); |
| 3326 | __ test(output_reg, Immediate(1)); |
| 3327 | DeoptimizeIf(not_zero, instr->environment()); |
| 3328 | } else { |
| 3329 | // If the input is >= -0.5, we return +0. |
| 3330 | __ mov(output_reg, Immediate(0xBF000000)); |
| 3331 | __ movd(xmm_scratch, Operand(output_reg)); |
| 3332 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3333 | __ ucomisd(input_reg, xmm_scratch); |
| 3334 | DeoptimizeIf(below, instr->environment()); |
| 3335 | } |
| 3336 | __ Set(output_reg, Immediate(0)); |
| 3337 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3338 | } |
| 3339 | |
| 3340 | |
| 3341 | void LCodeGen::DoMathSqrt(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3342 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3343 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
| 3344 | __ sqrtsd(input_reg, input_reg); |
| 3345 | } |
| 3346 | |
| 3347 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3348 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3349 | XMMRegister xmm_scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3350 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3351 | Register scratch = ToRegister(instr->temp()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3352 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3353 | |
| 3354 | // Note that according to ECMA-262 15.8.2.13: |
| 3355 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3356 | // Math.sqrt(-Infinity) == NaN |
| 3357 | Label done, sqrt; |
| 3358 | // Check base for -Infinity. According to IEEE-754, single-precision |
| 3359 | // -Infinity has the highest 9 bits set and the lowest 23 bits cleared. |
| 3360 | __ mov(scratch, 0xFF800000); |
| 3361 | __ movd(xmm_scratch, scratch); |
| 3362 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3363 | __ ucomisd(input_reg, xmm_scratch); |
| 3364 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 3365 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 3366 | __ j(not_equal, &sqrt, Label::kNear); |
| 3367 | __ j(carry, &sqrt, Label::kNear); |
| 3368 | // If input is -Infinity, return Infinity. |
| 3369 | __ xorps(input_reg, input_reg); |
| 3370 | __ subsd(input_reg, xmm_scratch); |
| 3371 | __ jmp(&done, Label::kNear); |
| 3372 | |
| 3373 | // Square root. |
| 3374 | __ bind(&sqrt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3375 | __ xorps(xmm_scratch, xmm_scratch); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3376 | __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3377 | __ sqrtsd(input_reg, input_reg); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3378 | __ bind(&done); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3379 | } |
| 3380 | |
| 3381 | |
| 3382 | void LCodeGen::DoPower(LPower* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3383 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3384 | // Having marked this as a call, we can use any registers. |
| 3385 | // Just make sure that the input/output registers are the expected ones. |
| 3386 | ASSERT(!instr->InputAt(1)->IsDoubleRegister() || |
| 3387 | ToDoubleRegister(instr->InputAt(1)).is(xmm1)); |
| 3388 | ASSERT(!instr->InputAt(1)->IsRegister() || |
| 3389 | ToRegister(instr->InputAt(1)).is(eax)); |
| 3390 | ASSERT(ToDoubleRegister(instr->InputAt(0)).is(xmm2)); |
| 3391 | ASSERT(ToDoubleRegister(instr->result()).is(xmm3)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3392 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3393 | if (exponent_type.IsTagged()) { |
| 3394 | Label no_deopt; |
| 3395 | __ JumpIfSmi(eax, &no_deopt); |
| 3396 | __ CmpObjectType(eax, HEAP_NUMBER_TYPE, ecx); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3397 | DeoptimizeIf(not_equal, instr->environment()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3398 | __ bind(&no_deopt); |
| 3399 | MathPowStub stub(MathPowStub::TAGGED); |
| 3400 | __ CallStub(&stub); |
| 3401 | } else if (exponent_type.IsInteger32()) { |
| 3402 | MathPowStub stub(MathPowStub::INTEGER); |
| 3403 | __ CallStub(&stub); |
| 3404 | } else { |
| 3405 | ASSERT(exponent_type.IsDouble()); |
| 3406 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3407 | __ CallStub(&stub); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3408 | } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3409 | } |
| 3410 | |
| 3411 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3412 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3413 | class DeferredDoRandom: public LDeferredCode { |
| 3414 | public: |
| 3415 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3416 | : LDeferredCode(codegen), instr_(instr) { } |
| 3417 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3418 | virtual LInstruction* instr() { return instr_; } |
| 3419 | private: |
| 3420 | LRandom* instr_; |
| 3421 | }; |
| 3422 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3423 | DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3424 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3425 | // Having marked this instruction as a call we can use any |
| 3426 | // registers. |
| 3427 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3428 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3429 | // Assert that the register size is indeed the size of each seed. |
| 3430 | static const int kSeedSize = sizeof(uint32_t); |
| 3431 | STATIC_ASSERT(kPointerSize == kSeedSize); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3432 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3433 | __ mov(eax, FieldOperand(eax, GlobalObject::kNativeContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3434 | static const int kRandomSeedOffset = |
| 3435 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3436 | __ mov(ebx, FieldOperand(eax, kRandomSeedOffset)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3437 | // ebx: FixedArray of the native context's random seeds |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3438 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3439 | // Load state[0]. |
| 3440 | __ mov(ecx, FieldOperand(ebx, ByteArray::kHeaderSize)); |
| 3441 | // If state[0] == 0, call runtime to initialize seeds. |
| 3442 | __ test(ecx, ecx); |
| 3443 | __ j(zero, deferred->entry()); |
| 3444 | // Load state[1]. |
| 3445 | __ mov(eax, FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize)); |
| 3446 | // ecx: state[0] |
| 3447 | // eax: state[1] |
| 3448 | |
| 3449 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3450 | __ movzx_w(edx, ecx); |
| 3451 | __ imul(edx, edx, 18273); |
| 3452 | __ shr(ecx, 16); |
| 3453 | __ add(ecx, edx); |
| 3454 | // Save state[0]. |
| 3455 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize), ecx); |
| 3456 | |
| 3457 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3458 | __ movzx_w(edx, eax); |
| 3459 | __ imul(edx, edx, 36969); |
| 3460 | __ shr(eax, 16); |
| 3461 | __ add(eax, edx); |
| 3462 | // Save state[1]. |
| 3463 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize), eax); |
| 3464 | |
| 3465 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3466 | __ shl(ecx, 14); |
| 3467 | __ and_(eax, Immediate(0x3FFFF)); |
| 3468 | __ add(eax, ecx); |
| 3469 | |
| 3470 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3471 | // Convert 32 random bits in eax to 0.(32 random bits) in a double |
| 3472 | // by computing: |
| 3473 | // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 3474 | __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single. |
| 3475 | __ movd(xmm2, ebx); |
| 3476 | __ movd(xmm1, eax); |
| 3477 | __ cvtss2sd(xmm2, xmm2); |
| 3478 | __ xorps(xmm1, xmm2); |
| 3479 | __ subsd(xmm1, xmm2); |
| 3480 | } |
| 3481 | |
| 3482 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3483 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3484 | __ PrepareCallCFunction(1, ebx); |
| 3485 | __ mov(Operand(esp, 0), eax); |
| 3486 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3487 | // Return value is in eax. |
| 3488 | } |
| 3489 | |
| 3490 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3491 | void LCodeGen::DoMathLog(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3492 | ASSERT(instr->value()->Equals(instr->result())); |
| 3493 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3494 | Label positive, done, zero; |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3495 | __ xorps(xmm0, xmm0); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3496 | __ ucomisd(input_reg, xmm0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3497 | __ j(above, &positive, Label::kNear); |
| 3498 | __ j(equal, &zero, Label::kNear); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 3499 | ExternalReference nan = |
| 3500 | ExternalReference::address_of_canonical_non_hole_nan(); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3501 | __ movdbl(input_reg, Operand::StaticVariable(nan)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3502 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3503 | __ bind(&zero); |
| 3504 | __ push(Immediate(0xFFF00000)); |
| 3505 | __ push(Immediate(0)); |
| 3506 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3507 | __ add(Operand(esp), Immediate(kDoubleSize)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3508 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3509 | __ bind(&positive); |
| 3510 | __ fldln2(); |
| 3511 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 3512 | __ movdbl(Operand(esp, 0), input_reg); |
| 3513 | __ fld_d(Operand(esp, 0)); |
| 3514 | __ fyl2x(); |
| 3515 | __ fstp_d(Operand(esp, 0)); |
| 3516 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3517 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3518 | __ bind(&done); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3519 | } |
| 3520 | |
| 3521 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3522 | void LCodeGen::DoMathTan(LUnaryMathOperation* instr) { |
| 3523 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3524 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3525 | TranscendentalCacheStub::UNTAGGED); |
| 3526 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
| 3527 | } |
| 3528 | |
| 3529 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3530 | void LCodeGen::DoMathCos(LUnaryMathOperation* instr) { |
| 3531 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3532 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3533 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3534 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3535 | } |
| 3536 | |
| 3537 | |
| 3538 | void LCodeGen::DoMathSin(LUnaryMathOperation* instr) { |
| 3539 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3540 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3541 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3542 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3543 | } |
| 3544 | |
| 3545 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3546 | void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) { |
| 3547 | switch (instr->op()) { |
| 3548 | case kMathAbs: |
| 3549 | DoMathAbs(instr); |
| 3550 | break; |
| 3551 | case kMathFloor: |
| 3552 | DoMathFloor(instr); |
| 3553 | break; |
| 3554 | case kMathRound: |
| 3555 | DoMathRound(instr); |
| 3556 | break; |
| 3557 | case kMathSqrt: |
| 3558 | DoMathSqrt(instr); |
| 3559 | break; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3560 | case kMathCos: |
| 3561 | DoMathCos(instr); |
| 3562 | break; |
| 3563 | case kMathSin: |
| 3564 | DoMathSin(instr); |
| 3565 | break; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3566 | case kMathTan: |
| 3567 | DoMathTan(instr); |
| 3568 | break; |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3569 | case kMathLog: |
| 3570 | DoMathLog(instr); |
| 3571 | break; |
| 3572 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3573 | default: |
| 3574 | UNREACHABLE(); |
| 3575 | } |
| 3576 | } |
| 3577 | |
| 3578 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3579 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3580 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3581 | ASSERT(ToRegister(instr->function()).is(edi)); |
| 3582 | ASSERT(instr->HasPointerMap()); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3583 | |
| 3584 | if (instr->known_function().is_null()) { |
| 3585 | LPointerMap* pointers = instr->pointer_map(); |
| 3586 | RecordPosition(pointers->position()); |
| 3587 | SafepointGenerator generator( |
| 3588 | this, pointers, Safepoint::kLazyDeopt); |
| 3589 | ParameterCount count(instr->arity()); |
| 3590 | __ InvokeFunction(edi, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
| 3591 | } else { |
| 3592 | CallKnownFunction(instr->known_function(), |
| 3593 | instr->arity(), |
| 3594 | instr, |
| 3595 | CALL_AS_METHOD, |
| 3596 | EDI_CONTAINS_TARGET); |
| 3597 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3598 | } |
| 3599 | |
| 3600 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3601 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3602 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3603 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3604 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3605 | |
| 3606 | int arity = instr->arity(); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3607 | Handle<Code> ic = |
| 3608 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3609 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3610 | } |
| 3611 | |
| 3612 | |
| 3613 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3614 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3615 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3616 | |
| 3617 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3618 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3619 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3620 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3621 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3622 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3623 | } |
| 3624 | |
| 3625 | |
| 3626 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3627 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3628 | ASSERT(ToRegister(instr->function()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3629 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3630 | |
| 3631 | int arity = instr->arity(); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3632 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3633 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3634 | } |
| 3635 | |
| 3636 | |
| 3637 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3638 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3639 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3640 | |
| 3641 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3642 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 3643 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3644 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3645 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3646 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3647 | } |
| 3648 | |
| 3649 | |
| 3650 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 3651 | ASSERT(ToRegister(instr->result()).is(eax)); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3652 | CallKnownFunction(instr->target(), |
| 3653 | instr->arity(), |
| 3654 | instr, |
| 3655 | CALL_AS_FUNCTION, |
| 3656 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3657 | } |
| 3658 | |
| 3659 | |
| 3660 | void LCodeGen::DoCallNew(LCallNew* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3661 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3662 | ASSERT(ToRegister(instr->constructor()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3663 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3664 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3665 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3666 | __ Set(eax, Immediate(instr->arity())); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3667 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3668 | } |
| 3669 | |
| 3670 | |
| 3671 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3672 | CallRuntime(instr->function(), instr->arity(), instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3673 | } |
| 3674 | |
| 3675 | |
| 3676 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
| 3677 | Register object = ToRegister(instr->object()); |
| 3678 | Register value = ToRegister(instr->value()); |
| 3679 | int offset = instr->offset(); |
| 3680 | |
| 3681 | if (!instr->transition().is_null()) { |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3682 | if (!instr->hydrogen()->NeedsWriteBarrierForMap()) { |
| 3683 | __ mov(FieldOperand(object, HeapObject::kMapOffset), instr->transition()); |
| 3684 | } else { |
| 3685 | Register temp = ToRegister(instr->TempAt(0)); |
| 3686 | Register temp_map = ToRegister(instr->TempAt(1)); |
| 3687 | __ mov(temp_map, instr->transition()); |
| 3688 | __ mov(FieldOperand(object, HeapObject::kMapOffset), temp_map); |
| 3689 | // Update the write barrier for the map field. |
| 3690 | __ RecordWriteField(object, |
| 3691 | HeapObject::kMapOffset, |
| 3692 | temp_map, |
| 3693 | temp, |
| 3694 | kSaveFPRegs, |
| 3695 | OMIT_REMEMBERED_SET, |
| 3696 | OMIT_SMI_CHECK); |
| 3697 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3698 | } |
| 3699 | |
| 3700 | // Do the store. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3701 | HType type = instr->hydrogen()->value()->type(); |
| 3702 | SmiCheck check_needed = |
| 3703 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3704 | if (instr->is_in_object()) { |
| 3705 | __ mov(FieldOperand(object, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3706 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3707 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3708 | // 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] | 3709 | __ RecordWriteField(object, |
| 3710 | offset, |
| 3711 | value, |
| 3712 | temp, |
| 3713 | kSaveFPRegs, |
| 3714 | EMIT_REMEMBERED_SET, |
| 3715 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3716 | } |
| 3717 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3718 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3719 | __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 3720 | __ mov(FieldOperand(temp, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3721 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3722 | // Update the write barrier for the properties array. |
| 3723 | // object is used as a scratch register. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3724 | __ RecordWriteField(temp, |
| 3725 | offset, |
| 3726 | value, |
| 3727 | object, |
| 3728 | kSaveFPRegs, |
| 3729 | EMIT_REMEMBERED_SET, |
| 3730 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3731 | } |
| 3732 | } |
| 3733 | } |
| 3734 | |
| 3735 | |
| 3736 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3737 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3738 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3739 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3740 | |
| 3741 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3742 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3743 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 3744 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3745 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3746 | } |
| 3747 | |
| 3748 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3749 | void LCodeGen::DeoptIfTaggedButNotSmi(LEnvironment* environment, |
| 3750 | HValue* value, |
| 3751 | LOperand* operand) { |
| 3752 | if (value->representation().IsTagged() && !value->type().IsSmi()) { |
| 3753 | if (operand->IsRegister()) { |
| 3754 | __ test(ToRegister(operand), Immediate(kSmiTagMask)); |
| 3755 | } else { |
| 3756 | __ test(ToOperand(operand), Immediate(kSmiTagMask)); |
| 3757 | } |
| 3758 | DeoptimizeIf(not_zero, environment); |
| 3759 | } |
| 3760 | } |
| 3761 | |
| 3762 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3763 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3764 | DeoptIfTaggedButNotSmi(instr->environment(), |
| 3765 | instr->hydrogen()->length(), |
| 3766 | instr->length()); |
| 3767 | DeoptIfTaggedButNotSmi(instr->environment(), |
| 3768 | instr->hydrogen()->index(), |
| 3769 | instr->index()); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3770 | if (instr->index()->IsConstantOperand()) { |
jkummerow@chromium.org | 000f7fb | 2012-08-01 11:14:42 +0000 | [diff] [blame] | 3771 | int constant_index = |
| 3772 | ToInteger32(LConstantOperand::cast(instr->index())); |
| 3773 | if (instr->hydrogen()->length()->representation().IsTagged()) { |
| 3774 | __ cmp(ToOperand(instr->length()), |
| 3775 | Immediate(Smi::FromInt(constant_index))); |
| 3776 | } else { |
| 3777 | __ cmp(ToOperand(instr->length()), Immediate(constant_index)); |
| 3778 | } |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3779 | DeoptimizeIf(below_equal, instr->environment()); |
| 3780 | } else { |
| 3781 | __ cmp(ToRegister(instr->index()), ToOperand(instr->length())); |
| 3782 | DeoptimizeIf(above_equal, instr->environment()); |
| 3783 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3784 | } |
| 3785 | |
| 3786 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3787 | void LCodeGen::DoStoreKeyedSpecializedArrayElement( |
| 3788 | LStoreKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3789 | ElementsKind elements_kind = instr->elements_kind(); |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3790 | LOperand* key = instr->key(); |
| 3791 | if (!key->IsConstantOperand() && |
| 3792 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 3793 | elements_kind)) { |
| 3794 | __ SmiUntag(ToRegister(key)); |
| 3795 | } |
| 3796 | Operand operand(BuildFastArrayOperand( |
| 3797 | instr->external_pointer(), |
| 3798 | key, |
| 3799 | instr->hydrogen()->key()->representation(), |
| 3800 | elements_kind, |
| 3801 | 0, |
| 3802 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3803 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3804 | __ cvtsd2ss(xmm0, ToDoubleRegister(instr->value())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3805 | __ movss(operand, xmm0); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3806 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3807 | __ movdbl(operand, ToDoubleRegister(instr->value())); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3808 | } else { |
| 3809 | Register value = ToRegister(instr->value()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3810 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3811 | case EXTERNAL_PIXEL_ELEMENTS: |
| 3812 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3813 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3814 | __ mov_b(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3815 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3816 | case EXTERNAL_SHORT_ELEMENTS: |
| 3817 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3818 | __ mov_w(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3819 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3820 | case EXTERNAL_INT_ELEMENTS: |
| 3821 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3822 | __ mov(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3823 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3824 | case EXTERNAL_FLOAT_ELEMENTS: |
| 3825 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3826 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3827 | case FAST_ELEMENTS: |
| 3828 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3829 | case FAST_HOLEY_SMI_ELEMENTS: |
| 3830 | case FAST_HOLEY_ELEMENTS: |
| 3831 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3832 | case DICTIONARY_ELEMENTS: |
| 3833 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3834 | UNREACHABLE(); |
| 3835 | break; |
| 3836 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3837 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3838 | } |
| 3839 | |
| 3840 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3841 | void LCodeGen::DoStoreKeyedFastElement(LStoreKeyedFastElement* instr) { |
| 3842 | Register value = ToRegister(instr->value()); |
| 3843 | Register elements = ToRegister(instr->object()); |
| 3844 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg; |
| 3845 | |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3846 | Operand operand = BuildFastArrayOperand( |
| 3847 | instr->object(), |
| 3848 | instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3849 | instr->hydrogen()->key()->representation(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3850 | FAST_ELEMENTS, |
| 3851 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 3852 | instr->additional_index()); |
| 3853 | __ mov(operand, value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3854 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3855 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3856 | ASSERT(!instr->key()->IsConstantOperand()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3857 | HType type = instr->hydrogen()->value()->type(); |
| 3858 | SmiCheck check_needed = |
| 3859 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3860 | // Compute address of modified element and store it into key register. |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3861 | __ lea(key, operand); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3862 | __ RecordWrite(elements, |
| 3863 | key, |
| 3864 | value, |
| 3865 | kSaveFPRegs, |
| 3866 | EMIT_REMEMBERED_SET, |
| 3867 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3868 | } |
| 3869 | } |
| 3870 | |
| 3871 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3872 | void LCodeGen::DoStoreKeyedFastDoubleElement( |
| 3873 | LStoreKeyedFastDoubleElement* instr) { |
| 3874 | XMMRegister value = ToDoubleRegister(instr->value()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3875 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3876 | if (instr->NeedsCanonicalization()) { |
| 3877 | Label have_value; |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3878 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3879 | __ ucomisd(value, value); |
| 3880 | __ j(parity_odd, &have_value); // NaN. |
| 3881 | |
| 3882 | ExternalReference canonical_nan_reference = |
| 3883 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 3884 | __ movdbl(value, Operand::StaticVariable(canonical_nan_reference)); |
| 3885 | __ bind(&have_value); |
| 3886 | } |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3887 | |
| 3888 | Operand double_store_operand = BuildFastArrayOperand( |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3889 | instr->elements(), |
| 3890 | instr->key(), |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 3891 | instr->hydrogen()->key()->representation(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3892 | FAST_DOUBLE_ELEMENTS, |
| 3893 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 3894 | instr->additional_index()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3895 | __ movdbl(double_store_operand, value); |
| 3896 | } |
| 3897 | |
| 3898 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3899 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3900 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3901 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3902 | ASSERT(ToRegister(instr->key()).is(ecx)); |
| 3903 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3904 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3905 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3906 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 3907 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3908 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3909 | } |
| 3910 | |
| 3911 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3912 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 3913 | Register object_reg = ToRegister(instr->object()); |
| 3914 | Register new_map_reg = ToRegister(instr->new_map_reg()); |
| 3915 | |
| 3916 | Handle<Map> from_map = instr->original_map(); |
| 3917 | Handle<Map> to_map = instr->transitioned_map(); |
| 3918 | ElementsKind from_kind = from_map->elements_kind(); |
| 3919 | ElementsKind to_kind = to_map->elements_kind(); |
| 3920 | |
| 3921 | Label not_applicable; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3922 | bool is_simple_map_transition = |
| 3923 | IsSimpleMapChangeTransition(from_kind, to_kind); |
| 3924 | Label::Distance branch_distance = |
| 3925 | is_simple_map_transition ? Label::kNear : Label::kFar; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3926 | __ cmp(FieldOperand(object_reg, HeapObject::kMapOffset), from_map); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3927 | __ j(not_equal, ¬_applicable, branch_distance); |
| 3928 | if (is_simple_map_transition) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3929 | Register object_reg = ToRegister(instr->object()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3930 | Handle<Map> map = instr->hydrogen()->transitioned_map(); |
| 3931 | __ mov(FieldOperand(object_reg, HeapObject::kMapOffset), |
| 3932 | Immediate(map)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3933 | // Write barrier. |
| 3934 | ASSERT_NE(instr->temp_reg(), NULL); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3935 | __ RecordWriteForMap(object_reg, to_map, new_map_reg, |
| 3936 | ToRegister(instr->temp_reg()), |
| 3937 | kDontSaveFPRegs); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3938 | } else if (IsFastSmiElementsKind(from_kind) && |
| 3939 | IsFastDoubleElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3940 | __ mov(new_map_reg, to_map); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3941 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3942 | ASSERT(fixed_object_reg.is(edx)); |
| 3943 | ASSERT(new_map_reg.is(ebx)); |
| 3944 | __ mov(fixed_object_reg, object_reg); |
| 3945 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 3946 | RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3947 | } else if (IsFastDoubleElementsKind(from_kind) && |
| 3948 | IsFastObjectElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3949 | __ mov(new_map_reg, to_map); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3950 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3951 | ASSERT(fixed_object_reg.is(edx)); |
| 3952 | ASSERT(new_map_reg.is(ebx)); |
| 3953 | __ mov(fixed_object_reg, object_reg); |
| 3954 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 3955 | RelocInfo::CODE_TARGET, instr); |
| 3956 | } else { |
| 3957 | UNREACHABLE(); |
| 3958 | } |
| 3959 | __ bind(¬_applicable); |
| 3960 | } |
| 3961 | |
| 3962 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3963 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3964 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 3965 | public: |
| 3966 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 3967 | : LDeferredCode(codegen), instr_(instr) { } |
| 3968 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3969 | virtual LInstruction* instr() { return instr_; } |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3970 | private: |
| 3971 | LStringCharCodeAt* instr_; |
| 3972 | }; |
| 3973 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3974 | DeferredStringCharCodeAt* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3975 | new(zone()) DeferredStringCharCodeAt(this, instr); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3976 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 3977 | StringCharLoadGenerator::Generate(masm(), |
| 3978 | factory(), |
| 3979 | ToRegister(instr->string()), |
| 3980 | ToRegister(instr->index()), |
| 3981 | ToRegister(instr->result()), |
| 3982 | deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3983 | __ bind(deferred->exit()); |
| 3984 | } |
| 3985 | |
| 3986 | |
| 3987 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3988 | Register string = ToRegister(instr->string()); |
| 3989 | Register result = ToRegister(instr->result()); |
| 3990 | |
| 3991 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3992 | // result register contain a valid pointer because it is already |
| 3993 | // contained in the register pointer map. |
| 3994 | __ Set(result, Immediate(0)); |
| 3995 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3996 | PushSafepointRegistersScope scope(this); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3997 | __ push(string); |
| 3998 | // Push the index as a smi. This is safe because of the checks in |
| 3999 | // DoStringCharCodeAt above. |
| 4000 | STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue); |
| 4001 | if (instr->index()->IsConstantOperand()) { |
| 4002 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 4003 | __ push(Immediate(Smi::FromInt(const_index))); |
| 4004 | } else { |
| 4005 | Register index = ToRegister(instr->index()); |
| 4006 | __ SmiTag(index); |
| 4007 | __ push(index); |
| 4008 | } |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4009 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, |
| 4010 | instr, instr->context()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4011 | if (FLAG_debug_code) { |
| 4012 | __ AbortIfNotSmi(eax); |
| 4013 | } |
| 4014 | __ SmiUntag(eax); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4015 | __ StoreToSafepointRegisterSlot(result, eax); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4016 | } |
| 4017 | |
| 4018 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4019 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 4020 | class DeferredStringCharFromCode: public LDeferredCode { |
| 4021 | public: |
| 4022 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 4023 | : LDeferredCode(codegen), instr_(instr) { } |
| 4024 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4025 | virtual LInstruction* instr() { return instr_; } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4026 | private: |
| 4027 | LStringCharFromCode* instr_; |
| 4028 | }; |
| 4029 | |
| 4030 | DeferredStringCharFromCode* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4031 | new(zone()) DeferredStringCharFromCode(this, instr); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4032 | |
| 4033 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 4034 | Register char_code = ToRegister(instr->char_code()); |
| 4035 | Register result = ToRegister(instr->result()); |
| 4036 | ASSERT(!char_code.is(result)); |
| 4037 | |
| 4038 | __ cmp(char_code, String::kMaxAsciiCharCode); |
| 4039 | __ j(above, deferred->entry()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4040 | __ Set(result, Immediate(factory()->single_character_string_cache())); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4041 | __ mov(result, FieldOperand(result, |
| 4042 | char_code, times_pointer_size, |
| 4043 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4044 | __ cmp(result, factory()->undefined_value()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4045 | __ j(equal, deferred->entry()); |
| 4046 | __ bind(deferred->exit()); |
| 4047 | } |
| 4048 | |
| 4049 | |
| 4050 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 4051 | Register char_code = ToRegister(instr->char_code()); |
| 4052 | Register result = ToRegister(instr->result()); |
| 4053 | |
| 4054 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4055 | // result register contain a valid pointer because it is already |
| 4056 | // contained in the register pointer map. |
| 4057 | __ Set(result, Immediate(0)); |
| 4058 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4059 | PushSafepointRegistersScope scope(this); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4060 | __ SmiTag(char_code); |
| 4061 | __ push(char_code); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4062 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4063 | __ StoreToSafepointRegisterSlot(result, eax); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 4064 | } |
| 4065 | |
| 4066 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4067 | void LCodeGen::DoStringLength(LStringLength* instr) { |
| 4068 | Register string = ToRegister(instr->string()); |
| 4069 | Register result = ToRegister(instr->result()); |
| 4070 | __ mov(result, FieldOperand(string, String::kLengthOffset)); |
| 4071 | } |
| 4072 | |
| 4073 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4074 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4075 | EmitPushTaggedOperand(instr->left()); |
| 4076 | EmitPushTaggedOperand(instr->right()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4077 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4078 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4079 | } |
| 4080 | |
| 4081 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4082 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4083 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4084 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 4085 | LOperand* output = instr->result(); |
| 4086 | ASSERT(output->IsDoubleRegister()); |
| 4087 | __ cvtsi2sd(ToDoubleRegister(output), ToOperand(input)); |
| 4088 | } |
| 4089 | |
| 4090 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4091 | void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) { |
| 4092 | LOperand* input = instr->InputAt(0); |
| 4093 | LOperand* output = instr->result(); |
| 4094 | LOperand* temp = instr->TempAt(0); |
| 4095 | |
| 4096 | __ LoadUint32(ToDoubleRegister(output), |
| 4097 | ToRegister(input), |
| 4098 | ToDoubleRegister(temp)); |
| 4099 | } |
| 4100 | |
| 4101 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4102 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 4103 | class DeferredNumberTagI: public LDeferredCode { |
| 4104 | public: |
| 4105 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 4106 | : LDeferredCode(codegen), instr_(instr) { } |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4107 | virtual void Generate() { |
| 4108 | codegen()->DoDeferredNumberTagI(instr_, |
| 4109 | instr_->InputAt(0), |
| 4110 | SIGNED_INT32); |
| 4111 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4112 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4113 | private: |
| 4114 | LNumberTagI* instr_; |
| 4115 | }; |
| 4116 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4117 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4118 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4119 | Register reg = ToRegister(input); |
| 4120 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4121 | DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4122 | __ SmiTag(reg); |
| 4123 | __ j(overflow, deferred->entry()); |
| 4124 | __ bind(deferred->exit()); |
| 4125 | } |
| 4126 | |
| 4127 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4128 | void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
| 4129 | class DeferredNumberTagU: public LDeferredCode { |
| 4130 | public: |
| 4131 | DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr) |
| 4132 | : LDeferredCode(codegen), instr_(instr) { } |
| 4133 | virtual void Generate() { |
| 4134 | codegen()->DoDeferredNumberTagI(instr_, |
| 4135 | instr_->InputAt(0), |
| 4136 | UNSIGNED_INT32); |
| 4137 | } |
| 4138 | virtual LInstruction* instr() { return instr_; } |
| 4139 | private: |
| 4140 | LNumberTagU* instr_; |
| 4141 | }; |
| 4142 | |
| 4143 | LOperand* input = instr->InputAt(0); |
| 4144 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4145 | Register reg = ToRegister(input); |
| 4146 | |
| 4147 | DeferredNumberTagU* deferred = new(zone()) DeferredNumberTagU(this, instr); |
| 4148 | __ cmp(reg, Immediate(Smi::kMaxValue)); |
| 4149 | __ j(above, deferred->entry()); |
| 4150 | __ SmiTag(reg); |
| 4151 | __ bind(deferred->exit()); |
| 4152 | } |
| 4153 | |
| 4154 | |
| 4155 | void LCodeGen::DoDeferredNumberTagI(LInstruction* instr, |
| 4156 | LOperand* value, |
| 4157 | IntegerSignedness signedness) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4158 | Label slow; |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4159 | Register reg = ToRegister(value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4160 | Register tmp = reg.is(eax) ? ecx : eax; |
| 4161 | |
| 4162 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4163 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4164 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4165 | Label done; |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4166 | |
| 4167 | if (signedness == SIGNED_INT32) { |
| 4168 | // There was overflow, so bits 30 and 31 of the original integer |
| 4169 | // disagree. Try to allocate a heap number in new space and store |
| 4170 | // the value in there. If that fails, call the runtime system. |
| 4171 | __ SmiUntag(reg); |
| 4172 | __ xor_(reg, 0x80000000); |
| 4173 | __ cvtsi2sd(xmm0, Operand(reg)); |
| 4174 | } else { |
| 4175 | __ LoadUint32(xmm0, reg, xmm1); |
| 4176 | } |
| 4177 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4178 | if (FLAG_inline_new) { |
| 4179 | __ AllocateHeapNumber(reg, tmp, no_reg, &slow); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4180 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4181 | } |
| 4182 | |
| 4183 | // Slow case: Call the runtime system to do the number allocation. |
| 4184 | __ bind(&slow); |
| 4185 | |
| 4186 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 4187 | // register is stored, as this register is in the pointer map, but contains an |
| 4188 | // integer value. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4189 | __ StoreToSafepointRegisterSlot(reg, Immediate(0)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4190 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4191 | // the environment's HContext or HInlinedContext value. |
| 4192 | // They only call Runtime::kAllocateHeapNumber. |
| 4193 | // The corresponding HChange instructions are added in a phase that does |
| 4194 | // not have easy access to the local context. |
| 4195 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4196 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
| 4197 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4198 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4199 | if (!reg.is(eax)) __ mov(reg, eax); |
| 4200 | |
| 4201 | // Done. Put the value in xmm0 into the value of the allocated heap |
| 4202 | // number. |
| 4203 | __ bind(&done); |
| 4204 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), xmm0); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4205 | __ StoreToSafepointRegisterSlot(reg, reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4206 | } |
| 4207 | |
| 4208 | |
| 4209 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 4210 | class DeferredNumberTagD: public LDeferredCode { |
| 4211 | public: |
| 4212 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 4213 | : LDeferredCode(codegen), instr_(instr) { } |
| 4214 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4215 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4216 | private: |
| 4217 | LNumberTagD* instr_; |
| 4218 | }; |
| 4219 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4220 | XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4221 | Register reg = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4222 | Register tmp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4223 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4224 | DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4225 | if (FLAG_inline_new) { |
| 4226 | __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); |
| 4227 | } else { |
| 4228 | __ jmp(deferred->entry()); |
| 4229 | } |
| 4230 | __ bind(deferred->exit()); |
| 4231 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); |
| 4232 | } |
| 4233 | |
| 4234 | |
| 4235 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 4236 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4237 | // result register contain a valid pointer because it is already |
| 4238 | // contained in the register pointer map. |
| 4239 | Register reg = ToRegister(instr->result()); |
| 4240 | __ Set(reg, Immediate(0)); |
| 4241 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 4242 | PushSafepointRegistersScope scope(this); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4243 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4244 | // the environment's HContext or HInlinedContext value. |
| 4245 | // They only call Runtime::kAllocateHeapNumber. |
| 4246 | // The corresponding HChange instructions are added in a phase that does |
| 4247 | // not have easy access to the local context. |
| 4248 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4249 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4250 | RecordSafepointWithRegisters( |
| 4251 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 4252 | __ StoreToSafepointRegisterSlot(reg, eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4253 | } |
| 4254 | |
| 4255 | |
| 4256 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4257 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4258 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4259 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
| 4260 | __ SmiTag(ToRegister(input)); |
| 4261 | } |
| 4262 | |
| 4263 | |
| 4264 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4265 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4266 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 4267 | if (instr->needs_check()) { |
| 4268 | __ test(ToRegister(input), Immediate(kSmiTagMask)); |
| 4269 | DeoptimizeIf(not_zero, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4270 | } else { |
| 4271 | if (FLAG_debug_code) { |
| 4272 | __ AbortIfNotSmi(ToRegister(input)); |
| 4273 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4274 | } |
| 4275 | __ SmiUntag(ToRegister(input)); |
| 4276 | } |
| 4277 | |
| 4278 | |
| 4279 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4280 | Register temp_reg, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4281 | XMMRegister result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4282 | bool deoptimize_on_undefined, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4283 | bool deoptimize_on_minus_zero, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4284 | LEnvironment* env) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4285 | Label load_smi, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4286 | |
| 4287 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4288 | __ JumpIfSmi(input_reg, &load_smi, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4289 | |
| 4290 | // Heap number map check. |
| 4291 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4292 | factory()->heap_number_map()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4293 | if (deoptimize_on_undefined) { |
| 4294 | DeoptimizeIf(not_equal, env); |
| 4295 | } else { |
| 4296 | Label heap_number; |
| 4297 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4298 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4299 | __ cmp(input_reg, factory()->undefined_value()); |
| 4300 | DeoptimizeIf(not_equal, env); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4301 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4302 | // Convert undefined to NaN. |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4303 | ExternalReference nan = |
| 4304 | ExternalReference::address_of_canonical_non_hole_nan(); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4305 | __ movdbl(result_reg, Operand::StaticVariable(nan)); |
| 4306 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4307 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4308 | __ bind(&heap_number); |
| 4309 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4310 | // Heap number to XMM conversion. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4311 | __ movdbl(result_reg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4312 | if (deoptimize_on_minus_zero) { |
| 4313 | XMMRegister xmm_scratch = xmm0; |
| 4314 | __ xorps(xmm_scratch, xmm_scratch); |
| 4315 | __ ucomisd(result_reg, xmm_scratch); |
| 4316 | __ j(not_zero, &done, Label::kNear); |
| 4317 | __ movmskpd(temp_reg, result_reg); |
| 4318 | __ test_b(temp_reg, 1); |
| 4319 | DeoptimizeIf(not_zero, env); |
| 4320 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4321 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4322 | |
| 4323 | // Smi to XMM conversion |
| 4324 | __ bind(&load_smi); |
| 4325 | __ SmiUntag(input_reg); // Untag smi before converting to float. |
| 4326 | __ cvtsi2sd(result_reg, Operand(input_reg)); |
| 4327 | __ SmiTag(input_reg); // Retag smi. |
| 4328 | __ bind(&done); |
| 4329 | } |
| 4330 | |
| 4331 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4332 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4333 | Label done, heap_number; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4334 | Register input_reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4335 | |
| 4336 | // Heap number map check. |
| 4337 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4338 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4339 | |
| 4340 | if (instr->truncating()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4341 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4342 | // Check for undefined. Undefined is converted to zero for truncating |
| 4343 | // conversions. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4344 | __ cmp(input_reg, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4345 | DeoptimizeIf(not_equal, instr->environment()); |
| 4346 | __ mov(input_reg, 0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4347 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4348 | |
| 4349 | __ bind(&heap_number); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4350 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4351 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4352 | Label convert; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4353 | // Use more powerful conversion when sse3 is available. |
| 4354 | // Load x87 register with heap number. |
| 4355 | __ fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4356 | // Get exponent alone and check for too-big exponent. |
| 4357 | __ mov(input_reg, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 4358 | __ and_(input_reg, HeapNumber::kExponentMask); |
| 4359 | const uint32_t kTooBigExponent = |
| 4360 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4361 | __ cmp(Operand(input_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4362 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4363 | // Pop FPU stack before deoptimizing. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4364 | __ fstp(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4365 | DeoptimizeIf(no_condition, instr->environment()); |
| 4366 | |
| 4367 | // Reserve space for 64 bit answer. |
| 4368 | __ bind(&convert); |
| 4369 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4370 | // Do conversion, which cannot fail because we checked the exponent. |
| 4371 | __ fisttp_d(Operand(esp, 0)); |
| 4372 | __ mov(input_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4373 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4374 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4375 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4376 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4377 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4378 | __ cmp(input_reg, 0x80000000u); |
| 4379 | __ j(not_equal, &done); |
| 4380 | // Check if the input was 0x8000000 (kMinInt). |
| 4381 | // If no, then we got an overflow and we deoptimize. |
| 4382 | ExternalReference min_int = ExternalReference::address_of_min_int(); |
| 4383 | __ movdbl(xmm_temp, Operand::StaticVariable(min_int)); |
| 4384 | __ ucomisd(xmm_temp, xmm0); |
| 4385 | DeoptimizeIf(not_equal, instr->environment()); |
| 4386 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4387 | } |
| 4388 | } else { |
| 4389 | // Deoptimize if we don't have a heap number. |
| 4390 | DeoptimizeIf(not_equal, instr->environment()); |
| 4391 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4392 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4393 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4394 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4395 | __ cvtsi2sd(xmm_temp, Operand(input_reg)); |
| 4396 | __ ucomisd(xmm0, xmm_temp); |
| 4397 | DeoptimizeIf(not_equal, instr->environment()); |
| 4398 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4399 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4400 | __ test(input_reg, Operand(input_reg)); |
| 4401 | __ j(not_zero, &done); |
| 4402 | __ movmskpd(input_reg, xmm0); |
| 4403 | __ and_(input_reg, 1); |
| 4404 | DeoptimizeIf(not_zero, instr->environment()); |
| 4405 | } |
| 4406 | } |
| 4407 | __ bind(&done); |
| 4408 | } |
| 4409 | |
| 4410 | |
| 4411 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4412 | class DeferredTaggedToI: public LDeferredCode { |
| 4413 | public: |
| 4414 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4415 | : LDeferredCode(codegen), instr_(instr) { } |
| 4416 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 4417 | virtual LInstruction* instr() { return instr_; } |
| 4418 | private: |
| 4419 | LTaggedToI* instr_; |
| 4420 | }; |
| 4421 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4422 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4423 | ASSERT(input->IsRegister()); |
| 4424 | ASSERT(input->Equals(instr->result())); |
| 4425 | |
| 4426 | Register input_reg = ToRegister(input); |
| 4427 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4428 | DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4429 | |
| 4430 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4431 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4432 | |
| 4433 | // Smi to int32 conversion |
| 4434 | __ SmiUntag(input_reg); // Untag smi. |
| 4435 | |
| 4436 | __ bind(deferred->exit()); |
| 4437 | } |
| 4438 | |
| 4439 | |
| 4440 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4441 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4442 | ASSERT(input->IsRegister()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4443 | LOperand* temp = instr->TempAt(0); |
| 4444 | ASSERT(temp == NULL || temp->IsRegister()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4445 | LOperand* result = instr->result(); |
| 4446 | ASSERT(result->IsDoubleRegister()); |
| 4447 | |
| 4448 | Register input_reg = ToRegister(input); |
| 4449 | XMMRegister result_reg = ToDoubleRegister(result); |
| 4450 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4451 | bool deoptimize_on_minus_zero = |
| 4452 | instr->hydrogen()->deoptimize_on_minus_zero(); |
| 4453 | Register temp_reg = deoptimize_on_minus_zero ? ToRegister(temp) : no_reg; |
| 4454 | |
| 4455 | EmitNumberUntagD(input_reg, |
| 4456 | temp_reg, |
| 4457 | result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4458 | instr->hydrogen()->deoptimize_on_undefined(), |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4459 | deoptimize_on_minus_zero, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4460 | instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4461 | } |
| 4462 | |
| 4463 | |
| 4464 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4465 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4466 | ASSERT(input->IsDoubleRegister()); |
| 4467 | LOperand* result = instr->result(); |
| 4468 | ASSERT(result->IsRegister()); |
| 4469 | |
| 4470 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4471 | Register result_reg = ToRegister(result); |
| 4472 | |
| 4473 | if (instr->truncating()) { |
| 4474 | // Performs a truncating conversion of a floating point number as used by |
| 4475 | // the JS bitwise operations. |
| 4476 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4477 | __ cmp(result_reg, 0x80000000u); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4478 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4479 | // This will deoptimize if the exponent of the input in out of range. |
| 4480 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4481 | Label convert, done; |
| 4482 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4483 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4484 | __ movdbl(Operand(esp, 0), input_reg); |
| 4485 | // Get exponent alone and check for too-big exponent. |
| 4486 | __ mov(result_reg, Operand(esp, sizeof(int32_t))); |
| 4487 | __ and_(result_reg, HeapNumber::kExponentMask); |
| 4488 | const uint32_t kTooBigExponent = |
| 4489 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4490 | __ cmp(Operand(result_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4491 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4492 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4493 | DeoptimizeIf(no_condition, instr->environment()); |
| 4494 | __ bind(&convert); |
| 4495 | // Do conversion, which cannot fail because we checked the exponent. |
| 4496 | __ fld_d(Operand(esp, 0)); |
| 4497 | __ fisttp_d(Operand(esp, 0)); |
| 4498 | __ mov(result_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4499 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4500 | __ bind(&done); |
| 4501 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4502 | Label done; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4503 | Register temp_reg = ToRegister(instr->TempAt(0)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4504 | XMMRegister xmm_scratch = xmm0; |
| 4505 | |
| 4506 | // If cvttsd2si succeeded, we're done. Otherwise, we attempt |
| 4507 | // manual conversion. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4508 | __ j(not_equal, &done, Label::kNear); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4509 | |
| 4510 | // Get high 32 bits of the input in result_reg and temp_reg. |
| 4511 | __ pshufd(xmm_scratch, input_reg, 1); |
| 4512 | __ movd(Operand(temp_reg), xmm_scratch); |
| 4513 | __ mov(result_reg, temp_reg); |
| 4514 | |
| 4515 | // Prepare negation mask in temp_reg. |
| 4516 | __ sar(temp_reg, kBitsPerInt - 1); |
| 4517 | |
| 4518 | // Extract the exponent from result_reg and subtract adjusted |
| 4519 | // bias from it. The adjustment is selected in a way such that |
| 4520 | // when the difference is zero, the answer is in the low 32 bits |
| 4521 | // of the input, otherwise a shift has to be performed. |
| 4522 | __ shr(result_reg, HeapNumber::kExponentShift); |
| 4523 | __ and_(result_reg, |
| 4524 | HeapNumber::kExponentMask >> HeapNumber::kExponentShift); |
| 4525 | __ sub(Operand(result_reg), |
| 4526 | Immediate(HeapNumber::kExponentBias + |
| 4527 | HeapNumber::kExponentBits + |
| 4528 | HeapNumber::kMantissaBits)); |
| 4529 | // Don't handle big (> kMantissaBits + kExponentBits == 63) or |
| 4530 | // special exponents. |
| 4531 | DeoptimizeIf(greater, instr->environment()); |
| 4532 | |
| 4533 | // Zero out the sign and the exponent in the input (by shifting |
| 4534 | // it to the left) and restore the implicit mantissa bit, |
| 4535 | // i.e. convert the input to unsigned int64 shifted left by |
| 4536 | // kExponentBits. |
| 4537 | ExternalReference minus_zero = ExternalReference::address_of_minus_zero(); |
| 4538 | // Minus zero has the most significant bit set and the other |
| 4539 | // bits cleared. |
| 4540 | __ movdbl(xmm_scratch, Operand::StaticVariable(minus_zero)); |
| 4541 | __ psllq(input_reg, HeapNumber::kExponentBits); |
| 4542 | __ por(input_reg, xmm_scratch); |
| 4543 | |
| 4544 | // Get the amount to shift the input right in xmm_scratch. |
| 4545 | __ neg(result_reg); |
| 4546 | __ movd(xmm_scratch, Operand(result_reg)); |
| 4547 | |
| 4548 | // Shift the input right and extract low 32 bits. |
| 4549 | __ psrlq(input_reg, xmm_scratch); |
| 4550 | __ movd(Operand(result_reg), input_reg); |
| 4551 | |
| 4552 | // Use the prepared mask in temp_reg to negate the result if necessary. |
| 4553 | __ xor_(result_reg, Operand(temp_reg)); |
| 4554 | __ sub(result_reg, Operand(temp_reg)); |
| 4555 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4556 | } |
| 4557 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4558 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4559 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4560 | __ cvtsi2sd(xmm0, Operand(result_reg)); |
| 4561 | __ ucomisd(xmm0, input_reg); |
| 4562 | DeoptimizeIf(not_equal, instr->environment()); |
| 4563 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4564 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4565 | // The integer converted back is equal to the original. We |
| 4566 | // only have to test if we got -0 as an input. |
| 4567 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4568 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4569 | __ movmskpd(result_reg, input_reg); |
| 4570 | // Bit 0 contains the sign of the double in input_reg. |
| 4571 | // If input was positive, we are ok and return 0, otherwise |
| 4572 | // deoptimize. |
| 4573 | __ and_(result_reg, 1); |
| 4574 | DeoptimizeIf(not_zero, instr->environment()); |
| 4575 | } |
| 4576 | __ bind(&done); |
| 4577 | } |
| 4578 | } |
| 4579 | |
| 4580 | |
| 4581 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4582 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4583 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4584 | DeoptimizeIf(not_zero, instr->environment()); |
| 4585 | } |
| 4586 | |
| 4587 | |
| 4588 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
| 4589 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4590 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4591 | DeoptimizeIf(zero, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4592 | } |
| 4593 | |
| 4594 | |
| 4595 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4596 | Register input = ToRegister(instr->InputAt(0)); |
| 4597 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4598 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4599 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4600 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4601 | if (instr->hydrogen()->is_interval_check()) { |
| 4602 | InstanceType first; |
| 4603 | InstanceType last; |
| 4604 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4605 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4606 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4607 | static_cast<int8_t>(first)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4608 | |
| 4609 | // If there is only one type in the interval check for equality. |
| 4610 | if (first == last) { |
| 4611 | DeoptimizeIf(not_equal, instr->environment()); |
| 4612 | } else { |
| 4613 | DeoptimizeIf(below, instr->environment()); |
| 4614 | // Omit check for the last type. |
| 4615 | if (last != LAST_TYPE) { |
| 4616 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4617 | static_cast<int8_t>(last)); |
| 4618 | DeoptimizeIf(above, instr->environment()); |
| 4619 | } |
| 4620 | } |
| 4621 | } else { |
| 4622 | uint8_t mask; |
| 4623 | uint8_t tag; |
| 4624 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4625 | |
| 4626 | if (IsPowerOf2(mask)) { |
| 4627 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 4628 | __ test_b(FieldOperand(temp, Map::kInstanceTypeOffset), mask); |
| 4629 | DeoptimizeIf(tag == 0 ? not_zero : zero, instr->environment()); |
| 4630 | } else { |
| 4631 | __ movzx_b(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 4632 | __ and_(temp, mask); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 4633 | __ cmp(temp, tag); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4634 | DeoptimizeIf(not_equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4635 | } |
| 4636 | } |
| 4637 | } |
| 4638 | |
| 4639 | |
| 4640 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4641 | Handle<JSFunction> target = instr->hydrogen()->target(); |
| 4642 | if (isolate()->heap()->InNewSpace(*target)) { |
| 4643 | Register reg = ToRegister(instr->value()); |
| 4644 | Handle<JSGlobalPropertyCell> cell = |
| 4645 | isolate()->factory()->NewJSGlobalPropertyCell(target); |
| 4646 | __ cmp(reg, Operand::Cell(cell)); |
| 4647 | } else { |
| 4648 | Operand operand = ToOperand(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4649 | __ cmp(operand, target); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4650 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4651 | DeoptimizeIf(not_equal, instr->environment()); |
| 4652 | } |
| 4653 | |
| 4654 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4655 | void LCodeGen::DoCheckMapCommon(Register reg, |
| 4656 | Handle<Map> map, |
| 4657 | CompareMapMode mode, |
| 4658 | LEnvironment* env) { |
| 4659 | Label success; |
| 4660 | __ CompareMap(reg, map, &success, mode); |
| 4661 | DeoptimizeIf(not_equal, env); |
| 4662 | __ bind(&success); |
| 4663 | } |
| 4664 | |
| 4665 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4666 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4667 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4668 | ASSERT(input->IsRegister()); |
| 4669 | Register reg = ToRegister(input); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4670 | |
| 4671 | Label success; |
| 4672 | SmallMapList* map_set = instr->hydrogen()->map_set(); |
| 4673 | for (int i = 0; i < map_set->length() - 1; i++) { |
| 4674 | Handle<Map> map = map_set->at(i); |
| 4675 | __ CompareMap(reg, map, &success, REQUIRE_EXACT_MAP); |
| 4676 | __ j(equal, &success); |
| 4677 | } |
| 4678 | Handle<Map> map = map_set->last(); |
| 4679 | DoCheckMapCommon(reg, map, REQUIRE_EXACT_MAP, instr->environment()); |
| 4680 | __ bind(&success); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4681 | } |
| 4682 | |
| 4683 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4684 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 4685 | XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 4686 | Register result_reg = ToRegister(instr->result()); |
| 4687 | __ ClampDoubleToUint8(value_reg, xmm0, result_reg); |
| 4688 | } |
| 4689 | |
| 4690 | |
| 4691 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 4692 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4693 | Register value_reg = ToRegister(instr->result()); |
| 4694 | __ ClampUint8(value_reg); |
| 4695 | } |
| 4696 | |
| 4697 | |
| 4698 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 4699 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4700 | Register input_reg = ToRegister(instr->unclamped()); |
| 4701 | Label is_smi, done, heap_number; |
| 4702 | |
| 4703 | __ JumpIfSmi(input_reg, &is_smi); |
| 4704 | |
| 4705 | // Check for heap number |
| 4706 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4707 | factory()->heap_number_map()); |
| 4708 | __ j(equal, &heap_number, Label::kNear); |
| 4709 | |
| 4710 | // Check for undefined. Undefined is converted to zero for clamping |
| 4711 | // conversions. |
| 4712 | __ cmp(input_reg, factory()->undefined_value()); |
| 4713 | DeoptimizeIf(not_equal, instr->environment()); |
| 4714 | __ mov(input_reg, 0); |
| 4715 | __ jmp(&done, Label::kNear); |
| 4716 | |
| 4717 | // Heap number |
| 4718 | __ bind(&heap_number); |
| 4719 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4720 | __ ClampDoubleToUint8(xmm0, xmm1, input_reg); |
| 4721 | __ jmp(&done, Label::kNear); |
| 4722 | |
| 4723 | // smi |
| 4724 | __ bind(&is_smi); |
| 4725 | __ SmiUntag(input_reg); |
| 4726 | __ ClampUint8(input_reg); |
| 4727 | |
| 4728 | __ bind(&done); |
| 4729 | } |
| 4730 | |
| 4731 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4732 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4733 | Register reg = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4734 | |
| 4735 | Handle<JSObject> holder = instr->holder(); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4736 | Handle<JSObject> current_prototype = instr->prototype(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4737 | |
| 4738 | // Load prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4739 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4740 | |
| 4741 | // Check prototype maps up to the holder. |
| 4742 | while (!current_prototype.is_identical_to(holder)) { |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4743 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4744 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
| 4745 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4746 | current_prototype = |
| 4747 | Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype())); |
| 4748 | // Load next prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4749 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4750 | } |
| 4751 | |
| 4752 | // Check the holder map. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4753 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4754 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4755 | } |
| 4756 | |
| 4757 | |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4758 | void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
| 4759 | class DeferredAllocateObject: public LDeferredCode { |
| 4760 | public: |
| 4761 | DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
| 4762 | : LDeferredCode(codegen), instr_(instr) { } |
| 4763 | virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
| 4764 | virtual LInstruction* instr() { return instr_; } |
| 4765 | private: |
| 4766 | LAllocateObject* instr_; |
| 4767 | }; |
| 4768 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 4769 | DeferredAllocateObject* deferred = |
| 4770 | new(zone()) DeferredAllocateObject(this, instr); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4771 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4772 | Register result = ToRegister(instr->result()); |
| 4773 | Register scratch = ToRegister(instr->TempAt(0)); |
| 4774 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
| 4775 | Handle<Map> initial_map(constructor->initial_map()); |
| 4776 | int instance_size = initial_map->instance_size(); |
| 4777 | ASSERT(initial_map->pre_allocated_property_fields() + |
| 4778 | initial_map->unused_property_fields() - |
| 4779 | initial_map->inobject_properties() == 0); |
| 4780 | |
| 4781 | // Allocate memory for the object. The initial map might change when |
| 4782 | // the constructor's prototype changes, but instance size and property |
| 4783 | // counts remain unchanged (if slack tracking finished). |
| 4784 | ASSERT(!constructor->shared()->IsInobjectSlackTrackingInProgress()); |
| 4785 | __ AllocateInNewSpace(instance_size, |
| 4786 | result, |
| 4787 | no_reg, |
| 4788 | scratch, |
| 4789 | deferred->entry(), |
| 4790 | TAG_OBJECT); |
| 4791 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4792 | __ bind(deferred->exit()); |
| 4793 | if (FLAG_debug_code) { |
| 4794 | Label is_in_new_space; |
| 4795 | __ JumpIfInNewSpace(result, scratch, &is_in_new_space); |
| 4796 | __ Abort("Allocated object is not in new-space"); |
| 4797 | __ bind(&is_in_new_space); |
| 4798 | } |
| 4799 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4800 | // Load the initial map. |
| 4801 | Register map = scratch; |
| 4802 | __ LoadHeapObject(scratch, constructor); |
| 4803 | __ mov(map, FieldOperand(scratch, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4804 | |
| 4805 | if (FLAG_debug_code) { |
| 4806 | __ AbortIfSmi(map); |
| 4807 | __ cmpb(FieldOperand(map, Map::kInstanceSizeOffset), |
| 4808 | instance_size >> kPointerSizeLog2); |
| 4809 | __ Assert(equal, "Unexpected instance size"); |
| 4810 | __ cmpb(FieldOperand(map, Map::kPreAllocatedPropertyFieldsOffset), |
| 4811 | initial_map->pre_allocated_property_fields()); |
| 4812 | __ Assert(equal, "Unexpected pre-allocated property fields count"); |
| 4813 | __ cmpb(FieldOperand(map, Map::kUnusedPropertyFieldsOffset), |
| 4814 | initial_map->unused_property_fields()); |
| 4815 | __ Assert(equal, "Unexpected unused property fields count"); |
| 4816 | __ cmpb(FieldOperand(map, Map::kInObjectPropertiesOffset), |
| 4817 | initial_map->inobject_properties()); |
| 4818 | __ Assert(equal, "Unexpected in-object property fields count"); |
| 4819 | } |
| 4820 | |
| 4821 | // Initialize map and fields of the newly allocated object. |
| 4822 | ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE); |
| 4823 | __ mov(FieldOperand(result, JSObject::kMapOffset), map); |
| 4824 | __ mov(scratch, factory()->empty_fixed_array()); |
| 4825 | __ mov(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 4826 | __ mov(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 4827 | if (initial_map->inobject_properties() != 0) { |
| 4828 | __ mov(scratch, factory()->undefined_value()); |
| 4829 | for (int i = 0; i < initial_map->inobject_properties(); i++) { |
| 4830 | int property_offset = JSObject::kHeaderSize + i * kPointerSize; |
| 4831 | __ mov(FieldOperand(result, property_offset), scratch); |
| 4832 | } |
| 4833 | } |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4834 | } |
| 4835 | |
| 4836 | |
| 4837 | void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) { |
| 4838 | Register result = ToRegister(instr->result()); |
| 4839 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4840 | Handle<Map> initial_map(constructor->initial_map()); |
| 4841 | int instance_size = initial_map->instance_size(); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4842 | |
| 4843 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4844 | // result register contain a valid pointer because it is already |
| 4845 | // contained in the register pointer map. |
| 4846 | __ Set(result, Immediate(0)); |
| 4847 | |
| 4848 | PushSafepointRegistersScope scope(this); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4849 | __ push(Immediate(Smi::FromInt(instance_size))); |
| 4850 | CallRuntimeFromDeferred( |
| 4851 | Runtime::kAllocateInNewSpace, 1, instr, instr->context()); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4852 | __ StoreToSafepointRegisterSlot(result, eax); |
| 4853 | } |
| 4854 | |
| 4855 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4856 | void LCodeGen::DoArrayLiteral(LArrayLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4857 | ASSERT(ToRegister(instr->context()).is(esi)); |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4858 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4859 | ElementsKind boilerplate_elements_kind = |
| 4860 | instr->hydrogen()->boilerplate_elements_kind(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4861 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4862 | // Deopt if the array literal boilerplate ElementsKind is of a type different |
| 4863 | // 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] | 4864 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 4865 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 4866 | boilerplate_elements_kind, true)) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4867 | __ LoadHeapObject(eax, instr->hydrogen()->boilerplate_object()); |
| 4868 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 4869 | // Load the map's "bit field 2". We only need the first byte, |
| 4870 | // but the following masking takes care of that anyway. |
| 4871 | __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset)); |
| 4872 | // Retrieve elements_kind from bit field 2. |
| 4873 | __ and_(ebx, Map::kElementsKindMask); |
| 4874 | __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 4875 | DeoptimizeIf(not_equal, instr->environment()); |
| 4876 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4877 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4878 | // Set up the parameters to the stub/runtime call. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4879 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4880 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4881 | // Boilerplate already exists, constant elements are never accessed. |
| 4882 | // Pass an empty fixed array. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 4883 | __ push(Immediate(isolate()->factory()->empty_fixed_array())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4884 | |
| 4885 | // Pick the right runtime function or stub to call. |
| 4886 | int length = instr->hydrogen()->length(); |
| 4887 | if (instr->hydrogen()->IsCopyOnWrite()) { |
| 4888 | ASSERT(instr->hydrogen()->depth() == 1); |
| 4889 | FastCloneShallowArrayStub::Mode mode = |
| 4890 | FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS; |
| 4891 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4892 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4893 | } else if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4894 | CallRuntime(Runtime::kCreateArrayLiteral, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4895 | } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4896 | CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4897 | } else { |
| 4898 | FastCloneShallowArrayStub::Mode mode = |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4899 | boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS |
| 4900 | ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS |
| 4901 | : FastCloneShallowArrayStub::CLONE_ELEMENTS; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4902 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4903 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4904 | } |
| 4905 | } |
| 4906 | |
| 4907 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4908 | void LCodeGen::EmitDeepCopy(Handle<JSObject> object, |
| 4909 | Register result, |
| 4910 | Register source, |
| 4911 | int* offset) { |
| 4912 | ASSERT(!source.is(ecx)); |
| 4913 | ASSERT(!result.is(ecx)); |
| 4914 | |
| 4915 | if (FLAG_debug_code) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4916 | __ LoadHeapObject(ecx, object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4917 | __ cmp(source, ecx); |
| 4918 | __ Assert(equal, "Unexpected object literal boilerplate"); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 4919 | __ mov(ecx, FieldOperand(source, HeapObject::kMapOffset)); |
| 4920 | __ cmp(ecx, Handle<Map>(object->map())); |
| 4921 | __ Assert(equal, "Unexpected boilerplate map"); |
| 4922 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 4923 | __ and_(ecx, Map::kElementsKindMask); |
| 4924 | __ cmp(ecx, object->GetElementsKind() << Map::kElementsKindShift); |
| 4925 | __ Assert(equal, "Unexpected boilerplate elements kind"); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4926 | } |
| 4927 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4928 | // Only elements backing stores for non-COW arrays need to be copied. |
| 4929 | Handle<FixedArrayBase> elements(object->elements()); |
| 4930 | bool has_elements = elements->length() > 0 && |
| 4931 | elements->map() != isolate()->heap()->fixed_cow_array_map(); |
| 4932 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4933 | // Increase the offset so that subsequent objects end up right after |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4934 | // this object and its backing store. |
| 4935 | int object_offset = *offset; |
| 4936 | int object_size = object->map()->instance_size(); |
| 4937 | int elements_offset = *offset + object_size; |
| 4938 | int elements_size = has_elements ? elements->Size() : 0; |
| 4939 | *offset += object_size + elements_size; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4940 | |
| 4941 | // Copy object header. |
| 4942 | ASSERT(object->properties()->length() == 0); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4943 | int inobject_properties = object->map()->inobject_properties(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4944 | int header_size = object_size - inobject_properties * kPointerSize; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4945 | for (int i = 0; i < header_size; i += kPointerSize) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4946 | if (has_elements && i == JSObject::kElementsOffset) { |
| 4947 | __ lea(ecx, Operand(result, elements_offset)); |
| 4948 | } else { |
| 4949 | __ mov(ecx, FieldOperand(source, i)); |
| 4950 | } |
| 4951 | __ mov(FieldOperand(result, object_offset + i), ecx); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4952 | } |
| 4953 | |
| 4954 | // Copy in-object properties. |
| 4955 | for (int i = 0; i < inobject_properties; i++) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4956 | int total_offset = object_offset + object->GetInObjectPropertyOffset(i); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4957 | Handle<Object> value = Handle<Object>(object->InObjectPropertyAt(i)); |
| 4958 | if (value->IsJSObject()) { |
| 4959 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4960 | __ lea(ecx, Operand(result, *offset)); |
| 4961 | __ mov(FieldOperand(result, total_offset), ecx); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4962 | __ LoadHeapObject(source, value_object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4963 | EmitDeepCopy(value_object, result, source, offset); |
| 4964 | } else if (value->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4965 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4966 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4967 | } else { |
| 4968 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4969 | } |
| 4970 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4971 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4972 | if (has_elements) { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4973 | // Copy elements backing store header. |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4974 | __ LoadHeapObject(source, elements); |
| 4975 | for (int i = 0; i < FixedArray::kHeaderSize; i += kPointerSize) { |
| 4976 | __ mov(ecx, FieldOperand(source, i)); |
| 4977 | __ mov(FieldOperand(result, elements_offset + i), ecx); |
| 4978 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4979 | |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4980 | // Copy elements backing store content. |
| 4981 | int elements_length = elements->length(); |
| 4982 | if (elements->IsFixedDoubleArray()) { |
| 4983 | Handle<FixedDoubleArray> double_array = |
| 4984 | Handle<FixedDoubleArray>::cast(elements); |
| 4985 | for (int i = 0; i < elements_length; i++) { |
| 4986 | int64_t value = double_array->get_representation(i); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame^] | 4987 | int32_t value_low = static_cast<int32_t>(value & 0xFFFFFFFF); |
| 4988 | int32_t value_high = static_cast<int32_t>(value >> 32); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4989 | int total_offset = |
| 4990 | elements_offset + FixedDoubleArray::OffsetOfElementAt(i); |
| 4991 | __ mov(FieldOperand(result, total_offset), Immediate(value_low)); |
| 4992 | __ mov(FieldOperand(result, total_offset + 4), Immediate(value_high)); |
| 4993 | } |
| 4994 | } else if (elements->IsFixedArray()) { |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 4995 | Handle<FixedArray> fast_elements = Handle<FixedArray>::cast(elements); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4996 | for (int i = 0; i < elements_length; i++) { |
| 4997 | int total_offset = elements_offset + FixedArray::OffsetOfElementAt(i); |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 4998 | Handle<Object> value(fast_elements->get(i)); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4999 | if (value->IsJSObject()) { |
| 5000 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 5001 | __ lea(ecx, Operand(result, *offset)); |
| 5002 | __ mov(FieldOperand(result, total_offset), ecx); |
| 5003 | __ LoadHeapObject(source, value_object); |
| 5004 | EmitDeepCopy(value_object, result, source, offset); |
| 5005 | } else if (value->IsHeapObject()) { |
| 5006 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
| 5007 | __ mov(FieldOperand(result, total_offset), ecx); |
| 5008 | } else { |
| 5009 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 5010 | } |
| 5011 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5012 | } else { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 5013 | UNREACHABLE(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5014 | } |
| 5015 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5016 | } |
| 5017 | |
| 5018 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5019 | void LCodeGen::DoFastLiteral(LFastLiteral* instr) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5020 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 5021 | int size = instr->hydrogen()->total_size(); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 5022 | ElementsKind boilerplate_elements_kind = |
| 5023 | instr->hydrogen()->boilerplate()->GetElementsKind(); |
| 5024 | |
| 5025 | // Deopt if the literal boilerplate ElementsKind is of a type different than |
| 5026 | // 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] | 5027 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 5028 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 5029 | boilerplate_elements_kind, true)) { |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 5030 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
| 5031 | __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset)); |
| 5032 | // Load the map's "bit field 2". We only need the first byte, |
| 5033 | // but the following masking takes care of that anyway. |
| 5034 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 5035 | // Retrieve elements_kind from bit field 2. |
| 5036 | __ and_(ecx, Map::kElementsKindMask); |
| 5037 | __ cmp(ecx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 5038 | DeoptimizeIf(not_equal, instr->environment()); |
| 5039 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5040 | |
| 5041 | // Allocate all objects that are part of the literal in one big |
| 5042 | // allocation. This avoids multiple limit checks. |
| 5043 | Label allocated, runtime_allocate; |
| 5044 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 5045 | __ jmp(&allocated); |
| 5046 | |
| 5047 | __ bind(&runtime_allocate); |
| 5048 | __ push(Immediate(Smi::FromInt(size))); |
| 5049 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 5050 | |
| 5051 | __ bind(&allocated); |
| 5052 | int offset = 0; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5053 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5054 | EmitDeepCopy(instr->hydrogen()->boilerplate(), eax, ebx, &offset); |
| 5055 | ASSERT_EQ(size, offset); |
| 5056 | } |
| 5057 | |
| 5058 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 5059 | void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 5060 | ASSERT(ToRegister(instr->context()).is(esi)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 5061 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5062 | Handle<FixedArray> constant_properties = |
| 5063 | instr->hydrogen()->constant_properties(); |
| 5064 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5065 | // Set up the parameters to the stub/runtime call. |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 5066 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5067 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5068 | __ push(Immediate(constant_properties)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5069 | int flags = instr->hydrogen()->fast_elements() |
| 5070 | ? ObjectLiteral::kFastElements |
| 5071 | : ObjectLiteral::kNoFlags; |
| 5072 | flags |= instr->hydrogen()->has_function() |
| 5073 | ? ObjectLiteral::kHasFunction |
| 5074 | : ObjectLiteral::kNoFlags; |
| 5075 | __ push(Immediate(Smi::FromInt(flags))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5076 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5077 | // Pick the right runtime function or stub to call. |
| 5078 | int properties_count = constant_properties->length() / 2; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5079 | if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5080 | CallRuntime(Runtime::kCreateObjectLiteral, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5081 | } else if (flags != ObjectLiteral::kFastElements || |
| 5082 | properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5083 | CallRuntime(Runtime::kCreateObjectLiteralShallow, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 5084 | } else { |
| 5085 | FastCloneShallowObjectStub stub(properties_count); |
| 5086 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5087 | } |
| 5088 | } |
| 5089 | |
| 5090 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5091 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
| 5092 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 5093 | __ push(eax); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5094 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5095 | } |
| 5096 | |
| 5097 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5098 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5099 | ASSERT(ToRegister(instr->context()).is(esi)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5100 | Label materialized; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5101 | // Registers will be used as follows: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5102 | // ecx = literals array. |
| 5103 | // ebx = regexp literal. |
| 5104 | // eax = regexp literal clone. |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5105 | // esi = context. |
yangguo@chromium.org | 9c741c8 | 2012-06-28 15:04:22 +0000 | [diff] [blame] | 5106 | int literal_offset = |
| 5107 | FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index()); |
| 5108 | __ LoadHeapObject(ecx, instr->hydrogen()->literals()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5109 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5110 | __ cmp(ebx, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5111 | __ j(not_equal, &materialized, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5112 | |
| 5113 | // Create regexp literal using runtime function |
| 5114 | // Result will be in eax. |
| 5115 | __ push(ecx); |
| 5116 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 5117 | __ push(Immediate(instr->hydrogen()->pattern())); |
| 5118 | __ push(Immediate(instr->hydrogen()->flags())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5119 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5120 | __ mov(ebx, eax); |
| 5121 | |
| 5122 | __ bind(&materialized); |
| 5123 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 5124 | Label allocated, runtime_allocate; |
| 5125 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 5126 | __ jmp(&allocated); |
| 5127 | |
| 5128 | __ bind(&runtime_allocate); |
| 5129 | __ push(ebx); |
| 5130 | __ push(Immediate(Smi::FromInt(size))); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5131 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5132 | __ pop(ebx); |
| 5133 | |
| 5134 | __ bind(&allocated); |
| 5135 | // Copy the content into the newly allocated memory. |
| 5136 | // (Unroll copy loop once for better throughput). |
| 5137 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 5138 | __ mov(edx, FieldOperand(ebx, i)); |
| 5139 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 5140 | __ mov(FieldOperand(eax, i), edx); |
| 5141 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 5142 | } |
| 5143 | if ((size % (2 * kPointerSize)) != 0) { |
| 5144 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 5145 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 5146 | } |
| 5147 | } |
| 5148 | |
| 5149 | |
| 5150 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5151 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5152 | // Use the fast case closure allocation code that allocates in new |
| 5153 | // space for nested functions that don't need literals cloning. |
| 5154 | Handle<SharedFunctionInfo> shared_info = instr->shared_info(); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 5155 | bool pretenure = instr->hydrogen()->pretenure(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5156 | if (!pretenure && shared_info->num_literals() == 0) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5157 | FastNewClosureStub stub(shared_info->language_mode()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5158 | __ push(Immediate(shared_info)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5159 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5160 | } else { |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5161 | __ push(esi); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5162 | __ push(Immediate(shared_info)); |
| 5163 | __ push(Immediate(pretenure |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5164 | ? factory()->true_value() |
| 5165 | : factory()->false_value())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5166 | CallRuntime(Runtime::kNewClosure, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5167 | } |
| 5168 | } |
| 5169 | |
| 5170 | |
| 5171 | void LCodeGen::DoTypeof(LTypeof* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5172 | LOperand* input = instr->InputAt(1); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5173 | EmitPushTaggedOperand(input); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5174 | CallRuntime(Runtime::kTypeof, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5175 | } |
| 5176 | |
| 5177 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5178 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 5179 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5180 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5181 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5182 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 5183 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 5184 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 5185 | Condition final_branch_condition = |
| 5186 | EmitTypeofIs(true_label, false_label, input, instr->type_literal()); |
| 5187 | if (final_branch_condition != no_condition) { |
| 5188 | EmitBranch(true_block, false_block, final_branch_condition); |
| 5189 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5190 | } |
| 5191 | |
| 5192 | |
| 5193 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 5194 | Label* false_label, |
| 5195 | Register input, |
| 5196 | Handle<String> type_name) { |
| 5197 | Condition final_branch_condition = no_condition; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5198 | if (type_name->Equals(heap()->number_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5199 | __ JumpIfSmi(input, true_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5200 | __ cmp(FieldOperand(input, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5201 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5202 | final_branch_condition = equal; |
| 5203 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5204 | } else if (type_name->Equals(heap()->string_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5205 | __ JumpIfSmi(input, false_label); |
| 5206 | __ CmpObjectType(input, FIRST_NONSTRING_TYPE, input); |
| 5207 | __ j(above_equal, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5208 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5209 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5210 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5211 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5212 | } else if (type_name->Equals(heap()->boolean_symbol())) { |
| 5213 | __ cmp(input, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5214 | __ j(equal, true_label); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5215 | __ cmp(input, factory()->false_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5216 | final_branch_condition = equal; |
| 5217 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 5218 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_symbol())) { |
| 5219 | __ cmp(input, factory()->null_value()); |
| 5220 | final_branch_condition = equal; |
| 5221 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5222 | } else if (type_name->Equals(heap()->undefined_symbol())) { |
| 5223 | __ cmp(input, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5224 | __ j(equal, true_label); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5225 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5226 | // Check for undetectable objects => true. |
| 5227 | __ mov(input, FieldOperand(input, HeapObject::kMapOffset)); |
| 5228 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5229 | 1 << Map::kIsUndetectable); |
| 5230 | final_branch_condition = not_zero; |
| 5231 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5232 | } else if (type_name->Equals(heap()->function_symbol())) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5233 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5234 | __ JumpIfSmi(input, false_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5235 | __ CmpObjectType(input, JS_FUNCTION_TYPE, input); |
| 5236 | __ j(equal, true_label); |
| 5237 | __ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE); |
| 5238 | final_branch_condition = equal; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5239 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 5240 | } else if (type_name->Equals(heap()->object_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5241 | __ JumpIfSmi(input, false_label); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 5242 | if (!FLAG_harmony_typeof) { |
| 5243 | __ cmp(input, factory()->null_value()); |
| 5244 | __ j(equal, true_label); |
| 5245 | } |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 5246 | __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5247 | __ j(below, false_label); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 5248 | __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
| 5249 | __ j(above, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5250 | // Check for undetectable objects => false. |
| 5251 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5252 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 5253 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5254 | |
| 5255 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5256 | __ jmp(false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5257 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5258 | return final_branch_condition; |
| 5259 | } |
| 5260 | |
| 5261 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5262 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
| 5263 | Register temp = ToRegister(instr->TempAt(0)); |
| 5264 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 5265 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 5266 | |
| 5267 | EmitIsConstructCall(temp); |
| 5268 | EmitBranch(true_block, false_block, equal); |
| 5269 | } |
| 5270 | |
| 5271 | |
| 5272 | void LCodeGen::EmitIsConstructCall(Register temp) { |
| 5273 | // Get the frame pointer for the calling frame. |
| 5274 | __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 5275 | |
| 5276 | // Skip the arguments adaptor frame if it exists. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5277 | Label check_frame_marker; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5278 | __ cmp(Operand(temp, StandardFrameConstants::kContextOffset), |
| 5279 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5280 | __ j(not_equal, &check_frame_marker, Label::kNear); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5281 | __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset)); |
| 5282 | |
| 5283 | // Check the marker in the calling frame. |
| 5284 | __ bind(&check_frame_marker); |
| 5285 | __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset), |
| 5286 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5287 | } |
| 5288 | |
| 5289 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5290 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
| 5291 | // Ensure that we have enough space after the previous lazy-bailout |
| 5292 | // instruction for patching the code here. |
| 5293 | int current_pc = masm()->pc_offset(); |
| 5294 | int patch_size = Deoptimizer::patch_size(); |
| 5295 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 5296 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5297 | __ Nop(padding_size); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5298 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5299 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5300 | } |
| 5301 | |
| 5302 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5303 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5304 | EnsureSpaceForLazyDeopt(); |
| 5305 | ASSERT(instr->HasEnvironment()); |
| 5306 | LEnvironment* env = instr->environment(); |
| 5307 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5308 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5309 | } |
| 5310 | |
| 5311 | |
| 5312 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
| 5313 | DeoptimizeIf(no_condition, instr->environment()); |
| 5314 | } |
| 5315 | |
| 5316 | |
| 5317 | void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) { |
| 5318 | LOperand* obj = instr->object(); |
| 5319 | LOperand* key = instr->key(); |
| 5320 | __ push(ToOperand(obj)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5321 | EmitPushTaggedOperand(key); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5322 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5323 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5324 | RecordPosition(pointers->position()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5325 | // Create safepoint generator that will also ensure enough space in the |
| 5326 | // reloc info for patching in deoptimization (since this is invoking a |
| 5327 | // builtin) |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5328 | SafepointGenerator safepoint_generator( |
| 5329 | this, pointers, Safepoint::kLazyDeopt); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5330 | __ push(Immediate(Smi::FromInt(strict_mode_flag()))); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5331 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5332 | } |
| 5333 | |
| 5334 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5335 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5336 | PushSafepointRegistersScope scope(this); |
| 5337 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 5338 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5339 | RecordSafepointWithLazyDeopt( |
| 5340 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 5341 | ASSERT(instr->HasEnvironment()); |
| 5342 | LEnvironment* env = instr->environment(); |
| 5343 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5344 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5345 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5346 | |
| 5347 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 5348 | class DeferredStackCheck: public LDeferredCode { |
| 5349 | public: |
| 5350 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5351 | : LDeferredCode(codegen), instr_(instr) { } |
| 5352 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5353 | virtual LInstruction* instr() { return instr_; } |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5354 | private: |
| 5355 | LStackCheck* instr_; |
| 5356 | }; |
| 5357 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5358 | ASSERT(instr->HasEnvironment()); |
| 5359 | LEnvironment* env = instr->environment(); |
| 5360 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5361 | // prepare for lazy deoptimization explicitly here. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5362 | if (instr->hydrogen()->is_function_entry()) { |
| 5363 | // Perform stack overflow check. |
| 5364 | Label done; |
| 5365 | ExternalReference stack_limit = |
| 5366 | ExternalReference::address_of_stack_limit(isolate()); |
| 5367 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5368 | __ j(above_equal, &done, Label::kNear); |
| 5369 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5370 | ASSERT(instr->context()->IsRegister()); |
| 5371 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5372 | StackCheckStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5373 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5374 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5375 | __ bind(&done); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5376 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5377 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5378 | } else { |
| 5379 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 5380 | // Perform stack overflow check if this goto needs it before jumping. |
| 5381 | DeferredStackCheck* deferred_stack_check = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 5382 | new(zone()) DeferredStackCheck(this, instr); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5383 | ExternalReference stack_limit = |
| 5384 | ExternalReference::address_of_stack_limit(isolate()); |
| 5385 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5386 | __ j(below, deferred_stack_check->entry()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5387 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5388 | __ bind(instr->done_label()); |
| 5389 | deferred_stack_check->SetExit(instr->done_label()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5390 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5391 | // Don't record a deoptimization index for the safepoint here. |
| 5392 | // This will be done explicitly when emitting call and the safepoint in |
| 5393 | // the deferred code. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5394 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5395 | } |
| 5396 | |
| 5397 | |
| 5398 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5399 | // This is a pseudo-instruction that ensures that the environment here is |
| 5400 | // properly registered for deoptimization and records the assembler's PC |
| 5401 | // offset. |
| 5402 | LEnvironment* environment = instr->environment(); |
| 5403 | environment->SetSpilledRegisters(instr->SpilledRegisterArray(), |
| 5404 | instr->SpilledDoubleRegisterArray()); |
| 5405 | |
| 5406 | // If the environment were already registered, we would have no way of |
| 5407 | // backpatching it with the spill slot operands. |
| 5408 | ASSERT(!environment->HasBeenRegistered()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5409 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5410 | ASSERT(osr_pc_offset_ == -1); |
| 5411 | osr_pc_offset_ = masm()->pc_offset(); |
| 5412 | } |
| 5413 | |
| 5414 | |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5415 | void LCodeGen::DoIn(LIn* instr) { |
| 5416 | LOperand* obj = instr->object(); |
| 5417 | LOperand* key = instr->key(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5418 | EmitPushTaggedOperand(key); |
| 5419 | EmitPushTaggedOperand(obj); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5420 | ASSERT(instr->HasPointerMap()); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5421 | LPointerMap* pointers = instr->pointer_map(); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5422 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5423 | SafepointGenerator safepoint_generator( |
| 5424 | this, pointers, Safepoint::kLazyDeopt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5425 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5426 | } |
| 5427 | |
| 5428 | |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5429 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 5430 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 5431 | DeoptimizeIf(equal, instr->environment()); |
| 5432 | |
| 5433 | __ cmp(eax, isolate()->factory()->null_value()); |
| 5434 | DeoptimizeIf(equal, instr->environment()); |
| 5435 | |
| 5436 | __ test(eax, Immediate(kSmiTagMask)); |
| 5437 | DeoptimizeIf(zero, instr->environment()); |
| 5438 | |
| 5439 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5440 | __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
| 5441 | DeoptimizeIf(below_equal, instr->environment()); |
| 5442 | |
| 5443 | Label use_cache, call_runtime; |
| 5444 | __ CheckEnumCache(&call_runtime); |
| 5445 | |
| 5446 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 5447 | __ jmp(&use_cache, Label::kNear); |
| 5448 | |
| 5449 | // Get the set of properties to enumerate. |
| 5450 | __ bind(&call_runtime); |
| 5451 | __ push(eax); |
| 5452 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5453 | |
| 5454 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 5455 | isolate()->factory()->meta_map()); |
| 5456 | DeoptimizeIf(not_equal, instr->environment()); |
| 5457 | __ bind(&use_cache); |
| 5458 | } |
| 5459 | |
| 5460 | |
| 5461 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5462 | Register map = ToRegister(instr->map()); |
| 5463 | Register result = ToRegister(instr->result()); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 5464 | Label load_cache, done; |
| 5465 | __ EnumLength(result, map); |
| 5466 | __ cmp(result, Immediate(Smi::FromInt(0))); |
| 5467 | __ j(not_equal, &load_cache); |
| 5468 | __ mov(result, isolate()->factory()->empty_fixed_array()); |
| 5469 | __ jmp(&done); |
| 5470 | |
| 5471 | __ bind(&load_cache); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5472 | __ LoadInstanceDescriptors(map, result); |
| 5473 | __ mov(result, |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 5474 | FieldOperand(result, DescriptorArray::kEnumCacheOffset)); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5475 | __ mov(result, |
| 5476 | FieldOperand(result, FixedArray::SizeFor(instr->idx()))); |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 5477 | __ bind(&done); |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5478 | __ test(result, result); |
| 5479 | DeoptimizeIf(equal, instr->environment()); |
| 5480 | } |
| 5481 | |
| 5482 | |
| 5483 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5484 | Register object = ToRegister(instr->value()); |
| 5485 | __ cmp(ToRegister(instr->map()), |
| 5486 | FieldOperand(object, HeapObject::kMapOffset)); |
| 5487 | DeoptimizeIf(not_equal, instr->environment()); |
| 5488 | } |
| 5489 | |
| 5490 | |
| 5491 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 5492 | Register object = ToRegister(instr->object()); |
| 5493 | Register index = ToRegister(instr->index()); |
| 5494 | |
| 5495 | Label out_of_object, done; |
| 5496 | __ cmp(index, Immediate(0)); |
| 5497 | __ j(less, &out_of_object); |
| 5498 | __ mov(object, FieldOperand(object, |
| 5499 | index, |
| 5500 | times_half_pointer_size, |
| 5501 | JSObject::kHeaderSize)); |
| 5502 | __ jmp(&done, Label::kNear); |
| 5503 | |
| 5504 | __ bind(&out_of_object); |
| 5505 | __ mov(object, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 5506 | __ neg(index); |
| 5507 | // Index is now equal to out of object property index plus 1. |
| 5508 | __ mov(object, FieldOperand(object, |
| 5509 | index, |
| 5510 | times_half_pointer_size, |
| 5511 | FixedArray::kHeaderSize - kPointerSize)); |
| 5512 | __ bind(&done); |
| 5513 | } |
| 5514 | |
| 5515 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5516 | #undef __ |
| 5517 | |
| 5518 | } } // namespace v8::internal |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 5519 | |
| 5520 | #endif // V8_TARGET_ARCH_IA32 |