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()) || |
| 84 | info()->osr_ast_id() != AstNode::kNoNumber; |
| 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 | |
| 102 | void LCodeGen::Abort(const char* format, ...) { |
| 103 | if (FLAG_trace_bailout) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 104 | SmartArrayPointer<char> name( |
| 105 | info()->shared_info()->DebugName()->ToCString()); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 106 | PrintF("Aborting LCodeGen in @\"%s\": ", *name); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 107 | va_list arguments; |
| 108 | va_start(arguments, format); |
| 109 | OS::VPrint(format, arguments); |
| 110 | va_end(arguments); |
| 111 | PrintF("\n"); |
| 112 | } |
| 113 | status_ = ABORTED; |
| 114 | } |
| 115 | |
| 116 | |
| 117 | void LCodeGen::Comment(const char* format, ...) { |
| 118 | if (!FLAG_code_comments) return; |
| 119 | char buffer[4 * KB]; |
| 120 | StringBuilder builder(buffer, ARRAY_SIZE(buffer)); |
| 121 | va_list arguments; |
| 122 | va_start(arguments, format); |
| 123 | builder.AddFormattedList(format, arguments); |
| 124 | va_end(arguments); |
| 125 | |
| 126 | // Copy the string before recording it in the assembler to avoid |
| 127 | // issues when the stack allocated buffer goes out of scope. |
| 128 | size_t length = builder.position(); |
| 129 | Vector<char> copy = Vector<char>::New(length + 1); |
| 130 | memcpy(copy.start(), builder.Finalize(), copy.length()); |
| 131 | masm()->RecordComment(copy.start()); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | bool LCodeGen::GeneratePrologue() { |
| 136 | ASSERT(is_generating()); |
| 137 | |
| 138 | #ifdef DEBUG |
| 139 | if (strlen(FLAG_stop_at) > 0 && |
| 140 | info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { |
| 141 | __ int3(); |
| 142 | } |
| 143 | #endif |
| 144 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 145 | // Strict mode functions and builtins need to replace the receiver |
| 146 | // with undefined when called as functions (without an explicit |
| 147 | // receiver object). ecx is zero for method calls and non-zero for |
| 148 | // function calls. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 149 | if (!info_->is_classic_mode() || info_->is_native()) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 150 | Label ok; |
| 151 | __ test(ecx, Operand(ecx)); |
| 152 | __ j(zero, &ok, Label::kNear); |
| 153 | // +1 for return address. |
| 154 | int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 155 | __ mov(Operand(esp, receiver_offset), |
| 156 | Immediate(isolate()->factory()->undefined_value())); |
| 157 | __ bind(&ok); |
| 158 | } |
| 159 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 160 | |
| 161 | if (dynamic_frame_alignment_) { |
| 162 | // Move state of dynamic frame alignment into edx. |
| 163 | __ mov(edx, Immediate(kNoAlignmentPadding)); |
| 164 | |
| 165 | Label do_not_pad, align_loop; |
| 166 | STATIC_ASSERT(kDoubleSize == 2 * kPointerSize); |
| 167 | // Align esp + 4 to a multiple of 2 * kPointerSize. |
| 168 | __ test(esp, Immediate(kPointerSize)); |
| 169 | __ j(not_zero, &do_not_pad, Label::kNear); |
| 170 | __ push(Immediate(0)); |
| 171 | __ mov(ebx, esp); |
| 172 | __ mov(edx, Immediate(kAlignmentPaddingPushed)); |
| 173 | // Copy arguments, receiver, and return address. |
| 174 | __ mov(ecx, Immediate(scope()->num_parameters() + 2)); |
| 175 | |
| 176 | __ bind(&align_loop); |
| 177 | __ mov(eax, Operand(ebx, 1 * kPointerSize)); |
| 178 | __ mov(Operand(ebx, 0), eax); |
| 179 | __ add(Operand(ebx), Immediate(kPointerSize)); |
| 180 | __ dec(ecx); |
| 181 | __ j(not_zero, &align_loop, Label::kNear); |
| 182 | __ mov(Operand(ebx, 0), Immediate(kAlignmentZapValue)); |
| 183 | __ bind(&do_not_pad); |
| 184 | } |
| 185 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 186 | __ push(ebp); // Caller's frame pointer. |
| 187 | __ mov(ebp, esp); |
| 188 | __ push(esi); // Callee's context. |
| 189 | __ push(edi); // Callee's JS function. |
| 190 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 191 | if (dynamic_frame_alignment_ && FLAG_debug_code) { |
| 192 | __ test(esp, Immediate(kPointerSize)); |
| 193 | __ Assert(zero, "frame is expected to be aligned"); |
| 194 | } |
| 195 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 196 | // Reserve space for the stack slots needed by the code. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 197 | int slots = GetStackSlotCount(); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 198 | ASSERT_GE(slots, 1); |
| 199 | if (slots == 1) { |
| 200 | if (dynamic_frame_alignment_) { |
| 201 | __ push(edx); |
| 202 | } else { |
| 203 | __ push(Immediate(kNoAlignmentPadding)); |
| 204 | } |
| 205 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 206 | if (FLAG_debug_code) { |
| 207 | __ mov(Operand(eax), Immediate(slots)); |
| 208 | Label loop; |
| 209 | __ bind(&loop); |
| 210 | __ push(Immediate(kSlotsZapValue)); |
| 211 | __ dec(eax); |
| 212 | __ j(not_zero, &loop); |
| 213 | } else { |
| 214 | __ sub(Operand(esp), Immediate(slots * kPointerSize)); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 215 | #ifdef _MSC_VER |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 216 | // On windows, you may not access the stack more than one page below |
| 217 | // the most recently mapped page. To make the allocated area randomly |
| 218 | // accessible, we write to each page in turn (the value is irrelevant). |
| 219 | const int kPageSize = 4 * KB; |
| 220 | for (int offset = slots * kPointerSize - kPageSize; |
| 221 | offset > 0; |
| 222 | offset -= kPageSize) { |
| 223 | __ mov(Operand(esp, offset), eax); |
| 224 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 225 | #endif |
| 226 | } |
| 227 | |
| 228 | // Store dynamic frame alignment state in the first local. |
| 229 | if (dynamic_frame_alignment_) { |
| 230 | __ mov(Operand(ebp, |
| 231 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset), |
| 232 | edx); |
| 233 | } else { |
| 234 | __ mov(Operand(ebp, |
| 235 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset), |
| 236 | Immediate(kNoAlignmentPadding)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 237 | } |
| 238 | } |
| 239 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 240 | // Possibly allocate a local context. |
| 241 | int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 242 | if (heap_slots > 0) { |
| 243 | Comment(";;; Allocate local context"); |
| 244 | // Argument to NewContext is the function, which is still in edi. |
| 245 | __ push(edi); |
| 246 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 247 | FastNewContextStub stub(heap_slots); |
| 248 | __ CallStub(&stub); |
| 249 | } else { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 250 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 251 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 252 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 253 | // Context is returned in both eax and esi. It replaces the context |
| 254 | // passed to us. It's saved in the stack and kept live in esi. |
| 255 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi); |
| 256 | |
| 257 | // Copy parameters into context if necessary. |
| 258 | int num_parameters = scope()->num_parameters(); |
| 259 | for (int i = 0; i < num_parameters; i++) { |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 260 | Variable* var = scope()->parameter(i); |
| 261 | if (var->IsContextSlot()) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 262 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 263 | (num_parameters - 1 - i) * kPointerSize; |
| 264 | // Load parameter from stack. |
| 265 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 266 | // Store it in the context. |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 267 | int context_offset = Context::SlotOffset(var->index()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 268 | __ mov(Operand(esi, context_offset), eax); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 269 | // Update the write barrier. This clobbers eax and ebx. |
| 270 | __ RecordWriteContextSlot(esi, |
| 271 | context_offset, |
| 272 | eax, |
| 273 | ebx, |
| 274 | kDontSaveFPRegs); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 275 | } |
| 276 | } |
| 277 | Comment(";;; End allocate local context"); |
| 278 | } |
| 279 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 280 | // Trace the call. |
| 281 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 282 | // We have not executed any compiled code yet, so esi still holds the |
| 283 | // incoming context. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 284 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 285 | } |
| 286 | return !is_aborted(); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | bool LCodeGen::GenerateBody() { |
| 291 | ASSERT(is_generating()); |
| 292 | bool emit_instructions = true; |
| 293 | for (current_instruction_ = 0; |
| 294 | !is_aborted() && current_instruction_ < instructions_->length(); |
| 295 | current_instruction_++) { |
| 296 | LInstruction* instr = instructions_->at(current_instruction_); |
| 297 | if (instr->IsLabel()) { |
| 298 | LLabel* label = LLabel::cast(instr); |
| 299 | emit_instructions = !label->HasReplacement(); |
| 300 | } |
| 301 | |
| 302 | if (emit_instructions) { |
| 303 | Comment(";;; @%d: %s.", current_instruction_, instr->Mnemonic()); |
| 304 | instr->CompileToNative(this); |
| 305 | } |
| 306 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 307 | EnsureSpaceForLazyDeopt(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 308 | return !is_aborted(); |
| 309 | } |
| 310 | |
| 311 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 312 | bool LCodeGen::GenerateDeferredCode() { |
| 313 | ASSERT(is_generating()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 314 | if (deferred_.length() > 0) { |
| 315 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 316 | LDeferredCode* code = deferred_[i]; |
| 317 | __ bind(code->entry()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 318 | Comment(";;; Deferred code @%d: %s.", |
| 319 | code->instruction_index(), |
| 320 | code->instr()->Mnemonic()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 321 | code->Generate(); |
| 322 | __ jmp(code->exit()); |
| 323 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | // Deferred code is the last part of the instruction sequence. Mark |
| 327 | // the generated code as done unless we bailed out. |
| 328 | if (!is_aborted()) status_ = DONE; |
| 329 | return !is_aborted(); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | bool LCodeGen::GenerateSafepointTable() { |
| 334 | ASSERT(is_done()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 335 | safepoints_.Emit(masm(), GetStackSlotCount()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 336 | return !is_aborted(); |
| 337 | } |
| 338 | |
| 339 | |
| 340 | Register LCodeGen::ToRegister(int index) const { |
| 341 | return Register::FromAllocationIndex(index); |
| 342 | } |
| 343 | |
| 344 | |
| 345 | XMMRegister LCodeGen::ToDoubleRegister(int index) const { |
| 346 | return XMMRegister::FromAllocationIndex(index); |
| 347 | } |
| 348 | |
| 349 | |
| 350 | Register LCodeGen::ToRegister(LOperand* op) const { |
| 351 | ASSERT(op->IsRegister()); |
| 352 | return ToRegister(op->index()); |
| 353 | } |
| 354 | |
| 355 | |
| 356 | XMMRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
| 357 | ASSERT(op->IsDoubleRegister()); |
| 358 | return ToDoubleRegister(op->index()); |
| 359 | } |
| 360 | |
| 361 | |
| 362 | int LCodeGen::ToInteger32(LConstantOperand* op) const { |
| 363 | Handle<Object> value = chunk_->LookupLiteral(op); |
| 364 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsInteger32()); |
| 365 | ASSERT(static_cast<double>(static_cast<int32_t>(value->Number())) == |
| 366 | value->Number()); |
| 367 | return static_cast<int32_t>(value->Number()); |
| 368 | } |
| 369 | |
| 370 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 371 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
| 372 | Handle<Object> literal = chunk_->LookupLiteral(op); |
| 373 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsTagged()); |
| 374 | return literal; |
| 375 | } |
| 376 | |
| 377 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 378 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
| 379 | Handle<Object> value = chunk_->LookupLiteral(op); |
| 380 | return value->Number(); |
| 381 | } |
| 382 | |
| 383 | |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 384 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
| 385 | return chunk_->LookupLiteralRepresentation(op).IsInteger32(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | |
| 389 | Operand LCodeGen::ToOperand(LOperand* op) const { |
| 390 | if (op->IsRegister()) return Operand(ToRegister(op)); |
| 391 | if (op->IsDoubleRegister()) return Operand(ToDoubleRegister(op)); |
| 392 | ASSERT(op->IsStackSlot() || op->IsDoubleStackSlot()); |
| 393 | int index = op->index(); |
| 394 | if (index >= 0) { |
| 395 | // Local or spill slot. Skip the frame pointer, function, and |
| 396 | // context in the fixed part of the frame. |
| 397 | return Operand(ebp, -(index + 3) * kPointerSize); |
| 398 | } else { |
| 399 | // Incoming parameter. Skip the return address. |
| 400 | return Operand(ebp, -(index - 1) * kPointerSize); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 405 | Operand LCodeGen::HighOperand(LOperand* op) { |
| 406 | ASSERT(op->IsDoubleStackSlot()); |
| 407 | int index = op->index(); |
| 408 | int offset = (index >= 0) ? index + 3 : index - 1; |
| 409 | return Operand(ebp, -offset * kPointerSize); |
| 410 | } |
| 411 | |
| 412 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 413 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
| 414 | Translation* translation) { |
| 415 | if (environment == NULL) return; |
| 416 | |
| 417 | // The translation includes one command per value in the environment. |
| 418 | int translation_size = environment->values()->length(); |
| 419 | // The output frame height does not include the parameters. |
| 420 | int height = translation_size - environment->parameter_count(); |
| 421 | |
| 422 | WriteTranslation(environment->outer(), translation); |
| 423 | int closure_id = DefineDeoptimizationLiteral(environment->closure()); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 424 | switch (environment->frame_type()) { |
| 425 | case JS_FUNCTION: |
| 426 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 427 | break; |
| 428 | case JS_CONSTRUCT: |
| 429 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 430 | break; |
| 431 | case ARGUMENTS_ADAPTOR: |
| 432 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 433 | break; |
| 434 | default: |
| 435 | UNREACHABLE(); |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 436 | } |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 437 | for (int i = 0; i < translation_size; ++i) { |
| 438 | LOperand* value = environment->values()->at(i); |
| 439 | // spilled_registers_ and spilled_double_registers_ are either |
| 440 | // both NULL or both set. |
| 441 | if (environment->spilled_registers() != NULL && value != NULL) { |
| 442 | if (value->IsRegister() && |
| 443 | environment->spilled_registers()[value->index()] != NULL) { |
| 444 | translation->MarkDuplicate(); |
| 445 | AddToTranslation(translation, |
| 446 | environment->spilled_registers()[value->index()], |
| 447 | environment->HasTaggedValueAt(i)); |
| 448 | } else if ( |
| 449 | value->IsDoubleRegister() && |
| 450 | environment->spilled_double_registers()[value->index()] != NULL) { |
| 451 | translation->MarkDuplicate(); |
| 452 | AddToTranslation( |
| 453 | translation, |
| 454 | environment->spilled_double_registers()[value->index()], |
| 455 | false); |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | AddToTranslation(translation, value, environment->HasTaggedValueAt(i)); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 464 | void LCodeGen::AddToTranslation(Translation* translation, |
| 465 | LOperand* op, |
| 466 | bool is_tagged) { |
| 467 | if (op == NULL) { |
| 468 | // TODO(twuerthinger): Introduce marker operands to indicate that this value |
| 469 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 470 | // this is only used for the arguments object. |
| 471 | translation->StoreArgumentsObject(); |
| 472 | } else if (op->IsStackSlot()) { |
| 473 | if (is_tagged) { |
| 474 | translation->StoreStackSlot(op->index()); |
| 475 | } else { |
| 476 | translation->StoreInt32StackSlot(op->index()); |
| 477 | } |
| 478 | } else if (op->IsDoubleStackSlot()) { |
| 479 | translation->StoreDoubleStackSlot(op->index()); |
| 480 | } else if (op->IsArgument()) { |
| 481 | ASSERT(is_tagged); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 482 | int src_index = GetStackSlotCount() + op->index(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 483 | translation->StoreStackSlot(src_index); |
| 484 | } else if (op->IsRegister()) { |
| 485 | Register reg = ToRegister(op); |
| 486 | if (is_tagged) { |
| 487 | translation->StoreRegister(reg); |
| 488 | } else { |
| 489 | translation->StoreInt32Register(reg); |
| 490 | } |
| 491 | } else if (op->IsDoubleRegister()) { |
| 492 | XMMRegister reg = ToDoubleRegister(op); |
| 493 | translation->StoreDoubleRegister(reg); |
| 494 | } else if (op->IsConstantOperand()) { |
| 495 | Handle<Object> literal = chunk()->LookupLiteral(LConstantOperand::cast(op)); |
| 496 | int src_index = DefineDeoptimizationLiteral(literal); |
| 497 | translation->StoreLiteral(src_index); |
| 498 | } else { |
| 499 | UNREACHABLE(); |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 504 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 505 | RelocInfo::Mode mode, |
| 506 | LInstruction* instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 507 | SafepointMode safepoint_mode) { |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 508 | ASSERT(instr != NULL); |
| 509 | LPointerMap* pointers = instr->pointer_map(); |
| 510 | RecordPosition(pointers->position()); |
| 511 | __ call(code, mode); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 512 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 513 | |
| 514 | // Signal that we don't inline smi code before these stubs in the |
| 515 | // optimizing code generator. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 516 | if (code->kind() == Code::BINARY_OP_IC || |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 517 | code->kind() == Code::COMPARE_IC) { |
| 518 | __ nop(); |
| 519 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 523 | void LCodeGen::CallCode(Handle<Code> code, |
| 524 | RelocInfo::Mode mode, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 525 | LInstruction* instr) { |
| 526 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 530 | void LCodeGen::CallRuntime(const Runtime::Function* fun, |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 531 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 532 | LInstruction* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 533 | ASSERT(instr != NULL); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 534 | ASSERT(instr->HasPointerMap()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 535 | LPointerMap* pointers = instr->pointer_map(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 536 | RecordPosition(pointers->position()); |
| 537 | |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 538 | __ CallRuntime(fun, argc); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 539 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 540 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 544 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 545 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 546 | LInstruction* instr, |
| 547 | LOperand* context) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 548 | if (context->IsRegister()) { |
| 549 | if (!ToRegister(context).is(esi)) { |
| 550 | __ mov(esi, ToRegister(context)); |
| 551 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 552 | } else if (context->IsStackSlot()) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 553 | __ mov(esi, ToOperand(context)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 554 | } else if (context->IsConstantOperand()) { |
| 555 | Handle<Object> literal = |
| 556 | chunk_->LookupLiteral(LConstantOperand::cast(context)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 557 | __ LoadHeapObject(esi, Handle<Context>::cast(literal)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 558 | } else { |
| 559 | UNREACHABLE(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 560 | } |
| 561 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 562 | __ CallRuntimeSaveDoubles(id); |
| 563 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 564 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 565 | } |
| 566 | |
| 567 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 568 | void LCodeGen::RegisterEnvironmentForDeoptimization( |
| 569 | LEnvironment* environment, Safepoint::DeoptMode mode) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 570 | if (!environment->HasBeenRegistered()) { |
| 571 | // Physical stack frame layout: |
| 572 | // -x ............. -4 0 ..................................... y |
| 573 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 574 | |
| 575 | // Layout of the environment: |
| 576 | // 0 ..................................................... size-1 |
| 577 | // [parameters] [locals] [expression stack including arguments] |
| 578 | |
| 579 | // Layout of the translation: |
| 580 | // 0 ........................................................ size - 1 + 4 |
| 581 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 582 | // |>------------ translation_size ------------<| |
| 583 | |
| 584 | int frame_count = 0; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 585 | int jsframe_count = 0; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 586 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 587 | ++frame_count; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 588 | if (e->frame_type() == JS_FUNCTION) { |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 589 | ++jsframe_count; |
| 590 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 591 | } |
rossberg@chromium.org | 400388e | 2012-06-06 09:29:22 +0000 | [diff] [blame] | 592 | Translation translation(&translations_, frame_count, jsframe_count, |
| 593 | zone()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 594 | WriteTranslation(environment, &translation); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 595 | int deoptimization_index = deoptimizations_.length(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 596 | int pc_offset = masm()->pc_offset(); |
| 597 | environment->Register(deoptimization_index, |
| 598 | translation.index(), |
| 599 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 600 | deoptimizations_.Add(environment, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 601 | } |
| 602 | } |
| 603 | |
| 604 | |
| 605 | void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 606 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 607 | ASSERT(environment->HasBeenRegistered()); |
| 608 | int id = environment->deoptimization_index(); |
| 609 | Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 610 | if (entry == NULL) { |
| 611 | Abort("bailout was not prepared"); |
| 612 | return; |
| 613 | } |
| 614 | |
| 615 | if (FLAG_deopt_every_n_times != 0) { |
| 616 | Handle<SharedFunctionInfo> shared(info_->shared_info()); |
| 617 | Label no_deopt; |
| 618 | __ pushfd(); |
| 619 | __ push(eax); |
| 620 | __ push(ebx); |
| 621 | __ mov(ebx, shared); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 622 | __ mov(eax, |
| 623 | FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 624 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 625 | __ j(not_zero, &no_deopt, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 626 | if (FLAG_trap_on_deopt) __ int3(); |
| 627 | __ mov(eax, Immediate(Smi::FromInt(FLAG_deopt_every_n_times))); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 628 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset), |
| 629 | eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 630 | __ pop(ebx); |
| 631 | __ pop(eax); |
| 632 | __ popfd(); |
| 633 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 634 | |
| 635 | __ bind(&no_deopt); |
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 | } |
| 642 | |
| 643 | if (cc == no_condition) { |
| 644 | if (FLAG_trap_on_deopt) __ int3(); |
| 645 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 646 | } else { |
| 647 | if (FLAG_trap_on_deopt) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 648 | Label done; |
| 649 | __ j(NegateCondition(cc), &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 650 | __ int3(); |
| 651 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 652 | __ bind(&done); |
| 653 | } else { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 654 | __ j(cc, entry, RelocInfo::RUNTIME_ENTRY); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 655 | } |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | |
| 660 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 661 | int length = deoptimizations_.length(); |
| 662 | if (length == 0) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 663 | Handle<DeoptimizationInputData> data = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 664 | factory()->NewDeoptimizationInputData(length, TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 665 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 666 | Handle<ByteArray> translations = translations_.CreateByteArray(); |
| 667 | data->SetTranslationByteArray(*translations); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 668 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 669 | |
| 670 | Handle<FixedArray> literals = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 671 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 672 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 673 | literals->set(i, *deoptimization_literals_[i]); |
| 674 | } |
| 675 | data->SetLiteralArray(*literals); |
| 676 | |
| 677 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id())); |
| 678 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 679 | |
| 680 | // Populate the deoptimization entries. |
| 681 | for (int i = 0; i < length; i++) { |
| 682 | LEnvironment* env = deoptimizations_[i]; |
| 683 | data->SetAstId(i, Smi::FromInt(env->ast_id())); |
| 684 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 685 | data->SetArgumentsStackHeight(i, |
| 686 | Smi::FromInt(env->arguments_stack_height())); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 687 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 688 | } |
| 689 | code->set_deoptimization_data(*data); |
| 690 | } |
| 691 | |
| 692 | |
| 693 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 694 | int result = deoptimization_literals_.length(); |
| 695 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 696 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 697 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 698 | deoptimization_literals_.Add(literal, zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 699 | return result; |
| 700 | } |
| 701 | |
| 702 | |
| 703 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 704 | ASSERT(deoptimization_literals_.length() == 0); |
| 705 | |
| 706 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 707 | chunk()->inlined_closures(); |
| 708 | |
| 709 | for (int i = 0, length = inlined_closures->length(); |
| 710 | i < length; |
| 711 | i++) { |
| 712 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 713 | } |
| 714 | |
| 715 | inlined_function_count_ = deoptimization_literals_.length(); |
| 716 | } |
| 717 | |
| 718 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 719 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 720 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 721 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 722 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 723 | } else { |
| 724 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 725 | RecordSafepointWithRegisters( |
| 726 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 731 | void LCodeGen::RecordSafepoint( |
| 732 | LPointerMap* pointers, |
| 733 | Safepoint::Kind kind, |
| 734 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 735 | Safepoint::DeoptMode deopt_mode) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 736 | ASSERT(kind == expected_safepoint_kind_); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 737 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 738 | Safepoint safepoint = |
| 739 | safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 740 | for (int i = 0; i < operands->length(); i++) { |
| 741 | LOperand* pointer = operands->at(i); |
| 742 | if (pointer->IsStackSlot()) { |
rossberg@chromium.org | 400388e | 2012-06-06 09:29:22 +0000 | [diff] [blame] | 743 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 744 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 745 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 746 | } |
| 747 | } |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 748 | } |
| 749 | |
| 750 | |
| 751 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 752 | Safepoint::DeoptMode mode) { |
| 753 | RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 757 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 758 | LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 759 | RecordSafepoint(&empty_pointers, mode); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 763 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 764 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 765 | Safepoint::DeoptMode mode) { |
| 766 | RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | |
| 770 | void LCodeGen::RecordPosition(int position) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 771 | if (position == RelocInfo::kNoPosition) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 772 | masm()->positions_recorder()->RecordPosition(position); |
| 773 | } |
| 774 | |
| 775 | |
| 776 | void LCodeGen::DoLabel(LLabel* label) { |
| 777 | if (label->is_loop_header()) { |
| 778 | Comment(";;; B%d - LOOP entry", label->block_id()); |
| 779 | } else { |
| 780 | Comment(";;; B%d", label->block_id()); |
| 781 | } |
| 782 | __ bind(label->label()); |
| 783 | current_block_ = label->block_id(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 784 | DoGap(label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | |
| 788 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 789 | resolver_.Resolve(move); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | |
| 793 | void LCodeGen::DoGap(LGap* gap) { |
| 794 | for (int i = LGap::FIRST_INNER_POSITION; |
| 795 | i <= LGap::LAST_INNER_POSITION; |
| 796 | i++) { |
| 797 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 798 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 799 | if (move != NULL) DoParallelMove(move); |
| 800 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 801 | } |
| 802 | |
| 803 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 804 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 805 | DoGap(instr); |
| 806 | } |
| 807 | |
| 808 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 809 | void LCodeGen::DoParameter(LParameter* instr) { |
| 810 | // Nothing to do. |
| 811 | } |
| 812 | |
| 813 | |
| 814 | void LCodeGen::DoCallStub(LCallStub* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 815 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 816 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 817 | switch (instr->hydrogen()->major_key()) { |
| 818 | case CodeStub::RegExpConstructResult: { |
| 819 | RegExpConstructResultStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 820 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 821 | break; |
| 822 | } |
| 823 | case CodeStub::RegExpExec: { |
| 824 | RegExpExecStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 825 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 826 | break; |
| 827 | } |
| 828 | case CodeStub::SubString: { |
| 829 | SubStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 830 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 831 | break; |
| 832 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 833 | case CodeStub::NumberToString: { |
| 834 | NumberToStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 835 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 836 | break; |
| 837 | } |
| 838 | case CodeStub::StringAdd: { |
| 839 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 840 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 841 | break; |
| 842 | } |
| 843 | case CodeStub::StringCompare: { |
| 844 | StringCompareStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 845 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 846 | break; |
| 847 | } |
| 848 | case CodeStub::TranscendentalCache: { |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 849 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 850 | TranscendentalCacheStub::TAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 851 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 852 | break; |
| 853 | } |
| 854 | default: |
| 855 | UNREACHABLE(); |
| 856 | } |
| 857 | } |
| 858 | |
| 859 | |
| 860 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
| 861 | // Nothing to do. |
| 862 | } |
| 863 | |
| 864 | |
| 865 | void LCodeGen::DoModI(LModI* instr) { |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 866 | if (instr->hydrogen()->HasPowerOf2Divisor()) { |
| 867 | Register dividend = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 868 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 869 | int32_t divisor = |
| 870 | HConstant::cast(instr->hydrogen()->right())->Integer32Value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 871 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 872 | if (divisor < 0) divisor = -divisor; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 873 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 874 | Label positive_dividend, done; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 875 | __ test(dividend, Operand(dividend)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 876 | __ j(not_sign, &positive_dividend, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 877 | __ neg(dividend); |
| 878 | __ and_(dividend, divisor - 1); |
| 879 | __ neg(dividend); |
| 880 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 881 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 882 | DeoptimizeIf(no_condition, instr->environment()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 883 | } else { |
| 884 | __ jmp(&done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 885 | } |
| 886 | __ bind(&positive_dividend); |
| 887 | __ and_(dividend, divisor - 1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 888 | __ bind(&done); |
| 889 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 890 | Label done, remainder_eq_dividend, slow, do_subtraction, both_positive; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 891 | Register left_reg = ToRegister(instr->InputAt(0)); |
| 892 | Register right_reg = ToRegister(instr->InputAt(1)); |
| 893 | Register result_reg = ToRegister(instr->result()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 894 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 895 | ASSERT(left_reg.is(eax)); |
| 896 | ASSERT(result_reg.is(edx)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 897 | ASSERT(!right_reg.is(eax)); |
| 898 | ASSERT(!right_reg.is(edx)); |
| 899 | |
| 900 | // Check for x % 0. |
| 901 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 902 | __ test(right_reg, Operand(right_reg)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 903 | DeoptimizeIf(zero, instr->environment()); |
| 904 | } |
| 905 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 906 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 907 | __ j(zero, &remainder_eq_dividend, Label::kNear); |
| 908 | __ j(sign, &slow, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 909 | |
| 910 | __ test(right_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 911 | __ j(not_sign, &both_positive, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 912 | // The sign of the divisor doesn't matter. |
| 913 | __ neg(right_reg); |
| 914 | |
| 915 | __ bind(&both_positive); |
| 916 | // If the dividend is smaller than the nonnegative |
| 917 | // divisor, the dividend is the result. |
| 918 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 919 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 920 | |
| 921 | // Check if the divisor is a PowerOfTwo integer. |
| 922 | Register scratch = ToRegister(instr->TempAt(0)); |
| 923 | __ mov(scratch, right_reg); |
| 924 | __ sub(Operand(scratch), Immediate(1)); |
| 925 | __ test(scratch, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 926 | __ j(not_zero, &do_subtraction, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 927 | __ and_(left_reg, Operand(scratch)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 928 | __ jmp(&remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 929 | |
| 930 | __ bind(&do_subtraction); |
| 931 | const int kUnfolds = 3; |
| 932 | // Try a few subtractions of the dividend. |
| 933 | __ mov(scratch, left_reg); |
| 934 | for (int i = 0; i < kUnfolds; i++) { |
| 935 | // Reduce the dividend by the divisor. |
| 936 | __ sub(left_reg, Operand(right_reg)); |
| 937 | // Check if the dividend is less than the divisor. |
| 938 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 939 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 940 | } |
| 941 | __ mov(left_reg, scratch); |
| 942 | |
| 943 | // Slow case, using idiv instruction. |
| 944 | __ bind(&slow); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 945 | // Sign extend to edx. |
| 946 | __ cdq(); |
| 947 | |
| 948 | // Check for (0 % -x) that will produce negative zero. |
| 949 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 950 | Label positive_left; |
| 951 | Label done; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 952 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 953 | __ j(not_sign, &positive_left, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 954 | __ idiv(right_reg); |
| 955 | |
| 956 | // 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] | 957 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 958 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 959 | |
| 960 | DeoptimizeIf(no_condition, instr->environment()); |
| 961 | __ bind(&positive_left); |
| 962 | __ idiv(right_reg); |
| 963 | __ bind(&done); |
| 964 | } else { |
| 965 | __ idiv(right_reg); |
| 966 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 967 | __ jmp(&done, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 968 | |
| 969 | __ bind(&remainder_eq_dividend); |
| 970 | __ mov(result_reg, left_reg); |
| 971 | |
| 972 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 973 | } |
| 974 | } |
| 975 | |
| 976 | |
| 977 | void LCodeGen::DoDivI(LDivI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 978 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 979 | ASSERT(ToRegister(instr->result()).is(eax)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 980 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 981 | ASSERT(!ToRegister(instr->InputAt(1)).is(eax)); |
| 982 | ASSERT(!ToRegister(instr->InputAt(1)).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 983 | |
| 984 | Register left_reg = eax; |
| 985 | |
| 986 | // Check for x / 0. |
| 987 | Register right_reg = ToRegister(right); |
| 988 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 989 | __ test(right_reg, ToOperand(right)); |
| 990 | DeoptimizeIf(zero, instr->environment()); |
| 991 | } |
| 992 | |
| 993 | // Check for (0 / -x) that will produce negative zero. |
| 994 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 995 | Label left_not_zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 996 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 997 | __ j(not_zero, &left_not_zero, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 998 | __ test(right_reg, ToOperand(right)); |
| 999 | DeoptimizeIf(sign, instr->environment()); |
| 1000 | __ bind(&left_not_zero); |
| 1001 | } |
| 1002 | |
| 1003 | // Check for (-kMinInt / -1). |
| 1004 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1005 | Label left_not_min_int; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1006 | __ cmp(left_reg, kMinInt); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1007 | __ j(not_zero, &left_not_min_int, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1008 | __ cmp(right_reg, -1); |
| 1009 | DeoptimizeIf(zero, instr->environment()); |
| 1010 | __ bind(&left_not_min_int); |
| 1011 | } |
| 1012 | |
| 1013 | // Sign extend to edx. |
| 1014 | __ cdq(); |
| 1015 | __ idiv(right_reg); |
| 1016 | |
| 1017 | // Deoptimize if remainder is not 0. |
| 1018 | __ test(edx, Operand(edx)); |
| 1019 | DeoptimizeIf(not_zero, instr->environment()); |
| 1020 | } |
| 1021 | |
| 1022 | |
| 1023 | void LCodeGen::DoMulI(LMulI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1024 | Register left = ToRegister(instr->InputAt(0)); |
| 1025 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1026 | |
| 1027 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1028 | __ mov(ToRegister(instr->TempAt(0)), left); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1029 | } |
| 1030 | |
| 1031 | if (right->IsConstantOperand()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1032 | // Try strength reductions on the multiplication. |
| 1033 | // All replacement instructions are at most as long as the imul |
| 1034 | // and have better latency. |
| 1035 | int constant = ToInteger32(LConstantOperand::cast(right)); |
| 1036 | if (constant == -1) { |
| 1037 | __ neg(left); |
| 1038 | } else if (constant == 0) { |
| 1039 | __ xor_(left, Operand(left)); |
| 1040 | } else if (constant == 2) { |
| 1041 | __ add(left, Operand(left)); |
| 1042 | } else if (!instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1043 | // If we know that the multiplication can't overflow, it's safe to |
| 1044 | // use instructions that don't set the overflow flag for the |
| 1045 | // multiplication. |
| 1046 | switch (constant) { |
| 1047 | case 1: |
| 1048 | // Do nothing. |
| 1049 | break; |
| 1050 | case 3: |
| 1051 | __ lea(left, Operand(left, left, times_2, 0)); |
| 1052 | break; |
| 1053 | case 4: |
| 1054 | __ shl(left, 2); |
| 1055 | break; |
| 1056 | case 5: |
| 1057 | __ lea(left, Operand(left, left, times_4, 0)); |
| 1058 | break; |
| 1059 | case 8: |
| 1060 | __ shl(left, 3); |
| 1061 | break; |
| 1062 | case 9: |
| 1063 | __ lea(left, Operand(left, left, times_8, 0)); |
| 1064 | break; |
| 1065 | case 16: |
| 1066 | __ shl(left, 4); |
| 1067 | break; |
| 1068 | default: |
| 1069 | __ imul(left, left, constant); |
| 1070 | break; |
| 1071 | } |
| 1072 | } else { |
| 1073 | __ imul(left, left, constant); |
| 1074 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1075 | } else { |
| 1076 | __ imul(left, ToOperand(right)); |
| 1077 | } |
| 1078 | |
| 1079 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1080 | DeoptimizeIf(overflow, instr->environment()); |
| 1081 | } |
| 1082 | |
| 1083 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1084 | // Bail out if the result is supposed to be negative zero. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1085 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1086 | __ test(left, Operand(left)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1087 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1088 | if (right->IsConstantOperand()) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1089 | if (ToInteger32(LConstantOperand::cast(right)) <= 0) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1090 | DeoptimizeIf(no_condition, instr->environment()); |
| 1091 | } |
| 1092 | } else { |
| 1093 | // Test the non-zero operand for negative sign. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1094 | __ or_(ToRegister(instr->TempAt(0)), ToOperand(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1095 | DeoptimizeIf(sign, instr->environment()); |
| 1096 | } |
| 1097 | __ bind(&done); |
| 1098 | } |
| 1099 | } |
| 1100 | |
| 1101 | |
| 1102 | void LCodeGen::DoBitI(LBitI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1103 | LOperand* left = instr->InputAt(0); |
| 1104 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1105 | ASSERT(left->Equals(instr->result())); |
| 1106 | ASSERT(left->IsRegister()); |
| 1107 | |
| 1108 | if (right->IsConstantOperand()) { |
| 1109 | int right_operand = ToInteger32(LConstantOperand::cast(right)); |
| 1110 | switch (instr->op()) { |
| 1111 | case Token::BIT_AND: |
| 1112 | __ and_(ToRegister(left), right_operand); |
| 1113 | break; |
| 1114 | case Token::BIT_OR: |
| 1115 | __ or_(ToRegister(left), right_operand); |
| 1116 | break; |
| 1117 | case Token::BIT_XOR: |
| 1118 | __ xor_(ToRegister(left), right_operand); |
| 1119 | break; |
| 1120 | default: |
| 1121 | UNREACHABLE(); |
| 1122 | break; |
| 1123 | } |
| 1124 | } else { |
| 1125 | switch (instr->op()) { |
| 1126 | case Token::BIT_AND: |
| 1127 | __ and_(ToRegister(left), ToOperand(right)); |
| 1128 | break; |
| 1129 | case Token::BIT_OR: |
| 1130 | __ or_(ToRegister(left), ToOperand(right)); |
| 1131 | break; |
| 1132 | case Token::BIT_XOR: |
| 1133 | __ xor_(ToRegister(left), ToOperand(right)); |
| 1134 | break; |
| 1135 | default: |
| 1136 | UNREACHABLE(); |
| 1137 | break; |
| 1138 | } |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | |
| 1143 | void LCodeGen::DoShiftI(LShiftI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1144 | LOperand* left = instr->InputAt(0); |
| 1145 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1146 | ASSERT(left->Equals(instr->result())); |
| 1147 | ASSERT(left->IsRegister()); |
| 1148 | if (right->IsRegister()) { |
| 1149 | ASSERT(ToRegister(right).is(ecx)); |
| 1150 | |
| 1151 | switch (instr->op()) { |
| 1152 | case Token::SAR: |
| 1153 | __ sar_cl(ToRegister(left)); |
| 1154 | break; |
| 1155 | case Token::SHR: |
| 1156 | __ shr_cl(ToRegister(left)); |
| 1157 | if (instr->can_deopt()) { |
| 1158 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1159 | DeoptimizeIf(not_zero, instr->environment()); |
| 1160 | } |
| 1161 | break; |
| 1162 | case Token::SHL: |
| 1163 | __ shl_cl(ToRegister(left)); |
| 1164 | break; |
| 1165 | default: |
| 1166 | UNREACHABLE(); |
| 1167 | break; |
| 1168 | } |
| 1169 | } else { |
| 1170 | int value = ToInteger32(LConstantOperand::cast(right)); |
| 1171 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1172 | switch (instr->op()) { |
| 1173 | case Token::SAR: |
| 1174 | if (shift_count != 0) { |
| 1175 | __ sar(ToRegister(left), shift_count); |
| 1176 | } |
| 1177 | break; |
| 1178 | case Token::SHR: |
| 1179 | if (shift_count == 0 && instr->can_deopt()) { |
| 1180 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1181 | DeoptimizeIf(not_zero, instr->environment()); |
| 1182 | } else { |
| 1183 | __ shr(ToRegister(left), shift_count); |
| 1184 | } |
| 1185 | break; |
| 1186 | case Token::SHL: |
| 1187 | if (shift_count != 0) { |
| 1188 | __ shl(ToRegister(left), shift_count); |
| 1189 | } |
| 1190 | break; |
| 1191 | default: |
| 1192 | UNREACHABLE(); |
| 1193 | break; |
| 1194 | } |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | void LCodeGen::DoSubI(LSubI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1200 | LOperand* left = instr->InputAt(0); |
| 1201 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1202 | ASSERT(left->Equals(instr->result())); |
| 1203 | |
| 1204 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1205 | __ sub(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1206 | } else { |
| 1207 | __ sub(ToRegister(left), ToOperand(right)); |
| 1208 | } |
| 1209 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1210 | DeoptimizeIf(overflow, instr->environment()); |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | |
| 1215 | void LCodeGen::DoConstantI(LConstantI* instr) { |
| 1216 | ASSERT(instr->result()->IsRegister()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1217 | __ Set(ToRegister(instr->result()), Immediate(instr->value())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | |
| 1221 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1222 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1223 | XMMRegister res = ToDoubleRegister(instr->result()); |
| 1224 | double v = instr->value(); |
| 1225 | // Use xor to produce +0.0 in a fast and compact way, but avoid to |
| 1226 | // do so if the constant is -0.0. |
| 1227 | if (BitCast<uint64_t, double>(v) == 0) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1228 | __ xorps(res, res); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1229 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1230 | Register temp = ToRegister(instr->TempAt(0)); |
| 1231 | uint64_t int_val = BitCast<uint64_t, double>(v); |
| 1232 | int32_t lower = static_cast<int32_t>(int_val); |
| 1233 | int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1234 | if (CpuFeatures::IsSupported(SSE4_1)) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1235 | CpuFeatures::Scope scope(SSE4_1); |
| 1236 | if (lower != 0) { |
| 1237 | __ Set(temp, Immediate(lower)); |
| 1238 | __ movd(res, Operand(temp)); |
| 1239 | __ Set(temp, Immediate(upper)); |
| 1240 | __ pinsrd(res, Operand(temp), 1); |
| 1241 | } else { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1242 | __ xorps(res, res); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1243 | __ Set(temp, Immediate(upper)); |
| 1244 | __ pinsrd(res, Operand(temp), 1); |
| 1245 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1246 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1247 | __ Set(temp, Immediate(upper)); |
| 1248 | __ movd(res, Operand(temp)); |
| 1249 | __ psllq(res, 32); |
| 1250 | if (lower != 0) { |
| 1251 | __ Set(temp, Immediate(lower)); |
| 1252 | __ movd(xmm0, Operand(temp)); |
| 1253 | __ por(res, xmm0); |
| 1254 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1255 | } |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | |
| 1260 | void LCodeGen::DoConstantT(LConstantT* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1261 | Register reg = ToRegister(instr->result()); |
| 1262 | Handle<Object> handle = instr->value(); |
| 1263 | if (handle->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1264 | __ LoadHeapObject(reg, Handle<HeapObject>::cast(handle)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1265 | } else { |
| 1266 | __ Set(reg, Immediate(handle)); |
| 1267 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1271 | void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1272 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1273 | Register array = ToRegister(instr->InputAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1274 | __ mov(result, FieldOperand(array, JSArray::kLengthOffset)); |
| 1275 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1276 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1277 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1278 | void LCodeGen::DoFixedArrayBaseLength( |
| 1279 | LFixedArrayBaseLength* instr) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1280 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1281 | Register array = ToRegister(instr->InputAt(0)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1282 | __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1283 | } |
| 1284 | |
| 1285 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1286 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1287 | Register result = ToRegister(instr->result()); |
| 1288 | Register input = ToRegister(instr->InputAt(0)); |
| 1289 | |
| 1290 | // Load map into |result|. |
| 1291 | __ mov(result, FieldOperand(input, HeapObject::kMapOffset)); |
| 1292 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1293 | // but the following masking takes care of that anyway. |
| 1294 | __ mov(result, FieldOperand(result, Map::kBitField2Offset)); |
| 1295 | // Retrieve elements_kind from bit field 2. |
| 1296 | __ and_(result, Map::kElementsKindMask); |
| 1297 | __ shr(result, Map::kElementsKindShift); |
| 1298 | } |
| 1299 | |
| 1300 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1301 | void LCodeGen::DoValueOf(LValueOf* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1302 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1303 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1304 | Register map = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1305 | ASSERT(input.is(result)); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1306 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1307 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1308 | // If the object is a smi return the object. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1309 | __ JumpIfSmi(input, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1310 | |
| 1311 | // If the object is not a value type, return the object. |
| 1312 | __ CmpObjectType(input, JS_VALUE_TYPE, map); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1313 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1314 | __ mov(result, FieldOperand(input, JSValue::kValueOffset)); |
| 1315 | |
| 1316 | __ bind(&done); |
| 1317 | } |
| 1318 | |
| 1319 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 1320 | void LCodeGen::DoDateField(LDateField* instr) { |
| 1321 | Register object = ToRegister(instr->InputAt(0)); |
| 1322 | Register result = ToRegister(instr->result()); |
| 1323 | Register scratch = ToRegister(instr->TempAt(0)); |
| 1324 | Smi* index = instr->index(); |
| 1325 | Label runtime, done; |
| 1326 | ASSERT(object.is(result)); |
| 1327 | ASSERT(object.is(eax)); |
| 1328 | |
| 1329 | #ifdef DEBUG |
| 1330 | __ AbortIfSmi(object); |
| 1331 | __ CmpObjectType(object, JS_DATE_TYPE, scratch); |
| 1332 | __ Assert(equal, "Trying to get date field from non-date."); |
| 1333 | #endif |
| 1334 | |
| 1335 | if (index->value() == 0) { |
| 1336 | __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
| 1337 | } else { |
| 1338 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1339 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1340 | __ mov(scratch, Operand::StaticVariable(stamp)); |
| 1341 | __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
| 1342 | __ j(not_equal, &runtime, Label::kNear); |
| 1343 | __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
| 1344 | kPointerSize * index->value())); |
| 1345 | __ jmp(&done); |
| 1346 | } |
| 1347 | __ bind(&runtime); |
| 1348 | __ PrepareCallCFunction(2, scratch); |
| 1349 | __ mov(Operand(esp, 0), object); |
| 1350 | __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
| 1351 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1352 | __ bind(&done); |
| 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1357 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1358 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1359 | ASSERT(input->Equals(instr->result())); |
| 1360 | __ not_(ToRegister(input)); |
| 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | void LCodeGen::DoThrow(LThrow* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1365 | __ push(ToOperand(instr->value())); |
| 1366 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1367 | CallRuntime(Runtime::kThrow, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1368 | |
| 1369 | if (FLAG_debug_code) { |
| 1370 | Comment("Unreachable code."); |
| 1371 | __ int3(); |
| 1372 | } |
| 1373 | } |
| 1374 | |
| 1375 | |
| 1376 | void LCodeGen::DoAddI(LAddI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1377 | LOperand* left = instr->InputAt(0); |
| 1378 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1379 | ASSERT(left->Equals(instr->result())); |
| 1380 | |
| 1381 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1382 | __ add(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1383 | } else { |
| 1384 | __ add(ToRegister(left), ToOperand(right)); |
| 1385 | } |
| 1386 | |
| 1387 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1388 | DeoptimizeIf(overflow, instr->environment()); |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | |
| 1393 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1394 | XMMRegister left = ToDoubleRegister(instr->InputAt(0)); |
| 1395 | XMMRegister right = ToDoubleRegister(instr->InputAt(1)); |
| 1396 | XMMRegister result = ToDoubleRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1397 | // Modulo uses a fixed result register. |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1398 | ASSERT(instr->op() == Token::MOD || left.is(result)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1399 | switch (instr->op()) { |
| 1400 | case Token::ADD: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1401 | __ addsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1402 | break; |
| 1403 | case Token::SUB: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1404 | __ subsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1405 | break; |
| 1406 | case Token::MUL: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1407 | __ mulsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1408 | break; |
| 1409 | case Token::DIV: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1410 | __ divsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1411 | break; |
| 1412 | case Token::MOD: { |
| 1413 | // Pass two doubles as arguments on the stack. |
| 1414 | __ PrepareCallCFunction(4, eax); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1415 | __ movdbl(Operand(esp, 0 * kDoubleSize), left); |
| 1416 | __ movdbl(Operand(esp, 1 * kDoubleSize), right); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1417 | __ CallCFunction( |
| 1418 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1419 | 4); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1420 | |
| 1421 | // Return value is in st(0) on ia32. |
| 1422 | // Store it into the (fixed) result register. |
| 1423 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 1424 | __ fstp_d(Operand(esp, 0)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1425 | __ movdbl(result, Operand(esp, 0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1426 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 1427 | break; |
| 1428 | } |
| 1429 | default: |
| 1430 | UNREACHABLE(); |
| 1431 | break; |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | |
| 1436 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1437 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1438 | ASSERT(ToRegister(instr->left()).is(edx)); |
| 1439 | ASSERT(ToRegister(instr->right()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1440 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 1441 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1442 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1443 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1444 | __ nop(); // Signals no inlined code. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | |
| 1448 | int LCodeGen::GetNextEmittedBlock(int block) { |
| 1449 | for (int i = block + 1; i < graph()->blocks()->length(); ++i) { |
| 1450 | LLabel* label = chunk_->GetLabel(i); |
| 1451 | if (!label->HasReplacement()) return i; |
| 1452 | } |
| 1453 | return -1; |
| 1454 | } |
| 1455 | |
| 1456 | |
| 1457 | void LCodeGen::EmitBranch(int left_block, int right_block, Condition cc) { |
| 1458 | int next_block = GetNextEmittedBlock(current_block_); |
| 1459 | right_block = chunk_->LookupDestination(right_block); |
| 1460 | left_block = chunk_->LookupDestination(left_block); |
| 1461 | |
| 1462 | if (right_block == left_block) { |
| 1463 | EmitGoto(left_block); |
| 1464 | } else if (left_block == next_block) { |
| 1465 | __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); |
| 1466 | } else if (right_block == next_block) { |
| 1467 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1468 | } else { |
| 1469 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1470 | __ jmp(chunk_->GetAssemblyLabel(right_block)); |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | void LCodeGen::DoBranch(LBranch* instr) { |
| 1476 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1477 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1478 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1479 | Representation r = instr->hydrogen()->value()->representation(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1480 | if (r.IsInteger32()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1481 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1482 | __ test(reg, Operand(reg)); |
| 1483 | EmitBranch(true_block, false_block, not_zero); |
| 1484 | } else if (r.IsDouble()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1485 | XMMRegister reg = ToDoubleRegister(instr->InputAt(0)); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1486 | __ xorps(xmm0, xmm0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1487 | __ ucomisd(reg, xmm0); |
| 1488 | EmitBranch(true_block, false_block, not_equal); |
| 1489 | } else { |
| 1490 | ASSERT(r.IsTagged()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1491 | Register reg = ToRegister(instr->InputAt(0)); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1492 | HType type = instr->hydrogen()->value()->type(); |
| 1493 | if (type.IsBoolean()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1494 | __ cmp(reg, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1495 | EmitBranch(true_block, false_block, equal); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1496 | } else if (type.IsSmi()) { |
| 1497 | __ test(reg, Operand(reg)); |
| 1498 | EmitBranch(true_block, false_block, not_equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1499 | } else { |
| 1500 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1501 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1502 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1503 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 1504 | // Avoid deopts in the case where we've never executed this path before. |
| 1505 | if (expected.IsEmpty()) expected = ToBooleanStub::all_types(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1506 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1507 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 1508 | // undefined -> false. |
| 1509 | __ cmp(reg, factory()->undefined_value()); |
| 1510 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1511 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1512 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 1513 | // true -> true. |
| 1514 | __ cmp(reg, factory()->true_value()); |
| 1515 | __ j(equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1516 | // false -> false. |
| 1517 | __ cmp(reg, factory()->false_value()); |
| 1518 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1519 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1520 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 1521 | // 'null' -> false. |
| 1522 | __ cmp(reg, factory()->null_value()); |
| 1523 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1524 | } |
| 1525 | |
| 1526 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 1527 | // Smis: 0 -> false, all other -> true. |
| 1528 | __ test(reg, Operand(reg)); |
| 1529 | __ j(equal, false_label); |
| 1530 | __ JumpIfSmi(reg, true_label); |
| 1531 | } else if (expected.NeedsMap()) { |
| 1532 | // If we need a map later and have a Smi -> deopt. |
| 1533 | __ test(reg, Immediate(kSmiTagMask)); |
| 1534 | DeoptimizeIf(zero, instr->environment()); |
| 1535 | } |
| 1536 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1537 | Register map = no_reg; // Keep the compiler happy. |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1538 | if (expected.NeedsMap()) { |
| 1539 | map = ToRegister(instr->TempAt(0)); |
| 1540 | ASSERT(!map.is(reg)); |
| 1541 | __ mov(map, FieldOperand(reg, HeapObject::kMapOffset)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1542 | |
| 1543 | if (expected.CanBeUndetectable()) { |
| 1544 | // Undetectable -> false. |
| 1545 | __ test_b(FieldOperand(map, Map::kBitFieldOffset), |
| 1546 | 1 << Map::kIsUndetectable); |
| 1547 | __ j(not_zero, false_label); |
| 1548 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1549 | } |
| 1550 | |
| 1551 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 1552 | // spec object -> true. |
| 1553 | __ CmpInstanceType(map, FIRST_SPEC_OBJECT_TYPE); |
| 1554 | __ j(above_equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 1558 | // String value -> false iff empty. |
| 1559 | Label not_string; |
| 1560 | __ CmpInstanceType(map, FIRST_NONSTRING_TYPE); |
| 1561 | __ j(above_equal, ¬_string, Label::kNear); |
| 1562 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
| 1563 | __ j(not_zero, true_label); |
| 1564 | __ jmp(false_label); |
| 1565 | __ bind(¬_string); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1566 | } |
| 1567 | |
| 1568 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1569 | // heap number -> false iff +0, -0, or NaN. |
| 1570 | Label not_heap_number; |
| 1571 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| 1572 | factory()->heap_number_map()); |
| 1573 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 1574 | __ fldz(); |
| 1575 | __ fld_d(FieldOperand(reg, HeapNumber::kValueOffset)); |
| 1576 | __ FCmp(); |
| 1577 | __ j(zero, false_label); |
| 1578 | __ jmp(true_label); |
| 1579 | __ bind(¬_heap_number); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1580 | } |
| 1581 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1582 | // We've seen something for the first time -> deopt. |
| 1583 | DeoptimizeIf(no_condition, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1584 | } |
| 1585 | } |
| 1586 | } |
| 1587 | |
| 1588 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1589 | void LCodeGen::EmitGoto(int block) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1590 | block = chunk_->LookupDestination(block); |
| 1591 | int next_block = GetNextEmittedBlock(current_block_); |
| 1592 | if (block != next_block) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1593 | __ jmp(chunk_->GetAssemblyLabel(block)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1594 | } |
| 1595 | } |
| 1596 | |
| 1597 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1598 | void LCodeGen::DoGoto(LGoto* instr) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1599 | EmitGoto(instr->block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1600 | } |
| 1601 | |
| 1602 | |
| 1603 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 1604 | Condition cond = no_condition; |
| 1605 | switch (op) { |
| 1606 | case Token::EQ: |
| 1607 | case Token::EQ_STRICT: |
| 1608 | cond = equal; |
| 1609 | break; |
| 1610 | case Token::LT: |
| 1611 | cond = is_unsigned ? below : less; |
| 1612 | break; |
| 1613 | case Token::GT: |
| 1614 | cond = is_unsigned ? above : greater; |
| 1615 | break; |
| 1616 | case Token::LTE: |
| 1617 | cond = is_unsigned ? below_equal : less_equal; |
| 1618 | break; |
| 1619 | case Token::GTE: |
| 1620 | cond = is_unsigned ? above_equal : greater_equal; |
| 1621 | break; |
| 1622 | case Token::IN: |
| 1623 | case Token::INSTANCEOF: |
| 1624 | default: |
| 1625 | UNREACHABLE(); |
| 1626 | } |
| 1627 | return cond; |
| 1628 | } |
| 1629 | |
| 1630 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1631 | void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1632 | LOperand* left = instr->InputAt(0); |
| 1633 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1634 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1635 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1636 | Condition cc = TokenToCondition(instr->op(), instr->is_double()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1637 | |
| 1638 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 1639 | // We can statically evaluate the comparison. |
| 1640 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 1641 | double right_val = ToDouble(LConstantOperand::cast(right)); |
| 1642 | int next_block = |
| 1643 | EvalComparison(instr->op(), left_val, right_val) ? true_block |
| 1644 | : false_block; |
| 1645 | EmitGoto(next_block); |
| 1646 | } else { |
| 1647 | if (instr->is_double()) { |
| 1648 | // Don't base result on EFLAGS when a NaN is involved. Instead |
| 1649 | // jump to the false block. |
| 1650 | __ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
| 1651 | __ j(parity_even, chunk_->GetAssemblyLabel(false_block)); |
| 1652 | } else { |
| 1653 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1654 | __ cmp(ToRegister(left), ToInteger32Immediate(right)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1655 | } else if (left->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1656 | __ cmp(ToOperand(right), ToInteger32Immediate(left)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1657 | // We transposed the operands. Reverse the condition. |
| 1658 | cc = ReverseCondition(cc); |
| 1659 | } else { |
| 1660 | __ cmp(ToRegister(left), ToOperand(right)); |
| 1661 | } |
| 1662 | } |
| 1663 | EmitBranch(true_block, false_block, cc); |
| 1664 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1665 | } |
| 1666 | |
| 1667 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1668 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1669 | Register left = ToRegister(instr->InputAt(0)); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1670 | Operand right = ToOperand(instr->InputAt(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1671 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1672 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1673 | |
| 1674 | __ cmp(left, Operand(right)); |
| 1675 | EmitBranch(true_block, false_block, equal); |
| 1676 | } |
| 1677 | |
| 1678 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1679 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
| 1680 | Register left = ToRegister(instr->InputAt(0)); |
| 1681 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1682 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1683 | |
| 1684 | __ cmp(left, instr->hydrogen()->right()); |
| 1685 | EmitBranch(true_block, false_block, equal); |
| 1686 | } |
| 1687 | |
| 1688 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1689 | void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1690 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1691 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1692 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1693 | // If the expression is known to be untagged or a smi, then it's definitely |
| 1694 | // not null, and it can't be a an undetectable object. |
| 1695 | if (instr->hydrogen()->representation().IsSpecialization() || |
| 1696 | instr->hydrogen()->type().IsSmi()) { |
| 1697 | EmitGoto(false_block); |
| 1698 | return; |
| 1699 | } |
| 1700 | |
| 1701 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1702 | Handle<Object> nil_value = instr->nil() == kNullValue ? |
| 1703 | factory()->null_value() : |
| 1704 | factory()->undefined_value(); |
| 1705 | __ cmp(reg, nil_value); |
| 1706 | if (instr->kind() == kStrictEquality) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1707 | EmitBranch(true_block, false_block, equal); |
| 1708 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1709 | Handle<Object> other_nil_value = instr->nil() == kNullValue ? |
| 1710 | factory()->undefined_value() : |
| 1711 | factory()->null_value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1712 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1713 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1714 | __ j(equal, true_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1715 | __ cmp(reg, other_nil_value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1716 | __ j(equal, true_label); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1717 | __ JumpIfSmi(reg, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1718 | // Check for undetectable objects by looking in the bit field in |
| 1719 | // the map. The object has already been smi checked. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1720 | Register scratch = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1721 | __ mov(scratch, FieldOperand(reg, HeapObject::kMapOffset)); |
| 1722 | __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset)); |
| 1723 | __ test(scratch, Immediate(1 << Map::kIsUndetectable)); |
| 1724 | EmitBranch(true_block, false_block, not_zero); |
| 1725 | } |
| 1726 | } |
| 1727 | |
| 1728 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1729 | Condition LCodeGen::EmitIsObject(Register input, |
| 1730 | Register temp1, |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1731 | Label* is_not_object, |
| 1732 | Label* is_object) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1733 | __ JumpIfSmi(input, is_not_object); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1734 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1735 | __ cmp(input, isolate()->factory()->null_value()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1736 | __ j(equal, is_object); |
| 1737 | |
| 1738 | __ mov(temp1, FieldOperand(input, HeapObject::kMapOffset)); |
| 1739 | // Undetectable objects behave like undefined. |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1740 | __ test_b(FieldOperand(temp1, Map::kBitFieldOffset), |
| 1741 | 1 << Map::kIsUndetectable); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1742 | __ j(not_zero, is_not_object); |
| 1743 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1744 | __ movzx_b(temp1, FieldOperand(temp1, Map::kInstanceTypeOffset)); |
| 1745 | __ cmp(temp1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1746 | __ j(below, is_not_object); |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1747 | __ cmp(temp1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1748 | return below_equal; |
| 1749 | } |
| 1750 | |
| 1751 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1752 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1753 | Register reg = ToRegister(instr->InputAt(0)); |
| 1754 | Register temp = ToRegister(instr->TempAt(0)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1755 | |
| 1756 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1757 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1758 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1759 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1760 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1761 | Condition true_cond = EmitIsObject(reg, temp, false_label, true_label); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1762 | |
| 1763 | EmitBranch(true_block, false_block, true_cond); |
| 1764 | } |
| 1765 | |
| 1766 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1767 | Condition LCodeGen::EmitIsString(Register input, |
| 1768 | Register temp1, |
| 1769 | Label* is_not_string) { |
| 1770 | __ JumpIfSmi(input, is_not_string); |
| 1771 | |
| 1772 | Condition cond = masm_->IsObjectStringType(input, temp1, temp1); |
| 1773 | |
| 1774 | return cond; |
| 1775 | } |
| 1776 | |
| 1777 | |
| 1778 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
| 1779 | Register reg = ToRegister(instr->InputAt(0)); |
| 1780 | Register temp = ToRegister(instr->TempAt(0)); |
| 1781 | |
| 1782 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1783 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1784 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1785 | |
| 1786 | Condition true_cond = EmitIsString(reg, temp, false_label); |
| 1787 | |
| 1788 | EmitBranch(true_block, false_block, true_cond); |
| 1789 | } |
| 1790 | |
| 1791 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1792 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1793 | Operand input = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1794 | |
| 1795 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1796 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1797 | |
| 1798 | __ test(input, Immediate(kSmiTagMask)); |
| 1799 | EmitBranch(true_block, false_block, zero); |
| 1800 | } |
| 1801 | |
| 1802 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1803 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
| 1804 | Register input = ToRegister(instr->InputAt(0)); |
| 1805 | Register temp = ToRegister(instr->TempAt(0)); |
| 1806 | |
| 1807 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1808 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1809 | |
| 1810 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1811 | __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1812 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 1813 | __ test_b(FieldOperand(temp, Map::kBitFieldOffset), |
| 1814 | 1 << Map::kIsUndetectable); |
| 1815 | EmitBranch(true_block, false_block, not_zero); |
| 1816 | } |
| 1817 | |
| 1818 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1819 | static Condition ComputeCompareCondition(Token::Value op) { |
| 1820 | switch (op) { |
| 1821 | case Token::EQ_STRICT: |
| 1822 | case Token::EQ: |
| 1823 | return equal; |
| 1824 | case Token::LT: |
| 1825 | return less; |
| 1826 | case Token::GT: |
| 1827 | return greater; |
| 1828 | case Token::LTE: |
| 1829 | return less_equal; |
| 1830 | case Token::GTE: |
| 1831 | return greater_equal; |
| 1832 | default: |
| 1833 | UNREACHABLE(); |
| 1834 | return no_condition; |
| 1835 | } |
| 1836 | } |
| 1837 | |
| 1838 | |
| 1839 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 1840 | Token::Value op = instr->op(); |
| 1841 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1842 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1843 | |
| 1844 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
| 1845 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 1846 | |
| 1847 | Condition condition = ComputeCompareCondition(op); |
| 1848 | __ test(eax, Operand(eax)); |
| 1849 | |
| 1850 | EmitBranch(true_block, false_block, condition); |
| 1851 | } |
| 1852 | |
| 1853 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1854 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1855 | InstanceType from = instr->from(); |
| 1856 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1857 | if (from == FIRST_TYPE) return to; |
| 1858 | ASSERT(from == to || to == LAST_TYPE); |
| 1859 | return from; |
| 1860 | } |
| 1861 | |
| 1862 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1863 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1864 | InstanceType from = instr->from(); |
| 1865 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1866 | if (from == to) return equal; |
| 1867 | if (to == LAST_TYPE) return above_equal; |
| 1868 | if (from == FIRST_TYPE) return below_equal; |
| 1869 | UNREACHABLE(); |
| 1870 | return equal; |
| 1871 | } |
| 1872 | |
| 1873 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1874 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1875 | Register input = ToRegister(instr->InputAt(0)); |
| 1876 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1877 | |
| 1878 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1879 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1880 | |
| 1881 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1882 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1883 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1884 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1885 | __ CmpObjectType(input, TestType(instr->hydrogen()), temp); |
| 1886 | EmitBranch(true_block, false_block, BranchCondition(instr->hydrogen())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1887 | } |
| 1888 | |
| 1889 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1890 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
| 1891 | Register input = ToRegister(instr->InputAt(0)); |
| 1892 | Register result = ToRegister(instr->result()); |
| 1893 | |
| 1894 | if (FLAG_debug_code) { |
| 1895 | __ AbortIfNotString(input); |
| 1896 | } |
| 1897 | |
| 1898 | __ mov(result, FieldOperand(input, String::kHashFieldOffset)); |
| 1899 | __ IndexFromHash(result, result); |
| 1900 | } |
| 1901 | |
| 1902 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1903 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 1904 | LHasCachedArrayIndexAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1905 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1906 | |
| 1907 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1908 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1909 | |
| 1910 | __ test(FieldOperand(input, String::kHashFieldOffset), |
| 1911 | Immediate(String::kContainsCachedArrayIndexMask)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1912 | EmitBranch(true_block, false_block, equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1913 | } |
| 1914 | |
| 1915 | |
| 1916 | // 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] | 1917 | // the temp registers, but not the input. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1918 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 1919 | Label* is_false, |
| 1920 | Handle<String>class_name, |
| 1921 | Register input, |
| 1922 | Register temp, |
| 1923 | Register temp2) { |
| 1924 | ASSERT(!input.is(temp)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1925 | ASSERT(!input.is(temp2)); |
| 1926 | ASSERT(!temp.is(temp2)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1927 | __ JumpIfSmi(input, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1928 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1929 | if (class_name->IsEqualTo(CStrVector("Function"))) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1930 | // Assuming the following assertions, we can use the same compares to test |
| 1931 | // for both being a function type and being in the object type range. |
| 1932 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 1933 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 1934 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 1935 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 1936 | LAST_SPEC_OBJECT_TYPE - 1); |
| 1937 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 1938 | __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
| 1939 | __ j(below, is_false); |
| 1940 | __ j(equal, is_true); |
| 1941 | __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
| 1942 | __ j(equal, is_true); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1943 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1944 | // Faster code path to avoid two compares: subtract lower bound from the |
| 1945 | // actual type and do a signed compare with the width of the type range. |
| 1946 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 1947 | __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1948 | __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 1949 | __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 1950 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1951 | __ j(above, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1952 | } |
| 1953 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1954 | // 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] | 1955 | // Check if the constructor in the map is a function. |
| 1956 | __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1957 | // Objects with a non-function constructor have class 'Object'. |
| 1958 | __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); |
| 1959 | if (class_name->IsEqualTo(CStrVector("Object"))) { |
| 1960 | __ j(not_equal, is_true); |
| 1961 | } else { |
| 1962 | __ j(not_equal, is_false); |
| 1963 | } |
| 1964 | |
| 1965 | // temp now contains the constructor function. Grab the |
| 1966 | // instance class name from there. |
| 1967 | __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 1968 | __ mov(temp, FieldOperand(temp, |
| 1969 | SharedFunctionInfo::kInstanceClassNameOffset)); |
| 1970 | // The class name we are testing against is a symbol because it's a literal. |
| 1971 | // The name in the constructor is a symbol because of the way the context is |
| 1972 | // booted. This routine isn't expected to work for random API-created |
| 1973 | // classes and it doesn't have to because you can't access it with natives |
| 1974 | // syntax. Since both sides are symbols it is sufficient to use an identity |
| 1975 | // comparison. |
| 1976 | __ cmp(temp, class_name); |
| 1977 | // End with the answer in the z flag. |
| 1978 | } |
| 1979 | |
| 1980 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1981 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1982 | Register input = ToRegister(instr->InputAt(0)); |
| 1983 | Register temp = ToRegister(instr->TempAt(0)); |
| 1984 | Register temp2 = ToRegister(instr->TempAt(1)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1985 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1986 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 1987 | |
| 1988 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1989 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1990 | |
| 1991 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1992 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1993 | |
| 1994 | EmitClassOfTest(true_label, false_label, class_name, input, temp, temp2); |
| 1995 | |
| 1996 | EmitBranch(true_block, false_block, equal); |
| 1997 | } |
| 1998 | |
| 1999 | |
| 2000 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2001 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2002 | int true_block = instr->true_block_id(); |
| 2003 | int false_block = instr->false_block_id(); |
| 2004 | |
| 2005 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map()); |
| 2006 | EmitBranch(true_block, false_block, equal); |
| 2007 | } |
| 2008 | |
| 2009 | |
| 2010 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2011 | // Object and function are in fixed registers defined by the stub. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2012 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2013 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2014 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2015 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2016 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2017 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2018 | __ j(zero, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2019 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2020 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2021 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2022 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2023 | __ bind(&done); |
| 2024 | } |
| 2025 | |
| 2026 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2027 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 2028 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 2029 | public: |
| 2030 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2031 | LInstanceOfKnownGlobal* instr) |
| 2032 | : LDeferredCode(codegen), instr_(instr) { } |
| 2033 | virtual void Generate() { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2034 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2035 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2036 | virtual LInstruction* instr() { return instr_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2037 | Label* map_check() { return &map_check_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2038 | private: |
| 2039 | LInstanceOfKnownGlobal* instr_; |
| 2040 | Label map_check_; |
| 2041 | }; |
| 2042 | |
| 2043 | DeferredInstanceOfKnownGlobal* deferred; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2044 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2045 | |
| 2046 | Label done, false_result; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2047 | Register object = ToRegister(instr->InputAt(1)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2048 | Register temp = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2049 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2050 | // A Smi is not an instance of anything. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2051 | __ JumpIfSmi(object, &false_result); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2052 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2053 | // 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] | 2054 | // hole value will be patched to the last map/result pair generated by the |
| 2055 | // instanceof stub. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2056 | Label cache_miss; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2057 | Register map = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2058 | __ mov(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2059 | __ bind(deferred->map_check()); // Label for calculating code patching. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2060 | Handle<JSGlobalPropertyCell> cache_cell = |
| 2061 | factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
| 2062 | __ cmp(map, Operand::Cell(cache_cell)); // Patched to cached map. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2063 | __ j(not_equal, &cache_miss, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2064 | __ 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] | 2065 | __ jmp(&done); |
| 2066 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2067 | // The inlined call site cache did not match. Check for null and string |
| 2068 | // before calling the deferred code. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2069 | __ bind(&cache_miss); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2070 | // Null is not an instance of anything. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2071 | __ cmp(object, factory()->null_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2072 | __ j(equal, &false_result); |
| 2073 | |
| 2074 | // String values are not instances of anything. |
| 2075 | Condition is_string = masm_->IsObjectStringType(object, temp, temp); |
| 2076 | __ j(is_string, &false_result); |
| 2077 | |
| 2078 | // Go to the deferred code. |
| 2079 | __ jmp(deferred->entry()); |
| 2080 | |
| 2081 | __ bind(&false_result); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2082 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2083 | |
| 2084 | // Here result has either true or false. Deferred code also produces true or |
| 2085 | // false object. |
| 2086 | __ bind(deferred->exit()); |
| 2087 | __ bind(&done); |
| 2088 | } |
| 2089 | |
| 2090 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2091 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2092 | Label* map_check) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2093 | PushSafepointRegistersScope scope(this); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2094 | |
| 2095 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2096 | flags = static_cast<InstanceofStub::Flags>( |
| 2097 | flags | InstanceofStub::kArgsInRegisters); |
| 2098 | flags = static_cast<InstanceofStub::Flags>( |
| 2099 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2100 | flags = static_cast<InstanceofStub::Flags>( |
| 2101 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2102 | InstanceofStub stub(flags); |
| 2103 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2104 | // Get the temp register reserved by the instruction. This needs to be a |
| 2105 | // register which is pushed last by PushSafepointRegisters as top of the |
| 2106 | // stack is used to pass the offset to the location of the map check to |
| 2107 | // the stub. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2108 | Register temp = ToRegister(instr->TempAt(0)); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2109 | ASSERT(MacroAssembler::SafepointRegisterStackIndex(temp) == 0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2110 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2111 | static const int kAdditionalDelta = 13; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2112 | int delta = masm_->SizeOfCodeGeneratedSince(map_check) + kAdditionalDelta; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2113 | __ mov(temp, Immediate(delta)); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2114 | __ StoreToSafepointRegisterSlot(temp, temp); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2115 | CallCodeGeneric(stub.GetCode(), |
| 2116 | RelocInfo::CODE_TARGET, |
| 2117 | instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2118 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2119 | // Get the deoptimization index of the LLazyBailout-environment that |
| 2120 | // corresponds to this instruction. |
| 2121 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2122 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
| 2123 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2124 | // 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] | 2125 | __ StoreToSafepointRegisterSlot(eax, eax); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2126 | } |
| 2127 | |
| 2128 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2129 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2130 | Token::Value op = instr->op(); |
| 2131 | |
| 2132 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2133 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2134 | |
| 2135 | Condition condition = ComputeCompareCondition(op); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2136 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2137 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2138 | __ j(condition, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2139 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2140 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2141 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2142 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2143 | __ bind(&done); |
| 2144 | } |
| 2145 | |
| 2146 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2147 | void LCodeGen::DoReturn(LReturn* instr) { |
| 2148 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2149 | // Preserve the return value on the stack and rely on the runtime call |
| 2150 | // to return the value in the same register. We're leaving the code |
| 2151 | // managed by the register allocator and tearing down the frame, it's |
| 2152 | // safe to write to the context register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2153 | __ push(eax); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2154 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2155 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2156 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2157 | if (dynamic_frame_alignment_) { |
| 2158 | // Fetch the state of the dynamic frame alignment. |
| 2159 | __ mov(edx, Operand(ebp, |
| 2160 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); |
| 2161 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2162 | __ mov(esp, ebp); |
| 2163 | __ pop(ebp); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2164 | if (dynamic_frame_alignment_) { |
| 2165 | Label no_padding; |
| 2166 | __ cmp(edx, Immediate(kNoAlignmentPadding)); |
| 2167 | __ j(equal, &no_padding); |
| 2168 | if (FLAG_debug_code) { |
| 2169 | __ cmp(Operand(esp, (GetParameterCount() + 2) * kPointerSize), |
| 2170 | Immediate(kAlignmentZapValue)); |
| 2171 | __ Assert(equal, "expected alignment marker"); |
| 2172 | } |
| 2173 | __ Ret((GetParameterCount() + 2) * kPointerSize, ecx); |
| 2174 | __ bind(&no_padding); |
| 2175 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2176 | __ Ret((GetParameterCount() + 1) * kPointerSize, ecx); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2177 | } |
| 2178 | |
| 2179 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2180 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2181 | Register result = ToRegister(instr->result()); |
| 2182 | __ mov(result, Operand::Cell(instr->hydrogen()->cell())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2183 | if (instr->hydrogen()->RequiresHoleCheck()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2184 | __ cmp(result, factory()->the_hole_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2185 | DeoptimizeIf(equal, instr->environment()); |
| 2186 | } |
| 2187 | } |
| 2188 | |
| 2189 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2190 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2191 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2192 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2193 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2194 | |
| 2195 | __ mov(ecx, instr->name()); |
| 2196 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET : |
| 2197 | RelocInfo::CODE_TARGET_CONTEXT; |
| 2198 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2199 | CallCode(ic, mode, instr); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2200 | } |
| 2201 | |
| 2202 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2203 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2204 | Register value = ToRegister(instr->value()); |
| 2205 | Handle<JSGlobalPropertyCell> cell_handle = instr->hydrogen()->cell(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2206 | |
| 2207 | // If the cell we are storing to contains the hole it could have |
| 2208 | // been deleted from the property dictionary. In that case, we need |
| 2209 | // to update the property details in the property dictionary to mark |
| 2210 | // it as no longer deleted. We deoptimize in that case. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2211 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2212 | __ cmp(Operand::Cell(cell_handle), factory()->the_hole_value()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2213 | DeoptimizeIf(equal, instr->environment()); |
| 2214 | } |
| 2215 | |
| 2216 | // Store the value. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2217 | __ mov(Operand::Cell(cell_handle), value); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2218 | // Cells are always rescanned, so no write barrier here. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2219 | } |
| 2220 | |
| 2221 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2222 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2223 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 2224 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
| 2225 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 2226 | |
| 2227 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2228 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2229 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2230 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2231 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2232 | } |
| 2233 | |
| 2234 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2235 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2236 | Register context = ToRegister(instr->context()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2237 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2238 | __ mov(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2239 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2240 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2241 | __ cmp(result, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2242 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2243 | DeoptimizeIf(equal, instr->environment()); |
| 2244 | } else { |
| 2245 | Label is_not_hole; |
| 2246 | __ j(not_equal, &is_not_hole, Label::kNear); |
| 2247 | __ mov(result, factory()->undefined_value()); |
| 2248 | __ bind(&is_not_hole); |
| 2249 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2250 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2251 | } |
| 2252 | |
| 2253 | |
| 2254 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2255 | Register context = ToRegister(instr->context()); |
| 2256 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2257 | |
| 2258 | Label skip_assignment; |
| 2259 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2260 | Operand target = ContextOperand(context, instr->slot_index()); |
| 2261 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2262 | __ cmp(target, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2263 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2264 | DeoptimizeIf(equal, instr->environment()); |
| 2265 | } else { |
| 2266 | __ j(not_equal, &skip_assignment, Label::kNear); |
| 2267 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2268 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2269 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2270 | __ mov(target, value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2271 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 2272 | HType type = instr->hydrogen()->value()->type(); |
| 2273 | SmiCheck check_needed = |
| 2274 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2275 | Register temp = ToRegister(instr->TempAt(0)); |
| 2276 | int offset = Context::SlotOffset(instr->slot_index()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2277 | __ RecordWriteContextSlot(context, |
| 2278 | offset, |
| 2279 | value, |
| 2280 | temp, |
| 2281 | kSaveFPRegs, |
| 2282 | EMIT_REMEMBERED_SET, |
| 2283 | check_needed); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2284 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2285 | |
| 2286 | __ bind(&skip_assignment); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2287 | } |
| 2288 | |
| 2289 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2290 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2291 | Register object = ToRegister(instr->object()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2292 | Register result = ToRegister(instr->result()); |
| 2293 | if (instr->hydrogen()->is_in_object()) { |
| 2294 | __ mov(result, FieldOperand(object, instr->hydrogen()->offset())); |
| 2295 | } else { |
| 2296 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2297 | __ mov(result, FieldOperand(result, instr->hydrogen()->offset())); |
| 2298 | } |
| 2299 | } |
| 2300 | |
| 2301 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2302 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2303 | Register object, |
| 2304 | Handle<Map> type, |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2305 | Handle<String> name, |
| 2306 | LEnvironment* env) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2307 | LookupResult lookup(isolate()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2308 | type->LookupInDescriptors(NULL, *name, &lookup); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2309 | ASSERT(lookup.IsFound() || lookup.IsCacheable()); |
| 2310 | if (lookup.IsFound() && lookup.type() == FIELD) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2311 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2312 | int offset = index * kPointerSize; |
| 2313 | if (index < 0) { |
| 2314 | // Negative property indices are in-object properties, indexed |
| 2315 | // from the end of the fixed part of the object. |
| 2316 | __ mov(result, FieldOperand(object, offset + type->instance_size())); |
| 2317 | } else { |
| 2318 | // Non-negative property indices are in the properties array. |
| 2319 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2320 | __ mov(result, FieldOperand(result, offset + FixedArray::kHeaderSize)); |
| 2321 | } |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2322 | } else if (lookup.IsFound() && lookup.type() == CONSTANT_FUNCTION) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2323 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2324 | __ LoadHeapObject(result, function); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2325 | } else { |
| 2326 | // Negative lookup. |
| 2327 | // Check prototypes. |
| 2328 | HeapObject* current = HeapObject::cast((*type)->prototype()); |
| 2329 | Heap* heap = type->GetHeap(); |
| 2330 | while (current != heap->null_value()) { |
| 2331 | Handle<HeapObject> link(current); |
| 2332 | __ LoadHeapObject(result, link); |
| 2333 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
| 2334 | Handle<Map>(JSObject::cast(current)->map())); |
| 2335 | DeoptimizeIf(not_equal, env); |
| 2336 | current = HeapObject::cast(current->map()->prototype()); |
| 2337 | } |
| 2338 | __ mov(result, factory()->undefined_value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2339 | } |
| 2340 | } |
| 2341 | |
| 2342 | |
| 2343 | void LCodeGen::EmitPushTaggedOperand(LOperand* operand) { |
| 2344 | ASSERT(!operand->IsDoubleRegister()); |
| 2345 | if (operand->IsConstantOperand()) { |
| 2346 | Handle<Object> object = ToHandle(LConstantOperand::cast(operand)); |
| 2347 | if (object->IsSmi()) { |
| 2348 | __ Push(Handle<Smi>::cast(object)); |
| 2349 | } else { |
| 2350 | __ PushHeapObject(Handle<HeapObject>::cast(object)); |
| 2351 | } |
| 2352 | } else if (operand->IsRegister()) { |
| 2353 | __ push(ToRegister(operand)); |
| 2354 | } else { |
| 2355 | __ push(ToOperand(operand)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2356 | } |
| 2357 | } |
| 2358 | |
| 2359 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2360 | // Check for cases where EmitLoadFieldOrConstantFunction needs to walk the |
| 2361 | // prototype chain, which causes unbounded code generation. |
| 2362 | static bool CompactEmit( |
| 2363 | SmallMapList* list, Handle<String> name, int i, Isolate* isolate) { |
| 2364 | LookupResult lookup(isolate); |
| 2365 | Handle<Map> map = list->at(i); |
| 2366 | map->LookupInDescriptors(NULL, *name, &lookup); |
| 2367 | return lookup.IsFound() && |
| 2368 | (lookup.type() == FIELD || lookup.type() == CONSTANT_FUNCTION); |
| 2369 | } |
| 2370 | |
| 2371 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2372 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2373 | Register object = ToRegister(instr->object()); |
| 2374 | Register result = ToRegister(instr->result()); |
| 2375 | |
| 2376 | int map_count = instr->hydrogen()->types()->length(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2377 | bool need_generic = instr->hydrogen()->need_generic(); |
| 2378 | |
| 2379 | if (map_count == 0 && !need_generic) { |
| 2380 | DeoptimizeIf(no_condition, instr->environment()); |
| 2381 | return; |
| 2382 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2383 | Handle<String> name = instr->hydrogen()->name(); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2384 | Label done; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2385 | bool all_are_compact = true; |
| 2386 | for (int i = 0; i < map_count; ++i) { |
| 2387 | if (!CompactEmit(instr->hydrogen()->types(), name, i, isolate())) { |
| 2388 | all_are_compact = false; |
| 2389 | break; |
| 2390 | } |
| 2391 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2392 | for (int i = 0; i < map_count; ++i) { |
| 2393 | bool last = (i == map_count - 1); |
| 2394 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2395 | Label check_passed; |
| 2396 | __ CompareMap(object, map, &check_passed, ALLOW_ELEMENT_TRANSITION_MAPS); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2397 | if (last && !need_generic) { |
| 2398 | DeoptimizeIf(not_equal, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2399 | __ bind(&check_passed); |
| 2400 | EmitLoadFieldOrConstantFunction( |
| 2401 | result, object, map, name, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2402 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2403 | Label next; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2404 | bool compact = all_are_compact ? true : |
| 2405 | CompactEmit(instr->hydrogen()->types(), name, i, isolate()); |
| 2406 | __ j(not_equal, &next, compact ? Label::kNear : Label::kFar); |
| 2407 | __ bind(&check_passed); |
| 2408 | EmitLoadFieldOrConstantFunction( |
| 2409 | result, object, map, name, instr->environment()); |
| 2410 | __ jmp(&done, all_are_compact ? Label::kNear : Label::kFar); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2411 | __ bind(&next); |
| 2412 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2413 | } |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2414 | if (need_generic) { |
| 2415 | __ mov(ecx, name); |
| 2416 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
| 2417 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2418 | } |
| 2419 | __ bind(&done); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2420 | } |
| 2421 | |
| 2422 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2423 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2424 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2425 | ASSERT(ToRegister(instr->object()).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2426 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2427 | |
| 2428 | __ mov(ecx, instr->name()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2429 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2430 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2431 | } |
| 2432 | |
| 2433 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2434 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2435 | Register function = ToRegister(instr->function()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2436 | Register temp = ToRegister(instr->TempAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2437 | Register result = ToRegister(instr->result()); |
| 2438 | |
| 2439 | // Check that the function really is a function. |
| 2440 | __ CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2441 | DeoptimizeIf(not_equal, instr->environment()); |
| 2442 | |
| 2443 | // Check whether the function has an instance prototype. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2444 | Label non_instance; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2445 | __ test_b(FieldOperand(result, Map::kBitFieldOffset), |
| 2446 | 1 << Map::kHasNonInstancePrototype); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2447 | __ j(not_zero, &non_instance, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2448 | |
| 2449 | // Get the prototype or initial map from the function. |
| 2450 | __ mov(result, |
| 2451 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2452 | |
| 2453 | // Check that the function has a prototype or an initial map. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2454 | __ cmp(Operand(result), Immediate(factory()->the_hole_value())); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2455 | DeoptimizeIf(equal, instr->environment()); |
| 2456 | |
| 2457 | // 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] | 2458 | Label done; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2459 | __ CmpObjectType(result, MAP_TYPE, temp); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2460 | __ j(not_equal, &done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2461 | |
| 2462 | // Get the prototype from the initial map. |
| 2463 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2464 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2465 | |
| 2466 | // Non-instance prototype: Fetch prototype from constructor field |
| 2467 | // in the function's map. |
| 2468 | __ bind(&non_instance); |
| 2469 | __ mov(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2470 | |
| 2471 | // All done. |
| 2472 | __ bind(&done); |
| 2473 | } |
| 2474 | |
| 2475 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2476 | void LCodeGen::DoLoadElements(LLoadElements* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2477 | Register result = ToRegister(instr->result()); |
| 2478 | Register input = ToRegister(instr->InputAt(0)); |
| 2479 | __ mov(result, FieldOperand(input, JSObject::kElementsOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2480 | if (FLAG_debug_code) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2481 | Label done, ok, fail; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2482 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2483 | Immediate(factory()->fixed_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2484 | __ j(equal, &done, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2485 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2486 | Immediate(factory()->fixed_cow_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2487 | __ j(equal, &done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2488 | Register temp((result.is(eax)) ? ebx : eax); |
| 2489 | __ push(temp); |
| 2490 | __ mov(temp, FieldOperand(result, HeapObject::kMapOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2491 | __ movzx_b(temp, FieldOperand(temp, Map::kBitField2Offset)); |
| 2492 | __ and_(temp, Map::kElementsKindMask); |
| 2493 | __ shr(temp, Map::kElementsKindShift); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2494 | __ cmp(temp, GetInitialFastElementsKind()); |
| 2495 | __ j(less, &fail, Label::kNear); |
| 2496 | __ cmp(temp, TERMINAL_FAST_ELEMENTS_KIND); |
| 2497 | __ j(less_equal, &ok, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2498 | __ cmp(temp, FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2499 | __ j(less, &fail, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2500 | __ cmp(temp, LAST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2501 | __ j(less_equal, &ok, Label::kNear); |
| 2502 | __ bind(&fail); |
| 2503 | __ Abort("Check for fast or external elements failed."); |
| 2504 | __ bind(&ok); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2505 | __ pop(temp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2506 | __ bind(&done); |
| 2507 | } |
| 2508 | } |
| 2509 | |
| 2510 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2511 | void LCodeGen::DoLoadExternalArrayPointer( |
| 2512 | LLoadExternalArrayPointer* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2513 | Register result = ToRegister(instr->result()); |
| 2514 | Register input = ToRegister(instr->InputAt(0)); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2515 | __ mov(result, FieldOperand(input, |
| 2516 | ExternalArray::kExternalPointerOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2517 | } |
| 2518 | |
| 2519 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2520 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 2521 | Register arguments = ToRegister(instr->arguments()); |
| 2522 | Register length = ToRegister(instr->length()); |
| 2523 | Operand index = ToOperand(instr->index()); |
| 2524 | Register result = ToRegister(instr->result()); |
| 2525 | |
| 2526 | __ sub(length, index); |
| 2527 | DeoptimizeIf(below_equal, instr->environment()); |
| 2528 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2529 | // There are two words between the frame pointer and the last argument. |
| 2530 | // Subtracting from length accounts for one of them add one more. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2531 | __ mov(result, Operand(arguments, length, times_4, kPointerSize)); |
| 2532 | } |
| 2533 | |
| 2534 | |
| 2535 | void LCodeGen::DoLoadKeyedFastElement(LLoadKeyedFastElement* instr) { |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2536 | Register result = ToRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2537 | |
| 2538 | // Load the result. |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2539 | __ mov(result, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2540 | BuildFastArrayOperand(instr->elements(), |
| 2541 | instr->key(), |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2542 | FAST_ELEMENTS, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2543 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 2544 | instr->additional_index())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2545 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2546 | // Check for the hole value. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2547 | if (instr->hydrogen()->RequiresHoleCheck()) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 2548 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 2549 | __ test(result, Immediate(kSmiTagMask)); |
| 2550 | DeoptimizeIf(not_equal, instr->environment()); |
| 2551 | } else { |
| 2552 | __ cmp(result, factory()->the_hole_value()); |
| 2553 | DeoptimizeIf(equal, instr->environment()); |
| 2554 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2555 | } |
| 2556 | } |
| 2557 | |
| 2558 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2559 | void LCodeGen::DoLoadKeyedFastDoubleElement( |
| 2560 | LLoadKeyedFastDoubleElement* instr) { |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2561 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 2562 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2563 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2564 | int offset = FixedDoubleArray::kHeaderSize - kHeapObjectTag + |
| 2565 | sizeof(kHoleNanLower32); |
| 2566 | Operand hole_check_operand = BuildFastArrayOperand( |
| 2567 | instr->elements(), instr->key(), |
| 2568 | FAST_DOUBLE_ELEMENTS, |
| 2569 | offset, |
| 2570 | instr->additional_index()); |
| 2571 | __ cmp(hole_check_operand, Immediate(kHoleNanUpper32)); |
| 2572 | DeoptimizeIf(equal, instr->environment()); |
| 2573 | } |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2574 | |
| 2575 | Operand double_load_operand = BuildFastArrayOperand( |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2576 | instr->elements(), |
| 2577 | instr->key(), |
| 2578 | FAST_DOUBLE_ELEMENTS, |
| 2579 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 2580 | instr->additional_index()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2581 | __ movdbl(result, double_load_operand); |
| 2582 | } |
| 2583 | |
| 2584 | |
| 2585 | Operand LCodeGen::BuildFastArrayOperand( |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2586 | LOperand* elements_pointer, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2587 | LOperand* key, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2588 | ElementsKind elements_kind, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2589 | uint32_t offset, |
| 2590 | uint32_t additional_index) { |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2591 | Register elements_pointer_reg = ToRegister(elements_pointer); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2592 | int shift_size = ElementsKindToShiftSize(elements_kind); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2593 | if (key->IsConstantOperand()) { |
| 2594 | int constant_value = ToInteger32(LConstantOperand::cast(key)); |
| 2595 | if (constant_value & 0xF0000000) { |
| 2596 | Abort("array index constant value too big"); |
| 2597 | } |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2598 | return Operand(elements_pointer_reg, |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2599 | ((constant_value + additional_index) << shift_size) |
| 2600 | + offset); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2601 | } else { |
| 2602 | ScaleFactor scale_factor = static_cast<ScaleFactor>(shift_size); |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2603 | return Operand(elements_pointer_reg, |
| 2604 | ToRegister(key), |
| 2605 | scale_factor, |
| 2606 | offset + (additional_index << shift_size)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2607 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2608 | } |
| 2609 | |
| 2610 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2611 | void LCodeGen::DoLoadKeyedSpecializedArrayElement( |
| 2612 | LLoadKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2613 | ElementsKind elements_kind = instr->elements_kind(); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2614 | Operand operand(BuildFastArrayOperand(instr->external_pointer(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 2615 | instr->key(), |
| 2616 | elements_kind, |
| 2617 | 0, |
| 2618 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2619 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2620 | XMMRegister result(ToDoubleRegister(instr->result())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2621 | __ movss(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2622 | __ cvtss2sd(result, result); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2623 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2624 | __ movdbl(ToDoubleRegister(instr->result()), operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2625 | } else { |
| 2626 | Register result(ToRegister(instr->result())); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2627 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2628 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2629 | __ movsx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2630 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2631 | case EXTERNAL_PIXEL_ELEMENTS: |
| 2632 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2633 | __ movzx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2634 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2635 | case EXTERNAL_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2636 | __ movsx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2637 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2638 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2639 | __ movzx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2640 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2641 | case EXTERNAL_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2642 | __ mov(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2643 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2644 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2645 | __ mov(result, operand); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2646 | __ test(result, Operand(result)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2647 | // TODO(danno): we could be more clever here, perhaps having a special |
| 2648 | // version of the stub that detects if the overflow case actually |
| 2649 | // happens, and generate code that returns a double rather than int. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2650 | DeoptimizeIf(negative, instr->environment()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2651 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2652 | case EXTERNAL_FLOAT_ELEMENTS: |
| 2653 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2654 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2655 | case FAST_ELEMENTS: |
| 2656 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 2657 | case FAST_HOLEY_SMI_ELEMENTS: |
| 2658 | case FAST_HOLEY_ELEMENTS: |
| 2659 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2660 | case DICTIONARY_ELEMENTS: |
| 2661 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2662 | UNREACHABLE(); |
| 2663 | break; |
| 2664 | } |
| 2665 | } |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2666 | } |
| 2667 | |
| 2668 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2669 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2670 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2671 | ASSERT(ToRegister(instr->object()).is(edx)); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2672 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2673 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2674 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2675 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2676 | } |
| 2677 | |
| 2678 | |
| 2679 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 2680 | Register result = ToRegister(instr->result()); |
| 2681 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2682 | if (instr->hydrogen()->from_inlined()) { |
| 2683 | __ lea(result, Operand(esp, -2 * kPointerSize)); |
| 2684 | } else { |
| 2685 | // Check for arguments adapter frame. |
| 2686 | Label done, adapted; |
| 2687 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2688 | __ mov(result, Operand(result, StandardFrameConstants::kContextOffset)); |
| 2689 | __ cmp(Operand(result), |
| 2690 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2691 | __ j(equal, &adapted, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2692 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2693 | // No arguments adaptor frame. |
| 2694 | __ mov(result, Operand(ebp)); |
| 2695 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2696 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2697 | // Arguments adaptor frame present. |
| 2698 | __ bind(&adapted); |
| 2699 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2700 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2701 | // Result is the frame pointer for the frame if not adapted and for the real |
| 2702 | // frame below the adaptor frame if adapted. |
| 2703 | __ bind(&done); |
| 2704 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2705 | } |
| 2706 | |
| 2707 | |
| 2708 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2709 | Operand elem = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2710 | Register result = ToRegister(instr->result()); |
| 2711 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2712 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2713 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2714 | // If no arguments adaptor frame the number of arguments is fixed. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2715 | __ cmp(ebp, elem); |
| 2716 | __ mov(result, Immediate(scope()->num_parameters())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2717 | __ j(equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2718 | |
| 2719 | // Arguments adaptor frame present. Get argument length from there. |
| 2720 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2721 | __ mov(result, Operand(result, |
| 2722 | ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2723 | __ SmiUntag(result); |
| 2724 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2725 | // Argument length is in result register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2726 | __ bind(&done); |
| 2727 | } |
| 2728 | |
| 2729 | |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 2730 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2731 | Register receiver = ToRegister(instr->receiver()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2732 | Register function = ToRegister(instr->function()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2733 | Register scratch = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2734 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2735 | // If the receiver is null or undefined, we have to pass the global |
| 2736 | // object as a receiver to normal functions. Values have to be |
| 2737 | // passed unchanged to builtins and strict-mode functions. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2738 | Label global_object, receiver_ok; |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2739 | |
| 2740 | // Do not transform the receiver to object for strict mode |
| 2741 | // functions. |
| 2742 | __ mov(scratch, |
| 2743 | FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2744 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
| 2745 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 2746 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2747 | |
| 2748 | // Do not transform the receiver to object for builtins. |
| 2749 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
| 2750 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
| 2751 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2752 | |
| 2753 | // Normal function. Replace undefined or null with global receiver. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2754 | __ cmp(receiver, factory()->null_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2755 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2756 | __ cmp(receiver, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2757 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2758 | |
| 2759 | // The receiver should be a JS object. |
| 2760 | __ test(receiver, Immediate(kSmiTagMask)); |
| 2761 | DeoptimizeIf(equal, instr->environment()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2762 | __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2763 | DeoptimizeIf(below, instr->environment()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2764 | __ jmp(&receiver_ok, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2765 | |
| 2766 | __ bind(&global_object); |
| 2767 | // TODO(kmillikin): We have a hydrogen value for the global object. See |
| 2768 | // if it's better to use it than to explicitly fetch it from the context |
| 2769 | // here. |
| 2770 | __ mov(receiver, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2771 | __ mov(receiver, ContextOperand(receiver, Context::GLOBAL_INDEX)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2772 | __ mov(receiver, |
| 2773 | FieldOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2774 | __ bind(&receiver_ok); |
yangguo@chromium.org | 154ff99 | 2012-03-13 08:09:54 +0000 | [diff] [blame] | 2775 | } |
| 2776 | |
| 2777 | |
| 2778 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 2779 | Register receiver = ToRegister(instr->receiver()); |
| 2780 | Register function = ToRegister(instr->function()); |
| 2781 | Register length = ToRegister(instr->length()); |
| 2782 | Register elements = ToRegister(instr->elements()); |
| 2783 | ASSERT(receiver.is(eax)); // Used for parameter count. |
| 2784 | ASSERT(function.is(edi)); // Required by InvokeFunction. |
| 2785 | ASSERT(ToRegister(instr->result()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2786 | |
| 2787 | // Copy the arguments to this function possibly from the |
| 2788 | // adaptor frame below it. |
| 2789 | const uint32_t kArgumentsLimit = 1 * KB; |
| 2790 | __ cmp(length, kArgumentsLimit); |
| 2791 | DeoptimizeIf(above, instr->environment()); |
| 2792 | |
| 2793 | __ push(receiver); |
| 2794 | __ mov(receiver, length); |
| 2795 | |
| 2796 | // Loop through the arguments pushing them onto the execution |
| 2797 | // stack. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2798 | Label invoke, loop; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2799 | // length is a small non-negative integer, due to the test above. |
| 2800 | __ test(length, Operand(length)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2801 | __ j(zero, &invoke, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2802 | __ bind(&loop); |
| 2803 | __ push(Operand(elements, length, times_pointer_size, 1 * kPointerSize)); |
| 2804 | __ dec(length); |
| 2805 | __ j(not_zero, &loop); |
| 2806 | |
| 2807 | // Invoke the function. |
| 2808 | __ bind(&invoke); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 2809 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 2810 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 2811 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2812 | SafepointGenerator safepoint_generator( |
| 2813 | this, pointers, Safepoint::kLazyDeopt); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2814 | ParameterCount actual(eax); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2815 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 2816 | safepoint_generator, CALL_AS_METHOD); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2817 | } |
| 2818 | |
| 2819 | |
| 2820 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2821 | LOperand* argument = instr->InputAt(0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2822 | EmitPushTaggedOperand(argument); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2823 | } |
| 2824 | |
| 2825 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 2826 | void LCodeGen::DoDrop(LDrop* instr) { |
| 2827 | __ Drop(instr->count()); |
| 2828 | } |
| 2829 | |
| 2830 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2831 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 2832 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2833 | __ LoadHeapObject(result, instr->hydrogen()->closure()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2834 | } |
| 2835 | |
| 2836 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2837 | void LCodeGen::DoContext(LContext* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2838 | Register result = ToRegister(instr->result()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2839 | __ mov(result, Operand(ebp, StandardFrameConstants::kContextOffset)); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2840 | } |
| 2841 | |
| 2842 | |
| 2843 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 2844 | Register context = ToRegister(instr->context()); |
| 2845 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2846 | __ mov(result, |
| 2847 | Operand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2848 | } |
| 2849 | |
| 2850 | |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2851 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
| 2852 | ASSERT(ToRegister(instr->InputAt(0)).is(esi)); |
| 2853 | __ push(esi); // The context is the first argument. |
| 2854 | __ push(Immediate(instr->hydrogen()->pairs())); |
| 2855 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags()))); |
| 2856 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 2857 | } |
| 2858 | |
| 2859 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2860 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
| 2861 | Register context = ToRegister(instr->context()); |
| 2862 | Register result = ToRegister(instr->result()); |
| 2863 | __ mov(result, Operand(context, Context::SlotOffset(Context::GLOBAL_INDEX))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2864 | } |
| 2865 | |
| 2866 | |
| 2867 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2868 | Register global = ToRegister(instr->global()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2869 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2870 | __ mov(result, FieldOperand(global, GlobalObject::kGlobalReceiverOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2871 | } |
| 2872 | |
| 2873 | |
| 2874 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
| 2875 | int arity, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2876 | LInstruction* instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 2877 | CallKind call_kind, |
| 2878 | EDIState edi_state) { |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2879 | bool can_invoke_directly = !function->NeedsArgumentsAdaption() || |
| 2880 | function->shared()->formal_parameter_count() == arity; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2881 | |
| 2882 | LPointerMap* pointers = instr->pointer_map(); |
| 2883 | RecordPosition(pointers->position()); |
| 2884 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2885 | if (can_invoke_directly) { |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 2886 | if (edi_state == EDI_UNINITIALIZED) { |
| 2887 | __ LoadHeapObject(edi, function); |
| 2888 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2889 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2890 | // Change context if needed. |
| 2891 | bool change_context = |
| 2892 | (info()->closure()->context() != function->context()) || |
| 2893 | scope()->contains_with() || |
| 2894 | (scope()->num_heap_slots() > 0); |
| 2895 | |
| 2896 | if (change_context) { |
| 2897 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 2898 | } else { |
| 2899 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2900 | } |
| 2901 | |
| 2902 | // Set eax to arguments count if adaption is not needed. Assumes that eax |
| 2903 | // is available to write to at this point. |
| 2904 | if (!function->NeedsArgumentsAdaption()) { |
| 2905 | __ mov(eax, arity); |
| 2906 | } |
| 2907 | |
| 2908 | // Invoke function directly. |
| 2909 | __ SetCallKind(ecx, call_kind); |
| 2910 | if (*function == *info()->closure()) { |
| 2911 | __ CallSelf(); |
| 2912 | } else { |
| 2913 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 2914 | } |
| 2915 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 2916 | } else { |
| 2917 | // We need to adapt arguments. |
| 2918 | SafepointGenerator generator( |
| 2919 | this, pointers, Safepoint::kLazyDeopt); |
| 2920 | ParameterCount count(arity); |
| 2921 | __ InvokeFunction(function, count, CALL_FUNCTION, generator, call_kind); |
| 2922 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2923 | } |
| 2924 | |
| 2925 | |
| 2926 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 2927 | ASSERT(ToRegister(instr->result()).is(eax)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2928 | CallKnownFunction(instr->function(), |
| 2929 | instr->arity(), |
| 2930 | instr, |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 2931 | CALL_AS_METHOD, |
| 2932 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2933 | } |
| 2934 | |
| 2935 | |
| 2936 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2937 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2938 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2939 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2940 | DeoptimizeIf(not_equal, instr->environment()); |
| 2941 | |
| 2942 | Label done; |
| 2943 | Register tmp = input_reg.is(eax) ? ecx : eax; |
| 2944 | Register tmp2 = tmp.is(ecx) ? edx : input_reg.is(ecx) ? edx : ecx; |
| 2945 | |
| 2946 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2947 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2948 | |
| 2949 | Label negative; |
| 2950 | __ mov(tmp, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2951 | // Check the sign of the argument. If the argument is positive, just |
| 2952 | // return it. We do not need to patch the stack since |input| and |
| 2953 | // |result| are the same register and |input| will be restored |
| 2954 | // unchanged by popping safepoint registers. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2955 | __ test(tmp, Immediate(HeapNumber::kSignMask)); |
| 2956 | __ j(not_zero, &negative); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2957 | __ jmp(&done); |
| 2958 | |
| 2959 | __ bind(&negative); |
| 2960 | |
| 2961 | Label allocated, slow; |
| 2962 | __ AllocateHeapNumber(tmp, tmp2, no_reg, &slow); |
| 2963 | __ jmp(&allocated); |
| 2964 | |
| 2965 | // Slow case: Call the runtime system to do the number allocation. |
| 2966 | __ bind(&slow); |
| 2967 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2968 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, |
| 2969 | instr, instr->context()); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2970 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2971 | // Set the pointer to the new heap number in tmp. |
| 2972 | if (!tmp.is(eax)) __ mov(tmp, eax); |
| 2973 | |
| 2974 | // Restore input_reg after call to runtime. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2975 | __ LoadFromSafepointRegisterSlot(input_reg, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2976 | |
| 2977 | __ bind(&allocated); |
| 2978 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 2979 | __ and_(tmp2, ~HeapNumber::kSignMask); |
| 2980 | __ mov(FieldOperand(tmp, HeapNumber::kExponentOffset), tmp2); |
| 2981 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kMantissaOffset)); |
| 2982 | __ mov(FieldOperand(tmp, HeapNumber::kMantissaOffset), tmp2); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2983 | __ StoreToSafepointRegisterSlot(input_reg, tmp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2984 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2985 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2986 | } |
| 2987 | |
| 2988 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2989 | void LCodeGen::EmitIntegerMathAbs(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2990 | Register input_reg = ToRegister(instr->value()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2991 | __ test(input_reg, Operand(input_reg)); |
| 2992 | Label is_positive; |
| 2993 | __ j(not_sign, &is_positive); |
| 2994 | __ neg(input_reg); |
| 2995 | __ test(input_reg, Operand(input_reg)); |
| 2996 | DeoptimizeIf(negative, instr->environment()); |
| 2997 | __ bind(&is_positive); |
| 2998 | } |
| 2999 | |
| 3000 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3001 | void LCodeGen::DoMathAbs(LUnaryMathOperation* instr) { |
| 3002 | // Class for deferred case. |
| 3003 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 3004 | public: |
| 3005 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, |
| 3006 | LUnaryMathOperation* instr) |
| 3007 | : LDeferredCode(codegen), instr_(instr) { } |
| 3008 | virtual void Generate() { |
| 3009 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3010 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3011 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3012 | private: |
| 3013 | LUnaryMathOperation* instr_; |
| 3014 | }; |
| 3015 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3016 | ASSERT(instr->value()->Equals(instr->result())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3017 | Representation r = instr->hydrogen()->value()->representation(); |
| 3018 | |
| 3019 | if (r.IsDouble()) { |
| 3020 | XMMRegister scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3021 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3022 | __ xorps(scratch, scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3023 | __ subsd(scratch, input_reg); |
| 3024 | __ pand(input_reg, scratch); |
| 3025 | } else if (r.IsInteger32()) { |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3026 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3027 | } else { // Tagged case. |
| 3028 | DeferredMathAbsTaggedHeapNumber* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3029 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3030 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3031 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3032 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3033 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3034 | __ bind(deferred->exit()); |
| 3035 | } |
| 3036 | } |
| 3037 | |
| 3038 | |
| 3039 | void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { |
| 3040 | XMMRegister xmm_scratch = xmm0; |
| 3041 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3042 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3043 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3044 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 3045 | CpuFeatures::Scope scope(SSE4_1); |
| 3046 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3047 | // Deoptimize on negative zero. |
| 3048 | Label non_zero; |
| 3049 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3050 | __ ucomisd(input_reg, xmm_scratch); |
| 3051 | __ j(not_equal, &non_zero, Label::kNear); |
| 3052 | __ movmskpd(output_reg, input_reg); |
| 3053 | __ test(output_reg, Immediate(1)); |
| 3054 | DeoptimizeIf(not_zero, instr->environment()); |
| 3055 | __ bind(&non_zero); |
| 3056 | } |
| 3057 | __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
| 3058 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
| 3059 | // Overflow is signalled with minint. |
| 3060 | __ cmp(output_reg, 0x80000000u); |
| 3061 | DeoptimizeIf(equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3062 | } else { |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3063 | Label negative_sign; |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3064 | Label done; |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3065 | // Deoptimize on unordered. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3066 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3067 | __ ucomisd(input_reg, xmm_scratch); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3068 | DeoptimizeIf(parity_even, instr->environment()); |
| 3069 | __ j(below, &negative_sign, Label::kNear); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3070 | |
| 3071 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3072 | // Check for negative zero. |
| 3073 | Label positive_sign; |
| 3074 | __ j(above, &positive_sign, Label::kNear); |
| 3075 | __ movmskpd(output_reg, input_reg); |
| 3076 | __ test(output_reg, Immediate(1)); |
| 3077 | DeoptimizeIf(not_zero, instr->environment()); |
| 3078 | __ Set(output_reg, Immediate(0)); |
| 3079 | __ jmp(&done, Label::kNear); |
| 3080 | __ bind(&positive_sign); |
| 3081 | } |
| 3082 | |
| 3083 | // Use truncating instruction (OK because input is positive). |
| 3084 | __ cvttsd2si(output_reg, Operand(input_reg)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3085 | // Overflow is signalled with minint. |
| 3086 | __ cmp(output_reg, 0x80000000u); |
| 3087 | DeoptimizeIf(equal, instr->environment()); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 3088 | __ jmp(&done, Label::kNear); |
| 3089 | |
| 3090 | // Non-zero negative reaches here |
| 3091 | __ bind(&negative_sign); |
| 3092 | // Truncate, then compare and compensate |
| 3093 | __ cvttsd2si(output_reg, Operand(input_reg)); |
| 3094 | __ cvtsi2sd(xmm_scratch, output_reg); |
| 3095 | __ ucomisd(input_reg, xmm_scratch); |
| 3096 | __ j(equal, &done, Label::kNear); |
| 3097 | __ sub(output_reg, Immediate(1)); |
| 3098 | DeoptimizeIf(overflow, instr->environment()); |
| 3099 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3100 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3101 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3102 | } |
| 3103 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3104 | void LCodeGen::DoMathRound(LUnaryMathOperation* instr) { |
| 3105 | XMMRegister xmm_scratch = xmm0; |
| 3106 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3107 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3108 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3109 | Label below_half, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3110 | // xmm_scratch = 0.5 |
| 3111 | ExternalReference one_half = ExternalReference::address_of_one_half(); |
| 3112 | __ movdbl(xmm_scratch, Operand::StaticVariable(one_half)); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3113 | __ ucomisd(xmm_scratch, input_reg); |
| 3114 | __ j(above, &below_half); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3115 | // xmm_scratch = input + 0.5 |
| 3116 | __ addsd(xmm_scratch, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3117 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3118 | // Compute Math.floor(value + 0.5). |
| 3119 | // Use truncating instruction (OK because input is positive). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3120 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3121 | |
| 3122 | // Overflow is signalled with minint. |
| 3123 | __ cmp(output_reg, 0x80000000u); |
| 3124 | DeoptimizeIf(equal, instr->environment()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3125 | __ jmp(&done); |
| 3126 | |
| 3127 | __ bind(&below_half); |
| 3128 | |
| 3129 | // We return 0 for the input range [+0, 0.5[, or [-0.5, 0.5[ if |
| 3130 | // we can ignore the difference between a result of -0 and +0. |
| 3131 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3132 | // If the sign is positive, we return +0. |
| 3133 | __ movmskpd(output_reg, input_reg); |
| 3134 | __ test(output_reg, Immediate(1)); |
| 3135 | DeoptimizeIf(not_zero, instr->environment()); |
| 3136 | } else { |
| 3137 | // If the input is >= -0.5, we return +0. |
| 3138 | __ mov(output_reg, Immediate(0xBF000000)); |
| 3139 | __ movd(xmm_scratch, Operand(output_reg)); |
| 3140 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3141 | __ ucomisd(input_reg, xmm_scratch); |
| 3142 | DeoptimizeIf(below, instr->environment()); |
| 3143 | } |
| 3144 | __ Set(output_reg, Immediate(0)); |
| 3145 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3146 | } |
| 3147 | |
| 3148 | |
| 3149 | void LCodeGen::DoMathSqrt(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3150 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3151 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
| 3152 | __ sqrtsd(input_reg, input_reg); |
| 3153 | } |
| 3154 | |
| 3155 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3156 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3157 | XMMRegister xmm_scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3158 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3159 | Register scratch = ToRegister(instr->temp()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3160 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3161 | |
| 3162 | // Note that according to ECMA-262 15.8.2.13: |
| 3163 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3164 | // Math.sqrt(-Infinity) == NaN |
| 3165 | Label done, sqrt; |
| 3166 | // Check base for -Infinity. According to IEEE-754, single-precision |
| 3167 | // -Infinity has the highest 9 bits set and the lowest 23 bits cleared. |
| 3168 | __ mov(scratch, 0xFF800000); |
| 3169 | __ movd(xmm_scratch, scratch); |
| 3170 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3171 | __ ucomisd(input_reg, xmm_scratch); |
| 3172 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 3173 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 3174 | __ j(not_equal, &sqrt, Label::kNear); |
| 3175 | __ j(carry, &sqrt, Label::kNear); |
| 3176 | // If input is -Infinity, return Infinity. |
| 3177 | __ xorps(input_reg, input_reg); |
| 3178 | __ subsd(input_reg, xmm_scratch); |
| 3179 | __ jmp(&done, Label::kNear); |
| 3180 | |
| 3181 | // Square root. |
| 3182 | __ bind(&sqrt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3183 | __ xorps(xmm_scratch, xmm_scratch); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3184 | __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3185 | __ sqrtsd(input_reg, input_reg); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3186 | __ bind(&done); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3187 | } |
| 3188 | |
| 3189 | |
| 3190 | void LCodeGen::DoPower(LPower* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3191 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3192 | // Having marked this as a call, we can use any registers. |
| 3193 | // Just make sure that the input/output registers are the expected ones. |
| 3194 | ASSERT(!instr->InputAt(1)->IsDoubleRegister() || |
| 3195 | ToDoubleRegister(instr->InputAt(1)).is(xmm1)); |
| 3196 | ASSERT(!instr->InputAt(1)->IsRegister() || |
| 3197 | ToRegister(instr->InputAt(1)).is(eax)); |
| 3198 | ASSERT(ToDoubleRegister(instr->InputAt(0)).is(xmm2)); |
| 3199 | ASSERT(ToDoubleRegister(instr->result()).is(xmm3)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3200 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3201 | if (exponent_type.IsTagged()) { |
| 3202 | Label no_deopt; |
| 3203 | __ JumpIfSmi(eax, &no_deopt); |
| 3204 | __ CmpObjectType(eax, HEAP_NUMBER_TYPE, ecx); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3205 | DeoptimizeIf(not_equal, instr->environment()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3206 | __ bind(&no_deopt); |
| 3207 | MathPowStub stub(MathPowStub::TAGGED); |
| 3208 | __ CallStub(&stub); |
| 3209 | } else if (exponent_type.IsInteger32()) { |
| 3210 | MathPowStub stub(MathPowStub::INTEGER); |
| 3211 | __ CallStub(&stub); |
| 3212 | } else { |
| 3213 | ASSERT(exponent_type.IsDouble()); |
| 3214 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3215 | __ CallStub(&stub); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3216 | } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3217 | } |
| 3218 | |
| 3219 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3220 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3221 | class DeferredDoRandom: public LDeferredCode { |
| 3222 | public: |
| 3223 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3224 | : LDeferredCode(codegen), instr_(instr) { } |
| 3225 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3226 | virtual LInstruction* instr() { return instr_; } |
| 3227 | private: |
| 3228 | LRandom* instr_; |
| 3229 | }; |
| 3230 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3231 | DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3232 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3233 | // Having marked this instruction as a call we can use any |
| 3234 | // registers. |
| 3235 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3236 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3237 | // Assert that the register size is indeed the size of each seed. |
| 3238 | static const int kSeedSize = sizeof(uint32_t); |
| 3239 | STATIC_ASSERT(kPointerSize == kSeedSize); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3240 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3241 | __ mov(eax, FieldOperand(eax, GlobalObject::kGlobalContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3242 | static const int kRandomSeedOffset = |
| 3243 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3244 | __ mov(ebx, FieldOperand(eax, kRandomSeedOffset)); |
| 3245 | // ebx: FixedArray of the global context's random seeds |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3246 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3247 | // Load state[0]. |
| 3248 | __ mov(ecx, FieldOperand(ebx, ByteArray::kHeaderSize)); |
| 3249 | // If state[0] == 0, call runtime to initialize seeds. |
| 3250 | __ test(ecx, ecx); |
| 3251 | __ j(zero, deferred->entry()); |
| 3252 | // Load state[1]. |
| 3253 | __ mov(eax, FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize)); |
| 3254 | // ecx: state[0] |
| 3255 | // eax: state[1] |
| 3256 | |
| 3257 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3258 | __ movzx_w(edx, ecx); |
| 3259 | __ imul(edx, edx, 18273); |
| 3260 | __ shr(ecx, 16); |
| 3261 | __ add(ecx, edx); |
| 3262 | // Save state[0]. |
| 3263 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize), ecx); |
| 3264 | |
| 3265 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3266 | __ movzx_w(edx, eax); |
| 3267 | __ imul(edx, edx, 36969); |
| 3268 | __ shr(eax, 16); |
| 3269 | __ add(eax, edx); |
| 3270 | // Save state[1]. |
| 3271 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize), eax); |
| 3272 | |
| 3273 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3274 | __ shl(ecx, 14); |
| 3275 | __ and_(eax, Immediate(0x3FFFF)); |
| 3276 | __ add(eax, ecx); |
| 3277 | |
| 3278 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3279 | // Convert 32 random bits in eax to 0.(32 random bits) in a double |
| 3280 | // by computing: |
| 3281 | // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 3282 | __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single. |
| 3283 | __ movd(xmm2, ebx); |
| 3284 | __ movd(xmm1, eax); |
| 3285 | __ cvtss2sd(xmm2, xmm2); |
| 3286 | __ xorps(xmm1, xmm2); |
| 3287 | __ subsd(xmm1, xmm2); |
| 3288 | } |
| 3289 | |
| 3290 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3291 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3292 | __ PrepareCallCFunction(1, ebx); |
| 3293 | __ mov(Operand(esp, 0), eax); |
| 3294 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3295 | // Return value is in eax. |
| 3296 | } |
| 3297 | |
| 3298 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3299 | void LCodeGen::DoMathLog(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3300 | ASSERT(instr->value()->Equals(instr->result())); |
| 3301 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3302 | Label positive, done, zero; |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3303 | __ xorps(xmm0, xmm0); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3304 | __ ucomisd(input_reg, xmm0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3305 | __ j(above, &positive, Label::kNear); |
| 3306 | __ j(equal, &zero, Label::kNear); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 3307 | ExternalReference nan = |
| 3308 | ExternalReference::address_of_canonical_non_hole_nan(); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3309 | __ movdbl(input_reg, Operand::StaticVariable(nan)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3310 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3311 | __ bind(&zero); |
| 3312 | __ push(Immediate(0xFFF00000)); |
| 3313 | __ push(Immediate(0)); |
| 3314 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3315 | __ add(Operand(esp), Immediate(kDoubleSize)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3316 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3317 | __ bind(&positive); |
| 3318 | __ fldln2(); |
| 3319 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 3320 | __ movdbl(Operand(esp, 0), input_reg); |
| 3321 | __ fld_d(Operand(esp, 0)); |
| 3322 | __ fyl2x(); |
| 3323 | __ fstp_d(Operand(esp, 0)); |
| 3324 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3325 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3326 | __ bind(&done); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3327 | } |
| 3328 | |
| 3329 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3330 | void LCodeGen::DoMathTan(LUnaryMathOperation* instr) { |
| 3331 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3332 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3333 | TranscendentalCacheStub::UNTAGGED); |
| 3334 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
| 3335 | } |
| 3336 | |
| 3337 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3338 | void LCodeGen::DoMathCos(LUnaryMathOperation* instr) { |
| 3339 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3340 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3341 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3342 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3343 | } |
| 3344 | |
| 3345 | |
| 3346 | void LCodeGen::DoMathSin(LUnaryMathOperation* instr) { |
| 3347 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3348 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3349 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3350 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3351 | } |
| 3352 | |
| 3353 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3354 | void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) { |
| 3355 | switch (instr->op()) { |
| 3356 | case kMathAbs: |
| 3357 | DoMathAbs(instr); |
| 3358 | break; |
| 3359 | case kMathFloor: |
| 3360 | DoMathFloor(instr); |
| 3361 | break; |
| 3362 | case kMathRound: |
| 3363 | DoMathRound(instr); |
| 3364 | break; |
| 3365 | case kMathSqrt: |
| 3366 | DoMathSqrt(instr); |
| 3367 | break; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3368 | case kMathCos: |
| 3369 | DoMathCos(instr); |
| 3370 | break; |
| 3371 | case kMathSin: |
| 3372 | DoMathSin(instr); |
| 3373 | break; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3374 | case kMathTan: |
| 3375 | DoMathTan(instr); |
| 3376 | break; |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3377 | case kMathLog: |
| 3378 | DoMathLog(instr); |
| 3379 | break; |
| 3380 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3381 | default: |
| 3382 | UNREACHABLE(); |
| 3383 | } |
| 3384 | } |
| 3385 | |
| 3386 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3387 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3388 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3389 | ASSERT(ToRegister(instr->function()).is(edi)); |
| 3390 | ASSERT(instr->HasPointerMap()); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3391 | |
| 3392 | if (instr->known_function().is_null()) { |
| 3393 | LPointerMap* pointers = instr->pointer_map(); |
| 3394 | RecordPosition(pointers->position()); |
| 3395 | SafepointGenerator generator( |
| 3396 | this, pointers, Safepoint::kLazyDeopt); |
| 3397 | ParameterCount count(instr->arity()); |
| 3398 | __ InvokeFunction(edi, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
| 3399 | } else { |
| 3400 | CallKnownFunction(instr->known_function(), |
| 3401 | instr->arity(), |
| 3402 | instr, |
| 3403 | CALL_AS_METHOD, |
| 3404 | EDI_CONTAINS_TARGET); |
| 3405 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3406 | } |
| 3407 | |
| 3408 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3409 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3410 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3411 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3412 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3413 | |
| 3414 | int arity = instr->arity(); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3415 | Handle<Code> ic = |
| 3416 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3417 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3418 | } |
| 3419 | |
| 3420 | |
| 3421 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3422 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3423 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3424 | |
| 3425 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3426 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3427 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3428 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3429 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3430 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3431 | } |
| 3432 | |
| 3433 | |
| 3434 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3435 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3436 | ASSERT(ToRegister(instr->function()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3437 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3438 | |
| 3439 | int arity = instr->arity(); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3440 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3441 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3442 | } |
| 3443 | |
| 3444 | |
| 3445 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3446 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3447 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3448 | |
| 3449 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3450 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 3451 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3452 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3453 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3454 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3455 | } |
| 3456 | |
| 3457 | |
| 3458 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 3459 | ASSERT(ToRegister(instr->result()).is(eax)); |
svenpanne@chromium.org | fb04633 | 2012-04-19 12:02:44 +0000 | [diff] [blame] | 3460 | CallKnownFunction(instr->target(), |
| 3461 | instr->arity(), |
| 3462 | instr, |
| 3463 | CALL_AS_FUNCTION, |
| 3464 | EDI_UNINITIALIZED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3465 | } |
| 3466 | |
| 3467 | |
| 3468 | void LCodeGen::DoCallNew(LCallNew* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3469 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3470 | ASSERT(ToRegister(instr->constructor()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3471 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3472 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3473 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3474 | __ Set(eax, Immediate(instr->arity())); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3475 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3476 | } |
| 3477 | |
| 3478 | |
| 3479 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3480 | CallRuntime(instr->function(), instr->arity(), instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3481 | } |
| 3482 | |
| 3483 | |
| 3484 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
| 3485 | Register object = ToRegister(instr->object()); |
| 3486 | Register value = ToRegister(instr->value()); |
| 3487 | int offset = instr->offset(); |
| 3488 | |
| 3489 | if (!instr->transition().is_null()) { |
verwaest@chromium.org | 3714139 | 2012-05-31 13:27:02 +0000 | [diff] [blame] | 3490 | if (!instr->hydrogen()->NeedsWriteBarrierForMap()) { |
| 3491 | __ mov(FieldOperand(object, HeapObject::kMapOffset), instr->transition()); |
| 3492 | } else { |
| 3493 | Register temp = ToRegister(instr->TempAt(0)); |
| 3494 | Register temp_map = ToRegister(instr->TempAt(1)); |
| 3495 | __ mov(temp_map, instr->transition()); |
| 3496 | __ mov(FieldOperand(object, HeapObject::kMapOffset), temp_map); |
| 3497 | // Update the write barrier for the map field. |
| 3498 | __ RecordWriteField(object, |
| 3499 | HeapObject::kMapOffset, |
| 3500 | temp_map, |
| 3501 | temp, |
| 3502 | kSaveFPRegs, |
| 3503 | OMIT_REMEMBERED_SET, |
| 3504 | OMIT_SMI_CHECK); |
| 3505 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3506 | } |
| 3507 | |
| 3508 | // Do the store. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3509 | HType type = instr->hydrogen()->value()->type(); |
| 3510 | SmiCheck check_needed = |
| 3511 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3512 | if (instr->is_in_object()) { |
| 3513 | __ mov(FieldOperand(object, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3514 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3515 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3516 | // 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] | 3517 | __ RecordWriteField(object, |
| 3518 | offset, |
| 3519 | value, |
| 3520 | temp, |
| 3521 | kSaveFPRegs, |
| 3522 | EMIT_REMEMBERED_SET, |
| 3523 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3524 | } |
| 3525 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3526 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3527 | __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 3528 | __ mov(FieldOperand(temp, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3529 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3530 | // Update the write barrier for the properties array. |
| 3531 | // object is used as a scratch register. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3532 | __ RecordWriteField(temp, |
| 3533 | offset, |
| 3534 | value, |
| 3535 | object, |
| 3536 | kSaveFPRegs, |
| 3537 | EMIT_REMEMBERED_SET, |
| 3538 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3539 | } |
| 3540 | } |
| 3541 | } |
| 3542 | |
| 3543 | |
| 3544 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3545 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3546 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3547 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3548 | |
| 3549 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3550 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3551 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 3552 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3553 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3554 | } |
| 3555 | |
| 3556 | |
| 3557 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3558 | if (instr->index()->IsConstantOperand()) { |
| 3559 | __ cmp(ToOperand(instr->length()), |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 3560 | Immediate(ToInteger32(LConstantOperand::cast(instr->index())))); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3561 | DeoptimizeIf(below_equal, instr->environment()); |
| 3562 | } else { |
| 3563 | __ cmp(ToRegister(instr->index()), ToOperand(instr->length())); |
| 3564 | DeoptimizeIf(above_equal, instr->environment()); |
| 3565 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3566 | } |
| 3567 | |
| 3568 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3569 | void LCodeGen::DoStoreKeyedSpecializedArrayElement( |
| 3570 | LStoreKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3571 | ElementsKind elements_kind = instr->elements_kind(); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3572 | Operand operand(BuildFastArrayOperand(instr->external_pointer(), |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3573 | instr->key(), |
| 3574 | elements_kind, |
| 3575 | 0, |
| 3576 | instr->additional_index())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3577 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3578 | __ cvtsd2ss(xmm0, ToDoubleRegister(instr->value())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3579 | __ movss(operand, xmm0); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3580 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3581 | __ movdbl(operand, ToDoubleRegister(instr->value())); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3582 | } else { |
| 3583 | Register value = ToRegister(instr->value()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3584 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3585 | case EXTERNAL_PIXEL_ELEMENTS: |
| 3586 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3587 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3588 | __ mov_b(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3589 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3590 | case EXTERNAL_SHORT_ELEMENTS: |
| 3591 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3592 | __ mov_w(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3593 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3594 | case EXTERNAL_INT_ELEMENTS: |
| 3595 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3596 | __ mov(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3597 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3598 | case EXTERNAL_FLOAT_ELEMENTS: |
| 3599 | case EXTERNAL_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3600 | case FAST_SMI_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3601 | case FAST_ELEMENTS: |
| 3602 | case FAST_DOUBLE_ELEMENTS: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3603 | case FAST_HOLEY_SMI_ELEMENTS: |
| 3604 | case FAST_HOLEY_ELEMENTS: |
| 3605 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3606 | case DICTIONARY_ELEMENTS: |
| 3607 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3608 | UNREACHABLE(); |
| 3609 | break; |
| 3610 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3611 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3612 | } |
| 3613 | |
| 3614 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3615 | void LCodeGen::DoStoreKeyedFastElement(LStoreKeyedFastElement* instr) { |
| 3616 | Register value = ToRegister(instr->value()); |
| 3617 | Register elements = ToRegister(instr->object()); |
| 3618 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg; |
| 3619 | |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3620 | Operand operand = BuildFastArrayOperand( |
| 3621 | instr->object(), |
| 3622 | instr->key(), |
| 3623 | FAST_ELEMENTS, |
| 3624 | FixedArray::kHeaderSize - kHeapObjectTag, |
| 3625 | instr->additional_index()); |
| 3626 | __ mov(operand, value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3627 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3628 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3629 | ASSERT(!instr->key()->IsConstantOperand()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3630 | HType type = instr->hydrogen()->value()->type(); |
| 3631 | SmiCheck check_needed = |
| 3632 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3633 | // Compute address of modified element and store it into key register. |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3634 | __ lea(key, operand); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3635 | __ RecordWrite(elements, |
| 3636 | key, |
| 3637 | value, |
| 3638 | kSaveFPRegs, |
| 3639 | EMIT_REMEMBERED_SET, |
| 3640 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3641 | } |
| 3642 | } |
| 3643 | |
| 3644 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3645 | void LCodeGen::DoStoreKeyedFastDoubleElement( |
| 3646 | LStoreKeyedFastDoubleElement* instr) { |
| 3647 | XMMRegister value = ToDoubleRegister(instr->value()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3648 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3649 | if (instr->NeedsCanonicalization()) { |
| 3650 | Label have_value; |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3651 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 3652 | __ ucomisd(value, value); |
| 3653 | __ j(parity_odd, &have_value); // NaN. |
| 3654 | |
| 3655 | ExternalReference canonical_nan_reference = |
| 3656 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 3657 | __ movdbl(value, Operand::StaticVariable(canonical_nan_reference)); |
| 3658 | __ bind(&have_value); |
| 3659 | } |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3660 | |
| 3661 | Operand double_store_operand = BuildFastArrayOperand( |
ulan@chromium.org | 0e3f88b | 2012-05-22 09:16:05 +0000 | [diff] [blame] | 3662 | instr->elements(), |
| 3663 | instr->key(), |
| 3664 | FAST_DOUBLE_ELEMENTS, |
| 3665 | FixedDoubleArray::kHeaderSize - kHeapObjectTag, |
| 3666 | instr->additional_index()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3667 | __ movdbl(double_store_operand, value); |
| 3668 | } |
| 3669 | |
| 3670 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3671 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3672 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3673 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3674 | ASSERT(ToRegister(instr->key()).is(ecx)); |
| 3675 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3676 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3677 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3678 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 3679 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3680 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3681 | } |
| 3682 | |
| 3683 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3684 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 3685 | Register object_reg = ToRegister(instr->object()); |
| 3686 | Register new_map_reg = ToRegister(instr->new_map_reg()); |
| 3687 | |
| 3688 | Handle<Map> from_map = instr->original_map(); |
| 3689 | Handle<Map> to_map = instr->transitioned_map(); |
| 3690 | ElementsKind from_kind = from_map->elements_kind(); |
| 3691 | ElementsKind to_kind = to_map->elements_kind(); |
| 3692 | |
| 3693 | Label not_applicable; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3694 | bool is_simple_map_transition = |
| 3695 | IsSimpleMapChangeTransition(from_kind, to_kind); |
| 3696 | Label::Distance branch_distance = |
| 3697 | is_simple_map_transition ? Label::kNear : Label::kFar; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3698 | __ cmp(FieldOperand(object_reg, HeapObject::kMapOffset), from_map); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3699 | __ j(not_equal, ¬_applicable, branch_distance); |
| 3700 | if (is_simple_map_transition) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3701 | Register object_reg = ToRegister(instr->object()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3702 | Handle<Map> map = instr->hydrogen()->transitioned_map(); |
| 3703 | __ mov(FieldOperand(object_reg, HeapObject::kMapOffset), |
| 3704 | Immediate(map)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3705 | // Write barrier. |
| 3706 | ASSERT_NE(instr->temp_reg(), NULL); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3707 | __ RecordWriteForMap(object_reg, to_map, new_map_reg, |
| 3708 | ToRegister(instr->temp_reg()), |
| 3709 | kDontSaveFPRegs); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3710 | } else if (IsFastSmiElementsKind(from_kind) && |
| 3711 | IsFastDoubleElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3712 | __ mov(new_map_reg, to_map); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3713 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3714 | ASSERT(fixed_object_reg.is(edx)); |
| 3715 | ASSERT(new_map_reg.is(ebx)); |
| 3716 | __ mov(fixed_object_reg, object_reg); |
| 3717 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 3718 | RelocInfo::CODE_TARGET, instr); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 3719 | } else if (IsFastDoubleElementsKind(from_kind) && |
| 3720 | IsFastObjectElementsKind(to_kind)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3721 | __ mov(new_map_reg, to_map); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3722 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3723 | ASSERT(fixed_object_reg.is(edx)); |
| 3724 | ASSERT(new_map_reg.is(ebx)); |
| 3725 | __ mov(fixed_object_reg, object_reg); |
| 3726 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 3727 | RelocInfo::CODE_TARGET, instr); |
| 3728 | } else { |
| 3729 | UNREACHABLE(); |
| 3730 | } |
| 3731 | __ bind(¬_applicable); |
| 3732 | } |
| 3733 | |
| 3734 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3735 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3736 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 3737 | public: |
| 3738 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 3739 | : LDeferredCode(codegen), instr_(instr) { } |
| 3740 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3741 | virtual LInstruction* instr() { return instr_; } |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3742 | private: |
| 3743 | LStringCharCodeAt* instr_; |
| 3744 | }; |
| 3745 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3746 | DeferredStringCharCodeAt* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3747 | new(zone()) DeferredStringCharCodeAt(this, instr); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3748 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 3749 | StringCharLoadGenerator::Generate(masm(), |
| 3750 | factory(), |
| 3751 | ToRegister(instr->string()), |
| 3752 | ToRegister(instr->index()), |
| 3753 | ToRegister(instr->result()), |
| 3754 | deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3755 | __ bind(deferred->exit()); |
| 3756 | } |
| 3757 | |
| 3758 | |
| 3759 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3760 | Register string = ToRegister(instr->string()); |
| 3761 | Register result = ToRegister(instr->result()); |
| 3762 | |
| 3763 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3764 | // result register contain a valid pointer because it is already |
| 3765 | // contained in the register pointer map. |
| 3766 | __ Set(result, Immediate(0)); |
| 3767 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3768 | PushSafepointRegistersScope scope(this); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3769 | __ push(string); |
| 3770 | // Push the index as a smi. This is safe because of the checks in |
| 3771 | // DoStringCharCodeAt above. |
| 3772 | STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue); |
| 3773 | if (instr->index()->IsConstantOperand()) { |
| 3774 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 3775 | __ push(Immediate(Smi::FromInt(const_index))); |
| 3776 | } else { |
| 3777 | Register index = ToRegister(instr->index()); |
| 3778 | __ SmiTag(index); |
| 3779 | __ push(index); |
| 3780 | } |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3781 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, |
| 3782 | instr, instr->context()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3783 | if (FLAG_debug_code) { |
| 3784 | __ AbortIfNotSmi(eax); |
| 3785 | } |
| 3786 | __ SmiUntag(eax); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3787 | __ StoreToSafepointRegisterSlot(result, eax); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3788 | } |
| 3789 | |
| 3790 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3791 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 3792 | class DeferredStringCharFromCode: public LDeferredCode { |
| 3793 | public: |
| 3794 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 3795 | : LDeferredCode(codegen), instr_(instr) { } |
| 3796 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3797 | virtual LInstruction* instr() { return instr_; } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3798 | private: |
| 3799 | LStringCharFromCode* instr_; |
| 3800 | }; |
| 3801 | |
| 3802 | DeferredStringCharFromCode* deferred = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3803 | new(zone()) DeferredStringCharFromCode(this, instr); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3804 | |
| 3805 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 3806 | Register char_code = ToRegister(instr->char_code()); |
| 3807 | Register result = ToRegister(instr->result()); |
| 3808 | ASSERT(!char_code.is(result)); |
| 3809 | |
| 3810 | __ cmp(char_code, String::kMaxAsciiCharCode); |
| 3811 | __ j(above, deferred->entry()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3812 | __ Set(result, Immediate(factory()->single_character_string_cache())); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3813 | __ mov(result, FieldOperand(result, |
| 3814 | char_code, times_pointer_size, |
| 3815 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3816 | __ cmp(result, factory()->undefined_value()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3817 | __ j(equal, deferred->entry()); |
| 3818 | __ bind(deferred->exit()); |
| 3819 | } |
| 3820 | |
| 3821 | |
| 3822 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 3823 | Register char_code = ToRegister(instr->char_code()); |
| 3824 | Register result = ToRegister(instr->result()); |
| 3825 | |
| 3826 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3827 | // result register contain a valid pointer because it is already |
| 3828 | // contained in the register pointer map. |
| 3829 | __ Set(result, Immediate(0)); |
| 3830 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3831 | PushSafepointRegistersScope scope(this); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3832 | __ SmiTag(char_code); |
| 3833 | __ push(char_code); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3834 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3835 | __ StoreToSafepointRegisterSlot(result, eax); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3836 | } |
| 3837 | |
| 3838 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3839 | void LCodeGen::DoStringLength(LStringLength* instr) { |
| 3840 | Register string = ToRegister(instr->string()); |
| 3841 | Register result = ToRegister(instr->result()); |
| 3842 | __ mov(result, FieldOperand(string, String::kLengthOffset)); |
| 3843 | } |
| 3844 | |
| 3845 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3846 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3847 | EmitPushTaggedOperand(instr->left()); |
| 3848 | EmitPushTaggedOperand(instr->right()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3849 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3850 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3851 | } |
| 3852 | |
| 3853 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3854 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3855 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3856 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 3857 | LOperand* output = instr->result(); |
| 3858 | ASSERT(output->IsDoubleRegister()); |
| 3859 | __ cvtsi2sd(ToDoubleRegister(output), ToOperand(input)); |
| 3860 | } |
| 3861 | |
| 3862 | |
| 3863 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 3864 | class DeferredNumberTagI: public LDeferredCode { |
| 3865 | public: |
| 3866 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 3867 | : LDeferredCode(codegen), instr_(instr) { } |
| 3868 | virtual void Generate() { codegen()->DoDeferredNumberTagI(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3869 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3870 | private: |
| 3871 | LNumberTagI* instr_; |
| 3872 | }; |
| 3873 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3874 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3875 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3876 | Register reg = ToRegister(input); |
| 3877 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3878 | DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3879 | __ SmiTag(reg); |
| 3880 | __ j(overflow, deferred->entry()); |
| 3881 | __ bind(deferred->exit()); |
| 3882 | } |
| 3883 | |
| 3884 | |
| 3885 | void LCodeGen::DoDeferredNumberTagI(LNumberTagI* instr) { |
| 3886 | Label slow; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3887 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3888 | Register tmp = reg.is(eax) ? ecx : eax; |
| 3889 | |
| 3890 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3891 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3892 | |
| 3893 | // There was overflow, so bits 30 and 31 of the original integer |
| 3894 | // disagree. Try to allocate a heap number in new space and store |
| 3895 | // the value in there. If that fails, call the runtime system. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3896 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3897 | __ SmiUntag(reg); |
| 3898 | __ xor_(reg, 0x80000000); |
| 3899 | __ cvtsi2sd(xmm0, Operand(reg)); |
| 3900 | if (FLAG_inline_new) { |
| 3901 | __ AllocateHeapNumber(reg, tmp, no_reg, &slow); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3902 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3903 | } |
| 3904 | |
| 3905 | // Slow case: Call the runtime system to do the number allocation. |
| 3906 | __ bind(&slow); |
| 3907 | |
| 3908 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 3909 | // register is stored, as this register is in the pointer map, but contains an |
| 3910 | // integer value. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3911 | __ StoreToSafepointRegisterSlot(reg, Immediate(0)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3912 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 3913 | // the environment's HContext or HInlinedContext value. |
| 3914 | // They only call Runtime::kAllocateHeapNumber. |
| 3915 | // The corresponding HChange instructions are added in a phase that does |
| 3916 | // not have easy access to the local context. |
| 3917 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 3918 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
| 3919 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3920 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3921 | if (!reg.is(eax)) __ mov(reg, eax); |
| 3922 | |
| 3923 | // Done. Put the value in xmm0 into the value of the allocated heap |
| 3924 | // number. |
| 3925 | __ bind(&done); |
| 3926 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), xmm0); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3927 | __ StoreToSafepointRegisterSlot(reg, reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3928 | } |
| 3929 | |
| 3930 | |
| 3931 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 3932 | class DeferredNumberTagD: public LDeferredCode { |
| 3933 | public: |
| 3934 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 3935 | : LDeferredCode(codegen), instr_(instr) { } |
| 3936 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3937 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3938 | private: |
| 3939 | LNumberTagD* instr_; |
| 3940 | }; |
| 3941 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3942 | XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3943 | Register reg = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3944 | Register tmp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3945 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3946 | DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3947 | if (FLAG_inline_new) { |
| 3948 | __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); |
| 3949 | } else { |
| 3950 | __ jmp(deferred->entry()); |
| 3951 | } |
| 3952 | __ bind(deferred->exit()); |
| 3953 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); |
| 3954 | } |
| 3955 | |
| 3956 | |
| 3957 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 3958 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3959 | // result register contain a valid pointer because it is already |
| 3960 | // contained in the register pointer map. |
| 3961 | Register reg = ToRegister(instr->result()); |
| 3962 | __ Set(reg, Immediate(0)); |
| 3963 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3964 | PushSafepointRegistersScope scope(this); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3965 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 3966 | // the environment's HContext or HInlinedContext value. |
| 3967 | // They only call Runtime::kAllocateHeapNumber. |
| 3968 | // The corresponding HChange instructions are added in a phase that does |
| 3969 | // not have easy access to the local context. |
| 3970 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 3971 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3972 | RecordSafepointWithRegisters( |
| 3973 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3974 | __ StoreToSafepointRegisterSlot(reg, eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3975 | } |
| 3976 | |
| 3977 | |
| 3978 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3979 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3980 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3981 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
| 3982 | __ SmiTag(ToRegister(input)); |
| 3983 | } |
| 3984 | |
| 3985 | |
| 3986 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3987 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3988 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3989 | if (instr->needs_check()) { |
| 3990 | __ test(ToRegister(input), Immediate(kSmiTagMask)); |
| 3991 | DeoptimizeIf(not_zero, instr->environment()); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 3992 | } else { |
| 3993 | if (FLAG_debug_code) { |
| 3994 | __ AbortIfNotSmi(ToRegister(input)); |
| 3995 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3996 | } |
| 3997 | __ SmiUntag(ToRegister(input)); |
| 3998 | } |
| 3999 | |
| 4000 | |
| 4001 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4002 | Register temp_reg, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4003 | XMMRegister result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4004 | bool deoptimize_on_undefined, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4005 | bool deoptimize_on_minus_zero, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4006 | LEnvironment* env) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4007 | Label load_smi, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4008 | |
| 4009 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4010 | __ JumpIfSmi(input_reg, &load_smi, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4011 | |
| 4012 | // Heap number map check. |
| 4013 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4014 | factory()->heap_number_map()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4015 | if (deoptimize_on_undefined) { |
| 4016 | DeoptimizeIf(not_equal, env); |
| 4017 | } else { |
| 4018 | Label heap_number; |
| 4019 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4020 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4021 | __ cmp(input_reg, factory()->undefined_value()); |
| 4022 | DeoptimizeIf(not_equal, env); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4023 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4024 | // Convert undefined to NaN. |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4025 | ExternalReference nan = |
| 4026 | ExternalReference::address_of_canonical_non_hole_nan(); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4027 | __ movdbl(result_reg, Operand::StaticVariable(nan)); |
| 4028 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4029 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4030 | __ bind(&heap_number); |
| 4031 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4032 | // Heap number to XMM conversion. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4033 | __ movdbl(result_reg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4034 | if (deoptimize_on_minus_zero) { |
| 4035 | XMMRegister xmm_scratch = xmm0; |
| 4036 | __ xorps(xmm_scratch, xmm_scratch); |
| 4037 | __ ucomisd(result_reg, xmm_scratch); |
| 4038 | __ j(not_zero, &done, Label::kNear); |
| 4039 | __ movmskpd(temp_reg, result_reg); |
| 4040 | __ test_b(temp_reg, 1); |
| 4041 | DeoptimizeIf(not_zero, env); |
| 4042 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4043 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4044 | |
| 4045 | // Smi to XMM conversion |
| 4046 | __ bind(&load_smi); |
| 4047 | __ SmiUntag(input_reg); // Untag smi before converting to float. |
| 4048 | __ cvtsi2sd(result_reg, Operand(input_reg)); |
| 4049 | __ SmiTag(input_reg); // Retag smi. |
| 4050 | __ bind(&done); |
| 4051 | } |
| 4052 | |
| 4053 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4054 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4055 | Label done, heap_number; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4056 | Register input_reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4057 | |
| 4058 | // Heap number map check. |
| 4059 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4060 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4061 | |
| 4062 | if (instr->truncating()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4063 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4064 | // Check for undefined. Undefined is converted to zero for truncating |
| 4065 | // conversions. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4066 | __ cmp(input_reg, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4067 | DeoptimizeIf(not_equal, instr->environment()); |
| 4068 | __ mov(input_reg, 0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4069 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4070 | |
| 4071 | __ bind(&heap_number); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4072 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4073 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4074 | Label convert; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4075 | // Use more powerful conversion when sse3 is available. |
| 4076 | // Load x87 register with heap number. |
| 4077 | __ fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4078 | // Get exponent alone and check for too-big exponent. |
| 4079 | __ mov(input_reg, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 4080 | __ and_(input_reg, HeapNumber::kExponentMask); |
| 4081 | const uint32_t kTooBigExponent = |
| 4082 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4083 | __ cmp(Operand(input_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4084 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4085 | // Pop FPU stack before deoptimizing. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4086 | __ fstp(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4087 | DeoptimizeIf(no_condition, instr->environment()); |
| 4088 | |
| 4089 | // Reserve space for 64 bit answer. |
| 4090 | __ bind(&convert); |
| 4091 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4092 | // Do conversion, which cannot fail because we checked the exponent. |
| 4093 | __ fisttp_d(Operand(esp, 0)); |
| 4094 | __ mov(input_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4095 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4096 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4097 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4098 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4099 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4100 | __ cmp(input_reg, 0x80000000u); |
| 4101 | __ j(not_equal, &done); |
| 4102 | // Check if the input was 0x8000000 (kMinInt). |
| 4103 | // If no, then we got an overflow and we deoptimize. |
| 4104 | ExternalReference min_int = ExternalReference::address_of_min_int(); |
| 4105 | __ movdbl(xmm_temp, Operand::StaticVariable(min_int)); |
| 4106 | __ ucomisd(xmm_temp, xmm0); |
| 4107 | DeoptimizeIf(not_equal, instr->environment()); |
| 4108 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4109 | } |
| 4110 | } else { |
| 4111 | // Deoptimize if we don't have a heap number. |
| 4112 | DeoptimizeIf(not_equal, instr->environment()); |
| 4113 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4114 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4115 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4116 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 4117 | __ cvtsi2sd(xmm_temp, Operand(input_reg)); |
| 4118 | __ ucomisd(xmm0, xmm_temp); |
| 4119 | DeoptimizeIf(not_equal, instr->environment()); |
| 4120 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4121 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4122 | __ test(input_reg, Operand(input_reg)); |
| 4123 | __ j(not_zero, &done); |
| 4124 | __ movmskpd(input_reg, xmm0); |
| 4125 | __ and_(input_reg, 1); |
| 4126 | DeoptimizeIf(not_zero, instr->environment()); |
| 4127 | } |
| 4128 | } |
| 4129 | __ bind(&done); |
| 4130 | } |
| 4131 | |
| 4132 | |
| 4133 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4134 | class DeferredTaggedToI: public LDeferredCode { |
| 4135 | public: |
| 4136 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4137 | : LDeferredCode(codegen), instr_(instr) { } |
| 4138 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 4139 | virtual LInstruction* instr() { return instr_; } |
| 4140 | private: |
| 4141 | LTaggedToI* instr_; |
| 4142 | }; |
| 4143 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4144 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4145 | ASSERT(input->IsRegister()); |
| 4146 | ASSERT(input->Equals(instr->result())); |
| 4147 | |
| 4148 | Register input_reg = ToRegister(input); |
| 4149 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 4150 | DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4151 | |
| 4152 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4153 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4154 | |
| 4155 | // Smi to int32 conversion |
| 4156 | __ SmiUntag(input_reg); // Untag smi. |
| 4157 | |
| 4158 | __ bind(deferred->exit()); |
| 4159 | } |
| 4160 | |
| 4161 | |
| 4162 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4163 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4164 | ASSERT(input->IsRegister()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4165 | LOperand* temp = instr->TempAt(0); |
| 4166 | ASSERT(temp == NULL || temp->IsRegister()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4167 | LOperand* result = instr->result(); |
| 4168 | ASSERT(result->IsDoubleRegister()); |
| 4169 | |
| 4170 | Register input_reg = ToRegister(input); |
| 4171 | XMMRegister result_reg = ToDoubleRegister(result); |
| 4172 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4173 | bool deoptimize_on_minus_zero = |
| 4174 | instr->hydrogen()->deoptimize_on_minus_zero(); |
| 4175 | Register temp_reg = deoptimize_on_minus_zero ? ToRegister(temp) : no_reg; |
| 4176 | |
| 4177 | EmitNumberUntagD(input_reg, |
| 4178 | temp_reg, |
| 4179 | result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4180 | instr->hydrogen()->deoptimize_on_undefined(), |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4181 | deoptimize_on_minus_zero, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4182 | instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4183 | } |
| 4184 | |
| 4185 | |
| 4186 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4187 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4188 | ASSERT(input->IsDoubleRegister()); |
| 4189 | LOperand* result = instr->result(); |
| 4190 | ASSERT(result->IsRegister()); |
| 4191 | |
| 4192 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4193 | Register result_reg = ToRegister(result); |
| 4194 | |
| 4195 | if (instr->truncating()) { |
| 4196 | // Performs a truncating conversion of a floating point number as used by |
| 4197 | // the JS bitwise operations. |
| 4198 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4199 | __ cmp(result_reg, 0x80000000u); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4200 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4201 | // This will deoptimize if the exponent of the input in out of range. |
| 4202 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4203 | Label convert, done; |
| 4204 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4205 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4206 | __ movdbl(Operand(esp, 0), input_reg); |
| 4207 | // Get exponent alone and check for too-big exponent. |
| 4208 | __ mov(result_reg, Operand(esp, sizeof(int32_t))); |
| 4209 | __ and_(result_reg, HeapNumber::kExponentMask); |
| 4210 | const uint32_t kTooBigExponent = |
| 4211 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4212 | __ cmp(Operand(result_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4213 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4214 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4215 | DeoptimizeIf(no_condition, instr->environment()); |
| 4216 | __ bind(&convert); |
| 4217 | // Do conversion, which cannot fail because we checked the exponent. |
| 4218 | __ fld_d(Operand(esp, 0)); |
| 4219 | __ fisttp_d(Operand(esp, 0)); |
| 4220 | __ mov(result_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4221 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4222 | __ bind(&done); |
| 4223 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4224 | Label done; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4225 | Register temp_reg = ToRegister(instr->TempAt(0)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4226 | XMMRegister xmm_scratch = xmm0; |
| 4227 | |
| 4228 | // If cvttsd2si succeeded, we're done. Otherwise, we attempt |
| 4229 | // manual conversion. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4230 | __ j(not_equal, &done, Label::kNear); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4231 | |
| 4232 | // Get high 32 bits of the input in result_reg and temp_reg. |
| 4233 | __ pshufd(xmm_scratch, input_reg, 1); |
| 4234 | __ movd(Operand(temp_reg), xmm_scratch); |
| 4235 | __ mov(result_reg, temp_reg); |
| 4236 | |
| 4237 | // Prepare negation mask in temp_reg. |
| 4238 | __ sar(temp_reg, kBitsPerInt - 1); |
| 4239 | |
| 4240 | // Extract the exponent from result_reg and subtract adjusted |
| 4241 | // bias from it. The adjustment is selected in a way such that |
| 4242 | // when the difference is zero, the answer is in the low 32 bits |
| 4243 | // of the input, otherwise a shift has to be performed. |
| 4244 | __ shr(result_reg, HeapNumber::kExponentShift); |
| 4245 | __ and_(result_reg, |
| 4246 | HeapNumber::kExponentMask >> HeapNumber::kExponentShift); |
| 4247 | __ sub(Operand(result_reg), |
| 4248 | Immediate(HeapNumber::kExponentBias + |
| 4249 | HeapNumber::kExponentBits + |
| 4250 | HeapNumber::kMantissaBits)); |
| 4251 | // Don't handle big (> kMantissaBits + kExponentBits == 63) or |
| 4252 | // special exponents. |
| 4253 | DeoptimizeIf(greater, instr->environment()); |
| 4254 | |
| 4255 | // Zero out the sign and the exponent in the input (by shifting |
| 4256 | // it to the left) and restore the implicit mantissa bit, |
| 4257 | // i.e. convert the input to unsigned int64 shifted left by |
| 4258 | // kExponentBits. |
| 4259 | ExternalReference minus_zero = ExternalReference::address_of_minus_zero(); |
| 4260 | // Minus zero has the most significant bit set and the other |
| 4261 | // bits cleared. |
| 4262 | __ movdbl(xmm_scratch, Operand::StaticVariable(minus_zero)); |
| 4263 | __ psllq(input_reg, HeapNumber::kExponentBits); |
| 4264 | __ por(input_reg, xmm_scratch); |
| 4265 | |
| 4266 | // Get the amount to shift the input right in xmm_scratch. |
| 4267 | __ neg(result_reg); |
| 4268 | __ movd(xmm_scratch, Operand(result_reg)); |
| 4269 | |
| 4270 | // Shift the input right and extract low 32 bits. |
| 4271 | __ psrlq(input_reg, xmm_scratch); |
| 4272 | __ movd(Operand(result_reg), input_reg); |
| 4273 | |
| 4274 | // Use the prepared mask in temp_reg to negate the result if necessary. |
| 4275 | __ xor_(result_reg, Operand(temp_reg)); |
| 4276 | __ sub(result_reg, Operand(temp_reg)); |
| 4277 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4278 | } |
| 4279 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4280 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4281 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4282 | __ cvtsi2sd(xmm0, Operand(result_reg)); |
| 4283 | __ ucomisd(xmm0, input_reg); |
| 4284 | DeoptimizeIf(not_equal, instr->environment()); |
| 4285 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4286 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4287 | // The integer converted back is equal to the original. We |
| 4288 | // only have to test if we got -0 as an input. |
| 4289 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4290 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4291 | __ movmskpd(result_reg, input_reg); |
| 4292 | // Bit 0 contains the sign of the double in input_reg. |
| 4293 | // If input was positive, we are ok and return 0, otherwise |
| 4294 | // deoptimize. |
| 4295 | __ and_(result_reg, 1); |
| 4296 | DeoptimizeIf(not_zero, instr->environment()); |
| 4297 | } |
| 4298 | __ bind(&done); |
| 4299 | } |
| 4300 | } |
| 4301 | |
| 4302 | |
| 4303 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4304 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4305 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4306 | DeoptimizeIf(not_zero, instr->environment()); |
| 4307 | } |
| 4308 | |
| 4309 | |
| 4310 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
| 4311 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4312 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4313 | DeoptimizeIf(zero, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4314 | } |
| 4315 | |
| 4316 | |
| 4317 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4318 | Register input = ToRegister(instr->InputAt(0)); |
| 4319 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4320 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4321 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4322 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4323 | if (instr->hydrogen()->is_interval_check()) { |
| 4324 | InstanceType first; |
| 4325 | InstanceType last; |
| 4326 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4327 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4328 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4329 | static_cast<int8_t>(first)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4330 | |
| 4331 | // If there is only one type in the interval check for equality. |
| 4332 | if (first == last) { |
| 4333 | DeoptimizeIf(not_equal, instr->environment()); |
| 4334 | } else { |
| 4335 | DeoptimizeIf(below, instr->environment()); |
| 4336 | // Omit check for the last type. |
| 4337 | if (last != LAST_TYPE) { |
| 4338 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4339 | static_cast<int8_t>(last)); |
| 4340 | DeoptimizeIf(above, instr->environment()); |
| 4341 | } |
| 4342 | } |
| 4343 | } else { |
| 4344 | uint8_t mask; |
| 4345 | uint8_t tag; |
| 4346 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4347 | |
| 4348 | if (IsPowerOf2(mask)) { |
| 4349 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 4350 | __ test_b(FieldOperand(temp, Map::kInstanceTypeOffset), mask); |
| 4351 | DeoptimizeIf(tag == 0 ? not_zero : zero, instr->environment()); |
| 4352 | } else { |
| 4353 | __ movzx_b(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 4354 | __ and_(temp, mask); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 4355 | __ cmp(temp, tag); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4356 | DeoptimizeIf(not_equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4357 | } |
| 4358 | } |
| 4359 | } |
| 4360 | |
| 4361 | |
| 4362 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4363 | Handle<JSFunction> target = instr->hydrogen()->target(); |
| 4364 | if (isolate()->heap()->InNewSpace(*target)) { |
| 4365 | Register reg = ToRegister(instr->value()); |
| 4366 | Handle<JSGlobalPropertyCell> cell = |
| 4367 | isolate()->factory()->NewJSGlobalPropertyCell(target); |
| 4368 | __ cmp(reg, Operand::Cell(cell)); |
| 4369 | } else { |
| 4370 | Operand operand = ToOperand(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4371 | __ cmp(operand, target); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4372 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4373 | DeoptimizeIf(not_equal, instr->environment()); |
| 4374 | } |
| 4375 | |
| 4376 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4377 | void LCodeGen::DoCheckMapCommon(Register reg, |
| 4378 | Handle<Map> map, |
| 4379 | CompareMapMode mode, |
| 4380 | LEnvironment* env) { |
| 4381 | Label success; |
| 4382 | __ CompareMap(reg, map, &success, mode); |
| 4383 | DeoptimizeIf(not_equal, env); |
| 4384 | __ bind(&success); |
| 4385 | } |
| 4386 | |
| 4387 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4388 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4389 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4390 | ASSERT(input->IsRegister()); |
| 4391 | Register reg = ToRegister(input); |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4392 | |
| 4393 | Label success; |
| 4394 | SmallMapList* map_set = instr->hydrogen()->map_set(); |
| 4395 | for (int i = 0; i < map_set->length() - 1; i++) { |
| 4396 | Handle<Map> map = map_set->at(i); |
| 4397 | __ CompareMap(reg, map, &success, REQUIRE_EXACT_MAP); |
| 4398 | __ j(equal, &success); |
| 4399 | } |
| 4400 | Handle<Map> map = map_set->last(); |
| 4401 | DoCheckMapCommon(reg, map, REQUIRE_EXACT_MAP, instr->environment()); |
| 4402 | __ bind(&success); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4403 | } |
| 4404 | |
| 4405 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4406 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 4407 | XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 4408 | Register result_reg = ToRegister(instr->result()); |
| 4409 | __ ClampDoubleToUint8(value_reg, xmm0, result_reg); |
| 4410 | } |
| 4411 | |
| 4412 | |
| 4413 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 4414 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4415 | Register value_reg = ToRegister(instr->result()); |
| 4416 | __ ClampUint8(value_reg); |
| 4417 | } |
| 4418 | |
| 4419 | |
| 4420 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 4421 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4422 | Register input_reg = ToRegister(instr->unclamped()); |
| 4423 | Label is_smi, done, heap_number; |
| 4424 | |
| 4425 | __ JumpIfSmi(input_reg, &is_smi); |
| 4426 | |
| 4427 | // Check for heap number |
| 4428 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4429 | factory()->heap_number_map()); |
| 4430 | __ j(equal, &heap_number, Label::kNear); |
| 4431 | |
| 4432 | // Check for undefined. Undefined is converted to zero for clamping |
| 4433 | // conversions. |
| 4434 | __ cmp(input_reg, factory()->undefined_value()); |
| 4435 | DeoptimizeIf(not_equal, instr->environment()); |
| 4436 | __ mov(input_reg, 0); |
| 4437 | __ jmp(&done, Label::kNear); |
| 4438 | |
| 4439 | // Heap number |
| 4440 | __ bind(&heap_number); |
| 4441 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4442 | __ ClampDoubleToUint8(xmm0, xmm1, input_reg); |
| 4443 | __ jmp(&done, Label::kNear); |
| 4444 | |
| 4445 | // smi |
| 4446 | __ bind(&is_smi); |
| 4447 | __ SmiUntag(input_reg); |
| 4448 | __ ClampUint8(input_reg); |
| 4449 | |
| 4450 | __ bind(&done); |
| 4451 | } |
| 4452 | |
| 4453 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4454 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4455 | Register reg = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4456 | |
| 4457 | Handle<JSObject> holder = instr->holder(); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4458 | Handle<JSObject> current_prototype = instr->prototype(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4459 | |
| 4460 | // Load prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4461 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4462 | |
| 4463 | // Check prototype maps up to the holder. |
| 4464 | while (!current_prototype.is_identical_to(holder)) { |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4465 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4466 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
| 4467 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4468 | current_prototype = |
| 4469 | Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype())); |
| 4470 | // Load next prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4471 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4472 | } |
| 4473 | |
| 4474 | // Check the holder map. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4475 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4476 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4477 | } |
| 4478 | |
| 4479 | |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4480 | void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
| 4481 | class DeferredAllocateObject: public LDeferredCode { |
| 4482 | public: |
| 4483 | DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
| 4484 | : LDeferredCode(codegen), instr_(instr) { } |
| 4485 | virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
| 4486 | virtual LInstruction* instr() { return instr_; } |
| 4487 | private: |
| 4488 | LAllocateObject* instr_; |
| 4489 | }; |
| 4490 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 4491 | DeferredAllocateObject* deferred = |
| 4492 | new(zone()) DeferredAllocateObject(this, instr); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4493 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4494 | Register result = ToRegister(instr->result()); |
| 4495 | Register scratch = ToRegister(instr->TempAt(0)); |
| 4496 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
| 4497 | Handle<Map> initial_map(constructor->initial_map()); |
| 4498 | int instance_size = initial_map->instance_size(); |
| 4499 | ASSERT(initial_map->pre_allocated_property_fields() + |
| 4500 | initial_map->unused_property_fields() - |
| 4501 | initial_map->inobject_properties() == 0); |
| 4502 | |
| 4503 | // Allocate memory for the object. The initial map might change when |
| 4504 | // the constructor's prototype changes, but instance size and property |
| 4505 | // counts remain unchanged (if slack tracking finished). |
| 4506 | ASSERT(!constructor->shared()->IsInobjectSlackTrackingInProgress()); |
| 4507 | __ AllocateInNewSpace(instance_size, |
| 4508 | result, |
| 4509 | no_reg, |
| 4510 | scratch, |
| 4511 | deferred->entry(), |
| 4512 | TAG_OBJECT); |
| 4513 | |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4514 | __ bind(deferred->exit()); |
| 4515 | if (FLAG_debug_code) { |
| 4516 | Label is_in_new_space; |
| 4517 | __ JumpIfInNewSpace(result, scratch, &is_in_new_space); |
| 4518 | __ Abort("Allocated object is not in new-space"); |
| 4519 | __ bind(&is_in_new_space); |
| 4520 | } |
| 4521 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4522 | // Load the initial map. |
| 4523 | Register map = scratch; |
| 4524 | __ LoadHeapObject(scratch, constructor); |
| 4525 | __ mov(map, FieldOperand(scratch, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4526 | |
| 4527 | if (FLAG_debug_code) { |
| 4528 | __ AbortIfSmi(map); |
| 4529 | __ cmpb(FieldOperand(map, Map::kInstanceSizeOffset), |
| 4530 | instance_size >> kPointerSizeLog2); |
| 4531 | __ Assert(equal, "Unexpected instance size"); |
| 4532 | __ cmpb(FieldOperand(map, Map::kPreAllocatedPropertyFieldsOffset), |
| 4533 | initial_map->pre_allocated_property_fields()); |
| 4534 | __ Assert(equal, "Unexpected pre-allocated property fields count"); |
| 4535 | __ cmpb(FieldOperand(map, Map::kUnusedPropertyFieldsOffset), |
| 4536 | initial_map->unused_property_fields()); |
| 4537 | __ Assert(equal, "Unexpected unused property fields count"); |
| 4538 | __ cmpb(FieldOperand(map, Map::kInObjectPropertiesOffset), |
| 4539 | initial_map->inobject_properties()); |
| 4540 | __ Assert(equal, "Unexpected in-object property fields count"); |
| 4541 | } |
| 4542 | |
| 4543 | // Initialize map and fields of the newly allocated object. |
| 4544 | ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE); |
| 4545 | __ mov(FieldOperand(result, JSObject::kMapOffset), map); |
| 4546 | __ mov(scratch, factory()->empty_fixed_array()); |
| 4547 | __ mov(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 4548 | __ mov(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 4549 | if (initial_map->inobject_properties() != 0) { |
| 4550 | __ mov(scratch, factory()->undefined_value()); |
| 4551 | for (int i = 0; i < initial_map->inobject_properties(); i++) { |
| 4552 | int property_offset = JSObject::kHeaderSize + i * kPointerSize; |
| 4553 | __ mov(FieldOperand(result, property_offset), scratch); |
| 4554 | } |
| 4555 | } |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4556 | } |
| 4557 | |
| 4558 | |
| 4559 | void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) { |
| 4560 | Register result = ToRegister(instr->result()); |
| 4561 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4562 | Handle<Map> initial_map(constructor->initial_map()); |
| 4563 | int instance_size = initial_map->instance_size(); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4564 | |
| 4565 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4566 | // result register contain a valid pointer because it is already |
| 4567 | // contained in the register pointer map. |
| 4568 | __ Set(result, Immediate(0)); |
| 4569 | |
| 4570 | PushSafepointRegistersScope scope(this); |
fschneider@chromium.org | 7d10be5 | 2012-04-10 12:30:14 +0000 | [diff] [blame] | 4571 | __ push(Immediate(Smi::FromInt(instance_size))); |
| 4572 | CallRuntimeFromDeferred( |
| 4573 | Runtime::kAllocateInNewSpace, 1, instr, instr->context()); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4574 | __ StoreToSafepointRegisterSlot(result, eax); |
| 4575 | } |
| 4576 | |
| 4577 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4578 | void LCodeGen::DoArrayLiteral(LArrayLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4579 | ASSERT(ToRegister(instr->context()).is(esi)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4580 | Heap* heap = isolate()->heap(); |
| 4581 | ElementsKind boilerplate_elements_kind = |
| 4582 | instr->hydrogen()->boilerplate_elements_kind(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4583 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4584 | // Deopt if the array literal boilerplate ElementsKind is of a type different |
| 4585 | // 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] | 4586 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 4587 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 4588 | boilerplate_elements_kind, true)) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4589 | __ LoadHeapObject(eax, instr->hydrogen()->boilerplate_object()); |
| 4590 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 4591 | // Load the map's "bit field 2". We only need the first byte, |
| 4592 | // but the following masking takes care of that anyway. |
| 4593 | __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset)); |
| 4594 | // Retrieve elements_kind from bit field 2. |
| 4595 | __ and_(ebx, Map::kElementsKindMask); |
| 4596 | __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 4597 | DeoptimizeIf(not_equal, instr->environment()); |
| 4598 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4599 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4600 | // Set up the parameters to the stub/runtime call. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4601 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4602 | __ push(FieldOperand(eax, JSFunction::kLiteralsOffset)); |
| 4603 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4604 | // Boilerplate already exists, constant elements are never accessed. |
| 4605 | // Pass an empty fixed array. |
| 4606 | __ push(Immediate(Handle<FixedArray>(heap->empty_fixed_array()))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4607 | |
| 4608 | // Pick the right runtime function or stub to call. |
| 4609 | int length = instr->hydrogen()->length(); |
| 4610 | if (instr->hydrogen()->IsCopyOnWrite()) { |
| 4611 | ASSERT(instr->hydrogen()->depth() == 1); |
| 4612 | FastCloneShallowArrayStub::Mode mode = |
| 4613 | FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS; |
| 4614 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4615 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4616 | } else if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4617 | CallRuntime(Runtime::kCreateArrayLiteral, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4618 | } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4619 | CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4620 | } else { |
| 4621 | FastCloneShallowArrayStub::Mode mode = |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4622 | boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS |
| 4623 | ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS |
| 4624 | : FastCloneShallowArrayStub::CLONE_ELEMENTS; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4625 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4626 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4627 | } |
| 4628 | } |
| 4629 | |
| 4630 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4631 | void LCodeGen::EmitDeepCopy(Handle<JSObject> object, |
| 4632 | Register result, |
| 4633 | Register source, |
| 4634 | int* offset) { |
| 4635 | ASSERT(!source.is(ecx)); |
| 4636 | ASSERT(!result.is(ecx)); |
| 4637 | |
| 4638 | if (FLAG_debug_code) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4639 | __ LoadHeapObject(ecx, object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4640 | __ cmp(source, ecx); |
| 4641 | __ Assert(equal, "Unexpected object literal boilerplate"); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 4642 | __ mov(ecx, FieldOperand(source, HeapObject::kMapOffset)); |
| 4643 | __ cmp(ecx, Handle<Map>(object->map())); |
| 4644 | __ Assert(equal, "Unexpected boilerplate map"); |
| 4645 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 4646 | __ and_(ecx, Map::kElementsKindMask); |
| 4647 | __ cmp(ecx, object->GetElementsKind() << Map::kElementsKindShift); |
| 4648 | __ Assert(equal, "Unexpected boilerplate elements kind"); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4649 | } |
| 4650 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4651 | // Only elements backing stores for non-COW arrays need to be copied. |
| 4652 | Handle<FixedArrayBase> elements(object->elements()); |
| 4653 | bool has_elements = elements->length() > 0 && |
| 4654 | elements->map() != isolate()->heap()->fixed_cow_array_map(); |
| 4655 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4656 | // Increase the offset so that subsequent objects end up right after |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4657 | // this object and its backing store. |
| 4658 | int object_offset = *offset; |
| 4659 | int object_size = object->map()->instance_size(); |
| 4660 | int elements_offset = *offset + object_size; |
| 4661 | int elements_size = has_elements ? elements->Size() : 0; |
| 4662 | *offset += object_size + elements_size; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4663 | |
| 4664 | // Copy object header. |
| 4665 | ASSERT(object->properties()->length() == 0); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4666 | int inobject_properties = object->map()->inobject_properties(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4667 | int header_size = object_size - inobject_properties * kPointerSize; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4668 | for (int i = 0; i < header_size; i += kPointerSize) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4669 | if (has_elements && i == JSObject::kElementsOffset) { |
| 4670 | __ lea(ecx, Operand(result, elements_offset)); |
| 4671 | } else { |
| 4672 | __ mov(ecx, FieldOperand(source, i)); |
| 4673 | } |
| 4674 | __ mov(FieldOperand(result, object_offset + i), ecx); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4675 | } |
| 4676 | |
| 4677 | // Copy in-object properties. |
| 4678 | for (int i = 0; i < inobject_properties; i++) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4679 | int total_offset = object_offset + object->GetInObjectPropertyOffset(i); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4680 | Handle<Object> value = Handle<Object>(object->InObjectPropertyAt(i)); |
| 4681 | if (value->IsJSObject()) { |
| 4682 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4683 | __ lea(ecx, Operand(result, *offset)); |
| 4684 | __ mov(FieldOperand(result, total_offset), ecx); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4685 | __ LoadHeapObject(source, value_object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4686 | EmitDeepCopy(value_object, result, source, offset); |
| 4687 | } else if (value->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4688 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4689 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4690 | } else { |
| 4691 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4692 | } |
| 4693 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4694 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4695 | if (has_elements) { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4696 | // Copy elements backing store header. |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4697 | __ LoadHeapObject(source, elements); |
| 4698 | for (int i = 0; i < FixedArray::kHeaderSize; i += kPointerSize) { |
| 4699 | __ mov(ecx, FieldOperand(source, i)); |
| 4700 | __ mov(FieldOperand(result, elements_offset + i), ecx); |
| 4701 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4702 | |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4703 | // Copy elements backing store content. |
| 4704 | int elements_length = elements->length(); |
| 4705 | if (elements->IsFixedDoubleArray()) { |
| 4706 | Handle<FixedDoubleArray> double_array = |
| 4707 | Handle<FixedDoubleArray>::cast(elements); |
| 4708 | for (int i = 0; i < elements_length; i++) { |
| 4709 | int64_t value = double_array->get_representation(i); |
| 4710 | int32_t value_low = value & 0xFFFFFFFF; |
| 4711 | int32_t value_high = value >> 32; |
| 4712 | int total_offset = |
| 4713 | elements_offset + FixedDoubleArray::OffsetOfElementAt(i); |
| 4714 | __ mov(FieldOperand(result, total_offset), Immediate(value_low)); |
| 4715 | __ mov(FieldOperand(result, total_offset + 4), Immediate(value_high)); |
| 4716 | } |
| 4717 | } else if (elements->IsFixedArray()) { |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 4718 | Handle<FixedArray> fast_elements = Handle<FixedArray>::cast(elements); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4719 | for (int i = 0; i < elements_length; i++) { |
| 4720 | int total_offset = elements_offset + FixedArray::OffsetOfElementAt(i); |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 4721 | Handle<Object> value(fast_elements->get(i)); |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4722 | if (value->IsJSObject()) { |
| 4723 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4724 | __ lea(ecx, Operand(result, *offset)); |
| 4725 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4726 | __ LoadHeapObject(source, value_object); |
| 4727 | EmitDeepCopy(value_object, result, source, offset); |
| 4728 | } else if (value->IsHeapObject()) { |
| 4729 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
| 4730 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4731 | } else { |
| 4732 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4733 | } |
| 4734 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4735 | } else { |
danno@chromium.org | 88aa058 | 2012-03-23 15:11:57 +0000 | [diff] [blame] | 4736 | UNREACHABLE(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4737 | } |
| 4738 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4739 | } |
| 4740 | |
| 4741 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4742 | void LCodeGen::DoFastLiteral(LFastLiteral* instr) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4743 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 4744 | int size = instr->hydrogen()->total_size(); |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 4745 | ElementsKind boilerplate_elements_kind = |
| 4746 | instr->hydrogen()->boilerplate()->GetElementsKind(); |
| 4747 | |
| 4748 | // Deopt if the literal boilerplate ElementsKind is of a type different than |
| 4749 | // 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] | 4750 | // already been converted to TERMINAL_FAST_ELEMENTS_KIND. |
| 4751 | if (CanTransitionToMoreGeneralFastElementsKind( |
| 4752 | boilerplate_elements_kind, true)) { |
danno@chromium.org | 2c26cb1 | 2012-05-03 09:06:43 +0000 | [diff] [blame] | 4753 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
| 4754 | __ mov(ecx, FieldOperand(ebx, HeapObject::kMapOffset)); |
| 4755 | // Load the map's "bit field 2". We only need the first byte, |
| 4756 | // but the following masking takes care of that anyway. |
| 4757 | __ mov(ecx, FieldOperand(ecx, Map::kBitField2Offset)); |
| 4758 | // Retrieve elements_kind from bit field 2. |
| 4759 | __ and_(ecx, Map::kElementsKindMask); |
| 4760 | __ cmp(ecx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 4761 | DeoptimizeIf(not_equal, instr->environment()); |
| 4762 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4763 | |
| 4764 | // Allocate all objects that are part of the literal in one big |
| 4765 | // allocation. This avoids multiple limit checks. |
| 4766 | Label allocated, runtime_allocate; |
| 4767 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 4768 | __ jmp(&allocated); |
| 4769 | |
| 4770 | __ bind(&runtime_allocate); |
| 4771 | __ push(Immediate(Smi::FromInt(size))); |
| 4772 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 4773 | |
| 4774 | __ bind(&allocated); |
| 4775 | int offset = 0; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4776 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4777 | EmitDeepCopy(instr->hydrogen()->boilerplate(), eax, ebx, &offset); |
| 4778 | ASSERT_EQ(size, offset); |
| 4779 | } |
| 4780 | |
| 4781 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4782 | void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 4783 | ASSERT(ToRegister(instr->context()).is(esi)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4784 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4785 | Handle<FixedArray> constant_properties = |
| 4786 | instr->hydrogen()->constant_properties(); |
| 4787 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4788 | // Set up the parameters to the stub/runtime call. |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4789 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4790 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4791 | __ push(Immediate(constant_properties)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4792 | int flags = instr->hydrogen()->fast_elements() |
| 4793 | ? ObjectLiteral::kFastElements |
| 4794 | : ObjectLiteral::kNoFlags; |
| 4795 | flags |= instr->hydrogen()->has_function() |
| 4796 | ? ObjectLiteral::kHasFunction |
| 4797 | : ObjectLiteral::kNoFlags; |
| 4798 | __ push(Immediate(Smi::FromInt(flags))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4799 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4800 | // Pick the right runtime function or stub to call. |
| 4801 | int properties_count = constant_properties->length() / 2; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4802 | if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4803 | CallRuntime(Runtime::kCreateObjectLiteral, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4804 | } else if (flags != ObjectLiteral::kFastElements || |
| 4805 | properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4806 | CallRuntime(Runtime::kCreateObjectLiteralShallow, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4807 | } else { |
| 4808 | FastCloneShallowObjectStub stub(properties_count); |
| 4809 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4810 | } |
| 4811 | } |
| 4812 | |
| 4813 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4814 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
| 4815 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 4816 | __ push(eax); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4817 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4818 | } |
| 4819 | |
| 4820 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4821 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4822 | ASSERT(ToRegister(instr->context()).is(esi)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4823 | Label materialized; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4824 | // Registers will be used as follows: |
| 4825 | // edi = JS function. |
| 4826 | // ecx = literals array. |
| 4827 | // ebx = regexp literal. |
| 4828 | // eax = regexp literal clone. |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4829 | // esi = context. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4830 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4831 | __ mov(ecx, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
| 4832 | int literal_offset = FixedArray::kHeaderSize + |
| 4833 | instr->hydrogen()->literal_index() * kPointerSize; |
| 4834 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4835 | __ cmp(ebx, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4836 | __ j(not_equal, &materialized, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4837 | |
| 4838 | // Create regexp literal using runtime function |
| 4839 | // Result will be in eax. |
| 4840 | __ push(ecx); |
| 4841 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 4842 | __ push(Immediate(instr->hydrogen()->pattern())); |
| 4843 | __ push(Immediate(instr->hydrogen()->flags())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4844 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4845 | __ mov(ebx, eax); |
| 4846 | |
| 4847 | __ bind(&materialized); |
| 4848 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 4849 | Label allocated, runtime_allocate; |
| 4850 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 4851 | __ jmp(&allocated); |
| 4852 | |
| 4853 | __ bind(&runtime_allocate); |
| 4854 | __ push(ebx); |
| 4855 | __ push(Immediate(Smi::FromInt(size))); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4856 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4857 | __ pop(ebx); |
| 4858 | |
| 4859 | __ bind(&allocated); |
| 4860 | // Copy the content into the newly allocated memory. |
| 4861 | // (Unroll copy loop once for better throughput). |
| 4862 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 4863 | __ mov(edx, FieldOperand(ebx, i)); |
| 4864 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 4865 | __ mov(FieldOperand(eax, i), edx); |
| 4866 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 4867 | } |
| 4868 | if ((size % (2 * kPointerSize)) != 0) { |
| 4869 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 4870 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 4871 | } |
| 4872 | } |
| 4873 | |
| 4874 | |
| 4875 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4876 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4877 | // Use the fast case closure allocation code that allocates in new |
| 4878 | // space for nested functions that don't need literals cloning. |
| 4879 | Handle<SharedFunctionInfo> shared_info = instr->shared_info(); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 4880 | bool pretenure = instr->hydrogen()->pretenure(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4881 | if (!pretenure && shared_info->num_literals() == 0) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4882 | FastNewClosureStub stub(shared_info->language_mode()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4883 | __ push(Immediate(shared_info)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4884 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4885 | } else { |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 4886 | __ push(esi); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4887 | __ push(Immediate(shared_info)); |
| 4888 | __ push(Immediate(pretenure |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4889 | ? factory()->true_value() |
| 4890 | : factory()->false_value())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4891 | CallRuntime(Runtime::kNewClosure, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4892 | } |
| 4893 | } |
| 4894 | |
| 4895 | |
| 4896 | void LCodeGen::DoTypeof(LTypeof* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4897 | LOperand* input = instr->InputAt(1); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4898 | EmitPushTaggedOperand(input); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4899 | CallRuntime(Runtime::kTypeof, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4900 | } |
| 4901 | |
| 4902 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4903 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4904 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4905 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 4906 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 4907 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 4908 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 4909 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4910 | Condition final_branch_condition = |
| 4911 | EmitTypeofIs(true_label, false_label, input, instr->type_literal()); |
| 4912 | if (final_branch_condition != no_condition) { |
| 4913 | EmitBranch(true_block, false_block, final_branch_condition); |
| 4914 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4915 | } |
| 4916 | |
| 4917 | |
| 4918 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 4919 | Label* false_label, |
| 4920 | Register input, |
| 4921 | Handle<String> type_name) { |
| 4922 | Condition final_branch_condition = no_condition; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4923 | if (type_name->Equals(heap()->number_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4924 | __ JumpIfSmi(input, true_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4925 | __ cmp(FieldOperand(input, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4926 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4927 | final_branch_condition = equal; |
| 4928 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4929 | } else if (type_name->Equals(heap()->string_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4930 | __ JumpIfSmi(input, false_label); |
| 4931 | __ CmpObjectType(input, FIRST_NONSTRING_TYPE, input); |
| 4932 | __ j(above_equal, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4933 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4934 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4935 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4936 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4937 | } else if (type_name->Equals(heap()->boolean_symbol())) { |
| 4938 | __ cmp(input, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4939 | __ j(equal, true_label); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4940 | __ cmp(input, factory()->false_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4941 | final_branch_condition = equal; |
| 4942 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 4943 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_symbol())) { |
| 4944 | __ cmp(input, factory()->null_value()); |
| 4945 | final_branch_condition = equal; |
| 4946 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4947 | } else if (type_name->Equals(heap()->undefined_symbol())) { |
| 4948 | __ cmp(input, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4949 | __ j(equal, true_label); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4950 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4951 | // Check for undetectable objects => true. |
| 4952 | __ mov(input, FieldOperand(input, HeapObject::kMapOffset)); |
| 4953 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4954 | 1 << Map::kIsUndetectable); |
| 4955 | final_branch_condition = not_zero; |
| 4956 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4957 | } else if (type_name->Equals(heap()->function_symbol())) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4958 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4959 | __ JumpIfSmi(input, false_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4960 | __ CmpObjectType(input, JS_FUNCTION_TYPE, input); |
| 4961 | __ j(equal, true_label); |
| 4962 | __ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE); |
| 4963 | final_branch_condition = equal; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4964 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4965 | } else if (type_name->Equals(heap()->object_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4966 | __ JumpIfSmi(input, false_label); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 4967 | if (!FLAG_harmony_typeof) { |
| 4968 | __ cmp(input, factory()->null_value()); |
| 4969 | __ j(equal, true_label); |
| 4970 | } |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 4971 | __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4972 | __ j(below, false_label); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 4973 | __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
| 4974 | __ j(above, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4975 | // Check for undetectable objects => false. |
| 4976 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4977 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4978 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4979 | |
| 4980 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4981 | __ jmp(false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4982 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4983 | return final_branch_condition; |
| 4984 | } |
| 4985 | |
| 4986 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 4987 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
| 4988 | Register temp = ToRegister(instr->TempAt(0)); |
| 4989 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 4990 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 4991 | |
| 4992 | EmitIsConstructCall(temp); |
| 4993 | EmitBranch(true_block, false_block, equal); |
| 4994 | } |
| 4995 | |
| 4996 | |
| 4997 | void LCodeGen::EmitIsConstructCall(Register temp) { |
| 4998 | // Get the frame pointer for the calling frame. |
| 4999 | __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 5000 | |
| 5001 | // Skip the arguments adaptor frame if it exists. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5002 | Label check_frame_marker; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5003 | __ cmp(Operand(temp, StandardFrameConstants::kContextOffset), |
| 5004 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 5005 | __ j(not_equal, &check_frame_marker, Label::kNear); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 5006 | __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset)); |
| 5007 | |
| 5008 | // Check the marker in the calling frame. |
| 5009 | __ bind(&check_frame_marker); |
| 5010 | __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset), |
| 5011 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5012 | } |
| 5013 | |
| 5014 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5015 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
| 5016 | // Ensure that we have enough space after the previous lazy-bailout |
| 5017 | // instruction for patching the code here. |
| 5018 | int current_pc = masm()->pc_offset(); |
| 5019 | int patch_size = Deoptimizer::patch_size(); |
| 5020 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 5021 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5022 | __ Nop(padding_size); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5023 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5024 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5025 | } |
| 5026 | |
| 5027 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5028 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5029 | EnsureSpaceForLazyDeopt(); |
| 5030 | ASSERT(instr->HasEnvironment()); |
| 5031 | LEnvironment* env = instr->environment(); |
| 5032 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5033 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5034 | } |
| 5035 | |
| 5036 | |
| 5037 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
| 5038 | DeoptimizeIf(no_condition, instr->environment()); |
| 5039 | } |
| 5040 | |
| 5041 | |
| 5042 | void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) { |
| 5043 | LOperand* obj = instr->object(); |
| 5044 | LOperand* key = instr->key(); |
| 5045 | __ push(ToOperand(obj)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5046 | EmitPushTaggedOperand(key); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5047 | ASSERT(instr->HasPointerMap()); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5048 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 5049 | RecordPosition(pointers->position()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5050 | // Create safepoint generator that will also ensure enough space in the |
| 5051 | // reloc info for patching in deoptimization (since this is invoking a |
| 5052 | // builtin) |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5053 | SafepointGenerator safepoint_generator( |
| 5054 | this, pointers, Safepoint::kLazyDeopt); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 5055 | __ push(Immediate(Smi::FromInt(strict_mode_flag()))); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5056 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5057 | } |
| 5058 | |
| 5059 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5060 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5061 | PushSafepointRegistersScope scope(this); |
| 5062 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 5063 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5064 | RecordSafepointWithLazyDeopt( |
| 5065 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 5066 | ASSERT(instr->HasEnvironment()); |
| 5067 | LEnvironment* env = instr->environment(); |
| 5068 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5069 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5070 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5071 | |
| 5072 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 5073 | class DeferredStackCheck: public LDeferredCode { |
| 5074 | public: |
| 5075 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5076 | : LDeferredCode(codegen), instr_(instr) { } |
| 5077 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 5078 | virtual LInstruction* instr() { return instr_; } |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5079 | private: |
| 5080 | LStackCheck* instr_; |
| 5081 | }; |
| 5082 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5083 | ASSERT(instr->HasEnvironment()); |
| 5084 | LEnvironment* env = instr->environment(); |
| 5085 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5086 | // prepare for lazy deoptimization explicitly here. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5087 | if (instr->hydrogen()->is_function_entry()) { |
| 5088 | // Perform stack overflow check. |
| 5089 | Label done; |
| 5090 | ExternalReference stack_limit = |
| 5091 | ExternalReference::address_of_stack_limit(isolate()); |
| 5092 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5093 | __ j(above_equal, &done, Label::kNear); |
| 5094 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5095 | ASSERT(instr->context()->IsRegister()); |
| 5096 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5097 | StackCheckStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 5098 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5099 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5100 | __ bind(&done); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5101 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5102 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5103 | } else { |
| 5104 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 5105 | // Perform stack overflow check if this goto needs it before jumping. |
| 5106 | DeferredStackCheck* deferred_stack_check = |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame^] | 5107 | new(zone()) DeferredStackCheck(this, instr); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5108 | ExternalReference stack_limit = |
| 5109 | ExternalReference::address_of_stack_limit(isolate()); |
| 5110 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5111 | __ j(below, deferred_stack_check->entry()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5112 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5113 | __ bind(instr->done_label()); |
| 5114 | deferred_stack_check->SetExit(instr->done_label()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5115 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5116 | // Don't record a deoptimization index for the safepoint here. |
| 5117 | // This will be done explicitly when emitting call and the safepoint in |
| 5118 | // the deferred code. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 5119 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5120 | } |
| 5121 | |
| 5122 | |
| 5123 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5124 | // This is a pseudo-instruction that ensures that the environment here is |
| 5125 | // properly registered for deoptimization and records the assembler's PC |
| 5126 | // offset. |
| 5127 | LEnvironment* environment = instr->environment(); |
| 5128 | environment->SetSpilledRegisters(instr->SpilledRegisterArray(), |
| 5129 | instr->SpilledDoubleRegisterArray()); |
| 5130 | |
| 5131 | // If the environment were already registered, we would have no way of |
| 5132 | // backpatching it with the spill slot operands. |
| 5133 | ASSERT(!environment->HasBeenRegistered()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5134 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5135 | ASSERT(osr_pc_offset_ == -1); |
| 5136 | osr_pc_offset_ = masm()->pc_offset(); |
| 5137 | } |
| 5138 | |
| 5139 | |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5140 | void LCodeGen::DoIn(LIn* instr) { |
| 5141 | LOperand* obj = instr->object(); |
| 5142 | LOperand* key = instr->key(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 5143 | EmitPushTaggedOperand(key); |
| 5144 | EmitPushTaggedOperand(obj); |
danno@chromium.org | 1044a4d | 2012-04-30 12:34:39 +0000 | [diff] [blame] | 5145 | ASSERT(instr->HasPointerMap()); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5146 | LPointerMap* pointers = instr->pointer_map(); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5147 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 5148 | SafepointGenerator safepoint_generator( |
| 5149 | this, pointers, Safepoint::kLazyDeopt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 5150 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 5151 | } |
| 5152 | |
| 5153 | |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 5154 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 5155 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 5156 | DeoptimizeIf(equal, instr->environment()); |
| 5157 | |
| 5158 | __ cmp(eax, isolate()->factory()->null_value()); |
| 5159 | DeoptimizeIf(equal, instr->environment()); |
| 5160 | |
| 5161 | __ test(eax, Immediate(kSmiTagMask)); |
| 5162 | DeoptimizeIf(zero, instr->environment()); |
| 5163 | |
| 5164 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5165 | __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
| 5166 | DeoptimizeIf(below_equal, instr->environment()); |
| 5167 | |
| 5168 | Label use_cache, call_runtime; |
| 5169 | __ CheckEnumCache(&call_runtime); |
| 5170 | |
| 5171 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 5172 | __ jmp(&use_cache, Label::kNear); |
| 5173 | |
| 5174 | // Get the set of properties to enumerate. |
| 5175 | __ bind(&call_runtime); |
| 5176 | __ push(eax); |
| 5177 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5178 | |
| 5179 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 5180 | isolate()->factory()->meta_map()); |
| 5181 | DeoptimizeIf(not_equal, instr->environment()); |
| 5182 | __ bind(&use_cache); |
| 5183 | } |
| 5184 | |
| 5185 | |
| 5186 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5187 | Register map = ToRegister(instr->map()); |
| 5188 | Register result = ToRegister(instr->result()); |
| 5189 | __ LoadInstanceDescriptors(map, result); |
| 5190 | __ mov(result, |
| 5191 | FieldOperand(result, DescriptorArray::kEnumerationIndexOffset)); |
| 5192 | __ mov(result, |
| 5193 | FieldOperand(result, FixedArray::SizeFor(instr->idx()))); |
| 5194 | __ test(result, result); |
| 5195 | DeoptimizeIf(equal, instr->environment()); |
| 5196 | } |
| 5197 | |
| 5198 | |
| 5199 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5200 | Register object = ToRegister(instr->value()); |
| 5201 | __ cmp(ToRegister(instr->map()), |
| 5202 | FieldOperand(object, HeapObject::kMapOffset)); |
| 5203 | DeoptimizeIf(not_equal, instr->environment()); |
| 5204 | } |
| 5205 | |
| 5206 | |
| 5207 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 5208 | Register object = ToRegister(instr->object()); |
| 5209 | Register index = ToRegister(instr->index()); |
| 5210 | |
| 5211 | Label out_of_object, done; |
| 5212 | __ cmp(index, Immediate(0)); |
| 5213 | __ j(less, &out_of_object); |
| 5214 | __ mov(object, FieldOperand(object, |
| 5215 | index, |
| 5216 | times_half_pointer_size, |
| 5217 | JSObject::kHeaderSize)); |
| 5218 | __ jmp(&done, Label::kNear); |
| 5219 | |
| 5220 | __ bind(&out_of_object); |
| 5221 | __ mov(object, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 5222 | __ neg(index); |
| 5223 | // Index is now equal to out of object property index plus 1. |
| 5224 | __ mov(object, FieldOperand(object, |
| 5225 | index, |
| 5226 | times_half_pointer_size, |
| 5227 | FixedArray::kHeaderSize - kPointerSize)); |
| 5228 | __ bind(&done); |
| 5229 | } |
| 5230 | |
| 5231 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5232 | #undef __ |
| 5233 | |
| 5234 | } } // namespace v8::internal |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 5235 | |
| 5236 | #endif // V8_TARGET_ARCH_IA32 |