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 | |
| 82 | dynamic_frame_alignment_ = chunk()->num_double_slots() > 2 || |
| 83 | info()->osr_ast_id() != AstNode::kNoNumber; |
| 84 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 85 | return GeneratePrologue() && |
| 86 | GenerateBody() && |
| 87 | GenerateDeferredCode() && |
| 88 | GenerateSafepointTable(); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | void LCodeGen::FinishCode(Handle<Code> code) { |
| 93 | ASSERT(is_done()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 94 | code->set_stack_slots(GetStackSlotCount()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 95 | code->set_safepoint_table_offset(safepoints_.GetCodeOffset()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 96 | PopulateDeoptimizationData(code); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 97 | Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(code); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | |
| 101 | void LCodeGen::Abort(const char* format, ...) { |
| 102 | if (FLAG_trace_bailout) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 103 | SmartArrayPointer<char> name( |
| 104 | info()->shared_info()->DebugName()->ToCString()); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 105 | PrintF("Aborting LCodeGen in @\"%s\": ", *name); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 106 | va_list arguments; |
| 107 | va_start(arguments, format); |
| 108 | OS::VPrint(format, arguments); |
| 109 | va_end(arguments); |
| 110 | PrintF("\n"); |
| 111 | } |
| 112 | status_ = ABORTED; |
| 113 | } |
| 114 | |
| 115 | |
| 116 | void LCodeGen::Comment(const char* format, ...) { |
| 117 | if (!FLAG_code_comments) return; |
| 118 | char buffer[4 * KB]; |
| 119 | StringBuilder builder(buffer, ARRAY_SIZE(buffer)); |
| 120 | va_list arguments; |
| 121 | va_start(arguments, format); |
| 122 | builder.AddFormattedList(format, arguments); |
| 123 | va_end(arguments); |
| 124 | |
| 125 | // Copy the string before recording it in the assembler to avoid |
| 126 | // issues when the stack allocated buffer goes out of scope. |
| 127 | size_t length = builder.position(); |
| 128 | Vector<char> copy = Vector<char>::New(length + 1); |
| 129 | memcpy(copy.start(), builder.Finalize(), copy.length()); |
| 130 | masm()->RecordComment(copy.start()); |
| 131 | } |
| 132 | |
| 133 | |
| 134 | bool LCodeGen::GeneratePrologue() { |
| 135 | ASSERT(is_generating()); |
| 136 | |
| 137 | #ifdef DEBUG |
| 138 | if (strlen(FLAG_stop_at) > 0 && |
| 139 | info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { |
| 140 | __ int3(); |
| 141 | } |
| 142 | #endif |
| 143 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 144 | // Strict mode functions and builtins need to replace the receiver |
| 145 | // with undefined when called as functions (without an explicit |
| 146 | // receiver object). ecx is zero for method calls and non-zero for |
| 147 | // function calls. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 148 | if (!info_->is_classic_mode() || info_->is_native()) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 149 | Label ok; |
| 150 | __ test(ecx, Operand(ecx)); |
| 151 | __ j(zero, &ok, Label::kNear); |
| 152 | // +1 for return address. |
| 153 | int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 154 | __ mov(Operand(esp, receiver_offset), |
| 155 | Immediate(isolate()->factory()->undefined_value())); |
| 156 | __ bind(&ok); |
| 157 | } |
| 158 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 159 | if (dynamic_frame_alignment_) { |
| 160 | Label do_not_pad, align_loop; |
| 161 | STATIC_ASSERT(kDoubleSize == 2 * kPointerSize); |
| 162 | // Align esp to a multiple of 2 * kPointerSize. |
| 163 | __ test(esp, Immediate(kPointerSize)); |
| 164 | __ j(zero, &do_not_pad, Label::kNear); |
| 165 | __ push(Immediate(0)); |
| 166 | __ mov(ebx, esp); |
| 167 | // Copy arguments, receiver, and return address. |
| 168 | __ mov(ecx, Immediate(scope()->num_parameters() + 2)); |
| 169 | |
| 170 | __ bind(&align_loop); |
| 171 | __ mov(eax, Operand(ebx, 1 * kPointerSize)); |
| 172 | __ mov(Operand(ebx, 0), eax); |
| 173 | __ add(Operand(ebx), Immediate(kPointerSize)); |
| 174 | __ dec(ecx); |
| 175 | __ j(not_zero, &align_loop, Label::kNear); |
| 176 | __ mov(Operand(ebx, 0), |
| 177 | Immediate(isolate()->factory()->frame_alignment_marker())); |
| 178 | |
| 179 | __ bind(&do_not_pad); |
| 180 | } |
| 181 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 182 | __ push(ebp); // Caller's frame pointer. |
| 183 | __ mov(ebp, esp); |
| 184 | __ push(esi); // Callee's context. |
| 185 | __ push(edi); // Callee's JS function. |
| 186 | |
| 187 | // Reserve space for the stack slots needed by the code. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 188 | int slots = GetStackSlotCount(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 189 | if (slots > 0) { |
| 190 | if (FLAG_debug_code) { |
| 191 | __ mov(Operand(eax), Immediate(slots)); |
| 192 | Label loop; |
| 193 | __ bind(&loop); |
| 194 | __ push(Immediate(kSlotsZapValue)); |
| 195 | __ dec(eax); |
| 196 | __ j(not_zero, &loop); |
| 197 | } else { |
| 198 | __ sub(Operand(esp), Immediate(slots * kPointerSize)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 199 | #ifdef _MSC_VER |
| 200 | // On windows, you may not access the stack more than one page below |
| 201 | // the most recently mapped page. To make the allocated area randomly |
| 202 | // accessible, we write to each page in turn (the value is irrelevant). |
| 203 | const int kPageSize = 4 * KB; |
| 204 | for (int offset = slots * kPointerSize - kPageSize; |
| 205 | offset > 0; |
| 206 | offset -= kPageSize) { |
| 207 | __ mov(Operand(esp, offset), eax); |
| 208 | } |
| 209 | #endif |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 210 | } |
| 211 | } |
| 212 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 213 | // Possibly allocate a local context. |
| 214 | int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 215 | if (heap_slots > 0) { |
| 216 | Comment(";;; Allocate local context"); |
| 217 | // Argument to NewContext is the function, which is still in edi. |
| 218 | __ push(edi); |
| 219 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 220 | FastNewContextStub stub(heap_slots); |
| 221 | __ CallStub(&stub); |
| 222 | } else { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 223 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 224 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 225 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 226 | // Context is returned in both eax and esi. It replaces the context |
| 227 | // passed to us. It's saved in the stack and kept live in esi. |
| 228 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi); |
| 229 | |
| 230 | // Copy parameters into context if necessary. |
| 231 | int num_parameters = scope()->num_parameters(); |
| 232 | for (int i = 0; i < num_parameters; i++) { |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 233 | Variable* var = scope()->parameter(i); |
| 234 | if (var->IsContextSlot()) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 235 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 236 | (num_parameters - 1 - i) * kPointerSize; |
| 237 | // Load parameter from stack. |
| 238 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 239 | // Store it in the context. |
jkummerow@chromium.org | 486075a | 2011-09-07 12:44:28 +0000 | [diff] [blame] | 240 | int context_offset = Context::SlotOffset(var->index()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 241 | __ mov(Operand(esi, context_offset), eax); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 242 | // Update the write barrier. This clobbers eax and ebx. |
| 243 | __ RecordWriteContextSlot(esi, |
| 244 | context_offset, |
| 245 | eax, |
| 246 | ebx, |
| 247 | kDontSaveFPRegs); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 248 | } |
| 249 | } |
| 250 | Comment(";;; End allocate local context"); |
| 251 | } |
| 252 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 253 | // Trace the call. |
| 254 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 255 | // We have not executed any compiled code yet, so esi still holds the |
| 256 | // incoming context. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 257 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 258 | } |
| 259 | return !is_aborted(); |
| 260 | } |
| 261 | |
| 262 | |
| 263 | bool LCodeGen::GenerateBody() { |
| 264 | ASSERT(is_generating()); |
| 265 | bool emit_instructions = true; |
| 266 | for (current_instruction_ = 0; |
| 267 | !is_aborted() && current_instruction_ < instructions_->length(); |
| 268 | current_instruction_++) { |
| 269 | LInstruction* instr = instructions_->at(current_instruction_); |
| 270 | if (instr->IsLabel()) { |
| 271 | LLabel* label = LLabel::cast(instr); |
| 272 | emit_instructions = !label->HasReplacement(); |
| 273 | } |
| 274 | |
| 275 | if (emit_instructions) { |
| 276 | Comment(";;; @%d: %s.", current_instruction_, instr->Mnemonic()); |
| 277 | instr->CompileToNative(this); |
| 278 | } |
| 279 | } |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 280 | EnsureSpaceForLazyDeopt(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 281 | return !is_aborted(); |
| 282 | } |
| 283 | |
| 284 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 285 | bool LCodeGen::GenerateDeferredCode() { |
| 286 | ASSERT(is_generating()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 287 | if (deferred_.length() > 0) { |
| 288 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 289 | LDeferredCode* code = deferred_[i]; |
| 290 | __ bind(code->entry()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 291 | Comment(";;; Deferred code @%d: %s.", |
| 292 | code->instruction_index(), |
| 293 | code->instr()->Mnemonic()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 294 | code->Generate(); |
| 295 | __ jmp(code->exit()); |
| 296 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | // Deferred code is the last part of the instruction sequence. Mark |
| 300 | // the generated code as done unless we bailed out. |
| 301 | if (!is_aborted()) status_ = DONE; |
| 302 | return !is_aborted(); |
| 303 | } |
| 304 | |
| 305 | |
| 306 | bool LCodeGen::GenerateSafepointTable() { |
| 307 | ASSERT(is_done()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 308 | safepoints_.Emit(masm(), GetStackSlotCount()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 309 | return !is_aborted(); |
| 310 | } |
| 311 | |
| 312 | |
| 313 | Register LCodeGen::ToRegister(int index) const { |
| 314 | return Register::FromAllocationIndex(index); |
| 315 | } |
| 316 | |
| 317 | |
| 318 | XMMRegister LCodeGen::ToDoubleRegister(int index) const { |
| 319 | return XMMRegister::FromAllocationIndex(index); |
| 320 | } |
| 321 | |
| 322 | |
| 323 | Register LCodeGen::ToRegister(LOperand* op) const { |
| 324 | ASSERT(op->IsRegister()); |
| 325 | return ToRegister(op->index()); |
| 326 | } |
| 327 | |
| 328 | |
| 329 | XMMRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
| 330 | ASSERT(op->IsDoubleRegister()); |
| 331 | return ToDoubleRegister(op->index()); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | int LCodeGen::ToInteger32(LConstantOperand* op) const { |
| 336 | Handle<Object> value = chunk_->LookupLiteral(op); |
| 337 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsInteger32()); |
| 338 | ASSERT(static_cast<double>(static_cast<int32_t>(value->Number())) == |
| 339 | value->Number()); |
| 340 | return static_cast<int32_t>(value->Number()); |
| 341 | } |
| 342 | |
| 343 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 344 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
| 345 | Handle<Object> literal = chunk_->LookupLiteral(op); |
| 346 | ASSERT(chunk_->LookupLiteralRepresentation(op).IsTagged()); |
| 347 | return literal; |
| 348 | } |
| 349 | |
| 350 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 351 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
| 352 | Handle<Object> value = chunk_->LookupLiteral(op); |
| 353 | return value->Number(); |
| 354 | } |
| 355 | |
| 356 | |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 357 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
| 358 | return chunk_->LookupLiteralRepresentation(op).IsInteger32(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | |
| 362 | Operand LCodeGen::ToOperand(LOperand* op) const { |
| 363 | if (op->IsRegister()) return Operand(ToRegister(op)); |
| 364 | if (op->IsDoubleRegister()) return Operand(ToDoubleRegister(op)); |
| 365 | ASSERT(op->IsStackSlot() || op->IsDoubleStackSlot()); |
| 366 | int index = op->index(); |
| 367 | if (index >= 0) { |
| 368 | // Local or spill slot. Skip the frame pointer, function, and |
| 369 | // context in the fixed part of the frame. |
| 370 | return Operand(ebp, -(index + 3) * kPointerSize); |
| 371 | } else { |
| 372 | // Incoming parameter. Skip the return address. |
| 373 | return Operand(ebp, -(index - 1) * kPointerSize); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 378 | Operand LCodeGen::HighOperand(LOperand* op) { |
| 379 | ASSERT(op->IsDoubleStackSlot()); |
| 380 | int index = op->index(); |
| 381 | int offset = (index >= 0) ? index + 3 : index - 1; |
| 382 | return Operand(ebp, -offset * kPointerSize); |
| 383 | } |
| 384 | |
| 385 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 386 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
| 387 | Translation* translation) { |
| 388 | if (environment == NULL) return; |
| 389 | |
| 390 | // The translation includes one command per value in the environment. |
| 391 | int translation_size = environment->values()->length(); |
| 392 | // The output frame height does not include the parameters. |
| 393 | int height = translation_size - environment->parameter_count(); |
| 394 | |
| 395 | WriteTranslation(environment->outer(), translation); |
| 396 | int closure_id = DefineDeoptimizationLiteral(environment->closure()); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 397 | switch (environment->frame_type()) { |
| 398 | case JS_FUNCTION: |
| 399 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 400 | break; |
| 401 | case JS_CONSTRUCT: |
| 402 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 403 | break; |
| 404 | case ARGUMENTS_ADAPTOR: |
| 405 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 406 | break; |
| 407 | default: |
| 408 | UNREACHABLE(); |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 409 | } |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 410 | for (int i = 0; i < translation_size; ++i) { |
| 411 | LOperand* value = environment->values()->at(i); |
| 412 | // spilled_registers_ and spilled_double_registers_ are either |
| 413 | // both NULL or both set. |
| 414 | if (environment->spilled_registers() != NULL && value != NULL) { |
| 415 | if (value->IsRegister() && |
| 416 | environment->spilled_registers()[value->index()] != NULL) { |
| 417 | translation->MarkDuplicate(); |
| 418 | AddToTranslation(translation, |
| 419 | environment->spilled_registers()[value->index()], |
| 420 | environment->HasTaggedValueAt(i)); |
| 421 | } else if ( |
| 422 | value->IsDoubleRegister() && |
| 423 | environment->spilled_double_registers()[value->index()] != NULL) { |
| 424 | translation->MarkDuplicate(); |
| 425 | AddToTranslation( |
| 426 | translation, |
| 427 | environment->spilled_double_registers()[value->index()], |
| 428 | false); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | AddToTranslation(translation, value, environment->HasTaggedValueAt(i)); |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 437 | void LCodeGen::AddToTranslation(Translation* translation, |
| 438 | LOperand* op, |
| 439 | bool is_tagged) { |
| 440 | if (op == NULL) { |
| 441 | // TODO(twuerthinger): Introduce marker operands to indicate that this value |
| 442 | // is not present and must be reconstructed from the deoptimizer. Currently |
| 443 | // this is only used for the arguments object. |
| 444 | translation->StoreArgumentsObject(); |
| 445 | } else if (op->IsStackSlot()) { |
| 446 | if (is_tagged) { |
| 447 | translation->StoreStackSlot(op->index()); |
| 448 | } else { |
| 449 | translation->StoreInt32StackSlot(op->index()); |
| 450 | } |
| 451 | } else if (op->IsDoubleStackSlot()) { |
| 452 | translation->StoreDoubleStackSlot(op->index()); |
| 453 | } else if (op->IsArgument()) { |
| 454 | ASSERT(is_tagged); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 455 | int src_index = GetStackSlotCount() + op->index(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 456 | translation->StoreStackSlot(src_index); |
| 457 | } else if (op->IsRegister()) { |
| 458 | Register reg = ToRegister(op); |
| 459 | if (is_tagged) { |
| 460 | translation->StoreRegister(reg); |
| 461 | } else { |
| 462 | translation->StoreInt32Register(reg); |
| 463 | } |
| 464 | } else if (op->IsDoubleRegister()) { |
| 465 | XMMRegister reg = ToDoubleRegister(op); |
| 466 | translation->StoreDoubleRegister(reg); |
| 467 | } else if (op->IsConstantOperand()) { |
| 468 | Handle<Object> literal = chunk()->LookupLiteral(LConstantOperand::cast(op)); |
| 469 | int src_index = DefineDeoptimizationLiteral(literal); |
| 470 | translation->StoreLiteral(src_index); |
| 471 | } else { |
| 472 | UNREACHABLE(); |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 477 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 478 | RelocInfo::Mode mode, |
| 479 | LInstruction* instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 480 | SafepointMode safepoint_mode) { |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 481 | ASSERT(instr != NULL); |
| 482 | LPointerMap* pointers = instr->pointer_map(); |
| 483 | RecordPosition(pointers->position()); |
| 484 | __ call(code, mode); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 485 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 486 | |
| 487 | // Signal that we don't inline smi code before these stubs in the |
| 488 | // optimizing code generator. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 489 | if (code->kind() == Code::BINARY_OP_IC || |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 490 | code->kind() == Code::COMPARE_IC) { |
| 491 | __ nop(); |
| 492 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 496 | void LCodeGen::CallCode(Handle<Code> code, |
| 497 | RelocInfo::Mode mode, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 498 | LInstruction* instr) { |
| 499 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 503 | void LCodeGen::CallRuntime(const Runtime::Function* fun, |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 504 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 505 | LInstruction* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 506 | ASSERT(instr != NULL); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 507 | ASSERT(instr->HasPointerMap()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 508 | LPointerMap* pointers = instr->pointer_map(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 509 | RecordPosition(pointers->position()); |
| 510 | |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 511 | __ CallRuntime(fun, argc); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 512 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 513 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 517 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 518 | int argc, |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 519 | LInstruction* instr, |
| 520 | LOperand* context) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 521 | if (context->IsRegister()) { |
| 522 | if (!ToRegister(context).is(esi)) { |
| 523 | __ mov(esi, ToRegister(context)); |
| 524 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 525 | } else if (context->IsStackSlot()) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 526 | __ mov(esi, ToOperand(context)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 527 | } else if (context->IsConstantOperand()) { |
| 528 | Handle<Object> literal = |
| 529 | chunk_->LookupLiteral(LConstantOperand::cast(context)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 530 | __ LoadHeapObject(esi, Handle<Context>::cast(literal)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 531 | } else { |
| 532 | UNREACHABLE(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 533 | } |
| 534 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 535 | __ CallRuntimeSaveDoubles(id); |
| 536 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 537 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 541 | void LCodeGen::RegisterEnvironmentForDeoptimization( |
| 542 | LEnvironment* environment, Safepoint::DeoptMode mode) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 543 | if (!environment->HasBeenRegistered()) { |
| 544 | // Physical stack frame layout: |
| 545 | // -x ............. -4 0 ..................................... y |
| 546 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 547 | |
| 548 | // Layout of the environment: |
| 549 | // 0 ..................................................... size-1 |
| 550 | // [parameters] [locals] [expression stack including arguments] |
| 551 | |
| 552 | // Layout of the translation: |
| 553 | // 0 ........................................................ size - 1 + 4 |
| 554 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 555 | // |>------------ translation_size ------------<| |
| 556 | |
| 557 | int frame_count = 0; |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 558 | int jsframe_count = 0; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 559 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 560 | ++frame_count; |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 561 | if (e->frame_type() == JS_FUNCTION) { |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 562 | ++jsframe_count; |
| 563 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 564 | } |
yangguo@chromium.org | 659ceec | 2012-01-26 07:37:54 +0000 | [diff] [blame] | 565 | Translation translation(&translations_, frame_count, jsframe_count); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 566 | WriteTranslation(environment, &translation); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 567 | int deoptimization_index = deoptimizations_.length(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 568 | int pc_offset = masm()->pc_offset(); |
| 569 | environment->Register(deoptimization_index, |
| 570 | translation.index(), |
| 571 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 572 | deoptimizations_.Add(environment); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | |
| 577 | void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 578 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 579 | ASSERT(environment->HasBeenRegistered()); |
| 580 | int id = environment->deoptimization_index(); |
| 581 | Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); |
| 582 | ASSERT(entry != NULL); |
| 583 | if (entry == NULL) { |
| 584 | Abort("bailout was not prepared"); |
| 585 | return; |
| 586 | } |
| 587 | |
| 588 | if (FLAG_deopt_every_n_times != 0) { |
| 589 | Handle<SharedFunctionInfo> shared(info_->shared_info()); |
| 590 | Label no_deopt; |
| 591 | __ pushfd(); |
| 592 | __ push(eax); |
| 593 | __ push(ebx); |
| 594 | __ mov(ebx, shared); |
| 595 | __ mov(eax, FieldOperand(ebx, SharedFunctionInfo::kDeoptCounterOffset)); |
| 596 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 597 | __ j(not_zero, &no_deopt, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 598 | if (FLAG_trap_on_deopt) __ int3(); |
| 599 | __ mov(eax, Immediate(Smi::FromInt(FLAG_deopt_every_n_times))); |
| 600 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kDeoptCounterOffset), eax); |
| 601 | __ pop(ebx); |
| 602 | __ pop(eax); |
| 603 | __ popfd(); |
| 604 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 605 | |
| 606 | __ bind(&no_deopt); |
| 607 | __ mov(FieldOperand(ebx, SharedFunctionInfo::kDeoptCounterOffset), eax); |
| 608 | __ pop(ebx); |
| 609 | __ pop(eax); |
| 610 | __ popfd(); |
| 611 | } |
| 612 | |
| 613 | if (cc == no_condition) { |
| 614 | if (FLAG_trap_on_deopt) __ int3(); |
| 615 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 616 | } else { |
| 617 | if (FLAG_trap_on_deopt) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 618 | Label done; |
| 619 | __ j(NegateCondition(cc), &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 620 | __ int3(); |
| 621 | __ jmp(entry, RelocInfo::RUNTIME_ENTRY); |
| 622 | __ bind(&done); |
| 623 | } else { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 624 | __ j(cc, entry, RelocInfo::RUNTIME_ENTRY); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | |
| 630 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 631 | int length = deoptimizations_.length(); |
| 632 | if (length == 0) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 633 | Handle<DeoptimizationInputData> data = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 634 | factory()->NewDeoptimizationInputData(length, TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 635 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 636 | Handle<ByteArray> translations = translations_.CreateByteArray(); |
| 637 | data->SetTranslationByteArray(*translations); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 638 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
| 639 | |
| 640 | Handle<FixedArray> literals = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 641 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 642 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 643 | literals->set(i, *deoptimization_literals_[i]); |
| 644 | } |
| 645 | data->SetLiteralArray(*literals); |
| 646 | |
| 647 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id())); |
| 648 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 649 | |
| 650 | // Populate the deoptimization entries. |
| 651 | for (int i = 0; i < length; i++) { |
| 652 | LEnvironment* env = deoptimizations_[i]; |
| 653 | data->SetAstId(i, Smi::FromInt(env->ast_id())); |
| 654 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 655 | data->SetArgumentsStackHeight(i, |
| 656 | Smi::FromInt(env->arguments_stack_height())); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 657 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 658 | } |
| 659 | code->set_deoptimization_data(*data); |
| 660 | } |
| 661 | |
| 662 | |
| 663 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 664 | int result = deoptimization_literals_.length(); |
| 665 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 666 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 667 | } |
| 668 | deoptimization_literals_.Add(literal); |
| 669 | return result; |
| 670 | } |
| 671 | |
| 672 | |
| 673 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
| 674 | ASSERT(deoptimization_literals_.length() == 0); |
| 675 | |
| 676 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 677 | chunk()->inlined_closures(); |
| 678 | |
| 679 | for (int i = 0, length = inlined_closures->length(); |
| 680 | i < length; |
| 681 | i++) { |
| 682 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 683 | } |
| 684 | |
| 685 | inlined_function_count_ = deoptimization_literals_.length(); |
| 686 | } |
| 687 | |
| 688 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 689 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 690 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 691 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 692 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 693 | } else { |
| 694 | ASSERT(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 695 | RecordSafepointWithRegisters( |
| 696 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 701 | void LCodeGen::RecordSafepoint( |
| 702 | LPointerMap* pointers, |
| 703 | Safepoint::Kind kind, |
| 704 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 705 | Safepoint::DeoptMode deopt_mode) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 706 | ASSERT(kind == expected_safepoint_kind_); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 707 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 708 | Safepoint safepoint = |
| 709 | safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 710 | for (int i = 0; i < operands->length(); i++) { |
| 711 | LOperand* pointer = operands->at(i); |
| 712 | if (pointer->IsStackSlot()) { |
| 713 | safepoint.DefinePointerSlot(pointer->index()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 714 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
| 715 | safepoint.DefinePointerRegister(ToRegister(pointer)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 716 | } |
| 717 | } |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 718 | } |
| 719 | |
| 720 | |
| 721 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 722 | Safepoint::DeoptMode mode) { |
| 723 | RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 727 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 728 | LPointerMap empty_pointers(RelocInfo::kNoPosition); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 729 | RecordSafepoint(&empty_pointers, mode); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 730 | } |
| 731 | |
| 732 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 733 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 734 | int arguments, |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 735 | Safepoint::DeoptMode mode) { |
| 736 | RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 737 | } |
| 738 | |
| 739 | |
| 740 | void LCodeGen::RecordPosition(int position) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 741 | if (position == RelocInfo::kNoPosition) return; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 742 | masm()->positions_recorder()->RecordPosition(position); |
| 743 | } |
| 744 | |
| 745 | |
| 746 | void LCodeGen::DoLabel(LLabel* label) { |
| 747 | if (label->is_loop_header()) { |
| 748 | Comment(";;; B%d - LOOP entry", label->block_id()); |
| 749 | } else { |
| 750 | Comment(";;; B%d", label->block_id()); |
| 751 | } |
| 752 | __ bind(label->label()); |
| 753 | current_block_ = label->block_id(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 754 | DoGap(label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 755 | } |
| 756 | |
| 757 | |
| 758 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 759 | resolver_.Resolve(move); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | |
| 763 | void LCodeGen::DoGap(LGap* gap) { |
| 764 | for (int i = LGap::FIRST_INNER_POSITION; |
| 765 | i <= LGap::LAST_INNER_POSITION; |
| 766 | i++) { |
| 767 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 768 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 769 | if (move != NULL) DoParallelMove(move); |
| 770 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 774 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 775 | DoGap(instr); |
| 776 | } |
| 777 | |
| 778 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 779 | void LCodeGen::DoParameter(LParameter* instr) { |
| 780 | // Nothing to do. |
| 781 | } |
| 782 | |
| 783 | |
| 784 | void LCodeGen::DoCallStub(LCallStub* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 785 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 786 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 787 | switch (instr->hydrogen()->major_key()) { |
| 788 | case CodeStub::RegExpConstructResult: { |
| 789 | RegExpConstructResultStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 790 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 791 | break; |
| 792 | } |
| 793 | case CodeStub::RegExpExec: { |
| 794 | RegExpExecStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 795 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 796 | break; |
| 797 | } |
| 798 | case CodeStub::SubString: { |
| 799 | SubStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 800 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 801 | break; |
| 802 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 803 | case CodeStub::NumberToString: { |
| 804 | NumberToStringStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 805 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 806 | break; |
| 807 | } |
| 808 | case CodeStub::StringAdd: { |
| 809 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 810 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 811 | break; |
| 812 | } |
| 813 | case CodeStub::StringCompare: { |
| 814 | StringCompareStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 815 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 816 | break; |
| 817 | } |
| 818 | case CodeStub::TranscendentalCache: { |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 819 | TranscendentalCacheStub stub(instr->transcendental_type(), |
| 820 | TranscendentalCacheStub::TAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 821 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 822 | break; |
| 823 | } |
| 824 | default: |
| 825 | UNREACHABLE(); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | |
| 830 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
| 831 | // Nothing to do. |
| 832 | } |
| 833 | |
| 834 | |
| 835 | void LCodeGen::DoModI(LModI* instr) { |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 836 | if (instr->hydrogen()->HasPowerOf2Divisor()) { |
| 837 | Register dividend = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 838 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 839 | int32_t divisor = |
| 840 | HConstant::cast(instr->hydrogen()->right())->Integer32Value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 841 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 842 | if (divisor < 0) divisor = -divisor; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 843 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 844 | Label positive_dividend, done; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 845 | __ test(dividend, Operand(dividend)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 846 | __ j(not_sign, &positive_dividend, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 847 | __ neg(dividend); |
| 848 | __ and_(dividend, divisor - 1); |
| 849 | __ neg(dividend); |
| 850 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 851 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 852 | DeoptimizeIf(no_condition, instr->environment()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 853 | } else { |
| 854 | __ jmp(&done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 855 | } |
| 856 | __ bind(&positive_dividend); |
| 857 | __ and_(dividend, divisor - 1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 858 | __ bind(&done); |
| 859 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 860 | Label done, remainder_eq_dividend, slow, do_subtraction, both_positive; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 861 | Register left_reg = ToRegister(instr->InputAt(0)); |
| 862 | Register right_reg = ToRegister(instr->InputAt(1)); |
| 863 | Register result_reg = ToRegister(instr->result()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 864 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 865 | ASSERT(left_reg.is(eax)); |
| 866 | ASSERT(result_reg.is(edx)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 867 | ASSERT(!right_reg.is(eax)); |
| 868 | ASSERT(!right_reg.is(edx)); |
| 869 | |
| 870 | // Check for x % 0. |
| 871 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 872 | __ test(right_reg, Operand(right_reg)); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 873 | DeoptimizeIf(zero, instr->environment()); |
| 874 | } |
| 875 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 876 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 877 | __ j(zero, &remainder_eq_dividend, Label::kNear); |
| 878 | __ j(sign, &slow, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 879 | |
| 880 | __ test(right_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 881 | __ j(not_sign, &both_positive, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 882 | // The sign of the divisor doesn't matter. |
| 883 | __ neg(right_reg); |
| 884 | |
| 885 | __ bind(&both_positive); |
| 886 | // If the dividend is smaller than the nonnegative |
| 887 | // divisor, the dividend is the result. |
| 888 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 889 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 890 | |
| 891 | // Check if the divisor is a PowerOfTwo integer. |
| 892 | Register scratch = ToRegister(instr->TempAt(0)); |
| 893 | __ mov(scratch, right_reg); |
| 894 | __ sub(Operand(scratch), Immediate(1)); |
| 895 | __ test(scratch, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 896 | __ j(not_zero, &do_subtraction, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 897 | __ and_(left_reg, Operand(scratch)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 898 | __ jmp(&remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 899 | |
| 900 | __ bind(&do_subtraction); |
| 901 | const int kUnfolds = 3; |
| 902 | // Try a few subtractions of the dividend. |
| 903 | __ mov(scratch, left_reg); |
| 904 | for (int i = 0; i < kUnfolds; i++) { |
| 905 | // Reduce the dividend by the divisor. |
| 906 | __ sub(left_reg, Operand(right_reg)); |
| 907 | // Check if the dividend is less than the divisor. |
| 908 | __ cmp(left_reg, Operand(right_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 909 | __ j(less, &remainder_eq_dividend, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 910 | } |
| 911 | __ mov(left_reg, scratch); |
| 912 | |
| 913 | // Slow case, using idiv instruction. |
| 914 | __ bind(&slow); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 915 | // Sign extend to edx. |
| 916 | __ cdq(); |
| 917 | |
| 918 | // Check for (0 % -x) that will produce negative zero. |
| 919 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 920 | Label positive_left; |
| 921 | Label done; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 922 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 923 | __ j(not_sign, &positive_left, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 924 | __ idiv(right_reg); |
| 925 | |
| 926 | // 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] | 927 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 928 | __ j(not_zero, &done, Label::kNear); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 929 | |
| 930 | DeoptimizeIf(no_condition, instr->environment()); |
| 931 | __ bind(&positive_left); |
| 932 | __ idiv(right_reg); |
| 933 | __ bind(&done); |
| 934 | } else { |
| 935 | __ idiv(right_reg); |
| 936 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 937 | __ jmp(&done, Label::kNear); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 938 | |
| 939 | __ bind(&remainder_eq_dividend); |
| 940 | __ mov(result_reg, left_reg); |
| 941 | |
| 942 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 943 | } |
| 944 | } |
| 945 | |
| 946 | |
| 947 | void LCodeGen::DoDivI(LDivI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 948 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 949 | ASSERT(ToRegister(instr->result()).is(eax)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 950 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 951 | ASSERT(!ToRegister(instr->InputAt(1)).is(eax)); |
| 952 | ASSERT(!ToRegister(instr->InputAt(1)).is(edx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 953 | |
| 954 | Register left_reg = eax; |
| 955 | |
| 956 | // Check for x / 0. |
| 957 | Register right_reg = ToRegister(right); |
| 958 | if (instr->hydrogen()->CheckFlag(HValue::kCanBeDivByZero)) { |
| 959 | __ test(right_reg, ToOperand(right)); |
| 960 | DeoptimizeIf(zero, instr->environment()); |
| 961 | } |
| 962 | |
| 963 | // Check for (0 / -x) that will produce negative zero. |
| 964 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 965 | Label left_not_zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 966 | __ test(left_reg, Operand(left_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 967 | __ j(not_zero, &left_not_zero, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 968 | __ test(right_reg, ToOperand(right)); |
| 969 | DeoptimizeIf(sign, instr->environment()); |
| 970 | __ bind(&left_not_zero); |
| 971 | } |
| 972 | |
| 973 | // Check for (-kMinInt / -1). |
| 974 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 975 | Label left_not_min_int; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 976 | __ cmp(left_reg, kMinInt); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 977 | __ j(not_zero, &left_not_min_int, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 978 | __ cmp(right_reg, -1); |
| 979 | DeoptimizeIf(zero, instr->environment()); |
| 980 | __ bind(&left_not_min_int); |
| 981 | } |
| 982 | |
| 983 | // Sign extend to edx. |
| 984 | __ cdq(); |
| 985 | __ idiv(right_reg); |
| 986 | |
| 987 | // Deoptimize if remainder is not 0. |
| 988 | __ test(edx, Operand(edx)); |
| 989 | DeoptimizeIf(not_zero, instr->environment()); |
| 990 | } |
| 991 | |
| 992 | |
| 993 | void LCodeGen::DoMulI(LMulI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 994 | Register left = ToRegister(instr->InputAt(0)); |
| 995 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 996 | |
| 997 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 998 | __ mov(ToRegister(instr->TempAt(0)), left); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 999 | } |
| 1000 | |
| 1001 | if (right->IsConstantOperand()) { |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 1002 | // Try strength reductions on the multiplication. |
| 1003 | // All replacement instructions are at most as long as the imul |
| 1004 | // and have better latency. |
| 1005 | int constant = ToInteger32(LConstantOperand::cast(right)); |
| 1006 | if (constant == -1) { |
| 1007 | __ neg(left); |
| 1008 | } else if (constant == 0) { |
| 1009 | __ xor_(left, Operand(left)); |
| 1010 | } else if (constant == 2) { |
| 1011 | __ add(left, Operand(left)); |
| 1012 | } else if (!instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1013 | // If we know that the multiplication can't overflow, it's safe to |
| 1014 | // use instructions that don't set the overflow flag for the |
| 1015 | // multiplication. |
| 1016 | switch (constant) { |
| 1017 | case 1: |
| 1018 | // Do nothing. |
| 1019 | break; |
| 1020 | case 3: |
| 1021 | __ lea(left, Operand(left, left, times_2, 0)); |
| 1022 | break; |
| 1023 | case 4: |
| 1024 | __ shl(left, 2); |
| 1025 | break; |
| 1026 | case 5: |
| 1027 | __ lea(left, Operand(left, left, times_4, 0)); |
| 1028 | break; |
| 1029 | case 8: |
| 1030 | __ shl(left, 3); |
| 1031 | break; |
| 1032 | case 9: |
| 1033 | __ lea(left, Operand(left, left, times_8, 0)); |
| 1034 | break; |
| 1035 | case 16: |
| 1036 | __ shl(left, 4); |
| 1037 | break; |
| 1038 | default: |
| 1039 | __ imul(left, left, constant); |
| 1040 | break; |
| 1041 | } |
| 1042 | } else { |
| 1043 | __ imul(left, left, constant); |
| 1044 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1045 | } else { |
| 1046 | __ imul(left, ToOperand(right)); |
| 1047 | } |
| 1048 | |
| 1049 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1050 | DeoptimizeIf(overflow, instr->environment()); |
| 1051 | } |
| 1052 | |
| 1053 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1054 | // Bail out if the result is supposed to be negative zero. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1055 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1056 | __ test(left, Operand(left)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1057 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1058 | if (right->IsConstantOperand()) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1059 | if (ToInteger32(LConstantOperand::cast(right)) <= 0) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1060 | DeoptimizeIf(no_condition, instr->environment()); |
| 1061 | } |
| 1062 | } else { |
| 1063 | // Test the non-zero operand for negative sign. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1064 | __ or_(ToRegister(instr->TempAt(0)), ToOperand(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1065 | DeoptimizeIf(sign, instr->environment()); |
| 1066 | } |
| 1067 | __ bind(&done); |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | |
| 1072 | void LCodeGen::DoBitI(LBitI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1073 | LOperand* left = instr->InputAt(0); |
| 1074 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1075 | ASSERT(left->Equals(instr->result())); |
| 1076 | ASSERT(left->IsRegister()); |
| 1077 | |
| 1078 | if (right->IsConstantOperand()) { |
| 1079 | int right_operand = ToInteger32(LConstantOperand::cast(right)); |
| 1080 | switch (instr->op()) { |
| 1081 | case Token::BIT_AND: |
| 1082 | __ and_(ToRegister(left), right_operand); |
| 1083 | break; |
| 1084 | case Token::BIT_OR: |
| 1085 | __ or_(ToRegister(left), right_operand); |
| 1086 | break; |
| 1087 | case Token::BIT_XOR: |
| 1088 | __ xor_(ToRegister(left), right_operand); |
| 1089 | break; |
| 1090 | default: |
| 1091 | UNREACHABLE(); |
| 1092 | break; |
| 1093 | } |
| 1094 | } else { |
| 1095 | switch (instr->op()) { |
| 1096 | case Token::BIT_AND: |
| 1097 | __ and_(ToRegister(left), ToOperand(right)); |
| 1098 | break; |
| 1099 | case Token::BIT_OR: |
| 1100 | __ or_(ToRegister(left), ToOperand(right)); |
| 1101 | break; |
| 1102 | case Token::BIT_XOR: |
| 1103 | __ xor_(ToRegister(left), ToOperand(right)); |
| 1104 | break; |
| 1105 | default: |
| 1106 | UNREACHABLE(); |
| 1107 | break; |
| 1108 | } |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | |
| 1113 | void LCodeGen::DoShiftI(LShiftI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1114 | LOperand* left = instr->InputAt(0); |
| 1115 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1116 | ASSERT(left->Equals(instr->result())); |
| 1117 | ASSERT(left->IsRegister()); |
| 1118 | if (right->IsRegister()) { |
| 1119 | ASSERT(ToRegister(right).is(ecx)); |
| 1120 | |
| 1121 | switch (instr->op()) { |
| 1122 | case Token::SAR: |
| 1123 | __ sar_cl(ToRegister(left)); |
| 1124 | break; |
| 1125 | case Token::SHR: |
| 1126 | __ shr_cl(ToRegister(left)); |
| 1127 | if (instr->can_deopt()) { |
| 1128 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1129 | DeoptimizeIf(not_zero, instr->environment()); |
| 1130 | } |
| 1131 | break; |
| 1132 | case Token::SHL: |
| 1133 | __ shl_cl(ToRegister(left)); |
| 1134 | break; |
| 1135 | default: |
| 1136 | UNREACHABLE(); |
| 1137 | break; |
| 1138 | } |
| 1139 | } else { |
| 1140 | int value = ToInteger32(LConstantOperand::cast(right)); |
| 1141 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1142 | switch (instr->op()) { |
| 1143 | case Token::SAR: |
| 1144 | if (shift_count != 0) { |
| 1145 | __ sar(ToRegister(left), shift_count); |
| 1146 | } |
| 1147 | break; |
| 1148 | case Token::SHR: |
| 1149 | if (shift_count == 0 && instr->can_deopt()) { |
| 1150 | __ test(ToRegister(left), Immediate(0x80000000)); |
| 1151 | DeoptimizeIf(not_zero, instr->environment()); |
| 1152 | } else { |
| 1153 | __ shr(ToRegister(left), shift_count); |
| 1154 | } |
| 1155 | break; |
| 1156 | case Token::SHL: |
| 1157 | if (shift_count != 0) { |
| 1158 | __ shl(ToRegister(left), shift_count); |
| 1159 | } |
| 1160 | break; |
| 1161 | default: |
| 1162 | UNREACHABLE(); |
| 1163 | break; |
| 1164 | } |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | |
| 1169 | void LCodeGen::DoSubI(LSubI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1170 | LOperand* left = instr->InputAt(0); |
| 1171 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1172 | ASSERT(left->Equals(instr->result())); |
| 1173 | |
| 1174 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1175 | __ sub(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1176 | } else { |
| 1177 | __ sub(ToRegister(left), ToOperand(right)); |
| 1178 | } |
| 1179 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1180 | DeoptimizeIf(overflow, instr->environment()); |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | |
| 1185 | void LCodeGen::DoConstantI(LConstantI* instr) { |
| 1186 | ASSERT(instr->result()->IsRegister()); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1187 | __ Set(ToRegister(instr->result()), Immediate(instr->value())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1188 | } |
| 1189 | |
| 1190 | |
| 1191 | void LCodeGen::DoConstantD(LConstantD* instr) { |
| 1192 | ASSERT(instr->result()->IsDoubleRegister()); |
| 1193 | XMMRegister res = ToDoubleRegister(instr->result()); |
| 1194 | double v = instr->value(); |
| 1195 | // Use xor to produce +0.0 in a fast and compact way, but avoid to |
| 1196 | // do so if the constant is -0.0. |
| 1197 | if (BitCast<uint64_t, double>(v) == 0) { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1198 | __ xorps(res, res); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1199 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1200 | Register temp = ToRegister(instr->TempAt(0)); |
| 1201 | uint64_t int_val = BitCast<uint64_t, double>(v); |
| 1202 | int32_t lower = static_cast<int32_t>(int_val); |
| 1203 | int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt)); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1204 | if (CpuFeatures::IsSupported(SSE4_1)) { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1205 | CpuFeatures::Scope scope(SSE4_1); |
| 1206 | if (lower != 0) { |
| 1207 | __ Set(temp, Immediate(lower)); |
| 1208 | __ movd(res, Operand(temp)); |
| 1209 | __ Set(temp, Immediate(upper)); |
| 1210 | __ pinsrd(res, Operand(temp), 1); |
| 1211 | } else { |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1212 | __ xorps(res, res); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1213 | __ Set(temp, Immediate(upper)); |
| 1214 | __ pinsrd(res, Operand(temp), 1); |
| 1215 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1216 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 1217 | __ Set(temp, Immediate(upper)); |
| 1218 | __ movd(res, Operand(temp)); |
| 1219 | __ psllq(res, 32); |
| 1220 | if (lower != 0) { |
| 1221 | __ Set(temp, Immediate(lower)); |
| 1222 | __ movd(xmm0, Operand(temp)); |
| 1223 | __ por(res, xmm0); |
| 1224 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | |
| 1230 | void LCodeGen::DoConstantT(LConstantT* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1231 | Register reg = ToRegister(instr->result()); |
| 1232 | Handle<Object> handle = instr->value(); |
| 1233 | if (handle->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1234 | __ LoadHeapObject(reg, Handle<HeapObject>::cast(handle)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1235 | } else { |
| 1236 | __ Set(reg, Immediate(handle)); |
| 1237 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1238 | } |
| 1239 | |
| 1240 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1241 | void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1242 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1243 | Register array = ToRegister(instr->InputAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1244 | __ mov(result, FieldOperand(array, JSArray::kLengthOffset)); |
| 1245 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1246 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1247 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1248 | void LCodeGen::DoFixedArrayBaseLength( |
| 1249 | LFixedArrayBaseLength* instr) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 1250 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1251 | Register array = ToRegister(instr->InputAt(0)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1252 | __ mov(result, FieldOperand(array, FixedArrayBase::kLengthOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1256 | void LCodeGen::DoElementsKind(LElementsKind* instr) { |
| 1257 | Register result = ToRegister(instr->result()); |
| 1258 | Register input = ToRegister(instr->InputAt(0)); |
| 1259 | |
| 1260 | // Load map into |result|. |
| 1261 | __ mov(result, FieldOperand(input, HeapObject::kMapOffset)); |
| 1262 | // Load the map's "bit field 2" into |result|. We only need the first byte, |
| 1263 | // but the following masking takes care of that anyway. |
| 1264 | __ mov(result, FieldOperand(result, Map::kBitField2Offset)); |
| 1265 | // Retrieve elements_kind from bit field 2. |
| 1266 | __ and_(result, Map::kElementsKindMask); |
| 1267 | __ shr(result, Map::kElementsKindShift); |
| 1268 | } |
| 1269 | |
| 1270 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1271 | void LCodeGen::DoValueOf(LValueOf* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1272 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1273 | Register result = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1274 | Register map = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1275 | ASSERT(input.is(result)); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame^] | 1276 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1277 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1278 | // If the object is a smi return the object. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1279 | __ JumpIfSmi(input, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1280 | |
| 1281 | // If the object is not a value type, return the object. |
| 1282 | __ CmpObjectType(input, JS_VALUE_TYPE, map); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1283 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1284 | __ mov(result, FieldOperand(input, JSValue::kValueOffset)); |
| 1285 | |
| 1286 | __ bind(&done); |
| 1287 | } |
| 1288 | |
| 1289 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame^] | 1290 | void LCodeGen::DoDateField(LDateField* instr) { |
| 1291 | Register object = ToRegister(instr->InputAt(0)); |
| 1292 | Register result = ToRegister(instr->result()); |
| 1293 | Register scratch = ToRegister(instr->TempAt(0)); |
| 1294 | Smi* index = instr->index(); |
| 1295 | Label runtime, done; |
| 1296 | ASSERT(object.is(result)); |
| 1297 | ASSERT(object.is(eax)); |
| 1298 | |
| 1299 | #ifdef DEBUG |
| 1300 | __ AbortIfSmi(object); |
| 1301 | __ CmpObjectType(object, JS_DATE_TYPE, scratch); |
| 1302 | __ Assert(equal, "Trying to get date field from non-date."); |
| 1303 | #endif |
| 1304 | |
| 1305 | if (index->value() == 0) { |
| 1306 | __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
| 1307 | } else { |
| 1308 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1309 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1310 | __ mov(scratch, Operand::StaticVariable(stamp)); |
| 1311 | __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
| 1312 | __ j(not_equal, &runtime, Label::kNear); |
| 1313 | __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
| 1314 | kPointerSize * index->value())); |
| 1315 | __ jmp(&done); |
| 1316 | } |
| 1317 | __ bind(&runtime); |
| 1318 | __ PrepareCallCFunction(2, scratch); |
| 1319 | __ mov(Operand(esp, 0), object); |
| 1320 | __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
| 1321 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1322 | __ bind(&done); |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1327 | void LCodeGen::DoBitNotI(LBitNotI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1328 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1329 | ASSERT(input->Equals(instr->result())); |
| 1330 | __ not_(ToRegister(input)); |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | void LCodeGen::DoThrow(LThrow* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1335 | __ push(ToOperand(instr->value())); |
| 1336 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1337 | CallRuntime(Runtime::kThrow, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1338 | |
| 1339 | if (FLAG_debug_code) { |
| 1340 | Comment("Unreachable code."); |
| 1341 | __ int3(); |
| 1342 | } |
| 1343 | } |
| 1344 | |
| 1345 | |
| 1346 | void LCodeGen::DoAddI(LAddI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1347 | LOperand* left = instr->InputAt(0); |
| 1348 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1349 | ASSERT(left->Equals(instr->result())); |
| 1350 | |
| 1351 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1352 | __ add(ToOperand(left), ToInteger32Immediate(right)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1353 | } else { |
| 1354 | __ add(ToRegister(left), ToOperand(right)); |
| 1355 | } |
| 1356 | |
| 1357 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1358 | DeoptimizeIf(overflow, instr->environment()); |
| 1359 | } |
| 1360 | } |
| 1361 | |
| 1362 | |
| 1363 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1364 | XMMRegister left = ToDoubleRegister(instr->InputAt(0)); |
| 1365 | XMMRegister right = ToDoubleRegister(instr->InputAt(1)); |
| 1366 | XMMRegister result = ToDoubleRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1367 | // Modulo uses a fixed result register. |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1368 | ASSERT(instr->op() == Token::MOD || left.is(result)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1369 | switch (instr->op()) { |
| 1370 | case Token::ADD: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1371 | __ addsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1372 | break; |
| 1373 | case Token::SUB: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1374 | __ subsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1375 | break; |
| 1376 | case Token::MUL: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1377 | __ mulsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1378 | break; |
| 1379 | case Token::DIV: |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1380 | __ divsd(left, right); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1381 | break; |
| 1382 | case Token::MOD: { |
| 1383 | // Pass two doubles as arguments on the stack. |
| 1384 | __ PrepareCallCFunction(4, eax); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1385 | __ movdbl(Operand(esp, 0 * kDoubleSize), left); |
| 1386 | __ movdbl(Operand(esp, 1 * kDoubleSize), right); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1387 | __ CallCFunction( |
| 1388 | ExternalReference::double_fp_operation(Token::MOD, isolate()), |
| 1389 | 4); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1390 | |
| 1391 | // Return value is in st(0) on ia32. |
| 1392 | // Store it into the (fixed) result register. |
| 1393 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 1394 | __ fstp_d(Operand(esp, 0)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1395 | __ movdbl(result, Operand(esp, 0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1396 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 1397 | break; |
| 1398 | } |
| 1399 | default: |
| 1400 | UNREACHABLE(); |
| 1401 | break; |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1407 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 1408 | ASSERT(ToRegister(instr->left()).is(edx)); |
| 1409 | ASSERT(ToRegister(instr->right()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1410 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 1411 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1412 | BinaryOpStub stub(instr->op(), NO_OVERWRITE); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1413 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1414 | __ nop(); // Signals no inlined code. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1415 | } |
| 1416 | |
| 1417 | |
| 1418 | int LCodeGen::GetNextEmittedBlock(int block) { |
| 1419 | for (int i = block + 1; i < graph()->blocks()->length(); ++i) { |
| 1420 | LLabel* label = chunk_->GetLabel(i); |
| 1421 | if (!label->HasReplacement()) return i; |
| 1422 | } |
| 1423 | return -1; |
| 1424 | } |
| 1425 | |
| 1426 | |
| 1427 | void LCodeGen::EmitBranch(int left_block, int right_block, Condition cc) { |
| 1428 | int next_block = GetNextEmittedBlock(current_block_); |
| 1429 | right_block = chunk_->LookupDestination(right_block); |
| 1430 | left_block = chunk_->LookupDestination(left_block); |
| 1431 | |
| 1432 | if (right_block == left_block) { |
| 1433 | EmitGoto(left_block); |
| 1434 | } else if (left_block == next_block) { |
| 1435 | __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); |
| 1436 | } else if (right_block == next_block) { |
| 1437 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1438 | } else { |
| 1439 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 1440 | __ jmp(chunk_->GetAssemblyLabel(right_block)); |
| 1441 | } |
| 1442 | } |
| 1443 | |
| 1444 | |
| 1445 | void LCodeGen::DoBranch(LBranch* instr) { |
| 1446 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1447 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1448 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1449 | Representation r = instr->hydrogen()->value()->representation(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1450 | if (r.IsInteger32()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1451 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1452 | __ test(reg, Operand(reg)); |
| 1453 | EmitBranch(true_block, false_block, not_zero); |
| 1454 | } else if (r.IsDouble()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1455 | XMMRegister reg = ToDoubleRegister(instr->InputAt(0)); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1456 | __ xorps(xmm0, xmm0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1457 | __ ucomisd(reg, xmm0); |
| 1458 | EmitBranch(true_block, false_block, not_equal); |
| 1459 | } else { |
| 1460 | ASSERT(r.IsTagged()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1461 | Register reg = ToRegister(instr->InputAt(0)); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1462 | HType type = instr->hydrogen()->value()->type(); |
| 1463 | if (type.IsBoolean()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1464 | __ cmp(reg, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1465 | EmitBranch(true_block, false_block, equal); |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 1466 | } else if (type.IsSmi()) { |
| 1467 | __ test(reg, Operand(reg)); |
| 1468 | EmitBranch(true_block, false_block, not_equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1469 | } else { |
| 1470 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1471 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1472 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1473 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
| 1474 | // Avoid deopts in the case where we've never executed this path before. |
| 1475 | if (expected.IsEmpty()) expected = ToBooleanStub::all_types(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1476 | |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1477 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 1478 | // undefined -> false. |
| 1479 | __ cmp(reg, factory()->undefined_value()); |
| 1480 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1481 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1482 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 1483 | // true -> true. |
| 1484 | __ cmp(reg, factory()->true_value()); |
| 1485 | __ j(equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1486 | // false -> false. |
| 1487 | __ cmp(reg, factory()->false_value()); |
| 1488 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1489 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1490 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 1491 | // 'null' -> false. |
| 1492 | __ cmp(reg, factory()->null_value()); |
| 1493 | __ j(equal, false_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1494 | } |
| 1495 | |
| 1496 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 1497 | // Smis: 0 -> false, all other -> true. |
| 1498 | __ test(reg, Operand(reg)); |
| 1499 | __ j(equal, false_label); |
| 1500 | __ JumpIfSmi(reg, true_label); |
| 1501 | } else if (expected.NeedsMap()) { |
| 1502 | // If we need a map later and have a Smi -> deopt. |
| 1503 | __ test(reg, Immediate(kSmiTagMask)); |
| 1504 | DeoptimizeIf(zero, instr->environment()); |
| 1505 | } |
| 1506 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1507 | Register map = no_reg; // Keep the compiler happy. |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1508 | if (expected.NeedsMap()) { |
| 1509 | map = ToRegister(instr->TempAt(0)); |
| 1510 | ASSERT(!map.is(reg)); |
| 1511 | __ mov(map, FieldOperand(reg, HeapObject::kMapOffset)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1512 | |
| 1513 | if (expected.CanBeUndetectable()) { |
| 1514 | // Undetectable -> false. |
| 1515 | __ test_b(FieldOperand(map, Map::kBitFieldOffset), |
| 1516 | 1 << Map::kIsUndetectable); |
| 1517 | __ j(not_zero, false_label); |
| 1518 | } |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1519 | } |
| 1520 | |
| 1521 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 1522 | // spec object -> true. |
| 1523 | __ CmpInstanceType(map, FIRST_SPEC_OBJECT_TYPE); |
| 1524 | __ j(above_equal, true_label); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 1528 | // String value -> false iff empty. |
| 1529 | Label not_string; |
| 1530 | __ CmpInstanceType(map, FIRST_NONSTRING_TYPE); |
| 1531 | __ j(above_equal, ¬_string, Label::kNear); |
| 1532 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
| 1533 | __ j(not_zero, true_label); |
| 1534 | __ jmp(false_label); |
| 1535 | __ bind(¬_string); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1536 | } |
| 1537 | |
| 1538 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 1539 | // heap number -> false iff +0, -0, or NaN. |
| 1540 | Label not_heap_number; |
| 1541 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| 1542 | factory()->heap_number_map()); |
| 1543 | __ j(not_equal, ¬_heap_number, Label::kNear); |
| 1544 | __ fldz(); |
| 1545 | __ fld_d(FieldOperand(reg, HeapNumber::kValueOffset)); |
| 1546 | __ FCmp(); |
| 1547 | __ j(zero, false_label); |
| 1548 | __ jmp(true_label); |
| 1549 | __ bind(¬_heap_number); |
vegorov@chromium.org | 7943d46 | 2011-08-01 11:41:52 +0000 | [diff] [blame] | 1550 | } |
| 1551 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1552 | // We've seen something for the first time -> deopt. |
| 1553 | DeoptimizeIf(no_condition, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1554 | } |
| 1555 | } |
| 1556 | } |
| 1557 | |
| 1558 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1559 | void LCodeGen::EmitGoto(int block) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1560 | block = chunk_->LookupDestination(block); |
| 1561 | int next_block = GetNextEmittedBlock(current_block_); |
| 1562 | if (block != next_block) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1563 | __ jmp(chunk_->GetAssemblyLabel(block)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1564 | } |
| 1565 | } |
| 1566 | |
| 1567 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1568 | void LCodeGen::DoGoto(LGoto* instr) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 1569 | EmitGoto(instr->block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 1574 | Condition cond = no_condition; |
| 1575 | switch (op) { |
| 1576 | case Token::EQ: |
| 1577 | case Token::EQ_STRICT: |
| 1578 | cond = equal; |
| 1579 | break; |
| 1580 | case Token::LT: |
| 1581 | cond = is_unsigned ? below : less; |
| 1582 | break; |
| 1583 | case Token::GT: |
| 1584 | cond = is_unsigned ? above : greater; |
| 1585 | break; |
| 1586 | case Token::LTE: |
| 1587 | cond = is_unsigned ? below_equal : less_equal; |
| 1588 | break; |
| 1589 | case Token::GTE: |
| 1590 | cond = is_unsigned ? above_equal : greater_equal; |
| 1591 | break; |
| 1592 | case Token::IN: |
| 1593 | case Token::INSTANCEOF: |
| 1594 | default: |
| 1595 | UNREACHABLE(); |
| 1596 | } |
| 1597 | return cond; |
| 1598 | } |
| 1599 | |
| 1600 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1601 | void LCodeGen::DoCmpIDAndBranch(LCmpIDAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1602 | LOperand* left = instr->InputAt(0); |
| 1603 | LOperand* right = instr->InputAt(1); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1604 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1605 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1606 | Condition cc = TokenToCondition(instr->op(), instr->is_double()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1607 | |
| 1608 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 1609 | // We can statically evaluate the comparison. |
| 1610 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 1611 | double right_val = ToDouble(LConstantOperand::cast(right)); |
| 1612 | int next_block = |
| 1613 | EvalComparison(instr->op(), left_val, right_val) ? true_block |
| 1614 | : false_block; |
| 1615 | EmitGoto(next_block); |
| 1616 | } else { |
| 1617 | if (instr->is_double()) { |
| 1618 | // Don't base result on EFLAGS when a NaN is involved. Instead |
| 1619 | // jump to the false block. |
| 1620 | __ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
| 1621 | __ j(parity_even, chunk_->GetAssemblyLabel(false_block)); |
| 1622 | } else { |
| 1623 | if (right->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1624 | __ cmp(ToRegister(left), ToInteger32Immediate(right)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1625 | } else if (left->IsConstantOperand()) { |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 1626 | __ cmp(ToOperand(right), ToInteger32Immediate(left)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1627 | // We transposed the operands. Reverse the condition. |
| 1628 | cc = ReverseCondition(cc); |
| 1629 | } else { |
| 1630 | __ cmp(ToRegister(left), ToOperand(right)); |
| 1631 | } |
| 1632 | } |
| 1633 | EmitBranch(true_block, false_block, cc); |
| 1634 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1635 | } |
| 1636 | |
| 1637 | |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1638 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1639 | Register left = ToRegister(instr->InputAt(0)); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1640 | Operand right = ToOperand(instr->InputAt(1)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1641 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1642 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1643 | |
| 1644 | __ cmp(left, Operand(right)); |
| 1645 | EmitBranch(true_block, false_block, equal); |
| 1646 | } |
| 1647 | |
| 1648 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1649 | void LCodeGen::DoCmpConstantEqAndBranch(LCmpConstantEqAndBranch* instr) { |
| 1650 | Register left = ToRegister(instr->InputAt(0)); |
| 1651 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1652 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1653 | |
| 1654 | __ cmp(left, instr->hydrogen()->right()); |
| 1655 | EmitBranch(true_block, false_block, equal); |
| 1656 | } |
| 1657 | |
| 1658 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1659 | void LCodeGen::DoIsNilAndBranch(LIsNilAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1660 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1661 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1662 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1663 | // If the expression is known to be untagged or a smi, then it's definitely |
| 1664 | // not null, and it can't be a an undetectable object. |
| 1665 | if (instr->hydrogen()->representation().IsSpecialization() || |
| 1666 | instr->hydrogen()->type().IsSmi()) { |
| 1667 | EmitGoto(false_block); |
| 1668 | return; |
| 1669 | } |
| 1670 | |
| 1671 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1672 | Handle<Object> nil_value = instr->nil() == kNullValue ? |
| 1673 | factory()->null_value() : |
| 1674 | factory()->undefined_value(); |
| 1675 | __ cmp(reg, nil_value); |
| 1676 | if (instr->kind() == kStrictEquality) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1677 | EmitBranch(true_block, false_block, equal); |
| 1678 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1679 | Handle<Object> other_nil_value = instr->nil() == kNullValue ? |
| 1680 | factory()->undefined_value() : |
| 1681 | factory()->null_value(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1682 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1683 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1684 | __ j(equal, true_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1685 | __ cmp(reg, other_nil_value); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1686 | __ j(equal, true_label); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1687 | __ JumpIfSmi(reg, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1688 | // Check for undetectable objects by looking in the bit field in |
| 1689 | // the map. The object has already been smi checked. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1690 | Register scratch = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1691 | __ mov(scratch, FieldOperand(reg, HeapObject::kMapOffset)); |
| 1692 | __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset)); |
| 1693 | __ test(scratch, Immediate(1 << Map::kIsUndetectable)); |
| 1694 | EmitBranch(true_block, false_block, not_zero); |
| 1695 | } |
| 1696 | } |
| 1697 | |
| 1698 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1699 | Condition LCodeGen::EmitIsObject(Register input, |
| 1700 | Register temp1, |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1701 | Label* is_not_object, |
| 1702 | Label* is_object) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1703 | __ JumpIfSmi(input, is_not_object); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1704 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1705 | __ cmp(input, isolate()->factory()->null_value()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1706 | __ j(equal, is_object); |
| 1707 | |
| 1708 | __ mov(temp1, FieldOperand(input, HeapObject::kMapOffset)); |
| 1709 | // Undetectable objects behave like undefined. |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1710 | __ test_b(FieldOperand(temp1, Map::kBitFieldOffset), |
| 1711 | 1 << Map::kIsUndetectable); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1712 | __ j(not_zero, is_not_object); |
| 1713 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1714 | __ movzx_b(temp1, FieldOperand(temp1, Map::kInstanceTypeOffset)); |
| 1715 | __ cmp(temp1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1716 | __ j(below, is_not_object); |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1717 | __ cmp(temp1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1718 | return below_equal; |
| 1719 | } |
| 1720 | |
| 1721 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1722 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1723 | Register reg = ToRegister(instr->InputAt(0)); |
| 1724 | Register temp = ToRegister(instr->TempAt(0)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1725 | |
| 1726 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1727 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1728 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1729 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1730 | |
vegorov@chromium.org | 3cf4731 | 2011-06-29 13:20:01 +0000 | [diff] [blame] | 1731 | Condition true_cond = EmitIsObject(reg, temp, false_label, true_label); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1732 | |
| 1733 | EmitBranch(true_block, false_block, true_cond); |
| 1734 | } |
| 1735 | |
| 1736 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1737 | Condition LCodeGen::EmitIsString(Register input, |
| 1738 | Register temp1, |
| 1739 | Label* is_not_string) { |
| 1740 | __ JumpIfSmi(input, is_not_string); |
| 1741 | |
| 1742 | Condition cond = masm_->IsObjectStringType(input, temp1, temp1); |
| 1743 | |
| 1744 | return cond; |
| 1745 | } |
| 1746 | |
| 1747 | |
| 1748 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
| 1749 | Register reg = ToRegister(instr->InputAt(0)); |
| 1750 | Register temp = ToRegister(instr->TempAt(0)); |
| 1751 | |
| 1752 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1753 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1754 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1755 | |
| 1756 | Condition true_cond = EmitIsString(reg, temp, false_label); |
| 1757 | |
| 1758 | EmitBranch(true_block, false_block, true_cond); |
| 1759 | } |
| 1760 | |
| 1761 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1762 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1763 | Operand input = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1764 | |
| 1765 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1766 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1767 | |
| 1768 | __ test(input, Immediate(kSmiTagMask)); |
| 1769 | EmitBranch(true_block, false_block, zero); |
| 1770 | } |
| 1771 | |
| 1772 | |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1773 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
| 1774 | Register input = ToRegister(instr->InputAt(0)); |
| 1775 | Register temp = ToRegister(instr->TempAt(0)); |
| 1776 | |
| 1777 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1778 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1779 | |
| 1780 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1781 | __ JumpIfSmi(input, chunk_->GetAssemblyLabel(false_block)); |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 1782 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 1783 | __ test_b(FieldOperand(temp, Map::kBitFieldOffset), |
| 1784 | 1 << Map::kIsUndetectable); |
| 1785 | EmitBranch(true_block, false_block, not_zero); |
| 1786 | } |
| 1787 | |
| 1788 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 1789 | static Condition ComputeCompareCondition(Token::Value op) { |
| 1790 | switch (op) { |
| 1791 | case Token::EQ_STRICT: |
| 1792 | case Token::EQ: |
| 1793 | return equal; |
| 1794 | case Token::LT: |
| 1795 | return less; |
| 1796 | case Token::GT: |
| 1797 | return greater; |
| 1798 | case Token::LTE: |
| 1799 | return less_equal; |
| 1800 | case Token::GTE: |
| 1801 | return greater_equal; |
| 1802 | default: |
| 1803 | UNREACHABLE(); |
| 1804 | return no_condition; |
| 1805 | } |
| 1806 | } |
| 1807 | |
| 1808 | |
| 1809 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 1810 | Token::Value op = instr->op(); |
| 1811 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1812 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1813 | |
| 1814 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
| 1815 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 1816 | |
| 1817 | Condition condition = ComputeCompareCondition(op); |
| 1818 | __ test(eax, Operand(eax)); |
| 1819 | |
| 1820 | EmitBranch(true_block, false_block, condition); |
| 1821 | } |
| 1822 | |
| 1823 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1824 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1825 | InstanceType from = instr->from(); |
| 1826 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1827 | if (from == FIRST_TYPE) return to; |
| 1828 | ASSERT(from == to || to == LAST_TYPE); |
| 1829 | return from; |
| 1830 | } |
| 1831 | |
| 1832 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1833 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1834 | InstanceType from = instr->from(); |
| 1835 | InstanceType to = instr->to(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1836 | if (from == to) return equal; |
| 1837 | if (to == LAST_TYPE) return above_equal; |
| 1838 | if (from == FIRST_TYPE) return below_equal; |
| 1839 | UNREACHABLE(); |
| 1840 | return equal; |
| 1841 | } |
| 1842 | |
| 1843 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1844 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1845 | Register input = ToRegister(instr->InputAt(0)); |
| 1846 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1847 | |
| 1848 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1849 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1850 | |
| 1851 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1852 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1853 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1854 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1855 | __ CmpObjectType(input, TestType(instr->hydrogen()), temp); |
| 1856 | EmitBranch(true_block, false_block, BranchCondition(instr->hydrogen())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1857 | } |
| 1858 | |
| 1859 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1860 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
| 1861 | Register input = ToRegister(instr->InputAt(0)); |
| 1862 | Register result = ToRegister(instr->result()); |
| 1863 | |
| 1864 | if (FLAG_debug_code) { |
| 1865 | __ AbortIfNotString(input); |
| 1866 | } |
| 1867 | |
| 1868 | __ mov(result, FieldOperand(input, String::kHashFieldOffset)); |
| 1869 | __ IndexFromHash(result, result); |
| 1870 | } |
| 1871 | |
| 1872 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1873 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 1874 | LHasCachedArrayIndexAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1875 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1876 | |
| 1877 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1878 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1879 | |
| 1880 | __ test(FieldOperand(input, String::kHashFieldOffset), |
| 1881 | Immediate(String::kContainsCachedArrayIndexMask)); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1882 | EmitBranch(true_block, false_block, equal); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | // 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] | 1887 | // the temp registers, but not the input. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1888 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 1889 | Label* is_false, |
| 1890 | Handle<String>class_name, |
| 1891 | Register input, |
| 1892 | Register temp, |
| 1893 | Register temp2) { |
| 1894 | ASSERT(!input.is(temp)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1895 | ASSERT(!input.is(temp2)); |
| 1896 | ASSERT(!temp.is(temp2)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1897 | __ JumpIfSmi(input, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1898 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1899 | if (class_name->IsEqualTo(CStrVector("Function"))) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1900 | // Assuming the following assertions, we can use the same compares to test |
| 1901 | // for both being a function type and being in the object type range. |
| 1902 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 1903 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 1904 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 1905 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 1906 | LAST_SPEC_OBJECT_TYPE - 1); |
| 1907 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 1908 | __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
| 1909 | __ j(below, is_false); |
| 1910 | __ j(equal, is_true); |
| 1911 | __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
| 1912 | __ j(equal, is_true); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1913 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1914 | // Faster code path to avoid two compares: subtract lower bound from the |
| 1915 | // actual type and do a signed compare with the width of the type range. |
| 1916 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 1917 | __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1918 | __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 1919 | __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 1920 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1921 | __ j(above, is_false); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1922 | } |
| 1923 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1924 | // 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] | 1925 | // Check if the constructor in the map is a function. |
| 1926 | __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1927 | // Objects with a non-function constructor have class 'Object'. |
| 1928 | __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); |
| 1929 | if (class_name->IsEqualTo(CStrVector("Object"))) { |
| 1930 | __ j(not_equal, is_true); |
| 1931 | } else { |
| 1932 | __ j(not_equal, is_false); |
| 1933 | } |
| 1934 | |
| 1935 | // temp now contains the constructor function. Grab the |
| 1936 | // instance class name from there. |
| 1937 | __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 1938 | __ mov(temp, FieldOperand(temp, |
| 1939 | SharedFunctionInfo::kInstanceClassNameOffset)); |
| 1940 | // The class name we are testing against is a symbol because it's a literal. |
| 1941 | // The name in the constructor is a symbol because of the way the context is |
| 1942 | // booted. This routine isn't expected to work for random API-created |
| 1943 | // classes and it doesn't have to because you can't access it with natives |
| 1944 | // syntax. Since both sides are symbols it is sufficient to use an identity |
| 1945 | // comparison. |
| 1946 | __ cmp(temp, class_name); |
| 1947 | // End with the answer in the z flag. |
| 1948 | } |
| 1949 | |
| 1950 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1951 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1952 | Register input = ToRegister(instr->InputAt(0)); |
| 1953 | Register temp = ToRegister(instr->TempAt(0)); |
| 1954 | Register temp2 = ToRegister(instr->TempAt(1)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1955 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1956 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 1957 | |
| 1958 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 1959 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 1960 | |
| 1961 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 1962 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 1963 | |
| 1964 | EmitClassOfTest(true_label, false_label, class_name, input, temp, temp2); |
| 1965 | |
| 1966 | EmitBranch(true_block, false_block, equal); |
| 1967 | } |
| 1968 | |
| 1969 | |
| 1970 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1971 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1972 | int true_block = instr->true_block_id(); |
| 1973 | int false_block = instr->false_block_id(); |
| 1974 | |
| 1975 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map()); |
| 1976 | EmitBranch(true_block, false_block, equal); |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 1981 | // Object and function are in fixed registers defined by the stub. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1982 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 1983 | InstanceofStub stub(InstanceofStub::kArgsInRegisters); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 1984 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1985 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1986 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1987 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1988 | __ j(zero, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1989 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 1990 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1991 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1992 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1993 | __ bind(&done); |
| 1994 | } |
| 1995 | |
| 1996 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 1997 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
| 1998 | class DeferredInstanceOfKnownGlobal: public LDeferredCode { |
| 1999 | public: |
| 2000 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2001 | LInstanceOfKnownGlobal* instr) |
| 2002 | : LDeferredCode(codegen), instr_(instr) { } |
| 2003 | virtual void Generate() { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2004 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2005 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2006 | virtual LInstruction* instr() { return instr_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2007 | Label* map_check() { return &map_check_; } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2008 | private: |
| 2009 | LInstanceOfKnownGlobal* instr_; |
| 2010 | Label map_check_; |
| 2011 | }; |
| 2012 | |
| 2013 | DeferredInstanceOfKnownGlobal* deferred; |
| 2014 | deferred = new DeferredInstanceOfKnownGlobal(this, instr); |
| 2015 | |
| 2016 | Label done, false_result; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2017 | Register object = ToRegister(instr->InputAt(1)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2018 | Register temp = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2019 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2020 | // A Smi is not an instance of anything. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2021 | __ JumpIfSmi(object, &false_result); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2022 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2023 | // 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] | 2024 | // hole value will be patched to the last map/result pair generated by the |
| 2025 | // instanceof stub. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2026 | Label cache_miss; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2027 | Register map = ToRegister(instr->TempAt(0)); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2028 | __ mov(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2029 | __ bind(deferred->map_check()); // Label for calculating code patching. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 2030 | Handle<JSGlobalPropertyCell> cache_cell = |
| 2031 | factory()->NewJSGlobalPropertyCell(factory()->the_hole_value()); |
| 2032 | __ cmp(map, Operand::Cell(cache_cell)); // Patched to cached map. |
vegorov@chromium.org | 7304bca | 2011-05-16 12:14:13 +0000 | [diff] [blame] | 2033 | __ j(not_equal, &cache_miss, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2034 | __ 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] | 2035 | __ jmp(&done); |
| 2036 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2037 | // The inlined call site cache did not match. Check for null and string |
| 2038 | // before calling the deferred code. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2039 | __ bind(&cache_miss); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 2040 | // Null is not an instance of anything. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2041 | __ cmp(object, factory()->null_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2042 | __ j(equal, &false_result); |
| 2043 | |
| 2044 | // String values are not instances of anything. |
| 2045 | Condition is_string = masm_->IsObjectStringType(object, temp, temp); |
| 2046 | __ j(is_string, &false_result); |
| 2047 | |
| 2048 | // Go to the deferred code. |
| 2049 | __ jmp(deferred->entry()); |
| 2050 | |
| 2051 | __ bind(&false_result); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2052 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2053 | |
| 2054 | // Here result has either true or false. Deferred code also produces true or |
| 2055 | // false object. |
| 2056 | __ bind(deferred->exit()); |
| 2057 | __ bind(&done); |
| 2058 | } |
| 2059 | |
| 2060 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2061 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2062 | Label* map_check) { |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2063 | PushSafepointRegistersScope scope(this); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2064 | |
| 2065 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2066 | flags = static_cast<InstanceofStub::Flags>( |
| 2067 | flags | InstanceofStub::kArgsInRegisters); |
| 2068 | flags = static_cast<InstanceofStub::Flags>( |
| 2069 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2070 | flags = static_cast<InstanceofStub::Flags>( |
| 2071 | flags | InstanceofStub::kReturnTrueFalseObject); |
| 2072 | InstanceofStub stub(flags); |
| 2073 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2074 | // Get the temp register reserved by the instruction. This needs to be a |
| 2075 | // register which is pushed last by PushSafepointRegisters as top of the |
| 2076 | // stack is used to pass the offset to the location of the map check to |
| 2077 | // the stub. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2078 | Register temp = ToRegister(instr->TempAt(0)); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2079 | ASSERT(MacroAssembler::SafepointRegisterStackIndex(temp) == 0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2080 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2081 | static const int kAdditionalDelta = 13; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2082 | int delta = masm_->SizeOfCodeGeneratedSince(map_check) + kAdditionalDelta; |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2083 | __ mov(temp, Immediate(delta)); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2084 | __ StoreToSafepointRegisterSlot(temp, temp); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2085 | CallCodeGeneric(stub.GetCode(), |
| 2086 | RelocInfo::CODE_TARGET, |
| 2087 | instr, |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2088 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2089 | ASSERT(instr->HasDeoptimizationEnvironment()); |
| 2090 | LEnvironment* env = instr->deoptimization_environment(); |
| 2091 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
| 2092 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2093 | // 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] | 2094 | __ StoreToSafepointRegisterSlot(eax, eax); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2095 | } |
| 2096 | |
| 2097 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2098 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2099 | Token::Value op = instr->op(); |
| 2100 | |
| 2101 | Handle<Code> ic = CompareIC::GetUninitialized(op); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2102 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2103 | |
| 2104 | Condition condition = ComputeCompareCondition(op); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2105 | Label true_value, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2106 | __ test(eax, Operand(eax)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2107 | __ j(condition, &true_value, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2108 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2109 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2110 | __ bind(&true_value); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2111 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2112 | __ bind(&done); |
| 2113 | } |
| 2114 | |
| 2115 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2116 | void LCodeGen::DoReturn(LReturn* instr) { |
| 2117 | if (FLAG_trace) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2118 | // Preserve the return value on the stack and rely on the runtime call |
| 2119 | // to return the value in the same register. We're leaving the code |
| 2120 | // managed by the register allocator and tearing down the frame, it's |
| 2121 | // safe to write to the context register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2122 | __ push(eax); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2123 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2124 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2125 | } |
| 2126 | __ mov(esp, ebp); |
| 2127 | __ pop(ebp); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2128 | if (dynamic_frame_alignment_) { |
| 2129 | Label aligned; |
| 2130 | // Frame alignment marker (padding) is below arguments, |
| 2131 | // and receiver, so its return-address-relative offset is |
| 2132 | // (num_arguments + 2) words. |
| 2133 | __ cmp(Operand(esp, (GetParameterCount() + 2) * kPointerSize), |
| 2134 | Immediate(factory()->frame_alignment_marker())); |
| 2135 | __ j(not_equal, &aligned); |
| 2136 | __ Ret((GetParameterCount() + 2) * kPointerSize, ecx); |
| 2137 | __ bind(&aligned); |
| 2138 | } |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2139 | __ Ret((GetParameterCount() + 1) * kPointerSize, ecx); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2140 | } |
| 2141 | |
| 2142 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2143 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2144 | Register result = ToRegister(instr->result()); |
| 2145 | __ mov(result, Operand::Cell(instr->hydrogen()->cell())); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2146 | if (instr->hydrogen()->RequiresHoleCheck()) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2147 | __ cmp(result, factory()->the_hole_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2148 | DeoptimizeIf(equal, instr->environment()); |
| 2149 | } |
| 2150 | } |
| 2151 | |
| 2152 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2153 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2154 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 2155 | ASSERT(ToRegister(instr->global_object()).is(eax)); |
| 2156 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2157 | |
| 2158 | __ mov(ecx, instr->name()); |
| 2159 | RelocInfo::Mode mode = instr->for_typeof() ? RelocInfo::CODE_TARGET : |
| 2160 | RelocInfo::CODE_TARGET_CONTEXT; |
| 2161 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2162 | CallCode(ic, mode, instr); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2163 | } |
| 2164 | |
| 2165 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2166 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2167 | Register value = ToRegister(instr->value()); |
| 2168 | Handle<JSGlobalPropertyCell> cell_handle = instr->hydrogen()->cell(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2169 | |
| 2170 | // If the cell we are storing to contains the hole it could have |
| 2171 | // been deleted from the property dictionary. In that case, we need |
| 2172 | // to update the property details in the property dictionary to mark |
| 2173 | // it as no longer deleted. We deoptimize in that case. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2174 | if (instr->hydrogen()->RequiresHoleCheck()) { |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2175 | __ cmp(Operand::Cell(cell_handle), factory()->the_hole_value()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2176 | DeoptimizeIf(equal, instr->environment()); |
| 2177 | } |
| 2178 | |
| 2179 | // Store the value. |
danno@chromium.org | e78f9fc | 2011-12-21 08:29:34 +0000 | [diff] [blame] | 2180 | __ mov(Operand::Cell(cell_handle), value); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2181 | // Cells are always rescanned, so no write barrier here. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2182 | } |
| 2183 | |
| 2184 | |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2185 | void LCodeGen::DoStoreGlobalGeneric(LStoreGlobalGeneric* instr) { |
| 2186 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 2187 | ASSERT(ToRegister(instr->global_object()).is(edx)); |
| 2188 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 2189 | |
| 2190 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2191 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2192 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 2193 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2194 | CallCode(ic, RelocInfo::CODE_TARGET_CONTEXT, instr); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 2195 | } |
| 2196 | |
| 2197 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2198 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2199 | Register context = ToRegister(instr->context()); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2200 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2201 | __ mov(result, ContextOperand(context, instr->slot_index())); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2202 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2203 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2204 | __ cmp(result, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2205 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2206 | DeoptimizeIf(equal, instr->environment()); |
| 2207 | } else { |
| 2208 | Label is_not_hole; |
| 2209 | __ j(not_equal, &is_not_hole, Label::kNear); |
| 2210 | __ mov(result, factory()->undefined_value()); |
| 2211 | __ bind(&is_not_hole); |
| 2212 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2213 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2214 | } |
| 2215 | |
| 2216 | |
| 2217 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2218 | Register context = ToRegister(instr->context()); |
| 2219 | Register value = ToRegister(instr->value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2220 | |
| 2221 | Label skip_assignment; |
| 2222 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2223 | Operand target = ContextOperand(context, instr->slot_index()); |
| 2224 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2225 | __ cmp(target, factory()->the_hole_value()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2226 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
| 2227 | DeoptimizeIf(equal, instr->environment()); |
| 2228 | } else { |
| 2229 | __ j(not_equal, &skip_assignment, Label::kNear); |
| 2230 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2231 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2232 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2233 | __ mov(target, value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2234 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 2235 | HType type = instr->hydrogen()->value()->type(); |
| 2236 | SmiCheck check_needed = |
| 2237 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2238 | Register temp = ToRegister(instr->TempAt(0)); |
| 2239 | int offset = Context::SlotOffset(instr->slot_index()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2240 | __ RecordWriteContextSlot(context, |
| 2241 | offset, |
| 2242 | value, |
| 2243 | temp, |
| 2244 | kSaveFPRegs, |
| 2245 | EMIT_REMEMBERED_SET, |
| 2246 | check_needed); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2247 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2248 | |
| 2249 | __ bind(&skip_assignment); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2250 | } |
| 2251 | |
| 2252 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2253 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2254 | Register object = ToRegister(instr->object()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2255 | Register result = ToRegister(instr->result()); |
| 2256 | if (instr->hydrogen()->is_in_object()) { |
| 2257 | __ mov(result, FieldOperand(object, instr->hydrogen()->offset())); |
| 2258 | } else { |
| 2259 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2260 | __ mov(result, FieldOperand(result, instr->hydrogen()->offset())); |
| 2261 | } |
| 2262 | } |
| 2263 | |
| 2264 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2265 | void LCodeGen::EmitLoadFieldOrConstantFunction(Register result, |
| 2266 | Register object, |
| 2267 | Handle<Map> type, |
| 2268 | Handle<String> name) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2269 | LookupResult lookup(isolate()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2270 | type->LookupInDescriptors(NULL, *name, &lookup); |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 2271 | ASSERT(lookup.IsFound() && |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2272 | (lookup.type() == FIELD || lookup.type() == CONSTANT_FUNCTION)); |
| 2273 | if (lookup.type() == FIELD) { |
| 2274 | int index = lookup.GetLocalFieldIndexFromMap(*type); |
| 2275 | int offset = index * kPointerSize; |
| 2276 | if (index < 0) { |
| 2277 | // Negative property indices are in-object properties, indexed |
| 2278 | // from the end of the fixed part of the object. |
| 2279 | __ mov(result, FieldOperand(object, offset + type->instance_size())); |
| 2280 | } else { |
| 2281 | // Non-negative property indices are in the properties array. |
| 2282 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 2283 | __ mov(result, FieldOperand(result, offset + FixedArray::kHeaderSize)); |
| 2284 | } |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2285 | } else { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2286 | Handle<JSFunction> function(lookup.GetConstantFunctionFromMap(*type)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2287 | __ LoadHeapObject(result, function); |
| 2288 | } |
| 2289 | } |
| 2290 | |
| 2291 | |
| 2292 | void LCodeGen::EmitPushTaggedOperand(LOperand* operand) { |
| 2293 | ASSERT(!operand->IsDoubleRegister()); |
| 2294 | if (operand->IsConstantOperand()) { |
| 2295 | Handle<Object> object = ToHandle(LConstantOperand::cast(operand)); |
| 2296 | if (object->IsSmi()) { |
| 2297 | __ Push(Handle<Smi>::cast(object)); |
| 2298 | } else { |
| 2299 | __ PushHeapObject(Handle<HeapObject>::cast(object)); |
| 2300 | } |
| 2301 | } else if (operand->IsRegister()) { |
| 2302 | __ push(ToRegister(operand)); |
| 2303 | } else { |
| 2304 | __ push(ToOperand(operand)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2305 | } |
| 2306 | } |
| 2307 | |
| 2308 | |
| 2309 | void LCodeGen::DoLoadNamedFieldPolymorphic(LLoadNamedFieldPolymorphic* instr) { |
| 2310 | Register object = ToRegister(instr->object()); |
| 2311 | Register result = ToRegister(instr->result()); |
| 2312 | |
| 2313 | int map_count = instr->hydrogen()->types()->length(); |
| 2314 | Handle<String> name = instr->hydrogen()->name(); |
| 2315 | if (map_count == 0) { |
| 2316 | ASSERT(instr->hydrogen()->need_generic()); |
| 2317 | __ mov(ecx, name); |
| 2318 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2319 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2320 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2321 | Label done; |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2322 | for (int i = 0; i < map_count - 1; ++i) { |
| 2323 | Handle<Map> map = instr->hydrogen()->types()->at(i); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2324 | Label next; |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2325 | __ cmp(FieldOperand(object, HeapObject::kMapOffset), map); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2326 | __ j(not_equal, &next, Label::kNear); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2327 | EmitLoadFieldOrConstantFunction(result, object, map, name); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2328 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2329 | __ bind(&next); |
| 2330 | } |
| 2331 | Handle<Map> map = instr->hydrogen()->types()->last(); |
| 2332 | __ cmp(FieldOperand(object, HeapObject::kMapOffset), map); |
| 2333 | if (instr->hydrogen()->need_generic()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2334 | Label generic; |
| 2335 | __ j(not_equal, &generic, Label::kNear); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2336 | EmitLoadFieldOrConstantFunction(result, object, map, name); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2337 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2338 | __ bind(&generic); |
| 2339 | __ mov(ecx, name); |
| 2340 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2341 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2342 | } else { |
| 2343 | DeoptimizeIf(not_equal, instr->environment()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 2344 | EmitLoadFieldOrConstantFunction(result, object, map, name); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2345 | } |
| 2346 | __ bind(&done); |
| 2347 | } |
| 2348 | } |
| 2349 | |
| 2350 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2351 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2352 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2353 | ASSERT(ToRegister(instr->object()).is(eax)); |
| 2354 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 2355 | |
| 2356 | __ mov(ecx, instr->name()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2357 | Handle<Code> ic = isolate()->builtins()->LoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2358 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2359 | } |
| 2360 | |
| 2361 | |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2362 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 2363 | Register function = ToRegister(instr->function()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2364 | Register temp = ToRegister(instr->TempAt(0)); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2365 | Register result = ToRegister(instr->result()); |
| 2366 | |
| 2367 | // Check that the function really is a function. |
| 2368 | __ CmpObjectType(function, JS_FUNCTION_TYPE, result); |
| 2369 | DeoptimizeIf(not_equal, instr->environment()); |
| 2370 | |
| 2371 | // Check whether the function has an instance prototype. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2372 | Label non_instance; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2373 | __ test_b(FieldOperand(result, Map::kBitFieldOffset), |
| 2374 | 1 << Map::kHasNonInstancePrototype); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2375 | __ j(not_zero, &non_instance, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2376 | |
| 2377 | // Get the prototype or initial map from the function. |
| 2378 | __ mov(result, |
| 2379 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 2380 | |
| 2381 | // Check that the function has a prototype or an initial map. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2382 | __ cmp(Operand(result), Immediate(factory()->the_hole_value())); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2383 | DeoptimizeIf(equal, instr->environment()); |
| 2384 | |
| 2385 | // 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] | 2386 | Label done; |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2387 | __ CmpObjectType(result, MAP_TYPE, temp); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2388 | __ j(not_equal, &done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2389 | |
| 2390 | // Get the prototype from the initial map. |
| 2391 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2392 | __ jmp(&done, Label::kNear); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 2393 | |
| 2394 | // Non-instance prototype: Fetch prototype from constructor field |
| 2395 | // in the function's map. |
| 2396 | __ bind(&non_instance); |
| 2397 | __ mov(result, FieldOperand(result, Map::kConstructorOffset)); |
| 2398 | |
| 2399 | // All done. |
| 2400 | __ bind(&done); |
| 2401 | } |
| 2402 | |
| 2403 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2404 | void LCodeGen::DoLoadElements(LLoadElements* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2405 | Register result = ToRegister(instr->result()); |
| 2406 | Register input = ToRegister(instr->InputAt(0)); |
| 2407 | __ mov(result, FieldOperand(input, JSObject::kElementsOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2408 | if (FLAG_debug_code) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2409 | Label done, ok, fail; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2410 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2411 | Immediate(factory()->fixed_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2412 | __ j(equal, &done, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2413 | __ cmp(FieldOperand(result, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2414 | Immediate(factory()->fixed_cow_array_map())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2415 | __ j(equal, &done, Label::kNear); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2416 | Register temp((result.is(eax)) ? ebx : eax); |
| 2417 | __ push(temp); |
| 2418 | __ mov(temp, FieldOperand(result, HeapObject::kMapOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2419 | __ movzx_b(temp, FieldOperand(temp, Map::kBitField2Offset)); |
| 2420 | __ and_(temp, Map::kElementsKindMask); |
| 2421 | __ shr(temp, Map::kElementsKindShift); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2422 | __ cmp(temp, FAST_ELEMENTS); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2423 | __ j(equal, &ok, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2424 | __ cmp(temp, FIRST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2425 | __ j(less, &fail, Label::kNear); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2426 | __ cmp(temp, LAST_EXTERNAL_ARRAY_ELEMENTS_KIND); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2427 | __ j(less_equal, &ok, Label::kNear); |
| 2428 | __ bind(&fail); |
| 2429 | __ Abort("Check for fast or external elements failed."); |
| 2430 | __ bind(&ok); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2431 | __ pop(temp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2432 | __ bind(&done); |
| 2433 | } |
| 2434 | } |
| 2435 | |
| 2436 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2437 | void LCodeGen::DoLoadExternalArrayPointer( |
| 2438 | LLoadExternalArrayPointer* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2439 | Register result = ToRegister(instr->result()); |
| 2440 | Register input = ToRegister(instr->InputAt(0)); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2441 | __ mov(result, FieldOperand(input, |
| 2442 | ExternalArray::kExternalPointerOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2443 | } |
| 2444 | |
| 2445 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2446 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 2447 | Register arguments = ToRegister(instr->arguments()); |
| 2448 | Register length = ToRegister(instr->length()); |
| 2449 | Operand index = ToOperand(instr->index()); |
| 2450 | Register result = ToRegister(instr->result()); |
| 2451 | |
| 2452 | __ sub(length, index); |
| 2453 | DeoptimizeIf(below_equal, instr->environment()); |
| 2454 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2455 | // There are two words between the frame pointer and the last argument. |
| 2456 | // Subtracting from length accounts for one of them add one more. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2457 | __ mov(result, Operand(arguments, length, times_4, kPointerSize)); |
| 2458 | } |
| 2459 | |
| 2460 | |
| 2461 | void LCodeGen::DoLoadKeyedFastElement(LLoadKeyedFastElement* instr) { |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2462 | Register result = ToRegister(instr->result()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2463 | |
| 2464 | // Load the result. |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2465 | __ mov(result, |
| 2466 | BuildFastArrayOperand(instr->elements(), instr->key(), |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2467 | FAST_ELEMENTS, |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2468 | FixedArray::kHeaderSize - kHeapObjectTag)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2469 | |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 2470 | // Check for the hole value. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2471 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2472 | __ cmp(result, factory()->the_hole_value()); |
| 2473 | DeoptimizeIf(equal, instr->environment()); |
| 2474 | } |
| 2475 | } |
| 2476 | |
| 2477 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2478 | void LCodeGen::DoLoadKeyedFastDoubleElement( |
| 2479 | LLoadKeyedFastDoubleElement* instr) { |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2480 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 2481 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2482 | int offset = FixedDoubleArray::kHeaderSize - kHeapObjectTag + |
| 2483 | sizeof(kHoleNanLower32); |
| 2484 | Operand hole_check_operand = BuildFastArrayOperand( |
| 2485 | instr->elements(), instr->key(), |
| 2486 | FAST_DOUBLE_ELEMENTS, |
| 2487 | offset); |
| 2488 | __ cmp(hole_check_operand, Immediate(kHoleNanUpper32)); |
| 2489 | DeoptimizeIf(equal, instr->environment()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2490 | |
| 2491 | Operand double_load_operand = BuildFastArrayOperand( |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2492 | instr->elements(), instr->key(), FAST_DOUBLE_ELEMENTS, |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2493 | FixedDoubleArray::kHeaderSize - kHeapObjectTag); |
| 2494 | __ movdbl(result, double_load_operand); |
| 2495 | } |
| 2496 | |
| 2497 | |
| 2498 | Operand LCodeGen::BuildFastArrayOperand( |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2499 | LOperand* elements_pointer, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2500 | LOperand* key, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2501 | ElementsKind elements_kind, |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2502 | uint32_t offset) { |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2503 | Register elements_pointer_reg = ToRegister(elements_pointer); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2504 | int shift_size = ElementsKindToShiftSize(elements_kind); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2505 | if (key->IsConstantOperand()) { |
| 2506 | int constant_value = ToInteger32(LConstantOperand::cast(key)); |
| 2507 | if (constant_value & 0xF0000000) { |
| 2508 | Abort("array index constant value too big"); |
| 2509 | } |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2510 | return Operand(elements_pointer_reg, |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2511 | constant_value * (1 << shift_size) + offset); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2512 | } else { |
| 2513 | ScaleFactor scale_factor = static_cast<ScaleFactor>(shift_size); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 2514 | return Operand(elements_pointer_reg, ToRegister(key), scale_factor, offset); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2515 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2516 | } |
| 2517 | |
| 2518 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2519 | void LCodeGen::DoLoadKeyedSpecializedArrayElement( |
| 2520 | LLoadKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2521 | ElementsKind elements_kind = instr->elements_kind(); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 2522 | Operand operand(BuildFastArrayOperand(instr->external_pointer(), |
| 2523 | instr->key(), elements_kind, 0)); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2524 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2525 | XMMRegister result(ToDoubleRegister(instr->result())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2526 | __ movss(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2527 | __ cvtss2sd(result, result); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2528 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2529 | __ movdbl(ToDoubleRegister(instr->result()), operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2530 | } else { |
| 2531 | Register result(ToRegister(instr->result())); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2532 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2533 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2534 | __ movsx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2535 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2536 | case EXTERNAL_PIXEL_ELEMENTS: |
| 2537 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2538 | __ movzx_b(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2539 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2540 | case EXTERNAL_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2541 | __ movsx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2542 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2543 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2544 | __ movzx_w(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2545 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2546 | case EXTERNAL_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2547 | __ mov(result, operand); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2548 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2549 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2550 | __ mov(result, operand); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2551 | __ test(result, Operand(result)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2552 | // TODO(danno): we could be more clever here, perhaps having a special |
| 2553 | // version of the stub that detects if the overflow case actually |
| 2554 | // happens, and generate code that returns a double rather than int. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2555 | DeoptimizeIf(negative, instr->environment()); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2556 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2557 | case EXTERNAL_FLOAT_ELEMENTS: |
| 2558 | case EXTERNAL_DOUBLE_ELEMENTS: |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2559 | case FAST_SMI_ONLY_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 2560 | case FAST_ELEMENTS: |
| 2561 | case FAST_DOUBLE_ELEMENTS: |
| 2562 | case DICTIONARY_ELEMENTS: |
| 2563 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2564 | UNREACHABLE(); |
| 2565 | break; |
| 2566 | } |
| 2567 | } |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2568 | } |
| 2569 | |
| 2570 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2571 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2572 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2573 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 2574 | ASSERT(ToRegister(instr->key()).is(eax)); |
| 2575 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 2576 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2577 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2578 | } |
| 2579 | |
| 2580 | |
| 2581 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 2582 | Register result = ToRegister(instr->result()); |
| 2583 | |
| 2584 | // Check for arguments adapter frame. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2585 | Label done, adapted; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2586 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2587 | __ mov(result, Operand(result, StandardFrameConstants::kContextOffset)); |
| 2588 | __ cmp(Operand(result), |
| 2589 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2590 | __ j(equal, &adapted, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2591 | |
| 2592 | // No arguments adaptor frame. |
| 2593 | __ mov(result, Operand(ebp)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2594 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2595 | |
| 2596 | // Arguments adaptor frame present. |
| 2597 | __ bind(&adapted); |
| 2598 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2599 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2600 | // Result is the frame pointer for the frame if not adapted and for the real |
| 2601 | // frame below the adaptor frame if adapted. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2602 | __ bind(&done); |
| 2603 | } |
| 2604 | |
| 2605 | |
| 2606 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2607 | Operand elem = ToOperand(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2608 | Register result = ToRegister(instr->result()); |
| 2609 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2610 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2611 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2612 | // If no arguments adaptor frame the number of arguments is fixed. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2613 | __ cmp(ebp, elem); |
| 2614 | __ mov(result, Immediate(scope()->num_parameters())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2615 | __ j(equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2616 | |
| 2617 | // Arguments adaptor frame present. Get argument length from there. |
| 2618 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2619 | __ mov(result, Operand(result, |
| 2620 | ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2621 | __ SmiUntag(result); |
| 2622 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 2623 | // Argument length is in result register. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2624 | __ bind(&done); |
| 2625 | } |
| 2626 | |
| 2627 | |
| 2628 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 2629 | Register receiver = ToRegister(instr->receiver()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2630 | Register function = ToRegister(instr->function()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2631 | Register length = ToRegister(instr->length()); |
| 2632 | Register elements = ToRegister(instr->elements()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2633 | Register scratch = ToRegister(instr->TempAt(0)); |
| 2634 | ASSERT(receiver.is(eax)); // Used for parameter count. |
| 2635 | ASSERT(function.is(edi)); // Required by InvokeFunction. |
| 2636 | ASSERT(ToRegister(instr->result()).is(eax)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2637 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2638 | // If the receiver is null or undefined, we have to pass the global |
| 2639 | // object as a receiver to normal functions. Values have to be |
| 2640 | // passed unchanged to builtins and strict-mode functions. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2641 | Label global_object, receiver_ok; |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2642 | |
| 2643 | // Do not transform the receiver to object for strict mode |
| 2644 | // functions. |
| 2645 | __ mov(scratch, |
| 2646 | FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 2647 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
| 2648 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 2649 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2650 | |
| 2651 | // Do not transform the receiver to object for builtins. |
| 2652 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
| 2653 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
| 2654 | __ j(not_equal, &receiver_ok, Label::kNear); |
| 2655 | |
| 2656 | // Normal function. Replace undefined or null with global receiver. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2657 | __ cmp(receiver, factory()->null_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2658 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2659 | __ cmp(receiver, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2660 | __ j(equal, &global_object, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2661 | |
| 2662 | // The receiver should be a JS object. |
| 2663 | __ test(receiver, Immediate(kSmiTagMask)); |
| 2664 | DeoptimizeIf(equal, instr->environment()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2665 | __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2666 | DeoptimizeIf(below, instr->environment()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2667 | __ jmp(&receiver_ok, Label::kNear); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2668 | |
| 2669 | __ bind(&global_object); |
| 2670 | // TODO(kmillikin): We have a hydrogen value for the global object. See |
| 2671 | // if it's better to use it than to explicitly fetch it from the context |
| 2672 | // here. |
| 2673 | __ mov(receiver, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2674 | __ mov(receiver, ContextOperand(receiver, Context::GLOBAL_INDEX)); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2675 | __ mov(receiver, |
| 2676 | FieldOperand(receiver, JSGlobalObject::kGlobalReceiverOffset)); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2677 | __ bind(&receiver_ok); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2678 | |
| 2679 | // Copy the arguments to this function possibly from the |
| 2680 | // adaptor frame below it. |
| 2681 | const uint32_t kArgumentsLimit = 1 * KB; |
| 2682 | __ cmp(length, kArgumentsLimit); |
| 2683 | DeoptimizeIf(above, instr->environment()); |
| 2684 | |
| 2685 | __ push(receiver); |
| 2686 | __ mov(receiver, length); |
| 2687 | |
| 2688 | // Loop through the arguments pushing them onto the execution |
| 2689 | // stack. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2690 | Label invoke, loop; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2691 | // length is a small non-negative integer, due to the test above. |
| 2692 | __ test(length, Operand(length)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2693 | __ j(zero, &invoke, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2694 | __ bind(&loop); |
| 2695 | __ push(Operand(elements, length, times_pointer_size, 1 * kPointerSize)); |
| 2696 | __ dec(length); |
| 2697 | __ j(not_zero, &loop); |
| 2698 | |
| 2699 | // Invoke the function. |
| 2700 | __ bind(&invoke); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 2701 | ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment()); |
| 2702 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 2703 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 2704 | SafepointGenerator safepoint_generator( |
| 2705 | this, pointers, Safepoint::kLazyDeopt); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2706 | ParameterCount actual(eax); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2707 | __ InvokeFunction(function, actual, CALL_FUNCTION, |
| 2708 | safepoint_generator, CALL_AS_METHOD); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2709 | } |
| 2710 | |
| 2711 | |
| 2712 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 2713 | LOperand* argument = instr->InputAt(0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2714 | EmitPushTaggedOperand(argument); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2715 | } |
| 2716 | |
| 2717 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2718 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 2719 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2720 | __ LoadHeapObject(result, instr->hydrogen()->closure()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 2721 | } |
| 2722 | |
| 2723 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2724 | void LCodeGen::DoContext(LContext* instr) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2725 | Register result = ToRegister(instr->result()); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2726 | __ mov(result, Operand(ebp, StandardFrameConstants::kContextOffset)); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2727 | } |
| 2728 | |
| 2729 | |
| 2730 | void LCodeGen::DoOuterContext(LOuterContext* instr) { |
| 2731 | Register context = ToRegister(instr->context()); |
| 2732 | Register result = ToRegister(instr->result()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2733 | __ mov(result, |
| 2734 | Operand(context, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2735 | } |
| 2736 | |
| 2737 | |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2738 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
| 2739 | ASSERT(ToRegister(instr->InputAt(0)).is(esi)); |
| 2740 | __ push(esi); // The context is the first argument. |
| 2741 | __ push(Immediate(instr->hydrogen()->pairs())); |
| 2742 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags()))); |
| 2743 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 2744 | } |
| 2745 | |
| 2746 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2747 | void LCodeGen::DoGlobalObject(LGlobalObject* instr) { |
| 2748 | Register context = ToRegister(instr->context()); |
| 2749 | Register result = ToRegister(instr->result()); |
| 2750 | __ mov(result, Operand(context, Context::SlotOffset(Context::GLOBAL_INDEX))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2751 | } |
| 2752 | |
| 2753 | |
| 2754 | void LCodeGen::DoGlobalReceiver(LGlobalReceiver* instr) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2755 | Register global = ToRegister(instr->global()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2756 | Register result = ToRegister(instr->result()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2757 | __ mov(result, FieldOperand(global, GlobalObject::kGlobalReceiverOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2758 | } |
| 2759 | |
| 2760 | |
| 2761 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
| 2762 | int arity, |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2763 | LInstruction* instr, |
| 2764 | CallKind call_kind) { |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2765 | bool can_invoke_directly = !function->NeedsArgumentsAdaption() || |
| 2766 | function->shared()->formal_parameter_count() == arity; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2767 | |
| 2768 | LPointerMap* pointers = instr->pointer_map(); |
| 2769 | RecordPosition(pointers->position()); |
| 2770 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2771 | if (can_invoke_directly) { |
| 2772 | __ LoadHeapObject(edi, function); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2773 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 2774 | // Change context if needed. |
| 2775 | bool change_context = |
| 2776 | (info()->closure()->context() != function->context()) || |
| 2777 | scope()->contains_with() || |
| 2778 | (scope()->num_heap_slots() > 0); |
| 2779 | |
| 2780 | if (change_context) { |
| 2781 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 2782 | } else { |
| 2783 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2784 | } |
| 2785 | |
| 2786 | // Set eax to arguments count if adaption is not needed. Assumes that eax |
| 2787 | // is available to write to at this point. |
| 2788 | if (!function->NeedsArgumentsAdaption()) { |
| 2789 | __ mov(eax, arity); |
| 2790 | } |
| 2791 | |
| 2792 | // Invoke function directly. |
| 2793 | __ SetCallKind(ecx, call_kind); |
| 2794 | if (*function == *info()->closure()) { |
| 2795 | __ CallSelf(); |
| 2796 | } else { |
| 2797 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 2798 | } |
| 2799 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 2800 | } else { |
| 2801 | // We need to adapt arguments. |
| 2802 | SafepointGenerator generator( |
| 2803 | this, pointers, Safepoint::kLazyDeopt); |
| 2804 | ParameterCount count(arity); |
| 2805 | __ InvokeFunction(function, count, CALL_FUNCTION, generator, call_kind); |
| 2806 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2807 | } |
| 2808 | |
| 2809 | |
| 2810 | void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) { |
| 2811 | ASSERT(ToRegister(instr->result()).is(eax)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2812 | CallKnownFunction(instr->function(), |
| 2813 | instr->arity(), |
| 2814 | instr, |
| 2815 | CALL_AS_METHOD); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2816 | } |
| 2817 | |
| 2818 | |
| 2819 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2820 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2821 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2822 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2823 | DeoptimizeIf(not_equal, instr->environment()); |
| 2824 | |
| 2825 | Label done; |
| 2826 | Register tmp = input_reg.is(eax) ? ecx : eax; |
| 2827 | Register tmp2 = tmp.is(ecx) ? edx : input_reg.is(ecx) ? edx : ecx; |
| 2828 | |
| 2829 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2830 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2831 | |
| 2832 | Label negative; |
| 2833 | __ mov(tmp, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2834 | // Check the sign of the argument. If the argument is positive, just |
| 2835 | // return it. We do not need to patch the stack since |input| and |
| 2836 | // |result| are the same register and |input| will be restored |
| 2837 | // unchanged by popping safepoint registers. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2838 | __ test(tmp, Immediate(HeapNumber::kSignMask)); |
| 2839 | __ j(not_zero, &negative); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2840 | __ jmp(&done); |
| 2841 | |
| 2842 | __ bind(&negative); |
| 2843 | |
| 2844 | Label allocated, slow; |
| 2845 | __ AllocateHeapNumber(tmp, tmp2, no_reg, &slow); |
| 2846 | __ jmp(&allocated); |
| 2847 | |
| 2848 | // Slow case: Call the runtime system to do the number allocation. |
| 2849 | __ bind(&slow); |
| 2850 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2851 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, |
| 2852 | instr, instr->context()); |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 2853 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2854 | // Set the pointer to the new heap number in tmp. |
| 2855 | if (!tmp.is(eax)) __ mov(tmp, eax); |
| 2856 | |
| 2857 | // Restore input_reg after call to runtime. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2858 | __ LoadFromSafepointRegisterSlot(input_reg, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2859 | |
| 2860 | __ bind(&allocated); |
| 2861 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 2862 | __ and_(tmp2, ~HeapNumber::kSignMask); |
| 2863 | __ mov(FieldOperand(tmp, HeapNumber::kExponentOffset), tmp2); |
| 2864 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kMantissaOffset)); |
| 2865 | __ mov(FieldOperand(tmp, HeapNumber::kMantissaOffset), tmp2); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2866 | __ StoreToSafepointRegisterSlot(input_reg, tmp); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2867 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2868 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2869 | } |
| 2870 | |
| 2871 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2872 | void LCodeGen::EmitIntegerMathAbs(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2873 | Register input_reg = ToRegister(instr->value()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2874 | __ test(input_reg, Operand(input_reg)); |
| 2875 | Label is_positive; |
| 2876 | __ j(not_sign, &is_positive); |
| 2877 | __ neg(input_reg); |
| 2878 | __ test(input_reg, Operand(input_reg)); |
| 2879 | DeoptimizeIf(negative, instr->environment()); |
| 2880 | __ bind(&is_positive); |
| 2881 | } |
| 2882 | |
| 2883 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2884 | void LCodeGen::DoMathAbs(LUnaryMathOperation* instr) { |
| 2885 | // Class for deferred case. |
| 2886 | class DeferredMathAbsTaggedHeapNumber: public LDeferredCode { |
| 2887 | public: |
| 2888 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, |
| 2889 | LUnaryMathOperation* instr) |
| 2890 | : LDeferredCode(codegen), instr_(instr) { } |
| 2891 | virtual void Generate() { |
| 2892 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 2893 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2894 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2895 | private: |
| 2896 | LUnaryMathOperation* instr_; |
| 2897 | }; |
| 2898 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2899 | ASSERT(instr->value()->Equals(instr->result())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2900 | Representation r = instr->hydrogen()->value()->representation(); |
| 2901 | |
| 2902 | if (r.IsDouble()) { |
| 2903 | XMMRegister scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2904 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 2905 | __ xorps(scratch, scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2906 | __ subsd(scratch, input_reg); |
| 2907 | __ pand(input_reg, scratch); |
| 2908 | } else if (r.IsInteger32()) { |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2909 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2910 | } else { // Tagged case. |
| 2911 | DeferredMathAbsTaggedHeapNumber* deferred = |
| 2912 | new DeferredMathAbsTaggedHeapNumber(this, instr); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2913 | Register input_reg = ToRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2914 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2915 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2916 | EmitIntegerMathAbs(instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2917 | __ bind(deferred->exit()); |
| 2918 | } |
| 2919 | } |
| 2920 | |
| 2921 | |
| 2922 | void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { |
| 2923 | XMMRegister xmm_scratch = xmm0; |
| 2924 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2925 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2926 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 2927 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 2928 | CpuFeatures::Scope scope(SSE4_1); |
| 2929 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 2930 | // Deoptimize on negative zero. |
| 2931 | Label non_zero; |
| 2932 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 2933 | __ ucomisd(input_reg, xmm_scratch); |
| 2934 | __ j(not_equal, &non_zero, Label::kNear); |
| 2935 | __ movmskpd(output_reg, input_reg); |
| 2936 | __ test(output_reg, Immediate(1)); |
| 2937 | DeoptimizeIf(not_zero, instr->environment()); |
| 2938 | __ bind(&non_zero); |
| 2939 | } |
| 2940 | __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
| 2941 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
| 2942 | // Overflow is signalled with minint. |
| 2943 | __ cmp(output_reg, 0x80000000u); |
| 2944 | DeoptimizeIf(equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2945 | } else { |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 2946 | Label done; |
| 2947 | // Deoptimize on negative numbers. |
| 2948 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 2949 | __ ucomisd(input_reg, xmm_scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2950 | DeoptimizeIf(below, instr->environment()); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 2951 | |
| 2952 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 2953 | // Check for negative zero. |
| 2954 | Label positive_sign; |
| 2955 | __ j(above, &positive_sign, Label::kNear); |
| 2956 | __ movmskpd(output_reg, input_reg); |
| 2957 | __ test(output_reg, Immediate(1)); |
| 2958 | DeoptimizeIf(not_zero, instr->environment()); |
| 2959 | __ Set(output_reg, Immediate(0)); |
| 2960 | __ jmp(&done, Label::kNear); |
| 2961 | __ bind(&positive_sign); |
| 2962 | } |
| 2963 | |
| 2964 | // Use truncating instruction (OK because input is positive). |
| 2965 | __ cvttsd2si(output_reg, Operand(input_reg)); |
| 2966 | |
| 2967 | // Overflow is signalled with minint. |
| 2968 | __ cmp(output_reg, 0x80000000u); |
| 2969 | DeoptimizeIf(equal, instr->environment()); |
| 2970 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2971 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2972 | } |
| 2973 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2974 | void LCodeGen::DoMathRound(LUnaryMathOperation* instr) { |
| 2975 | XMMRegister xmm_scratch = xmm0; |
| 2976 | Register output_reg = ToRegister(instr->result()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 2977 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2978 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2979 | Label below_half, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2980 | // xmm_scratch = 0.5 |
| 2981 | ExternalReference one_half = ExternalReference::address_of_one_half(); |
| 2982 | __ movdbl(xmm_scratch, Operand::StaticVariable(one_half)); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2983 | __ ucomisd(xmm_scratch, input_reg); |
| 2984 | __ j(above, &below_half); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2985 | // xmm_scratch = input + 0.5 |
| 2986 | __ addsd(xmm_scratch, input_reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2987 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2988 | // Compute Math.floor(value + 0.5). |
| 2989 | // Use truncating instruction (OK because input is positive). |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2990 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2991 | |
| 2992 | // Overflow is signalled with minint. |
| 2993 | __ cmp(output_reg, 0x80000000u); |
| 2994 | DeoptimizeIf(equal, instr->environment()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2995 | __ jmp(&done); |
| 2996 | |
| 2997 | __ bind(&below_half); |
| 2998 | |
| 2999 | // We return 0 for the input range [+0, 0.5[, or [-0.5, 0.5[ if |
| 3000 | // we can ignore the difference between a result of -0 and +0. |
| 3001 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3002 | // If the sign is positive, we return +0. |
| 3003 | __ movmskpd(output_reg, input_reg); |
| 3004 | __ test(output_reg, Immediate(1)); |
| 3005 | DeoptimizeIf(not_zero, instr->environment()); |
| 3006 | } else { |
| 3007 | // If the input is >= -0.5, we return +0. |
| 3008 | __ mov(output_reg, Immediate(0xBF000000)); |
| 3009 | __ movd(xmm_scratch, Operand(output_reg)); |
| 3010 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3011 | __ ucomisd(input_reg, xmm_scratch); |
| 3012 | DeoptimizeIf(below, instr->environment()); |
| 3013 | } |
| 3014 | __ Set(output_reg, Immediate(0)); |
| 3015 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3016 | } |
| 3017 | |
| 3018 | |
| 3019 | void LCodeGen::DoMathSqrt(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3020 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3021 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
| 3022 | __ sqrtsd(input_reg, input_reg); |
| 3023 | } |
| 3024 | |
| 3025 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3026 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3027 | XMMRegister xmm_scratch = xmm0; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3028 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3029 | Register scratch = ToRegister(instr->temp()); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3030 | ASSERT(ToDoubleRegister(instr->result()).is(input_reg)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3031 | |
| 3032 | // Note that according to ECMA-262 15.8.2.13: |
| 3033 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3034 | // Math.sqrt(-Infinity) == NaN |
| 3035 | Label done, sqrt; |
| 3036 | // Check base for -Infinity. According to IEEE-754, single-precision |
| 3037 | // -Infinity has the highest 9 bits set and the lowest 23 bits cleared. |
| 3038 | __ mov(scratch, 0xFF800000); |
| 3039 | __ movd(xmm_scratch, scratch); |
| 3040 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3041 | __ ucomisd(input_reg, xmm_scratch); |
| 3042 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 3043 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 3044 | __ j(not_equal, &sqrt, Label::kNear); |
| 3045 | __ j(carry, &sqrt, Label::kNear); |
| 3046 | // If input is -Infinity, return Infinity. |
| 3047 | __ xorps(input_reg, input_reg); |
| 3048 | __ subsd(input_reg, xmm_scratch); |
| 3049 | __ jmp(&done, Label::kNear); |
| 3050 | |
| 3051 | // Square root. |
| 3052 | __ bind(&sqrt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3053 | __ xorps(xmm_scratch, xmm_scratch); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 3054 | __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3055 | __ sqrtsd(input_reg, input_reg); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3056 | __ bind(&done); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3057 | } |
| 3058 | |
| 3059 | |
| 3060 | void LCodeGen::DoPower(LPower* instr) { |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3061 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3062 | // Having marked this as a call, we can use any registers. |
| 3063 | // Just make sure that the input/output registers are the expected ones. |
| 3064 | ASSERT(!instr->InputAt(1)->IsDoubleRegister() || |
| 3065 | ToDoubleRegister(instr->InputAt(1)).is(xmm1)); |
| 3066 | ASSERT(!instr->InputAt(1)->IsRegister() || |
| 3067 | ToRegister(instr->InputAt(1)).is(eax)); |
| 3068 | ASSERT(ToDoubleRegister(instr->InputAt(0)).is(xmm2)); |
| 3069 | ASSERT(ToDoubleRegister(instr->result()).is(xmm3)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3070 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3071 | if (exponent_type.IsTagged()) { |
| 3072 | Label no_deopt; |
| 3073 | __ JumpIfSmi(eax, &no_deopt); |
| 3074 | __ CmpObjectType(eax, HEAP_NUMBER_TYPE, ecx); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3075 | DeoptimizeIf(not_equal, instr->environment()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3076 | __ bind(&no_deopt); |
| 3077 | MathPowStub stub(MathPowStub::TAGGED); |
| 3078 | __ CallStub(&stub); |
| 3079 | } else if (exponent_type.IsInteger32()) { |
| 3080 | MathPowStub stub(MathPowStub::INTEGER); |
| 3081 | __ CallStub(&stub); |
| 3082 | } else { |
| 3083 | ASSERT(exponent_type.IsDouble()); |
| 3084 | MathPowStub stub(MathPowStub::DOUBLE); |
| 3085 | __ CallStub(&stub); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3086 | } |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3087 | } |
| 3088 | |
| 3089 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3090 | void LCodeGen::DoRandom(LRandom* instr) { |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3091 | class DeferredDoRandom: public LDeferredCode { |
| 3092 | public: |
| 3093 | DeferredDoRandom(LCodeGen* codegen, LRandom* instr) |
| 3094 | : LDeferredCode(codegen), instr_(instr) { } |
| 3095 | virtual void Generate() { codegen()->DoDeferredRandom(instr_); } |
| 3096 | virtual LInstruction* instr() { return instr_; } |
| 3097 | private: |
| 3098 | LRandom* instr_; |
| 3099 | }; |
| 3100 | |
| 3101 | DeferredDoRandom* deferred = new DeferredDoRandom(this, instr); |
| 3102 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3103 | // Having marked this instruction as a call we can use any |
| 3104 | // registers. |
| 3105 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3106 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3107 | // Assert that the register size is indeed the size of each seed. |
| 3108 | static const int kSeedSize = sizeof(uint32_t); |
| 3109 | STATIC_ASSERT(kPointerSize == kSeedSize); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3110 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3111 | __ mov(eax, FieldOperand(eax, GlobalObject::kGlobalContextOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3112 | static const int kRandomSeedOffset = |
| 3113 | FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; |
| 3114 | __ mov(ebx, FieldOperand(eax, kRandomSeedOffset)); |
| 3115 | // ebx: FixedArray of the global context's random seeds |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3116 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3117 | // Load state[0]. |
| 3118 | __ mov(ecx, FieldOperand(ebx, ByteArray::kHeaderSize)); |
| 3119 | // If state[0] == 0, call runtime to initialize seeds. |
| 3120 | __ test(ecx, ecx); |
| 3121 | __ j(zero, deferred->entry()); |
| 3122 | // Load state[1]. |
| 3123 | __ mov(eax, FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize)); |
| 3124 | // ecx: state[0] |
| 3125 | // eax: state[1] |
| 3126 | |
| 3127 | // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) |
| 3128 | __ movzx_w(edx, ecx); |
| 3129 | __ imul(edx, edx, 18273); |
| 3130 | __ shr(ecx, 16); |
| 3131 | __ add(ecx, edx); |
| 3132 | // Save state[0]. |
| 3133 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize), ecx); |
| 3134 | |
| 3135 | // state[1] = 36969 * (state[1] & 0xFFFF) + (state[1] >> 16) |
| 3136 | __ movzx_w(edx, eax); |
| 3137 | __ imul(edx, edx, 36969); |
| 3138 | __ shr(eax, 16); |
| 3139 | __ add(eax, edx); |
| 3140 | // Save state[1]. |
| 3141 | __ mov(FieldOperand(ebx, ByteArray::kHeaderSize + kSeedSize), eax); |
| 3142 | |
| 3143 | // Random bit pattern = (state[0] << 14) + (state[1] & 0x3FFFF) |
| 3144 | __ shl(ecx, 14); |
| 3145 | __ and_(eax, Immediate(0x3FFFF)); |
| 3146 | __ add(eax, ecx); |
| 3147 | |
| 3148 | __ bind(deferred->exit()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3149 | // Convert 32 random bits in eax to 0.(32 random bits) in a double |
| 3150 | // by computing: |
| 3151 | // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 3152 | __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single. |
| 3153 | __ movd(xmm2, ebx); |
| 3154 | __ movd(xmm1, eax); |
| 3155 | __ cvtss2sd(xmm2, xmm2); |
| 3156 | __ xorps(xmm1, xmm2); |
| 3157 | __ subsd(xmm1, xmm2); |
| 3158 | } |
| 3159 | |
| 3160 | |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 3161 | void LCodeGen::DoDeferredRandom(LRandom* instr) { |
| 3162 | __ PrepareCallCFunction(1, ebx); |
| 3163 | __ mov(Operand(esp, 0), eax); |
| 3164 | __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1); |
| 3165 | // Return value is in eax. |
| 3166 | } |
| 3167 | |
| 3168 | |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3169 | void LCodeGen::DoMathLog(LUnaryMathOperation* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3170 | ASSERT(instr->value()->Equals(instr->result())); |
| 3171 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3172 | Label positive, done, zero; |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 3173 | __ xorps(xmm0, xmm0); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3174 | __ ucomisd(input_reg, xmm0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3175 | __ j(above, &positive, Label::kNear); |
| 3176 | __ j(equal, &zero, Label::kNear); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 3177 | ExternalReference nan = |
| 3178 | ExternalReference::address_of_canonical_non_hole_nan(); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3179 | __ movdbl(input_reg, Operand::StaticVariable(nan)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3180 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3181 | __ bind(&zero); |
| 3182 | __ push(Immediate(0xFFF00000)); |
| 3183 | __ push(Immediate(0)); |
| 3184 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3185 | __ add(Operand(esp), Immediate(kDoubleSize)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3186 | __ jmp(&done, Label::kNear); |
vegorov@chromium.org | 74f333b | 2011-04-06 11:17:46 +0000 | [diff] [blame] | 3187 | __ bind(&positive); |
| 3188 | __ fldln2(); |
| 3189 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 3190 | __ movdbl(Operand(esp, 0), input_reg); |
| 3191 | __ fld_d(Operand(esp, 0)); |
| 3192 | __ fyl2x(); |
| 3193 | __ fstp_d(Operand(esp, 0)); |
| 3194 | __ movdbl(input_reg, Operand(esp, 0)); |
| 3195 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3196 | __ bind(&done); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3197 | } |
| 3198 | |
| 3199 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3200 | void LCodeGen::DoMathTan(LUnaryMathOperation* instr) { |
| 3201 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3202 | TranscendentalCacheStub stub(TranscendentalCache::TAN, |
| 3203 | TranscendentalCacheStub::UNTAGGED); |
| 3204 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
| 3205 | } |
| 3206 | |
| 3207 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3208 | void LCodeGen::DoMathCos(LUnaryMathOperation* instr) { |
| 3209 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3210 | TranscendentalCacheStub stub(TranscendentalCache::COS, |
| 3211 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3212 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3213 | } |
| 3214 | |
| 3215 | |
| 3216 | void LCodeGen::DoMathSin(LUnaryMathOperation* instr) { |
| 3217 | ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); |
| 3218 | TranscendentalCacheStub stub(TranscendentalCache::SIN, |
| 3219 | TranscendentalCacheStub::UNTAGGED); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3220 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3221 | } |
| 3222 | |
| 3223 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3224 | void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) { |
| 3225 | switch (instr->op()) { |
| 3226 | case kMathAbs: |
| 3227 | DoMathAbs(instr); |
| 3228 | break; |
| 3229 | case kMathFloor: |
| 3230 | DoMathFloor(instr); |
| 3231 | break; |
| 3232 | case kMathRound: |
| 3233 | DoMathRound(instr); |
| 3234 | break; |
| 3235 | case kMathSqrt: |
| 3236 | DoMathSqrt(instr); |
| 3237 | break; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3238 | case kMathCos: |
| 3239 | DoMathCos(instr); |
| 3240 | break; |
| 3241 | case kMathSin: |
| 3242 | DoMathSin(instr); |
| 3243 | break; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3244 | case kMathTan: |
| 3245 | DoMathTan(instr); |
| 3246 | break; |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 3247 | case kMathLog: |
| 3248 | DoMathLog(instr); |
| 3249 | break; |
| 3250 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3251 | default: |
| 3252 | UNREACHABLE(); |
| 3253 | } |
| 3254 | } |
| 3255 | |
| 3256 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3257 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
| 3258 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3259 | ASSERT(ToRegister(instr->function()).is(edi)); |
| 3260 | ASSERT(instr->HasPointerMap()); |
| 3261 | ASSERT(instr->HasDeoptimizationEnvironment()); |
| 3262 | LPointerMap* pointers = instr->pointer_map(); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3263 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3264 | SafepointGenerator generator( |
| 3265 | this, pointers, Safepoint::kLazyDeopt); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3266 | ParameterCount count(instr->arity()); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 3267 | __ InvokeFunction(edi, count, CALL_FUNCTION, generator, CALL_AS_METHOD); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3268 | } |
| 3269 | |
| 3270 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3271 | void LCodeGen::DoCallKeyed(LCallKeyed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3272 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3273 | ASSERT(ToRegister(instr->key()).is(ecx)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3274 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3275 | |
| 3276 | int arity = instr->arity(); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3277 | Handle<Code> ic = |
| 3278 | isolate()->stub_cache()->ComputeKeyedCallInitialize(arity); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3279 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3280 | } |
| 3281 | |
| 3282 | |
| 3283 | void LCodeGen::DoCallNamed(LCallNamed* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3284 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3285 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3286 | |
| 3287 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3288 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
| 3289 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3290 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3291 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3292 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3293 | } |
| 3294 | |
| 3295 | |
| 3296 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3297 | ASSERT(ToRegister(instr->context()).is(esi)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 3298 | ASSERT(ToRegister(instr->function()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3299 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3300 | |
| 3301 | int arity = instr->arity(); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3302 | CallFunctionStub stub(arity, NO_CALL_FUNCTION_FLAGS); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3303 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3304 | } |
| 3305 | |
| 3306 | |
| 3307 | void LCodeGen::DoCallGlobal(LCallGlobal* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3308 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3309 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3310 | |
| 3311 | int arity = instr->arity(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3312 | RelocInfo::Mode mode = RelocInfo::CODE_TARGET_CONTEXT; |
| 3313 | Handle<Code> ic = |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 3314 | isolate()->stub_cache()->ComputeCallInitialize(arity, mode); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3315 | __ mov(ecx, instr->name()); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3316 | CallCode(ic, mode, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3317 | } |
| 3318 | |
| 3319 | |
| 3320 | void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) { |
| 3321 | ASSERT(ToRegister(instr->result()).is(eax)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3322 | CallKnownFunction(instr->target(), instr->arity(), instr, CALL_AS_FUNCTION); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3323 | } |
| 3324 | |
| 3325 | |
| 3326 | void LCodeGen::DoCallNew(LCallNew* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3327 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 3328 | ASSERT(ToRegister(instr->constructor()).is(edi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3329 | ASSERT(ToRegister(instr->result()).is(eax)); |
| 3330 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3331 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3332 | __ Set(eax, Immediate(instr->arity())); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3333 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3334 | } |
| 3335 | |
| 3336 | |
| 3337 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3338 | CallRuntime(instr->function(), instr->arity(), instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3339 | } |
| 3340 | |
| 3341 | |
| 3342 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
| 3343 | Register object = ToRegister(instr->object()); |
| 3344 | Register value = ToRegister(instr->value()); |
| 3345 | int offset = instr->offset(); |
| 3346 | |
| 3347 | if (!instr->transition().is_null()) { |
| 3348 | __ mov(FieldOperand(object, HeapObject::kMapOffset), instr->transition()); |
| 3349 | } |
| 3350 | |
| 3351 | // Do the store. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3352 | HType type = instr->hydrogen()->value()->type(); |
| 3353 | SmiCheck check_needed = |
| 3354 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3355 | if (instr->is_in_object()) { |
| 3356 | __ mov(FieldOperand(object, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3357 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3358 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3359 | // 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] | 3360 | __ RecordWriteField(object, |
| 3361 | offset, |
| 3362 | value, |
| 3363 | temp, |
| 3364 | kSaveFPRegs, |
| 3365 | EMIT_REMEMBERED_SET, |
| 3366 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3367 | } |
| 3368 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3369 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3370 | __ mov(temp, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 3371 | __ mov(FieldOperand(temp, offset), value); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3372 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3373 | // Update the write barrier for the properties array. |
| 3374 | // object is used as a scratch register. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3375 | __ RecordWriteField(temp, |
| 3376 | offset, |
| 3377 | value, |
| 3378 | object, |
| 3379 | kSaveFPRegs, |
| 3380 | EMIT_REMEMBERED_SET, |
| 3381 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3382 | } |
| 3383 | } |
| 3384 | } |
| 3385 | |
| 3386 | |
| 3387 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3388 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3389 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3390 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3391 | |
| 3392 | __ mov(ecx, instr->name()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3393 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3394 | ? isolate()->builtins()->StoreIC_Initialize_Strict() |
| 3395 | : isolate()->builtins()->StoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3396 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3397 | } |
| 3398 | |
| 3399 | |
| 3400 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3401 | if (instr->index()->IsConstantOperand()) { |
| 3402 | __ cmp(ToOperand(instr->length()), |
danno@chromium.org | bf0c820 | 2011-12-27 10:09:42 +0000 | [diff] [blame] | 3403 | Immediate(ToInteger32(LConstantOperand::cast(instr->index())))); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 3404 | DeoptimizeIf(below_equal, instr->environment()); |
| 3405 | } else { |
| 3406 | __ cmp(ToRegister(instr->index()), ToOperand(instr->length())); |
| 3407 | DeoptimizeIf(above_equal, instr->environment()); |
| 3408 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3409 | } |
| 3410 | |
| 3411 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3412 | void LCodeGen::DoStoreKeyedSpecializedArrayElement( |
| 3413 | LStoreKeyedSpecializedArrayElement* instr) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3414 | ElementsKind elements_kind = instr->elements_kind(); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3415 | Operand operand(BuildFastArrayOperand(instr->external_pointer(), |
| 3416 | instr->key(), elements_kind, 0)); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3417 | if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3418 | __ cvtsd2ss(xmm0, ToDoubleRegister(instr->value())); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3419 | __ movss(operand, xmm0); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3420 | } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3421 | __ movdbl(operand, ToDoubleRegister(instr->value())); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3422 | } else { |
| 3423 | Register value = ToRegister(instr->value()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3424 | switch (elements_kind) { |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3425 | case EXTERNAL_PIXEL_ELEMENTS: |
| 3426 | case EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3427 | case EXTERNAL_BYTE_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3428 | __ mov_b(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3429 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3430 | case EXTERNAL_SHORT_ELEMENTS: |
| 3431 | case EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3432 | __ mov_w(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3433 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3434 | case EXTERNAL_INT_ELEMENTS: |
| 3435 | case EXTERNAL_UNSIGNED_INT_ELEMENTS: |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3436 | __ mov(operand, value); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3437 | break; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3438 | case EXTERNAL_FLOAT_ELEMENTS: |
| 3439 | case EXTERNAL_DOUBLE_ELEMENTS: |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3440 | case FAST_SMI_ONLY_ELEMENTS: |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3441 | case FAST_ELEMENTS: |
| 3442 | case FAST_DOUBLE_ELEMENTS: |
| 3443 | case DICTIONARY_ELEMENTS: |
| 3444 | case NON_STRICT_ARGUMENTS_ELEMENTS: |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3445 | UNREACHABLE(); |
| 3446 | break; |
| 3447 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3448 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3449 | } |
| 3450 | |
| 3451 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3452 | void LCodeGen::DoStoreKeyedFastElement(LStoreKeyedFastElement* instr) { |
| 3453 | Register value = ToRegister(instr->value()); |
| 3454 | Register elements = ToRegister(instr->object()); |
| 3455 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg; |
| 3456 | |
| 3457 | // Do the store. |
| 3458 | if (instr->key()->IsConstantOperand()) { |
| 3459 | ASSERT(!instr->hydrogen()->NeedsWriteBarrier()); |
| 3460 | LConstantOperand* const_operand = LConstantOperand::cast(instr->key()); |
| 3461 | int offset = |
| 3462 | ToInteger32(const_operand) * kPointerSize + FixedArray::kHeaderSize; |
| 3463 | __ mov(FieldOperand(elements, offset), value); |
| 3464 | } else { |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3465 | __ mov(FieldOperand(elements, |
| 3466 | key, |
| 3467 | times_pointer_size, |
| 3468 | FixedArray::kHeaderSize), |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3469 | value); |
| 3470 | } |
| 3471 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3472 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3473 | HType type = instr->hydrogen()->value()->type(); |
| 3474 | SmiCheck check_needed = |
| 3475 | type.IsHeapObject() ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3476 | // Compute address of modified element and store it into key register. |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 3477 | __ lea(key, |
| 3478 | FieldOperand(elements, |
| 3479 | key, |
| 3480 | times_pointer_size, |
| 3481 | FixedArray::kHeaderSize)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3482 | __ RecordWrite(elements, |
| 3483 | key, |
| 3484 | value, |
| 3485 | kSaveFPRegs, |
| 3486 | EMIT_REMEMBERED_SET, |
| 3487 | check_needed); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3488 | } |
| 3489 | } |
| 3490 | |
| 3491 | |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3492 | void LCodeGen::DoStoreKeyedFastDoubleElement( |
| 3493 | LStoreKeyedFastDoubleElement* instr) { |
| 3494 | XMMRegister value = ToDoubleRegister(instr->value()); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3495 | Label have_value; |
| 3496 | |
| 3497 | __ ucomisd(value, value); |
| 3498 | __ j(parity_odd, &have_value); // NaN. |
| 3499 | |
| 3500 | ExternalReference canonical_nan_reference = |
| 3501 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 3502 | __ movdbl(value, Operand::StaticVariable(canonical_nan_reference)); |
| 3503 | __ bind(&have_value); |
| 3504 | |
| 3505 | Operand double_store_operand = BuildFastArrayOperand( |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3506 | instr->elements(), instr->key(), FAST_DOUBLE_ELEMENTS, |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 3507 | FixedDoubleArray::kHeaderSize - kHeapObjectTag); |
| 3508 | __ movdbl(double_store_operand, value); |
| 3509 | } |
| 3510 | |
| 3511 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3512 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 3513 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3514 | ASSERT(ToRegister(instr->object()).is(edx)); |
| 3515 | ASSERT(ToRegister(instr->key()).is(ecx)); |
| 3516 | ASSERT(ToRegister(instr->value()).is(eax)); |
| 3517 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3518 | Handle<Code> ic = (instr->strict_mode_flag() == kStrictMode) |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3519 | ? isolate()->builtins()->KeyedStoreIC_Initialize_Strict() |
| 3520 | : isolate()->builtins()->KeyedStoreIC_Initialize(); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3521 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3522 | } |
| 3523 | |
| 3524 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3525 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 3526 | Register object_reg = ToRegister(instr->object()); |
| 3527 | Register new_map_reg = ToRegister(instr->new_map_reg()); |
| 3528 | |
| 3529 | Handle<Map> from_map = instr->original_map(); |
| 3530 | Handle<Map> to_map = instr->transitioned_map(); |
| 3531 | ElementsKind from_kind = from_map->elements_kind(); |
| 3532 | ElementsKind to_kind = to_map->elements_kind(); |
| 3533 | |
| 3534 | Label not_applicable; |
| 3535 | __ cmp(FieldOperand(object_reg, HeapObject::kMapOffset), from_map); |
| 3536 | __ j(not_equal, ¬_applicable); |
| 3537 | __ mov(new_map_reg, to_map); |
| 3538 | if (from_kind == FAST_SMI_ONLY_ELEMENTS && to_kind == FAST_ELEMENTS) { |
| 3539 | Register object_reg = ToRegister(instr->object()); |
| 3540 | __ mov(FieldOperand(object_reg, HeapObject::kMapOffset), new_map_reg); |
| 3541 | // Write barrier. |
| 3542 | ASSERT_NE(instr->temp_reg(), NULL); |
| 3543 | __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, |
| 3544 | ToRegister(instr->temp_reg()), kDontSaveFPRegs); |
| 3545 | } else if (from_kind == FAST_SMI_ONLY_ELEMENTS && |
| 3546 | to_kind == FAST_DOUBLE_ELEMENTS) { |
| 3547 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3548 | ASSERT(fixed_object_reg.is(edx)); |
| 3549 | ASSERT(new_map_reg.is(ebx)); |
| 3550 | __ mov(fixed_object_reg, object_reg); |
| 3551 | CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), |
| 3552 | RelocInfo::CODE_TARGET, instr); |
| 3553 | } else if (from_kind == FAST_DOUBLE_ELEMENTS && to_kind == FAST_ELEMENTS) { |
| 3554 | Register fixed_object_reg = ToRegister(instr->temp_reg()); |
| 3555 | ASSERT(fixed_object_reg.is(edx)); |
| 3556 | ASSERT(new_map_reg.is(ebx)); |
| 3557 | __ mov(fixed_object_reg, object_reg); |
| 3558 | CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), |
| 3559 | RelocInfo::CODE_TARGET, instr); |
| 3560 | } else { |
| 3561 | UNREACHABLE(); |
| 3562 | } |
| 3563 | __ bind(¬_applicable); |
| 3564 | } |
| 3565 | |
| 3566 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3567 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3568 | class DeferredStringCharCodeAt: public LDeferredCode { |
| 3569 | public: |
| 3570 | DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) |
| 3571 | : LDeferredCode(codegen), instr_(instr) { } |
| 3572 | virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3573 | virtual LInstruction* instr() { return instr_; } |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3574 | private: |
| 3575 | LStringCharCodeAt* instr_; |
| 3576 | }; |
| 3577 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3578 | DeferredStringCharCodeAt* deferred = |
| 3579 | new DeferredStringCharCodeAt(this, instr); |
| 3580 | |
erikcorry | 0ad885c | 2011-11-21 13:51:57 +0000 | [diff] [blame] | 3581 | StringCharLoadGenerator::Generate(masm(), |
| 3582 | factory(), |
| 3583 | ToRegister(instr->string()), |
| 3584 | ToRegister(instr->index()), |
| 3585 | ToRegister(instr->result()), |
| 3586 | deferred->entry()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3587 | __ bind(deferred->exit()); |
| 3588 | } |
| 3589 | |
| 3590 | |
| 3591 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 3592 | Register string = ToRegister(instr->string()); |
| 3593 | Register result = ToRegister(instr->result()); |
| 3594 | |
| 3595 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3596 | // result register contain a valid pointer because it is already |
| 3597 | // contained in the register pointer map. |
| 3598 | __ Set(result, Immediate(0)); |
| 3599 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3600 | PushSafepointRegistersScope scope(this); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3601 | __ push(string); |
| 3602 | // Push the index as a smi. This is safe because of the checks in |
| 3603 | // DoStringCharCodeAt above. |
| 3604 | STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue); |
| 3605 | if (instr->index()->IsConstantOperand()) { |
| 3606 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 3607 | __ push(Immediate(Smi::FromInt(const_index))); |
| 3608 | } else { |
| 3609 | Register index = ToRegister(instr->index()); |
| 3610 | __ SmiTag(index); |
| 3611 | __ push(index); |
| 3612 | } |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3613 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAt, 2, |
| 3614 | instr, instr->context()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3615 | if (FLAG_debug_code) { |
| 3616 | __ AbortIfNotSmi(eax); |
| 3617 | } |
| 3618 | __ SmiUntag(eax); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3619 | __ StoreToSafepointRegisterSlot(result, eax); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3620 | } |
| 3621 | |
| 3622 | |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3623 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
| 3624 | class DeferredStringCharFromCode: public LDeferredCode { |
| 3625 | public: |
| 3626 | DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) |
| 3627 | : LDeferredCode(codegen), instr_(instr) { } |
| 3628 | virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3629 | virtual LInstruction* instr() { return instr_; } |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3630 | private: |
| 3631 | LStringCharFromCode* instr_; |
| 3632 | }; |
| 3633 | |
| 3634 | DeferredStringCharFromCode* deferred = |
| 3635 | new DeferredStringCharFromCode(this, instr); |
| 3636 | |
| 3637 | ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); |
| 3638 | Register char_code = ToRegister(instr->char_code()); |
| 3639 | Register result = ToRegister(instr->result()); |
| 3640 | ASSERT(!char_code.is(result)); |
| 3641 | |
| 3642 | __ cmp(char_code, String::kMaxAsciiCharCode); |
| 3643 | __ j(above, deferred->entry()); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3644 | __ Set(result, Immediate(factory()->single_character_string_cache())); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3645 | __ mov(result, FieldOperand(result, |
| 3646 | char_code, times_pointer_size, |
| 3647 | FixedArray::kHeaderSize)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3648 | __ cmp(result, factory()->undefined_value()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3649 | __ j(equal, deferred->entry()); |
| 3650 | __ bind(deferred->exit()); |
| 3651 | } |
| 3652 | |
| 3653 | |
| 3654 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 3655 | Register char_code = ToRegister(instr->char_code()); |
| 3656 | Register result = ToRegister(instr->result()); |
| 3657 | |
| 3658 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3659 | // result register contain a valid pointer because it is already |
| 3660 | // contained in the register pointer map. |
| 3661 | __ Set(result, Immediate(0)); |
| 3662 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3663 | PushSafepointRegistersScope scope(this); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3664 | __ SmiTag(char_code); |
| 3665 | __ push(char_code); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3666 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context()); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3667 | __ StoreToSafepointRegisterSlot(result, eax); |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 3668 | } |
| 3669 | |
| 3670 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3671 | void LCodeGen::DoStringLength(LStringLength* instr) { |
| 3672 | Register string = ToRegister(instr->string()); |
| 3673 | Register result = ToRegister(instr->result()); |
| 3674 | __ mov(result, FieldOperand(string, String::kLengthOffset)); |
| 3675 | } |
| 3676 | |
| 3677 | |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3678 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 3679 | EmitPushTaggedOperand(instr->left()); |
| 3680 | EmitPushTaggedOperand(instr->right()); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3681 | StringAddStub stub(NO_STRING_CHECK_IN_STUB); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3682 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3683 | } |
| 3684 | |
| 3685 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3686 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3687 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3688 | ASSERT(input->IsRegister() || input->IsStackSlot()); |
| 3689 | LOperand* output = instr->result(); |
| 3690 | ASSERT(output->IsDoubleRegister()); |
| 3691 | __ cvtsi2sd(ToDoubleRegister(output), ToOperand(input)); |
| 3692 | } |
| 3693 | |
| 3694 | |
| 3695 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
| 3696 | class DeferredNumberTagI: public LDeferredCode { |
| 3697 | public: |
| 3698 | DeferredNumberTagI(LCodeGen* codegen, LNumberTagI* instr) |
| 3699 | : LDeferredCode(codegen), instr_(instr) { } |
| 3700 | virtual void Generate() { codegen()->DoDeferredNumberTagI(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3701 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3702 | private: |
| 3703 | LNumberTagI* instr_; |
| 3704 | }; |
| 3705 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3706 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3707 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3708 | Register reg = ToRegister(input); |
| 3709 | |
| 3710 | DeferredNumberTagI* deferred = new DeferredNumberTagI(this, instr); |
| 3711 | __ SmiTag(reg); |
| 3712 | __ j(overflow, deferred->entry()); |
| 3713 | __ bind(deferred->exit()); |
| 3714 | } |
| 3715 | |
| 3716 | |
| 3717 | void LCodeGen::DoDeferredNumberTagI(LNumberTagI* instr) { |
| 3718 | Label slow; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3719 | Register reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3720 | Register tmp = reg.is(eax) ? ecx : eax; |
| 3721 | |
| 3722 | // Preserve the value of all registers. |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3723 | PushSafepointRegistersScope scope(this); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3724 | |
| 3725 | // There was overflow, so bits 30 and 31 of the original integer |
| 3726 | // disagree. Try to allocate a heap number in new space and store |
| 3727 | // the value in there. If that fails, call the runtime system. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3728 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3729 | __ SmiUntag(reg); |
| 3730 | __ xor_(reg, 0x80000000); |
| 3731 | __ cvtsi2sd(xmm0, Operand(reg)); |
| 3732 | if (FLAG_inline_new) { |
| 3733 | __ AllocateHeapNumber(reg, tmp, no_reg, &slow); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3734 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3735 | } |
| 3736 | |
| 3737 | // Slow case: Call the runtime system to do the number allocation. |
| 3738 | __ bind(&slow); |
| 3739 | |
| 3740 | // TODO(3095996): Put a valid pointer value in the stack slot where the result |
| 3741 | // register is stored, as this register is in the pointer map, but contains an |
| 3742 | // integer value. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3743 | __ StoreToSafepointRegisterSlot(reg, Immediate(0)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3744 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 3745 | // the environment's HContext or HInlinedContext value. |
| 3746 | // They only call Runtime::kAllocateHeapNumber. |
| 3747 | // The corresponding HChange instructions are added in a phase that does |
| 3748 | // not have easy access to the local context. |
| 3749 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 3750 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
| 3751 | RecordSafepointWithRegisters( |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3752 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3753 | if (!reg.is(eax)) __ mov(reg, eax); |
| 3754 | |
| 3755 | // Done. Put the value in xmm0 into the value of the allocated heap |
| 3756 | // number. |
| 3757 | __ bind(&done); |
| 3758 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), xmm0); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3759 | __ StoreToSafepointRegisterSlot(reg, reg); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3760 | } |
| 3761 | |
| 3762 | |
| 3763 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
| 3764 | class DeferredNumberTagD: public LDeferredCode { |
| 3765 | public: |
| 3766 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 3767 | : LDeferredCode(codegen), instr_(instr) { } |
| 3768 | virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3769 | virtual LInstruction* instr() { return instr_; } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3770 | private: |
| 3771 | LNumberTagD* instr_; |
| 3772 | }; |
| 3773 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3774 | XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3775 | Register reg = ToRegister(instr->result()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3776 | Register tmp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3777 | |
| 3778 | DeferredNumberTagD* deferred = new DeferredNumberTagD(this, instr); |
| 3779 | if (FLAG_inline_new) { |
| 3780 | __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); |
| 3781 | } else { |
| 3782 | __ jmp(deferred->entry()); |
| 3783 | } |
| 3784 | __ bind(deferred->exit()); |
| 3785 | __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); |
| 3786 | } |
| 3787 | |
| 3788 | |
| 3789 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 3790 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 3791 | // result register contain a valid pointer because it is already |
| 3792 | // contained in the register pointer map. |
| 3793 | Register reg = ToRegister(instr->result()); |
| 3794 | __ Set(reg, Immediate(0)); |
| 3795 | |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 3796 | PushSafepointRegistersScope scope(this); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 3797 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 3798 | // the environment's HContext or HInlinedContext value. |
| 3799 | // They only call Runtime::kAllocateHeapNumber. |
| 3800 | // The corresponding HChange instructions are added in a phase that does |
| 3801 | // not have easy access to the local context. |
| 3802 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 3803 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 3804 | RecordSafepointWithRegisters( |
| 3805 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3806 | __ StoreToSafepointRegisterSlot(reg, eax); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3807 | } |
| 3808 | |
| 3809 | |
| 3810 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3811 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3812 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3813 | ASSERT(!instr->hydrogen_value()->CheckFlag(HValue::kCanOverflow)); |
| 3814 | __ SmiTag(ToRegister(input)); |
| 3815 | } |
| 3816 | |
| 3817 | |
| 3818 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3819 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3820 | ASSERT(input->IsRegister() && input->Equals(instr->result())); |
| 3821 | if (instr->needs_check()) { |
| 3822 | __ test(ToRegister(input), Immediate(kSmiTagMask)); |
| 3823 | DeoptimizeIf(not_zero, instr->environment()); |
| 3824 | } |
| 3825 | __ SmiUntag(ToRegister(input)); |
| 3826 | } |
| 3827 | |
| 3828 | |
| 3829 | void LCodeGen::EmitNumberUntagD(Register input_reg, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3830 | Register temp_reg, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3831 | XMMRegister result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3832 | bool deoptimize_on_undefined, |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3833 | bool deoptimize_on_minus_zero, |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3834 | LEnvironment* env) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3835 | Label load_smi, done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3836 | |
| 3837 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3838 | __ JumpIfSmi(input_reg, &load_smi, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3839 | |
| 3840 | // Heap number map check. |
| 3841 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3842 | factory()->heap_number_map()); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3843 | if (deoptimize_on_undefined) { |
| 3844 | DeoptimizeIf(not_equal, env); |
| 3845 | } else { |
| 3846 | Label heap_number; |
| 3847 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3848 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3849 | __ cmp(input_reg, factory()->undefined_value()); |
| 3850 | DeoptimizeIf(not_equal, env); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3851 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3852 | // Convert undefined to NaN. |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 3853 | ExternalReference nan = |
| 3854 | ExternalReference::address_of_canonical_non_hole_nan(); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3855 | __ movdbl(result_reg, Operand::StaticVariable(nan)); |
| 3856 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3857 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3858 | __ bind(&heap_number); |
| 3859 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3860 | // Heap number to XMM conversion. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3861 | __ movdbl(result_reg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3862 | if (deoptimize_on_minus_zero) { |
| 3863 | XMMRegister xmm_scratch = xmm0; |
| 3864 | __ xorps(xmm_scratch, xmm_scratch); |
| 3865 | __ ucomisd(result_reg, xmm_scratch); |
| 3866 | __ j(not_zero, &done, Label::kNear); |
| 3867 | __ movmskpd(temp_reg, result_reg); |
| 3868 | __ test_b(temp_reg, 1); |
| 3869 | DeoptimizeIf(not_zero, env); |
| 3870 | } |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3871 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3872 | |
| 3873 | // Smi to XMM conversion |
| 3874 | __ bind(&load_smi); |
| 3875 | __ SmiUntag(input_reg); // Untag smi before converting to float. |
| 3876 | __ cvtsi2sd(result_reg, Operand(input_reg)); |
| 3877 | __ SmiTag(input_reg); // Retag smi. |
| 3878 | __ bind(&done); |
| 3879 | } |
| 3880 | |
| 3881 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3882 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3883 | Label done, heap_number; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3884 | Register input_reg = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3885 | |
| 3886 | // Heap number map check. |
| 3887 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3888 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3889 | |
| 3890 | if (instr->truncating()) { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3891 | __ j(equal, &heap_number, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3892 | // Check for undefined. Undefined is converted to zero for truncating |
| 3893 | // conversions. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3894 | __ cmp(input_reg, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3895 | DeoptimizeIf(not_equal, instr->environment()); |
| 3896 | __ mov(input_reg, 0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3897 | __ jmp(&done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3898 | |
| 3899 | __ bind(&heap_number); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 3900 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3901 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3902 | Label convert; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3903 | // Use more powerful conversion when sse3 is available. |
| 3904 | // Load x87 register with heap number. |
| 3905 | __ fld_d(FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3906 | // Get exponent alone and check for too-big exponent. |
| 3907 | __ mov(input_reg, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 3908 | __ and_(input_reg, HeapNumber::kExponentMask); |
| 3909 | const uint32_t kTooBigExponent = |
| 3910 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 3911 | __ cmp(Operand(input_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 3912 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3913 | // Pop FPU stack before deoptimizing. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 3914 | __ fstp(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3915 | DeoptimizeIf(no_condition, instr->environment()); |
| 3916 | |
| 3917 | // Reserve space for 64 bit answer. |
| 3918 | __ bind(&convert); |
| 3919 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 3920 | // Do conversion, which cannot fail because we checked the exponent. |
| 3921 | __ fisttp_d(Operand(esp, 0)); |
| 3922 | __ mov(input_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 3923 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3924 | } else { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3925 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3926 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3927 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 3928 | __ cmp(input_reg, 0x80000000u); |
| 3929 | __ j(not_equal, &done); |
| 3930 | // Check if the input was 0x8000000 (kMinInt). |
| 3931 | // If no, then we got an overflow and we deoptimize. |
| 3932 | ExternalReference min_int = ExternalReference::address_of_min_int(); |
| 3933 | __ movdbl(xmm_temp, Operand::StaticVariable(min_int)); |
| 3934 | __ ucomisd(xmm_temp, xmm0); |
| 3935 | DeoptimizeIf(not_equal, instr->environment()); |
| 3936 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 3937 | } |
| 3938 | } else { |
| 3939 | // Deoptimize if we don't have a heap number. |
| 3940 | DeoptimizeIf(not_equal, instr->environment()); |
| 3941 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3942 | XMMRegister xmm_temp = ToDoubleRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3943 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 3944 | __ cvttsd2si(input_reg, Operand(xmm0)); |
| 3945 | __ cvtsi2sd(xmm_temp, Operand(input_reg)); |
| 3946 | __ ucomisd(xmm0, xmm_temp); |
| 3947 | DeoptimizeIf(not_equal, instr->environment()); |
| 3948 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 3949 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3950 | __ test(input_reg, Operand(input_reg)); |
| 3951 | __ j(not_zero, &done); |
| 3952 | __ movmskpd(input_reg, xmm0); |
| 3953 | __ and_(input_reg, 1); |
| 3954 | DeoptimizeIf(not_zero, instr->environment()); |
| 3955 | } |
| 3956 | } |
| 3957 | __ bind(&done); |
| 3958 | } |
| 3959 | |
| 3960 | |
| 3961 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3962 | class DeferredTaggedToI: public LDeferredCode { |
| 3963 | public: |
| 3964 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 3965 | : LDeferredCode(codegen), instr_(instr) { } |
| 3966 | virtual void Generate() { codegen()->DoDeferredTaggedToI(instr_); } |
| 3967 | virtual LInstruction* instr() { return instr_; } |
| 3968 | private: |
| 3969 | LTaggedToI* instr_; |
| 3970 | }; |
| 3971 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3972 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3973 | ASSERT(input->IsRegister()); |
| 3974 | ASSERT(input->Equals(instr->result())); |
| 3975 | |
| 3976 | Register input_reg = ToRegister(input); |
| 3977 | |
| 3978 | DeferredTaggedToI* deferred = new DeferredTaggedToI(this, instr); |
| 3979 | |
| 3980 | // Smi check. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3981 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3982 | |
| 3983 | // Smi to int32 conversion |
| 3984 | __ SmiUntag(input_reg); // Untag smi. |
| 3985 | |
| 3986 | __ bind(deferred->exit()); |
| 3987 | } |
| 3988 | |
| 3989 | |
| 3990 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 3991 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3992 | ASSERT(input->IsRegister()); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3993 | LOperand* temp = instr->TempAt(0); |
| 3994 | ASSERT(temp == NULL || temp->IsRegister()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3995 | LOperand* result = instr->result(); |
| 3996 | ASSERT(result->IsDoubleRegister()); |
| 3997 | |
| 3998 | Register input_reg = ToRegister(input); |
| 3999 | XMMRegister result_reg = ToDoubleRegister(result); |
| 4000 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4001 | bool deoptimize_on_minus_zero = |
| 4002 | instr->hydrogen()->deoptimize_on_minus_zero(); |
| 4003 | Register temp_reg = deoptimize_on_minus_zero ? ToRegister(temp) : no_reg; |
| 4004 | |
| 4005 | EmitNumberUntagD(input_reg, |
| 4006 | temp_reg, |
| 4007 | result_reg, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4008 | instr->hydrogen()->deoptimize_on_undefined(), |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4009 | deoptimize_on_minus_zero, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4010 | instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4011 | } |
| 4012 | |
| 4013 | |
| 4014 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4015 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4016 | ASSERT(input->IsDoubleRegister()); |
| 4017 | LOperand* result = instr->result(); |
| 4018 | ASSERT(result->IsRegister()); |
| 4019 | |
| 4020 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4021 | Register result_reg = ToRegister(result); |
| 4022 | |
| 4023 | if (instr->truncating()) { |
| 4024 | // Performs a truncating conversion of a floating point number as used by |
| 4025 | // the JS bitwise operations. |
| 4026 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4027 | __ cmp(result_reg, 0x80000000u); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 4028 | if (CpuFeatures::IsSupported(SSE3)) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4029 | // This will deoptimize if the exponent of the input in out of range. |
| 4030 | CpuFeatures::Scope scope(SSE3); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4031 | Label convert, done; |
| 4032 | __ j(not_equal, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4033 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 4034 | __ movdbl(Operand(esp, 0), input_reg); |
| 4035 | // Get exponent alone and check for too-big exponent. |
| 4036 | __ mov(result_reg, Operand(esp, sizeof(int32_t))); |
| 4037 | __ and_(result_reg, HeapNumber::kExponentMask); |
| 4038 | const uint32_t kTooBigExponent = |
| 4039 | (HeapNumber::kExponentBias + 63) << HeapNumber::kExponentShift; |
| 4040 | __ cmp(Operand(result_reg), Immediate(kTooBigExponent)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4041 | __ j(less, &convert, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4042 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4043 | DeoptimizeIf(no_condition, instr->environment()); |
| 4044 | __ bind(&convert); |
| 4045 | // Do conversion, which cannot fail because we checked the exponent. |
| 4046 | __ fld_d(Operand(esp, 0)); |
| 4047 | __ fisttp_d(Operand(esp, 0)); |
| 4048 | __ mov(result_reg, Operand(esp, 0)); // Low word of answer is the result. |
| 4049 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 4050 | __ bind(&done); |
| 4051 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4052 | Label done; |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4053 | Register temp_reg = ToRegister(instr->TempAt(0)); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4054 | XMMRegister xmm_scratch = xmm0; |
| 4055 | |
| 4056 | // If cvttsd2si succeeded, we're done. Otherwise, we attempt |
| 4057 | // manual conversion. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4058 | __ j(not_equal, &done, Label::kNear); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4059 | |
| 4060 | // Get high 32 bits of the input in result_reg and temp_reg. |
| 4061 | __ pshufd(xmm_scratch, input_reg, 1); |
| 4062 | __ movd(Operand(temp_reg), xmm_scratch); |
| 4063 | __ mov(result_reg, temp_reg); |
| 4064 | |
| 4065 | // Prepare negation mask in temp_reg. |
| 4066 | __ sar(temp_reg, kBitsPerInt - 1); |
| 4067 | |
| 4068 | // Extract the exponent from result_reg and subtract adjusted |
| 4069 | // bias from it. The adjustment is selected in a way such that |
| 4070 | // when the difference is zero, the answer is in the low 32 bits |
| 4071 | // of the input, otherwise a shift has to be performed. |
| 4072 | __ shr(result_reg, HeapNumber::kExponentShift); |
| 4073 | __ and_(result_reg, |
| 4074 | HeapNumber::kExponentMask >> HeapNumber::kExponentShift); |
| 4075 | __ sub(Operand(result_reg), |
| 4076 | Immediate(HeapNumber::kExponentBias + |
| 4077 | HeapNumber::kExponentBits + |
| 4078 | HeapNumber::kMantissaBits)); |
| 4079 | // Don't handle big (> kMantissaBits + kExponentBits == 63) or |
| 4080 | // special exponents. |
| 4081 | DeoptimizeIf(greater, instr->environment()); |
| 4082 | |
| 4083 | // Zero out the sign and the exponent in the input (by shifting |
| 4084 | // it to the left) and restore the implicit mantissa bit, |
| 4085 | // i.e. convert the input to unsigned int64 shifted left by |
| 4086 | // kExponentBits. |
| 4087 | ExternalReference minus_zero = ExternalReference::address_of_minus_zero(); |
| 4088 | // Minus zero has the most significant bit set and the other |
| 4089 | // bits cleared. |
| 4090 | __ movdbl(xmm_scratch, Operand::StaticVariable(minus_zero)); |
| 4091 | __ psllq(input_reg, HeapNumber::kExponentBits); |
| 4092 | __ por(input_reg, xmm_scratch); |
| 4093 | |
| 4094 | // Get the amount to shift the input right in xmm_scratch. |
| 4095 | __ neg(result_reg); |
| 4096 | __ movd(xmm_scratch, Operand(result_reg)); |
| 4097 | |
| 4098 | // Shift the input right and extract low 32 bits. |
| 4099 | __ psrlq(input_reg, xmm_scratch); |
| 4100 | __ movd(Operand(result_reg), input_reg); |
| 4101 | |
| 4102 | // Use the prepared mask in temp_reg to negate the result if necessary. |
| 4103 | __ xor_(result_reg, Operand(temp_reg)); |
| 4104 | __ sub(result_reg, Operand(temp_reg)); |
| 4105 | __ bind(&done); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4106 | } |
| 4107 | } else { |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4108 | Label done; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4109 | __ cvttsd2si(result_reg, Operand(input_reg)); |
| 4110 | __ cvtsi2sd(xmm0, Operand(result_reg)); |
| 4111 | __ ucomisd(xmm0, input_reg); |
| 4112 | DeoptimizeIf(not_equal, instr->environment()); |
| 4113 | DeoptimizeIf(parity_even, instr->environment()); // NaN. |
| 4114 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 4115 | // The integer converted back is equal to the original. We |
| 4116 | // only have to test if we got -0 as an input. |
| 4117 | __ test(result_reg, Operand(result_reg)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4118 | __ j(not_zero, &done, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4119 | __ movmskpd(result_reg, input_reg); |
| 4120 | // Bit 0 contains the sign of the double in input_reg. |
| 4121 | // If input was positive, we are ok and return 0, otherwise |
| 4122 | // deoptimize. |
| 4123 | __ and_(result_reg, 1); |
| 4124 | DeoptimizeIf(not_zero, instr->environment()); |
| 4125 | } |
| 4126 | __ bind(&done); |
| 4127 | } |
| 4128 | } |
| 4129 | |
| 4130 | |
| 4131 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4132 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4133 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4134 | DeoptimizeIf(not_zero, instr->environment()); |
| 4135 | } |
| 4136 | |
| 4137 | |
| 4138 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
| 4139 | LOperand* input = instr->InputAt(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 4140 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4141 | DeoptimizeIf(zero, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4142 | } |
| 4143 | |
| 4144 | |
| 4145 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4146 | Register input = ToRegister(instr->InputAt(0)); |
| 4147 | Register temp = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4148 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4149 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4150 | |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4151 | if (instr->hydrogen()->is_interval_check()) { |
| 4152 | InstanceType first; |
| 4153 | InstanceType last; |
| 4154 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4155 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4156 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4157 | static_cast<int8_t>(first)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4158 | |
| 4159 | // If there is only one type in the interval check for equality. |
| 4160 | if (first == last) { |
| 4161 | DeoptimizeIf(not_equal, instr->environment()); |
| 4162 | } else { |
| 4163 | DeoptimizeIf(below, instr->environment()); |
| 4164 | // Omit check for the last type. |
| 4165 | if (last != LAST_TYPE) { |
| 4166 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4167 | static_cast<int8_t>(last)); |
| 4168 | DeoptimizeIf(above, instr->environment()); |
| 4169 | } |
| 4170 | } |
| 4171 | } else { |
| 4172 | uint8_t mask; |
| 4173 | uint8_t tag; |
| 4174 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4175 | |
| 4176 | if (IsPowerOf2(mask)) { |
| 4177 | ASSERT(tag == 0 || IsPowerOf2(tag)); |
| 4178 | __ test_b(FieldOperand(temp, Map::kInstanceTypeOffset), mask); |
| 4179 | DeoptimizeIf(tag == 0 ? not_zero : zero, instr->environment()); |
| 4180 | } else { |
| 4181 | __ movzx_b(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 4182 | __ and_(temp, mask); |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 4183 | __ cmp(temp, tag); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4184 | DeoptimizeIf(not_equal, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4185 | } |
| 4186 | } |
| 4187 | } |
| 4188 | |
| 4189 | |
| 4190 | void LCodeGen::DoCheckFunction(LCheckFunction* instr) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4191 | Handle<JSFunction> target = instr->hydrogen()->target(); |
| 4192 | if (isolate()->heap()->InNewSpace(*target)) { |
| 4193 | Register reg = ToRegister(instr->value()); |
| 4194 | Handle<JSGlobalPropertyCell> cell = |
| 4195 | isolate()->factory()->NewJSGlobalPropertyCell(target); |
| 4196 | __ cmp(reg, Operand::Cell(cell)); |
| 4197 | } else { |
| 4198 | Operand operand = ToOperand(instr->value()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4199 | __ cmp(operand, target); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4200 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4201 | DeoptimizeIf(not_equal, instr->environment()); |
| 4202 | } |
| 4203 | |
| 4204 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4205 | void LCodeGen::DoCheckMapCommon(Register reg, |
| 4206 | Handle<Map> map, |
| 4207 | CompareMapMode mode, |
| 4208 | LEnvironment* env) { |
| 4209 | Label success; |
| 4210 | __ CompareMap(reg, map, &success, mode); |
| 4211 | DeoptimizeIf(not_equal, env); |
| 4212 | __ bind(&success); |
| 4213 | } |
| 4214 | |
| 4215 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4216 | void LCodeGen::DoCheckMap(LCheckMap* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4217 | LOperand* input = instr->InputAt(0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4218 | ASSERT(input->IsRegister()); |
| 4219 | Register reg = ToRegister(input); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4220 | Handle<Map> map = instr->hydrogen()->map(); |
| 4221 | DoCheckMapCommon(reg, map, instr->hydrogen()->mode(), instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4222 | } |
| 4223 | |
| 4224 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4225 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 4226 | XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
| 4227 | Register result_reg = ToRegister(instr->result()); |
| 4228 | __ ClampDoubleToUint8(value_reg, xmm0, result_reg); |
| 4229 | } |
| 4230 | |
| 4231 | |
| 4232 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
| 4233 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4234 | Register value_reg = ToRegister(instr->result()); |
| 4235 | __ ClampUint8(value_reg); |
| 4236 | } |
| 4237 | |
| 4238 | |
| 4239 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
| 4240 | ASSERT(instr->unclamped()->Equals(instr->result())); |
| 4241 | Register input_reg = ToRegister(instr->unclamped()); |
| 4242 | Label is_smi, done, heap_number; |
| 4243 | |
| 4244 | __ JumpIfSmi(input_reg, &is_smi); |
| 4245 | |
| 4246 | // Check for heap number |
| 4247 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4248 | factory()->heap_number_map()); |
| 4249 | __ j(equal, &heap_number, Label::kNear); |
| 4250 | |
| 4251 | // Check for undefined. Undefined is converted to zero for clamping |
| 4252 | // conversions. |
| 4253 | __ cmp(input_reg, factory()->undefined_value()); |
| 4254 | DeoptimizeIf(not_equal, instr->environment()); |
| 4255 | __ mov(input_reg, 0); |
| 4256 | __ jmp(&done, Label::kNear); |
| 4257 | |
| 4258 | // Heap number |
| 4259 | __ bind(&heap_number); |
| 4260 | __ movdbl(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4261 | __ ClampDoubleToUint8(xmm0, xmm1, input_reg); |
| 4262 | __ jmp(&done, Label::kNear); |
| 4263 | |
| 4264 | // smi |
| 4265 | __ bind(&is_smi); |
| 4266 | __ SmiUntag(input_reg); |
| 4267 | __ ClampUint8(input_reg); |
| 4268 | |
| 4269 | __ bind(&done); |
| 4270 | } |
| 4271 | |
| 4272 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4273 | void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4274 | Register reg = ToRegister(instr->TempAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4275 | |
| 4276 | Handle<JSObject> holder = instr->holder(); |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 4277 | Handle<JSObject> current_prototype = instr->prototype(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4278 | |
| 4279 | // Load prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4280 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4281 | |
| 4282 | // Check prototype maps up to the holder. |
| 4283 | while (!current_prototype.is_identical_to(holder)) { |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4284 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4285 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
| 4286 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4287 | current_prototype = |
| 4288 | Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype())); |
| 4289 | // Load next prototype object. |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4290 | __ LoadHeapObject(reg, current_prototype); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4291 | } |
| 4292 | |
| 4293 | // Check the holder map. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4294 | DoCheckMapCommon(reg, Handle<Map>(current_prototype->map()), |
| 4295 | ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4296 | } |
| 4297 | |
| 4298 | |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4299 | void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
| 4300 | class DeferredAllocateObject: public LDeferredCode { |
| 4301 | public: |
| 4302 | DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
| 4303 | : LDeferredCode(codegen), instr_(instr) { } |
| 4304 | virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
| 4305 | virtual LInstruction* instr() { return instr_; } |
| 4306 | private: |
| 4307 | LAllocateObject* instr_; |
| 4308 | }; |
| 4309 | |
| 4310 | DeferredAllocateObject* deferred = new DeferredAllocateObject(this, instr); |
| 4311 | |
fschneider@chromium.org | 35814e5 | 2012-03-01 15:43:35 +0000 | [diff] [blame] | 4312 | Register result = ToRegister(instr->result()); |
| 4313 | Register scratch = ToRegister(instr->TempAt(0)); |
| 4314 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
| 4315 | Handle<Map> initial_map(constructor->initial_map()); |
| 4316 | int instance_size = initial_map->instance_size(); |
| 4317 | ASSERT(initial_map->pre_allocated_property_fields() + |
| 4318 | initial_map->unused_property_fields() - |
| 4319 | initial_map->inobject_properties() == 0); |
| 4320 | |
| 4321 | // Allocate memory for the object. The initial map might change when |
| 4322 | // the constructor's prototype changes, but instance size and property |
| 4323 | // counts remain unchanged (if slack tracking finished). |
| 4324 | ASSERT(!constructor->shared()->IsInobjectSlackTrackingInProgress()); |
| 4325 | __ AllocateInNewSpace(instance_size, |
| 4326 | result, |
| 4327 | no_reg, |
| 4328 | scratch, |
| 4329 | deferred->entry(), |
| 4330 | TAG_OBJECT); |
| 4331 | |
| 4332 | // Load the initial map. |
| 4333 | Register map = scratch; |
| 4334 | __ LoadHeapObject(scratch, constructor); |
| 4335 | __ mov(map, FieldOperand(scratch, JSFunction::kPrototypeOrInitialMapOffset)); |
| 4336 | |
| 4337 | if (FLAG_debug_code) { |
| 4338 | __ AbortIfSmi(map); |
| 4339 | __ cmpb(FieldOperand(map, Map::kInstanceSizeOffset), |
| 4340 | instance_size >> kPointerSizeLog2); |
| 4341 | __ Assert(equal, "Unexpected instance size"); |
| 4342 | __ cmpb(FieldOperand(map, Map::kPreAllocatedPropertyFieldsOffset), |
| 4343 | initial_map->pre_allocated_property_fields()); |
| 4344 | __ Assert(equal, "Unexpected pre-allocated property fields count"); |
| 4345 | __ cmpb(FieldOperand(map, Map::kUnusedPropertyFieldsOffset), |
| 4346 | initial_map->unused_property_fields()); |
| 4347 | __ Assert(equal, "Unexpected unused property fields count"); |
| 4348 | __ cmpb(FieldOperand(map, Map::kInObjectPropertiesOffset), |
| 4349 | initial_map->inobject_properties()); |
| 4350 | __ Assert(equal, "Unexpected in-object property fields count"); |
| 4351 | } |
| 4352 | |
| 4353 | // Initialize map and fields of the newly allocated object. |
| 4354 | ASSERT(initial_map->instance_type() == JS_OBJECT_TYPE); |
| 4355 | __ mov(FieldOperand(result, JSObject::kMapOffset), map); |
| 4356 | __ mov(scratch, factory()->empty_fixed_array()); |
| 4357 | __ mov(FieldOperand(result, JSObject::kElementsOffset), scratch); |
| 4358 | __ mov(FieldOperand(result, JSObject::kPropertiesOffset), scratch); |
| 4359 | if (initial_map->inobject_properties() != 0) { |
| 4360 | __ mov(scratch, factory()->undefined_value()); |
| 4361 | for (int i = 0; i < initial_map->inobject_properties(); i++) { |
| 4362 | int property_offset = JSObject::kHeaderSize + i * kPointerSize; |
| 4363 | __ mov(FieldOperand(result, property_offset), scratch); |
| 4364 | } |
| 4365 | } |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 4366 | |
| 4367 | __ bind(deferred->exit()); |
| 4368 | } |
| 4369 | |
| 4370 | |
| 4371 | void LCodeGen::DoDeferredAllocateObject(LAllocateObject* instr) { |
| 4372 | Register result = ToRegister(instr->result()); |
| 4373 | Handle<JSFunction> constructor = instr->hydrogen()->constructor(); |
| 4374 | |
| 4375 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4376 | // result register contain a valid pointer because it is already |
| 4377 | // contained in the register pointer map. |
| 4378 | __ Set(result, Immediate(0)); |
| 4379 | |
| 4380 | PushSafepointRegistersScope scope(this); |
| 4381 | __ PushHeapObject(constructor); |
| 4382 | CallRuntimeFromDeferred(Runtime::kNewObject, 1, instr, instr->context()); |
| 4383 | __ StoreToSafepointRegisterSlot(result, eax); |
| 4384 | } |
| 4385 | |
| 4386 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4387 | void LCodeGen::DoArrayLiteral(LArrayLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4388 | ASSERT(ToRegister(instr->context()).is(esi)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4389 | Heap* heap = isolate()->heap(); |
| 4390 | ElementsKind boilerplate_elements_kind = |
| 4391 | instr->hydrogen()->boilerplate_elements_kind(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4392 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4393 | // Deopt if the array literal boilerplate ElementsKind is of a type different |
| 4394 | // than the expected one. The check isn't necessary if the boilerplate has |
| 4395 | // already been converted to FAST_ELEMENTS. |
| 4396 | if (boilerplate_elements_kind != FAST_ELEMENTS) { |
| 4397 | __ LoadHeapObject(eax, instr->hydrogen()->boilerplate_object()); |
| 4398 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 4399 | // Load the map's "bit field 2". We only need the first byte, |
| 4400 | // but the following masking takes care of that anyway. |
| 4401 | __ mov(ebx, FieldOperand(ebx, Map::kBitField2Offset)); |
| 4402 | // Retrieve elements_kind from bit field 2. |
| 4403 | __ and_(ebx, Map::kElementsKindMask); |
| 4404 | __ cmp(ebx, boilerplate_elements_kind << Map::kElementsKindShift); |
| 4405 | DeoptimizeIf(not_equal, instr->environment()); |
| 4406 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4407 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4408 | // Set up the parameters to the stub/runtime call. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4409 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4410 | __ push(FieldOperand(eax, JSFunction::kLiteralsOffset)); |
| 4411 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4412 | // Boilerplate already exists, constant elements are never accessed. |
| 4413 | // Pass an empty fixed array. |
| 4414 | __ push(Immediate(Handle<FixedArray>(heap->empty_fixed_array()))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4415 | |
| 4416 | // Pick the right runtime function or stub to call. |
| 4417 | int length = instr->hydrogen()->length(); |
| 4418 | if (instr->hydrogen()->IsCopyOnWrite()) { |
| 4419 | ASSERT(instr->hydrogen()->depth() == 1); |
| 4420 | FastCloneShallowArrayStub::Mode mode = |
| 4421 | FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS; |
| 4422 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4423 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4424 | } else if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4425 | CallRuntime(Runtime::kCreateArrayLiteral, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4426 | } else if (length > FastCloneShallowArrayStub::kMaximumClonedLength) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4427 | CallRuntime(Runtime::kCreateArrayLiteralShallow, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4428 | } else { |
| 4429 | FastCloneShallowArrayStub::Mode mode = |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4430 | boilerplate_elements_kind == FAST_DOUBLE_ELEMENTS |
| 4431 | ? FastCloneShallowArrayStub::CLONE_DOUBLE_ELEMENTS |
| 4432 | : FastCloneShallowArrayStub::CLONE_ELEMENTS; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4433 | FastCloneShallowArrayStub stub(mode, length); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4434 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4435 | } |
| 4436 | } |
| 4437 | |
| 4438 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4439 | void LCodeGen::EmitDeepCopy(Handle<JSObject> object, |
| 4440 | Register result, |
| 4441 | Register source, |
| 4442 | int* offset) { |
| 4443 | ASSERT(!source.is(ecx)); |
| 4444 | ASSERT(!result.is(ecx)); |
| 4445 | |
| 4446 | if (FLAG_debug_code) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4447 | __ LoadHeapObject(ecx, object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4448 | __ cmp(source, ecx); |
| 4449 | __ Assert(equal, "Unexpected object literal boilerplate"); |
| 4450 | } |
| 4451 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4452 | // Only elements backing stores for non-COW arrays need to be copied. |
| 4453 | Handle<FixedArrayBase> elements(object->elements()); |
| 4454 | bool has_elements = elements->length() > 0 && |
| 4455 | elements->map() != isolate()->heap()->fixed_cow_array_map(); |
| 4456 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4457 | // Increase the offset so that subsequent objects end up right after |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4458 | // this object and its backing store. |
| 4459 | int object_offset = *offset; |
| 4460 | int object_size = object->map()->instance_size(); |
| 4461 | int elements_offset = *offset + object_size; |
| 4462 | int elements_size = has_elements ? elements->Size() : 0; |
| 4463 | *offset += object_size + elements_size; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4464 | |
| 4465 | // Copy object header. |
| 4466 | ASSERT(object->properties()->length() == 0); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4467 | int inobject_properties = object->map()->inobject_properties(); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4468 | int header_size = object_size - inobject_properties * kPointerSize; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4469 | for (int i = 0; i < header_size; i += kPointerSize) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4470 | if (has_elements && i == JSObject::kElementsOffset) { |
| 4471 | __ lea(ecx, Operand(result, elements_offset)); |
| 4472 | } else { |
| 4473 | __ mov(ecx, FieldOperand(source, i)); |
| 4474 | } |
| 4475 | __ mov(FieldOperand(result, object_offset + i), ecx); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4476 | } |
| 4477 | |
| 4478 | // Copy in-object properties. |
| 4479 | for (int i = 0; i < inobject_properties; i++) { |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4480 | int total_offset = object_offset + object->GetInObjectPropertyOffset(i); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4481 | Handle<Object> value = Handle<Object>(object->InObjectPropertyAt(i)); |
| 4482 | if (value->IsJSObject()) { |
| 4483 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4484 | __ lea(ecx, Operand(result, *offset)); |
| 4485 | __ mov(FieldOperand(result, total_offset), ecx); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4486 | __ LoadHeapObject(source, value_object); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4487 | EmitDeepCopy(value_object, result, source, offset); |
| 4488 | } else if (value->IsHeapObject()) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4489 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4490 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4491 | } else { |
| 4492 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4493 | } |
| 4494 | } |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4495 | |
| 4496 | // Copy elements backing store header. |
| 4497 | ASSERT(!has_elements || elements->IsFixedArray()); |
| 4498 | if (has_elements) { |
| 4499 | __ LoadHeapObject(source, elements); |
| 4500 | for (int i = 0; i < FixedArray::kHeaderSize; i += kPointerSize) { |
| 4501 | __ mov(ecx, FieldOperand(source, i)); |
| 4502 | __ mov(FieldOperand(result, elements_offset + i), ecx); |
| 4503 | } |
| 4504 | } |
| 4505 | |
| 4506 | // Copy elements backing store content. |
| 4507 | ASSERT(!has_elements || elements->IsFixedArray()); |
| 4508 | int elements_length = has_elements ? elements->length() : 0; |
| 4509 | for (int i = 0; i < elements_length; i++) { |
| 4510 | int total_offset = elements_offset + FixedArray::OffsetOfElementAt(i); |
| 4511 | Handle<Object> value = JSObject::GetElement(object, i); |
| 4512 | if (value->IsJSObject()) { |
| 4513 | Handle<JSObject> value_object = Handle<JSObject>::cast(value); |
| 4514 | __ lea(ecx, Operand(result, *offset)); |
| 4515 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4516 | __ LoadHeapObject(source, value_object); |
| 4517 | EmitDeepCopy(value_object, result, source, offset); |
| 4518 | } else if (value->IsHeapObject()) { |
| 4519 | __ LoadHeapObject(ecx, Handle<HeapObject>::cast(value)); |
| 4520 | __ mov(FieldOperand(result, total_offset), ecx); |
| 4521 | } else { |
| 4522 | __ mov(FieldOperand(result, total_offset), Immediate(value)); |
| 4523 | } |
| 4524 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4525 | } |
| 4526 | |
| 4527 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4528 | void LCodeGen::DoFastLiteral(LFastLiteral* instr) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4529 | ASSERT(ToRegister(instr->context()).is(esi)); |
| 4530 | int size = instr->hydrogen()->total_size(); |
| 4531 | |
| 4532 | // Allocate all objects that are part of the literal in one big |
| 4533 | // allocation. This avoids multiple limit checks. |
| 4534 | Label allocated, runtime_allocate; |
| 4535 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 4536 | __ jmp(&allocated); |
| 4537 | |
| 4538 | __ bind(&runtime_allocate); |
| 4539 | __ push(Immediate(Smi::FromInt(size))); |
| 4540 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
| 4541 | |
| 4542 | __ bind(&allocated); |
| 4543 | int offset = 0; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4544 | __ LoadHeapObject(ebx, instr->hydrogen()->boilerplate()); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4545 | EmitDeepCopy(instr->hydrogen()->boilerplate(), eax, ebx, &offset); |
| 4546 | ASSERT_EQ(size, offset); |
| 4547 | } |
| 4548 | |
| 4549 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 4550 | void LCodeGen::DoObjectLiteral(LObjectLiteral* instr) { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 4551 | ASSERT(ToRegister(instr->context()).is(esi)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4552 | Handle<FixedArray> literals(instr->environment()->closure()->literals()); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4553 | Handle<FixedArray> constant_properties = |
| 4554 | instr->hydrogen()->constant_properties(); |
| 4555 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4556 | // Set up the parameters to the stub/runtime call. |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4557 | __ PushHeapObject(literals); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4558 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4559 | __ push(Immediate(constant_properties)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4560 | int flags = instr->hydrogen()->fast_elements() |
| 4561 | ? ObjectLiteral::kFastElements |
| 4562 | : ObjectLiteral::kNoFlags; |
| 4563 | flags |= instr->hydrogen()->has_function() |
| 4564 | ? ObjectLiteral::kHasFunction |
| 4565 | : ObjectLiteral::kNoFlags; |
| 4566 | __ push(Immediate(Smi::FromInt(flags))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4567 | |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4568 | // Pick the right runtime function or stub to call. |
| 4569 | int properties_count = constant_properties->length() / 2; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4570 | if (instr->hydrogen()->depth() > 1) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4571 | CallRuntime(Runtime::kCreateObjectLiteral, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4572 | } else if (flags != ObjectLiteral::kFastElements || |
| 4573 | properties_count > FastCloneShallowObjectStub::kMaximumClonedProperties) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4574 | CallRuntime(Runtime::kCreateObjectLiteralShallow, 4, instr); |
mstarzinger@chromium.org | f8c6bd5 | 2011-11-23 12:13:52 +0000 | [diff] [blame] | 4575 | } else { |
| 4576 | FastCloneShallowObjectStub stub(properties_count); |
| 4577 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4578 | } |
| 4579 | } |
| 4580 | |
| 4581 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4582 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
| 4583 | ASSERT(ToRegister(instr->InputAt(0)).is(eax)); |
| 4584 | __ push(eax); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4585 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4586 | } |
| 4587 | |
| 4588 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4589 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4590 | ASSERT(ToRegister(instr->context()).is(esi)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4591 | Label materialized; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4592 | // Registers will be used as follows: |
| 4593 | // edi = JS function. |
| 4594 | // ecx = literals array. |
| 4595 | // ebx = regexp literal. |
| 4596 | // eax = regexp literal clone. |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4597 | // esi = context. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4598 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 4599 | __ mov(ecx, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
| 4600 | int literal_offset = FixedArray::kHeaderSize + |
| 4601 | instr->hydrogen()->literal_index() * kPointerSize; |
| 4602 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4603 | __ cmp(ebx, factory()->undefined_value()); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4604 | __ j(not_equal, &materialized, Label::kNear); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4605 | |
| 4606 | // Create regexp literal using runtime function |
| 4607 | // Result will be in eax. |
| 4608 | __ push(ecx); |
| 4609 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 4610 | __ push(Immediate(instr->hydrogen()->pattern())); |
| 4611 | __ push(Immediate(instr->hydrogen()->flags())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4612 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4613 | __ mov(ebx, eax); |
| 4614 | |
| 4615 | __ bind(&materialized); |
| 4616 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 4617 | Label allocated, runtime_allocate; |
| 4618 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 4619 | __ jmp(&allocated); |
| 4620 | |
| 4621 | __ bind(&runtime_allocate); |
| 4622 | __ push(ebx); |
| 4623 | __ push(Immediate(Smi::FromInt(size))); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4624 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4625 | __ pop(ebx); |
| 4626 | |
| 4627 | __ bind(&allocated); |
| 4628 | // Copy the content into the newly allocated memory. |
| 4629 | // (Unroll copy loop once for better throughput). |
| 4630 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 4631 | __ mov(edx, FieldOperand(ebx, i)); |
| 4632 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 4633 | __ mov(FieldOperand(eax, i), edx); |
| 4634 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 4635 | } |
| 4636 | if ((size % (2 * kPointerSize)) != 0) { |
| 4637 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 4638 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 4639 | } |
| 4640 | } |
| 4641 | |
| 4642 | |
| 4643 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4644 | ASSERT(ToRegister(instr->context()).is(esi)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4645 | // Use the fast case closure allocation code that allocates in new |
| 4646 | // space for nested functions that don't need literals cloning. |
| 4647 | Handle<SharedFunctionInfo> shared_info = instr->shared_info(); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 4648 | bool pretenure = instr->hydrogen()->pretenure(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4649 | if (!pretenure && shared_info->num_literals() == 0) { |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4650 | FastNewClosureStub stub(shared_info->language_mode()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4651 | __ push(Immediate(shared_info)); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4652 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4653 | } else { |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 4654 | __ push(esi); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4655 | __ push(Immediate(shared_info)); |
| 4656 | __ push(Immediate(pretenure |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4657 | ? factory()->true_value() |
| 4658 | : factory()->false_value())); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4659 | CallRuntime(Runtime::kNewClosure, 3, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4660 | } |
| 4661 | } |
| 4662 | |
| 4663 | |
| 4664 | void LCodeGen::DoTypeof(LTypeof* instr) { |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4665 | LOperand* input = instr->InputAt(1); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4666 | EmitPushTaggedOperand(input); |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4667 | CallRuntime(Runtime::kTypeof, 1, instr); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4668 | } |
| 4669 | |
| 4670 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4671 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 4672 | Register input = ToRegister(instr->InputAt(0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4673 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 4674 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 4675 | Label* true_label = chunk_->GetAssemblyLabel(true_block); |
| 4676 | Label* false_label = chunk_->GetAssemblyLabel(false_block); |
| 4677 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 4678 | Condition final_branch_condition = |
| 4679 | EmitTypeofIs(true_label, false_label, input, instr->type_literal()); |
| 4680 | if (final_branch_condition != no_condition) { |
| 4681 | EmitBranch(true_block, false_block, final_branch_condition); |
| 4682 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4683 | } |
| 4684 | |
| 4685 | |
| 4686 | Condition LCodeGen::EmitTypeofIs(Label* true_label, |
| 4687 | Label* false_label, |
| 4688 | Register input, |
| 4689 | Handle<String> type_name) { |
| 4690 | Condition final_branch_condition = no_condition; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4691 | if (type_name->Equals(heap()->number_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4692 | __ JumpIfSmi(input, true_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4693 | __ cmp(FieldOperand(input, HeapObject::kMapOffset), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4694 | factory()->heap_number_map()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4695 | final_branch_condition = equal; |
| 4696 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4697 | } else if (type_name->Equals(heap()->string_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4698 | __ JumpIfSmi(input, false_label); |
| 4699 | __ CmpObjectType(input, FIRST_NONSTRING_TYPE, input); |
| 4700 | __ j(above_equal, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4701 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4702 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4703 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4704 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4705 | } else if (type_name->Equals(heap()->boolean_symbol())) { |
| 4706 | __ cmp(input, factory()->true_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4707 | __ j(equal, true_label); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4708 | __ cmp(input, factory()->false_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4709 | final_branch_condition = equal; |
| 4710 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 4711 | } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_symbol())) { |
| 4712 | __ cmp(input, factory()->null_value()); |
| 4713 | final_branch_condition = equal; |
| 4714 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4715 | } else if (type_name->Equals(heap()->undefined_symbol())) { |
| 4716 | __ cmp(input, factory()->undefined_value()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4717 | __ j(equal, true_label); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4718 | __ JumpIfSmi(input, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4719 | // Check for undetectable objects => true. |
| 4720 | __ mov(input, FieldOperand(input, HeapObject::kMapOffset)); |
| 4721 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4722 | 1 << Map::kIsUndetectable); |
| 4723 | final_branch_condition = not_zero; |
| 4724 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4725 | } else if (type_name->Equals(heap()->function_symbol())) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4726 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4727 | __ JumpIfSmi(input, false_label); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4728 | __ CmpObjectType(input, JS_FUNCTION_TYPE, input); |
| 4729 | __ j(equal, true_label); |
| 4730 | __ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE); |
| 4731 | final_branch_condition = equal; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4732 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4733 | } else if (type_name->Equals(heap()->object_symbol())) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4734 | __ JumpIfSmi(input, false_label); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 4735 | if (!FLAG_harmony_typeof) { |
| 4736 | __ cmp(input, factory()->null_value()); |
| 4737 | __ j(equal, true_label); |
| 4738 | } |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 4739 | __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4740 | __ j(below, false_label); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 4741 | __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
| 4742 | __ j(above, false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4743 | // Check for undetectable objects => false. |
| 4744 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 4745 | 1 << Map::kIsUndetectable); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 4746 | final_branch_condition = zero; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4747 | |
| 4748 | } else { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4749 | __ jmp(false_label); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4750 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4751 | return final_branch_condition; |
| 4752 | } |
| 4753 | |
| 4754 | |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 4755 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
| 4756 | Register temp = ToRegister(instr->TempAt(0)); |
| 4757 | int true_block = chunk_->LookupDestination(instr->true_block_id()); |
| 4758 | int false_block = chunk_->LookupDestination(instr->false_block_id()); |
| 4759 | |
| 4760 | EmitIsConstructCall(temp); |
| 4761 | EmitBranch(true_block, false_block, equal); |
| 4762 | } |
| 4763 | |
| 4764 | |
| 4765 | void LCodeGen::EmitIsConstructCall(Register temp) { |
| 4766 | // Get the frame pointer for the calling frame. |
| 4767 | __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 4768 | |
| 4769 | // Skip the arguments adaptor frame if it exists. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4770 | Label check_frame_marker; |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 4771 | __ cmp(Operand(temp, StandardFrameConstants::kContextOffset), |
| 4772 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 4773 | __ j(not_equal, &check_frame_marker, Label::kNear); |
erik.corry@gmail.com | d91075f | 2011-02-10 07:45:38 +0000 | [diff] [blame] | 4774 | __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset)); |
| 4775 | |
| 4776 | // Check the marker in the calling frame. |
| 4777 | __ bind(&check_frame_marker); |
| 4778 | __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset), |
| 4779 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 4780 | } |
| 4781 | |
| 4782 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4783 | void LCodeGen::EnsureSpaceForLazyDeopt() { |
| 4784 | // Ensure that we have enough space after the previous lazy-bailout |
| 4785 | // instruction for patching the code here. |
| 4786 | int current_pc = masm()->pc_offset(); |
| 4787 | int patch_size = Deoptimizer::patch_size(); |
| 4788 | if (current_pc < last_lazy_deopt_pc_ + patch_size) { |
| 4789 | int padding_size = last_lazy_deopt_pc_ + patch_size - current_pc; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4790 | __ Nop(padding_size); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4791 | } |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4792 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4793 | } |
| 4794 | |
| 4795 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4796 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4797 | EnsureSpaceForLazyDeopt(); |
| 4798 | ASSERT(instr->HasEnvironment()); |
| 4799 | LEnvironment* env = instr->environment(); |
| 4800 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 4801 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4802 | } |
| 4803 | |
| 4804 | |
| 4805 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
| 4806 | DeoptimizeIf(no_condition, instr->environment()); |
| 4807 | } |
| 4808 | |
| 4809 | |
| 4810 | void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) { |
| 4811 | LOperand* obj = instr->object(); |
| 4812 | LOperand* key = instr->key(); |
| 4813 | __ push(ToOperand(obj)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4814 | EmitPushTaggedOperand(key); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 4815 | ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment()); |
| 4816 | LPointerMap* pointers = instr->pointer_map(); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 4817 | RecordPosition(pointers->position()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4818 | // Create safepoint generator that will also ensure enough space in the |
| 4819 | // reloc info for patching in deoptimization (since this is invoking a |
| 4820 | // builtin) |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4821 | SafepointGenerator safepoint_generator( |
| 4822 | this, pointers, Safepoint::kLazyDeopt); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4823 | __ push(Immediate(Smi::FromInt(strict_mode_flag()))); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 4824 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION, safepoint_generator); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4825 | } |
| 4826 | |
| 4827 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4828 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4829 | PushSafepointRegistersScope scope(this); |
| 4830 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4831 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 4832 | RecordSafepointWithLazyDeopt( |
| 4833 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
| 4834 | ASSERT(instr->HasEnvironment()); |
| 4835 | LEnvironment* env = instr->environment(); |
| 4836 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4837 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4838 | |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4839 | |
| 4840 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
| 4841 | class DeferredStackCheck: public LDeferredCode { |
| 4842 | public: |
| 4843 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 4844 | : LDeferredCode(codegen), instr_(instr) { } |
| 4845 | virtual void Generate() { codegen()->DoDeferredStackCheck(instr_); } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4846 | virtual LInstruction* instr() { return instr_; } |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4847 | private: |
| 4848 | LStackCheck* instr_; |
| 4849 | }; |
| 4850 | |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4851 | ASSERT(instr->HasEnvironment()); |
| 4852 | LEnvironment* env = instr->environment(); |
| 4853 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 4854 | // prepare for lazy deoptimization explicitly here. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4855 | if (instr->hydrogen()->is_function_entry()) { |
| 4856 | // Perform stack overflow check. |
| 4857 | Label done; |
| 4858 | ExternalReference stack_limit = |
| 4859 | ExternalReference::address_of_stack_limit(isolate()); |
| 4860 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 4861 | __ j(above_equal, &done, Label::kNear); |
| 4862 | |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4863 | ASSERT(instr->context()->IsRegister()); |
| 4864 | ASSERT(ToRegister(instr->context()).is(esi)); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4865 | StackCheckStub stub; |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4866 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4867 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4868 | __ bind(&done); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4869 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 4870 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4871 | } else { |
| 4872 | ASSERT(instr->hydrogen()->is_backwards_branch()); |
| 4873 | // Perform stack overflow check if this goto needs it before jumping. |
| 4874 | DeferredStackCheck* deferred_stack_check = |
| 4875 | new DeferredStackCheck(this, instr); |
| 4876 | ExternalReference stack_limit = |
| 4877 | ExternalReference::address_of_stack_limit(isolate()); |
| 4878 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 4879 | __ j(below, deferred_stack_check->entry()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4880 | EnsureSpaceForLazyDeopt(); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4881 | __ bind(instr->done_label()); |
| 4882 | deferred_stack_check->SetExit(instr->done_label()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4883 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 4884 | // Don't record a deoptimization index for the safepoint here. |
| 4885 | // This will be done explicitly when emitting call and the safepoint in |
| 4886 | // the deferred code. |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 4887 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4888 | } |
| 4889 | |
| 4890 | |
| 4891 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 4892 | // This is a pseudo-instruction that ensures that the environment here is |
| 4893 | // properly registered for deoptimization and records the assembler's PC |
| 4894 | // offset. |
| 4895 | LEnvironment* environment = instr->environment(); |
| 4896 | environment->SetSpilledRegisters(instr->SpilledRegisterArray(), |
| 4897 | instr->SpilledDoubleRegisterArray()); |
| 4898 | |
| 4899 | // If the environment were already registered, we would have no way of |
| 4900 | // backpatching it with the spill slot operands. |
| 4901 | ASSERT(!environment->HasBeenRegistered()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4902 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4903 | ASSERT(osr_pc_offset_ == -1); |
| 4904 | osr_pc_offset_ = masm()->pc_offset(); |
| 4905 | } |
| 4906 | |
| 4907 | |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 4908 | void LCodeGen::DoIn(LIn* instr) { |
| 4909 | LOperand* obj = instr->object(); |
| 4910 | LOperand* key = instr->key(); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 4911 | EmitPushTaggedOperand(key); |
| 4912 | EmitPushTaggedOperand(obj); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 4913 | ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment()); |
| 4914 | LPointerMap* pointers = instr->pointer_map(); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 4915 | RecordPosition(pointers->position()); |
ricow@chromium.org | 27bf288 | 2011-11-17 08:34:43 +0000 | [diff] [blame] | 4916 | SafepointGenerator safepoint_generator( |
| 4917 | this, pointers, Safepoint::kLazyDeopt); |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 4918 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION, safepoint_generator); |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 4919 | } |
| 4920 | |
| 4921 | |
kmillikin@chromium.org | be6bd10 | 2012-02-23 08:45:21 +0000 | [diff] [blame] | 4922 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
| 4923 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 4924 | DeoptimizeIf(equal, instr->environment()); |
| 4925 | |
| 4926 | __ cmp(eax, isolate()->factory()->null_value()); |
| 4927 | DeoptimizeIf(equal, instr->environment()); |
| 4928 | |
| 4929 | __ test(eax, Immediate(kSmiTagMask)); |
| 4930 | DeoptimizeIf(zero, instr->environment()); |
| 4931 | |
| 4932 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 4933 | __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
| 4934 | DeoptimizeIf(below_equal, instr->environment()); |
| 4935 | |
| 4936 | Label use_cache, call_runtime; |
| 4937 | __ CheckEnumCache(&call_runtime); |
| 4938 | |
| 4939 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 4940 | __ jmp(&use_cache, Label::kNear); |
| 4941 | |
| 4942 | // Get the set of properties to enumerate. |
| 4943 | __ bind(&call_runtime); |
| 4944 | __ push(eax); |
| 4945 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 4946 | |
| 4947 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 4948 | isolate()->factory()->meta_map()); |
| 4949 | DeoptimizeIf(not_equal, instr->environment()); |
| 4950 | __ bind(&use_cache); |
| 4951 | } |
| 4952 | |
| 4953 | |
| 4954 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 4955 | Register map = ToRegister(instr->map()); |
| 4956 | Register result = ToRegister(instr->result()); |
| 4957 | __ LoadInstanceDescriptors(map, result); |
| 4958 | __ mov(result, |
| 4959 | FieldOperand(result, DescriptorArray::kEnumerationIndexOffset)); |
| 4960 | __ mov(result, |
| 4961 | FieldOperand(result, FixedArray::SizeFor(instr->idx()))); |
| 4962 | __ test(result, result); |
| 4963 | DeoptimizeIf(equal, instr->environment()); |
| 4964 | } |
| 4965 | |
| 4966 | |
| 4967 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 4968 | Register object = ToRegister(instr->value()); |
| 4969 | __ cmp(ToRegister(instr->map()), |
| 4970 | FieldOperand(object, HeapObject::kMapOffset)); |
| 4971 | DeoptimizeIf(not_equal, instr->environment()); |
| 4972 | } |
| 4973 | |
| 4974 | |
| 4975 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
| 4976 | Register object = ToRegister(instr->object()); |
| 4977 | Register index = ToRegister(instr->index()); |
| 4978 | |
| 4979 | Label out_of_object, done; |
| 4980 | __ cmp(index, Immediate(0)); |
| 4981 | __ j(less, &out_of_object); |
| 4982 | __ mov(object, FieldOperand(object, |
| 4983 | index, |
| 4984 | times_half_pointer_size, |
| 4985 | JSObject::kHeaderSize)); |
| 4986 | __ jmp(&done, Label::kNear); |
| 4987 | |
| 4988 | __ bind(&out_of_object); |
| 4989 | __ mov(object, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 4990 | __ neg(index); |
| 4991 | // Index is now equal to out of object property index plus 1. |
| 4992 | __ mov(object, FieldOperand(object, |
| 4993 | index, |
| 4994 | times_half_pointer_size, |
| 4995 | FixedArray::kHeaderSize - kPointerSize)); |
| 4996 | __ bind(&done); |
| 4997 | } |
| 4998 | |
| 4999 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 5000 | #undef __ |
| 5001 | |
| 5002 | } } // namespace v8::internal |
sgjesse@chromium.org | c6c5718 | 2011-01-17 12:24:25 +0000 | [diff] [blame] | 5003 | |
| 5004 | #endif // V8_TARGET_ARCH_IA32 |