Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #include "src/v8.h" |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #if V8_TARGET_ARCH_IA32 |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/base/bits.h" |
| 10 | #include "src/code-factory.h" |
| 11 | #include "src/code-stubs.h" |
| 12 | #include "src/codegen.h" |
| 13 | #include "src/deoptimizer.h" |
| 14 | #include "src/hydrogen-osr.h" |
| 15 | #include "src/ia32/lithium-codegen-ia32.h" |
| 16 | #include "src/ic/ic.h" |
| 17 | #include "src/ic/stub-cache.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 18 | |
| 19 | namespace v8 { |
| 20 | namespace internal { |
| 21 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 22 | // When invoking builtins, we need to record the safepoint in the middle of |
| 23 | // the invoke instruction sequence generated by the macro assembler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 24 | class SafepointGenerator FINAL : public CallWrapper { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 25 | public: |
| 26 | SafepointGenerator(LCodeGen* codegen, |
| 27 | LPointerMap* pointers, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 28 | Safepoint::DeoptMode mode) |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 29 | : codegen_(codegen), |
| 30 | pointers_(pointers), |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 31 | deopt_mode_(mode) {} |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | virtual ~SafepointGenerator() {} |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 33 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 34 | void BeforeCall(int call_size) const OVERRIDE {} |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 35 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 36 | void AfterCall() const OVERRIDE { |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 37 | codegen_->RecordSafepoint(pointers_, deopt_mode_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 38 | } |
| 39 | |
| 40 | private: |
| 41 | LCodeGen* codegen_; |
| 42 | LPointerMap* pointers_; |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 43 | Safepoint::DeoptMode deopt_mode_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 44 | }; |
| 45 | |
| 46 | |
| 47 | #define __ masm()-> |
| 48 | |
| 49 | bool LCodeGen::GenerateCode() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 50 | LPhase phase("Z_Code generation", chunk()); |
| 51 | DCHECK(is_unused()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 52 | status_ = GENERATING; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 53 | |
| 54 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 55 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 56 | // the frame (that is done in GeneratePrologue). |
| 57 | FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 58 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 59 | support_aligned_spilled_doubles_ = info()->IsOptimizing(); |
| 60 | |
| 61 | dynamic_frame_alignment_ = info()->IsOptimizing() && |
| 62 | ((chunk()->num_double_slots() > 2 && |
| 63 | !chunk()->graph()->is_recursive()) || |
| 64 | !info()->osr_ast_id().IsNone()); |
| 65 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 66 | return GeneratePrologue() && |
| 67 | GenerateBody() && |
| 68 | GenerateDeferredCode() && |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 69 | GenerateJumpTable() && |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 70 | GenerateSafepointTable(); |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void LCodeGen::FinishCode(Handle<Code> code) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 75 | DCHECK(is_done()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 76 | code->set_stack_slots(GetStackSlotCount()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 77 | code->set_safepoint_table_offset(safepoints_.GetCodeOffset()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 78 | if (code->is_optimized_code()) RegisterWeakObjectsInOptimizedCode(code); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 79 | PopulateDeoptimizationData(code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 80 | if (!info()->IsStub()) { |
| 81 | Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(code); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 82 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 86 | #ifdef _MSC_VER |
| 87 | void LCodeGen::MakeSureStackPagesMapped(int offset) { |
| 88 | const int kPageSize = 4 * KB; |
| 89 | for (offset -= kPageSize; offset > 0; offset -= kPageSize) { |
| 90 | __ mov(Operand(esp, offset), eax); |
| 91 | } |
| 92 | } |
| 93 | #endif |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 94 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 95 | |
| 96 | void LCodeGen::SaveCallerDoubles() { |
| 97 | DCHECK(info()->saves_caller_doubles()); |
| 98 | DCHECK(NeedsEagerFrame()); |
| 99 | Comment(";;; Save clobbered callee double registers"); |
| 100 | int count = 0; |
| 101 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 102 | BitVector::Iterator save_iterator(doubles); |
| 103 | while (!save_iterator.Done()) { |
| 104 | __ movsd(MemOperand(esp, count * kDoubleSize), |
| 105 | XMMRegister::FromAllocationIndex(save_iterator.Current())); |
| 106 | save_iterator.Advance(); |
| 107 | count++; |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void LCodeGen::RestoreCallerDoubles() { |
| 113 | DCHECK(info()->saves_caller_doubles()); |
| 114 | DCHECK(NeedsEagerFrame()); |
| 115 | Comment(";;; Restore clobbered callee double registers"); |
| 116 | BitVector* doubles = chunk()->allocated_double_registers(); |
| 117 | BitVector::Iterator save_iterator(doubles); |
| 118 | int count = 0; |
| 119 | while (!save_iterator.Done()) { |
| 120 | __ movsd(XMMRegister::FromAllocationIndex(save_iterator.Current()), |
| 121 | MemOperand(esp, count * kDoubleSize)); |
| 122 | save_iterator.Advance(); |
| 123 | count++; |
| 124 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | |
| 128 | bool LCodeGen::GeneratePrologue() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 129 | DCHECK(is_generating()); |
| 130 | |
| 131 | if (info()->IsOptimizing()) { |
| 132 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 133 | |
| 134 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 135 | if (strlen(FLAG_stop_at) > 0 && |
| 136 | info_->function()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 137 | __ int3(); |
| 138 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 139 | #endif |
| 140 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 141 | // Sloppy mode functions and builtins need to replace the receiver with the |
| 142 | // global proxy when called as functions (without an explicit receiver |
| 143 | // object). |
| 144 | if (info_->this_has_uses() && |
| 145 | info_->strict_mode() == SLOPPY && |
| 146 | !info_->is_native()) { |
| 147 | Label ok; |
| 148 | // +1 for return address. |
| 149 | int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 150 | __ mov(ecx, Operand(esp, receiver_offset)); |
| 151 | |
| 152 | __ cmp(ecx, isolate()->factory()->undefined_value()); |
| 153 | __ j(not_equal, &ok, Label::kNear); |
| 154 | |
| 155 | __ mov(ecx, GlobalObjectOperand()); |
| 156 | __ mov(ecx, FieldOperand(ecx, GlobalObject::kGlobalProxyOffset)); |
| 157 | |
| 158 | __ mov(Operand(esp, receiver_offset), ecx); |
| 159 | |
| 160 | __ bind(&ok); |
| 161 | } |
| 162 | |
| 163 | if (support_aligned_spilled_doubles_ && dynamic_frame_alignment_) { |
| 164 | // Move state of dynamic frame alignment into edx. |
| 165 | __ Move(edx, Immediate(kNoAlignmentPadding)); |
| 166 | |
| 167 | Label do_not_pad, align_loop; |
| 168 | STATIC_ASSERT(kDoubleSize == 2 * kPointerSize); |
| 169 | // Align esp + 4 to a multiple of 2 * kPointerSize. |
| 170 | __ test(esp, Immediate(kPointerSize)); |
| 171 | __ j(not_zero, &do_not_pad, Label::kNear); |
| 172 | __ push(Immediate(0)); |
| 173 | __ mov(ebx, esp); |
| 174 | __ mov(edx, Immediate(kAlignmentPaddingPushed)); |
| 175 | // Copy arguments, receiver, and return address. |
| 176 | __ mov(ecx, Immediate(scope()->num_parameters() + 2)); |
| 177 | |
| 178 | __ bind(&align_loop); |
| 179 | __ mov(eax, Operand(ebx, 1 * kPointerSize)); |
| 180 | __ mov(Operand(ebx, 0), eax); |
| 181 | __ add(Operand(ebx), Immediate(kPointerSize)); |
| 182 | __ dec(ecx); |
| 183 | __ j(not_zero, &align_loop, Label::kNear); |
| 184 | __ mov(Operand(ebx, 0), Immediate(kAlignmentZapValue)); |
| 185 | __ bind(&do_not_pad); |
| 186 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 187 | } |
| 188 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 189 | info()->set_prologue_offset(masm_->pc_offset()); |
| 190 | if (NeedsEagerFrame()) { |
| 191 | DCHECK(!frame_is_built_); |
| 192 | frame_is_built_ = true; |
| 193 | if (info()->IsStub()) { |
| 194 | __ StubPrologue(); |
| 195 | } else { |
| 196 | __ Prologue(info()->IsCodePreAgingActive()); |
| 197 | } |
| 198 | info()->AddNoFrameRange(0, masm_->pc_offset()); |
| 199 | } |
| 200 | |
| 201 | if (info()->IsOptimizing() && |
| 202 | dynamic_frame_alignment_ && |
| 203 | FLAG_debug_code) { |
| 204 | __ test(esp, Immediate(kPointerSize)); |
| 205 | __ Assert(zero, kFrameIsExpectedToBeAligned); |
| 206 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 207 | |
| 208 | // Reserve space for the stack slots needed by the code. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 209 | int slots = GetStackSlotCount(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 210 | DCHECK(slots != 0 || !info()->IsOptimizing()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 211 | if (slots > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 212 | if (slots == 1) { |
| 213 | if (dynamic_frame_alignment_) { |
| 214 | __ push(edx); |
| 215 | } else { |
| 216 | __ push(Immediate(kNoAlignmentPadding)); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 217 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | } else { |
| 219 | if (FLAG_debug_code) { |
| 220 | __ sub(Operand(esp), Immediate(slots * kPointerSize)); |
| 221 | #ifdef _MSC_VER |
| 222 | MakeSureStackPagesMapped(slots * kPointerSize); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 223 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 224 | __ push(eax); |
| 225 | __ mov(Operand(eax), Immediate(slots)); |
| 226 | Label loop; |
| 227 | __ bind(&loop); |
| 228 | __ mov(MemOperand(esp, eax, times_4, 0), |
| 229 | Immediate(kSlotsZapValue)); |
| 230 | __ dec(eax); |
| 231 | __ j(not_zero, &loop); |
| 232 | __ pop(eax); |
| 233 | } else { |
| 234 | __ sub(Operand(esp), Immediate(slots * kPointerSize)); |
| 235 | #ifdef _MSC_VER |
| 236 | MakeSureStackPagesMapped(slots * kPointerSize); |
| 237 | #endif |
| 238 | } |
| 239 | |
| 240 | if (support_aligned_spilled_doubles_) { |
| 241 | Comment(";;; Store dynamic frame alignment tag for spilled doubles"); |
| 242 | // Store dynamic frame alignment state in the first local. |
| 243 | int offset = JavaScriptFrameConstants::kDynamicAlignmentStateOffset; |
| 244 | if (dynamic_frame_alignment_) { |
| 245 | __ mov(Operand(ebp, offset), edx); |
| 246 | } else { |
| 247 | __ mov(Operand(ebp, offset), Immediate(kNoAlignmentPadding)); |
| 248 | } |
| 249 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 250 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 251 | |
| 252 | if (info()->saves_caller_doubles()) SaveCallerDoubles(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 253 | } |
| 254 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 255 | // Possibly allocate a local context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 256 | int heap_slots = info_->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 257 | if (heap_slots > 0) { |
| 258 | Comment(";;; Allocate local context"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 259 | bool need_write_barrier = true; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 260 | // Argument to NewContext is the function, which is still in edi. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 261 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 262 | FastNewContextStub stub(isolate(), heap_slots); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 263 | __ CallStub(&stub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 264 | // Result of FastNewContextStub is always in new space. |
| 265 | need_write_barrier = false; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 266 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 267 | __ push(edi); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 268 | __ CallRuntime(Runtime::kNewFunctionContext, 1); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 269 | } |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 270 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 271 | // Context is returned in eax. It replaces the context passed to us. |
| 272 | // It's saved in the stack and kept live in esi. |
| 273 | __ mov(esi, eax); |
| 274 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), eax); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 275 | |
| 276 | // Copy parameters into context if necessary. |
| 277 | int num_parameters = scope()->num_parameters(); |
| 278 | for (int i = 0; i < num_parameters; i++) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 279 | Variable* var = scope()->parameter(i); |
| 280 | if (var->IsContextSlot()) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 281 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 282 | (num_parameters - 1 - i) * kPointerSize; |
| 283 | // Load parameter from stack. |
| 284 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 285 | // Store it in the context. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 286 | int context_offset = Context::SlotOffset(var->index()); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 287 | __ mov(Operand(esi, context_offset), eax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 288 | // Update the write barrier. This clobbers eax and ebx. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 289 | if (need_write_barrier) { |
| 290 | __ RecordWriteContextSlot(esi, |
| 291 | context_offset, |
| 292 | eax, |
| 293 | ebx, |
| 294 | kDontSaveFPRegs); |
| 295 | } else if (FLAG_debug_code) { |
| 296 | Label done; |
| 297 | __ JumpIfInNewSpace(esi, eax, &done, Label::kNear); |
| 298 | __ Abort(kExpectedNewSpaceObject); |
| 299 | __ bind(&done); |
| 300 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 301 | } |
| 302 | } |
| 303 | Comment(";;; End allocate local context"); |
| 304 | } |
| 305 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 306 | // Trace the call. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 307 | if (FLAG_trace && info()->IsOptimizing()) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 308 | // We have not executed any compiled code yet, so esi still holds the |
| 309 | // incoming context. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 310 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 311 | } |
| 312 | return !is_aborted(); |
| 313 | } |
| 314 | |
| 315 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 316 | void LCodeGen::GenerateOsrPrologue() { |
| 317 | // Generate the OSR entry prologue at the first unknown OSR value, or if there |
| 318 | // are none, at the OSR entrypoint instruction. |
| 319 | if (osr_pc_offset_ >= 0) return; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 320 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 321 | osr_pc_offset_ = masm()->pc_offset(); |
| 322 | |
| 323 | // Move state of dynamic frame alignment into edx. |
| 324 | __ Move(edx, Immediate(kNoAlignmentPadding)); |
| 325 | |
| 326 | if (support_aligned_spilled_doubles_ && dynamic_frame_alignment_) { |
| 327 | Label do_not_pad, align_loop; |
| 328 | // Align ebp + 4 to a multiple of 2 * kPointerSize. |
| 329 | __ test(ebp, Immediate(kPointerSize)); |
| 330 | __ j(zero, &do_not_pad, Label::kNear); |
| 331 | __ push(Immediate(0)); |
| 332 | __ mov(ebx, esp); |
| 333 | __ mov(edx, Immediate(kAlignmentPaddingPushed)); |
| 334 | |
| 335 | // Move all parts of the frame over one word. The frame consists of: |
| 336 | // unoptimized frame slots, alignment state, context, frame pointer, return |
| 337 | // address, receiver, and the arguments. |
| 338 | __ mov(ecx, Immediate(scope()->num_parameters() + |
| 339 | 5 + graph()->osr()->UnoptimizedFrameSlots())); |
| 340 | |
| 341 | __ bind(&align_loop); |
| 342 | __ mov(eax, Operand(ebx, 1 * kPointerSize)); |
| 343 | __ mov(Operand(ebx, 0), eax); |
| 344 | __ add(Operand(ebx), Immediate(kPointerSize)); |
| 345 | __ dec(ecx); |
| 346 | __ j(not_zero, &align_loop, Label::kNear); |
| 347 | __ mov(Operand(ebx, 0), Immediate(kAlignmentZapValue)); |
| 348 | __ sub(Operand(ebp), Immediate(kPointerSize)); |
| 349 | __ bind(&do_not_pad); |
| 350 | } |
| 351 | |
| 352 | // Save the first local, which is overwritten by the alignment state. |
| 353 | Operand alignment_loc = MemOperand(ebp, -3 * kPointerSize); |
| 354 | __ push(alignment_loc); |
| 355 | |
| 356 | // Set the dynamic frame alignment state. |
| 357 | __ mov(alignment_loc, edx); |
| 358 | |
| 359 | // Adjust the frame size, subsuming the unoptimized frame into the |
| 360 | // optimized frame. |
| 361 | int slots = GetStackSlotCount() - graph()->osr()->UnoptimizedFrameSlots(); |
| 362 | DCHECK(slots >= 1); |
| 363 | __ sub(esp, Immediate((slots - 1) * kPointerSize)); |
| 364 | } |
| 365 | |
| 366 | |
| 367 | void LCodeGen::GenerateBodyInstructionPre(LInstruction* instr) { |
| 368 | if (instr->IsCall()) { |
| 369 | EnsureSpaceForLazyDeopt(Deoptimizer::patch_size()); |
| 370 | } |
| 371 | if (!instr->IsLazyBailout() && !instr->IsGap()) { |
| 372 | safepoints_.BumpLastLazySafepointIndex(); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | |
| 377 | void LCodeGen::GenerateBodyInstructionPost(LInstruction* instr) { } |
| 378 | |
| 379 | |
| 380 | bool LCodeGen::GenerateJumpTable() { |
| 381 | Label needs_frame; |
| 382 | if (jump_table_.length() > 0) { |
| 383 | Comment(";;; -------------------- Jump table --------------------"); |
| 384 | } |
| 385 | for (int i = 0; i < jump_table_.length(); i++) { |
| 386 | Deoptimizer::JumpTableEntry* table_entry = &jump_table_[i]; |
| 387 | __ bind(&table_entry->label); |
| 388 | Address entry = table_entry->address; |
| 389 | DeoptComment(table_entry->reason); |
| 390 | if (table_entry->needs_frame) { |
| 391 | DCHECK(!info()->saves_caller_doubles()); |
| 392 | __ push(Immediate(ExternalReference::ForDeoptEntry(entry))); |
| 393 | if (needs_frame.is_bound()) { |
| 394 | __ jmp(&needs_frame); |
| 395 | } else { |
| 396 | __ bind(&needs_frame); |
| 397 | __ push(MemOperand(ebp, StandardFrameConstants::kContextOffset)); |
| 398 | // This variant of deopt can only be used with stubs. Since we don't |
| 399 | // have a function pointer to install in the stack frame that we're |
| 400 | // building, install a special marker there instead. |
| 401 | DCHECK(info()->IsStub()); |
| 402 | __ push(Immediate(Smi::FromInt(StackFrame::STUB))); |
| 403 | // Push a PC inside the function so that the deopt code can find where |
| 404 | // the deopt comes from. It doesn't have to be the precise return |
| 405 | // address of a "calling" LAZY deopt, it only has to be somewhere |
| 406 | // inside the code body. |
| 407 | Label push_approx_pc; |
| 408 | __ call(&push_approx_pc); |
| 409 | __ bind(&push_approx_pc); |
| 410 | // Push the continuation which was stashed were the ebp should |
| 411 | // be. Replace it with the saved ebp. |
| 412 | __ push(MemOperand(esp, 3 * kPointerSize)); |
| 413 | __ mov(MemOperand(esp, 4 * kPointerSize), ebp); |
| 414 | __ lea(ebp, MemOperand(esp, 4 * kPointerSize)); |
| 415 | __ ret(0); // Call the continuation without clobbering registers. |
| 416 | } |
| 417 | } else { |
| 418 | if (info()->saves_caller_doubles()) RestoreCallerDoubles(); |
| 419 | __ call(entry, RelocInfo::RUNTIME_ENTRY); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 420 | } |
| 421 | } |
| 422 | return !is_aborted(); |
| 423 | } |
| 424 | |
| 425 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 426 | bool LCodeGen::GenerateDeferredCode() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 427 | DCHECK(is_generating()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 428 | if (deferred_.length() > 0) { |
| 429 | for (int i = 0; !is_aborted() && i < deferred_.length(); i++) { |
| 430 | LDeferredCode* code = deferred_[i]; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 431 | |
| 432 | HValue* value = |
| 433 | instructions_->at(code->instruction_index())->hydrogen_value(); |
| 434 | RecordAndWritePosition( |
| 435 | chunk()->graph()->SourcePositionToScriptPosition(value->position())); |
| 436 | |
| 437 | Comment(";;; <@%d,#%d> " |
| 438 | "-------------------- Deferred %s --------------------", |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 439 | code->instruction_index(), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 440 | code->instr()->hydrogen_value()->id(), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 441 | code->instr()->Mnemonic()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 442 | __ bind(code->entry()); |
| 443 | if (NeedsDeferredFrame()) { |
| 444 | Comment(";;; Build frame"); |
| 445 | DCHECK(!frame_is_built_); |
| 446 | DCHECK(info()->IsStub()); |
| 447 | frame_is_built_ = true; |
| 448 | // Build the frame in such a way that esi isn't trashed. |
| 449 | __ push(ebp); // Caller's frame pointer. |
| 450 | __ push(Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 451 | __ push(Immediate(Smi::FromInt(StackFrame::STUB))); |
| 452 | __ lea(ebp, Operand(esp, 2 * kPointerSize)); |
| 453 | Comment(";;; Deferred code"); |
| 454 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 455 | code->Generate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 456 | if (NeedsDeferredFrame()) { |
| 457 | __ bind(code->done()); |
| 458 | Comment(";;; Destroy frame"); |
| 459 | DCHECK(frame_is_built_); |
| 460 | frame_is_built_ = false; |
| 461 | __ mov(esp, ebp); |
| 462 | __ pop(ebp); |
| 463 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 464 | __ jmp(code->exit()); |
| 465 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | // Deferred code is the last part of the instruction sequence. Mark |
| 469 | // the generated code as done unless we bailed out. |
| 470 | if (!is_aborted()) status_ = DONE; |
| 471 | return !is_aborted(); |
| 472 | } |
| 473 | |
| 474 | |
| 475 | bool LCodeGen::GenerateSafepointTable() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 476 | DCHECK(is_done()); |
| 477 | if (!info()->IsStub()) { |
| 478 | // For lazy deoptimization we need space to patch a call after every call. |
| 479 | // Ensure there is always space for such patching, even if the code ends |
| 480 | // in a call. |
| 481 | int target_offset = masm()->pc_offset() + Deoptimizer::patch_size(); |
| 482 | while (masm()->pc_offset() < target_offset) { |
| 483 | masm()->nop(); |
| 484 | } |
| 485 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 486 | safepoints_.Emit(masm(), GetStackSlotCount()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 487 | return !is_aborted(); |
| 488 | } |
| 489 | |
| 490 | |
| 491 | Register LCodeGen::ToRegister(int index) const { |
| 492 | return Register::FromAllocationIndex(index); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | XMMRegister LCodeGen::ToDoubleRegister(int index) const { |
| 497 | return XMMRegister::FromAllocationIndex(index); |
| 498 | } |
| 499 | |
| 500 | |
| 501 | Register LCodeGen::ToRegister(LOperand* op) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 502 | DCHECK(op->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 503 | return ToRegister(op->index()); |
| 504 | } |
| 505 | |
| 506 | |
| 507 | XMMRegister LCodeGen::ToDoubleRegister(LOperand* op) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 508 | DCHECK(op->IsDoubleRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 509 | return ToDoubleRegister(op->index()); |
| 510 | } |
| 511 | |
| 512 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 513 | int32_t LCodeGen::ToInteger32(LConstantOperand* op) const { |
| 514 | return ToRepresentation(op, Representation::Integer32()); |
| 515 | } |
| 516 | |
| 517 | |
| 518 | int32_t LCodeGen::ToRepresentation(LConstantOperand* op, |
| 519 | const Representation& r) const { |
| 520 | HConstant* constant = chunk_->LookupConstant(op); |
| 521 | int32_t value = constant->Integer32Value(); |
| 522 | if (r.IsInteger32()) return value; |
| 523 | DCHECK(r.IsSmiOrTagged()); |
| 524 | return reinterpret_cast<int32_t>(Smi::FromInt(value)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 528 | Handle<Object> LCodeGen::ToHandle(LConstantOperand* op) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 529 | HConstant* constant = chunk_->LookupConstant(op); |
| 530 | DCHECK(chunk_->LookupLiteralRepresentation(op).IsSmiOrTagged()); |
| 531 | return constant->handle(isolate()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | |
| 535 | double LCodeGen::ToDouble(LConstantOperand* op) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 536 | HConstant* constant = chunk_->LookupConstant(op); |
| 537 | DCHECK(constant->HasDoubleValue()); |
| 538 | return constant->DoubleValue(); |
| 539 | } |
| 540 | |
| 541 | |
| 542 | ExternalReference LCodeGen::ToExternalReference(LConstantOperand* op) const { |
| 543 | HConstant* constant = chunk_->LookupConstant(op); |
| 544 | DCHECK(constant->HasExternalReferenceValue()); |
| 545 | return constant->ExternalReferenceValue(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | |
| 549 | bool LCodeGen::IsInteger32(LConstantOperand* op) const { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 550 | return chunk_->LookupLiteralRepresentation(op).IsSmiOrInteger32(); |
| 551 | } |
| 552 | |
| 553 | |
| 554 | bool LCodeGen::IsSmi(LConstantOperand* op) const { |
| 555 | return chunk_->LookupLiteralRepresentation(op).IsSmi(); |
| 556 | } |
| 557 | |
| 558 | |
| 559 | static int ArgumentsOffsetWithoutFrame(int index) { |
| 560 | DCHECK(index < 0); |
| 561 | return -(index + 1) * kPointerSize + kPCOnStackSize; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | |
| 565 | Operand LCodeGen::ToOperand(LOperand* op) const { |
| 566 | if (op->IsRegister()) return Operand(ToRegister(op)); |
| 567 | if (op->IsDoubleRegister()) return Operand(ToDoubleRegister(op)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 568 | DCHECK(op->IsStackSlot() || op->IsDoubleStackSlot()); |
| 569 | if (NeedsEagerFrame()) { |
| 570 | return Operand(ebp, StackSlotOffset(op->index())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 571 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 572 | // Retrieve parameter without eager stack-frame relative to the |
| 573 | // stack-pointer. |
| 574 | return Operand(esp, ArgumentsOffsetWithoutFrame(op->index())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 575 | } |
| 576 | } |
| 577 | |
| 578 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 579 | Operand LCodeGen::HighOperand(LOperand* op) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 580 | DCHECK(op->IsDoubleStackSlot()); |
| 581 | if (NeedsEagerFrame()) { |
| 582 | return Operand(ebp, StackSlotOffset(op->index()) + kPointerSize); |
| 583 | } else { |
| 584 | // Retrieve parameter without eager stack-frame relative to the |
| 585 | // stack-pointer. |
| 586 | return Operand( |
| 587 | esp, ArgumentsOffsetWithoutFrame(op->index()) + kPointerSize); |
| 588 | } |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | |
| 592 | void LCodeGen::WriteTranslation(LEnvironment* environment, |
| 593 | Translation* translation) { |
| 594 | if (environment == NULL) return; |
| 595 | |
| 596 | // The translation includes one command per value in the environment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 597 | int translation_size = environment->translation_size(); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 598 | // The output frame height does not include the parameters. |
| 599 | int height = translation_size - environment->parameter_count(); |
| 600 | |
| 601 | WriteTranslation(environment->outer(), translation); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 602 | bool has_closure_id = !info()->closure().is_null() && |
| 603 | !info()->closure().is_identical_to(environment->closure()); |
| 604 | int closure_id = has_closure_id |
| 605 | ? DefineDeoptimizationLiteral(environment->closure()) |
| 606 | : Translation::kSelfLiteralId; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 607 | switch (environment->frame_type()) { |
| 608 | case JS_FUNCTION: |
| 609 | translation->BeginJSFrame(environment->ast_id(), closure_id, height); |
| 610 | break; |
| 611 | case JS_CONSTRUCT: |
| 612 | translation->BeginConstructStubFrame(closure_id, translation_size); |
| 613 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 614 | case JS_GETTER: |
| 615 | DCHECK(translation_size == 1); |
| 616 | DCHECK(height == 0); |
| 617 | translation->BeginGetterStubFrame(closure_id); |
| 618 | break; |
| 619 | case JS_SETTER: |
| 620 | DCHECK(translation_size == 2); |
| 621 | DCHECK(height == 0); |
| 622 | translation->BeginSetterStubFrame(closure_id); |
| 623 | break; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 624 | case ARGUMENTS_ADAPTOR: |
| 625 | translation->BeginArgumentsAdaptorFrame(closure_id, translation_size); |
| 626 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | case STUB: |
| 628 | translation->BeginCompiledStubFrame(); |
| 629 | break; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 630 | default: |
| 631 | UNREACHABLE(); |
| 632 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 633 | |
| 634 | int object_index = 0; |
| 635 | int dematerialized_index = 0; |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 636 | for (int i = 0; i < translation_size; ++i) { |
| 637 | LOperand* value = environment->values()->at(i); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 638 | AddToTranslation(environment, |
| 639 | translation, |
| 640 | value, |
| 641 | environment->HasTaggedValueAt(i), |
| 642 | environment->HasUint32ValueAt(i), |
| 643 | &object_index, |
| 644 | &dematerialized_index); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 645 | } |
| 646 | } |
| 647 | |
| 648 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 649 | void LCodeGen::AddToTranslation(LEnvironment* environment, |
| 650 | Translation* translation, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 651 | LOperand* op, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 652 | bool is_tagged, |
| 653 | bool is_uint32, |
| 654 | int* object_index_pointer, |
| 655 | int* dematerialized_index_pointer) { |
| 656 | if (op == LEnvironment::materialization_marker()) { |
| 657 | int object_index = (*object_index_pointer)++; |
| 658 | if (environment->ObjectIsDuplicateAt(object_index)) { |
| 659 | int dupe_of = environment->ObjectDuplicateOfAt(object_index); |
| 660 | translation->DuplicateObject(dupe_of); |
| 661 | return; |
| 662 | } |
| 663 | int object_length = environment->ObjectLengthAt(object_index); |
| 664 | if (environment->ObjectIsArgumentsAt(object_index)) { |
| 665 | translation->BeginArgumentsObject(object_length); |
| 666 | } else { |
| 667 | translation->BeginCapturedObject(object_length); |
| 668 | } |
| 669 | int dematerialized_index = *dematerialized_index_pointer; |
| 670 | int env_offset = environment->translation_size() + dematerialized_index; |
| 671 | *dematerialized_index_pointer += object_length; |
| 672 | for (int i = 0; i < object_length; ++i) { |
| 673 | LOperand* value = environment->values()->at(env_offset + i); |
| 674 | AddToTranslation(environment, |
| 675 | translation, |
| 676 | value, |
| 677 | environment->HasTaggedValueAt(env_offset + i), |
| 678 | environment->HasUint32ValueAt(env_offset + i), |
| 679 | object_index_pointer, |
| 680 | dematerialized_index_pointer); |
| 681 | } |
| 682 | return; |
| 683 | } |
| 684 | |
| 685 | if (op->IsStackSlot()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 686 | if (is_tagged) { |
| 687 | translation->StoreStackSlot(op->index()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 688 | } else if (is_uint32) { |
| 689 | translation->StoreUint32StackSlot(op->index()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 690 | } else { |
| 691 | translation->StoreInt32StackSlot(op->index()); |
| 692 | } |
| 693 | } else if (op->IsDoubleStackSlot()) { |
| 694 | translation->StoreDoubleStackSlot(op->index()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 695 | } else if (op->IsRegister()) { |
| 696 | Register reg = ToRegister(op); |
| 697 | if (is_tagged) { |
| 698 | translation->StoreRegister(reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | } else if (is_uint32) { |
| 700 | translation->StoreUint32Register(reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 701 | } else { |
| 702 | translation->StoreInt32Register(reg); |
| 703 | } |
| 704 | } else if (op->IsDoubleRegister()) { |
| 705 | XMMRegister reg = ToDoubleRegister(op); |
| 706 | translation->StoreDoubleRegister(reg); |
| 707 | } else if (op->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 708 | HConstant* constant = chunk()->LookupConstant(LConstantOperand::cast(op)); |
| 709 | int src_index = DefineDeoptimizationLiteral(constant->handle(isolate())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 710 | translation->StoreLiteral(src_index); |
| 711 | } else { |
| 712 | UNREACHABLE(); |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 717 | void LCodeGen::CallCodeGeneric(Handle<Code> code, |
| 718 | RelocInfo::Mode mode, |
| 719 | LInstruction* instr, |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 720 | SafepointMode safepoint_mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 721 | DCHECK(instr != NULL); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 722 | __ call(code, mode); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 723 | RecordSafepointWithLazyDeopt(instr, safepoint_mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 724 | |
| 725 | // Signal that we don't inline smi code before these stubs in the |
| 726 | // optimizing code generator. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 727 | if (code->kind() == Code::BINARY_OP_IC || |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 728 | code->kind() == Code::COMPARE_IC) { |
| 729 | __ nop(); |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 734 | void LCodeGen::CallCode(Handle<Code> code, |
| 735 | RelocInfo::Mode mode, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 736 | LInstruction* instr) { |
| 737 | CallCodeGeneric(code, mode, instr, RECORD_SIMPLE_SAFEPOINT); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 738 | } |
| 739 | |
| 740 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 741 | void LCodeGen::CallRuntime(const Runtime::Function* fun, |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 742 | int argc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 743 | LInstruction* instr, |
| 744 | SaveFPRegsMode save_doubles) { |
| 745 | DCHECK(instr != NULL); |
| 746 | DCHECK(instr->HasPointerMap()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 747 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 748 | __ CallRuntime(fun, argc, save_doubles); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 749 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 750 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 751 | |
| 752 | DCHECK(info()->is_calling()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 756 | void LCodeGen::LoadContextFromDeferred(LOperand* context) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 757 | if (context->IsRegister()) { |
| 758 | if (!ToRegister(context).is(esi)) { |
| 759 | __ mov(esi, ToRegister(context)); |
| 760 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 761 | } else if (context->IsStackSlot()) { |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 762 | __ mov(esi, ToOperand(context)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 763 | } else if (context->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 764 | HConstant* constant = |
| 765 | chunk_->LookupConstant(LConstantOperand::cast(context)); |
| 766 | __ LoadObject(esi, Handle<Object>::cast(constant->handle(isolate()))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 767 | } else { |
| 768 | UNREACHABLE(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 769 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id, |
| 773 | int argc, |
| 774 | LInstruction* instr, |
| 775 | LOperand* context) { |
| 776 | LoadContextFromDeferred(context); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 777 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 778 | __ CallRuntimeSaveDoubles(id); |
| 779 | RecordSafepointWithRegisters( |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 780 | instr->pointer_map(), argc, Safepoint::kNoLazyDeopt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 781 | |
| 782 | DCHECK(info()->is_calling()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 786 | void LCodeGen::RegisterEnvironmentForDeoptimization( |
| 787 | LEnvironment* environment, Safepoint::DeoptMode mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 788 | environment->set_has_been_used(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 789 | if (!environment->HasBeenRegistered()) { |
| 790 | // Physical stack frame layout: |
| 791 | // -x ............. -4 0 ..................................... y |
| 792 | // [incoming arguments] [spill slots] [pushed outgoing arguments] |
| 793 | |
| 794 | // Layout of the environment: |
| 795 | // 0 ..................................................... size-1 |
| 796 | // [parameters] [locals] [expression stack including arguments] |
| 797 | |
| 798 | // Layout of the translation: |
| 799 | // 0 ........................................................ size - 1 + 4 |
| 800 | // [expression stack including arguments] [locals] [4 words] [parameters] |
| 801 | // |>------------ translation_size ------------<| |
| 802 | |
| 803 | int frame_count = 0; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 804 | int jsframe_count = 0; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 805 | for (LEnvironment* e = environment; e != NULL; e = e->outer()) { |
| 806 | ++frame_count; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 807 | if (e->frame_type() == JS_FUNCTION) { |
| 808 | ++jsframe_count; |
| 809 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 810 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 811 | Translation translation(&translations_, frame_count, jsframe_count, zone()); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 812 | WriteTranslation(environment, &translation); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 813 | int deoptimization_index = deoptimizations_.length(); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 814 | int pc_offset = masm()->pc_offset(); |
| 815 | environment->Register(deoptimization_index, |
| 816 | translation.index(), |
| 817 | (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 818 | deoptimizations_.Add(environment, zone()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 819 | } |
| 820 | } |
| 821 | |
| 822 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 823 | void LCodeGen::DeoptimizeIf(Condition cc, LInstruction* instr, |
| 824 | const char* detail, |
| 825 | Deoptimizer::BailoutType bailout_type) { |
| 826 | LEnvironment* environment = instr->environment(); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 827 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 828 | DCHECK(environment->HasBeenRegistered()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 829 | int id = environment->deoptimization_index(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 830 | DCHECK(info()->IsOptimizing() || info()->IsStub()); |
| 831 | Address entry = |
| 832 | Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 833 | if (entry == NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 834 | Abort(kBailoutWasNotPrepared); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 835 | return; |
| 836 | } |
| 837 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 838 | if (DeoptEveryNTimes()) { |
| 839 | ExternalReference count = ExternalReference::stress_deopt_count(isolate()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 840 | Label no_deopt; |
| 841 | __ pushfd(); |
| 842 | __ push(eax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 843 | __ mov(eax, Operand::StaticVariable(count)); |
| 844 | __ sub(eax, Immediate(1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 845 | __ j(not_zero, &no_deopt, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 846 | if (FLAG_trap_on_deopt) __ int3(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 847 | __ mov(eax, Immediate(FLAG_deopt_every_n_times)); |
| 848 | __ mov(Operand::StaticVariable(count), eax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 849 | __ pop(eax); |
| 850 | __ popfd(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 851 | DCHECK(frame_is_built_); |
| 852 | __ call(entry, RelocInfo::RUNTIME_ENTRY); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 853 | __ bind(&no_deopt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 854 | __ mov(Operand::StaticVariable(count), eax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 855 | __ pop(eax); |
| 856 | __ popfd(); |
| 857 | } |
| 858 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 859 | if (info()->ShouldTrapOnDeopt()) { |
| 860 | Label done; |
| 861 | if (cc != no_condition) __ j(NegateCondition(cc), &done, Label::kNear); |
| 862 | __ int3(); |
| 863 | __ bind(&done); |
| 864 | } |
| 865 | |
| 866 | Deoptimizer::Reason reason(instr->hydrogen_value()->position().raw(), |
| 867 | instr->Mnemonic(), detail); |
| 868 | DCHECK(info()->IsStub() || frame_is_built_); |
| 869 | if (cc == no_condition && frame_is_built_) { |
| 870 | DeoptComment(reason); |
| 871 | __ call(entry, RelocInfo::RUNTIME_ENTRY); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 872 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 873 | Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type, |
| 874 | !frame_is_built_); |
| 875 | // We often have several deopts to the same entry, reuse the last |
| 876 | // jump entry if this is the case. |
| 877 | if (jump_table_.is_empty() || |
| 878 | !table_entry.IsEquivalentTo(jump_table_.last())) { |
| 879 | jump_table_.Add(table_entry, zone()); |
| 880 | } |
| 881 | if (cc == no_condition) { |
| 882 | __ jmp(&jump_table_.last().label); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 883 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 884 | __ j(cc, &jump_table_.last().label); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 885 | } |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 890 | void LCodeGen::DeoptimizeIf(Condition cc, LInstruction* instr, |
| 891 | const char* detail) { |
| 892 | Deoptimizer::BailoutType bailout_type = info()->IsStub() |
| 893 | ? Deoptimizer::LAZY |
| 894 | : Deoptimizer::EAGER; |
| 895 | DeoptimizeIf(cc, instr, detail, bailout_type); |
| 896 | } |
| 897 | |
| 898 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 899 | void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) { |
| 900 | int length = deoptimizations_.length(); |
| 901 | if (length == 0) return; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 902 | Handle<DeoptimizationInputData> data = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 903 | DeoptimizationInputData::New(isolate(), length, TENURED); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 904 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 905 | Handle<ByteArray> translations = |
| 906 | translations_.CreateByteArray(isolate()->factory()); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 907 | data->SetTranslationByteArray(*translations); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 908 | data->SetInlinedFunctionCount(Smi::FromInt(inlined_function_count_)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 909 | data->SetOptimizationId(Smi::FromInt(info_->optimization_id())); |
| 910 | if (info_->IsOptimizing()) { |
| 911 | // Reference to shared function info does not change between phases. |
| 912 | AllowDeferredHandleDereference allow_handle_dereference; |
| 913 | data->SetSharedFunctionInfo(*info_->shared_info()); |
| 914 | } else { |
| 915 | data->SetSharedFunctionInfo(Smi::FromInt(0)); |
| 916 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 917 | |
| 918 | Handle<FixedArray> literals = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 919 | factory()->NewFixedArray(deoptimization_literals_.length(), TENURED); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 920 | { AllowDeferredHandleDereference copy_handles; |
| 921 | for (int i = 0; i < deoptimization_literals_.length(); i++) { |
| 922 | literals->set(i, *deoptimization_literals_[i]); |
| 923 | } |
| 924 | data->SetLiteralArray(*literals); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 925 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 926 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 927 | data->SetOsrAstId(Smi::FromInt(info_->osr_ast_id().ToInt())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 928 | data->SetOsrPcOffset(Smi::FromInt(osr_pc_offset_)); |
| 929 | |
| 930 | // Populate the deoptimization entries. |
| 931 | for (int i = 0; i < length; i++) { |
| 932 | LEnvironment* env = deoptimizations_[i]; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 933 | data->SetAstId(i, env->ast_id()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 934 | data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
| 935 | data->SetArgumentsStackHeight(i, |
| 936 | Smi::FromInt(env->arguments_stack_height())); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 937 | data->SetPc(i, Smi::FromInt(env->pc_offset())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 938 | } |
| 939 | code->set_deoptimization_data(*data); |
| 940 | } |
| 941 | |
| 942 | |
| 943 | int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { |
| 944 | int result = deoptimization_literals_.length(); |
| 945 | for (int i = 0; i < deoptimization_literals_.length(); ++i) { |
| 946 | if (deoptimization_literals_[i].is_identical_to(literal)) return i; |
| 947 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 948 | deoptimization_literals_.Add(literal, zone()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 949 | return result; |
| 950 | } |
| 951 | |
| 952 | |
| 953 | void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 954 | DCHECK(deoptimization_literals_.length() == 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 955 | |
| 956 | const ZoneList<Handle<JSFunction> >* inlined_closures = |
| 957 | chunk()->inlined_closures(); |
| 958 | |
| 959 | for (int i = 0, length = inlined_closures->length(); |
| 960 | i < length; |
| 961 | i++) { |
| 962 | DefineDeoptimizationLiteral(inlined_closures->at(i)); |
| 963 | } |
| 964 | |
| 965 | inlined_function_count_ = deoptimization_literals_.length(); |
| 966 | } |
| 967 | |
| 968 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 969 | void LCodeGen::RecordSafepointWithLazyDeopt( |
| 970 | LInstruction* instr, SafepointMode safepoint_mode) { |
| 971 | if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) { |
| 972 | RecordSafepoint(instr->pointer_map(), Safepoint::kLazyDeopt); |
| 973 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 974 | DCHECK(safepoint_mode == RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 975 | RecordSafepointWithRegisters( |
| 976 | instr->pointer_map(), 0, Safepoint::kLazyDeopt); |
| 977 | } |
| 978 | } |
| 979 | |
| 980 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 981 | void LCodeGen::RecordSafepoint( |
| 982 | LPointerMap* pointers, |
| 983 | Safepoint::Kind kind, |
| 984 | int arguments, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 985 | Safepoint::DeoptMode deopt_mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 986 | DCHECK(kind == expected_safepoint_kind_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 987 | const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 988 | Safepoint safepoint = |
| 989 | safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 990 | for (int i = 0; i < operands->length(); i++) { |
| 991 | LOperand* pointer = operands->at(i); |
| 992 | if (pointer->IsStackSlot()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 993 | safepoint.DefinePointerSlot(pointer->index(), zone()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 994 | } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 995 | safepoint.DefinePointerRegister(ToRegister(pointer), zone()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 996 | } |
| 997 | } |
| 998 | } |
| 999 | |
| 1000 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1001 | void LCodeGen::RecordSafepoint(LPointerMap* pointers, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 1002 | Safepoint::DeoptMode mode) { |
| 1003 | RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1004 | } |
| 1005 | |
| 1006 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 1007 | void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1008 | LPointerMap empty_pointers(zone()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 1009 | RecordSafepoint(&empty_pointers, mode); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1010 | } |
| 1011 | |
| 1012 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1013 | void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, |
| 1014 | int arguments, |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 1015 | Safepoint::DeoptMode mode) { |
| 1016 | RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1020 | void LCodeGen::RecordAndWritePosition(int position) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1021 | if (position == RelocInfo::kNoPosition) return; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1022 | masm()->positions_recorder()->RecordPosition(position); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1023 | masm()->positions_recorder()->WriteRecordedPositions(); |
| 1024 | } |
| 1025 | |
| 1026 | |
| 1027 | static const char* LabelType(LLabel* label) { |
| 1028 | if (label->is_loop_header()) return " (loop header)"; |
| 1029 | if (label->is_osr_entry()) return " (OSR entry)"; |
| 1030 | return ""; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | |
| 1034 | void LCodeGen::DoLabel(LLabel* label) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1035 | Comment(";;; <@%d,#%d> -------------------- B%d%s --------------------", |
| 1036 | current_instruction_, |
| 1037 | label->hydrogen_value()->id(), |
| 1038 | label->block_id(), |
| 1039 | LabelType(label)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1040 | __ bind(label->label()); |
| 1041 | current_block_ = label->block_id(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1042 | DoGap(label); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1043 | } |
| 1044 | |
| 1045 | |
| 1046 | void LCodeGen::DoParallelMove(LParallelMove* move) { |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 1047 | resolver_.Resolve(move); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1048 | } |
| 1049 | |
| 1050 | |
| 1051 | void LCodeGen::DoGap(LGap* gap) { |
| 1052 | for (int i = LGap::FIRST_INNER_POSITION; |
| 1053 | i <= LGap::LAST_INNER_POSITION; |
| 1054 | i++) { |
| 1055 | LGap::InnerPosition inner_pos = static_cast<LGap::InnerPosition>(i); |
| 1056 | LParallelMove* move = gap->GetParallelMove(inner_pos); |
| 1057 | if (move != NULL) DoParallelMove(move); |
| 1058 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1059 | } |
| 1060 | |
| 1061 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1062 | void LCodeGen::DoInstructionGap(LInstructionGap* instr) { |
| 1063 | DoGap(instr); |
| 1064 | } |
| 1065 | |
| 1066 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1067 | void LCodeGen::DoParameter(LParameter* instr) { |
| 1068 | // Nothing to do. |
| 1069 | } |
| 1070 | |
| 1071 | |
| 1072 | void LCodeGen::DoCallStub(LCallStub* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1073 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 1074 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1075 | switch (instr->hydrogen()->major_key()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1076 | case CodeStub::RegExpExec: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1077 | RegExpExecStub stub(isolate()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1078 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1079 | break; |
| 1080 | } |
| 1081 | case CodeStub::SubString: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1082 | SubStringStub stub(isolate()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1083 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1084 | break; |
| 1085 | } |
| 1086 | case CodeStub::StringCompare: { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1087 | StringCompareStub stub(isolate()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1088 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1089 | break; |
| 1090 | } |
| 1091 | default: |
| 1092 | UNREACHABLE(); |
| 1093 | } |
| 1094 | } |
| 1095 | |
| 1096 | |
| 1097 | void LCodeGen::DoUnknownOSRValue(LUnknownOSRValue* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1098 | GenerateOsrPrologue(); |
| 1099 | } |
| 1100 | |
| 1101 | |
| 1102 | void LCodeGen::DoModByPowerOf2I(LModByPowerOf2I* instr) { |
| 1103 | Register dividend = ToRegister(instr->dividend()); |
| 1104 | int32_t divisor = instr->divisor(); |
| 1105 | DCHECK(dividend.is(ToRegister(instr->result()))); |
| 1106 | |
| 1107 | // Theoretically, a variation of the branch-free code for integer division by |
| 1108 | // a power of 2 (calculating the remainder via an additional multiplication |
| 1109 | // (which gets simplified to an 'and') and subtraction) should be faster, and |
| 1110 | // this is exactly what GCC and clang emit. Nevertheless, benchmarks seem to |
| 1111 | // indicate that positive dividends are heavily favored, so the branching |
| 1112 | // version performs better. |
| 1113 | HMod* hmod = instr->hydrogen(); |
| 1114 | int32_t mask = divisor < 0 ? -(divisor + 1) : (divisor - 1); |
| 1115 | Label dividend_is_not_negative, done; |
| 1116 | if (hmod->CheckFlag(HValue::kLeftCanBeNegative)) { |
| 1117 | __ test(dividend, dividend); |
| 1118 | __ j(not_sign, ÷nd_is_not_negative, Label::kNear); |
| 1119 | // Note that this is correct even for kMinInt operands. |
| 1120 | __ neg(dividend); |
| 1121 | __ and_(dividend, mask); |
| 1122 | __ neg(dividend); |
| 1123 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1124 | DeoptimizeIf(zero, instr, "minus zero"); |
| 1125 | } |
| 1126 | __ jmp(&done, Label::kNear); |
| 1127 | } |
| 1128 | |
| 1129 | __ bind(÷nd_is_not_negative); |
| 1130 | __ and_(dividend, mask); |
| 1131 | __ bind(&done); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | void LCodeGen::DoModByConstI(LModByConstI* instr) { |
| 1136 | Register dividend = ToRegister(instr->dividend()); |
| 1137 | int32_t divisor = instr->divisor(); |
| 1138 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 1139 | |
| 1140 | if (divisor == 0) { |
| 1141 | DeoptimizeIf(no_condition, instr, "division by zero"); |
| 1142 | return; |
| 1143 | } |
| 1144 | |
| 1145 | __ TruncatingDiv(dividend, Abs(divisor)); |
| 1146 | __ imul(edx, edx, Abs(divisor)); |
| 1147 | __ mov(eax, dividend); |
| 1148 | __ sub(eax, edx); |
| 1149 | |
| 1150 | // Check for negative zero. |
| 1151 | HMod* hmod = instr->hydrogen(); |
| 1152 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1153 | Label remainder_not_zero; |
| 1154 | __ j(not_zero, &remainder_not_zero, Label::kNear); |
| 1155 | __ cmp(dividend, Immediate(0)); |
| 1156 | DeoptimizeIf(less, instr, "minus zero"); |
| 1157 | __ bind(&remainder_not_zero); |
| 1158 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | void LCodeGen::DoModI(LModI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1163 | HMod* hmod = instr->hydrogen(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1164 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1165 | Register left_reg = ToRegister(instr->left()); |
| 1166 | DCHECK(left_reg.is(eax)); |
| 1167 | Register right_reg = ToRegister(instr->right()); |
| 1168 | DCHECK(!right_reg.is(eax)); |
| 1169 | DCHECK(!right_reg.is(edx)); |
| 1170 | Register result_reg = ToRegister(instr->result()); |
| 1171 | DCHECK(result_reg.is(edx)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1172 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1173 | Label done; |
| 1174 | // Check for x % 0, idiv would signal a divide error. We have to |
| 1175 | // deopt in this case because we can't return a NaN. |
| 1176 | if (hmod->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1177 | __ test(right_reg, Operand(right_reg)); |
| 1178 | DeoptimizeIf(zero, instr, "division by zero"); |
| 1179 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1180 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1181 | // Check for kMinInt % -1, idiv would signal a divide error. We |
| 1182 | // have to deopt if we care about -0, because we can't return that. |
| 1183 | if (hmod->CheckFlag(HValue::kCanOverflow)) { |
| 1184 | Label no_overflow_possible; |
| 1185 | __ cmp(left_reg, kMinInt); |
| 1186 | __ j(not_equal, &no_overflow_possible, Label::kNear); |
| 1187 | __ cmp(right_reg, -1); |
| 1188 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1189 | DeoptimizeIf(equal, instr, "minus zero"); |
Ben Murdoch | 7d3e7fc | 2011-07-12 16:37:06 +0100 | [diff] [blame] | 1190 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1191 | __ j(not_equal, &no_overflow_possible, Label::kNear); |
| 1192 | __ Move(result_reg, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1193 | __ jmp(&done, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1194 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1195 | __ bind(&no_overflow_possible); |
| 1196 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1197 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1198 | // Sign extend dividend in eax into edx:eax. |
| 1199 | __ cdq(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1200 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1201 | // If we care about -0, test if the dividend is <0 and the result is 0. |
| 1202 | if (hmod->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1203 | Label positive_left; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1204 | __ test(left_reg, Operand(left_reg)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1205 | __ j(not_sign, &positive_left, Label::kNear); |
| 1206 | __ idiv(right_reg); |
| 1207 | __ test(result_reg, Operand(result_reg)); |
| 1208 | DeoptimizeIf(zero, instr, "minus zero"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1209 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1210 | __ bind(&positive_left); |
| 1211 | } |
| 1212 | __ idiv(right_reg); |
| 1213 | __ bind(&done); |
| 1214 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1215 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1216 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1217 | void LCodeGen::DoDivByPowerOf2I(LDivByPowerOf2I* instr) { |
| 1218 | Register dividend = ToRegister(instr->dividend()); |
| 1219 | int32_t divisor = instr->divisor(); |
| 1220 | Register result = ToRegister(instr->result()); |
| 1221 | DCHECK(divisor == kMinInt || base::bits::IsPowerOfTwo32(Abs(divisor))); |
| 1222 | DCHECK(!result.is(dividend)); |
| 1223 | |
| 1224 | // Check for (0 / -x) that will produce negative zero. |
| 1225 | HDiv* hdiv = instr->hydrogen(); |
| 1226 | if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) { |
| 1227 | __ test(dividend, dividend); |
| 1228 | DeoptimizeIf(zero, instr, "minus zero"); |
| 1229 | } |
| 1230 | // Check for (kMinInt / -1). |
| 1231 | if (hdiv->CheckFlag(HValue::kCanOverflow) && divisor == -1) { |
| 1232 | __ cmp(dividend, kMinInt); |
| 1233 | DeoptimizeIf(zero, instr, "overflow"); |
| 1234 | } |
| 1235 | // Deoptimize if remainder will not be 0. |
| 1236 | if (!hdiv->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) && |
| 1237 | divisor != 1 && divisor != -1) { |
| 1238 | int32_t mask = divisor < 0 ? -(divisor + 1) : (divisor - 1); |
| 1239 | __ test(dividend, Immediate(mask)); |
| 1240 | DeoptimizeIf(not_zero, instr, "lost precision"); |
| 1241 | } |
| 1242 | __ Move(result, dividend); |
| 1243 | int32_t shift = WhichPowerOf2Abs(divisor); |
| 1244 | if (shift > 0) { |
| 1245 | // The arithmetic shift is always OK, the 'if' is an optimization only. |
| 1246 | if (shift > 1) __ sar(result, 31); |
| 1247 | __ shr(result, 32 - shift); |
| 1248 | __ add(result, dividend); |
| 1249 | __ sar(result, shift); |
| 1250 | } |
| 1251 | if (divisor < 0) __ neg(result); |
| 1252 | } |
| 1253 | |
| 1254 | |
| 1255 | void LCodeGen::DoDivByConstI(LDivByConstI* instr) { |
| 1256 | Register dividend = ToRegister(instr->dividend()); |
| 1257 | int32_t divisor = instr->divisor(); |
| 1258 | DCHECK(ToRegister(instr->result()).is(edx)); |
| 1259 | |
| 1260 | if (divisor == 0) { |
| 1261 | DeoptimizeIf(no_condition, instr, "division by zero"); |
| 1262 | return; |
| 1263 | } |
| 1264 | |
| 1265 | // Check for (0 / -x) that will produce negative zero. |
| 1266 | HDiv* hdiv = instr->hydrogen(); |
| 1267 | if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) { |
| 1268 | __ test(dividend, dividend); |
| 1269 | DeoptimizeIf(zero, instr, "minus zero"); |
| 1270 | } |
| 1271 | |
| 1272 | __ TruncatingDiv(dividend, Abs(divisor)); |
| 1273 | if (divisor < 0) __ neg(edx); |
| 1274 | |
| 1275 | if (!hdiv->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| 1276 | __ mov(eax, edx); |
| 1277 | __ imul(eax, eax, divisor); |
| 1278 | __ sub(eax, dividend); |
| 1279 | DeoptimizeIf(not_equal, instr, "lost precision"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1280 | } |
| 1281 | } |
| 1282 | |
| 1283 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1284 | // TODO(svenpanne) Refactor this to avoid code duplication with DoFlooringDivI. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1285 | void LCodeGen::DoDivI(LDivI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1286 | HBinaryOperation* hdiv = instr->hydrogen(); |
| 1287 | Register dividend = ToRegister(instr->dividend()); |
| 1288 | Register divisor = ToRegister(instr->divisor()); |
| 1289 | Register remainder = ToRegister(instr->temp()); |
| 1290 | DCHECK(dividend.is(eax)); |
| 1291 | DCHECK(remainder.is(edx)); |
| 1292 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 1293 | DCHECK(!divisor.is(eax)); |
| 1294 | DCHECK(!divisor.is(edx)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1295 | |
| 1296 | // Check for x / 0. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1297 | if (hdiv->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1298 | __ test(divisor, divisor); |
| 1299 | DeoptimizeIf(zero, instr, "division by zero"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1300 | } |
| 1301 | |
| 1302 | // Check for (0 / -x) that will produce negative zero. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1303 | if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1304 | Label dividend_not_zero; |
| 1305 | __ test(dividend, dividend); |
| 1306 | __ j(not_zero, ÷nd_not_zero, Label::kNear); |
| 1307 | __ test(divisor, divisor); |
| 1308 | DeoptimizeIf(sign, instr, "minus zero"); |
| 1309 | __ bind(÷nd_not_zero); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1310 | } |
| 1311 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1312 | // Check for (kMinInt / -1). |
| 1313 | if (hdiv->CheckFlag(HValue::kCanOverflow)) { |
| 1314 | Label dividend_not_min_int; |
| 1315 | __ cmp(dividend, kMinInt); |
| 1316 | __ j(not_zero, ÷nd_not_min_int, Label::kNear); |
| 1317 | __ cmp(divisor, -1); |
| 1318 | DeoptimizeIf(zero, instr, "overflow"); |
| 1319 | __ bind(÷nd_not_min_int); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1320 | } |
| 1321 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1322 | // Sign extend to edx (= remainder). |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1323 | __ cdq(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1324 | __ idiv(divisor); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1325 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1326 | if (!hdiv->CheckFlag(HValue::kAllUsesTruncatingToInt32)) { |
| 1327 | // Deoptimize if remainder is not 0. |
| 1328 | __ test(remainder, remainder); |
| 1329 | DeoptimizeIf(not_zero, instr, "lost precision"); |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | |
| 1334 | void LCodeGen::DoFlooringDivByPowerOf2I(LFlooringDivByPowerOf2I* instr) { |
| 1335 | Register dividend = ToRegister(instr->dividend()); |
| 1336 | int32_t divisor = instr->divisor(); |
| 1337 | DCHECK(dividend.is(ToRegister(instr->result()))); |
| 1338 | |
| 1339 | // If the divisor is positive, things are easy: There can be no deopts and we |
| 1340 | // can simply do an arithmetic right shift. |
| 1341 | if (divisor == 1) return; |
| 1342 | int32_t shift = WhichPowerOf2Abs(divisor); |
| 1343 | if (divisor > 1) { |
| 1344 | __ sar(dividend, shift); |
| 1345 | return; |
| 1346 | } |
| 1347 | |
| 1348 | // If the divisor is negative, we have to negate and handle edge cases. |
| 1349 | __ neg(dividend); |
| 1350 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1351 | DeoptimizeIf(zero, instr, "minus zero"); |
| 1352 | } |
| 1353 | |
| 1354 | // Dividing by -1 is basically negation, unless we overflow. |
| 1355 | if (divisor == -1) { |
| 1356 | if (instr->hydrogen()->CheckFlag(HValue::kLeftCanBeMinInt)) { |
| 1357 | DeoptimizeIf(overflow, instr, "overflow"); |
| 1358 | } |
| 1359 | return; |
| 1360 | } |
| 1361 | |
| 1362 | // If the negation could not overflow, simply shifting is OK. |
| 1363 | if (!instr->hydrogen()->CheckFlag(HValue::kLeftCanBeMinInt)) { |
| 1364 | __ sar(dividend, shift); |
| 1365 | return; |
| 1366 | } |
| 1367 | |
| 1368 | Label not_kmin_int, done; |
| 1369 | __ j(no_overflow, ¬_kmin_int, Label::kNear); |
| 1370 | __ mov(dividend, Immediate(kMinInt / divisor)); |
| 1371 | __ jmp(&done, Label::kNear); |
| 1372 | __ bind(¬_kmin_int); |
| 1373 | __ sar(dividend, shift); |
| 1374 | __ bind(&done); |
| 1375 | } |
| 1376 | |
| 1377 | |
| 1378 | void LCodeGen::DoFlooringDivByConstI(LFlooringDivByConstI* instr) { |
| 1379 | Register dividend = ToRegister(instr->dividend()); |
| 1380 | int32_t divisor = instr->divisor(); |
| 1381 | DCHECK(ToRegister(instr->result()).is(edx)); |
| 1382 | |
| 1383 | if (divisor == 0) { |
| 1384 | DeoptimizeIf(no_condition, instr, "division by zero"); |
| 1385 | return; |
| 1386 | } |
| 1387 | |
| 1388 | // Check for (0 / -x) that will produce negative zero. |
| 1389 | HMathFloorOfDiv* hdiv = instr->hydrogen(); |
| 1390 | if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) { |
| 1391 | __ test(dividend, dividend); |
| 1392 | DeoptimizeIf(zero, instr, "minus zero"); |
| 1393 | } |
| 1394 | |
| 1395 | // Easy case: We need no dynamic check for the dividend and the flooring |
| 1396 | // division is the same as the truncating division. |
| 1397 | if ((divisor > 0 && !hdiv->CheckFlag(HValue::kLeftCanBeNegative)) || |
| 1398 | (divisor < 0 && !hdiv->CheckFlag(HValue::kLeftCanBePositive))) { |
| 1399 | __ TruncatingDiv(dividend, Abs(divisor)); |
| 1400 | if (divisor < 0) __ neg(edx); |
| 1401 | return; |
| 1402 | } |
| 1403 | |
| 1404 | // In the general case we may need to adjust before and after the truncating |
| 1405 | // division to get a flooring division. |
| 1406 | Register temp = ToRegister(instr->temp3()); |
| 1407 | DCHECK(!temp.is(dividend) && !temp.is(eax) && !temp.is(edx)); |
| 1408 | Label needs_adjustment, done; |
| 1409 | __ cmp(dividend, Immediate(0)); |
| 1410 | __ j(divisor > 0 ? less : greater, &needs_adjustment, Label::kNear); |
| 1411 | __ TruncatingDiv(dividend, Abs(divisor)); |
| 1412 | if (divisor < 0) __ neg(edx); |
| 1413 | __ jmp(&done, Label::kNear); |
| 1414 | __ bind(&needs_adjustment); |
| 1415 | __ lea(temp, Operand(dividend, divisor > 0 ? 1 : -1)); |
| 1416 | __ TruncatingDiv(temp, Abs(divisor)); |
| 1417 | if (divisor < 0) __ neg(edx); |
| 1418 | __ dec(edx); |
| 1419 | __ bind(&done); |
| 1420 | } |
| 1421 | |
| 1422 | |
| 1423 | // TODO(svenpanne) Refactor this to avoid code duplication with DoDivI. |
| 1424 | void LCodeGen::DoFlooringDivI(LFlooringDivI* instr) { |
| 1425 | HBinaryOperation* hdiv = instr->hydrogen(); |
| 1426 | Register dividend = ToRegister(instr->dividend()); |
| 1427 | Register divisor = ToRegister(instr->divisor()); |
| 1428 | Register remainder = ToRegister(instr->temp()); |
| 1429 | Register result = ToRegister(instr->result()); |
| 1430 | DCHECK(dividend.is(eax)); |
| 1431 | DCHECK(remainder.is(edx)); |
| 1432 | DCHECK(result.is(eax)); |
| 1433 | DCHECK(!divisor.is(eax)); |
| 1434 | DCHECK(!divisor.is(edx)); |
| 1435 | |
| 1436 | // Check for x / 0. |
| 1437 | if (hdiv->CheckFlag(HValue::kCanBeDivByZero)) { |
| 1438 | __ test(divisor, divisor); |
| 1439 | DeoptimizeIf(zero, instr, "division by zero"); |
| 1440 | } |
| 1441 | |
| 1442 | // Check for (0 / -x) that will produce negative zero. |
| 1443 | if (hdiv->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1444 | Label dividend_not_zero; |
| 1445 | __ test(dividend, dividend); |
| 1446 | __ j(not_zero, ÷nd_not_zero, Label::kNear); |
| 1447 | __ test(divisor, divisor); |
| 1448 | DeoptimizeIf(sign, instr, "minus zero"); |
| 1449 | __ bind(÷nd_not_zero); |
| 1450 | } |
| 1451 | |
| 1452 | // Check for (kMinInt / -1). |
| 1453 | if (hdiv->CheckFlag(HValue::kCanOverflow)) { |
| 1454 | Label dividend_not_min_int; |
| 1455 | __ cmp(dividend, kMinInt); |
| 1456 | __ j(not_zero, ÷nd_not_min_int, Label::kNear); |
| 1457 | __ cmp(divisor, -1); |
| 1458 | DeoptimizeIf(zero, instr, "overflow"); |
| 1459 | __ bind(÷nd_not_min_int); |
| 1460 | } |
| 1461 | |
| 1462 | // Sign extend to edx (= remainder). |
| 1463 | __ cdq(); |
| 1464 | __ idiv(divisor); |
| 1465 | |
| 1466 | Label done; |
| 1467 | __ test(remainder, remainder); |
| 1468 | __ j(zero, &done, Label::kNear); |
| 1469 | __ xor_(remainder, divisor); |
| 1470 | __ sar(remainder, 31); |
| 1471 | __ add(result, remainder); |
| 1472 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | void LCodeGen::DoMulI(LMulI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1477 | Register left = ToRegister(instr->left()); |
| 1478 | LOperand* right = instr->right(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1479 | |
| 1480 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1481 | __ mov(ToRegister(instr->temp()), left); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1482 | } |
| 1483 | |
| 1484 | if (right->IsConstantOperand()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1485 | // Try strength reductions on the multiplication. |
| 1486 | // All replacement instructions are at most as long as the imul |
| 1487 | // and have better latency. |
| 1488 | int constant = ToInteger32(LConstantOperand::cast(right)); |
| 1489 | if (constant == -1) { |
| 1490 | __ neg(left); |
| 1491 | } else if (constant == 0) { |
| 1492 | __ xor_(left, Operand(left)); |
| 1493 | } else if (constant == 2) { |
| 1494 | __ add(left, Operand(left)); |
| 1495 | } else if (!instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1496 | // If we know that the multiplication can't overflow, it's safe to |
| 1497 | // use instructions that don't set the overflow flag for the |
| 1498 | // multiplication. |
| 1499 | switch (constant) { |
| 1500 | case 1: |
| 1501 | // Do nothing. |
| 1502 | break; |
| 1503 | case 3: |
| 1504 | __ lea(left, Operand(left, left, times_2, 0)); |
| 1505 | break; |
| 1506 | case 4: |
| 1507 | __ shl(left, 2); |
| 1508 | break; |
| 1509 | case 5: |
| 1510 | __ lea(left, Operand(left, left, times_4, 0)); |
| 1511 | break; |
| 1512 | case 8: |
| 1513 | __ shl(left, 3); |
| 1514 | break; |
| 1515 | case 9: |
| 1516 | __ lea(left, Operand(left, left, times_8, 0)); |
| 1517 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1518 | case 16: |
| 1519 | __ shl(left, 4); |
| 1520 | break; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1521 | default: |
| 1522 | __ imul(left, left, constant); |
| 1523 | break; |
| 1524 | } |
| 1525 | } else { |
| 1526 | __ imul(left, left, constant); |
| 1527 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1528 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1529 | if (instr->hydrogen()->representation().IsSmi()) { |
| 1530 | __ SmiUntag(left); |
| 1531 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1532 | __ imul(left, ToOperand(right)); |
| 1533 | } |
| 1534 | |
| 1535 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1536 | DeoptimizeIf(overflow, instr, "overflow"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1537 | } |
| 1538 | |
| 1539 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1540 | // Bail out if the result is supposed to be negative zero. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1541 | Label done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1542 | __ test(left, Operand(left)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1543 | __ j(not_zero, &done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1544 | if (right->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1545 | if (ToInteger32(LConstantOperand::cast(right)) < 0) { |
| 1546 | DeoptimizeIf(no_condition, instr, "minus zero"); |
| 1547 | } else if (ToInteger32(LConstantOperand::cast(right)) == 0) { |
| 1548 | __ cmp(ToRegister(instr->temp()), Immediate(0)); |
| 1549 | DeoptimizeIf(less, instr, "minus zero"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1550 | } |
| 1551 | } else { |
| 1552 | // Test the non-zero operand for negative sign. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1553 | __ or_(ToRegister(instr->temp()), ToOperand(right)); |
| 1554 | DeoptimizeIf(sign, instr, "minus zero"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1555 | } |
| 1556 | __ bind(&done); |
| 1557 | } |
| 1558 | } |
| 1559 | |
| 1560 | |
| 1561 | void LCodeGen::DoBitI(LBitI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1562 | LOperand* left = instr->left(); |
| 1563 | LOperand* right = instr->right(); |
| 1564 | DCHECK(left->Equals(instr->result())); |
| 1565 | DCHECK(left->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1566 | |
| 1567 | if (right->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1568 | int32_t right_operand = |
| 1569 | ToRepresentation(LConstantOperand::cast(right), |
| 1570 | instr->hydrogen()->representation()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1571 | switch (instr->op()) { |
| 1572 | case Token::BIT_AND: |
| 1573 | __ and_(ToRegister(left), right_operand); |
| 1574 | break; |
| 1575 | case Token::BIT_OR: |
| 1576 | __ or_(ToRegister(left), right_operand); |
| 1577 | break; |
| 1578 | case Token::BIT_XOR: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1579 | if (right_operand == int32_t(~0)) { |
| 1580 | __ not_(ToRegister(left)); |
| 1581 | } else { |
| 1582 | __ xor_(ToRegister(left), right_operand); |
| 1583 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1584 | break; |
| 1585 | default: |
| 1586 | UNREACHABLE(); |
| 1587 | break; |
| 1588 | } |
| 1589 | } else { |
| 1590 | switch (instr->op()) { |
| 1591 | case Token::BIT_AND: |
| 1592 | __ and_(ToRegister(left), ToOperand(right)); |
| 1593 | break; |
| 1594 | case Token::BIT_OR: |
| 1595 | __ or_(ToRegister(left), ToOperand(right)); |
| 1596 | break; |
| 1597 | case Token::BIT_XOR: |
| 1598 | __ xor_(ToRegister(left), ToOperand(right)); |
| 1599 | break; |
| 1600 | default: |
| 1601 | UNREACHABLE(); |
| 1602 | break; |
| 1603 | } |
| 1604 | } |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | void LCodeGen::DoShiftI(LShiftI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1609 | LOperand* left = instr->left(); |
| 1610 | LOperand* right = instr->right(); |
| 1611 | DCHECK(left->Equals(instr->result())); |
| 1612 | DCHECK(left->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1613 | if (right->IsRegister()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1614 | DCHECK(ToRegister(right).is(ecx)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1615 | |
| 1616 | switch (instr->op()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1617 | case Token::ROR: |
| 1618 | __ ror_cl(ToRegister(left)); |
| 1619 | break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1620 | case Token::SAR: |
| 1621 | __ sar_cl(ToRegister(left)); |
| 1622 | break; |
| 1623 | case Token::SHR: |
| 1624 | __ shr_cl(ToRegister(left)); |
| 1625 | if (instr->can_deopt()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1626 | __ test(ToRegister(left), ToRegister(left)); |
| 1627 | DeoptimizeIf(sign, instr, "negative value"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1628 | } |
| 1629 | break; |
| 1630 | case Token::SHL: |
| 1631 | __ shl_cl(ToRegister(left)); |
| 1632 | break; |
| 1633 | default: |
| 1634 | UNREACHABLE(); |
| 1635 | break; |
| 1636 | } |
| 1637 | } else { |
| 1638 | int value = ToInteger32(LConstantOperand::cast(right)); |
| 1639 | uint8_t shift_count = static_cast<uint8_t>(value & 0x1F); |
| 1640 | switch (instr->op()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1641 | case Token::ROR: |
| 1642 | if (shift_count == 0 && instr->can_deopt()) { |
| 1643 | __ test(ToRegister(left), ToRegister(left)); |
| 1644 | DeoptimizeIf(sign, instr, "negative value"); |
| 1645 | } else { |
| 1646 | __ ror(ToRegister(left), shift_count); |
| 1647 | } |
| 1648 | break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1649 | case Token::SAR: |
| 1650 | if (shift_count != 0) { |
| 1651 | __ sar(ToRegister(left), shift_count); |
| 1652 | } |
| 1653 | break; |
| 1654 | case Token::SHR: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1655 | if (shift_count != 0) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1656 | __ shr(ToRegister(left), shift_count); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1657 | } else if (instr->can_deopt()) { |
| 1658 | __ test(ToRegister(left), ToRegister(left)); |
| 1659 | DeoptimizeIf(sign, instr, "negative value"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1660 | } |
| 1661 | break; |
| 1662 | case Token::SHL: |
| 1663 | if (shift_count != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1664 | if (instr->hydrogen_value()->representation().IsSmi() && |
| 1665 | instr->can_deopt()) { |
| 1666 | if (shift_count != 1) { |
| 1667 | __ shl(ToRegister(left), shift_count - 1); |
| 1668 | } |
| 1669 | __ SmiTag(ToRegister(left)); |
| 1670 | DeoptimizeIf(overflow, instr, "overflow"); |
| 1671 | } else { |
| 1672 | __ shl(ToRegister(left), shift_count); |
| 1673 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1674 | } |
| 1675 | break; |
| 1676 | default: |
| 1677 | UNREACHABLE(); |
| 1678 | break; |
| 1679 | } |
| 1680 | } |
| 1681 | } |
| 1682 | |
| 1683 | |
| 1684 | void LCodeGen::DoSubI(LSubI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1685 | LOperand* left = instr->left(); |
| 1686 | LOperand* right = instr->right(); |
| 1687 | DCHECK(left->Equals(instr->result())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1688 | |
| 1689 | if (right->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1690 | __ sub(ToOperand(left), |
| 1691 | ToImmediate(right, instr->hydrogen()->representation())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1692 | } else { |
| 1693 | __ sub(ToRegister(left), ToOperand(right)); |
| 1694 | } |
| 1695 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1696 | DeoptimizeIf(overflow, instr, "overflow"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1697 | } |
| 1698 | } |
| 1699 | |
| 1700 | |
| 1701 | void LCodeGen::DoConstantI(LConstantI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1702 | __ Move(ToRegister(instr->result()), Immediate(instr->value())); |
| 1703 | } |
| 1704 | |
| 1705 | |
| 1706 | void LCodeGen::DoConstantS(LConstantS* instr) { |
| 1707 | __ Move(ToRegister(instr->result()), Immediate(instr->value())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1708 | } |
| 1709 | |
| 1710 | |
| 1711 | void LCodeGen::DoConstantD(LConstantD* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1712 | double v = instr->value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1713 | uint64_t int_val = bit_cast<uint64_t, double>(v); |
| 1714 | int32_t lower = static_cast<int32_t>(int_val); |
| 1715 | int32_t upper = static_cast<int32_t>(int_val >> (kBitsPerInt)); |
| 1716 | DCHECK(instr->result()->IsDoubleRegister()); |
| 1717 | |
| 1718 | XMMRegister res = ToDoubleRegister(instr->result()); |
| 1719 | if (int_val == 0) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1720 | __ xorps(res, res); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1721 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1722 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1723 | if (CpuFeatures::IsSupported(SSE4_1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1724 | CpuFeatureScope scope2(masm(), SSE4_1); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1725 | if (lower != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1726 | __ Move(temp, Immediate(lower)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1727 | __ movd(res, Operand(temp)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1728 | __ Move(temp, Immediate(upper)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1729 | __ pinsrd(res, Operand(temp), 1); |
| 1730 | } else { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1731 | __ xorps(res, res); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1732 | __ Move(temp, Immediate(upper)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1733 | __ pinsrd(res, Operand(temp), 1); |
| 1734 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1735 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1736 | __ Move(temp, Immediate(upper)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1737 | __ movd(res, Operand(temp)); |
| 1738 | __ psllq(res, 32); |
| 1739 | if (lower != 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1740 | XMMRegister xmm_scratch = double_scratch0(); |
| 1741 | __ Move(temp, Immediate(lower)); |
| 1742 | __ movd(xmm_scratch, Operand(temp)); |
| 1743 | __ orps(res, xmm_scratch); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 1744 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1745 | } |
| 1746 | } |
| 1747 | } |
| 1748 | |
| 1749 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1750 | void LCodeGen::DoConstantE(LConstantE* instr) { |
| 1751 | __ lea(ToRegister(instr->result()), Operand::StaticVariable(instr->value())); |
| 1752 | } |
| 1753 | |
| 1754 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1755 | void LCodeGen::DoConstantT(LConstantT* instr) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1756 | Register reg = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1757 | Handle<Object> object = instr->value(isolate()); |
| 1758 | AllowDeferredHandleDereference smi_check; |
| 1759 | __ LoadObject(reg, object); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1760 | } |
| 1761 | |
| 1762 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1763 | void LCodeGen::DoMapEnumLength(LMapEnumLength* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1764 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1765 | Register map = ToRegister(instr->value()); |
| 1766 | __ EnumLength(result, map); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1767 | } |
| 1768 | |
| 1769 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1770 | void LCodeGen::DoDateField(LDateField* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | Register object = ToRegister(instr->date()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1772 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1773 | Register scratch = ToRegister(instr->temp()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1774 | Smi* index = instr->index(); |
| 1775 | Label runtime, done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1776 | DCHECK(object.is(result)); |
| 1777 | DCHECK(object.is(eax)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1778 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1779 | __ test(object, Immediate(kSmiTagMask)); |
| 1780 | DeoptimizeIf(zero, instr, "Smi"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1781 | __ CmpObjectType(object, JS_DATE_TYPE, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1782 | DeoptimizeIf(not_equal, instr, "not a date object"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1783 | |
| 1784 | if (index->value() == 0) { |
| 1785 | __ mov(result, FieldOperand(object, JSDate::kValueOffset)); |
| 1786 | } else { |
| 1787 | if (index->value() < JSDate::kFirstUncachedField) { |
| 1788 | ExternalReference stamp = ExternalReference::date_cache_stamp(isolate()); |
| 1789 | __ mov(scratch, Operand::StaticVariable(stamp)); |
| 1790 | __ cmp(scratch, FieldOperand(object, JSDate::kCacheStampOffset)); |
| 1791 | __ j(not_equal, &runtime, Label::kNear); |
| 1792 | __ mov(result, FieldOperand(object, JSDate::kValueOffset + |
| 1793 | kPointerSize * index->value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1794 | __ jmp(&done, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1795 | } |
| 1796 | __ bind(&runtime); |
| 1797 | __ PrepareCallCFunction(2, scratch); |
| 1798 | __ mov(Operand(esp, 0), object); |
| 1799 | __ mov(Operand(esp, 1 * kPointerSize), Immediate(index)); |
| 1800 | __ CallCFunction(ExternalReference::get_date_field_function(isolate()), 2); |
| 1801 | __ bind(&done); |
| 1802 | } |
| 1803 | } |
| 1804 | |
| 1805 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1806 | Operand LCodeGen::BuildSeqStringOperand(Register string, |
| 1807 | LOperand* index, |
| 1808 | String::Encoding encoding) { |
| 1809 | if (index->IsConstantOperand()) { |
| 1810 | int offset = ToRepresentation(LConstantOperand::cast(index), |
| 1811 | Representation::Integer32()); |
| 1812 | if (encoding == String::TWO_BYTE_ENCODING) { |
| 1813 | offset *= kUC16Size; |
| 1814 | } |
| 1815 | STATIC_ASSERT(kCharSize == 1); |
| 1816 | return FieldOperand(string, SeqString::kHeaderSize + offset); |
| 1817 | } |
| 1818 | return FieldOperand( |
| 1819 | string, ToRegister(index), |
| 1820 | encoding == String::ONE_BYTE_ENCODING ? times_1 : times_2, |
| 1821 | SeqString::kHeaderSize); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1822 | } |
| 1823 | |
| 1824 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1825 | void LCodeGen::DoSeqStringGetChar(LSeqStringGetChar* instr) { |
| 1826 | String::Encoding encoding = instr->hydrogen()->encoding(); |
| 1827 | Register result = ToRegister(instr->result()); |
| 1828 | Register string = ToRegister(instr->string()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1829 | |
| 1830 | if (FLAG_debug_code) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1831 | __ push(string); |
| 1832 | __ mov(string, FieldOperand(string, HeapObject::kMapOffset)); |
| 1833 | __ movzx_b(string, FieldOperand(string, Map::kInstanceTypeOffset)); |
| 1834 | |
| 1835 | __ and_(string, Immediate(kStringRepresentationMask | kStringEncodingMask)); |
| 1836 | static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
| 1837 | static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
| 1838 | __ cmp(string, Immediate(encoding == String::ONE_BYTE_ENCODING |
| 1839 | ? one_byte_seq_type : two_byte_seq_type)); |
| 1840 | __ Check(equal, kUnexpectedStringType); |
| 1841 | __ pop(string); |
| 1842 | } |
| 1843 | |
| 1844 | Operand operand = BuildSeqStringOperand(string, instr->index(), encoding); |
| 1845 | if (encoding == String::ONE_BYTE_ENCODING) { |
| 1846 | __ movzx_b(result, operand); |
| 1847 | } else { |
| 1848 | __ movzx_w(result, operand); |
| 1849 | } |
| 1850 | } |
| 1851 | |
| 1852 | |
| 1853 | void LCodeGen::DoSeqStringSetChar(LSeqStringSetChar* instr) { |
| 1854 | String::Encoding encoding = instr->hydrogen()->encoding(); |
| 1855 | Register string = ToRegister(instr->string()); |
| 1856 | |
| 1857 | if (FLAG_debug_code) { |
| 1858 | Register value = ToRegister(instr->value()); |
| 1859 | Register index = ToRegister(instr->index()); |
| 1860 | static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; |
| 1861 | static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; |
| 1862 | int encoding_mask = |
| 1863 | instr->hydrogen()->encoding() == String::ONE_BYTE_ENCODING |
| 1864 | ? one_byte_seq_type : two_byte_seq_type; |
| 1865 | __ EmitSeqStringSetCharCheck(string, index, value, encoding_mask); |
| 1866 | } |
| 1867 | |
| 1868 | Operand operand = BuildSeqStringOperand(string, instr->index(), encoding); |
| 1869 | if (instr->value()->IsConstantOperand()) { |
| 1870 | int value = ToRepresentation(LConstantOperand::cast(instr->value()), |
| 1871 | Representation::Integer32()); |
| 1872 | DCHECK_LE(0, value); |
| 1873 | if (encoding == String::ONE_BYTE_ENCODING) { |
| 1874 | DCHECK_LE(value, String::kMaxOneByteCharCode); |
| 1875 | __ mov_b(operand, static_cast<int8_t>(value)); |
| 1876 | } else { |
| 1877 | DCHECK_LE(value, String::kMaxUtf16CodeUnit); |
| 1878 | __ mov_w(operand, static_cast<int16_t>(value)); |
| 1879 | } |
| 1880 | } else { |
| 1881 | Register value = ToRegister(instr->value()); |
| 1882 | if (encoding == String::ONE_BYTE_ENCODING) { |
| 1883 | __ mov_b(operand, value); |
| 1884 | } else { |
| 1885 | __ mov_w(operand, value); |
| 1886 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1887 | } |
| 1888 | } |
| 1889 | |
| 1890 | |
| 1891 | void LCodeGen::DoAddI(LAddI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1892 | LOperand* left = instr->left(); |
| 1893 | LOperand* right = instr->right(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1894 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1895 | if (LAddI::UseLea(instr->hydrogen()) && !left->Equals(instr->result())) { |
| 1896 | if (right->IsConstantOperand()) { |
| 1897 | int32_t offset = ToRepresentation(LConstantOperand::cast(right), |
| 1898 | instr->hydrogen()->representation()); |
| 1899 | __ lea(ToRegister(instr->result()), MemOperand(ToRegister(left), offset)); |
| 1900 | } else { |
| 1901 | Operand address(ToRegister(left), ToRegister(right), times_1, 0); |
| 1902 | __ lea(ToRegister(instr->result()), address); |
| 1903 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1904 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1905 | if (right->IsConstantOperand()) { |
| 1906 | __ add(ToOperand(left), |
| 1907 | ToImmediate(right, instr->hydrogen()->representation())); |
| 1908 | } else { |
| 1909 | __ add(ToRegister(left), ToOperand(right)); |
| 1910 | } |
| 1911 | if (instr->hydrogen()->CheckFlag(HValue::kCanOverflow)) { |
| 1912 | DeoptimizeIf(overflow, instr, "overflow"); |
| 1913 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1914 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1915 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1916 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1917 | |
| 1918 | void LCodeGen::DoMathMinMax(LMathMinMax* instr) { |
| 1919 | LOperand* left = instr->left(); |
| 1920 | LOperand* right = instr->right(); |
| 1921 | DCHECK(left->Equals(instr->result())); |
| 1922 | HMathMinMax::Operation operation = instr->hydrogen()->operation(); |
| 1923 | if (instr->hydrogen()->representation().IsSmiOrInteger32()) { |
| 1924 | Label return_left; |
| 1925 | Condition condition = (operation == HMathMinMax::kMathMin) |
| 1926 | ? less_equal |
| 1927 | : greater_equal; |
| 1928 | if (right->IsConstantOperand()) { |
| 1929 | Operand left_op = ToOperand(left); |
| 1930 | Immediate immediate = ToImmediate(LConstantOperand::cast(instr->right()), |
| 1931 | instr->hydrogen()->representation()); |
| 1932 | __ cmp(left_op, immediate); |
| 1933 | __ j(condition, &return_left, Label::kNear); |
| 1934 | __ mov(left_op, immediate); |
| 1935 | } else { |
| 1936 | Register left_reg = ToRegister(left); |
| 1937 | Operand right_op = ToOperand(right); |
| 1938 | __ cmp(left_reg, right_op); |
| 1939 | __ j(condition, &return_left, Label::kNear); |
| 1940 | __ mov(left_reg, right_op); |
| 1941 | } |
| 1942 | __ bind(&return_left); |
| 1943 | } else { |
| 1944 | DCHECK(instr->hydrogen()->representation().IsDouble()); |
| 1945 | Label check_nan_left, check_zero, return_left, return_right; |
| 1946 | Condition condition = (operation == HMathMinMax::kMathMin) ? below : above; |
| 1947 | XMMRegister left_reg = ToDoubleRegister(left); |
| 1948 | XMMRegister right_reg = ToDoubleRegister(right); |
| 1949 | __ ucomisd(left_reg, right_reg); |
| 1950 | __ j(parity_even, &check_nan_left, Label::kNear); // At least one NaN. |
| 1951 | __ j(equal, &check_zero, Label::kNear); // left == right. |
| 1952 | __ j(condition, &return_left, Label::kNear); |
| 1953 | __ jmp(&return_right, Label::kNear); |
| 1954 | |
| 1955 | __ bind(&check_zero); |
| 1956 | XMMRegister xmm_scratch = double_scratch0(); |
| 1957 | __ xorps(xmm_scratch, xmm_scratch); |
| 1958 | __ ucomisd(left_reg, xmm_scratch); |
| 1959 | __ j(not_equal, &return_left, Label::kNear); // left == right != 0. |
| 1960 | // At this point, both left and right are either 0 or -0. |
| 1961 | if (operation == HMathMinMax::kMathMin) { |
| 1962 | __ orpd(left_reg, right_reg); |
| 1963 | } else { |
| 1964 | // Since we operate on +0 and/or -0, addsd and andsd have the same effect. |
| 1965 | __ addsd(left_reg, right_reg); |
| 1966 | } |
| 1967 | __ jmp(&return_left, Label::kNear); |
| 1968 | |
| 1969 | __ bind(&check_nan_left); |
| 1970 | __ ucomisd(left_reg, left_reg); // NaN check. |
| 1971 | __ j(parity_even, &return_left, Label::kNear); // left == NaN. |
| 1972 | __ bind(&return_right); |
| 1973 | __ movaps(left_reg, right_reg); |
| 1974 | |
| 1975 | __ bind(&return_left); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | void LCodeGen::DoArithmeticD(LArithmeticD* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1981 | XMMRegister left = ToDoubleRegister(instr->left()); |
| 1982 | XMMRegister right = ToDoubleRegister(instr->right()); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1983 | XMMRegister result = ToDoubleRegister(instr->result()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1984 | switch (instr->op()) { |
| 1985 | case Token::ADD: |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1986 | __ addsd(left, right); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1987 | break; |
| 1988 | case Token::SUB: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1989 | __ subsd(left, right); |
| 1990 | break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1991 | case Token::MUL: |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1992 | __ mulsd(left, right); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1993 | break; |
| 1994 | case Token::DIV: |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1995 | __ divsd(left, right); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1996 | // Don't delete this mov. It may improve performance on some CPUs, |
| 1997 | // when there is a mulsd depending on the result |
| 1998 | __ movaps(left, left); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1999 | break; |
| 2000 | case Token::MOD: { |
| 2001 | // Pass two doubles as arguments on the stack. |
| 2002 | __ PrepareCallCFunction(4, eax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2003 | __ movsd(Operand(esp, 0 * kDoubleSize), left); |
| 2004 | __ movsd(Operand(esp, 1 * kDoubleSize), right); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2005 | __ CallCFunction( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2006 | ExternalReference::mod_two_doubles_operation(isolate()), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2007 | 4); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2008 | |
| 2009 | // Return value is in st(0) on ia32. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2010 | // Store it into the result register. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2011 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
| 2012 | __ fstp_d(Operand(esp, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2013 | __ movsd(result, Operand(esp, 0)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2014 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 2015 | break; |
| 2016 | } |
| 2017 | default: |
| 2018 | UNREACHABLE(); |
| 2019 | break; |
| 2020 | } |
| 2021 | } |
| 2022 | |
| 2023 | |
| 2024 | void LCodeGen::DoArithmeticT(LArithmeticT* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2025 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 2026 | DCHECK(ToRegister(instr->left()).is(edx)); |
| 2027 | DCHECK(ToRegister(instr->right()).is(eax)); |
| 2028 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2029 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2030 | Handle<Code> code = |
| 2031 | CodeFactory::BinaryOpIC(isolate(), instr->op(), NO_OVERWRITE).code(); |
| 2032 | CallCode(code, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2033 | } |
| 2034 | |
| 2035 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2036 | template<class InstrType> |
| 2037 | void LCodeGen::EmitBranch(InstrType instr, Condition cc) { |
| 2038 | int left_block = instr->TrueDestination(chunk_); |
| 2039 | int right_block = instr->FalseDestination(chunk_); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2040 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2041 | int next_block = GetNextEmittedBlock(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2042 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2043 | if (right_block == left_block || cc == no_condition) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2044 | EmitGoto(left_block); |
| 2045 | } else if (left_block == next_block) { |
| 2046 | __ j(NegateCondition(cc), chunk_->GetAssemblyLabel(right_block)); |
| 2047 | } else if (right_block == next_block) { |
| 2048 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 2049 | } else { |
| 2050 | __ j(cc, chunk_->GetAssemblyLabel(left_block)); |
| 2051 | __ jmp(chunk_->GetAssemblyLabel(right_block)); |
| 2052 | } |
| 2053 | } |
| 2054 | |
| 2055 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2056 | template<class InstrType> |
| 2057 | void LCodeGen::EmitFalseBranch(InstrType instr, Condition cc) { |
| 2058 | int false_block = instr->FalseDestination(chunk_); |
| 2059 | if (cc == no_condition) { |
| 2060 | __ jmp(chunk_->GetAssemblyLabel(false_block)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2061 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2062 | __ j(cc, chunk_->GetAssemblyLabel(false_block)); |
| 2063 | } |
| 2064 | } |
| 2065 | |
| 2066 | |
| 2067 | void LCodeGen::DoBranch(LBranch* instr) { |
| 2068 | Representation r = instr->hydrogen()->value()->representation(); |
| 2069 | if (r.IsSmiOrInteger32()) { |
| 2070 | Register reg = ToRegister(instr->value()); |
| 2071 | __ test(reg, Operand(reg)); |
| 2072 | EmitBranch(instr, not_zero); |
| 2073 | } else if (r.IsDouble()) { |
| 2074 | DCHECK(!info()->IsStub()); |
| 2075 | XMMRegister reg = ToDoubleRegister(instr->value()); |
| 2076 | XMMRegister xmm_scratch = double_scratch0(); |
| 2077 | __ xorps(xmm_scratch, xmm_scratch); |
| 2078 | __ ucomisd(reg, xmm_scratch); |
| 2079 | EmitBranch(instr, not_equal); |
| 2080 | } else { |
| 2081 | DCHECK(r.IsTagged()); |
| 2082 | Register reg = ToRegister(instr->value()); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2083 | HType type = instr->hydrogen()->value()->type(); |
| 2084 | if (type.IsBoolean()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2085 | DCHECK(!info()->IsStub()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2086 | __ cmp(reg, factory()->true_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2087 | EmitBranch(instr, equal); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2088 | } else if (type.IsSmi()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2089 | DCHECK(!info()->IsStub()); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2090 | __ test(reg, Operand(reg)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2091 | EmitBranch(instr, not_equal); |
| 2092 | } else if (type.IsJSArray()) { |
| 2093 | DCHECK(!info()->IsStub()); |
| 2094 | EmitBranch(instr, no_condition); |
| 2095 | } else if (type.IsHeapNumber()) { |
| 2096 | DCHECK(!info()->IsStub()); |
| 2097 | XMMRegister xmm_scratch = double_scratch0(); |
| 2098 | __ xorps(xmm_scratch, xmm_scratch); |
| 2099 | __ ucomisd(xmm_scratch, FieldOperand(reg, HeapNumber::kValueOffset)); |
| 2100 | EmitBranch(instr, not_equal); |
| 2101 | } else if (type.IsString()) { |
| 2102 | DCHECK(!info()->IsStub()); |
| 2103 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
| 2104 | EmitBranch(instr, not_equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2105 | } else { |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2106 | ToBooleanStub::Types expected = instr->hydrogen()->expected_input_types(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2107 | if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2108 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2109 | if (expected.Contains(ToBooleanStub::UNDEFINED)) { |
| 2110 | // undefined -> false. |
| 2111 | __ cmp(reg, factory()->undefined_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2112 | __ j(equal, instr->FalseLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2113 | } |
| 2114 | if (expected.Contains(ToBooleanStub::BOOLEAN)) { |
| 2115 | // true -> true. |
| 2116 | __ cmp(reg, factory()->true_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2117 | __ j(equal, instr->TrueLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2118 | // false -> false. |
| 2119 | __ cmp(reg, factory()->false_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2120 | __ j(equal, instr->FalseLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2121 | } |
| 2122 | if (expected.Contains(ToBooleanStub::NULL_TYPE)) { |
| 2123 | // 'null' -> false. |
| 2124 | __ cmp(reg, factory()->null_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2125 | __ j(equal, instr->FalseLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2126 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2127 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2128 | if (expected.Contains(ToBooleanStub::SMI)) { |
| 2129 | // Smis: 0 -> false, all other -> true. |
| 2130 | __ test(reg, Operand(reg)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2131 | __ j(equal, instr->FalseLabel(chunk_)); |
| 2132 | __ JumpIfSmi(reg, instr->TrueLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2133 | } else if (expected.NeedsMap()) { |
| 2134 | // If we need a map later and have a Smi -> deopt. |
| 2135 | __ test(reg, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2136 | DeoptimizeIf(zero, instr, "Smi"); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2137 | } |
| 2138 | |
| 2139 | Register map = no_reg; // Keep the compiler happy. |
| 2140 | if (expected.NeedsMap()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2141 | map = ToRegister(instr->temp()); |
| 2142 | DCHECK(!map.is(reg)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2143 | __ mov(map, FieldOperand(reg, HeapObject::kMapOffset)); |
| 2144 | |
| 2145 | if (expected.CanBeUndetectable()) { |
| 2146 | // Undetectable -> false. |
| 2147 | __ test_b(FieldOperand(map, Map::kBitFieldOffset), |
| 2148 | 1 << Map::kIsUndetectable); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2149 | __ j(not_zero, instr->FalseLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2150 | } |
| 2151 | } |
| 2152 | |
| 2153 | if (expected.Contains(ToBooleanStub::SPEC_OBJECT)) { |
| 2154 | // spec object -> true. |
| 2155 | __ CmpInstanceType(map, FIRST_SPEC_OBJECT_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2156 | __ j(above_equal, instr->TrueLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | if (expected.Contains(ToBooleanStub::STRING)) { |
| 2160 | // String value -> false iff empty. |
| 2161 | Label not_string; |
| 2162 | __ CmpInstanceType(map, FIRST_NONSTRING_TYPE); |
| 2163 | __ j(above_equal, ¬_string, Label::kNear); |
| 2164 | __ cmp(FieldOperand(reg, String::kLengthOffset), Immediate(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2165 | __ j(not_zero, instr->TrueLabel(chunk_)); |
| 2166 | __ jmp(instr->FalseLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2167 | __ bind(¬_string); |
| 2168 | } |
| 2169 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2170 | if (expected.Contains(ToBooleanStub::SYMBOL)) { |
| 2171 | // Symbol value -> true. |
| 2172 | __ CmpInstanceType(map, SYMBOL_TYPE); |
| 2173 | __ j(equal, instr->TrueLabel(chunk_)); |
| 2174 | } |
| 2175 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2176 | if (expected.Contains(ToBooleanStub::HEAP_NUMBER)) { |
| 2177 | // heap number -> false iff +0, -0, or NaN. |
| 2178 | Label not_heap_number; |
| 2179 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), |
| 2180 | factory()->heap_number_map()); |
| 2181 | __ j(not_equal, ¬_heap_number, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2182 | XMMRegister xmm_scratch = double_scratch0(); |
| 2183 | __ xorps(xmm_scratch, xmm_scratch); |
| 2184 | __ ucomisd(xmm_scratch, FieldOperand(reg, HeapNumber::kValueOffset)); |
| 2185 | __ j(zero, instr->FalseLabel(chunk_)); |
| 2186 | __ jmp(instr->TrueLabel(chunk_)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2187 | __ bind(¬_heap_number); |
| 2188 | } |
| 2189 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2190 | if (!expected.IsGeneric()) { |
| 2191 | // We've seen something for the first time -> deopt. |
| 2192 | // This can only happen if we are not generic already. |
| 2193 | DeoptimizeIf(no_condition, instr, "unexpected object"); |
| 2194 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2195 | } |
| 2196 | } |
| 2197 | } |
| 2198 | |
| 2199 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2200 | void LCodeGen::EmitGoto(int block) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2201 | if (!IsNextEmittedBlock(block)) { |
| 2202 | __ jmp(chunk_->GetAssemblyLabel(LookupDestination(block))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2207 | void LCodeGen::DoGoto(LGoto* instr) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2208 | EmitGoto(instr->block_id()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2209 | } |
| 2210 | |
| 2211 | |
| 2212 | Condition LCodeGen::TokenToCondition(Token::Value op, bool is_unsigned) { |
| 2213 | Condition cond = no_condition; |
| 2214 | switch (op) { |
| 2215 | case Token::EQ: |
| 2216 | case Token::EQ_STRICT: |
| 2217 | cond = equal; |
| 2218 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2219 | case Token::NE: |
| 2220 | case Token::NE_STRICT: |
| 2221 | cond = not_equal; |
| 2222 | break; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2223 | case Token::LT: |
| 2224 | cond = is_unsigned ? below : less; |
| 2225 | break; |
| 2226 | case Token::GT: |
| 2227 | cond = is_unsigned ? above : greater; |
| 2228 | break; |
| 2229 | case Token::LTE: |
| 2230 | cond = is_unsigned ? below_equal : less_equal; |
| 2231 | break; |
| 2232 | case Token::GTE: |
| 2233 | cond = is_unsigned ? above_equal : greater_equal; |
| 2234 | break; |
| 2235 | case Token::IN: |
| 2236 | case Token::INSTANCEOF: |
| 2237 | default: |
| 2238 | UNREACHABLE(); |
| 2239 | } |
| 2240 | return cond; |
| 2241 | } |
| 2242 | |
| 2243 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2244 | void LCodeGen::DoCompareNumericAndBranch(LCompareNumericAndBranch* instr) { |
| 2245 | LOperand* left = instr->left(); |
| 2246 | LOperand* right = instr->right(); |
| 2247 | bool is_unsigned = |
| 2248 | instr->is_double() || |
| 2249 | instr->hydrogen()->left()->CheckFlag(HInstruction::kUint32) || |
| 2250 | instr->hydrogen()->right()->CheckFlag(HInstruction::kUint32); |
| 2251 | Condition cc = TokenToCondition(instr->op(), is_unsigned); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2252 | |
| 2253 | if (left->IsConstantOperand() && right->IsConstantOperand()) { |
| 2254 | // We can statically evaluate the comparison. |
| 2255 | double left_val = ToDouble(LConstantOperand::cast(left)); |
| 2256 | double right_val = ToDouble(LConstantOperand::cast(right)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2257 | int next_block = EvalComparison(instr->op(), left_val, right_val) ? |
| 2258 | instr->TrueDestination(chunk_) : instr->FalseDestination(chunk_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2259 | EmitGoto(next_block); |
| 2260 | } else { |
| 2261 | if (instr->is_double()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2262 | __ ucomisd(ToDoubleRegister(left), ToDoubleRegister(right)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2263 | // Don't base result on EFLAGS when a NaN is involved. Instead |
| 2264 | // jump to the false block. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2265 | __ j(parity_even, instr->FalseLabel(chunk_)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2266 | } else { |
| 2267 | if (right->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2268 | __ cmp(ToOperand(left), |
| 2269 | ToImmediate(right, instr->hydrogen()->representation())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2270 | } else if (left->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2271 | __ cmp(ToOperand(right), |
| 2272 | ToImmediate(left, instr->hydrogen()->representation())); |
| 2273 | // We commuted the operands, so commute the condition. |
| 2274 | cc = CommuteCondition(cc); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2275 | } else { |
| 2276 | __ cmp(ToRegister(left), ToOperand(right)); |
| 2277 | } |
| 2278 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2279 | EmitBranch(instr, cc); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2280 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2281 | } |
| 2282 | |
| 2283 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2284 | void LCodeGen::DoCmpObjectEqAndBranch(LCmpObjectEqAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2285 | Register left = ToRegister(instr->left()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2286 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2287 | if (instr->right()->IsConstantOperand()) { |
| 2288 | Handle<Object> right = ToHandle(LConstantOperand::cast(instr->right())); |
| 2289 | __ CmpObject(left, right); |
| 2290 | } else { |
| 2291 | Operand right = ToOperand(instr->right()); |
| 2292 | __ cmp(left, right); |
| 2293 | } |
| 2294 | EmitBranch(instr, equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2295 | } |
| 2296 | |
| 2297 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2298 | void LCodeGen::DoCmpHoleAndBranch(LCmpHoleAndBranch* instr) { |
| 2299 | if (instr->hydrogen()->representation().IsTagged()) { |
| 2300 | Register input_reg = ToRegister(instr->object()); |
| 2301 | __ cmp(input_reg, factory()->the_hole_value()); |
| 2302 | EmitBranch(instr, equal); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2303 | return; |
| 2304 | } |
| 2305 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2306 | XMMRegister input_reg = ToDoubleRegister(instr->object()); |
| 2307 | __ ucomisd(input_reg, input_reg); |
| 2308 | EmitFalseBranch(instr, parity_odd); |
| 2309 | |
| 2310 | __ sub(esp, Immediate(kDoubleSize)); |
| 2311 | __ movsd(MemOperand(esp, 0), input_reg); |
| 2312 | |
| 2313 | __ add(esp, Immediate(kDoubleSize)); |
| 2314 | int offset = sizeof(kHoleNanUpper32); |
| 2315 | __ cmp(MemOperand(esp, -offset), Immediate(kHoleNanUpper32)); |
| 2316 | EmitBranch(instr, equal); |
| 2317 | } |
| 2318 | |
| 2319 | |
| 2320 | void LCodeGen::DoCompareMinusZeroAndBranch(LCompareMinusZeroAndBranch* instr) { |
| 2321 | Representation rep = instr->hydrogen()->value()->representation(); |
| 2322 | DCHECK(!rep.IsInteger32()); |
| 2323 | Register scratch = ToRegister(instr->temp()); |
| 2324 | |
| 2325 | if (rep.IsDouble()) { |
| 2326 | XMMRegister value = ToDoubleRegister(instr->value()); |
| 2327 | XMMRegister xmm_scratch = double_scratch0(); |
| 2328 | __ xorps(xmm_scratch, xmm_scratch); |
| 2329 | __ ucomisd(xmm_scratch, value); |
| 2330 | EmitFalseBranch(instr, not_equal); |
| 2331 | __ movmskpd(scratch, value); |
| 2332 | __ test(scratch, Immediate(1)); |
| 2333 | EmitBranch(instr, not_zero); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2334 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2335 | Register value = ToRegister(instr->value()); |
| 2336 | Handle<Map> map = masm()->isolate()->factory()->heap_number_map(); |
| 2337 | __ CheckMap(value, map, instr->FalseLabel(chunk()), DO_SMI_CHECK); |
| 2338 | __ cmp(FieldOperand(value, HeapNumber::kExponentOffset), |
| 2339 | Immediate(0x1)); |
| 2340 | EmitFalseBranch(instr, no_overflow); |
| 2341 | __ cmp(FieldOperand(value, HeapNumber::kMantissaOffset), |
| 2342 | Immediate(0x00000000)); |
| 2343 | EmitBranch(instr, equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2344 | } |
| 2345 | } |
| 2346 | |
| 2347 | |
| 2348 | Condition LCodeGen::EmitIsObject(Register input, |
| 2349 | Register temp1, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2350 | Label* is_not_object, |
| 2351 | Label* is_object) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2352 | __ JumpIfSmi(input, is_not_object); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2353 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2354 | __ cmp(input, isolate()->factory()->null_value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2355 | __ j(equal, is_object); |
| 2356 | |
| 2357 | __ mov(temp1, FieldOperand(input, HeapObject::kMapOffset)); |
| 2358 | // Undetectable objects behave like undefined. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2359 | __ test_b(FieldOperand(temp1, Map::kBitFieldOffset), |
| 2360 | 1 << Map::kIsUndetectable); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2361 | __ j(not_zero, is_not_object); |
| 2362 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2363 | __ movzx_b(temp1, FieldOperand(temp1, Map::kInstanceTypeOffset)); |
| 2364 | __ cmp(temp1, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2365 | __ j(below, is_not_object); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2366 | __ cmp(temp1, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2367 | return below_equal; |
| 2368 | } |
| 2369 | |
| 2370 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2371 | void LCodeGen::DoIsObjectAndBranch(LIsObjectAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2372 | Register reg = ToRegister(instr->value()); |
| 2373 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2374 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2375 | Condition true_cond = EmitIsObject( |
| 2376 | reg, temp, instr->FalseLabel(chunk_), instr->TrueLabel(chunk_)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2377 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2378 | EmitBranch(instr, true_cond); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2379 | } |
| 2380 | |
| 2381 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2382 | Condition LCodeGen::EmitIsString(Register input, |
| 2383 | Register temp1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2384 | Label* is_not_string, |
| 2385 | SmiCheck check_needed = INLINE_SMI_CHECK) { |
| 2386 | if (check_needed == INLINE_SMI_CHECK) { |
| 2387 | __ JumpIfSmi(input, is_not_string); |
| 2388 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2389 | |
| 2390 | Condition cond = masm_->IsObjectStringType(input, temp1, temp1); |
| 2391 | |
| 2392 | return cond; |
| 2393 | } |
| 2394 | |
| 2395 | |
| 2396 | void LCodeGen::DoIsStringAndBranch(LIsStringAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2397 | Register reg = ToRegister(instr->value()); |
| 2398 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2399 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2400 | SmiCheck check_needed = |
| 2401 | instr->hydrogen()->value()->type().IsHeapObject() |
| 2402 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2403 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2404 | Condition true_cond = EmitIsString( |
| 2405 | reg, temp, instr->FalseLabel(chunk_), check_needed); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2406 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2407 | EmitBranch(instr, true_cond); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2408 | } |
| 2409 | |
| 2410 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2411 | void LCodeGen::DoIsSmiAndBranch(LIsSmiAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2412 | Operand input = ToOperand(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2413 | |
| 2414 | __ test(input, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2415 | EmitBranch(instr, zero); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2416 | } |
| 2417 | |
| 2418 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2419 | void LCodeGen::DoIsUndetectableAndBranch(LIsUndetectableAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2420 | Register input = ToRegister(instr->value()); |
| 2421 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2422 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2423 | if (!instr->hydrogen()->value()->type().IsHeapObject()) { |
| 2424 | STATIC_ASSERT(kSmiTag == 0); |
| 2425 | __ JumpIfSmi(input, instr->FalseLabel(chunk_)); |
| 2426 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2427 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 2428 | __ test_b(FieldOperand(temp, Map::kBitFieldOffset), |
| 2429 | 1 << Map::kIsUndetectable); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2430 | EmitBranch(instr, not_zero); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2431 | } |
| 2432 | |
| 2433 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2434 | static Condition ComputeCompareCondition(Token::Value op) { |
| 2435 | switch (op) { |
| 2436 | case Token::EQ_STRICT: |
| 2437 | case Token::EQ: |
| 2438 | return equal; |
| 2439 | case Token::LT: |
| 2440 | return less; |
| 2441 | case Token::GT: |
| 2442 | return greater; |
| 2443 | case Token::LTE: |
| 2444 | return less_equal; |
| 2445 | case Token::GTE: |
| 2446 | return greater_equal; |
| 2447 | default: |
| 2448 | UNREACHABLE(); |
| 2449 | return no_condition; |
| 2450 | } |
| 2451 | } |
| 2452 | |
| 2453 | |
| 2454 | void LCodeGen::DoStringCompareAndBranch(LStringCompareAndBranch* instr) { |
| 2455 | Token::Value op = instr->op(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2456 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2457 | Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2458 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
| 2459 | |
| 2460 | Condition condition = ComputeCompareCondition(op); |
| 2461 | __ test(eax, Operand(eax)); |
| 2462 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2463 | EmitBranch(instr, condition); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2464 | } |
| 2465 | |
| 2466 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2467 | static InstanceType TestType(HHasInstanceTypeAndBranch* instr) { |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2468 | InstanceType from = instr->from(); |
| 2469 | InstanceType to = instr->to(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2470 | if (from == FIRST_TYPE) return to; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2471 | DCHECK(from == to || to == LAST_TYPE); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2472 | return from; |
| 2473 | } |
| 2474 | |
| 2475 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2476 | static Condition BranchCondition(HHasInstanceTypeAndBranch* instr) { |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2477 | InstanceType from = instr->from(); |
| 2478 | InstanceType to = instr->to(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2479 | if (from == to) return equal; |
| 2480 | if (to == LAST_TYPE) return above_equal; |
| 2481 | if (from == FIRST_TYPE) return below_equal; |
| 2482 | UNREACHABLE(); |
| 2483 | return equal; |
| 2484 | } |
| 2485 | |
| 2486 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2487 | void LCodeGen::DoHasInstanceTypeAndBranch(LHasInstanceTypeAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2488 | Register input = ToRegister(instr->value()); |
| 2489 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2490 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2491 | if (!instr->hydrogen()->value()->type().IsHeapObject()) { |
| 2492 | __ JumpIfSmi(input, instr->FalseLabel(chunk_)); |
| 2493 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2494 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2495 | __ CmpObjectType(input, TestType(instr->hydrogen()), temp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2496 | EmitBranch(instr, BranchCondition(instr->hydrogen())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2497 | } |
| 2498 | |
| 2499 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2500 | void LCodeGen::DoGetCachedArrayIndex(LGetCachedArrayIndex* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2501 | Register input = ToRegister(instr->value()); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2502 | Register result = ToRegister(instr->result()); |
| 2503 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2504 | __ AssertString(input); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2505 | |
| 2506 | __ mov(result, FieldOperand(input, String::kHashFieldOffset)); |
| 2507 | __ IndexFromHash(result, result); |
| 2508 | } |
| 2509 | |
| 2510 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2511 | void LCodeGen::DoHasCachedArrayIndexAndBranch( |
| 2512 | LHasCachedArrayIndexAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2513 | Register input = ToRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2514 | |
| 2515 | __ test(FieldOperand(input, String::kHashFieldOffset), |
| 2516 | Immediate(String::kContainsCachedArrayIndexMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2517 | EmitBranch(instr, equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2518 | } |
| 2519 | |
| 2520 | |
| 2521 | // Branches to a label or falls through with the answer in the z flag. Trashes |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2522 | // the temp registers, but not the input. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2523 | void LCodeGen::EmitClassOfTest(Label* is_true, |
| 2524 | Label* is_false, |
| 2525 | Handle<String>class_name, |
| 2526 | Register input, |
| 2527 | Register temp, |
| 2528 | Register temp2) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2529 | DCHECK(!input.is(temp)); |
| 2530 | DCHECK(!input.is(temp2)); |
| 2531 | DCHECK(!temp.is(temp2)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2532 | __ JumpIfSmi(input, is_false); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2533 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2534 | if (String::Equals(isolate()->factory()->Function_string(), class_name)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2535 | // Assuming the following assertions, we can use the same compares to test |
| 2536 | // for both being a function type and being in the object type range. |
| 2537 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
| 2538 | STATIC_ASSERT(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2539 | FIRST_SPEC_OBJECT_TYPE + 1); |
| 2540 | STATIC_ASSERT(LAST_NONCALLABLE_SPEC_OBJECT_TYPE == |
| 2541 | LAST_SPEC_OBJECT_TYPE - 1); |
| 2542 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 2543 | __ CmpObjectType(input, FIRST_SPEC_OBJECT_TYPE, temp); |
| 2544 | __ j(below, is_false); |
| 2545 | __ j(equal, is_true); |
| 2546 | __ CmpInstanceType(temp, LAST_SPEC_OBJECT_TYPE); |
| 2547 | __ j(equal, is_true); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2548 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2549 | // Faster code path to avoid two compares: subtract lower bound from the |
| 2550 | // actual type and do a signed compare with the width of the type range. |
| 2551 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
| 2552 | __ movzx_b(temp2, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 2553 | __ sub(Operand(temp2), Immediate(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2554 | __ cmp(Operand(temp2), Immediate(LAST_NONCALLABLE_SPEC_OBJECT_TYPE - |
| 2555 | FIRST_NONCALLABLE_SPEC_OBJECT_TYPE)); |
| 2556 | __ j(above, is_false); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2557 | } |
| 2558 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2559 | // Now we are in the FIRST-LAST_NONCALLABLE_SPEC_OBJECT_TYPE range. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2560 | // Check if the constructor in the map is a function. |
| 2561 | __ mov(temp, FieldOperand(temp, Map::kConstructorOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2562 | // Objects with a non-function constructor have class 'Object'. |
| 2563 | __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2564 | if (String::Equals(class_name, isolate()->factory()->Object_string())) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2565 | __ j(not_equal, is_true); |
| 2566 | } else { |
| 2567 | __ j(not_equal, is_false); |
| 2568 | } |
| 2569 | |
| 2570 | // temp now contains the constructor function. Grab the |
| 2571 | // instance class name from there. |
| 2572 | __ mov(temp, FieldOperand(temp, JSFunction::kSharedFunctionInfoOffset)); |
| 2573 | __ mov(temp, FieldOperand(temp, |
| 2574 | SharedFunctionInfo::kInstanceClassNameOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2575 | // The class name we are testing against is internalized since it's a literal. |
| 2576 | // The name in the constructor is internalized because of the way the context |
| 2577 | // is booted. This routine isn't expected to work for random API-created |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2578 | // classes and it doesn't have to because you can't access it with natives |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2579 | // syntax. Since both sides are internalized it is sufficient to use an |
| 2580 | // identity comparison. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2581 | __ cmp(temp, class_name); |
| 2582 | // End with the answer in the z flag. |
| 2583 | } |
| 2584 | |
| 2585 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2586 | void LCodeGen::DoClassOfTestAndBranch(LClassOfTestAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2587 | Register input = ToRegister(instr->value()); |
| 2588 | Register temp = ToRegister(instr->temp()); |
| 2589 | Register temp2 = ToRegister(instr->temp2()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2590 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2591 | Handle<String> class_name = instr->hydrogen()->class_name(); |
| 2592 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2593 | EmitClassOfTest(instr->TrueLabel(chunk_), instr->FalseLabel(chunk_), |
| 2594 | class_name, input, temp, temp2); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2595 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2596 | EmitBranch(instr, equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2597 | } |
| 2598 | |
| 2599 | |
| 2600 | void LCodeGen::DoCmpMapAndBranch(LCmpMapAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2601 | Register reg = ToRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2602 | __ cmp(FieldOperand(reg, HeapObject::kMapOffset), instr->map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2603 | EmitBranch(instr, equal); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2604 | } |
| 2605 | |
| 2606 | |
| 2607 | void LCodeGen::DoInstanceOf(LInstanceOf* instr) { |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2608 | // Object and function are in fixed registers defined by the stub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2609 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 2610 | InstanceofStub stub(isolate(), InstanceofStub::kArgsInRegisters); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2611 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2612 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2613 | Label true_value, done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2614 | __ test(eax, Operand(eax)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2615 | __ j(zero, &true_value, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2616 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2617 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2618 | __ bind(&true_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2619 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2620 | __ bind(&done); |
| 2621 | } |
| 2622 | |
| 2623 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2624 | void LCodeGen::DoInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2625 | class DeferredInstanceOfKnownGlobal FINAL : public LDeferredCode { |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2626 | public: |
| 2627 | DeferredInstanceOfKnownGlobal(LCodeGen* codegen, |
| 2628 | LInstanceOfKnownGlobal* instr) |
| 2629 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2630 | void Generate() OVERRIDE { |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 2631 | codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2632 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2633 | LInstruction* instr() OVERRIDE { return instr_; } |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2634 | Label* map_check() { return &map_check_; } |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2635 | private: |
| 2636 | LInstanceOfKnownGlobal* instr_; |
| 2637 | Label map_check_; |
| 2638 | }; |
| 2639 | |
| 2640 | DeferredInstanceOfKnownGlobal* deferred; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2641 | deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2642 | |
| 2643 | Label done, false_result; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2644 | Register object = ToRegister(instr->value()); |
| 2645 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2646 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2647 | // A Smi is not an instance of anything. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2648 | __ JumpIfSmi(object, &false_result, Label::kNear); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2649 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2650 | // This is the inlined call site instanceof cache. The two occurences of the |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2651 | // hole value will be patched to the last map/result pair generated by the |
| 2652 | // instanceof stub. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2653 | Label cache_miss; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2654 | Register map = ToRegister(instr->temp()); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2655 | __ mov(map, FieldOperand(object, HeapObject::kMapOffset)); |
| 2656 | __ bind(deferred->map_check()); // Label for calculating code patching. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2657 | Handle<Cell> cache_cell = factory()->NewCell(factory()->the_hole_value()); |
| 2658 | __ cmp(map, Operand::ForCell(cache_cell)); // Patched to cached map. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2659 | __ j(not_equal, &cache_miss, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2660 | __ mov(eax, factory()->the_hole_value()); // Patched to either true or false. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2661 | __ jmp(&done, Label::kNear); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2662 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2663 | // The inlined call site cache did not match. Check for null and string |
| 2664 | // before calling the deferred code. |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2665 | __ bind(&cache_miss); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2666 | // Null is not an instance of anything. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2667 | __ cmp(object, factory()->null_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2668 | __ j(equal, &false_result, Label::kNear); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2669 | |
| 2670 | // String values are not instances of anything. |
| 2671 | Condition is_string = masm_->IsObjectStringType(object, temp, temp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2672 | __ j(is_string, &false_result, Label::kNear); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2673 | |
| 2674 | // Go to the deferred code. |
| 2675 | __ jmp(deferred->entry()); |
| 2676 | |
| 2677 | __ bind(&false_result); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2678 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2679 | |
| 2680 | // Here result has either true or false. Deferred code also produces true or |
| 2681 | // false object. |
| 2682 | __ bind(deferred->exit()); |
| 2683 | __ bind(&done); |
| 2684 | } |
| 2685 | |
| 2686 | |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 2687 | void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr, |
| 2688 | Label* map_check) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2689 | PushSafepointRegistersScope scope(this); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2690 | |
| 2691 | InstanceofStub::Flags flags = InstanceofStub::kNoFlags; |
| 2692 | flags = static_cast<InstanceofStub::Flags>( |
| 2693 | flags | InstanceofStub::kArgsInRegisters); |
| 2694 | flags = static_cast<InstanceofStub::Flags>( |
| 2695 | flags | InstanceofStub::kCallSiteInlineCheck); |
| 2696 | flags = static_cast<InstanceofStub::Flags>( |
| 2697 | flags | InstanceofStub::kReturnTrueFalseObject); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2698 | InstanceofStub stub(isolate(), flags); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2699 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2700 | // Get the temp register reserved by the instruction. This needs to be a |
| 2701 | // register which is pushed last by PushSafepointRegisters as top of the |
| 2702 | // stack is used to pass the offset to the location of the map check to |
| 2703 | // the stub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2704 | Register temp = ToRegister(instr->temp()); |
| 2705 | DCHECK(MacroAssembler::SafepointRegisterStackIndex(temp) == 0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2706 | __ LoadHeapObject(InstanceofStub::right(), instr->function()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2707 | static const int kAdditionalDelta = 13; |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2708 | int delta = masm_->SizeOfCodeGeneratedSince(map_check) + kAdditionalDelta; |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2709 | __ mov(temp, Immediate(delta)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2710 | __ StoreToSafepointRegisterSlot(temp, temp); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2711 | CallCodeGeneric(stub.GetCode(), |
| 2712 | RelocInfo::CODE_TARGET, |
| 2713 | instr, |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2714 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2715 | // Get the deoptimization index of the LLazyBailout-environment that |
| 2716 | // corresponds to this instruction. |
| 2717 | LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment(); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 2718 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
| 2719 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2720 | // Put the result value into the eax slot and restore all registers. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 2721 | __ StoreToSafepointRegisterSlot(eax, eax); |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 2722 | } |
| 2723 | |
| 2724 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2725 | void LCodeGen::DoCmpT(LCmpT* instr) { |
| 2726 | Token::Value op = instr->op(); |
| 2727 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2728 | Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2729 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2730 | |
| 2731 | Condition condition = ComputeCompareCondition(op); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2732 | Label true_value, done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2733 | __ test(eax, Operand(eax)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2734 | __ j(condition, &true_value, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2735 | __ mov(ToRegister(instr->result()), factory()->false_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 2736 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2737 | __ bind(&true_value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2738 | __ mov(ToRegister(instr->result()), factory()->true_value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2739 | __ bind(&done); |
| 2740 | } |
| 2741 | |
| 2742 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2743 | void LCodeGen::EmitReturn(LReturn* instr, bool dynamic_frame_alignment) { |
| 2744 | int extra_value_count = dynamic_frame_alignment ? 2 : 1; |
| 2745 | |
| 2746 | if (instr->has_constant_parameter_count()) { |
| 2747 | int parameter_count = ToInteger32(instr->constant_parameter_count()); |
| 2748 | if (dynamic_frame_alignment && FLAG_debug_code) { |
| 2749 | __ cmp(Operand(esp, |
| 2750 | (parameter_count + extra_value_count) * kPointerSize), |
| 2751 | Immediate(kAlignmentZapValue)); |
| 2752 | __ Assert(equal, kExpectedAlignmentMarker); |
| 2753 | } |
| 2754 | __ Ret((parameter_count + extra_value_count) * kPointerSize, ecx); |
| 2755 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2756 | DCHECK(info()->IsStub()); // Functions would need to drop one more value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2757 | Register reg = ToRegister(instr->parameter_count()); |
| 2758 | // The argument count parameter is a smi |
| 2759 | __ SmiUntag(reg); |
| 2760 | Register return_addr_reg = reg.is(ecx) ? ebx : ecx; |
| 2761 | if (dynamic_frame_alignment && FLAG_debug_code) { |
| 2762 | DCHECK(extra_value_count == 2); |
| 2763 | __ cmp(Operand(esp, reg, times_pointer_size, |
| 2764 | extra_value_count * kPointerSize), |
| 2765 | Immediate(kAlignmentZapValue)); |
| 2766 | __ Assert(equal, kExpectedAlignmentMarker); |
| 2767 | } |
| 2768 | |
| 2769 | // emit code to restore stack based on instr->parameter_count() |
| 2770 | __ pop(return_addr_reg); // save return address |
| 2771 | if (dynamic_frame_alignment) { |
| 2772 | __ inc(reg); // 1 more for alignment |
| 2773 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2774 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2775 | __ shl(reg, kPointerSizeLog2); |
| 2776 | __ add(esp, reg); |
| 2777 | __ jmp(return_addr_reg); |
| 2778 | } |
| 2779 | } |
| 2780 | |
| 2781 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2782 | void LCodeGen::DoReturn(LReturn* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2783 | if (FLAG_trace && info()->IsOptimizing()) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2784 | // Preserve the return value on the stack and rely on the runtime call |
| 2785 | // to return the value in the same register. We're leaving the code |
| 2786 | // managed by the register allocator and tearing down the frame, it's |
| 2787 | // safe to write to the context register. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2788 | __ push(eax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2789 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2790 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 2791 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2792 | if (info()->saves_caller_doubles()) RestoreCallerDoubles(); |
| 2793 | if (dynamic_frame_alignment_) { |
| 2794 | // Fetch the state of the dynamic frame alignment. |
| 2795 | __ mov(edx, Operand(ebp, |
| 2796 | JavaScriptFrameConstants::kDynamicAlignmentStateOffset)); |
| 2797 | } |
| 2798 | int no_frame_start = -1; |
| 2799 | if (NeedsEagerFrame()) { |
| 2800 | __ mov(esp, ebp); |
| 2801 | __ pop(ebp); |
| 2802 | no_frame_start = masm_->pc_offset(); |
| 2803 | } |
| 2804 | if (dynamic_frame_alignment_) { |
| 2805 | Label no_padding; |
| 2806 | __ cmp(edx, Immediate(kNoAlignmentPadding)); |
| 2807 | __ j(equal, &no_padding, Label::kNear); |
| 2808 | |
| 2809 | EmitReturn(instr, true); |
| 2810 | __ bind(&no_padding); |
| 2811 | } |
| 2812 | |
| 2813 | EmitReturn(instr, false); |
| 2814 | if (no_frame_start != -1) { |
| 2815 | info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
| 2816 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2817 | } |
| 2818 | |
| 2819 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2820 | void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2821 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2822 | __ mov(result, Operand::ForCell(instr->hydrogen()->cell().handle())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2823 | if (instr->hydrogen()->RequiresHoleCheck()) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2824 | __ cmp(result, factory()->the_hole_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2825 | DeoptimizeIf(equal, instr, "hole"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2826 | } |
| 2827 | } |
| 2828 | |
| 2829 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2830 | template <class T> |
| 2831 | void LCodeGen::EmitVectorLoadICRegisters(T* instr) { |
| 2832 | DCHECK(FLAG_vector_ics); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2833 | Register vector_register = ToRegister(instr->temp_vector()); |
| 2834 | Register slot_register = VectorLoadICDescriptor::SlotRegister(); |
| 2835 | DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); |
| 2836 | DCHECK(slot_register.is(eax)); |
| 2837 | |
| 2838 | AllowDeferredHandleDereference vector_structure_check; |
| 2839 | Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); |
| 2840 | __ mov(vector_register, vector); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2841 | // No need to allocate this register. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2842 | FeedbackVectorICSlot slot = instr->hydrogen()->slot(); |
| 2843 | int index = vector->GetIndex(slot); |
| 2844 | __ mov(slot_register, Immediate(Smi::FromInt(index))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2845 | } |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2846 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2847 | |
| 2848 | void LCodeGen::DoLoadGlobalGeneric(LLoadGlobalGeneric* instr) { |
| 2849 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 2850 | DCHECK(ToRegister(instr->global_object()) |
| 2851 | .is(LoadDescriptor::ReceiverRegister())); |
| 2852 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 2853 | |
| 2854 | __ mov(LoadDescriptor::NameRegister(), instr->name()); |
| 2855 | if (FLAG_vector_ics) { |
| 2856 | EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); |
| 2857 | } |
| 2858 | ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2859 | Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode).code(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2860 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2861 | } |
| 2862 | |
| 2863 | |
| 2864 | void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2865 | Register value = ToRegister(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2866 | Handle<PropertyCell> cell_handle = instr->hydrogen()->cell().handle(); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2867 | |
| 2868 | // If the cell we are storing to contains the hole it could have |
| 2869 | // been deleted from the property dictionary. In that case, we need |
| 2870 | // to update the property details in the property dictionary to mark |
| 2871 | // it as no longer deleted. We deoptimize in that case. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2872 | if (instr->hydrogen()->RequiresHoleCheck()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2873 | __ cmp(Operand::ForCell(cell_handle), factory()->the_hole_value()); |
| 2874 | DeoptimizeIf(equal, instr, "hole"); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | // Store the value. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2878 | __ mov(Operand::ForCell(cell_handle), value); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2879 | // Cells are always rescanned, so no write barrier here. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2880 | } |
| 2881 | |
| 2882 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2883 | void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2884 | Register context = ToRegister(instr->context()); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2885 | Register result = ToRegister(instr->result()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2886 | __ mov(result, ContextOperand(context, instr->slot_index())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2887 | |
| 2888 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2889 | __ cmp(result, factory()->the_hole_value()); |
| 2890 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2891 | DeoptimizeIf(equal, instr, "hole"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2892 | } else { |
| 2893 | Label is_not_hole; |
| 2894 | __ j(not_equal, &is_not_hole, Label::kNear); |
| 2895 | __ mov(result, factory()->undefined_value()); |
| 2896 | __ bind(&is_not_hole); |
| 2897 | } |
| 2898 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2899 | } |
| 2900 | |
| 2901 | |
| 2902 | void LCodeGen::DoStoreContextSlot(LStoreContextSlot* instr) { |
| 2903 | Register context = ToRegister(instr->context()); |
| 2904 | Register value = ToRegister(instr->value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2905 | |
| 2906 | Label skip_assignment; |
| 2907 | |
| 2908 | Operand target = ContextOperand(context, instr->slot_index()); |
| 2909 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 2910 | __ cmp(target, factory()->the_hole_value()); |
| 2911 | if (instr->hydrogen()->DeoptimizesOnHole()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2912 | DeoptimizeIf(equal, instr, "hole"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2913 | } else { |
| 2914 | __ j(not_equal, &skip_assignment, Label::kNear); |
| 2915 | } |
| 2916 | } |
| 2917 | |
| 2918 | __ mov(target, value); |
| 2919 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2920 | SmiCheck check_needed = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2921 | instr->hydrogen()->value()->type().IsHeapObject() |
| 2922 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
| 2923 | Register temp = ToRegister(instr->temp()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2924 | int offset = Context::SlotOffset(instr->slot_index()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2925 | __ RecordWriteContextSlot(context, |
| 2926 | offset, |
| 2927 | value, |
| 2928 | temp, |
| 2929 | kSaveFPRegs, |
| 2930 | EMIT_REMEMBERED_SET, |
| 2931 | check_needed); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 2932 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2933 | |
| 2934 | __ bind(&skip_assignment); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 2935 | } |
| 2936 | |
| 2937 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2938 | void LCodeGen::DoLoadNamedField(LLoadNamedField* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2939 | HObjectAccess access = instr->hydrogen()->access(); |
| 2940 | int offset = access.offset(); |
| 2941 | |
| 2942 | if (access.IsExternalMemory()) { |
| 2943 | Register result = ToRegister(instr->result()); |
| 2944 | MemOperand operand = instr->object()->IsConstantOperand() |
| 2945 | ? MemOperand::StaticVariable(ToExternalReference( |
| 2946 | LConstantOperand::cast(instr->object()))) |
| 2947 | : MemOperand(ToRegister(instr->object()), offset); |
| 2948 | __ Load(result, operand, access.representation()); |
| 2949 | return; |
| 2950 | } |
| 2951 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2952 | Register object = ToRegister(instr->object()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2953 | if (instr->hydrogen()->representation().IsDouble()) { |
| 2954 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 2955 | __ movsd(result, FieldOperand(object, offset)); |
| 2956 | return; |
| 2957 | } |
| 2958 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2959 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2960 | if (!access.IsInobject()) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2961 | __ mov(result, FieldOperand(object, JSObject::kPropertiesOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2962 | object = result; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2963 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2964 | __ Load(result, FieldOperand(object, offset), access.representation()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2965 | } |
| 2966 | |
| 2967 | |
| 2968 | void LCodeGen::EmitPushTaggedOperand(LOperand* operand) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2969 | DCHECK(!operand->IsDoubleRegister()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2970 | if (operand->IsConstantOperand()) { |
| 2971 | Handle<Object> object = ToHandle(LConstantOperand::cast(operand)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2972 | AllowDeferredHandleDereference smi_check; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 2973 | if (object->IsSmi()) { |
| 2974 | __ Push(Handle<Smi>::cast(object)); |
| 2975 | } else { |
| 2976 | __ PushHeapObject(Handle<HeapObject>::cast(object)); |
| 2977 | } |
| 2978 | } else if (operand->IsRegister()) { |
| 2979 | __ push(ToRegister(operand)); |
| 2980 | } else { |
| 2981 | __ push(ToOperand(operand)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2982 | } |
| 2983 | } |
| 2984 | |
| 2985 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2986 | void LCodeGen::DoLoadNamedGeneric(LLoadNamedGeneric* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2987 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 2988 | DCHECK(ToRegister(instr->object()).is(LoadDescriptor::ReceiverRegister())); |
| 2989 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2990 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2991 | __ mov(LoadDescriptor::NameRegister(), instr->name()); |
| 2992 | if (FLAG_vector_ics) { |
| 2993 | EmitVectorLoadICRegisters<LLoadNamedGeneric>(instr); |
| 2994 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 2995 | Handle<Code> ic = |
| 2996 | CodeFactory::LoadICInOptimizedCode(isolate(), NOT_CONTEXTUAL).code(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 2997 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 2998 | } |
| 2999 | |
| 3000 | |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3001 | void LCodeGen::DoLoadFunctionPrototype(LLoadFunctionPrototype* instr) { |
| 3002 | Register function = ToRegister(instr->function()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3003 | Register temp = ToRegister(instr->temp()); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3004 | Register result = ToRegister(instr->result()); |
| 3005 | |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3006 | // Get the prototype or initial map from the function. |
| 3007 | __ mov(result, |
| 3008 | FieldOperand(function, JSFunction::kPrototypeOrInitialMapOffset)); |
| 3009 | |
| 3010 | // Check that the function has a prototype or an initial map. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3011 | __ cmp(Operand(result), Immediate(factory()->the_hole_value())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3012 | DeoptimizeIf(equal, instr, "hole"); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3013 | |
| 3014 | // If the function does not have an initial map, we're done. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3015 | Label done; |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3016 | __ CmpObjectType(result, MAP_TYPE, temp); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3017 | __ j(not_equal, &done, Label::kNear); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3018 | |
| 3019 | // Get the prototype from the initial map. |
| 3020 | __ mov(result, FieldOperand(result, Map::kPrototypeOffset)); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 3021 | |
| 3022 | // All done. |
| 3023 | __ bind(&done); |
| 3024 | } |
| 3025 | |
| 3026 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3027 | void LCodeGen::DoLoadRoot(LLoadRoot* instr) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3028 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3029 | __ LoadRoot(result, instr->index()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3030 | } |
| 3031 | |
| 3032 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3033 | void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) { |
| 3034 | Register arguments = ToRegister(instr->arguments()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3035 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3036 | if (instr->length()->IsConstantOperand() && |
| 3037 | instr->index()->IsConstantOperand()) { |
| 3038 | int const_index = ToInteger32(LConstantOperand::cast(instr->index())); |
| 3039 | int const_length = ToInteger32(LConstantOperand::cast(instr->length())); |
| 3040 | int index = (const_length - const_index) + 1; |
| 3041 | __ mov(result, Operand(arguments, index * kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3042 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3043 | Register length = ToRegister(instr->length()); |
| 3044 | Operand index = ToOperand(instr->index()); |
| 3045 | // There are two words between the frame pointer and the last argument. |
| 3046 | // Subtracting from length accounts for one of them add one more. |
| 3047 | __ sub(length, index); |
| 3048 | __ mov(result, Operand(arguments, length, times_4, kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3049 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3050 | } |
| 3051 | |
| 3052 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3053 | void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3054 | ElementsKind elements_kind = instr->elements_kind(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3055 | LOperand* key = instr->key(); |
| 3056 | if (!key->IsConstantOperand() && |
| 3057 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 3058 | elements_kind)) { |
| 3059 | __ SmiUntag(ToRegister(key)); |
| 3060 | } |
| 3061 | Operand operand(BuildFastArrayOperand( |
| 3062 | instr->elements(), |
| 3063 | key, |
| 3064 | instr->hydrogen()->key()->representation(), |
| 3065 | elements_kind, |
| 3066 | instr->base_offset())); |
| 3067 | if (elements_kind == EXTERNAL_FLOAT32_ELEMENTS || |
| 3068 | elements_kind == FLOAT32_ELEMENTS) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3069 | XMMRegister result(ToDoubleRegister(instr->result())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3070 | __ movss(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3071 | __ cvtss2sd(result, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3072 | } else if (elements_kind == EXTERNAL_FLOAT64_ELEMENTS || |
| 3073 | elements_kind == FLOAT64_ELEMENTS) { |
| 3074 | __ movsd(ToDoubleRegister(instr->result()), operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3075 | } else { |
| 3076 | Register result(ToRegister(instr->result())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3077 | switch (elements_kind) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3078 | case EXTERNAL_INT8_ELEMENTS: |
| 3079 | case INT8_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3080 | __ movsx_b(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3081 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3082 | case EXTERNAL_UINT8_CLAMPED_ELEMENTS: |
| 3083 | case EXTERNAL_UINT8_ELEMENTS: |
| 3084 | case UINT8_ELEMENTS: |
| 3085 | case UINT8_CLAMPED_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3086 | __ movzx_b(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3087 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3088 | case EXTERNAL_INT16_ELEMENTS: |
| 3089 | case INT16_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3090 | __ movsx_w(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3091 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3092 | case EXTERNAL_UINT16_ELEMENTS: |
| 3093 | case UINT16_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3094 | __ movzx_w(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3095 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3096 | case EXTERNAL_INT32_ELEMENTS: |
| 3097 | case INT32_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3098 | __ mov(result, operand); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3099 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3100 | case EXTERNAL_UINT32_ELEMENTS: |
| 3101 | case UINT32_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3102 | __ mov(result, operand); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3103 | if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) { |
| 3104 | __ test(result, Operand(result)); |
| 3105 | DeoptimizeIf(negative, instr, "negative value"); |
| 3106 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3107 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3108 | case EXTERNAL_FLOAT32_ELEMENTS: |
| 3109 | case EXTERNAL_FLOAT64_ELEMENTS: |
| 3110 | case FLOAT32_ELEMENTS: |
| 3111 | case FLOAT64_ELEMENTS: |
| 3112 | case FAST_SMI_ELEMENTS: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3113 | case FAST_ELEMENTS: |
| 3114 | case FAST_DOUBLE_ELEMENTS: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3115 | case FAST_HOLEY_SMI_ELEMENTS: |
| 3116 | case FAST_HOLEY_ELEMENTS: |
| 3117 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 3118 | case DICTIONARY_ELEMENTS: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3119 | case SLOPPY_ARGUMENTS_ELEMENTS: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3120 | UNREACHABLE(); |
| 3121 | break; |
| 3122 | } |
| 3123 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3124 | } |
| 3125 | |
| 3126 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3127 | void LCodeGen::DoLoadKeyedFixedDoubleArray(LLoadKeyed* instr) { |
| 3128 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3129 | Operand hole_check_operand = BuildFastArrayOperand( |
| 3130 | instr->elements(), instr->key(), |
| 3131 | instr->hydrogen()->key()->representation(), |
| 3132 | FAST_DOUBLE_ELEMENTS, |
| 3133 | instr->base_offset() + sizeof(kHoleNanLower32)); |
| 3134 | __ cmp(hole_check_operand, Immediate(kHoleNanUpper32)); |
| 3135 | DeoptimizeIf(equal, instr, "hole"); |
| 3136 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3137 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3138 | Operand double_load_operand = BuildFastArrayOperand( |
| 3139 | instr->elements(), |
| 3140 | instr->key(), |
| 3141 | instr->hydrogen()->key()->representation(), |
| 3142 | FAST_DOUBLE_ELEMENTS, |
| 3143 | instr->base_offset()); |
| 3144 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 3145 | __ movsd(result, double_load_operand); |
| 3146 | } |
| 3147 | |
| 3148 | |
| 3149 | void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) { |
| 3150 | Register result = ToRegister(instr->result()); |
| 3151 | |
| 3152 | // Load the result. |
| 3153 | __ mov(result, |
| 3154 | BuildFastArrayOperand(instr->elements(), instr->key(), |
| 3155 | instr->hydrogen()->key()->representation(), |
| 3156 | FAST_ELEMENTS, instr->base_offset())); |
| 3157 | |
| 3158 | // Check for the hole value. |
| 3159 | if (instr->hydrogen()->RequiresHoleCheck()) { |
| 3160 | if (IsFastSmiElementsKind(instr->hydrogen()->elements_kind())) { |
| 3161 | __ test(result, Immediate(kSmiTagMask)); |
| 3162 | DeoptimizeIf(not_equal, instr, "not a Smi"); |
| 3163 | } else { |
| 3164 | __ cmp(result, factory()->the_hole_value()); |
| 3165 | DeoptimizeIf(equal, instr, "hole"); |
| 3166 | } |
| 3167 | } |
| 3168 | } |
| 3169 | |
| 3170 | |
| 3171 | void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) { |
| 3172 | if (instr->is_typed_elements()) { |
| 3173 | DoLoadKeyedExternalArray(instr); |
| 3174 | } else if (instr->hydrogen()->representation().IsDouble()) { |
| 3175 | DoLoadKeyedFixedDoubleArray(instr); |
| 3176 | } else { |
| 3177 | DoLoadKeyedFixedArray(instr); |
| 3178 | } |
| 3179 | } |
| 3180 | |
| 3181 | |
| 3182 | Operand LCodeGen::BuildFastArrayOperand( |
| 3183 | LOperand* elements_pointer, |
| 3184 | LOperand* key, |
| 3185 | Representation key_representation, |
| 3186 | ElementsKind elements_kind, |
| 3187 | uint32_t base_offset) { |
| 3188 | Register elements_pointer_reg = ToRegister(elements_pointer); |
| 3189 | int element_shift_size = ElementsKindToShiftSize(elements_kind); |
| 3190 | int shift_size = element_shift_size; |
| 3191 | if (key->IsConstantOperand()) { |
| 3192 | int constant_value = ToInteger32(LConstantOperand::cast(key)); |
| 3193 | if (constant_value & 0xF0000000) { |
| 3194 | Abort(kArrayIndexConstantValueTooBig); |
| 3195 | } |
| 3196 | return Operand(elements_pointer_reg, |
| 3197 | ((constant_value) << shift_size) |
| 3198 | + base_offset); |
| 3199 | } else { |
| 3200 | // Take the tag bit into account while computing the shift size. |
| 3201 | if (key_representation.IsSmi() && (shift_size >= 1)) { |
| 3202 | shift_size -= kSmiTagSize; |
| 3203 | } |
| 3204 | ScaleFactor scale_factor = static_cast<ScaleFactor>(shift_size); |
| 3205 | return Operand(elements_pointer_reg, |
| 3206 | ToRegister(key), |
| 3207 | scale_factor, |
| 3208 | base_offset); |
| 3209 | } |
| 3210 | } |
| 3211 | |
| 3212 | |
| 3213 | void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) { |
| 3214 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 3215 | DCHECK(ToRegister(instr->object()).is(LoadDescriptor::ReceiverRegister())); |
| 3216 | DCHECK(ToRegister(instr->key()).is(LoadDescriptor::NameRegister())); |
| 3217 | |
| 3218 | if (FLAG_vector_ics) { |
| 3219 | EmitVectorLoadICRegisters<LLoadKeyedGeneric>(instr); |
| 3220 | } |
| 3221 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3222 | Handle<Code> ic = CodeFactory::KeyedLoadICInOptimizedCode(isolate()).code(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3223 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3224 | } |
| 3225 | |
| 3226 | |
| 3227 | void LCodeGen::DoArgumentsElements(LArgumentsElements* instr) { |
| 3228 | Register result = ToRegister(instr->result()); |
| 3229 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3230 | if (instr->hydrogen()->from_inlined()) { |
| 3231 | __ lea(result, Operand(esp, -2 * kPointerSize)); |
| 3232 | } else { |
| 3233 | // Check for arguments adapter frame. |
| 3234 | Label done, adapted; |
| 3235 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 3236 | __ mov(result, Operand(result, StandardFrameConstants::kContextOffset)); |
| 3237 | __ cmp(Operand(result), |
| 3238 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 3239 | __ j(equal, &adapted, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3240 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3241 | // No arguments adaptor frame. |
| 3242 | __ mov(result, Operand(ebp)); |
| 3243 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3244 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3245 | // Arguments adaptor frame present. |
| 3246 | __ bind(&adapted); |
| 3247 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3248 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3249 | // Result is the frame pointer for the frame if not adapted and for the real |
| 3250 | // frame below the adaptor frame if adapted. |
| 3251 | __ bind(&done); |
| 3252 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3253 | } |
| 3254 | |
| 3255 | |
| 3256 | void LCodeGen::DoArgumentsLength(LArgumentsLength* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3257 | Operand elem = ToOperand(instr->elements()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3258 | Register result = ToRegister(instr->result()); |
| 3259 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3260 | Label done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3261 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 3262 | // If no arguments adaptor frame the number of arguments is fixed. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3263 | __ cmp(ebp, elem); |
| 3264 | __ mov(result, Immediate(scope()->num_parameters())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3265 | __ j(equal, &done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3266 | |
| 3267 | // Arguments adaptor frame present. Get argument length from there. |
| 3268 | __ mov(result, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 3269 | __ mov(result, Operand(result, |
| 3270 | ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3271 | __ SmiUntag(result); |
| 3272 | |
Ben Murdoch | 086aeea | 2011-05-13 15:57:08 +0100 | [diff] [blame] | 3273 | // Argument length is in result register. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3274 | __ bind(&done); |
| 3275 | } |
| 3276 | |
| 3277 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3278 | void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3279 | Register receiver = ToRegister(instr->receiver()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3280 | Register function = ToRegister(instr->function()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3281 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3282 | // If the receiver is null or undefined, we have to pass the global |
| 3283 | // object as a receiver to normal functions. Values have to be |
| 3284 | // passed unchanged to builtins and strict-mode functions. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3285 | Label receiver_ok, global_object; |
| 3286 | Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear; |
| 3287 | Register scratch = ToRegister(instr->temp()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3288 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3289 | if (!instr->hydrogen()->known_function()) { |
| 3290 | // Do not transform the receiver to object for strict mode |
| 3291 | // functions. |
| 3292 | __ mov(scratch, |
| 3293 | FieldOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
| 3294 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kStrictModeByteOffset), |
| 3295 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 3296 | __ j(not_equal, &receiver_ok, dist); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3297 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3298 | // Do not transform the receiver to object for builtins. |
| 3299 | __ test_b(FieldOperand(scratch, SharedFunctionInfo::kNativeByteOffset), |
| 3300 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
| 3301 | __ j(not_equal, &receiver_ok, dist); |
| 3302 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3303 | |
| 3304 | // Normal function. Replace undefined or null with global receiver. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3305 | __ cmp(receiver, factory()->null_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3306 | __ j(equal, &global_object, Label::kNear); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3307 | __ cmp(receiver, factory()->undefined_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3308 | __ j(equal, &global_object, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3309 | |
| 3310 | // The receiver should be a JS object. |
| 3311 | __ test(receiver, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3312 | DeoptimizeIf(equal, instr, "Smi"); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3313 | __ CmpObjectType(receiver, FIRST_SPEC_OBJECT_TYPE, scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3314 | DeoptimizeIf(below, instr, "not a JavaScript object"); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3315 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3316 | __ jmp(&receiver_ok, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3317 | __ bind(&global_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3318 | __ mov(receiver, FieldOperand(function, JSFunction::kContextOffset)); |
| 3319 | const int global_offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX); |
| 3320 | __ mov(receiver, Operand(receiver, global_offset)); |
| 3321 | const int proxy_offset = GlobalObject::kGlobalProxyOffset; |
| 3322 | __ mov(receiver, FieldOperand(receiver, proxy_offset)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3323 | __ bind(&receiver_ok); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3324 | } |
| 3325 | |
| 3326 | |
| 3327 | void LCodeGen::DoApplyArguments(LApplyArguments* instr) { |
| 3328 | Register receiver = ToRegister(instr->receiver()); |
| 3329 | Register function = ToRegister(instr->function()); |
| 3330 | Register length = ToRegister(instr->length()); |
| 3331 | Register elements = ToRegister(instr->elements()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3332 | DCHECK(receiver.is(eax)); // Used for parameter count. |
| 3333 | DCHECK(function.is(edi)); // Required by InvokeFunction. |
| 3334 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3335 | |
| 3336 | // Copy the arguments to this function possibly from the |
| 3337 | // adaptor frame below it. |
| 3338 | const uint32_t kArgumentsLimit = 1 * KB; |
| 3339 | __ cmp(length, kArgumentsLimit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3340 | DeoptimizeIf(above, instr, "too many arguments"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3341 | |
| 3342 | __ push(receiver); |
| 3343 | __ mov(receiver, length); |
| 3344 | |
| 3345 | // Loop through the arguments pushing them onto the execution |
| 3346 | // stack. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3347 | Label invoke, loop; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3348 | // length is a small non-negative integer, due to the test above. |
| 3349 | __ test(length, Operand(length)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3350 | __ j(zero, &invoke, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3351 | __ bind(&loop); |
| 3352 | __ push(Operand(elements, length, times_pointer_size, 1 * kPointerSize)); |
| 3353 | __ dec(length); |
| 3354 | __ j(not_zero, &loop); |
| 3355 | |
| 3356 | // Invoke the function. |
| 3357 | __ bind(&invoke); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3358 | DCHECK(instr->HasPointerMap()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3359 | LPointerMap* pointers = instr->pointer_map(); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 3360 | SafepointGenerator safepoint_generator( |
| 3361 | this, pointers, Safepoint::kLazyDeopt); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3362 | ParameterCount actual(eax); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3363 | __ InvokeFunction(function, actual, CALL_FUNCTION, safepoint_generator); |
| 3364 | } |
| 3365 | |
| 3366 | |
| 3367 | void LCodeGen::DoDebugBreak(LDebugBreak* instr) { |
| 3368 | __ int3(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3369 | } |
| 3370 | |
| 3371 | |
| 3372 | void LCodeGen::DoPushArgument(LPushArgument* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3373 | LOperand* argument = instr->value(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3374 | EmitPushTaggedOperand(argument); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3375 | } |
| 3376 | |
| 3377 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3378 | void LCodeGen::DoDrop(LDrop* instr) { |
| 3379 | __ Drop(instr->count()); |
| 3380 | } |
| 3381 | |
| 3382 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3383 | void LCodeGen::DoThisFunction(LThisFunction* instr) { |
| 3384 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3385 | __ mov(result, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3386 | } |
| 3387 | |
| 3388 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3389 | void LCodeGen::DoContext(LContext* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3390 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3391 | if (info()->IsOptimizing()) { |
| 3392 | __ mov(result, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 3393 | } else { |
| 3394 | // If there is no frame, the context must be in esi. |
| 3395 | DCHECK(result.is(esi)); |
| 3396 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3397 | } |
| 3398 | |
| 3399 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3400 | void LCodeGen::DoDeclareGlobals(LDeclareGlobals* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3401 | DCHECK(ToRegister(instr->context()).is(esi)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3402 | __ push(esi); // The context is the first argument. |
| 3403 | __ push(Immediate(instr->hydrogen()->pairs())); |
| 3404 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->flags()))); |
| 3405 | CallRuntime(Runtime::kDeclareGlobals, 3, instr); |
| 3406 | } |
| 3407 | |
| 3408 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3409 | void LCodeGen::CallKnownFunction(Handle<JSFunction> function, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3410 | int formal_parameter_count, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3411 | int arity, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3412 | LInstruction* instr, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3413 | EDIState edi_state) { |
| 3414 | bool dont_adapt_arguments = |
| 3415 | formal_parameter_count == SharedFunctionInfo::kDontAdaptArgumentsSentinel; |
| 3416 | bool can_invoke_directly = |
| 3417 | dont_adapt_arguments || formal_parameter_count == arity; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3418 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3419 | if (can_invoke_directly) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3420 | if (edi_state == EDI_UNINITIALIZED) { |
| 3421 | __ LoadHeapObject(edi, function); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3422 | } |
| 3423 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3424 | // Change context. |
| 3425 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 3426 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3427 | // Set eax to arguments count if adaption is not needed. Assumes that eax |
| 3428 | // is available to write to at this point. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3429 | if (dont_adapt_arguments) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3430 | __ mov(eax, arity); |
| 3431 | } |
| 3432 | |
| 3433 | // Invoke function directly. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3434 | if (function.is_identical_to(info()->closure())) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3435 | __ CallSelf(); |
| 3436 | } else { |
| 3437 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 3438 | } |
| 3439 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3440 | } else { |
| 3441 | // We need to adapt arguments. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3442 | LPointerMap* pointers = instr->pointer_map(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3443 | SafepointGenerator generator( |
| 3444 | this, pointers, Safepoint::kLazyDeopt); |
| 3445 | ParameterCount count(arity); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3446 | ParameterCount expected(formal_parameter_count); |
| 3447 | __ InvokeFunction(function, expected, count, CALL_FUNCTION, generator); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3448 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3449 | } |
| 3450 | |
| 3451 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3452 | void LCodeGen::DoTailCallThroughMegamorphicCache( |
| 3453 | LTailCallThroughMegamorphicCache* instr) { |
| 3454 | Register receiver = ToRegister(instr->receiver()); |
| 3455 | Register name = ToRegister(instr->name()); |
| 3456 | DCHECK(receiver.is(LoadDescriptor::ReceiverRegister())); |
| 3457 | DCHECK(name.is(LoadDescriptor::NameRegister())); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3458 | Register slot = FLAG_vector_ics ? ToRegister(instr->slot()) : no_reg; |
| 3459 | Register vector = FLAG_vector_ics ? ToRegister(instr->vector()) : no_reg; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3460 | |
| 3461 | Register scratch = ebx; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3462 | Register extra = edi; |
| 3463 | DCHECK(!extra.is(slot) && !extra.is(vector)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3464 | DCHECK(!scratch.is(receiver) && !scratch.is(name)); |
| 3465 | DCHECK(!extra.is(receiver) && !extra.is(name)); |
| 3466 | |
| 3467 | // Important for the tail-call. |
| 3468 | bool must_teardown_frame = NeedsEagerFrame(); |
| 3469 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3470 | if (!instr->hydrogen()->is_just_miss()) { |
| 3471 | if (FLAG_vector_ics) { |
| 3472 | __ push(slot); |
| 3473 | __ push(vector); |
| 3474 | } |
| 3475 | |
| 3476 | // The probe will tail call to a handler if found. |
| 3477 | // If --vector-ics is on, then it knows to pop the two args first. |
| 3478 | DCHECK(!instr->hydrogen()->is_keyed_load()); |
| 3479 | isolate()->stub_cache()->GenerateProbe( |
| 3480 | masm(), Code::LOAD_IC, instr->hydrogen()->flags(), must_teardown_frame, |
| 3481 | receiver, name, scratch, extra); |
| 3482 | |
| 3483 | if (FLAG_vector_ics) { |
| 3484 | __ pop(vector); |
| 3485 | __ pop(slot); |
| 3486 | } |
| 3487 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3488 | |
| 3489 | // Tail call to miss if we ended up here. |
| 3490 | if (must_teardown_frame) __ leave(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3491 | if (instr->hydrogen()->is_keyed_load()) { |
| 3492 | KeyedLoadIC::GenerateMiss(masm()); |
| 3493 | } else { |
| 3494 | LoadIC::GenerateMiss(masm()); |
| 3495 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3496 | } |
| 3497 | |
| 3498 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3499 | void LCodeGen::DoCallWithDescriptor(LCallWithDescriptor* instr) { |
| 3500 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 3501 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3502 | if (instr->hydrogen()->IsTailCall()) { |
| 3503 | if (NeedsEagerFrame()) __ leave(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3504 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3505 | if (instr->target()->IsConstantOperand()) { |
| 3506 | LConstantOperand* target = LConstantOperand::cast(instr->target()); |
| 3507 | Handle<Code> code = Handle<Code>::cast(ToHandle(target)); |
| 3508 | __ jmp(code, RelocInfo::CODE_TARGET); |
| 3509 | } else { |
| 3510 | DCHECK(instr->target()->IsRegister()); |
| 3511 | Register target = ToRegister(instr->target()); |
| 3512 | __ add(target, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 3513 | __ jmp(target); |
| 3514 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3515 | } else { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3516 | LPointerMap* pointers = instr->pointer_map(); |
| 3517 | SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt); |
| 3518 | |
| 3519 | if (instr->target()->IsConstantOperand()) { |
| 3520 | LConstantOperand* target = LConstantOperand::cast(instr->target()); |
| 3521 | Handle<Code> code = Handle<Code>::cast(ToHandle(target)); |
| 3522 | generator.BeforeCall(__ CallSize(code, RelocInfo::CODE_TARGET)); |
| 3523 | __ call(code, RelocInfo::CODE_TARGET); |
| 3524 | } else { |
| 3525 | DCHECK(instr->target()->IsRegister()); |
| 3526 | Register target = ToRegister(instr->target()); |
| 3527 | generator.BeforeCall(__ CallSize(Operand(target))); |
| 3528 | __ add(target, Immediate(Code::kHeaderSize - kHeapObjectTag)); |
| 3529 | __ call(target); |
| 3530 | } |
| 3531 | generator.AfterCall(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3532 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3533 | } |
| 3534 | |
| 3535 | |
| 3536 | void LCodeGen::DoCallJSFunction(LCallJSFunction* instr) { |
| 3537 | DCHECK(ToRegister(instr->function()).is(edi)); |
| 3538 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 3539 | |
| 3540 | if (instr->hydrogen()->pass_argument_count()) { |
| 3541 | __ mov(eax, instr->arity()); |
| 3542 | } |
| 3543 | |
| 3544 | // Change context. |
| 3545 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 3546 | |
| 3547 | bool is_self_call = false; |
| 3548 | if (instr->hydrogen()->function()->IsConstant()) { |
| 3549 | HConstant* fun_const = HConstant::cast(instr->hydrogen()->function()); |
| 3550 | Handle<JSFunction> jsfun = |
| 3551 | Handle<JSFunction>::cast(fun_const->handle(isolate())); |
| 3552 | is_self_call = jsfun.is_identical_to(info()->closure()); |
| 3553 | } |
| 3554 | |
| 3555 | if (is_self_call) { |
| 3556 | __ CallSelf(); |
| 3557 | } else { |
| 3558 | __ call(FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
| 3559 | } |
| 3560 | |
| 3561 | RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT); |
| 3562 | } |
| 3563 | |
| 3564 | |
| 3565 | void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3566 | Register input_reg = ToRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3567 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3568 | factory()->heap_number_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3569 | DeoptimizeIf(not_equal, instr, "not a heap number"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3570 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3571 | Label slow, allocated, done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3572 | Register tmp = input_reg.is(eax) ? ecx : eax; |
| 3573 | Register tmp2 = tmp.is(ecx) ? edx : input_reg.is(ecx) ? edx : ecx; |
| 3574 | |
| 3575 | // Preserve the value of all registers. |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3576 | PushSafepointRegistersScope scope(this); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3577 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3578 | __ mov(tmp, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3579 | // Check the sign of the argument. If the argument is positive, just |
| 3580 | // return it. We do not need to patch the stack since |input| and |
| 3581 | // |result| are the same register and |input| will be restored |
| 3582 | // unchanged by popping safepoint registers. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3583 | __ test(tmp, Immediate(HeapNumber::kSignMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3584 | __ j(zero, &done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3585 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3586 | __ AllocateHeapNumber(tmp, tmp2, no_reg, &slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3587 | __ jmp(&allocated, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3588 | |
| 3589 | // Slow case: Call the runtime system to do the number allocation. |
| 3590 | __ bind(&slow); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3591 | CallRuntimeFromDeferred(Runtime::kAllocateHeapNumber, 0, |
| 3592 | instr, instr->context()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3593 | // Set the pointer to the new heap number in tmp. |
| 3594 | if (!tmp.is(eax)) __ mov(tmp, eax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3595 | // Restore input_reg after call to runtime. |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3596 | __ LoadFromSafepointRegisterSlot(input_reg, input_reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3597 | |
| 3598 | __ bind(&allocated); |
| 3599 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kExponentOffset)); |
| 3600 | __ and_(tmp2, ~HeapNumber::kSignMask); |
| 3601 | __ mov(FieldOperand(tmp, HeapNumber::kExponentOffset), tmp2); |
| 3602 | __ mov(tmp2, FieldOperand(input_reg, HeapNumber::kMantissaOffset)); |
| 3603 | __ mov(FieldOperand(tmp, HeapNumber::kMantissaOffset), tmp2); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 3604 | __ StoreToSafepointRegisterSlot(input_reg, tmp); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3605 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3606 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3607 | } |
| 3608 | |
| 3609 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3610 | void LCodeGen::EmitIntegerMathAbs(LMathAbs* instr) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3611 | Register input_reg = ToRegister(instr->value()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3612 | __ test(input_reg, Operand(input_reg)); |
| 3613 | Label is_positive; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3614 | __ j(not_sign, &is_positive, Label::kNear); |
| 3615 | __ neg(input_reg); // Sets flags. |
| 3616 | DeoptimizeIf(negative, instr, "overflow"); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3617 | __ bind(&is_positive); |
| 3618 | } |
| 3619 | |
| 3620 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3621 | void LCodeGen::DoMathAbs(LMathAbs* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3622 | // Class for deferred case. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3623 | class DeferredMathAbsTaggedHeapNumber FINAL : public LDeferredCode { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3624 | public: |
| 3625 | DeferredMathAbsTaggedHeapNumber(LCodeGen* codegen, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3626 | LMathAbs* instr) |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3627 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3628 | void Generate() OVERRIDE { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3629 | codegen()->DoDeferredMathAbsTaggedHeapNumber(instr_); |
| 3630 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 3631 | LInstruction* instr() OVERRIDE { return instr_; } |
| 3632 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3633 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3634 | LMathAbs* instr_; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3635 | }; |
| 3636 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3637 | DCHECK(instr->value()->Equals(instr->result())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3638 | Representation r = instr->hydrogen()->value()->representation(); |
| 3639 | |
| 3640 | if (r.IsDouble()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3641 | XMMRegister scratch = double_scratch0(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3642 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3643 | __ xorps(scratch, scratch); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3644 | __ subsd(scratch, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3645 | __ andps(input_reg, scratch); |
| 3646 | } else if (r.IsSmiOrInteger32()) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3647 | EmitIntegerMathAbs(instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3648 | } else { // Tagged case. |
| 3649 | DeferredMathAbsTaggedHeapNumber* deferred = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3650 | new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3651 | Register input_reg = ToRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3652 | // Smi check. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3653 | __ JumpIfNotSmi(input_reg, deferred->entry()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3654 | EmitIntegerMathAbs(instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3655 | __ bind(deferred->exit()); |
| 3656 | } |
| 3657 | } |
| 3658 | |
| 3659 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3660 | void LCodeGen::DoMathFloor(LMathFloor* instr) { |
| 3661 | XMMRegister xmm_scratch = double_scratch0(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3662 | Register output_reg = ToRegister(instr->result()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3663 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3664 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3665 | if (CpuFeatures::IsSupported(SSE4_1)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3666 | CpuFeatureScope scope(masm(), SSE4_1); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3667 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3668 | // Deoptimize on negative zero. |
| 3669 | Label non_zero; |
| 3670 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3671 | __ ucomisd(input_reg, xmm_scratch); |
| 3672 | __ j(not_equal, &non_zero, Label::kNear); |
| 3673 | __ movmskpd(output_reg, input_reg); |
| 3674 | __ test(output_reg, Immediate(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3675 | DeoptimizeIf(not_zero, instr, "minus zero"); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3676 | __ bind(&non_zero); |
| 3677 | } |
| 3678 | __ roundsd(xmm_scratch, input_reg, Assembler::kRoundDown); |
| 3679 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
| 3680 | // Overflow is signalled with minint. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3681 | __ cmp(output_reg, 0x1); |
| 3682 | DeoptimizeIf(overflow, instr, "overflow"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3683 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3684 | Label negative_sign, done; |
| 3685 | // Deoptimize on unordered. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3686 | __ xorps(xmm_scratch, xmm_scratch); // Zero the register. |
| 3687 | __ ucomisd(input_reg, xmm_scratch); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3688 | DeoptimizeIf(parity_even, instr, "NaN"); |
| 3689 | __ j(below, &negative_sign, Label::kNear); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3690 | |
| 3691 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3692 | // Check for negative zero. |
| 3693 | Label positive_sign; |
| 3694 | __ j(above, &positive_sign, Label::kNear); |
| 3695 | __ movmskpd(output_reg, input_reg); |
| 3696 | __ test(output_reg, Immediate(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3697 | DeoptimizeIf(not_zero, instr, "minus zero"); |
| 3698 | __ Move(output_reg, Immediate(0)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3699 | __ jmp(&done, Label::kNear); |
| 3700 | __ bind(&positive_sign); |
| 3701 | } |
| 3702 | |
| 3703 | // Use truncating instruction (OK because input is positive). |
| 3704 | __ cvttsd2si(output_reg, Operand(input_reg)); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3705 | // Overflow is signalled with minint. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3706 | __ cmp(output_reg, 0x1); |
| 3707 | DeoptimizeIf(overflow, instr, "overflow"); |
| 3708 | __ jmp(&done, Label::kNear); |
| 3709 | |
| 3710 | // Non-zero negative reaches here. |
| 3711 | __ bind(&negative_sign); |
| 3712 | // Truncate, then compare and compensate. |
| 3713 | __ cvttsd2si(output_reg, Operand(input_reg)); |
| 3714 | __ Cvtsi2sd(xmm_scratch, output_reg); |
| 3715 | __ ucomisd(input_reg, xmm_scratch); |
| 3716 | __ j(equal, &done, Label::kNear); |
| 3717 | __ sub(output_reg, Immediate(1)); |
| 3718 | DeoptimizeIf(overflow, instr, "overflow"); |
| 3719 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 3720 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3721 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3722 | } |
| 3723 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3724 | |
| 3725 | void LCodeGen::DoMathRound(LMathRound* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3726 | Register output_reg = ToRegister(instr->result()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3727 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3728 | XMMRegister xmm_scratch = double_scratch0(); |
| 3729 | XMMRegister input_temp = ToDoubleRegister(instr->temp()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3730 | ExternalReference one_half = ExternalReference::address_of_one_half(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3731 | ExternalReference minus_one_half = |
| 3732 | ExternalReference::address_of_minus_one_half(); |
| 3733 | |
| 3734 | Label done, round_to_zero, below_one_half, do_not_compensate; |
| 3735 | Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear; |
| 3736 | |
| 3737 | __ movsd(xmm_scratch, Operand::StaticVariable(one_half)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3738 | __ ucomisd(xmm_scratch, input_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3739 | __ j(above, &below_one_half, Label::kNear); |
| 3740 | |
| 3741 | // CVTTSD2SI rounds towards zero, since 0.5 <= x, we use floor(0.5 + x). |
Ben Murdoch | 692be65 | 2012-01-10 18:47:50 +0000 | [diff] [blame] | 3742 | __ addsd(xmm_scratch, input_reg); |
Ben Murdoch | 692be65 | 2012-01-10 18:47:50 +0000 | [diff] [blame] | 3743 | __ cvttsd2si(output_reg, Operand(xmm_scratch)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3744 | // Overflow is signalled with minint. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3745 | __ cmp(output_reg, 0x1); |
| 3746 | DeoptimizeIf(overflow, instr, "overflow"); |
| 3747 | __ jmp(&done, dist); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3748 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3749 | __ bind(&below_one_half); |
| 3750 | __ movsd(xmm_scratch, Operand::StaticVariable(minus_one_half)); |
| 3751 | __ ucomisd(xmm_scratch, input_reg); |
| 3752 | __ j(below_equal, &round_to_zero, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3753 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3754 | // CVTTSD2SI rounds towards zero, we use ceil(x - (-0.5)) and then |
| 3755 | // compare and compensate. |
| 3756 | __ movaps(input_temp, input_reg); // Do not alter input_reg. |
| 3757 | __ subsd(input_temp, xmm_scratch); |
| 3758 | __ cvttsd2si(output_reg, Operand(input_temp)); |
| 3759 | // Catch minint due to overflow, and to prevent overflow when compensating. |
| 3760 | __ cmp(output_reg, 0x1); |
| 3761 | DeoptimizeIf(overflow, instr, "overflow"); |
| 3762 | |
| 3763 | __ Cvtsi2sd(xmm_scratch, output_reg); |
| 3764 | __ ucomisd(xmm_scratch, input_temp); |
| 3765 | __ j(equal, &done, dist); |
| 3766 | __ sub(output_reg, Immediate(1)); |
| 3767 | // No overflow because we already ruled out minint. |
| 3768 | __ jmp(&done, dist); |
| 3769 | |
| 3770 | __ bind(&round_to_zero); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3771 | // We return 0 for the input range [+0, 0.5[, or [-0.5, 0.5[ if |
| 3772 | // we can ignore the difference between a result of -0 and +0. |
| 3773 | if (instr->hydrogen()->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 3774 | // If the sign is positive, we return +0. |
| 3775 | __ movmskpd(output_reg, input_reg); |
| 3776 | __ test(output_reg, Immediate(1)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3777 | DeoptimizeIf(not_zero, instr, "minus zero"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3778 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3779 | __ Move(output_reg, Immediate(0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3780 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3781 | } |
| 3782 | |
| 3783 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3784 | void LCodeGen::DoMathFround(LMathFround* instr) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3785 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3786 | XMMRegister output_reg = ToDoubleRegister(instr->result()); |
| 3787 | __ cvtsd2ss(output_reg, input_reg); |
| 3788 | __ cvtss2sd(output_reg, output_reg); |
| 3789 | } |
| 3790 | |
| 3791 | |
| 3792 | void LCodeGen::DoMathSqrt(LMathSqrt* instr) { |
| 3793 | Operand input = ToOperand(instr->value()); |
| 3794 | XMMRegister output = ToDoubleRegister(instr->result()); |
| 3795 | __ sqrtsd(output, input); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3796 | } |
| 3797 | |
| 3798 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3799 | void LCodeGen::DoMathPowHalf(LMathPowHalf* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3800 | XMMRegister xmm_scratch = double_scratch0(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3801 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3802 | Register scratch = ToRegister(instr->temp()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3803 | DCHECK(ToDoubleRegister(instr->result()).is(input_reg)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3804 | |
| 3805 | // Note that according to ECMA-262 15.8.2.13: |
| 3806 | // Math.pow(-Infinity, 0.5) == Infinity |
| 3807 | // Math.sqrt(-Infinity) == NaN |
| 3808 | Label done, sqrt; |
| 3809 | // Check base for -Infinity. According to IEEE-754, single-precision |
| 3810 | // -Infinity has the highest 9 bits set and the lowest 23 bits cleared. |
| 3811 | __ mov(scratch, 0xFF800000); |
| 3812 | __ movd(xmm_scratch, scratch); |
| 3813 | __ cvtss2sd(xmm_scratch, xmm_scratch); |
| 3814 | __ ucomisd(input_reg, xmm_scratch); |
| 3815 | // Comparing -Infinity with NaN results in "unordered", which sets the |
| 3816 | // zero flag as if both were equal. However, it also sets the carry flag. |
| 3817 | __ j(not_equal, &sqrt, Label::kNear); |
| 3818 | __ j(carry, &sqrt, Label::kNear); |
| 3819 | // If input is -Infinity, return Infinity. |
| 3820 | __ xorps(input_reg, input_reg); |
| 3821 | __ subsd(input_reg, xmm_scratch); |
| 3822 | __ jmp(&done, Label::kNear); |
| 3823 | |
| 3824 | // Square root. |
| 3825 | __ bind(&sqrt); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3826 | __ xorps(xmm_scratch, xmm_scratch); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 3827 | __ addsd(input_reg, xmm_scratch); // Convert -0 to +0. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3828 | __ sqrtsd(input_reg, input_reg); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3829 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3830 | } |
| 3831 | |
| 3832 | |
| 3833 | void LCodeGen::DoPower(LPower* instr) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3834 | Representation exponent_type = instr->hydrogen()->right()->representation(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3835 | // Having marked this as a call, we can use any registers. |
| 3836 | // Just make sure that the input/output registers are the expected ones. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3837 | Register tagged_exponent = MathPowTaggedDescriptor::exponent(); |
| 3838 | DCHECK(!instr->right()->IsDoubleRegister() || |
| 3839 | ToDoubleRegister(instr->right()).is(xmm1)); |
| 3840 | DCHECK(!instr->right()->IsRegister() || |
| 3841 | ToRegister(instr->right()).is(tagged_exponent)); |
| 3842 | DCHECK(ToDoubleRegister(instr->left()).is(xmm2)); |
| 3843 | DCHECK(ToDoubleRegister(instr->result()).is(xmm3)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 3844 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3845 | if (exponent_type.IsSmi()) { |
| 3846 | MathPowStub stub(isolate(), MathPowStub::TAGGED); |
| 3847 | __ CallStub(&stub); |
| 3848 | } else if (exponent_type.IsTagged()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3849 | Label no_deopt; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3850 | __ JumpIfSmi(tagged_exponent, &no_deopt); |
| 3851 | DCHECK(!ecx.is(tagged_exponent)); |
| 3852 | __ CmpObjectType(tagged_exponent, HEAP_NUMBER_TYPE, ecx); |
| 3853 | DeoptimizeIf(not_equal, instr, "not a heap number"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3854 | __ bind(&no_deopt); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3855 | MathPowStub stub(isolate(), MathPowStub::TAGGED); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3856 | __ CallStub(&stub); |
| 3857 | } else if (exponent_type.IsInteger32()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3858 | MathPowStub stub(isolate(), MathPowStub::INTEGER); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3859 | __ CallStub(&stub); |
| 3860 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3861 | DCHECK(exponent_type.IsDouble()); |
| 3862 | MathPowStub stub(isolate(), MathPowStub::DOUBLE); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3863 | __ CallStub(&stub); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3864 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3865 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3866 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3867 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3868 | void LCodeGen::DoMathLog(LMathLog* instr) { |
| 3869 | DCHECK(instr->value()->Equals(instr->result())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3870 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3871 | XMMRegister xmm_scratch = double_scratch0(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3872 | Label positive, done, zero; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3873 | __ xorps(xmm_scratch, xmm_scratch); |
| 3874 | __ ucomisd(input_reg, xmm_scratch); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3875 | __ j(above, &positive, Label::kNear); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3876 | __ j(not_carry, &zero, Label::kNear); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3877 | ExternalReference nan = |
| 3878 | ExternalReference::address_of_canonical_non_hole_nan(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3879 | __ movsd(input_reg, Operand::StaticVariable(nan)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3880 | __ jmp(&done, Label::kNear); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3881 | __ bind(&zero); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3882 | ExternalReference ninf = |
| 3883 | ExternalReference::address_of_negative_infinity(); |
| 3884 | __ movsd(input_reg, Operand::StaticVariable(ninf)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3885 | __ jmp(&done, Label::kNear); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3886 | __ bind(&positive); |
| 3887 | __ fldln2(); |
| 3888 | __ sub(Operand(esp), Immediate(kDoubleSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3889 | __ movsd(Operand(esp, 0), input_reg); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3890 | __ fld_d(Operand(esp, 0)); |
| 3891 | __ fyl2x(); |
| 3892 | __ fstp_d(Operand(esp, 0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3893 | __ movsd(input_reg, Operand(esp, 0)); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 3894 | __ add(Operand(esp), Immediate(kDoubleSize)); |
| 3895 | __ bind(&done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3896 | } |
| 3897 | |
| 3898 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3899 | void LCodeGen::DoMathClz32(LMathClz32* instr) { |
| 3900 | Register input = ToRegister(instr->value()); |
| 3901 | Register result = ToRegister(instr->result()); |
| 3902 | Label not_zero_input; |
| 3903 | __ bsr(result, input); |
| 3904 | |
| 3905 | __ j(not_zero, ¬_zero_input); |
| 3906 | __ Move(result, Immediate(63)); // 63^31 == 32 |
| 3907 | |
| 3908 | __ bind(¬_zero_input); |
| 3909 | __ xor_(result, Immediate(31)); // for x in [0..31], 31^x == 31-x. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3910 | } |
| 3911 | |
| 3912 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3913 | void LCodeGen::DoMathExp(LMathExp* instr) { |
| 3914 | XMMRegister input = ToDoubleRegister(instr->value()); |
| 3915 | XMMRegister result = ToDoubleRegister(instr->result()); |
| 3916 | XMMRegister temp0 = double_scratch0(); |
| 3917 | Register temp1 = ToRegister(instr->temp1()); |
| 3918 | Register temp2 = ToRegister(instr->temp2()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3919 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3920 | MathExpGenerator::EmitMathExp(masm(), input, result, temp0, temp1, temp2); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3921 | } |
| 3922 | |
| 3923 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3924 | void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3925 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 3926 | DCHECK(ToRegister(instr->function()).is(edi)); |
| 3927 | DCHECK(instr->HasPointerMap()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 3928 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3929 | Handle<JSFunction> known_function = instr->hydrogen()->known_function(); |
| 3930 | if (known_function.is_null()) { |
| 3931 | LPointerMap* pointers = instr->pointer_map(); |
| 3932 | SafepointGenerator generator( |
| 3933 | this, pointers, Safepoint::kLazyDeopt); |
| 3934 | ParameterCount count(instr->arity()); |
| 3935 | __ InvokeFunction(edi, count, CALL_FUNCTION, generator); |
| 3936 | } else { |
| 3937 | CallKnownFunction(known_function, |
| 3938 | instr->hydrogen()->formal_parameter_count(), |
| 3939 | instr->arity(), |
| 3940 | instr, |
| 3941 | EDI_CONTAINS_TARGET); |
| 3942 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3943 | } |
| 3944 | |
| 3945 | |
| 3946 | void LCodeGen::DoCallFunction(LCallFunction* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3947 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 3948 | DCHECK(ToRegister(instr->function()).is(edi)); |
| 3949 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3950 | |
| 3951 | int arity = instr->arity(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3952 | CallFunctionStub stub(isolate(), arity, instr->hydrogen()->function_flags()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 3953 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3954 | } |
| 3955 | |
| 3956 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3957 | void LCodeGen::DoCallNew(LCallNew* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3958 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 3959 | DCHECK(ToRegister(instr->constructor()).is(edi)); |
| 3960 | DCHECK(ToRegister(instr->result()).is(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3961 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3962 | // No cell in ebx for construct type feedback in optimized code |
| 3963 | __ mov(ebx, isolate()->factory()->undefined_value()); |
| 3964 | CallConstructStub stub(isolate(), NO_CALL_CONSTRUCTOR_FLAGS); |
| 3965 | __ Move(eax, Immediate(instr->arity())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 3966 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 3967 | } |
| 3968 | |
| 3969 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3970 | void LCodeGen::DoCallNewArray(LCallNewArray* instr) { |
| 3971 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 3972 | DCHECK(ToRegister(instr->constructor()).is(edi)); |
| 3973 | DCHECK(ToRegister(instr->result()).is(eax)); |
| 3974 | |
| 3975 | __ Move(eax, Immediate(instr->arity())); |
| 3976 | __ mov(ebx, isolate()->factory()->undefined_value()); |
| 3977 | ElementsKind kind = instr->hydrogen()->elements_kind(); |
| 3978 | AllocationSiteOverrideMode override_mode = |
| 3979 | (AllocationSite::GetMode(kind) == TRACK_ALLOCATION_SITE) |
| 3980 | ? DISABLE_ALLOCATION_SITES |
| 3981 | : DONT_OVERRIDE; |
| 3982 | |
| 3983 | if (instr->arity() == 0) { |
| 3984 | ArrayNoArgumentConstructorStub stub(isolate(), kind, override_mode); |
| 3985 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
| 3986 | } else if (instr->arity() == 1) { |
| 3987 | Label done; |
| 3988 | if (IsFastPackedElementsKind(kind)) { |
| 3989 | Label packed_case; |
| 3990 | // We might need a change here |
| 3991 | // look at the first argument |
| 3992 | __ mov(ecx, Operand(esp, 0)); |
| 3993 | __ test(ecx, ecx); |
| 3994 | __ j(zero, &packed_case, Label::kNear); |
| 3995 | |
| 3996 | ElementsKind holey_kind = GetHoleyElementsKind(kind); |
| 3997 | ArraySingleArgumentConstructorStub stub(isolate(), |
| 3998 | holey_kind, |
| 3999 | override_mode); |
| 4000 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
| 4001 | __ jmp(&done, Label::kNear); |
| 4002 | __ bind(&packed_case); |
| 4003 | } |
| 4004 | |
| 4005 | ArraySingleArgumentConstructorStub stub(isolate(), kind, override_mode); |
| 4006 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
| 4007 | __ bind(&done); |
| 4008 | } else { |
| 4009 | ArrayNArgumentsConstructorStub stub(isolate(), kind, override_mode); |
| 4010 | CallCode(stub.GetCode(), RelocInfo::CONSTRUCT_CALL, instr); |
| 4011 | } |
| 4012 | } |
| 4013 | |
| 4014 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4015 | void LCodeGen::DoCallRuntime(LCallRuntime* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4016 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 4017 | CallRuntime(instr->function(), instr->arity(), instr, instr->save_doubles()); |
| 4018 | } |
| 4019 | |
| 4020 | |
| 4021 | void LCodeGen::DoStoreCodeEntry(LStoreCodeEntry* instr) { |
| 4022 | Register function = ToRegister(instr->function()); |
| 4023 | Register code_object = ToRegister(instr->code_object()); |
| 4024 | __ lea(code_object, FieldOperand(code_object, Code::kHeaderSize)); |
| 4025 | __ mov(FieldOperand(function, JSFunction::kCodeEntryOffset), code_object); |
| 4026 | } |
| 4027 | |
| 4028 | |
| 4029 | void LCodeGen::DoInnerAllocatedObject(LInnerAllocatedObject* instr) { |
| 4030 | Register result = ToRegister(instr->result()); |
| 4031 | Register base = ToRegister(instr->base_object()); |
| 4032 | if (instr->offset()->IsConstantOperand()) { |
| 4033 | LConstantOperand* offset = LConstantOperand::cast(instr->offset()); |
| 4034 | __ lea(result, Operand(base, ToInteger32(offset))); |
| 4035 | } else { |
| 4036 | Register offset = ToRegister(instr->offset()); |
| 4037 | __ lea(result, Operand(base, offset, times_1, 0)); |
| 4038 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4039 | } |
| 4040 | |
| 4041 | |
| 4042 | void LCodeGen::DoStoreNamedField(LStoreNamedField* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4043 | Representation representation = instr->hydrogen()->field_representation(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4044 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4045 | HObjectAccess access = instr->hydrogen()->access(); |
| 4046 | int offset = access.offset(); |
| 4047 | |
| 4048 | if (access.IsExternalMemory()) { |
| 4049 | DCHECK(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4050 | MemOperand operand = instr->object()->IsConstantOperand() |
| 4051 | ? MemOperand::StaticVariable( |
| 4052 | ToExternalReference(LConstantOperand::cast(instr->object()))) |
| 4053 | : MemOperand(ToRegister(instr->object()), offset); |
| 4054 | if (instr->value()->IsConstantOperand()) { |
| 4055 | LConstantOperand* operand_value = LConstantOperand::cast(instr->value()); |
| 4056 | __ mov(operand, Immediate(ToInteger32(operand_value))); |
| 4057 | } else { |
| 4058 | Register value = ToRegister(instr->value()); |
| 4059 | __ Store(value, operand, representation); |
| 4060 | } |
| 4061 | return; |
| 4062 | } |
| 4063 | |
| 4064 | Register object = ToRegister(instr->object()); |
| 4065 | __ AssertNotSmi(object); |
| 4066 | |
| 4067 | DCHECK(!representation.IsSmi() || |
| 4068 | !instr->value()->IsConstantOperand() || |
| 4069 | IsSmi(LConstantOperand::cast(instr->value()))); |
| 4070 | if (representation.IsDouble()) { |
| 4071 | DCHECK(access.IsInobject()); |
| 4072 | DCHECK(!instr->hydrogen()->has_transition()); |
| 4073 | DCHECK(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4074 | XMMRegister value = ToDoubleRegister(instr->value()); |
| 4075 | __ movsd(FieldOperand(object, offset), value); |
| 4076 | return; |
| 4077 | } |
| 4078 | |
| 4079 | if (instr->hydrogen()->has_transition()) { |
| 4080 | Handle<Map> transition = instr->hydrogen()->transition_map(); |
| 4081 | AddDeprecationDependency(transition); |
| 4082 | __ mov(FieldOperand(object, HeapObject::kMapOffset), transition); |
| 4083 | if (instr->hydrogen()->NeedsWriteBarrierForMap()) { |
| 4084 | Register temp = ToRegister(instr->temp()); |
| 4085 | Register temp_map = ToRegister(instr->temp_map()); |
| 4086 | // Update the write barrier for the map field. |
| 4087 | __ RecordWriteForMap(object, transition, temp_map, temp, kSaveFPRegs); |
| 4088 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4089 | } |
| 4090 | |
| 4091 | // Do the store. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4092 | Register write_register = object; |
| 4093 | if (!access.IsInobject()) { |
| 4094 | write_register = ToRegister(instr->temp()); |
| 4095 | __ mov(write_register, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 4096 | } |
| 4097 | |
| 4098 | MemOperand operand = FieldOperand(write_register, offset); |
| 4099 | if (instr->value()->IsConstantOperand()) { |
| 4100 | LConstantOperand* operand_value = LConstantOperand::cast(instr->value()); |
| 4101 | if (operand_value->IsRegister()) { |
| 4102 | Register value = ToRegister(operand_value); |
| 4103 | __ Store(value, operand, representation); |
| 4104 | } else if (representation.IsInteger32()) { |
| 4105 | Immediate immediate = ToImmediate(operand_value, representation); |
| 4106 | DCHECK(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4107 | __ mov(operand, immediate); |
| 4108 | } else { |
| 4109 | Handle<Object> handle_value = ToHandle(operand_value); |
| 4110 | DCHECK(!instr->hydrogen()->NeedsWriteBarrier()); |
| 4111 | __ mov(operand, handle_value); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4112 | } |
| 4113 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4114 | Register value = ToRegister(instr->value()); |
| 4115 | __ Store(value, operand, representation); |
| 4116 | } |
| 4117 | |
| 4118 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
| 4119 | Register value = ToRegister(instr->value()); |
| 4120 | Register temp = access.IsInobject() ? ToRegister(instr->temp()) : object; |
| 4121 | // Update the write barrier for the object for in-object properties. |
| 4122 | __ RecordWriteField(write_register, |
| 4123 | offset, |
| 4124 | value, |
| 4125 | temp, |
| 4126 | kSaveFPRegs, |
| 4127 | EMIT_REMEMBERED_SET, |
| 4128 | instr->hydrogen()->SmiCheckForWriteBarrier(), |
| 4129 | instr->hydrogen()->PointersToHereCheckForValue()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4130 | } |
| 4131 | } |
| 4132 | |
| 4133 | |
| 4134 | void LCodeGen::DoStoreNamedGeneric(LStoreNamedGeneric* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4135 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 4136 | DCHECK(ToRegister(instr->object()).is(StoreDescriptor::ReceiverRegister())); |
| 4137 | DCHECK(ToRegister(instr->value()).is(StoreDescriptor::ValueRegister())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4138 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4139 | __ mov(StoreDescriptor::NameRegister(), instr->name()); |
| 4140 | Handle<Code> ic = StoreIC::initialize_stub(isolate(), instr->strict_mode()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4141 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4142 | } |
| 4143 | |
| 4144 | |
| 4145 | void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4146 | Condition cc = instr->hydrogen()->allow_equality() ? above : above_equal; |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4147 | if (instr->index()->IsConstantOperand()) { |
| 4148 | __ cmp(ToOperand(instr->length()), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4149 | ToImmediate(LConstantOperand::cast(instr->index()), |
| 4150 | instr->hydrogen()->length()->representation())); |
| 4151 | cc = CommuteCondition(cc); |
| 4152 | } else if (instr->length()->IsConstantOperand()) { |
| 4153 | __ cmp(ToOperand(instr->index()), |
| 4154 | ToImmediate(LConstantOperand::cast(instr->length()), |
| 4155 | instr->hydrogen()->index()->representation())); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4156 | } else { |
| 4157 | __ cmp(ToRegister(instr->index()), ToOperand(instr->length())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4158 | } |
| 4159 | if (FLAG_debug_code && instr->hydrogen()->skip_check()) { |
| 4160 | Label done; |
| 4161 | __ j(NegateCondition(cc), &done, Label::kNear); |
| 4162 | __ int3(); |
| 4163 | __ bind(&done); |
| 4164 | } else { |
| 4165 | DeoptimizeIf(cc, instr, "out of bounds"); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 4166 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4167 | } |
| 4168 | |
| 4169 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4170 | void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) { |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4171 | ElementsKind elements_kind = instr->elements_kind(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4172 | LOperand* key = instr->key(); |
| 4173 | if (!key->IsConstantOperand() && |
| 4174 | ExternalArrayOpRequiresTemp(instr->hydrogen()->key()->representation(), |
| 4175 | elements_kind)) { |
| 4176 | __ SmiUntag(ToRegister(key)); |
| 4177 | } |
| 4178 | Operand operand(BuildFastArrayOperand( |
| 4179 | instr->elements(), |
| 4180 | key, |
| 4181 | instr->hydrogen()->key()->representation(), |
| 4182 | elements_kind, |
| 4183 | instr->base_offset())); |
| 4184 | if (elements_kind == EXTERNAL_FLOAT32_ELEMENTS || |
| 4185 | elements_kind == FLOAT32_ELEMENTS) { |
| 4186 | XMMRegister xmm_scratch = double_scratch0(); |
| 4187 | __ cvtsd2ss(xmm_scratch, ToDoubleRegister(instr->value())); |
| 4188 | __ movss(operand, xmm_scratch); |
| 4189 | } else if (elements_kind == EXTERNAL_FLOAT64_ELEMENTS || |
| 4190 | elements_kind == FLOAT64_ELEMENTS) { |
| 4191 | __ movsd(operand, ToDoubleRegister(instr->value())); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4192 | } else { |
| 4193 | Register value = ToRegister(instr->value()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4194 | switch (elements_kind) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4195 | case EXTERNAL_UINT8_CLAMPED_ELEMENTS: |
| 4196 | case EXTERNAL_UINT8_ELEMENTS: |
| 4197 | case EXTERNAL_INT8_ELEMENTS: |
| 4198 | case UINT8_ELEMENTS: |
| 4199 | case INT8_ELEMENTS: |
| 4200 | case UINT8_CLAMPED_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4201 | __ mov_b(operand, value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4202 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4203 | case EXTERNAL_INT16_ELEMENTS: |
| 4204 | case EXTERNAL_UINT16_ELEMENTS: |
| 4205 | case UINT16_ELEMENTS: |
| 4206 | case INT16_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4207 | __ mov_w(operand, value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4208 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4209 | case EXTERNAL_INT32_ELEMENTS: |
| 4210 | case EXTERNAL_UINT32_ELEMENTS: |
| 4211 | case UINT32_ELEMENTS: |
| 4212 | case INT32_ELEMENTS: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4213 | __ mov(operand, value); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4214 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4215 | case EXTERNAL_FLOAT32_ELEMENTS: |
| 4216 | case EXTERNAL_FLOAT64_ELEMENTS: |
| 4217 | case FLOAT32_ELEMENTS: |
| 4218 | case FLOAT64_ELEMENTS: |
| 4219 | case FAST_SMI_ELEMENTS: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4220 | case FAST_ELEMENTS: |
| 4221 | case FAST_DOUBLE_ELEMENTS: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4222 | case FAST_HOLEY_SMI_ELEMENTS: |
| 4223 | case FAST_HOLEY_ELEMENTS: |
| 4224 | case FAST_HOLEY_DOUBLE_ELEMENTS: |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 4225 | case DICTIONARY_ELEMENTS: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4226 | case SLOPPY_ARGUMENTS_ELEMENTS: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4227 | UNREACHABLE(); |
| 4228 | break; |
| 4229 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4230 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4231 | } |
| 4232 | |
| 4233 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4234 | void LCodeGen::DoStoreKeyedFixedDoubleArray(LStoreKeyed* instr) { |
| 4235 | ExternalReference canonical_nan_reference = |
| 4236 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 4237 | Operand double_store_operand = BuildFastArrayOperand( |
| 4238 | instr->elements(), |
| 4239 | instr->key(), |
| 4240 | instr->hydrogen()->key()->representation(), |
| 4241 | FAST_DOUBLE_ELEMENTS, |
| 4242 | instr->base_offset()); |
| 4243 | |
| 4244 | XMMRegister value = ToDoubleRegister(instr->value()); |
| 4245 | |
| 4246 | if (instr->NeedsCanonicalization()) { |
| 4247 | Label have_value; |
| 4248 | |
| 4249 | __ ucomisd(value, value); |
| 4250 | __ j(parity_odd, &have_value, Label::kNear); // NaN. |
| 4251 | |
| 4252 | __ movsd(value, Operand::StaticVariable(canonical_nan_reference)); |
| 4253 | __ bind(&have_value); |
| 4254 | } |
| 4255 | |
| 4256 | __ movsd(double_store_operand, value); |
| 4257 | } |
| 4258 | |
| 4259 | |
| 4260 | void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) { |
| 4261 | Register elements = ToRegister(instr->elements()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4262 | Register key = instr->key()->IsRegister() ? ToRegister(instr->key()) : no_reg; |
| 4263 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4264 | Operand operand = BuildFastArrayOperand( |
| 4265 | instr->elements(), |
| 4266 | instr->key(), |
| 4267 | instr->hydrogen()->key()->representation(), |
| 4268 | FAST_ELEMENTS, |
| 4269 | instr->base_offset()); |
| 4270 | if (instr->value()->IsRegister()) { |
| 4271 | __ mov(operand, ToRegister(instr->value())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4272 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4273 | LConstantOperand* operand_value = LConstantOperand::cast(instr->value()); |
| 4274 | if (IsSmi(operand_value)) { |
| 4275 | Immediate immediate = ToImmediate(operand_value, Representation::Smi()); |
| 4276 | __ mov(operand, immediate); |
| 4277 | } else { |
| 4278 | DCHECK(!IsInteger32(operand_value)); |
| 4279 | Handle<Object> handle_value = ToHandle(operand_value); |
| 4280 | __ mov(operand, handle_value); |
| 4281 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4282 | } |
| 4283 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4284 | if (instr->hydrogen()->NeedsWriteBarrier()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4285 | DCHECK(instr->value()->IsRegister()); |
| 4286 | Register value = ToRegister(instr->value()); |
| 4287 | DCHECK(!instr->key()->IsConstantOperand()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4288 | SmiCheck check_needed = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4289 | instr->hydrogen()->value()->type().IsHeapObject() |
| 4290 | ? OMIT_SMI_CHECK : INLINE_SMI_CHECK; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4291 | // Compute address of modified element and store it into key register. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4292 | __ lea(key, operand); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4293 | __ RecordWrite(elements, |
| 4294 | key, |
| 4295 | value, |
| 4296 | kSaveFPRegs, |
| 4297 | EMIT_REMEMBERED_SET, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4298 | check_needed, |
| 4299 | instr->hydrogen()->PointersToHereCheckForValue()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4300 | } |
| 4301 | } |
| 4302 | |
| 4303 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4304 | void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) { |
| 4305 | // By cases...external, fast-double, fast |
| 4306 | if (instr->is_typed_elements()) { |
| 4307 | DoStoreKeyedExternalArray(instr); |
| 4308 | } else if (instr->hydrogen()->value()->representation().IsDouble()) { |
| 4309 | DoStoreKeyedFixedDoubleArray(instr); |
| 4310 | } else { |
| 4311 | DoStoreKeyedFixedArray(instr); |
| 4312 | } |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4313 | } |
| 4314 | |
| 4315 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4316 | void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4317 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 4318 | DCHECK(ToRegister(instr->object()).is(StoreDescriptor::ReceiverRegister())); |
| 4319 | DCHECK(ToRegister(instr->key()).is(StoreDescriptor::NameRegister())); |
| 4320 | DCHECK(ToRegister(instr->value()).is(StoreDescriptor::ValueRegister())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4321 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4322 | Handle<Code> ic = |
| 4323 | CodeFactory::KeyedStoreIC(isolate(), instr->strict_mode()).code(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4324 | CallCode(ic, RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4325 | } |
| 4326 | |
| 4327 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4328 | void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { |
| 4329 | Register object = ToRegister(instr->object()); |
| 4330 | Register temp = ToRegister(instr->temp()); |
| 4331 | Label no_memento_found; |
| 4332 | __ TestJSArrayForAllocationMemento(object, temp, &no_memento_found); |
| 4333 | DeoptimizeIf(equal, instr, "memento found"); |
| 4334 | __ bind(&no_memento_found); |
| 4335 | } |
| 4336 | |
| 4337 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4338 | void LCodeGen::DoTransitionElementsKind(LTransitionElementsKind* instr) { |
| 4339 | Register object_reg = ToRegister(instr->object()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4340 | |
| 4341 | Handle<Map> from_map = instr->original_map(); |
| 4342 | Handle<Map> to_map = instr->transitioned_map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4343 | ElementsKind from_kind = instr->from_kind(); |
| 4344 | ElementsKind to_kind = instr->to_kind(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4345 | |
| 4346 | Label not_applicable; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4347 | bool is_simple_map_transition = |
| 4348 | IsSimpleMapChangeTransition(from_kind, to_kind); |
| 4349 | Label::Distance branch_distance = |
| 4350 | is_simple_map_transition ? Label::kNear : Label::kFar; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4351 | __ cmp(FieldOperand(object_reg, HeapObject::kMapOffset), from_map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4352 | __ j(not_equal, ¬_applicable, branch_distance); |
| 4353 | if (is_simple_map_transition) { |
| 4354 | Register new_map_reg = ToRegister(instr->new_map_temp()); |
| 4355 | __ mov(FieldOperand(object_reg, HeapObject::kMapOffset), |
| 4356 | Immediate(to_map)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4357 | // Write barrier. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4358 | DCHECK_NE(instr->temp(), NULL); |
| 4359 | __ RecordWriteForMap(object_reg, to_map, new_map_reg, |
| 4360 | ToRegister(instr->temp()), |
| 4361 | kDontSaveFPRegs); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4362 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4363 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 4364 | DCHECK(object_reg.is(eax)); |
| 4365 | PushSafepointRegistersScope scope(this); |
| 4366 | __ mov(ebx, to_map); |
| 4367 | bool is_js_array = from_map->instance_type() == JS_ARRAY_TYPE; |
| 4368 | TransitionElementsKindStub stub(isolate(), from_kind, to_kind, is_js_array); |
| 4369 | __ CallStub(&stub); |
| 4370 | RecordSafepointWithLazyDeopt(instr, |
| 4371 | RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4372 | } |
| 4373 | __ bind(¬_applicable); |
| 4374 | } |
| 4375 | |
| 4376 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4377 | void LCodeGen::DoStringCharCodeAt(LStringCharCodeAt* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4378 | class DeferredStringCharCodeAt FINAL : public LDeferredCode { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4379 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4380 | DeferredStringCharCodeAt(LCodeGen* codegen, |
| 4381 | LStringCharCodeAt* instr) |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4382 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4383 | void Generate() OVERRIDE { codegen()->DoDeferredStringCharCodeAt(instr_); } |
| 4384 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4385 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4386 | private: |
| 4387 | LStringCharCodeAt* instr_; |
| 4388 | }; |
| 4389 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4390 | DeferredStringCharCodeAt* deferred = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4391 | new(zone()) DeferredStringCharCodeAt(this, instr); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4392 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4393 | StringCharLoadGenerator::Generate(masm(), |
| 4394 | factory(), |
| 4395 | ToRegister(instr->string()), |
| 4396 | ToRegister(instr->index()), |
| 4397 | ToRegister(instr->result()), |
| 4398 | deferred->entry()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4399 | __ bind(deferred->exit()); |
| 4400 | } |
| 4401 | |
| 4402 | |
| 4403 | void LCodeGen::DoDeferredStringCharCodeAt(LStringCharCodeAt* instr) { |
| 4404 | Register string = ToRegister(instr->string()); |
| 4405 | Register result = ToRegister(instr->result()); |
| 4406 | |
| 4407 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4408 | // result register contain a valid pointer because it is already |
| 4409 | // contained in the register pointer map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4410 | __ Move(result, Immediate(0)); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4411 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 4412 | PushSafepointRegistersScope scope(this); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4413 | __ push(string); |
| 4414 | // Push the index as a smi. This is safe because of the checks in |
| 4415 | // DoStringCharCodeAt above. |
| 4416 | STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue); |
| 4417 | if (instr->index()->IsConstantOperand()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4418 | Immediate immediate = ToImmediate(LConstantOperand::cast(instr->index()), |
| 4419 | Representation::Smi()); |
| 4420 | __ push(immediate); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4421 | } else { |
| 4422 | Register index = ToRegister(instr->index()); |
| 4423 | __ SmiTag(index); |
| 4424 | __ push(index); |
| 4425 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4426 | CallRuntimeFromDeferred(Runtime::kStringCharCodeAtRT, 2, |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4427 | instr, instr->context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4428 | __ AssertSmi(eax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4429 | __ SmiUntag(eax); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4430 | __ StoreToSafepointRegisterSlot(result, eax); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4431 | } |
| 4432 | |
| 4433 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4434 | void LCodeGen::DoStringCharFromCode(LStringCharFromCode* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4435 | class DeferredStringCharFromCode FINAL : public LDeferredCode { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4436 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4437 | DeferredStringCharFromCode(LCodeGen* codegen, |
| 4438 | LStringCharFromCode* instr) |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4439 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4440 | void Generate() OVERRIDE { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4441 | codegen()->DoDeferredStringCharFromCode(instr_); |
| 4442 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4443 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4444 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4445 | private: |
| 4446 | LStringCharFromCode* instr_; |
| 4447 | }; |
| 4448 | |
| 4449 | DeferredStringCharFromCode* deferred = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4450 | new(zone()) DeferredStringCharFromCode(this, instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4451 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4452 | DCHECK(instr->hydrogen()->value()->representation().IsInteger32()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4453 | Register char_code = ToRegister(instr->char_code()); |
| 4454 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4455 | DCHECK(!char_code.is(result)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4456 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4457 | __ cmp(char_code, String::kMaxOneByteCharCode); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4458 | __ j(above, deferred->entry()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4459 | __ Move(result, Immediate(factory()->single_character_string_cache())); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4460 | __ mov(result, FieldOperand(result, |
| 4461 | char_code, times_pointer_size, |
| 4462 | FixedArray::kHeaderSize)); |
| 4463 | __ cmp(result, factory()->undefined_value()); |
| 4464 | __ j(equal, deferred->entry()); |
| 4465 | __ bind(deferred->exit()); |
| 4466 | } |
| 4467 | |
| 4468 | |
| 4469 | void LCodeGen::DoDeferredStringCharFromCode(LStringCharFromCode* instr) { |
| 4470 | Register char_code = ToRegister(instr->char_code()); |
| 4471 | Register result = ToRegister(instr->result()); |
| 4472 | |
| 4473 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4474 | // result register contain a valid pointer because it is already |
| 4475 | // contained in the register pointer map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4476 | __ Move(result, Immediate(0)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4477 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 4478 | PushSafepointRegistersScope scope(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4479 | __ SmiTag(char_code); |
| 4480 | __ push(char_code); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4481 | CallRuntimeFromDeferred(Runtime::kCharFromCode, 1, instr, instr->context()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4482 | __ StoreToSafepointRegisterSlot(result, eax); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4483 | } |
| 4484 | |
| 4485 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4486 | void LCodeGen::DoStringAdd(LStringAdd* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4487 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 4488 | DCHECK(ToRegister(instr->left()).is(edx)); |
| 4489 | DCHECK(ToRegister(instr->right()).is(eax)); |
| 4490 | StringAddStub stub(isolate(), |
| 4491 | instr->hydrogen()->flags(), |
| 4492 | instr->hydrogen()->pretenure_flag()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4493 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4494 | } |
| 4495 | |
| 4496 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4497 | void LCodeGen::DoInteger32ToDouble(LInteger32ToDouble* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4498 | LOperand* input = instr->value(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4499 | LOperand* output = instr->result(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4500 | DCHECK(input->IsRegister() || input->IsStackSlot()); |
| 4501 | DCHECK(output->IsDoubleRegister()); |
| 4502 | __ Cvtsi2sd(ToDoubleRegister(output), ToOperand(input)); |
| 4503 | } |
| 4504 | |
| 4505 | |
| 4506 | void LCodeGen::DoUint32ToDouble(LUint32ToDouble* instr) { |
| 4507 | LOperand* input = instr->value(); |
| 4508 | LOperand* output = instr->result(); |
| 4509 | __ LoadUint32(ToDoubleRegister(output), ToRegister(input)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4510 | } |
| 4511 | |
| 4512 | |
| 4513 | void LCodeGen::DoNumberTagI(LNumberTagI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4514 | class DeferredNumberTagI FINAL : public LDeferredCode { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4515 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4516 | DeferredNumberTagI(LCodeGen* codegen, |
| 4517 | LNumberTagI* instr) |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4518 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4519 | void Generate() OVERRIDE { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4520 | codegen()->DoDeferredNumberTagIU( |
| 4521 | instr_, instr_->value(), instr_->temp(), SIGNED_INT32); |
| 4522 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4523 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4524 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4525 | private: |
| 4526 | LNumberTagI* instr_; |
| 4527 | }; |
| 4528 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4529 | LOperand* input = instr->value(); |
| 4530 | DCHECK(input->IsRegister() && input->Equals(instr->result())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4531 | Register reg = ToRegister(input); |
| 4532 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4533 | DeferredNumberTagI* deferred = |
| 4534 | new(zone()) DeferredNumberTagI(this, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4535 | __ SmiTag(reg); |
| 4536 | __ j(overflow, deferred->entry()); |
| 4537 | __ bind(deferred->exit()); |
| 4538 | } |
| 4539 | |
| 4540 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4541 | void LCodeGen::DoNumberTagU(LNumberTagU* instr) { |
| 4542 | class DeferredNumberTagU FINAL : public LDeferredCode { |
| 4543 | public: |
| 4544 | DeferredNumberTagU(LCodeGen* codegen, LNumberTagU* instr) |
| 4545 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4546 | void Generate() OVERRIDE { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4547 | codegen()->DoDeferredNumberTagIU( |
| 4548 | instr_, instr_->value(), instr_->temp(), UNSIGNED_INT32); |
| 4549 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4550 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4551 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4552 | private: |
| 4553 | LNumberTagU* instr_; |
| 4554 | }; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4555 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4556 | LOperand* input = instr->value(); |
| 4557 | DCHECK(input->IsRegister() && input->Equals(instr->result())); |
| 4558 | Register reg = ToRegister(input); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4559 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4560 | DeferredNumberTagU* deferred = |
| 4561 | new(zone()) DeferredNumberTagU(this, instr); |
| 4562 | __ cmp(reg, Immediate(Smi::kMaxValue)); |
| 4563 | __ j(above, deferred->entry()); |
| 4564 | __ SmiTag(reg); |
| 4565 | __ bind(deferred->exit()); |
| 4566 | } |
| 4567 | |
| 4568 | |
| 4569 | void LCodeGen::DoDeferredNumberTagIU(LInstruction* instr, |
| 4570 | LOperand* value, |
| 4571 | LOperand* temp, |
| 4572 | IntegerSignedness signedness) { |
| 4573 | Label done, slow; |
| 4574 | Register reg = ToRegister(value); |
| 4575 | Register tmp = ToRegister(temp); |
| 4576 | XMMRegister xmm_scratch = double_scratch0(); |
| 4577 | |
| 4578 | if (signedness == SIGNED_INT32) { |
| 4579 | // There was overflow, so bits 30 and 31 of the original integer |
| 4580 | // disagree. Try to allocate a heap number in new space and store |
| 4581 | // the value in there. If that fails, call the runtime system. |
| 4582 | __ SmiUntag(reg); |
| 4583 | __ xor_(reg, 0x80000000); |
| 4584 | __ Cvtsi2sd(xmm_scratch, Operand(reg)); |
| 4585 | } else { |
| 4586 | __ LoadUint32(xmm_scratch, reg); |
| 4587 | } |
| 4588 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4589 | if (FLAG_inline_new) { |
| 4590 | __ AllocateHeapNumber(reg, tmp, no_reg, &slow); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4591 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4592 | } |
| 4593 | |
| 4594 | // Slow case: Call the runtime system to do the number allocation. |
| 4595 | __ bind(&slow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4596 | { |
| 4597 | // TODO(3095996): Put a valid pointer value in the stack slot where the |
| 4598 | // result register is stored, as this register is in the pointer map, but |
| 4599 | // contains an integer value. |
| 4600 | __ Move(reg, Immediate(0)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4601 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4602 | // Preserve the value of all registers. |
| 4603 | PushSafepointRegistersScope scope(this); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4604 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4605 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4606 | // the environment's HContext or HInlinedContext value. |
| 4607 | // They only call Runtime::kAllocateHeapNumber. |
| 4608 | // The corresponding HChange instructions are added in a phase that does |
| 4609 | // not have easy access to the local context. |
| 4610 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4611 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
| 4612 | RecordSafepointWithRegisters( |
| 4613 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
| 4614 | __ StoreToSafepointRegisterSlot(reg, eax); |
| 4615 | } |
| 4616 | |
| 4617 | // Done. Put the value in xmm_scratch into the value of the allocated heap |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4618 | // number. |
| 4619 | __ bind(&done); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4620 | __ movsd(FieldOperand(reg, HeapNumber::kValueOffset), xmm_scratch); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4621 | } |
| 4622 | |
| 4623 | |
| 4624 | void LCodeGen::DoNumberTagD(LNumberTagD* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4625 | class DeferredNumberTagD FINAL : public LDeferredCode { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4626 | public: |
| 4627 | DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr) |
| 4628 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4629 | void Generate() OVERRIDE { codegen()->DoDeferredNumberTagD(instr_); } |
| 4630 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4631 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4632 | private: |
| 4633 | LNumberTagD* instr_; |
| 4634 | }; |
| 4635 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4636 | Register reg = ToRegister(instr->result()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4637 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4638 | DeferredNumberTagD* deferred = |
| 4639 | new(zone()) DeferredNumberTagD(this, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4640 | if (FLAG_inline_new) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4641 | Register tmp = ToRegister(instr->temp()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4642 | __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); |
| 4643 | } else { |
| 4644 | __ jmp(deferred->entry()); |
| 4645 | } |
| 4646 | __ bind(deferred->exit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4647 | XMMRegister input_reg = ToDoubleRegister(instr->value()); |
| 4648 | __ movsd(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4649 | } |
| 4650 | |
| 4651 | |
| 4652 | void LCodeGen::DoDeferredNumberTagD(LNumberTagD* instr) { |
| 4653 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 4654 | // result register contain a valid pointer because it is already |
| 4655 | // contained in the register pointer map. |
| 4656 | Register reg = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4657 | __ Move(reg, Immediate(0)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4658 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 4659 | PushSafepointRegistersScope scope(this); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4660 | // NumberTagI and NumberTagD use the context from the frame, rather than |
| 4661 | // the environment's HContext or HInlinedContext value. |
| 4662 | // They only call Runtime::kAllocateHeapNumber. |
| 4663 | // The corresponding HChange instructions are added in a phase that does |
| 4664 | // not have easy access to the local context. |
| 4665 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 4666 | __ CallRuntimeSaveDoubles(Runtime::kAllocateHeapNumber); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 4667 | RecordSafepointWithRegisters( |
| 4668 | instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 4669 | __ StoreToSafepointRegisterSlot(reg, eax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4670 | } |
| 4671 | |
| 4672 | |
| 4673 | void LCodeGen::DoSmiTag(LSmiTag* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4674 | HChange* hchange = instr->hydrogen(); |
| 4675 | Register input = ToRegister(instr->value()); |
| 4676 | if (hchange->CheckFlag(HValue::kCanOverflow) && |
| 4677 | hchange->value()->CheckFlag(HValue::kUint32)) { |
| 4678 | __ test(input, Immediate(0xc0000000)); |
| 4679 | DeoptimizeIf(not_zero, instr, "overflow"); |
| 4680 | } |
| 4681 | __ SmiTag(input); |
| 4682 | if (hchange->CheckFlag(HValue::kCanOverflow) && |
| 4683 | !hchange->value()->CheckFlag(HValue::kUint32)) { |
| 4684 | DeoptimizeIf(overflow, instr, "overflow"); |
| 4685 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4686 | } |
| 4687 | |
| 4688 | |
| 4689 | void LCodeGen::DoSmiUntag(LSmiUntag* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4690 | LOperand* input = instr->value(); |
| 4691 | Register result = ToRegister(input); |
| 4692 | DCHECK(input->IsRegister() && input->Equals(instr->result())); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4693 | if (instr->needs_check()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4694 | __ test(result, Immediate(kSmiTagMask)); |
| 4695 | DeoptimizeIf(not_zero, instr, "not a Smi"); |
| 4696 | } else { |
| 4697 | __ AssertSmi(result); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4698 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4699 | __ SmiUntag(result); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4700 | } |
| 4701 | |
| 4702 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4703 | void LCodeGen::EmitNumberUntagD(LNumberUntagD* instr, Register input_reg, |
| 4704 | Register temp_reg, XMMRegister result_reg, |
| 4705 | NumberUntagDMode mode) { |
| 4706 | bool can_convert_undefined_to_nan = |
| 4707 | instr->hydrogen()->can_convert_undefined_to_nan(); |
| 4708 | bool deoptimize_on_minus_zero = instr->hydrogen()->deoptimize_on_minus_zero(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4709 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4710 | Label convert, load_smi, done; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4711 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4712 | if (mode == NUMBER_CANDIDATE_IS_ANY_TAGGED) { |
| 4713 | // Smi check. |
| 4714 | __ JumpIfSmi(input_reg, &load_smi, Label::kNear); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4715 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4716 | // Heap number map check. |
| 4717 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4718 | factory()->heap_number_map()); |
| 4719 | if (can_convert_undefined_to_nan) { |
| 4720 | __ j(not_equal, &convert, Label::kNear); |
| 4721 | } else { |
| 4722 | DeoptimizeIf(not_equal, instr, "not a heap number"); |
| 4723 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4724 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4725 | // Heap number to XMM conversion. |
| 4726 | __ movsd(result_reg, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 4727 | |
| 4728 | if (deoptimize_on_minus_zero) { |
| 4729 | XMMRegister xmm_scratch = double_scratch0(); |
| 4730 | __ xorps(xmm_scratch, xmm_scratch); |
| 4731 | __ ucomisd(result_reg, xmm_scratch); |
| 4732 | __ j(not_zero, &done, Label::kNear); |
| 4733 | __ movmskpd(temp_reg, result_reg); |
| 4734 | __ test_b(temp_reg, 1); |
| 4735 | DeoptimizeIf(not_zero, instr, "minus zero"); |
| 4736 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4737 | __ jmp(&done, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4738 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4739 | if (can_convert_undefined_to_nan) { |
| 4740 | __ bind(&convert); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4741 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4742 | // Convert undefined (and hole) to NaN. |
| 4743 | __ cmp(input_reg, factory()->undefined_value()); |
| 4744 | DeoptimizeIf(not_equal, instr, "not a heap number/undefined"); |
| 4745 | |
| 4746 | ExternalReference nan = |
| 4747 | ExternalReference::address_of_canonical_non_hole_nan(); |
| 4748 | __ movsd(result_reg, Operand::StaticVariable(nan)); |
| 4749 | __ jmp(&done, Label::kNear); |
| 4750 | } |
| 4751 | } else { |
| 4752 | DCHECK(mode == NUMBER_CANDIDATE_IS_SMI); |
| 4753 | } |
| 4754 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4755 | __ bind(&load_smi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4756 | // Smi to XMM conversion. Clobbering a temp is faster than re-tagging the |
| 4757 | // input register since we avoid dependencies. |
| 4758 | __ mov(temp_reg, input_reg); |
| 4759 | __ SmiUntag(temp_reg); // Untag smi before converting to float. |
| 4760 | __ Cvtsi2sd(result_reg, Operand(temp_reg)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4761 | __ bind(&done); |
| 4762 | } |
| 4763 | |
| 4764 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4765 | void LCodeGen::DoDeferredTaggedToI(LTaggedToI* instr, Label* done) { |
| 4766 | Register input_reg = ToRegister(instr->value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4767 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4768 | // The input was optimistically untagged; revert it. |
| 4769 | STATIC_ASSERT(kSmiTagSize == 1); |
| 4770 | __ lea(input_reg, Operand(input_reg, times_2, kHeapObjectTag)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4771 | |
| 4772 | if (instr->truncating()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4773 | Label no_heap_number, check_bools, check_false; |
| 4774 | |
| 4775 | // Heap number map check. |
| 4776 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4777 | factory()->heap_number_map()); |
| 4778 | __ j(not_equal, &no_heap_number, Label::kNear); |
| 4779 | __ TruncateHeapNumberToI(input_reg, input_reg); |
| 4780 | __ jmp(done); |
| 4781 | |
| 4782 | __ bind(&no_heap_number); |
| 4783 | // Check for Oddballs. Undefined/False is converted to zero and True to one |
| 4784 | // for truncating conversions. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4785 | __ cmp(input_reg, factory()->undefined_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4786 | __ j(not_equal, &check_bools, Label::kNear); |
| 4787 | __ Move(input_reg, Immediate(0)); |
| 4788 | __ jmp(done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4789 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4790 | __ bind(&check_bools); |
| 4791 | __ cmp(input_reg, factory()->true_value()); |
| 4792 | __ j(not_equal, &check_false, Label::kNear); |
| 4793 | __ Move(input_reg, Immediate(1)); |
| 4794 | __ jmp(done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4795 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4796 | __ bind(&check_false); |
| 4797 | __ cmp(input_reg, factory()->false_value()); |
| 4798 | DeoptimizeIf(not_equal, instr, "not a heap number/undefined/true/false"); |
| 4799 | __ Move(input_reg, Immediate(0)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4800 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4801 | XMMRegister scratch = ToDoubleRegister(instr->temp()); |
| 4802 | DCHECK(!scratch.is(xmm0)); |
| 4803 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 4804 | isolate()->factory()->heap_number_map()); |
| 4805 | DeoptimizeIf(not_equal, instr, "not a heap number"); |
| 4806 | __ movsd(xmm0, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4807 | __ cvttsd2si(input_reg, Operand(xmm0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4808 | __ Cvtsi2sd(scratch, Operand(input_reg)); |
| 4809 | __ ucomisd(xmm0, scratch); |
| 4810 | DeoptimizeIf(not_equal, instr, "lost precision"); |
| 4811 | DeoptimizeIf(parity_even, instr, "NaN"); |
| 4812 | if (instr->hydrogen()->GetMinusZeroMode() == FAIL_ON_MINUS_ZERO) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4813 | __ test(input_reg, Operand(input_reg)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4814 | __ j(not_zero, done); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4815 | __ movmskpd(input_reg, xmm0); |
| 4816 | __ and_(input_reg, 1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4817 | DeoptimizeIf(not_zero, instr, "minus zero"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4818 | } |
| 4819 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4820 | } |
| 4821 | |
| 4822 | |
| 4823 | void LCodeGen::DoTaggedToI(LTaggedToI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4824 | class DeferredTaggedToI FINAL : public LDeferredCode { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4825 | public: |
| 4826 | DeferredTaggedToI(LCodeGen* codegen, LTaggedToI* instr) |
| 4827 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 4828 | void Generate() OVERRIDE { codegen()->DoDeferredTaggedToI(instr_, done()); } |
| 4829 | LInstruction* instr() OVERRIDE { return instr_; } |
| 4830 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4831 | private: |
| 4832 | LTaggedToI* instr_; |
| 4833 | }; |
| 4834 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4835 | LOperand* input = instr->value(); |
| 4836 | DCHECK(input->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4837 | Register input_reg = ToRegister(input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4838 | DCHECK(input_reg.is(ToRegister(instr->result()))); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4839 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4840 | if (instr->hydrogen()->value()->representation().IsSmi()) { |
| 4841 | __ SmiUntag(input_reg); |
| 4842 | } else { |
| 4843 | DeferredTaggedToI* deferred = |
| 4844 | new(zone()) DeferredTaggedToI(this, instr); |
| 4845 | // Optimistically untag the input. |
| 4846 | // If the input is a HeapObject, SmiUntag will set the carry flag. |
| 4847 | STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| 4848 | __ SmiUntag(input_reg); |
| 4849 | // Branch to deferred code if the input was tagged. |
| 4850 | // The deferred code will take care of restoring the tag. |
| 4851 | __ j(carry, deferred->entry()); |
| 4852 | __ bind(deferred->exit()); |
| 4853 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4854 | } |
| 4855 | |
| 4856 | |
| 4857 | void LCodeGen::DoNumberUntagD(LNumberUntagD* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4858 | LOperand* input = instr->value(); |
| 4859 | DCHECK(input->IsRegister()); |
| 4860 | LOperand* temp = instr->temp(); |
| 4861 | DCHECK(temp->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4862 | LOperand* result = instr->result(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4863 | DCHECK(result->IsDoubleRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4864 | |
| 4865 | Register input_reg = ToRegister(input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4866 | Register temp_reg = ToRegister(temp); |
| 4867 | |
| 4868 | HValue* value = instr->hydrogen()->value(); |
| 4869 | NumberUntagDMode mode = value->representation().IsSmi() |
| 4870 | ? NUMBER_CANDIDATE_IS_SMI : NUMBER_CANDIDATE_IS_ANY_TAGGED; |
| 4871 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4872 | XMMRegister result_reg = ToDoubleRegister(result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4873 | EmitNumberUntagD(instr, input_reg, temp_reg, result_reg, mode); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4874 | } |
| 4875 | |
| 4876 | |
| 4877 | void LCodeGen::DoDoubleToI(LDoubleToI* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4878 | LOperand* input = instr->value(); |
| 4879 | DCHECK(input->IsDoubleRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4880 | LOperand* result = instr->result(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4881 | DCHECK(result->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4882 | Register result_reg = ToRegister(result); |
| 4883 | |
| 4884 | if (instr->truncating()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4885 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4886 | __ TruncateDoubleToI(result_reg, input_reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4887 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4888 | Label lost_precision, is_nan, minus_zero, done; |
| 4889 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4890 | XMMRegister xmm_scratch = double_scratch0(); |
| 4891 | Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear; |
| 4892 | __ DoubleToI(result_reg, input_reg, xmm_scratch, |
| 4893 | instr->hydrogen()->GetMinusZeroMode(), &lost_precision, |
| 4894 | &is_nan, &minus_zero, dist); |
| 4895 | __ jmp(&done, dist); |
| 4896 | __ bind(&lost_precision); |
| 4897 | DeoptimizeIf(no_condition, instr, "lost precision"); |
| 4898 | __ bind(&is_nan); |
| 4899 | DeoptimizeIf(no_condition, instr, "NaN"); |
| 4900 | __ bind(&minus_zero); |
| 4901 | DeoptimizeIf(no_condition, instr, "minus zero"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4902 | __ bind(&done); |
| 4903 | } |
| 4904 | } |
| 4905 | |
| 4906 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4907 | void LCodeGen::DoDoubleToSmi(LDoubleToSmi* instr) { |
| 4908 | LOperand* input = instr->value(); |
| 4909 | DCHECK(input->IsDoubleRegister()); |
| 4910 | LOperand* result = instr->result(); |
| 4911 | DCHECK(result->IsRegister()); |
| 4912 | Register result_reg = ToRegister(result); |
| 4913 | |
| 4914 | Label lost_precision, is_nan, minus_zero, done; |
| 4915 | XMMRegister input_reg = ToDoubleRegister(input); |
| 4916 | XMMRegister xmm_scratch = double_scratch0(); |
| 4917 | Label::Distance dist = DeoptEveryNTimes() ? Label::kFar : Label::kNear; |
| 4918 | __ DoubleToI(result_reg, input_reg, xmm_scratch, |
| 4919 | instr->hydrogen()->GetMinusZeroMode(), &lost_precision, &is_nan, |
| 4920 | &minus_zero, dist); |
| 4921 | __ jmp(&done, dist); |
| 4922 | __ bind(&lost_precision); |
| 4923 | DeoptimizeIf(no_condition, instr, "lost precision"); |
| 4924 | __ bind(&is_nan); |
| 4925 | DeoptimizeIf(no_condition, instr, "NaN"); |
| 4926 | __ bind(&minus_zero); |
| 4927 | DeoptimizeIf(no_condition, instr, "minus zero"); |
| 4928 | __ bind(&done); |
| 4929 | __ SmiTag(result_reg); |
| 4930 | DeoptimizeIf(overflow, instr, "overflow"); |
| 4931 | } |
| 4932 | |
| 4933 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4934 | void LCodeGen::DoCheckSmi(LCheckSmi* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4935 | LOperand* input = instr->value(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 4936 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4937 | DeoptimizeIf(not_zero, instr, "not a Smi"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4938 | } |
| 4939 | |
| 4940 | |
| 4941 | void LCodeGen::DoCheckNonSmi(LCheckNonSmi* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4942 | if (!instr->hydrogen()->value()->type().IsHeapObject()) { |
| 4943 | LOperand* input = instr->value(); |
| 4944 | __ test(ToOperand(input), Immediate(kSmiTagMask)); |
| 4945 | DeoptimizeIf(zero, instr, "Smi"); |
| 4946 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4947 | } |
| 4948 | |
| 4949 | |
| 4950 | void LCodeGen::DoCheckInstanceType(LCheckInstanceType* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4951 | Register input = ToRegister(instr->value()); |
| 4952 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4953 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4954 | __ mov(temp, FieldOperand(input, HeapObject::kMapOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4955 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4956 | if (instr->hydrogen()->is_interval_check()) { |
| 4957 | InstanceType first; |
| 4958 | InstanceType last; |
| 4959 | instr->hydrogen()->GetCheckInterval(&first, &last); |
| 4960 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 4961 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4962 | static_cast<int8_t>(first)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4963 | |
| 4964 | // If there is only one type in the interval check for equality. |
| 4965 | if (first == last) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4966 | DeoptimizeIf(not_equal, instr, "wrong instance type"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4967 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4968 | DeoptimizeIf(below, instr, "wrong instance type"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4969 | // Omit check for the last type. |
| 4970 | if (last != LAST_TYPE) { |
| 4971 | __ cmpb(FieldOperand(temp, Map::kInstanceTypeOffset), |
| 4972 | static_cast<int8_t>(last)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4973 | DeoptimizeIf(above, instr, "wrong instance type"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4974 | } |
| 4975 | } |
| 4976 | } else { |
| 4977 | uint8_t mask; |
| 4978 | uint8_t tag; |
| 4979 | instr->hydrogen()->GetCheckMaskAndTag(&mask, &tag); |
| 4980 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4981 | if (base::bits::IsPowerOfTwo32(mask)) { |
| 4982 | DCHECK(tag == 0 || base::bits::IsPowerOfTwo32(tag)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4983 | __ test_b(FieldOperand(temp, Map::kInstanceTypeOffset), mask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4984 | DeoptimizeIf(tag == 0 ? not_zero : zero, instr, "wrong instance type"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 4985 | } else { |
| 4986 | __ movzx_b(temp, FieldOperand(temp, Map::kInstanceTypeOffset)); |
| 4987 | __ and_(temp, mask); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4988 | __ cmp(temp, tag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4989 | DeoptimizeIf(not_equal, instr, "wrong instance type"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 4990 | } |
| 4991 | } |
| 4992 | } |
| 4993 | |
| 4994 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4995 | void LCodeGen::DoCheckValue(LCheckValue* instr) { |
| 4996 | Handle<HeapObject> object = instr->hydrogen()->object().handle(); |
| 4997 | if (instr->hydrogen()->object_in_new_space()) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 4998 | Register reg = ToRegister(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 4999 | Handle<Cell> cell = isolate()->factory()->NewCell(object); |
| 5000 | __ cmp(reg, Operand::ForCell(cell)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5001 | } else { |
| 5002 | Operand operand = ToOperand(instr->value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5003 | __ cmp(operand, object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5004 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5005 | DeoptimizeIf(not_equal, instr, "value mismatch"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5006 | } |
| 5007 | |
| 5008 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5009 | void LCodeGen::DoDeferredInstanceMigration(LCheckMaps* instr, Register object) { |
| 5010 | { |
| 5011 | PushSafepointRegistersScope scope(this); |
| 5012 | __ push(object); |
| 5013 | __ xor_(esi, esi); |
| 5014 | __ CallRuntimeSaveDoubles(Runtime::kTryMigrateInstance); |
| 5015 | RecordSafepointWithRegisters( |
| 5016 | instr->pointer_map(), 1, Safepoint::kNoLazyDeopt); |
| 5017 | |
| 5018 | __ test(eax, Immediate(kSmiTagMask)); |
| 5019 | } |
| 5020 | DeoptimizeIf(zero, instr, "instance migration failed"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5021 | } |
| 5022 | |
| 5023 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5024 | void LCodeGen::DoCheckMaps(LCheckMaps* instr) { |
| 5025 | class DeferredCheckMaps FINAL : public LDeferredCode { |
| 5026 | public: |
| 5027 | DeferredCheckMaps(LCodeGen* codegen, LCheckMaps* instr, Register object) |
| 5028 | : LDeferredCode(codegen), instr_(instr), object_(object) { |
| 5029 | SetExit(check_maps()); |
| 5030 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5031 | void Generate() OVERRIDE { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5032 | codegen()->DoDeferredInstanceMigration(instr_, object_); |
| 5033 | } |
| 5034 | Label* check_maps() { return &check_maps_; } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5035 | LInstruction* instr() OVERRIDE { return instr_; } |
| 5036 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5037 | private: |
| 5038 | LCheckMaps* instr_; |
| 5039 | Label check_maps_; |
| 5040 | Register object_; |
| 5041 | }; |
| 5042 | |
| 5043 | if (instr->hydrogen()->IsStabilityCheck()) { |
| 5044 | const UniqueSet<Map>* maps = instr->hydrogen()->maps(); |
| 5045 | for (int i = 0; i < maps->size(); ++i) { |
| 5046 | AddStabilityDependency(maps->at(i).handle()); |
| 5047 | } |
| 5048 | return; |
| 5049 | } |
| 5050 | |
| 5051 | LOperand* input = instr->value(); |
| 5052 | DCHECK(input->IsRegister()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5053 | Register reg = ToRegister(input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5054 | |
| 5055 | DeferredCheckMaps* deferred = NULL; |
| 5056 | if (instr->hydrogen()->HasMigrationTarget()) { |
| 5057 | deferred = new(zone()) DeferredCheckMaps(this, instr, reg); |
| 5058 | __ bind(deferred->check_maps()); |
| 5059 | } |
| 5060 | |
| 5061 | const UniqueSet<Map>* maps = instr->hydrogen()->maps(); |
| 5062 | Label success; |
| 5063 | for (int i = 0; i < maps->size() - 1; i++) { |
| 5064 | Handle<Map> map = maps->at(i).handle(); |
| 5065 | __ CompareMap(reg, map); |
| 5066 | __ j(equal, &success, Label::kNear); |
| 5067 | } |
| 5068 | |
| 5069 | Handle<Map> map = maps->at(maps->size() - 1).handle(); |
| 5070 | __ CompareMap(reg, map); |
| 5071 | if (instr->hydrogen()->HasMigrationTarget()) { |
| 5072 | __ j(not_equal, deferred->entry()); |
| 5073 | } else { |
| 5074 | DeoptimizeIf(not_equal, instr, "wrong map"); |
| 5075 | } |
| 5076 | |
| 5077 | __ bind(&success); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5078 | } |
| 5079 | |
| 5080 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5081 | void LCodeGen::DoClampDToUint8(LClampDToUint8* instr) { |
| 5082 | XMMRegister value_reg = ToDoubleRegister(instr->unclamped()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5083 | XMMRegister xmm_scratch = double_scratch0(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5084 | Register result_reg = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5085 | __ ClampDoubleToUint8(value_reg, xmm_scratch, result_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5086 | } |
| 5087 | |
| 5088 | |
| 5089 | void LCodeGen::DoClampIToUint8(LClampIToUint8* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5090 | DCHECK(instr->unclamped()->Equals(instr->result())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5091 | Register value_reg = ToRegister(instr->result()); |
| 5092 | __ ClampUint8(value_reg); |
| 5093 | } |
| 5094 | |
| 5095 | |
| 5096 | void LCodeGen::DoClampTToUint8(LClampTToUint8* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5097 | DCHECK(instr->unclamped()->Equals(instr->result())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5098 | Register input_reg = ToRegister(instr->unclamped()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5099 | XMMRegister temp_xmm_reg = ToDoubleRegister(instr->temp_xmm()); |
| 5100 | XMMRegister xmm_scratch = double_scratch0(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5101 | Label is_smi, done, heap_number; |
| 5102 | |
| 5103 | __ JumpIfSmi(input_reg, &is_smi); |
| 5104 | |
| 5105 | // Check for heap number |
| 5106 | __ cmp(FieldOperand(input_reg, HeapObject::kMapOffset), |
| 5107 | factory()->heap_number_map()); |
| 5108 | __ j(equal, &heap_number, Label::kNear); |
| 5109 | |
| 5110 | // Check for undefined. Undefined is converted to zero for clamping |
| 5111 | // conversions. |
| 5112 | __ cmp(input_reg, factory()->undefined_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5113 | DeoptimizeIf(not_equal, instr, "not a heap number/undefined"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5114 | __ mov(input_reg, 0); |
| 5115 | __ jmp(&done, Label::kNear); |
| 5116 | |
| 5117 | // Heap number |
| 5118 | __ bind(&heap_number); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5119 | __ movsd(xmm_scratch, FieldOperand(input_reg, HeapNumber::kValueOffset)); |
| 5120 | __ ClampDoubleToUint8(xmm_scratch, temp_xmm_reg, input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5121 | __ jmp(&done, Label::kNear); |
| 5122 | |
| 5123 | // smi |
| 5124 | __ bind(&is_smi); |
| 5125 | __ SmiUntag(input_reg); |
| 5126 | __ ClampUint8(input_reg); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5127 | __ bind(&done); |
| 5128 | } |
| 5129 | |
| 5130 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5131 | void LCodeGen::DoDoubleBits(LDoubleBits* instr) { |
| 5132 | XMMRegister value_reg = ToDoubleRegister(instr->value()); |
| 5133 | Register result_reg = ToRegister(instr->result()); |
| 5134 | if (instr->hydrogen()->bits() == HDoubleBits::HIGH) { |
| 5135 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 5136 | CpuFeatureScope scope2(masm(), SSE4_1); |
| 5137 | __ pextrd(result_reg, value_reg, 1); |
| 5138 | } else { |
| 5139 | XMMRegister xmm_scratch = double_scratch0(); |
| 5140 | __ pshufd(xmm_scratch, value_reg, 1); |
| 5141 | __ movd(result_reg, xmm_scratch); |
| 5142 | } |
| 5143 | } else { |
| 5144 | __ movd(result_reg, value_reg); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5145 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5146 | } |
| 5147 | |
| 5148 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5149 | void LCodeGen::DoConstructDouble(LConstructDouble* instr) { |
| 5150 | Register hi_reg = ToRegister(instr->hi()); |
| 5151 | Register lo_reg = ToRegister(instr->lo()); |
| 5152 | XMMRegister result_reg = ToDoubleRegister(instr->result()); |
| 5153 | |
| 5154 | if (CpuFeatures::IsSupported(SSE4_1)) { |
| 5155 | CpuFeatureScope scope2(masm(), SSE4_1); |
| 5156 | __ movd(result_reg, lo_reg); |
| 5157 | __ pinsrd(result_reg, hi_reg, 1); |
| 5158 | } else { |
| 5159 | XMMRegister xmm_scratch = double_scratch0(); |
| 5160 | __ movd(result_reg, hi_reg); |
| 5161 | __ psllq(result_reg, 32); |
| 5162 | __ movd(xmm_scratch, lo_reg); |
| 5163 | __ orps(result_reg, xmm_scratch); |
| 5164 | } |
| 5165 | } |
| 5166 | |
| 5167 | |
| 5168 | void LCodeGen::DoAllocate(LAllocate* instr) { |
| 5169 | class DeferredAllocate FINAL : public LDeferredCode { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5170 | public: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5171 | DeferredAllocate(LCodeGen* codegen, LAllocate* instr) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5172 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5173 | void Generate() OVERRIDE { codegen()->DoDeferredAllocate(instr_); } |
| 5174 | LInstruction* instr() OVERRIDE { return instr_; } |
| 5175 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5176 | private: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5177 | LAllocate* instr_; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5178 | }; |
| 5179 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5180 | DeferredAllocate* deferred = new(zone()) DeferredAllocate(this, instr); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5181 | |
| 5182 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5183 | Register temp = ToRegister(instr->temp()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5184 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5185 | // Allocate memory for the object. |
| 5186 | AllocationFlags flags = TAG_OBJECT; |
| 5187 | if (instr->hydrogen()->MustAllocateDoubleAligned()) { |
| 5188 | flags = static_cast<AllocationFlags>(flags | DOUBLE_ALIGNMENT); |
| 5189 | } |
| 5190 | if (instr->hydrogen()->IsOldPointerSpaceAllocation()) { |
| 5191 | DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation()); |
| 5192 | DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); |
| 5193 | flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_POINTER_SPACE); |
| 5194 | } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) { |
| 5195 | DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); |
| 5196 | flags = static_cast<AllocationFlags>(flags | PRETENURE_OLD_DATA_SPACE); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5197 | } |
| 5198 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5199 | if (instr->size()->IsConstantOperand()) { |
| 5200 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
| 5201 | if (size <= Page::kMaxRegularHeapObjectSize) { |
| 5202 | __ Allocate(size, result, temp, no_reg, deferred->entry(), flags); |
| 5203 | } else { |
| 5204 | __ jmp(deferred->entry()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5205 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5206 | } else { |
| 5207 | Register size = ToRegister(instr->size()); |
| 5208 | __ Allocate(size, result, temp, no_reg, deferred->entry(), flags); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5209 | } |
| 5210 | |
| 5211 | __ bind(deferred->exit()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5212 | |
| 5213 | if (instr->hydrogen()->MustPrefillWithFiller()) { |
| 5214 | if (instr->size()->IsConstantOperand()) { |
| 5215 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
| 5216 | __ mov(temp, (size / kPointerSize) - 1); |
| 5217 | } else { |
| 5218 | temp = ToRegister(instr->size()); |
| 5219 | __ shr(temp, kPointerSizeLog2); |
| 5220 | __ dec(temp); |
| 5221 | } |
| 5222 | Label loop; |
| 5223 | __ bind(&loop); |
| 5224 | __ mov(FieldOperand(result, temp, times_pointer_size, 0), |
| 5225 | isolate()->factory()->one_pointer_filler_map()); |
| 5226 | __ dec(temp); |
| 5227 | __ j(not_zero, &loop); |
| 5228 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5229 | } |
| 5230 | |
| 5231 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5232 | void LCodeGen::DoDeferredAllocate(LAllocate* instr) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5233 | Register result = ToRegister(instr->result()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5234 | |
| 5235 | // TODO(3095996): Get rid of this. For now, we need to make the |
| 5236 | // result register contain a valid pointer because it is already |
| 5237 | // contained in the register pointer map. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5238 | __ Move(result, Immediate(Smi::FromInt(0))); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5239 | |
| 5240 | PushSafepointRegistersScope scope(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5241 | if (instr->size()->IsRegister()) { |
| 5242 | Register size = ToRegister(instr->size()); |
| 5243 | DCHECK(!size.is(result)); |
| 5244 | __ SmiTag(ToRegister(instr->size())); |
| 5245 | __ push(size); |
| 5246 | } else { |
| 5247 | int32_t size = ToInteger32(LConstantOperand::cast(instr->size())); |
| 5248 | if (size >= 0 && size <= Smi::kMaxValue) { |
| 5249 | __ push(Immediate(Smi::FromInt(size))); |
| 5250 | } else { |
| 5251 | // We should never get here at runtime => abort |
| 5252 | __ int3(); |
| 5253 | return; |
| 5254 | } |
| 5255 | } |
| 5256 | |
| 5257 | int flags = AllocateDoubleAlignFlag::encode( |
| 5258 | instr->hydrogen()->MustAllocateDoubleAligned()); |
| 5259 | if (instr->hydrogen()->IsOldPointerSpaceAllocation()) { |
| 5260 | DCHECK(!instr->hydrogen()->IsOldDataSpaceAllocation()); |
| 5261 | DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); |
| 5262 | flags = AllocateTargetSpace::update(flags, OLD_POINTER_SPACE); |
| 5263 | } else if (instr->hydrogen()->IsOldDataSpaceAllocation()) { |
| 5264 | DCHECK(!instr->hydrogen()->IsNewSpaceAllocation()); |
| 5265 | flags = AllocateTargetSpace::update(flags, OLD_DATA_SPACE); |
| 5266 | } else { |
| 5267 | flags = AllocateTargetSpace::update(flags, NEW_SPACE); |
| 5268 | } |
| 5269 | __ push(Immediate(Smi::FromInt(flags))); |
| 5270 | |
| 5271 | CallRuntimeFromDeferred( |
| 5272 | Runtime::kAllocateInTargetSpace, 2, instr, instr->context()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5273 | __ StoreToSafepointRegisterSlot(result, eax); |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame] | 5274 | } |
| 5275 | |
| 5276 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5277 | void LCodeGen::DoToFastProperties(LToFastProperties* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5278 | DCHECK(ToRegister(instr->value()).is(eax)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5279 | __ push(eax); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5280 | CallRuntime(Runtime::kToFastProperties, 1, instr); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5281 | } |
| 5282 | |
| 5283 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5284 | void LCodeGen::DoRegExpLiteral(LRegExpLiteral* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5285 | DCHECK(ToRegister(instr->context()).is(esi)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5286 | Label materialized; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5287 | // Registers will be used as follows: |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5288 | // ecx = literals array. |
| 5289 | // ebx = regexp literal. |
| 5290 | // eax = regexp literal clone. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5291 | // esi = context. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5292 | int literal_offset = |
| 5293 | FixedArray::OffsetOfElementAt(instr->hydrogen()->literal_index()); |
| 5294 | __ LoadHeapObject(ecx, instr->hydrogen()->literals()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5295 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5296 | __ cmp(ebx, factory()->undefined_value()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5297 | __ j(not_equal, &materialized, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5298 | |
| 5299 | // Create regexp literal using runtime function |
| 5300 | // Result will be in eax. |
| 5301 | __ push(ecx); |
| 5302 | __ push(Immediate(Smi::FromInt(instr->hydrogen()->literal_index()))); |
| 5303 | __ push(Immediate(instr->hydrogen()->pattern())); |
| 5304 | __ push(Immediate(instr->hydrogen()->flags())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5305 | CallRuntime(Runtime::kMaterializeRegExpLiteral, 4, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5306 | __ mov(ebx, eax); |
| 5307 | |
| 5308 | __ bind(&materialized); |
| 5309 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 5310 | Label allocated, runtime_allocate; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5311 | __ Allocate(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 5312 | __ jmp(&allocated, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5313 | |
| 5314 | __ bind(&runtime_allocate); |
| 5315 | __ push(ebx); |
| 5316 | __ push(Immediate(Smi::FromInt(size))); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5317 | CallRuntime(Runtime::kAllocateInNewSpace, 1, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5318 | __ pop(ebx); |
| 5319 | |
| 5320 | __ bind(&allocated); |
| 5321 | // Copy the content into the newly allocated memory. |
| 5322 | // (Unroll copy loop once for better throughput). |
| 5323 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 5324 | __ mov(edx, FieldOperand(ebx, i)); |
| 5325 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 5326 | __ mov(FieldOperand(eax, i), edx); |
| 5327 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 5328 | } |
| 5329 | if ((size % (2 * kPointerSize)) != 0) { |
| 5330 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 5331 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 5332 | } |
| 5333 | } |
| 5334 | |
| 5335 | |
| 5336 | void LCodeGen::DoFunctionLiteral(LFunctionLiteral* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5337 | DCHECK(ToRegister(instr->context()).is(esi)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5338 | // Use the fast case closure allocation code that allocates in new |
| 5339 | // space for nested functions that don't need literals cloning. |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5340 | bool pretenure = instr->hydrogen()->pretenure(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5341 | if (!pretenure && instr->hydrogen()->has_no_literals()) { |
| 5342 | FastNewClosureStub stub(isolate(), instr->hydrogen()->strict_mode(), |
| 5343 | instr->hydrogen()->kind()); |
| 5344 | __ mov(ebx, Immediate(instr->hydrogen()->shared_info())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5345 | CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5346 | } else { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5347 | __ push(esi); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5348 | __ push(Immediate(instr->hydrogen()->shared_info())); |
| 5349 | __ push(Immediate(pretenure ? factory()->true_value() |
| 5350 | : factory()->false_value())); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5351 | CallRuntime(Runtime::kNewClosure, 3, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5352 | } |
| 5353 | } |
| 5354 | |
| 5355 | |
| 5356 | void LCodeGen::DoTypeof(LTypeof* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5357 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 5358 | LOperand* input = instr->value(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5359 | EmitPushTaggedOperand(input); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5360 | CallRuntime(Runtime::kTypeof, 1, instr); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5361 | } |
| 5362 | |
| 5363 | |
| 5364 | void LCodeGen::DoTypeofIsAndBranch(LTypeofIsAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5365 | Register input = ToRegister(instr->value()); |
| 5366 | Condition final_branch_condition = EmitTypeofIs(instr, input); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5367 | if (final_branch_condition != no_condition) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5368 | EmitBranch(instr, final_branch_condition); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5369 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5370 | } |
| 5371 | |
| 5372 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5373 | Condition LCodeGen::EmitTypeofIs(LTypeofIsAndBranch* instr, Register input) { |
| 5374 | Label* true_label = instr->TrueLabel(chunk_); |
| 5375 | Label* false_label = instr->FalseLabel(chunk_); |
| 5376 | Handle<String> type_name = instr->type_literal(); |
| 5377 | int left_block = instr->TrueDestination(chunk_); |
| 5378 | int right_block = instr->FalseDestination(chunk_); |
| 5379 | int next_block = GetNextEmittedBlock(); |
| 5380 | |
| 5381 | Label::Distance true_distance = left_block == next_block ? Label::kNear |
| 5382 | : Label::kFar; |
| 5383 | Label::Distance false_distance = right_block == next_block ? Label::kNear |
| 5384 | : Label::kFar; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5385 | Condition final_branch_condition = no_condition; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5386 | if (String::Equals(type_name, factory()->number_string())) { |
| 5387 | __ JumpIfSmi(input, true_label, true_distance); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5388 | __ cmp(FieldOperand(input, HeapObject::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5389 | factory()->heap_number_map()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5390 | final_branch_condition = equal; |
| 5391 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5392 | } else if (String::Equals(type_name, factory()->string_string())) { |
| 5393 | __ JumpIfSmi(input, false_label, false_distance); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5394 | __ CmpObjectType(input, FIRST_NONSTRING_TYPE, input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5395 | __ j(above_equal, false_label, false_distance); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5396 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5397 | 1 << Map::kIsUndetectable); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5398 | final_branch_condition = zero; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5399 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5400 | } else if (String::Equals(type_name, factory()->symbol_string())) { |
| 5401 | __ JumpIfSmi(input, false_label, false_distance); |
| 5402 | __ CmpObjectType(input, SYMBOL_TYPE, input); |
| 5403 | final_branch_condition = equal; |
| 5404 | |
| 5405 | } else if (String::Equals(type_name, factory()->boolean_string())) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5406 | __ cmp(input, factory()->true_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5407 | __ j(equal, true_label, true_distance); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5408 | __ cmp(input, factory()->false_value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5409 | final_branch_condition = equal; |
| 5410 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5411 | } else if (String::Equals(type_name, factory()->undefined_string())) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 5412 | __ cmp(input, factory()->undefined_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5413 | __ j(equal, true_label, true_distance); |
| 5414 | __ JumpIfSmi(input, false_label, false_distance); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5415 | // Check for undetectable objects => true. |
| 5416 | __ mov(input, FieldOperand(input, HeapObject::kMapOffset)); |
| 5417 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5418 | 1 << Map::kIsUndetectable); |
| 5419 | final_branch_condition = not_zero; |
| 5420 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5421 | } else if (String::Equals(type_name, factory()->function_string())) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5422 | STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5423 | __ JumpIfSmi(input, false_label, false_distance); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5424 | __ CmpObjectType(input, JS_FUNCTION_TYPE, input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5425 | __ j(equal, true_label, true_distance); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5426 | __ CmpInstanceType(input, JS_FUNCTION_PROXY_TYPE); |
| 5427 | final_branch_condition = equal; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5428 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5429 | } else if (String::Equals(type_name, factory()->object_string())) { |
| 5430 | __ JumpIfSmi(input, false_label, false_distance); |
| 5431 | __ cmp(input, factory()->null_value()); |
| 5432 | __ j(equal, true_label, true_distance); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5433 | __ CmpObjectType(input, FIRST_NONCALLABLE_SPEC_OBJECT_TYPE, input); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5434 | __ j(below, false_label, false_distance); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5435 | __ CmpInstanceType(input, LAST_NONCALLABLE_SPEC_OBJECT_TYPE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5436 | __ j(above, false_label, false_distance); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5437 | // Check for undetectable objects => false. |
| 5438 | __ test_b(FieldOperand(input, Map::kBitFieldOffset), |
| 5439 | 1 << Map::kIsUndetectable); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 5440 | final_branch_condition = zero; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5441 | |
| 5442 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5443 | __ jmp(false_label, false_distance); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5444 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5445 | return final_branch_condition; |
| 5446 | } |
| 5447 | |
| 5448 | |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5449 | void LCodeGen::DoIsConstructCallAndBranch(LIsConstructCallAndBranch* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5450 | Register temp = ToRegister(instr->temp()); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5451 | |
| 5452 | EmitIsConstructCall(temp); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5453 | EmitBranch(instr, equal); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5454 | } |
| 5455 | |
| 5456 | |
| 5457 | void LCodeGen::EmitIsConstructCall(Register temp) { |
| 5458 | // Get the frame pointer for the calling frame. |
| 5459 | __ mov(temp, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 5460 | |
| 5461 | // Skip the arguments adaptor frame if it exists. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5462 | Label check_frame_marker; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5463 | __ cmp(Operand(temp, StandardFrameConstants::kContextOffset), |
| 5464 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5465 | __ j(not_equal, &check_frame_marker, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 5466 | __ mov(temp, Operand(temp, StandardFrameConstants::kCallerFPOffset)); |
| 5467 | |
| 5468 | // Check the marker in the calling frame. |
| 5469 | __ bind(&check_frame_marker); |
| 5470 | __ cmp(Operand(temp, StandardFrameConstants::kMarkerOffset), |
| 5471 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 5472 | } |
| 5473 | |
| 5474 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5475 | void LCodeGen::EnsureSpaceForLazyDeopt(int space_needed) { |
| 5476 | if (!info()->IsStub()) { |
| 5477 | // Ensure that we have enough space after the previous lazy-bailout |
| 5478 | // instruction for patching the code here. |
| 5479 | int current_pc = masm()->pc_offset(); |
| 5480 | if (current_pc < last_lazy_deopt_pc_ + space_needed) { |
| 5481 | int padding_size = last_lazy_deopt_pc_ + space_needed - current_pc; |
| 5482 | __ Nop(padding_size); |
| 5483 | } |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5484 | } |
| 5485 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
| 5486 | } |
| 5487 | |
| 5488 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5489 | void LCodeGen::DoLazyBailout(LLazyBailout* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5490 | last_lazy_deopt_pc_ = masm()->pc_offset(); |
| 5491 | DCHECK(instr->HasEnvironment()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5492 | LEnvironment* env = instr->environment(); |
| 5493 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5494 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5495 | } |
| 5496 | |
| 5497 | |
| 5498 | void LCodeGen::DoDeoptimize(LDeoptimize* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5499 | Deoptimizer::BailoutType type = instr->hydrogen()->type(); |
| 5500 | // TODO(danno): Stubs expect all deopts to be lazy for historical reasons (the |
| 5501 | // needed return address), even though the implementation of LAZY and EAGER is |
| 5502 | // now identical. When LAZY is eventually completely folded into EAGER, remove |
| 5503 | // the special case below. |
| 5504 | if (info()->IsStub() && type == Deoptimizer::EAGER) { |
| 5505 | type = Deoptimizer::LAZY; |
| 5506 | } |
| 5507 | DeoptimizeIf(no_condition, instr, instr->hydrogen()->reason(), type); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5508 | } |
| 5509 | |
| 5510 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5511 | void LCodeGen::DoDummy(LDummy* instr) { |
| 5512 | // Nothing to see here, move on! |
| 5513 | } |
| 5514 | |
| 5515 | |
| 5516 | void LCodeGen::DoDummyUse(LDummyUse* instr) { |
| 5517 | // Nothing to see here, move on! |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5518 | } |
| 5519 | |
| 5520 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5521 | void LCodeGen::DoDeferredStackCheck(LStackCheck* instr) { |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5522 | PushSafepointRegistersScope scope(this); |
| 5523 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 5524 | __ CallRuntimeSaveDoubles(Runtime::kStackGuard); |
| 5525 | RecordSafepointWithLazyDeopt( |
| 5526 | instr, RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5527 | DCHECK(instr->HasEnvironment()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5528 | LEnvironment* env = instr->environment(); |
| 5529 | safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5530 | } |
| 5531 | |
| 5532 | |
| 5533 | void LCodeGen::DoStackCheck(LStackCheck* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5534 | class DeferredStackCheck FINAL : public LDeferredCode { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5535 | public: |
| 5536 | DeferredStackCheck(LCodeGen* codegen, LStackCheck* instr) |
| 5537 | : LDeferredCode(codegen), instr_(instr) { } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5538 | void Generate() OVERRIDE { codegen()->DoDeferredStackCheck(instr_); } |
| 5539 | LInstruction* instr() OVERRIDE { return instr_; } |
| 5540 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5541 | private: |
| 5542 | LStackCheck* instr_; |
| 5543 | }; |
| 5544 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5545 | DCHECK(instr->HasEnvironment()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5546 | LEnvironment* env = instr->environment(); |
| 5547 | // There is no LLazyBailout instruction for stack-checks. We have to |
| 5548 | // prepare for lazy deoptimization explicitly here. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5549 | if (instr->hydrogen()->is_function_entry()) { |
| 5550 | // Perform stack overflow check. |
| 5551 | Label done; |
| 5552 | ExternalReference stack_limit = |
| 5553 | ExternalReference::address_of_stack_limit(isolate()); |
| 5554 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5555 | __ j(above_equal, &done, Label::kNear); |
| 5556 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5557 | DCHECK(instr->context()->IsRegister()); |
| 5558 | DCHECK(ToRegister(instr->context()).is(esi)); |
| 5559 | CallCode(isolate()->builtins()->StackCheck(), |
| 5560 | RelocInfo::CODE_TARGET, |
| 5561 | instr); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5562 | __ bind(&done); |
| 5563 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5564 | DCHECK(instr->hydrogen()->is_backwards_branch()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5565 | // Perform stack overflow check if this goto needs it before jumping. |
| 5566 | DeferredStackCheck* deferred_stack_check = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5567 | new(zone()) DeferredStackCheck(this, instr); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5568 | ExternalReference stack_limit = |
| 5569 | ExternalReference::address_of_stack_limit(isolate()); |
| 5570 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 5571 | __ j(below, deferred_stack_check->entry()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5572 | EnsureSpaceForLazyDeopt(Deoptimizer::patch_size()); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5573 | __ bind(instr->done_label()); |
| 5574 | deferred_stack_check->SetExit(instr->done_label()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5575 | RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); |
| 5576 | // Don't record a deoptimization index for the safepoint here. |
| 5577 | // This will be done explicitly when emitting call and the safepoint in |
| 5578 | // the deferred code. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 5579 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5580 | } |
| 5581 | |
| 5582 | |
| 5583 | void LCodeGen::DoOsrEntry(LOsrEntry* instr) { |
| 5584 | // This is a pseudo-instruction that ensures that the environment here is |
| 5585 | // properly registered for deoptimization and records the assembler's PC |
| 5586 | // offset. |
| 5587 | LEnvironment* environment = instr->environment(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5588 | |
| 5589 | // If the environment were already registered, we would have no way of |
| 5590 | // backpatching it with the spill slot operands. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5591 | DCHECK(!environment->HasBeenRegistered()); |
Ben Murdoch | 2b4ba11 | 2012-01-20 14:57:15 +0000 | [diff] [blame] | 5592 | RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5593 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5594 | GenerateOsrPrologue(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 5595 | } |
| 5596 | |
| 5597 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5598 | void LCodeGen::DoForInPrepareMap(LForInPrepareMap* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5599 | DCHECK(ToRegister(instr->context()).is(esi)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5600 | __ cmp(eax, isolate()->factory()->undefined_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5601 | DeoptimizeIf(equal, instr, "undefined"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5602 | |
| 5603 | __ cmp(eax, isolate()->factory()->null_value()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5604 | DeoptimizeIf(equal, instr, "null"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5605 | |
| 5606 | __ test(eax, Immediate(kSmiTagMask)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5607 | DeoptimizeIf(zero, instr, "Smi"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5608 | |
| 5609 | STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 5610 | __ CmpObjectType(eax, LAST_JS_PROXY_TYPE, ecx); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5611 | DeoptimizeIf(below_equal, instr, "wrong instance type"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5612 | |
| 5613 | Label use_cache, call_runtime; |
| 5614 | __ CheckEnumCache(&call_runtime); |
| 5615 | |
| 5616 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 5617 | __ jmp(&use_cache, Label::kNear); |
| 5618 | |
| 5619 | // Get the set of properties to enumerate. |
| 5620 | __ bind(&call_runtime); |
| 5621 | __ push(eax); |
| 5622 | CallRuntime(Runtime::kGetPropertyNamesFast, 1, instr); |
| 5623 | |
| 5624 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 5625 | isolate()->factory()->meta_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5626 | DeoptimizeIf(not_equal, instr, "wrong map"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5627 | __ bind(&use_cache); |
| 5628 | } |
| 5629 | |
| 5630 | |
| 5631 | void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) { |
| 5632 | Register map = ToRegister(instr->map()); |
| 5633 | Register result = ToRegister(instr->result()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5634 | Label load_cache, done; |
| 5635 | __ EnumLength(result, map); |
| 5636 | __ cmp(result, Immediate(Smi::FromInt(0))); |
| 5637 | __ j(not_equal, &load_cache, Label::kNear); |
| 5638 | __ mov(result, isolate()->factory()->empty_fixed_array()); |
| 5639 | __ jmp(&done, Label::kNear); |
| 5640 | |
| 5641 | __ bind(&load_cache); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5642 | __ LoadInstanceDescriptors(map, result); |
| 5643 | __ mov(result, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5644 | FieldOperand(result, DescriptorArray::kEnumCacheOffset)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5645 | __ mov(result, |
| 5646 | FieldOperand(result, FixedArray::SizeFor(instr->idx()))); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5647 | __ bind(&done); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5648 | __ test(result, result); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5649 | DeoptimizeIf(equal, instr, "no cache"); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5650 | } |
| 5651 | |
| 5652 | |
| 5653 | void LCodeGen::DoCheckMapValue(LCheckMapValue* instr) { |
| 5654 | Register object = ToRegister(instr->value()); |
| 5655 | __ cmp(ToRegister(instr->map()), |
| 5656 | FieldOperand(object, HeapObject::kMapOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5657 | DeoptimizeIf(not_equal, instr, "wrong map"); |
| 5658 | } |
| 5659 | |
| 5660 | |
| 5661 | void LCodeGen::DoDeferredLoadMutableDouble(LLoadFieldByIndex* instr, |
| 5662 | Register object, |
| 5663 | Register index) { |
| 5664 | PushSafepointRegistersScope scope(this); |
| 5665 | __ push(object); |
| 5666 | __ push(index); |
| 5667 | __ xor_(esi, esi); |
| 5668 | __ CallRuntimeSaveDoubles(Runtime::kLoadMutableDouble); |
| 5669 | RecordSafepointWithRegisters( |
| 5670 | instr->pointer_map(), 2, Safepoint::kNoLazyDeopt); |
| 5671 | __ StoreToSafepointRegisterSlot(object, eax); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5672 | } |
| 5673 | |
| 5674 | |
| 5675 | void LCodeGen::DoLoadFieldByIndex(LLoadFieldByIndex* instr) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5676 | class DeferredLoadMutableDouble FINAL : public LDeferredCode { |
| 5677 | public: |
| 5678 | DeferredLoadMutableDouble(LCodeGen* codegen, |
| 5679 | LLoadFieldByIndex* instr, |
| 5680 | Register object, |
| 5681 | Register index) |
| 5682 | : LDeferredCode(codegen), |
| 5683 | instr_(instr), |
| 5684 | object_(object), |
| 5685 | index_(index) { |
| 5686 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5687 | void Generate() OVERRIDE { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5688 | codegen()->DoDeferredLoadMutableDouble(instr_, object_, index_); |
| 5689 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 5690 | LInstruction* instr() OVERRIDE { return instr_; } |
| 5691 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5692 | private: |
| 5693 | LLoadFieldByIndex* instr_; |
| 5694 | Register object_; |
| 5695 | Register index_; |
| 5696 | }; |
| 5697 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5698 | Register object = ToRegister(instr->object()); |
| 5699 | Register index = ToRegister(instr->index()); |
| 5700 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5701 | DeferredLoadMutableDouble* deferred; |
| 5702 | deferred = new(zone()) DeferredLoadMutableDouble( |
| 5703 | this, instr, object, index); |
| 5704 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5705 | Label out_of_object, done; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5706 | __ test(index, Immediate(Smi::FromInt(1))); |
| 5707 | __ j(not_zero, deferred->entry()); |
| 5708 | |
| 5709 | __ sar(index, 1); |
| 5710 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5711 | __ cmp(index, Immediate(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5712 | __ j(less, &out_of_object, Label::kNear); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5713 | __ mov(object, FieldOperand(object, |
| 5714 | index, |
| 5715 | times_half_pointer_size, |
| 5716 | JSObject::kHeaderSize)); |
| 5717 | __ jmp(&done, Label::kNear); |
| 5718 | |
| 5719 | __ bind(&out_of_object); |
| 5720 | __ mov(object, FieldOperand(object, JSObject::kPropertiesOffset)); |
| 5721 | __ neg(index); |
| 5722 | // Index is now equal to out of object property index plus 1. |
| 5723 | __ mov(object, FieldOperand(object, |
| 5724 | index, |
| 5725 | times_half_pointer_size, |
| 5726 | FixedArray::kHeaderSize - kPointerSize)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5727 | __ bind(deferred->exit()); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 5728 | __ bind(&done); |
| 5729 | } |
| 5730 | |
| 5731 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5732 | void LCodeGen::DoStoreFrameContext(LStoreFrameContext* instr) { |
| 5733 | Register context = ToRegister(instr->context()); |
| 5734 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), context); |
| 5735 | } |
| 5736 | |
| 5737 | |
| 5738 | void LCodeGen::DoAllocateBlockContext(LAllocateBlockContext* instr) { |
| 5739 | Handle<ScopeInfo> scope_info = instr->scope_info(); |
| 5740 | __ Push(scope_info); |
| 5741 | __ push(ToRegister(instr->function())); |
| 5742 | CallRuntime(Runtime::kPushBlockContext, 2, instr); |
| 5743 | RecordSafepoint(Safepoint::kNoLazyDeopt); |
| 5744 | } |
| 5745 | |
| 5746 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 5747 | #undef __ |
| 5748 | |
| 5749 | } } // namespace v8::internal |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 5750 | |
| 5751 | #endif // V8_TARGET_ARCH_IA32 |