Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #if V8_TARGET_ARCH_IA32 |
| 6 | |
| 7 | #include "src/ast/scopes.h" |
| 8 | #include "src/code-factory.h" |
| 9 | #include "src/code-stubs.h" |
| 10 | #include "src/codegen.h" |
| 11 | #include "src/debug/debug.h" |
| 12 | #include "src/full-codegen/full-codegen.h" |
| 13 | #include "src/ia32/frames-ia32.h" |
| 14 | #include "src/ic/ic.h" |
| 15 | #include "src/parsing/parser.h" |
| 16 | |
| 17 | namespace v8 { |
| 18 | namespace internal { |
| 19 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 20 | #define __ ACCESS_MASM(masm()) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 21 | |
| 22 | class JumpPatchSite BASE_EMBEDDED { |
| 23 | public: |
| 24 | explicit JumpPatchSite(MacroAssembler* masm) : masm_(masm) { |
| 25 | #ifdef DEBUG |
| 26 | info_emitted_ = false; |
| 27 | #endif |
| 28 | } |
| 29 | |
| 30 | ~JumpPatchSite() { |
| 31 | DCHECK(patch_site_.is_bound() == info_emitted_); |
| 32 | } |
| 33 | |
| 34 | void EmitJumpIfNotSmi(Register reg, |
| 35 | Label* target, |
| 36 | Label::Distance distance = Label::kFar) { |
| 37 | __ test(reg, Immediate(kSmiTagMask)); |
| 38 | EmitJump(not_carry, target, distance); // Always taken before patched. |
| 39 | } |
| 40 | |
| 41 | void EmitJumpIfSmi(Register reg, |
| 42 | Label* target, |
| 43 | Label::Distance distance = Label::kFar) { |
| 44 | __ test(reg, Immediate(kSmiTagMask)); |
| 45 | EmitJump(carry, target, distance); // Never taken before patched. |
| 46 | } |
| 47 | |
| 48 | void EmitPatchInfo() { |
| 49 | if (patch_site_.is_bound()) { |
| 50 | int delta_to_patch_site = masm_->SizeOfCodeGeneratedSince(&patch_site_); |
| 51 | DCHECK(is_uint8(delta_to_patch_site)); |
| 52 | __ test(eax, Immediate(delta_to_patch_site)); |
| 53 | #ifdef DEBUG |
| 54 | info_emitted_ = true; |
| 55 | #endif |
| 56 | } else { |
| 57 | __ nop(); // Signals no inlined code. |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | private: |
| 62 | // jc will be patched with jz, jnc will become jnz. |
| 63 | void EmitJump(Condition cc, Label* target, Label::Distance distance) { |
| 64 | DCHECK(!patch_site_.is_bound() && !info_emitted_); |
| 65 | DCHECK(cc == carry || cc == not_carry); |
| 66 | __ bind(&patch_site_); |
| 67 | __ j(cc, target, distance); |
| 68 | } |
| 69 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 70 | MacroAssembler* masm() { return masm_; } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 71 | MacroAssembler* masm_; |
| 72 | Label patch_site_; |
| 73 | #ifdef DEBUG |
| 74 | bool info_emitted_; |
| 75 | #endif |
| 76 | }; |
| 77 | |
| 78 | |
| 79 | // Generate code for a JS function. On entry to the function the receiver |
| 80 | // and arguments have been pushed on the stack left to right, with the |
| 81 | // return address on top of them. The actual argument count matches the |
| 82 | // formal parameter count expected by the function. |
| 83 | // |
| 84 | // The live registers are: |
| 85 | // o edi: the JS function object being called (i.e. ourselves) |
| 86 | // o edx: the new target value |
| 87 | // o esi: our context |
| 88 | // o ebp: our caller's frame pointer |
| 89 | // o esp: stack pointer (pointing to return address) |
| 90 | // |
| 91 | // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 92 | // frames-ia32.h for its layout. |
| 93 | void FullCodeGenerator::Generate() { |
| 94 | CompilationInfo* info = info_; |
| 95 | profiling_counter_ = isolate()->factory()->NewCell( |
| 96 | Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| 97 | SetFunctionPosition(literal()); |
| 98 | Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 99 | |
| 100 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 101 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 102 | if (FLAG_debug_code && info->ExpectsJSReceiverAsReceiver()) { |
| 103 | int receiver_offset = (info->scope()->num_parameters() + 1) * kPointerSize; |
| 104 | __ mov(ecx, Operand(esp, receiver_offset)); |
| 105 | __ AssertNotSmi(ecx); |
| 106 | __ CmpObjectType(ecx, FIRST_JS_RECEIVER_TYPE, ecx); |
| 107 | __ Assert(above_equal, kSloppyFunctionExpectsJSReceiverReceiver); |
| 108 | } |
| 109 | |
| 110 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 111 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 112 | // the frame (that is done below). |
| 113 | FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 114 | |
| 115 | info->set_prologue_offset(masm_->pc_offset()); |
| 116 | __ Prologue(info->GeneratePreagedPrologue()); |
| 117 | |
| 118 | { Comment cmnt(masm_, "[ Allocate locals"); |
| 119 | int locals_count = info->scope()->num_stack_slots(); |
| 120 | // Generators allocate locals, if any, in context slots. |
| 121 | DCHECK(!IsGeneratorFunction(literal()->kind()) || locals_count == 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 122 | OperandStackDepthIncrement(locals_count); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 123 | if (locals_count == 1) { |
| 124 | __ push(Immediate(isolate()->factory()->undefined_value())); |
| 125 | } else if (locals_count > 1) { |
| 126 | if (locals_count >= 128) { |
| 127 | Label ok; |
| 128 | __ mov(ecx, esp); |
| 129 | __ sub(ecx, Immediate(locals_count * kPointerSize)); |
| 130 | ExternalReference stack_limit = |
| 131 | ExternalReference::address_of_real_stack_limit(isolate()); |
| 132 | __ cmp(ecx, Operand::StaticVariable(stack_limit)); |
| 133 | __ j(above_equal, &ok, Label::kNear); |
| 134 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 135 | __ bind(&ok); |
| 136 | } |
| 137 | __ mov(eax, Immediate(isolate()->factory()->undefined_value())); |
| 138 | const int kMaxPushes = 32; |
| 139 | if (locals_count >= kMaxPushes) { |
| 140 | int loop_iterations = locals_count / kMaxPushes; |
| 141 | __ mov(ecx, loop_iterations); |
| 142 | Label loop_header; |
| 143 | __ bind(&loop_header); |
| 144 | // Do pushes. |
| 145 | for (int i = 0; i < kMaxPushes; i++) { |
| 146 | __ push(eax); |
| 147 | } |
| 148 | __ dec(ecx); |
| 149 | __ j(not_zero, &loop_header, Label::kNear); |
| 150 | } |
| 151 | int remaining = locals_count % kMaxPushes; |
| 152 | // Emit the remaining pushes. |
| 153 | for (int i = 0; i < remaining; i++) { |
| 154 | __ push(eax); |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | bool function_in_register = true; |
| 160 | |
| 161 | // Possibly allocate a local context. |
| 162 | if (info->scope()->num_heap_slots() > 0) { |
| 163 | Comment cmnt(masm_, "[ Allocate context"); |
| 164 | bool need_write_barrier = true; |
| 165 | int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 166 | // Argument to NewContext is the function, which is still in edi. |
| 167 | if (info->scope()->is_script_scope()) { |
| 168 | __ push(edi); |
| 169 | __ Push(info->scope()->GetScopeInfo(info->isolate())); |
| 170 | __ CallRuntime(Runtime::kNewScriptContext); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 171 | PrepareForBailoutForId(BailoutId::ScriptContext(), |
| 172 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 173 | // The new target value is not used, clobbering is safe. |
| 174 | DCHECK_NULL(info->scope()->new_target_var()); |
| 175 | } else { |
| 176 | if (info->scope()->new_target_var() != nullptr) { |
| 177 | __ push(edx); // Preserve new target. |
| 178 | } |
| 179 | if (slots <= FastNewContextStub::kMaximumSlots) { |
| 180 | FastNewContextStub stub(isolate(), slots); |
| 181 | __ CallStub(&stub); |
| 182 | // Result of FastNewContextStub is always in new space. |
| 183 | need_write_barrier = false; |
| 184 | } else { |
| 185 | __ push(edi); |
| 186 | __ CallRuntime(Runtime::kNewFunctionContext); |
| 187 | } |
| 188 | if (info->scope()->new_target_var() != nullptr) { |
| 189 | __ pop(edx); // Restore new target. |
| 190 | } |
| 191 | } |
| 192 | function_in_register = false; |
| 193 | // Context is returned in eax. It replaces the context passed to us. |
| 194 | // It's saved in the stack and kept live in esi. |
| 195 | __ mov(esi, eax); |
| 196 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), eax); |
| 197 | |
| 198 | // Copy parameters into context if necessary. |
| 199 | int num_parameters = info->scope()->num_parameters(); |
| 200 | int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; |
| 201 | for (int i = first_parameter; i < num_parameters; i++) { |
| 202 | Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i); |
| 203 | if (var->IsContextSlot()) { |
| 204 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 205 | (num_parameters - 1 - i) * kPointerSize; |
| 206 | // Load parameter from stack. |
| 207 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 208 | // Store it in the context. |
| 209 | int context_offset = Context::SlotOffset(var->index()); |
| 210 | __ mov(Operand(esi, context_offset), eax); |
| 211 | // Update the write barrier. This clobbers eax and ebx. |
| 212 | if (need_write_barrier) { |
| 213 | __ RecordWriteContextSlot(esi, |
| 214 | context_offset, |
| 215 | eax, |
| 216 | ebx, |
| 217 | kDontSaveFPRegs); |
| 218 | } else if (FLAG_debug_code) { |
| 219 | Label done; |
| 220 | __ JumpIfInNewSpace(esi, eax, &done, Label::kNear); |
| 221 | __ Abort(kExpectedNewSpaceObject); |
| 222 | __ bind(&done); |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | // Register holding this function and new target are both trashed in case we |
| 229 | // bailout here. But since that can happen only when new target is not used |
| 230 | // and we allocate a context, the value of |function_in_register| is correct. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 231 | PrepareForBailoutForId(BailoutId::FunctionContext(), |
| 232 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 233 | |
| 234 | // Possibly set up a local binding to the this function which is used in |
| 235 | // derived constructors with super calls. |
| 236 | Variable* this_function_var = scope()->this_function_var(); |
| 237 | if (this_function_var != nullptr) { |
| 238 | Comment cmnt(masm_, "[ This function"); |
| 239 | if (!function_in_register) { |
| 240 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 241 | // The write barrier clobbers register again, keep it marked as such. |
| 242 | } |
| 243 | SetVar(this_function_var, edi, ebx, ecx); |
| 244 | } |
| 245 | |
| 246 | // Possibly set up a local binding to the new target value. |
| 247 | Variable* new_target_var = scope()->new_target_var(); |
| 248 | if (new_target_var != nullptr) { |
| 249 | Comment cmnt(masm_, "[ new.target"); |
| 250 | SetVar(new_target_var, edx, ebx, ecx); |
| 251 | } |
| 252 | |
| 253 | // Possibly allocate RestParameters |
| 254 | int rest_index; |
| 255 | Variable* rest_param = scope()->rest_parameter(&rest_index); |
| 256 | if (rest_param) { |
| 257 | Comment cmnt(masm_, "[ Allocate rest parameter array"); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 258 | if (!function_in_register) { |
| 259 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 260 | } |
| 261 | FastNewRestParameterStub stub(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 262 | __ CallStub(&stub); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 263 | function_in_register = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 264 | SetVar(rest_param, eax, ebx, edx); |
| 265 | } |
| 266 | |
| 267 | Variable* arguments = scope()->arguments(); |
| 268 | if (arguments != NULL) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 269 | // Arguments object must be allocated after the context object, in |
| 270 | // case the "arguments" or ".arguments" variables are in the context. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 271 | Comment cmnt(masm_, "[ Allocate arguments object"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 272 | if (!function_in_register) { |
| 273 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 274 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 275 | if (is_strict(language_mode()) || !has_simple_parameters()) { |
| 276 | FastNewStrictArgumentsStub stub(isolate()); |
| 277 | __ CallStub(&stub); |
| 278 | } else if (literal()->has_duplicate_parameters()) { |
| 279 | __ Push(edi); |
| 280 | __ CallRuntime(Runtime::kNewSloppyArguments_Generic); |
| 281 | } else { |
| 282 | FastNewSloppyArgumentsStub stub(isolate()); |
| 283 | __ CallStub(&stub); |
| 284 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 285 | |
| 286 | SetVar(arguments, eax, ebx, edx); |
| 287 | } |
| 288 | |
| 289 | if (FLAG_trace) { |
| 290 | __ CallRuntime(Runtime::kTraceEnter); |
| 291 | } |
| 292 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 293 | // Visit the declarations and body. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 294 | PrepareForBailoutForId(BailoutId::FunctionEntry(), |
| 295 | BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 296 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 297 | Comment cmnt(masm_, "[ Declarations"); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 298 | VisitDeclarations(scope()->declarations()); |
| 299 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 300 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 301 | // Assert that the declarations do not use ICs. Otherwise the debugger |
| 302 | // won't be able to redirect a PC at an IC to the correct IC in newly |
| 303 | // recompiled code. |
| 304 | DCHECK_EQ(0, ic_total_count_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 305 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 306 | { |
| 307 | Comment cmnt(masm_, "[ Stack check"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 308 | PrepareForBailoutForId(BailoutId::Declarations(), |
| 309 | BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 310 | Label ok; |
| 311 | ExternalReference stack_limit = |
| 312 | ExternalReference::address_of_stack_limit(isolate()); |
| 313 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 314 | __ j(above_equal, &ok, Label::kNear); |
| 315 | __ call(isolate()->builtins()->StackCheck(), RelocInfo::CODE_TARGET); |
| 316 | __ bind(&ok); |
| 317 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 318 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 319 | { |
| 320 | Comment cmnt(masm_, "[ Body"); |
| 321 | DCHECK(loop_depth() == 0); |
| 322 | VisitStatements(literal()->body()); |
| 323 | DCHECK(loop_depth() == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | // Always emit a 'return undefined' in case control fell off the end of |
| 327 | // the body. |
| 328 | { Comment cmnt(masm_, "[ return <undefined>;"); |
| 329 | __ mov(eax, isolate()->factory()->undefined_value()); |
| 330 | EmitReturnSequence(); |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | |
| 335 | void FullCodeGenerator::ClearAccumulator() { |
| 336 | __ Move(eax, Immediate(Smi::FromInt(0))); |
| 337 | } |
| 338 | |
| 339 | |
| 340 | void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { |
| 341 | __ mov(ebx, Immediate(profiling_counter_)); |
| 342 | __ sub(FieldOperand(ebx, Cell::kValueOffset), |
| 343 | Immediate(Smi::FromInt(delta))); |
| 344 | } |
| 345 | |
| 346 | |
| 347 | void FullCodeGenerator::EmitProfilingCounterReset() { |
| 348 | int reset_value = FLAG_interrupt_budget; |
| 349 | __ mov(ebx, Immediate(profiling_counter_)); |
| 350 | __ mov(FieldOperand(ebx, Cell::kValueOffset), |
| 351 | Immediate(Smi::FromInt(reset_value))); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, |
| 356 | Label* back_edge_target) { |
| 357 | Comment cmnt(masm_, "[ Back edge bookkeeping"); |
| 358 | Label ok; |
| 359 | |
| 360 | DCHECK(back_edge_target->is_bound()); |
| 361 | int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
| 362 | int weight = Min(kMaxBackEdgeWeight, |
| 363 | Max(1, distance / kCodeSizeMultiplier)); |
| 364 | EmitProfilingCounterDecrement(weight); |
| 365 | __ j(positive, &ok, Label::kNear); |
| 366 | __ call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
| 367 | |
| 368 | // Record a mapping of this PC offset to the OSR id. This is used to find |
| 369 | // the AST id from the unoptimized code in order to use it as a key into |
| 370 | // the deoptimization input data found in the optimized code. |
| 371 | RecordBackEdge(stmt->OsrEntryId()); |
| 372 | |
| 373 | EmitProfilingCounterReset(); |
| 374 | |
| 375 | __ bind(&ok); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 376 | PrepareForBailoutForId(stmt->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 377 | // Record a mapping of the OSR id to this PC. This is used if the OSR |
| 378 | // entry becomes the target of a bailout. We don't expect it to be, but |
| 379 | // we want it to work if it is. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 380 | PrepareForBailoutForId(stmt->OsrEntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 381 | } |
| 382 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 383 | void FullCodeGenerator::EmitProfilingCounterHandlingForReturnSequence( |
| 384 | bool is_tail_call) { |
| 385 | // Pretend that the exit is a backwards jump to the entry. |
| 386 | int weight = 1; |
| 387 | if (info_->ShouldSelfOptimize()) { |
| 388 | weight = FLAG_interrupt_budget / FLAG_self_opt_count; |
| 389 | } else { |
| 390 | int distance = masm_->pc_offset(); |
| 391 | weight = Min(kMaxBackEdgeWeight, Max(1, distance / kCodeSizeMultiplier)); |
| 392 | } |
| 393 | EmitProfilingCounterDecrement(weight); |
| 394 | Label ok; |
| 395 | __ j(positive, &ok, Label::kNear); |
| 396 | // Don't need to save result register if we are going to do a tail call. |
| 397 | if (!is_tail_call) { |
| 398 | __ push(eax); |
| 399 | } |
| 400 | __ call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
| 401 | if (!is_tail_call) { |
| 402 | __ pop(eax); |
| 403 | } |
| 404 | EmitProfilingCounterReset(); |
| 405 | __ bind(&ok); |
| 406 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 407 | |
| 408 | void FullCodeGenerator::EmitReturnSequence() { |
| 409 | Comment cmnt(masm_, "[ Return sequence"); |
| 410 | if (return_label_.is_bound()) { |
| 411 | __ jmp(&return_label_); |
| 412 | } else { |
| 413 | // Common return label |
| 414 | __ bind(&return_label_); |
| 415 | if (FLAG_trace) { |
| 416 | __ push(eax); |
| 417 | __ CallRuntime(Runtime::kTraceExit); |
| 418 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 419 | EmitProfilingCounterHandlingForReturnSequence(false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 420 | |
| 421 | SetReturnPosition(literal()); |
| 422 | __ leave(); |
| 423 | |
| 424 | int arg_count = info_->scope()->num_parameters() + 1; |
| 425 | int arguments_bytes = arg_count * kPointerSize; |
| 426 | __ Ret(arguments_bytes, ecx); |
| 427 | } |
| 428 | } |
| 429 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 430 | void FullCodeGenerator::RestoreContext() { |
| 431 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 432 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 433 | |
| 434 | void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { |
| 435 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 436 | MemOperand operand = codegen()->VarOperand(var, result_register()); |
| 437 | // Memory operands can be pushed directly. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 438 | codegen()->PushOperand(operand); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | |
| 442 | void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const { |
| 443 | UNREACHABLE(); // Not used on IA32. |
| 444 | } |
| 445 | |
| 446 | |
| 447 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 448 | Heap::RootListIndex index) const { |
| 449 | UNREACHABLE(); // Not used on IA32. |
| 450 | } |
| 451 | |
| 452 | |
| 453 | void FullCodeGenerator::StackValueContext::Plug( |
| 454 | Heap::RootListIndex index) const { |
| 455 | UNREACHABLE(); // Not used on IA32. |
| 456 | } |
| 457 | |
| 458 | |
| 459 | void FullCodeGenerator::TestContext::Plug(Heap::RootListIndex index) const { |
| 460 | UNREACHABLE(); // Not used on IA32. |
| 461 | } |
| 462 | |
| 463 | |
| 464 | void FullCodeGenerator::EffectContext::Plug(Handle<Object> lit) const { |
| 465 | } |
| 466 | |
| 467 | |
| 468 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 469 | Handle<Object> lit) const { |
| 470 | if (lit->IsSmi()) { |
| 471 | __ SafeMove(result_register(), Immediate(lit)); |
| 472 | } else { |
| 473 | __ Move(result_register(), Immediate(lit)); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | |
| 478 | void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 479 | codegen()->OperandStackDepthIncrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 480 | if (lit->IsSmi()) { |
| 481 | __ SafePush(Immediate(lit)); |
| 482 | } else { |
| 483 | __ push(Immediate(lit)); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | |
| 488 | void FullCodeGenerator::TestContext::Plug(Handle<Object> lit) const { |
| 489 | codegen()->PrepareForBailoutBeforeSplit(condition(), |
| 490 | true, |
| 491 | true_label_, |
| 492 | false_label_); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 493 | DCHECK(lit->IsNull(isolate()) || lit->IsUndefined(isolate()) || |
| 494 | !lit->IsUndetectable()); |
| 495 | if (lit->IsUndefined(isolate()) || lit->IsNull(isolate()) || |
| 496 | lit->IsFalse(isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 497 | if (false_label_ != fall_through_) __ jmp(false_label_); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 498 | } else if (lit->IsTrue(isolate()) || lit->IsJSObject()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 499 | if (true_label_ != fall_through_) __ jmp(true_label_); |
| 500 | } else if (lit->IsString()) { |
| 501 | if (String::cast(*lit)->length() == 0) { |
| 502 | if (false_label_ != fall_through_) __ jmp(false_label_); |
| 503 | } else { |
| 504 | if (true_label_ != fall_through_) __ jmp(true_label_); |
| 505 | } |
| 506 | } else if (lit->IsSmi()) { |
| 507 | if (Smi::cast(*lit)->value() == 0) { |
| 508 | if (false_label_ != fall_through_) __ jmp(false_label_); |
| 509 | } else { |
| 510 | if (true_label_ != fall_through_) __ jmp(true_label_); |
| 511 | } |
| 512 | } else { |
| 513 | // For simplicity we always test the accumulator register. |
| 514 | __ mov(result_register(), lit); |
| 515 | codegen()->DoTest(this); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 520 | void FullCodeGenerator::StackValueContext::DropAndPlug(int count, |
| 521 | Register reg) const { |
| 522 | DCHECK(count > 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 523 | if (count > 1) codegen()->DropOperands(count - 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 524 | __ mov(Operand(esp, 0), reg); |
| 525 | } |
| 526 | |
| 527 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 528 | void FullCodeGenerator::EffectContext::Plug(Label* materialize_true, |
| 529 | Label* materialize_false) const { |
| 530 | DCHECK(materialize_true == materialize_false); |
| 531 | __ bind(materialize_true); |
| 532 | } |
| 533 | |
| 534 | |
| 535 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 536 | Label* materialize_true, |
| 537 | Label* materialize_false) const { |
| 538 | Label done; |
| 539 | __ bind(materialize_true); |
| 540 | __ mov(result_register(), isolate()->factory()->true_value()); |
| 541 | __ jmp(&done, Label::kNear); |
| 542 | __ bind(materialize_false); |
| 543 | __ mov(result_register(), isolate()->factory()->false_value()); |
| 544 | __ bind(&done); |
| 545 | } |
| 546 | |
| 547 | |
| 548 | void FullCodeGenerator::StackValueContext::Plug( |
| 549 | Label* materialize_true, |
| 550 | Label* materialize_false) const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 551 | codegen()->OperandStackDepthIncrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 552 | Label done; |
| 553 | __ bind(materialize_true); |
| 554 | __ push(Immediate(isolate()->factory()->true_value())); |
| 555 | __ jmp(&done, Label::kNear); |
| 556 | __ bind(materialize_false); |
| 557 | __ push(Immediate(isolate()->factory()->false_value())); |
| 558 | __ bind(&done); |
| 559 | } |
| 560 | |
| 561 | |
| 562 | void FullCodeGenerator::TestContext::Plug(Label* materialize_true, |
| 563 | Label* materialize_false) const { |
| 564 | DCHECK(materialize_true == true_label_); |
| 565 | DCHECK(materialize_false == false_label_); |
| 566 | } |
| 567 | |
| 568 | |
| 569 | void FullCodeGenerator::AccumulatorValueContext::Plug(bool flag) const { |
| 570 | Handle<Object> value = flag |
| 571 | ? isolate()->factory()->true_value() |
| 572 | : isolate()->factory()->false_value(); |
| 573 | __ mov(result_register(), value); |
| 574 | } |
| 575 | |
| 576 | |
| 577 | void FullCodeGenerator::StackValueContext::Plug(bool flag) const { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 578 | codegen()->OperandStackDepthIncrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 579 | Handle<Object> value = flag |
| 580 | ? isolate()->factory()->true_value() |
| 581 | : isolate()->factory()->false_value(); |
| 582 | __ push(Immediate(value)); |
| 583 | } |
| 584 | |
| 585 | |
| 586 | void FullCodeGenerator::TestContext::Plug(bool flag) const { |
| 587 | codegen()->PrepareForBailoutBeforeSplit(condition(), |
| 588 | true, |
| 589 | true_label_, |
| 590 | false_label_); |
| 591 | if (flag) { |
| 592 | if (true_label_ != fall_through_) __ jmp(true_label_); |
| 593 | } else { |
| 594 | if (false_label_ != fall_through_) __ jmp(false_label_); |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | |
| 599 | void FullCodeGenerator::DoTest(Expression* condition, |
| 600 | Label* if_true, |
| 601 | Label* if_false, |
| 602 | Label* fall_through) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 603 | Handle<Code> ic = ToBooleanICStub::GetUninitialized(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 604 | CallIC(ic, condition->test_id()); |
| 605 | __ CompareRoot(result_register(), Heap::kTrueValueRootIndex); |
| 606 | Split(equal, if_true, if_false, fall_through); |
| 607 | } |
| 608 | |
| 609 | |
| 610 | void FullCodeGenerator::Split(Condition cc, |
| 611 | Label* if_true, |
| 612 | Label* if_false, |
| 613 | Label* fall_through) { |
| 614 | if (if_false == fall_through) { |
| 615 | __ j(cc, if_true); |
| 616 | } else if (if_true == fall_through) { |
| 617 | __ j(NegateCondition(cc), if_false); |
| 618 | } else { |
| 619 | __ j(cc, if_true); |
| 620 | __ jmp(if_false); |
| 621 | } |
| 622 | } |
| 623 | |
| 624 | |
| 625 | MemOperand FullCodeGenerator::StackOperand(Variable* var) { |
| 626 | DCHECK(var->IsStackAllocated()); |
| 627 | // Offset is negative because higher indexes are at lower addresses. |
| 628 | int offset = -var->index() * kPointerSize; |
| 629 | // Adjust by a (parameter or local) base offset. |
| 630 | if (var->IsParameter()) { |
| 631 | offset += (info_->scope()->num_parameters() + 1) * kPointerSize; |
| 632 | } else { |
| 633 | offset += JavaScriptFrameConstants::kLocal0Offset; |
| 634 | } |
| 635 | return Operand(ebp, offset); |
| 636 | } |
| 637 | |
| 638 | |
| 639 | MemOperand FullCodeGenerator::VarOperand(Variable* var, Register scratch) { |
| 640 | DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
| 641 | if (var->IsContextSlot()) { |
| 642 | int context_chain_length = scope()->ContextChainLength(var->scope()); |
| 643 | __ LoadContext(scratch, context_chain_length); |
| 644 | return ContextOperand(scratch, var->index()); |
| 645 | } else { |
| 646 | return StackOperand(var); |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | |
| 651 | void FullCodeGenerator::GetVar(Register dest, Variable* var) { |
| 652 | DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
| 653 | MemOperand location = VarOperand(var, dest); |
| 654 | __ mov(dest, location); |
| 655 | } |
| 656 | |
| 657 | |
| 658 | void FullCodeGenerator::SetVar(Variable* var, |
| 659 | Register src, |
| 660 | Register scratch0, |
| 661 | Register scratch1) { |
| 662 | DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
| 663 | DCHECK(!scratch0.is(src)); |
| 664 | DCHECK(!scratch0.is(scratch1)); |
| 665 | DCHECK(!scratch1.is(src)); |
| 666 | MemOperand location = VarOperand(var, scratch0); |
| 667 | __ mov(location, src); |
| 668 | |
| 669 | // Emit the write barrier code if the location is in the heap. |
| 670 | if (var->IsContextSlot()) { |
| 671 | int offset = Context::SlotOffset(var->index()); |
| 672 | DCHECK(!scratch0.is(esi) && !src.is(esi) && !scratch1.is(esi)); |
| 673 | __ RecordWriteContextSlot(scratch0, offset, src, scratch1, kDontSaveFPRegs); |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | |
| 678 | void FullCodeGenerator::PrepareForBailoutBeforeSplit(Expression* expr, |
| 679 | bool should_normalize, |
| 680 | Label* if_true, |
| 681 | Label* if_false) { |
| 682 | // Only prepare for bailouts before splits if we're in a test |
| 683 | // context. Otherwise, we let the Visit function deal with the |
| 684 | // preparation to avoid preparing with the same AST id twice. |
| 685 | if (!context()->IsTest()) return; |
| 686 | |
| 687 | Label skip; |
| 688 | if (should_normalize) __ jmp(&skip, Label::kNear); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 689 | PrepareForBailout(expr, BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 690 | if (should_normalize) { |
| 691 | __ cmp(eax, isolate()->factory()->true_value()); |
| 692 | Split(equal, if_true, if_false, NULL); |
| 693 | __ bind(&skip); |
| 694 | } |
| 695 | } |
| 696 | |
| 697 | |
| 698 | void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { |
| 699 | // The variable in the declaration always resides in the current context. |
| 700 | DCHECK_EQ(0, scope()->ContextChainLength(variable->scope())); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 701 | if (FLAG_debug_code) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 702 | // Check that we're not inside a with or catch context. |
| 703 | __ mov(ebx, FieldOperand(esi, HeapObject::kMapOffset)); |
| 704 | __ cmp(ebx, isolate()->factory()->with_context_map()); |
| 705 | __ Check(not_equal, kDeclarationInWithContext); |
| 706 | __ cmp(ebx, isolate()->factory()->catch_context_map()); |
| 707 | __ Check(not_equal, kDeclarationInCatchContext); |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | |
| 712 | void FullCodeGenerator::VisitVariableDeclaration( |
| 713 | VariableDeclaration* declaration) { |
| 714 | // If it was not possible to allocate the variable at compile time, we |
| 715 | // need to "declare" it at runtime to make sure it actually exists in the |
| 716 | // local context. |
| 717 | VariableProxy* proxy = declaration->proxy(); |
| 718 | VariableMode mode = declaration->mode(); |
| 719 | Variable* variable = proxy->var(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 720 | bool hole_init = mode == LET || mode == CONST; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 721 | switch (variable->location()) { |
| 722 | case VariableLocation::GLOBAL: |
| 723 | case VariableLocation::UNALLOCATED: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 724 | DCHECK(!variable->binding_needs_init()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 725 | globals_->Add(variable->name(), zone()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 726 | globals_->Add(isolate()->factory()->undefined_value(), zone()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 727 | break; |
| 728 | |
| 729 | case VariableLocation::PARAMETER: |
| 730 | case VariableLocation::LOCAL: |
| 731 | if (hole_init) { |
| 732 | Comment cmnt(masm_, "[ VariableDeclaration"); |
| 733 | __ mov(StackOperand(variable), |
| 734 | Immediate(isolate()->factory()->the_hole_value())); |
| 735 | } |
| 736 | break; |
| 737 | |
| 738 | case VariableLocation::CONTEXT: |
| 739 | if (hole_init) { |
| 740 | Comment cmnt(masm_, "[ VariableDeclaration"); |
| 741 | EmitDebugCheckDeclarationContext(variable); |
| 742 | __ mov(ContextOperand(esi, variable->index()), |
| 743 | Immediate(isolate()->factory()->the_hole_value())); |
| 744 | // No write barrier since the hole value is in old space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 745 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 746 | } |
| 747 | break; |
| 748 | |
| 749 | case VariableLocation::LOOKUP: { |
| 750 | Comment cmnt(masm_, "[ VariableDeclaration"); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 751 | DCHECK_EQ(VAR, mode); |
| 752 | DCHECK(!hole_init); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 753 | __ push(Immediate(variable->name())); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 754 | __ CallRuntime(Runtime::kDeclareEvalVar); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 755 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 756 | break; |
| 757 | } |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | |
| 762 | void FullCodeGenerator::VisitFunctionDeclaration( |
| 763 | FunctionDeclaration* declaration) { |
| 764 | VariableProxy* proxy = declaration->proxy(); |
| 765 | Variable* variable = proxy->var(); |
| 766 | switch (variable->location()) { |
| 767 | case VariableLocation::GLOBAL: |
| 768 | case VariableLocation::UNALLOCATED: { |
| 769 | globals_->Add(variable->name(), zone()); |
| 770 | Handle<SharedFunctionInfo> function = |
| 771 | Compiler::GetSharedFunctionInfo(declaration->fun(), script(), info_); |
| 772 | // Check for stack-overflow exception. |
| 773 | if (function.is_null()) return SetStackOverflow(); |
| 774 | globals_->Add(function, zone()); |
| 775 | break; |
| 776 | } |
| 777 | |
| 778 | case VariableLocation::PARAMETER: |
| 779 | case VariableLocation::LOCAL: { |
| 780 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
| 781 | VisitForAccumulatorValue(declaration->fun()); |
| 782 | __ mov(StackOperand(variable), result_register()); |
| 783 | break; |
| 784 | } |
| 785 | |
| 786 | case VariableLocation::CONTEXT: { |
| 787 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
| 788 | EmitDebugCheckDeclarationContext(variable); |
| 789 | VisitForAccumulatorValue(declaration->fun()); |
| 790 | __ mov(ContextOperand(esi, variable->index()), result_register()); |
| 791 | // We know that we have written a function, which is not a smi. |
| 792 | __ RecordWriteContextSlot(esi, |
| 793 | Context::SlotOffset(variable->index()), |
| 794 | result_register(), |
| 795 | ecx, |
| 796 | kDontSaveFPRegs, |
| 797 | EMIT_REMEMBERED_SET, |
| 798 | OMIT_SMI_CHECK); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 799 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 800 | break; |
| 801 | } |
| 802 | |
| 803 | case VariableLocation::LOOKUP: { |
| 804 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 805 | PushOperand(variable->name()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 806 | VisitForStackValue(declaration->fun()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 807 | CallRuntimeWithOperands(Runtime::kDeclareEvalFunction); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 808 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 809 | break; |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | |
| 815 | void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
| 816 | // Call the runtime to declare the globals. |
| 817 | __ Push(pairs); |
| 818 | __ Push(Smi::FromInt(DeclareGlobalsFlags())); |
| 819 | __ CallRuntime(Runtime::kDeclareGlobals); |
| 820 | // Return value is ignored. |
| 821 | } |
| 822 | |
| 823 | |
| 824 | void FullCodeGenerator::DeclareModules(Handle<FixedArray> descriptions) { |
| 825 | // Call the runtime to declare the modules. |
| 826 | __ Push(descriptions); |
| 827 | __ CallRuntime(Runtime::kDeclareModules); |
| 828 | // Return value is ignored. |
| 829 | } |
| 830 | |
| 831 | |
| 832 | void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) { |
| 833 | Comment cmnt(masm_, "[ SwitchStatement"); |
| 834 | Breakable nested_statement(this, stmt); |
| 835 | SetStatementPosition(stmt); |
| 836 | |
| 837 | // Keep the switch value on the stack until a case matches. |
| 838 | VisitForStackValue(stmt->tag()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 839 | PrepareForBailoutForId(stmt->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 840 | |
| 841 | ZoneList<CaseClause*>* clauses = stmt->cases(); |
| 842 | CaseClause* default_clause = NULL; // Can occur anywhere in the list. |
| 843 | |
| 844 | Label next_test; // Recycled for each test. |
| 845 | // Compile all the tests with branches to their bodies. |
| 846 | for (int i = 0; i < clauses->length(); i++) { |
| 847 | CaseClause* clause = clauses->at(i); |
| 848 | clause->body_target()->Unuse(); |
| 849 | |
| 850 | // The default is not a test, but remember it as final fall through. |
| 851 | if (clause->is_default()) { |
| 852 | default_clause = clause; |
| 853 | continue; |
| 854 | } |
| 855 | |
| 856 | Comment cmnt(masm_, "[ Case comparison"); |
| 857 | __ bind(&next_test); |
| 858 | next_test.Unuse(); |
| 859 | |
| 860 | // Compile the label expression. |
| 861 | VisitForAccumulatorValue(clause->label()); |
| 862 | |
| 863 | // Perform the comparison as if via '==='. |
| 864 | __ mov(edx, Operand(esp, 0)); // Switch value. |
| 865 | bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); |
| 866 | JumpPatchSite patch_site(masm_); |
| 867 | if (inline_smi_code) { |
| 868 | Label slow_case; |
| 869 | __ mov(ecx, edx); |
| 870 | __ or_(ecx, eax); |
| 871 | patch_site.EmitJumpIfNotSmi(ecx, &slow_case, Label::kNear); |
| 872 | |
| 873 | __ cmp(edx, eax); |
| 874 | __ j(not_equal, &next_test); |
| 875 | __ Drop(1); // Switch value is no longer needed. |
| 876 | __ jmp(clause->body_target()); |
| 877 | __ bind(&slow_case); |
| 878 | } |
| 879 | |
| 880 | SetExpressionPosition(clause); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 881 | Handle<Code> ic = |
| 882 | CodeFactory::CompareIC(isolate(), Token::EQ_STRICT).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 883 | CallIC(ic, clause->CompareId()); |
| 884 | patch_site.EmitPatchInfo(); |
| 885 | |
| 886 | Label skip; |
| 887 | __ jmp(&skip, Label::kNear); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 888 | PrepareForBailout(clause, BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 889 | __ cmp(eax, isolate()->factory()->true_value()); |
| 890 | __ j(not_equal, &next_test); |
| 891 | __ Drop(1); |
| 892 | __ jmp(clause->body_target()); |
| 893 | __ bind(&skip); |
| 894 | |
| 895 | __ test(eax, eax); |
| 896 | __ j(not_equal, &next_test); |
| 897 | __ Drop(1); // Switch value is no longer needed. |
| 898 | __ jmp(clause->body_target()); |
| 899 | } |
| 900 | |
| 901 | // Discard the test value and jump to the default if present, otherwise to |
| 902 | // the end of the statement. |
| 903 | __ bind(&next_test); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 904 | DropOperands(1); // Switch value is no longer needed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 905 | if (default_clause == NULL) { |
| 906 | __ jmp(nested_statement.break_label()); |
| 907 | } else { |
| 908 | __ jmp(default_clause->body_target()); |
| 909 | } |
| 910 | |
| 911 | // Compile all the case bodies. |
| 912 | for (int i = 0; i < clauses->length(); i++) { |
| 913 | Comment cmnt(masm_, "[ Case body"); |
| 914 | CaseClause* clause = clauses->at(i); |
| 915 | __ bind(clause->body_target()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 916 | PrepareForBailoutForId(clause->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 917 | VisitStatements(clause->statements()); |
| 918 | } |
| 919 | |
| 920 | __ bind(nested_statement.break_label()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 921 | PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | |
| 925 | void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { |
| 926 | Comment cmnt(masm_, "[ ForInStatement"); |
| 927 | SetStatementPosition(stmt, SKIP_BREAK); |
| 928 | |
| 929 | FeedbackVectorSlot slot = stmt->ForInFeedbackSlot(); |
| 930 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 931 | // Get the object to enumerate over. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 932 | SetExpressionAsStatementPosition(stmt->enumerable()); |
| 933 | VisitForAccumulatorValue(stmt->enumerable()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 934 | OperandStackDepthIncrement(5); |
| 935 | |
| 936 | Label loop, exit; |
| 937 | Iteration loop_statement(this, stmt); |
| 938 | increment_loop_depth(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 939 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 940 | // If the object is null or undefined, skip over the loop, otherwise convert |
| 941 | // it to a JS receiver. See ECMA-262 version 5, section 12.6.4. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 942 | Label convert, done_convert; |
| 943 | __ JumpIfSmi(eax, &convert, Label::kNear); |
| 944 | __ CmpObjectType(eax, FIRST_JS_RECEIVER_TYPE, ecx); |
| 945 | __ j(above_equal, &done_convert, Label::kNear); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 946 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 947 | __ j(equal, &exit); |
| 948 | __ cmp(eax, isolate()->factory()->null_value()); |
| 949 | __ j(equal, &exit); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 950 | __ bind(&convert); |
| 951 | ToObjectStub stub(isolate()); |
| 952 | __ CallStub(&stub); |
| 953 | __ bind(&done_convert); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 954 | PrepareForBailoutForId(stmt->ToObjectId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 955 | __ push(eax); |
| 956 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 957 | // Check cache validity in generated code. If we cannot guarantee cache |
| 958 | // validity, call the runtime system to check cache validity or get the |
| 959 | // property names in a fixed array. Note: Proxies never have an enum cache, |
| 960 | // so will always take the slow path. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 961 | Label call_runtime, use_cache, fixed_array; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 962 | __ CheckEnumCache(&call_runtime); |
| 963 | |
| 964 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 965 | __ jmp(&use_cache, Label::kNear); |
| 966 | |
| 967 | // Get the set of properties to enumerate. |
| 968 | __ bind(&call_runtime); |
| 969 | __ push(eax); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 970 | __ CallRuntime(Runtime::kForInEnumerate); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 971 | PrepareForBailoutForId(stmt->EnumId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 972 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 973 | isolate()->factory()->meta_map()); |
| 974 | __ j(not_equal, &fixed_array); |
| 975 | |
| 976 | |
| 977 | // We got a map in register eax. Get the enumeration cache from it. |
| 978 | Label no_descriptors; |
| 979 | __ bind(&use_cache); |
| 980 | |
| 981 | __ EnumLength(edx, eax); |
| 982 | __ cmp(edx, Immediate(Smi::FromInt(0))); |
| 983 | __ j(equal, &no_descriptors); |
| 984 | |
| 985 | __ LoadInstanceDescriptors(eax, ecx); |
| 986 | __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheOffset)); |
| 987 | __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumCacheBridgeCacheOffset)); |
| 988 | |
| 989 | // Set up the four remaining stack slots. |
| 990 | __ push(eax); // Map. |
| 991 | __ push(ecx); // Enumeration cache. |
| 992 | __ push(edx); // Number of valid entries for the map in the enum cache. |
| 993 | __ push(Immediate(Smi::FromInt(0))); // Initial index. |
| 994 | __ jmp(&loop); |
| 995 | |
| 996 | __ bind(&no_descriptors); |
| 997 | __ add(esp, Immediate(kPointerSize)); |
| 998 | __ jmp(&exit); |
| 999 | |
| 1000 | // We got a fixed array in register eax. Iterate through that. |
| 1001 | __ bind(&fixed_array); |
| 1002 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1003 | __ push(Immediate(Smi::FromInt(1))); // Smi(1) indicates slow check |
| 1004 | __ push(eax); // Array |
| 1005 | __ mov(eax, FieldOperand(eax, FixedArray::kLengthOffset)); |
| 1006 | __ push(eax); // Fixed array length (as smi). |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1007 | PrepareForBailoutForId(stmt->PrepareId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1008 | __ push(Immediate(Smi::FromInt(0))); // Initial index. |
| 1009 | |
| 1010 | // Generate code for doing the condition check. |
| 1011 | __ bind(&loop); |
| 1012 | SetExpressionAsStatementPosition(stmt->each()); |
| 1013 | |
| 1014 | __ mov(eax, Operand(esp, 0 * kPointerSize)); // Get the current index. |
| 1015 | __ cmp(eax, Operand(esp, 1 * kPointerSize)); // Compare to the array length. |
| 1016 | __ j(above_equal, loop_statement.break_label()); |
| 1017 | |
| 1018 | // Get the current entry of the array into register ebx. |
| 1019 | __ mov(ebx, Operand(esp, 2 * kPointerSize)); |
| 1020 | __ mov(ebx, FieldOperand(ebx, eax, times_2, FixedArray::kHeaderSize)); |
| 1021 | |
| 1022 | // Get the expected map from the stack or a smi in the |
| 1023 | // permanent slow case into register edx. |
| 1024 | __ mov(edx, Operand(esp, 3 * kPointerSize)); |
| 1025 | |
| 1026 | // Check if the expected map still matches that of the enumerable. |
| 1027 | // If not, we may have to filter the key. |
| 1028 | Label update_each; |
| 1029 | __ mov(ecx, Operand(esp, 4 * kPointerSize)); |
| 1030 | __ cmp(edx, FieldOperand(ecx, HeapObject::kMapOffset)); |
| 1031 | __ j(equal, &update_each, Label::kNear); |
| 1032 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1033 | // We need to filter the key, record slow-path here. |
| 1034 | int const vector_index = SmiFromSlot(slot)->value(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1035 | __ EmitLoadTypeFeedbackVector(edx); |
| 1036 | __ mov(FieldOperand(edx, FixedArray::OffsetOfElementAt(vector_index)), |
| 1037 | Immediate(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
| 1038 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1039 | // Convert the entry to a string or null if it isn't a property |
| 1040 | // anymore. If the property has been removed while iterating, we |
| 1041 | // just skip it. |
| 1042 | __ push(ecx); // Enumerable. |
| 1043 | __ push(ebx); // Current entry. |
| 1044 | __ CallRuntime(Runtime::kForInFilter); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1045 | PrepareForBailoutForId(stmt->FilterId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1046 | __ cmp(eax, isolate()->factory()->undefined_value()); |
| 1047 | __ j(equal, loop_statement.continue_label()); |
| 1048 | __ mov(ebx, eax); |
| 1049 | |
| 1050 | // Update the 'each' property or variable from the possibly filtered |
| 1051 | // entry in register ebx. |
| 1052 | __ bind(&update_each); |
| 1053 | __ mov(result_register(), ebx); |
| 1054 | // Perform the assignment as if via '='. |
| 1055 | { EffectContext context(this); |
| 1056 | EmitAssignment(stmt->each(), stmt->EachFeedbackSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1057 | PrepareForBailoutForId(stmt->AssignmentId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1058 | } |
| 1059 | |
| 1060 | // Both Crankshaft and Turbofan expect BodyId to be right before stmt->body(). |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1061 | PrepareForBailoutForId(stmt->BodyId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1062 | // Generate code for the body of the loop. |
| 1063 | Visit(stmt->body()); |
| 1064 | |
| 1065 | // Generate code for going to the next element by incrementing the |
| 1066 | // index (smi) stored on top of the stack. |
| 1067 | __ bind(loop_statement.continue_label()); |
| 1068 | __ add(Operand(esp, 0 * kPointerSize), Immediate(Smi::FromInt(1))); |
| 1069 | |
| 1070 | EmitBackEdgeBookkeeping(stmt, &loop); |
| 1071 | __ jmp(&loop); |
| 1072 | |
| 1073 | // Remove the pointers stored on the stack. |
| 1074 | __ bind(loop_statement.break_label()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1075 | DropOperands(5); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1076 | |
| 1077 | // Exit and decrement the loop depth. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1078 | PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1079 | __ bind(&exit); |
| 1080 | decrement_loop_depth(); |
| 1081 | } |
| 1082 | |
| 1083 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1084 | void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, |
| 1085 | FeedbackVectorSlot slot) { |
| 1086 | DCHECK(NeedsHomeObject(initializer)); |
| 1087 | __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 1088 | __ mov(StoreDescriptor::NameRegister(), |
| 1089 | Immediate(isolate()->factory()->home_object_symbol())); |
| 1090 | __ mov(StoreDescriptor::ValueRegister(), Operand(esp, offset * kPointerSize)); |
| 1091 | EmitLoadStoreICSlot(slot); |
| 1092 | CallStoreIC(); |
| 1093 | } |
| 1094 | |
| 1095 | |
| 1096 | void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, |
| 1097 | int offset, |
| 1098 | FeedbackVectorSlot slot) { |
| 1099 | DCHECK(NeedsHomeObject(initializer)); |
| 1100 | __ mov(StoreDescriptor::ReceiverRegister(), eax); |
| 1101 | __ mov(StoreDescriptor::NameRegister(), |
| 1102 | Immediate(isolate()->factory()->home_object_symbol())); |
| 1103 | __ mov(StoreDescriptor::ValueRegister(), Operand(esp, offset * kPointerSize)); |
| 1104 | EmitLoadStoreICSlot(slot); |
| 1105 | CallStoreIC(); |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
| 1110 | TypeofMode typeof_mode, |
| 1111 | Label* slow) { |
| 1112 | Register context = esi; |
| 1113 | Register temp = edx; |
| 1114 | |
| 1115 | Scope* s = scope(); |
| 1116 | while (s != NULL) { |
| 1117 | if (s->num_heap_slots() > 0) { |
| 1118 | if (s->calls_sloppy_eval()) { |
| 1119 | // Check that extension is "the hole". |
| 1120 | __ JumpIfNotRoot(ContextOperand(context, Context::EXTENSION_INDEX), |
| 1121 | Heap::kTheHoleValueRootIndex, slow); |
| 1122 | } |
| 1123 | // Load next context in chain. |
| 1124 | __ mov(temp, ContextOperand(context, Context::PREVIOUS_INDEX)); |
| 1125 | // Walk the rest of the chain without clobbering esi. |
| 1126 | context = temp; |
| 1127 | } |
| 1128 | // If no outer scope calls eval, we do not need to check more |
| 1129 | // context extensions. If we have reached an eval scope, we check |
| 1130 | // all extensions from this point. |
| 1131 | if (!s->outer_scope_calls_sloppy_eval() || s->is_eval_scope()) break; |
| 1132 | s = s->outer_scope(); |
| 1133 | } |
| 1134 | |
| 1135 | if (s != NULL && s->is_eval_scope()) { |
| 1136 | // Loop up the context chain. There is no frame effect so it is |
| 1137 | // safe to use raw labels here. |
| 1138 | Label next, fast; |
| 1139 | if (!context.is(temp)) { |
| 1140 | __ mov(temp, context); |
| 1141 | } |
| 1142 | __ bind(&next); |
| 1143 | // Terminate at native context. |
| 1144 | __ cmp(FieldOperand(temp, HeapObject::kMapOffset), |
| 1145 | Immediate(isolate()->factory()->native_context_map())); |
| 1146 | __ j(equal, &fast, Label::kNear); |
| 1147 | // Check that extension is "the hole". |
| 1148 | __ JumpIfNotRoot(ContextOperand(temp, Context::EXTENSION_INDEX), |
| 1149 | Heap::kTheHoleValueRootIndex, slow); |
| 1150 | // Load next context in chain. |
| 1151 | __ mov(temp, ContextOperand(temp, Context::PREVIOUS_INDEX)); |
| 1152 | __ jmp(&next); |
| 1153 | __ bind(&fast); |
| 1154 | } |
| 1155 | |
| 1156 | // All extension objects were empty and it is safe to use a normal global |
| 1157 | // load machinery. |
| 1158 | EmitGlobalVariableLoad(proxy, typeof_mode); |
| 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var, |
| 1163 | Label* slow) { |
| 1164 | DCHECK(var->IsContextSlot()); |
| 1165 | Register context = esi; |
| 1166 | Register temp = ebx; |
| 1167 | |
| 1168 | for (Scope* s = scope(); s != var->scope(); s = s->outer_scope()) { |
| 1169 | if (s->num_heap_slots() > 0) { |
| 1170 | if (s->calls_sloppy_eval()) { |
| 1171 | // Check that extension is "the hole". |
| 1172 | __ JumpIfNotRoot(ContextOperand(context, Context::EXTENSION_INDEX), |
| 1173 | Heap::kTheHoleValueRootIndex, slow); |
| 1174 | } |
| 1175 | __ mov(temp, ContextOperand(context, Context::PREVIOUS_INDEX)); |
| 1176 | // Walk the rest of the chain without clobbering esi. |
| 1177 | context = temp; |
| 1178 | } |
| 1179 | } |
| 1180 | // Check that last extension is "the hole". |
| 1181 | __ JumpIfNotRoot(ContextOperand(context, Context::EXTENSION_INDEX), |
| 1182 | Heap::kTheHoleValueRootIndex, slow); |
| 1183 | |
| 1184 | // This function is used only for loads, not stores, so it's safe to |
| 1185 | // return an esi-based operand (the write barrier cannot be allowed to |
| 1186 | // destroy the esi register). |
| 1187 | return ContextOperand(context, var->index()); |
| 1188 | } |
| 1189 | |
| 1190 | |
| 1191 | void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy, |
| 1192 | TypeofMode typeof_mode, |
| 1193 | Label* slow, Label* done) { |
| 1194 | // Generate fast-case code for variables that might be shadowed by |
| 1195 | // eval-introduced variables. Eval is used a lot without |
| 1196 | // introducing variables. In those cases, we do not want to |
| 1197 | // perform a runtime call for all variables in the scope |
| 1198 | // containing the eval. |
| 1199 | Variable* var = proxy->var(); |
| 1200 | if (var->mode() == DYNAMIC_GLOBAL) { |
| 1201 | EmitLoadGlobalCheckExtensions(proxy, typeof_mode, slow); |
| 1202 | __ jmp(done); |
| 1203 | } else if (var->mode() == DYNAMIC_LOCAL) { |
| 1204 | Variable* local = var->local_if_not_shadowed(); |
| 1205 | __ mov(eax, ContextSlotOperandCheckExtensions(local, slow)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1206 | if (local->mode() == LET || local->mode() == CONST) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1207 | __ cmp(eax, isolate()->factory()->the_hole_value()); |
| 1208 | __ j(not_equal, done); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1209 | __ push(Immediate(var->name())); |
| 1210 | __ CallRuntime(Runtime::kThrowReferenceError); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1211 | } |
| 1212 | __ jmp(done); |
| 1213 | } |
| 1214 | } |
| 1215 | |
| 1216 | |
| 1217 | void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy, |
| 1218 | TypeofMode typeof_mode) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1219 | #ifdef DEBUG |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1220 | Variable* var = proxy->var(); |
| 1221 | DCHECK(var->IsUnallocatedOrGlobalSlot() || |
| 1222 | (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1223 | #endif |
| 1224 | __ mov(LoadGlobalDescriptor::SlotRegister(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1225 | Immediate(SmiFromSlot(proxy->VariableFeedbackSlot()))); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1226 | CallLoadGlobalIC(typeof_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1227 | } |
| 1228 | |
| 1229 | |
| 1230 | void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy, |
| 1231 | TypeofMode typeof_mode) { |
| 1232 | SetExpressionPosition(proxy); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1233 | PrepareForBailoutForId(proxy->BeforeId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1234 | Variable* var = proxy->var(); |
| 1235 | |
| 1236 | // Three cases: global variables, lookup variables, and all other types of |
| 1237 | // variables. |
| 1238 | switch (var->location()) { |
| 1239 | case VariableLocation::GLOBAL: |
| 1240 | case VariableLocation::UNALLOCATED: { |
| 1241 | Comment cmnt(masm_, "[ Global variable"); |
| 1242 | EmitGlobalVariableLoad(proxy, typeof_mode); |
| 1243 | context()->Plug(eax); |
| 1244 | break; |
| 1245 | } |
| 1246 | |
| 1247 | case VariableLocation::PARAMETER: |
| 1248 | case VariableLocation::LOCAL: |
| 1249 | case VariableLocation::CONTEXT: { |
| 1250 | DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_mode); |
| 1251 | Comment cmnt(masm_, var->IsContextSlot() ? "[ Context variable" |
| 1252 | : "[ Stack variable"); |
| 1253 | |
| 1254 | if (NeedsHoleCheckForLoad(proxy)) { |
| 1255 | // Let and const need a read barrier. |
| 1256 | Label done; |
| 1257 | GetVar(eax, var); |
| 1258 | __ cmp(eax, isolate()->factory()->the_hole_value()); |
| 1259 | __ j(not_equal, &done, Label::kNear); |
| 1260 | if (var->mode() == LET || var->mode() == CONST) { |
| 1261 | // Throw a reference error when using an uninitialized let/const |
| 1262 | // binding in harmony mode. |
| 1263 | __ push(Immediate(var->name())); |
| 1264 | __ CallRuntime(Runtime::kThrowReferenceError); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1265 | } |
| 1266 | __ bind(&done); |
| 1267 | context()->Plug(eax); |
| 1268 | break; |
| 1269 | } |
| 1270 | context()->Plug(var); |
| 1271 | break; |
| 1272 | } |
| 1273 | |
| 1274 | case VariableLocation::LOOKUP: { |
| 1275 | Comment cmnt(masm_, "[ Lookup variable"); |
| 1276 | Label done, slow; |
| 1277 | // Generate code for loading from variables potentially shadowed |
| 1278 | // by eval-introduced variables. |
| 1279 | EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done); |
| 1280 | __ bind(&slow); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1281 | __ push(Immediate(var->name())); |
| 1282 | Runtime::FunctionId function_id = |
| 1283 | typeof_mode == NOT_INSIDE_TYPEOF |
| 1284 | ? Runtime::kLoadLookupSlot |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1285 | : Runtime::kLoadLookupSlotInsideTypeof; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1286 | __ CallRuntime(function_id); |
| 1287 | __ bind(&done); |
| 1288 | context()->Plug(eax); |
| 1289 | break; |
| 1290 | } |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1295 | void FullCodeGenerator::EmitAccessor(ObjectLiteralProperty* property) { |
| 1296 | Expression* expression = (property == NULL) ? NULL : property->value(); |
| 1297 | if (expression == NULL) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1298 | PushOperand(isolate()->factory()->null_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1299 | } else { |
| 1300 | VisitForStackValue(expression); |
| 1301 | if (NeedsHomeObject(expression)) { |
| 1302 | DCHECK(property->kind() == ObjectLiteral::Property::GETTER || |
| 1303 | property->kind() == ObjectLiteral::Property::SETTER); |
| 1304 | int offset = property->kind() == ObjectLiteral::Property::GETTER ? 2 : 3; |
| 1305 | EmitSetHomeObject(expression, offset, property->GetSlot()); |
| 1306 | } |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | |
| 1311 | void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
| 1312 | Comment cmnt(masm_, "[ ObjectLiteral"); |
| 1313 | |
| 1314 | Handle<FixedArray> constant_properties = expr->constant_properties(); |
| 1315 | int flags = expr->ComputeFlags(); |
| 1316 | // If any of the keys would store to the elements array, then we shouldn't |
| 1317 | // allow it. |
| 1318 | if (MustCreateObjectLiteralWithRuntime(expr)) { |
| 1319 | __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1320 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 1321 | __ push(Immediate(constant_properties)); |
| 1322 | __ push(Immediate(Smi::FromInt(flags))); |
| 1323 | __ CallRuntime(Runtime::kCreateObjectLiteral); |
| 1324 | } else { |
| 1325 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1326 | __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
| 1327 | __ mov(ecx, Immediate(constant_properties)); |
| 1328 | __ mov(edx, Immediate(Smi::FromInt(flags))); |
| 1329 | FastCloneShallowObjectStub stub(isolate(), expr->properties_count()); |
| 1330 | __ CallStub(&stub); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1331 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1332 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1333 | PrepareForBailoutForId(expr->CreateLiteralId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1334 | |
| 1335 | // If result_saved is true the result is on top of the stack. If |
| 1336 | // result_saved is false the result is in eax. |
| 1337 | bool result_saved = false; |
| 1338 | |
| 1339 | AccessorTable accessor_table(zone()); |
| 1340 | int property_index = 0; |
| 1341 | for (; property_index < expr->properties()->length(); property_index++) { |
| 1342 | ObjectLiteral::Property* property = expr->properties()->at(property_index); |
| 1343 | if (property->is_computed_name()) break; |
| 1344 | if (property->IsCompileTimeValue()) continue; |
| 1345 | |
| 1346 | Literal* key = property->key()->AsLiteral(); |
| 1347 | Expression* value = property->value(); |
| 1348 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1349 | PushOperand(eax); // Save result on the stack |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1350 | result_saved = true; |
| 1351 | } |
| 1352 | switch (property->kind()) { |
| 1353 | case ObjectLiteral::Property::CONSTANT: |
| 1354 | UNREACHABLE(); |
| 1355 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1356 | DCHECK(!CompileTimeValue::IsCompileTimeValue(value)); |
| 1357 | // Fall through. |
| 1358 | case ObjectLiteral::Property::COMPUTED: |
| 1359 | // It is safe to use [[Put]] here because the boilerplate already |
| 1360 | // contains computed properties with an uninitialized value. |
| 1361 | if (key->value()->IsInternalizedString()) { |
| 1362 | if (property->emit_store()) { |
| 1363 | VisitForAccumulatorValue(value); |
| 1364 | DCHECK(StoreDescriptor::ValueRegister().is(eax)); |
| 1365 | __ mov(StoreDescriptor::NameRegister(), Immediate(key->value())); |
| 1366 | __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 1367 | EmitLoadStoreICSlot(property->GetSlot(0)); |
| 1368 | CallStoreIC(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1369 | PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1370 | if (NeedsHomeObject(value)) { |
| 1371 | EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); |
| 1372 | } |
| 1373 | } else { |
| 1374 | VisitForEffect(value); |
| 1375 | } |
| 1376 | break; |
| 1377 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1378 | PushOperand(Operand(esp, 0)); // Duplicate receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1379 | VisitForStackValue(key); |
| 1380 | VisitForStackValue(value); |
| 1381 | if (property->emit_store()) { |
| 1382 | if (NeedsHomeObject(value)) { |
| 1383 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 1384 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1385 | PushOperand(Smi::FromInt(SLOPPY)); // Language mode |
| 1386 | CallRuntimeWithOperands(Runtime::kSetProperty); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1387 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1388 | DropOperands(3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1389 | } |
| 1390 | break; |
| 1391 | case ObjectLiteral::Property::PROTOTYPE: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1392 | PushOperand(Operand(esp, 0)); // Duplicate receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1393 | VisitForStackValue(value); |
| 1394 | DCHECK(property->emit_store()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1395 | CallRuntimeWithOperands(Runtime::kInternalSetPrototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1396 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1397 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1398 | break; |
| 1399 | case ObjectLiteral::Property::GETTER: |
| 1400 | if (property->emit_store()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1401 | AccessorTable::Iterator it = accessor_table.lookup(key); |
| 1402 | it->second->bailout_id = expr->GetIdForPropertySet(property_index); |
| 1403 | it->second->getter = property; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1404 | } |
| 1405 | break; |
| 1406 | case ObjectLiteral::Property::SETTER: |
| 1407 | if (property->emit_store()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1408 | AccessorTable::Iterator it = accessor_table.lookup(key); |
| 1409 | it->second->bailout_id = expr->GetIdForPropertySet(property_index); |
| 1410 | it->second->setter = property; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1411 | } |
| 1412 | break; |
| 1413 | } |
| 1414 | } |
| 1415 | |
| 1416 | // Emit code to define accessors, using only a single call to the runtime for |
| 1417 | // each pair of corresponding getters and setters. |
| 1418 | for (AccessorTable::Iterator it = accessor_table.begin(); |
| 1419 | it != accessor_table.end(); |
| 1420 | ++it) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1421 | PushOperand(Operand(esp, 0)); // Duplicate receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1422 | VisitForStackValue(it->first); |
| 1423 | |
| 1424 | EmitAccessor(it->second->getter); |
| 1425 | EmitAccessor(it->second->setter); |
| 1426 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1427 | PushOperand(Smi::FromInt(NONE)); |
| 1428 | CallRuntimeWithOperands(Runtime::kDefineAccessorPropertyUnchecked); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1429 | PrepareForBailoutForId(it->second->bailout_id, BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1430 | } |
| 1431 | |
| 1432 | // Object literals have two parts. The "static" part on the left contains no |
| 1433 | // computed property names, and so we can compute its map ahead of time; see |
| 1434 | // runtime.cc::CreateObjectLiteralBoilerplate. The second "dynamic" part |
| 1435 | // starts with the first computed property name, and continues with all |
| 1436 | // properties to its right. All the code from above initializes the static |
| 1437 | // component of the object literal, and arranges for the map of the result to |
| 1438 | // reflect the static order in which the keys appear. For the dynamic |
| 1439 | // properties, we compile them into a series of "SetOwnProperty" runtime |
| 1440 | // calls. This will preserve insertion order. |
| 1441 | for (; property_index < expr->properties()->length(); property_index++) { |
| 1442 | ObjectLiteral::Property* property = expr->properties()->at(property_index); |
| 1443 | |
| 1444 | Expression* value = property->value(); |
| 1445 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1446 | PushOperand(eax); // Save result on the stack |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1447 | result_saved = true; |
| 1448 | } |
| 1449 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1450 | PushOperand(Operand(esp, 0)); // Duplicate receiver. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1451 | |
| 1452 | if (property->kind() == ObjectLiteral::Property::PROTOTYPE) { |
| 1453 | DCHECK(!property->is_computed_name()); |
| 1454 | VisitForStackValue(value); |
| 1455 | DCHECK(property->emit_store()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1456 | CallRuntimeWithOperands(Runtime::kInternalSetPrototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1457 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1458 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1459 | } else { |
| 1460 | EmitPropertyKey(property, expr->GetIdForPropertyName(property_index)); |
| 1461 | VisitForStackValue(value); |
| 1462 | if (NeedsHomeObject(value)) { |
| 1463 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 1464 | } |
| 1465 | |
| 1466 | switch (property->kind()) { |
| 1467 | case ObjectLiteral::Property::CONSTANT: |
| 1468 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1469 | case ObjectLiteral::Property::COMPUTED: |
| 1470 | if (property->emit_store()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1471 | PushOperand(Smi::FromInt(NONE)); |
| 1472 | PushOperand(Smi::FromInt(property->NeedsSetFunctionName())); |
| 1473 | CallRuntimeWithOperands(Runtime::kDefineDataPropertyInLiteral); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1474 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
| 1475 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1476 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1477 | DropOperands(3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1478 | } |
| 1479 | break; |
| 1480 | |
| 1481 | case ObjectLiteral::Property::PROTOTYPE: |
| 1482 | UNREACHABLE(); |
| 1483 | break; |
| 1484 | |
| 1485 | case ObjectLiteral::Property::GETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1486 | PushOperand(Smi::FromInt(NONE)); |
| 1487 | CallRuntimeWithOperands(Runtime::kDefineGetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1488 | break; |
| 1489 | |
| 1490 | case ObjectLiteral::Property::SETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1491 | PushOperand(Smi::FromInt(NONE)); |
| 1492 | CallRuntimeWithOperands(Runtime::kDefineSetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1493 | break; |
| 1494 | } |
| 1495 | } |
| 1496 | } |
| 1497 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1498 | if (result_saved) { |
| 1499 | context()->PlugTOS(); |
| 1500 | } else { |
| 1501 | context()->Plug(eax); |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | |
| 1506 | void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
| 1507 | Comment cmnt(masm_, "[ ArrayLiteral"); |
| 1508 | |
| 1509 | Handle<FixedArray> constant_elements = expr->constant_elements(); |
| 1510 | bool has_constant_fast_elements = |
| 1511 | IsFastObjectElementsKind(expr->constant_elements_kind()); |
| 1512 | |
| 1513 | AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; |
| 1514 | if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) { |
| 1515 | // If the only customer of allocation sites is transitioning, then |
| 1516 | // we can turn it off if we don't have anywhere else to transition to. |
| 1517 | allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; |
| 1518 | } |
| 1519 | |
| 1520 | if (MustCreateArrayLiteralWithRuntime(expr)) { |
| 1521 | __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1522 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 1523 | __ push(Immediate(constant_elements)); |
| 1524 | __ push(Immediate(Smi::FromInt(expr->ComputeFlags()))); |
| 1525 | __ CallRuntime(Runtime::kCreateArrayLiteral); |
| 1526 | } else { |
| 1527 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1528 | __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
| 1529 | __ mov(ecx, Immediate(constant_elements)); |
| 1530 | FastCloneShallowArrayStub stub(isolate(), allocation_site_mode); |
| 1531 | __ CallStub(&stub); |
| 1532 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1533 | PrepareForBailoutForId(expr->CreateLiteralId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1534 | |
| 1535 | bool result_saved = false; // Is the result saved to the stack? |
| 1536 | ZoneList<Expression*>* subexprs = expr->values(); |
| 1537 | int length = subexprs->length(); |
| 1538 | |
| 1539 | // Emit code to evaluate all the non-constant subexpressions and to store |
| 1540 | // them into the newly cloned array. |
| 1541 | int array_index = 0; |
| 1542 | for (; array_index < length; array_index++) { |
| 1543 | Expression* subexpr = subexprs->at(array_index); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1544 | DCHECK(!subexpr->IsSpread()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1545 | |
| 1546 | // If the subexpression is a literal or a simple materialized literal it |
| 1547 | // is already set in the cloned array. |
| 1548 | if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; |
| 1549 | |
| 1550 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1551 | PushOperand(eax); // array literal. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1552 | result_saved = true; |
| 1553 | } |
| 1554 | VisitForAccumulatorValue(subexpr); |
| 1555 | |
| 1556 | __ mov(StoreDescriptor::NameRegister(), |
| 1557 | Immediate(Smi::FromInt(array_index))); |
| 1558 | __ mov(StoreDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 1559 | EmitLoadStoreICSlot(expr->LiteralFeedbackSlot()); |
| 1560 | Handle<Code> ic = |
| 1561 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 1562 | CallIC(ic); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1563 | PrepareForBailoutForId(expr->GetIdForElement(array_index), |
| 1564 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1565 | } |
| 1566 | |
| 1567 | // In case the array literal contains spread expressions it has two parts. The |
| 1568 | // first part is the "static" array which has a literal index is handled |
| 1569 | // above. The second part is the part after the first spread expression |
| 1570 | // (inclusive) and these elements gets appended to the array. Note that the |
| 1571 | // number elements an iterable produces is unknown ahead of time. |
| 1572 | if (array_index < length && result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1573 | PopOperand(eax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1574 | result_saved = false; |
| 1575 | } |
| 1576 | for (; array_index < length; array_index++) { |
| 1577 | Expression* subexpr = subexprs->at(array_index); |
| 1578 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1579 | PushOperand(eax); |
| 1580 | DCHECK(!subexpr->IsSpread()); |
| 1581 | VisitForStackValue(subexpr); |
| 1582 | CallRuntimeWithOperands(Runtime::kAppendElement); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1583 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1584 | PrepareForBailoutForId(expr->GetIdForElement(array_index), |
| 1585 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1586 | } |
| 1587 | |
| 1588 | if (result_saved) { |
| 1589 | context()->PlugTOS(); |
| 1590 | } else { |
| 1591 | context()->Plug(eax); |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | |
| 1596 | void FullCodeGenerator::VisitAssignment(Assignment* expr) { |
| 1597 | DCHECK(expr->target()->IsValidReferenceExpressionOrThis()); |
| 1598 | |
| 1599 | Comment cmnt(masm_, "[ Assignment"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1600 | |
| 1601 | Property* property = expr->target()->AsProperty(); |
| 1602 | LhsKind assign_type = Property::GetAssignType(property); |
| 1603 | |
| 1604 | // Evaluate LHS expression. |
| 1605 | switch (assign_type) { |
| 1606 | case VARIABLE: |
| 1607 | // Nothing to do here. |
| 1608 | break; |
| 1609 | case NAMED_SUPER_PROPERTY: |
| 1610 | VisitForStackValue( |
| 1611 | property->obj()->AsSuperPropertyReference()->this_var()); |
| 1612 | VisitForAccumulatorValue( |
| 1613 | property->obj()->AsSuperPropertyReference()->home_object()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1614 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1615 | if (expr->is_compound()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1616 | PushOperand(MemOperand(esp, kPointerSize)); |
| 1617 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1618 | } |
| 1619 | break; |
| 1620 | case NAMED_PROPERTY: |
| 1621 | if (expr->is_compound()) { |
| 1622 | // We need the receiver both on the stack and in the register. |
| 1623 | VisitForStackValue(property->obj()); |
| 1624 | __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 1625 | } else { |
| 1626 | VisitForStackValue(property->obj()); |
| 1627 | } |
| 1628 | break; |
| 1629 | case KEYED_SUPER_PROPERTY: |
| 1630 | VisitForStackValue( |
| 1631 | property->obj()->AsSuperPropertyReference()->this_var()); |
| 1632 | VisitForStackValue( |
| 1633 | property->obj()->AsSuperPropertyReference()->home_object()); |
| 1634 | VisitForAccumulatorValue(property->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1635 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1636 | if (expr->is_compound()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1637 | PushOperand(MemOperand(esp, 2 * kPointerSize)); |
| 1638 | PushOperand(MemOperand(esp, 2 * kPointerSize)); |
| 1639 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1640 | } |
| 1641 | break; |
| 1642 | case KEYED_PROPERTY: { |
| 1643 | if (expr->is_compound()) { |
| 1644 | VisitForStackValue(property->obj()); |
| 1645 | VisitForStackValue(property->key()); |
| 1646 | __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, kPointerSize)); |
| 1647 | __ mov(LoadDescriptor::NameRegister(), Operand(esp, 0)); |
| 1648 | } else { |
| 1649 | VisitForStackValue(property->obj()); |
| 1650 | VisitForStackValue(property->key()); |
| 1651 | } |
| 1652 | break; |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | // For compound assignments we need another deoptimization point after the |
| 1657 | // variable/property load. |
| 1658 | if (expr->is_compound()) { |
| 1659 | AccumulatorValueContext result_context(this); |
| 1660 | { AccumulatorValueContext left_operand_context(this); |
| 1661 | switch (assign_type) { |
| 1662 | case VARIABLE: |
| 1663 | EmitVariableLoad(expr->target()->AsVariableProxy()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1664 | PrepareForBailout(expr->target(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1665 | break; |
| 1666 | case NAMED_SUPER_PROPERTY: |
| 1667 | EmitNamedSuperPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1668 | PrepareForBailoutForId(property->LoadId(), |
| 1669 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1670 | break; |
| 1671 | case NAMED_PROPERTY: |
| 1672 | EmitNamedPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1673 | PrepareForBailoutForId(property->LoadId(), |
| 1674 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1675 | break; |
| 1676 | case KEYED_SUPER_PROPERTY: |
| 1677 | EmitKeyedSuperPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1678 | PrepareForBailoutForId(property->LoadId(), |
| 1679 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1680 | break; |
| 1681 | case KEYED_PROPERTY: |
| 1682 | EmitKeyedPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1683 | PrepareForBailoutForId(property->LoadId(), |
| 1684 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1685 | break; |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | Token::Value op = expr->binary_op(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1690 | PushOperand(eax); // Left operand goes on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1691 | VisitForAccumulatorValue(expr->value()); |
| 1692 | |
| 1693 | if (ShouldInlineSmiCase(op)) { |
| 1694 | EmitInlineSmiBinaryOp(expr->binary_operation(), |
| 1695 | op, |
| 1696 | expr->target(), |
| 1697 | expr->value()); |
| 1698 | } else { |
| 1699 | EmitBinaryOp(expr->binary_operation(), op); |
| 1700 | } |
| 1701 | |
| 1702 | // Deoptimization point in case the binary operation may have side effects. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1703 | PrepareForBailout(expr->binary_operation(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1704 | } else { |
| 1705 | VisitForAccumulatorValue(expr->value()); |
| 1706 | } |
| 1707 | |
| 1708 | SetExpressionPosition(expr); |
| 1709 | |
| 1710 | // Store the value. |
| 1711 | switch (assign_type) { |
| 1712 | case VARIABLE: |
| 1713 | EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), |
| 1714 | expr->op(), expr->AssignmentSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1715 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1716 | context()->Plug(eax); |
| 1717 | break; |
| 1718 | case NAMED_PROPERTY: |
| 1719 | EmitNamedPropertyAssignment(expr); |
| 1720 | break; |
| 1721 | case NAMED_SUPER_PROPERTY: |
| 1722 | EmitNamedSuperPropertyStore(property); |
| 1723 | context()->Plug(result_register()); |
| 1724 | break; |
| 1725 | case KEYED_SUPER_PROPERTY: |
| 1726 | EmitKeyedSuperPropertyStore(property); |
| 1727 | context()->Plug(result_register()); |
| 1728 | break; |
| 1729 | case KEYED_PROPERTY: |
| 1730 | EmitKeyedPropertyAssignment(expr); |
| 1731 | break; |
| 1732 | } |
| 1733 | } |
| 1734 | |
| 1735 | |
| 1736 | void FullCodeGenerator::VisitYield(Yield* expr) { |
| 1737 | Comment cmnt(masm_, "[ Yield"); |
| 1738 | SetExpressionPosition(expr); |
| 1739 | |
| 1740 | // Evaluate yielded value first; the initial iterator definition depends on |
| 1741 | // this. It stays on the stack while we update the iterator. |
| 1742 | VisitForStackValue(expr->expression()); |
| 1743 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1744 | Label suspend, continuation, post_runtime, resume, exception; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1745 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1746 | __ jmp(&suspend); |
| 1747 | __ bind(&continuation); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1748 | // When we arrive here, eax holds the generator object. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1749 | __ RecordGeneratorContinuation(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1750 | __ mov(ebx, FieldOperand(eax, JSGeneratorObject::kResumeModeOffset)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1751 | __ mov(eax, FieldOperand(eax, JSGeneratorObject::kInputOrDebugPosOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1752 | STATIC_ASSERT(JSGeneratorObject::kNext < JSGeneratorObject::kReturn); |
| 1753 | STATIC_ASSERT(JSGeneratorObject::kThrow > JSGeneratorObject::kReturn); |
| 1754 | __ cmp(ebx, Immediate(Smi::FromInt(JSGeneratorObject::kReturn))); |
| 1755 | __ j(less, &resume); |
| 1756 | __ Push(result_register()); |
| 1757 | __ j(greater, &exception); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1758 | EmitCreateIteratorResult(true); |
| 1759 | EmitUnwindAndReturn(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1760 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1761 | __ bind(&exception); |
| 1762 | __ CallRuntime(Runtime::kThrow); |
| 1763 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1764 | __ bind(&suspend); |
| 1765 | OperandStackDepthIncrement(1); // Not popped on this path. |
| 1766 | VisitForAccumulatorValue(expr->generator_object()); |
| 1767 | DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
| 1768 | __ mov(FieldOperand(eax, JSGeneratorObject::kContinuationOffset), |
| 1769 | Immediate(Smi::FromInt(continuation.pos()))); |
| 1770 | __ mov(FieldOperand(eax, JSGeneratorObject::kContextOffset), esi); |
| 1771 | __ mov(ecx, esi); |
| 1772 | __ RecordWriteField(eax, JSGeneratorObject::kContextOffset, ecx, edx, |
| 1773 | kDontSaveFPRegs); |
| 1774 | __ lea(ebx, Operand(ebp, StandardFrameConstants::kExpressionsOffset)); |
| 1775 | __ cmp(esp, ebx); |
| 1776 | __ j(equal, &post_runtime); |
| 1777 | __ push(eax); // generator object |
| 1778 | __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1779 | RestoreContext(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1780 | __ bind(&post_runtime); |
| 1781 | PopOperand(result_register()); |
| 1782 | EmitReturnSequence(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1783 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1784 | __ bind(&resume); |
| 1785 | context()->Plug(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1786 | } |
| 1787 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1788 | void FullCodeGenerator::PushOperand(MemOperand operand) { |
| 1789 | OperandStackDepthIncrement(1); |
| 1790 | __ Push(operand); |
| 1791 | } |
| 1792 | |
| 1793 | void FullCodeGenerator::EmitOperandStackDepthCheck() { |
| 1794 | if (FLAG_debug_code) { |
| 1795 | int expected_diff = StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1796 | operand_stack_depth_ * kPointerSize; |
| 1797 | __ mov(eax, ebp); |
| 1798 | __ sub(eax, esp); |
| 1799 | __ cmp(eax, Immediate(expected_diff)); |
| 1800 | __ Assert(equal, kUnexpectedStackDepth); |
| 1801 | } |
| 1802 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1803 | |
| 1804 | void FullCodeGenerator::EmitCreateIteratorResult(bool done) { |
| 1805 | Label allocate, done_allocate; |
| 1806 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1807 | __ Allocate(JSIteratorResult::kSize, eax, ecx, edx, &allocate, |
| 1808 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1809 | __ jmp(&done_allocate, Label::kNear); |
| 1810 | |
| 1811 | __ bind(&allocate); |
| 1812 | __ Push(Smi::FromInt(JSIteratorResult::kSize)); |
| 1813 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 1814 | |
| 1815 | __ bind(&done_allocate); |
| 1816 | __ mov(ebx, NativeContextOperand()); |
| 1817 | __ mov(ebx, ContextOperand(ebx, Context::ITERATOR_RESULT_MAP_INDEX)); |
| 1818 | __ mov(FieldOperand(eax, HeapObject::kMapOffset), ebx); |
| 1819 | __ mov(FieldOperand(eax, JSObject::kPropertiesOffset), |
| 1820 | isolate()->factory()->empty_fixed_array()); |
| 1821 | __ mov(FieldOperand(eax, JSObject::kElementsOffset), |
| 1822 | isolate()->factory()->empty_fixed_array()); |
| 1823 | __ pop(FieldOperand(eax, JSIteratorResult::kValueOffset)); |
| 1824 | __ mov(FieldOperand(eax, JSIteratorResult::kDoneOffset), |
| 1825 | isolate()->factory()->ToBoolean(done)); |
| 1826 | STATIC_ASSERT(JSIteratorResult::kSize == 5 * kPointerSize); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1827 | OperandStackDepthDecrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1828 | } |
| 1829 | |
| 1830 | |
| 1831 | void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr, |
| 1832 | Token::Value op, |
| 1833 | Expression* left, |
| 1834 | Expression* right) { |
| 1835 | // Do combined smi check of the operands. Left operand is on the |
| 1836 | // stack. Right operand is in eax. |
| 1837 | Label smi_case, done, stub_call; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1838 | PopOperand(edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1839 | __ mov(ecx, eax); |
| 1840 | __ or_(eax, edx); |
| 1841 | JumpPatchSite patch_site(masm_); |
| 1842 | patch_site.EmitJumpIfSmi(eax, &smi_case, Label::kNear); |
| 1843 | |
| 1844 | __ bind(&stub_call); |
| 1845 | __ mov(eax, ecx); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1846 | Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1847 | CallIC(code, expr->BinaryOperationFeedbackId()); |
| 1848 | patch_site.EmitPatchInfo(); |
| 1849 | __ jmp(&done, Label::kNear); |
| 1850 | |
| 1851 | // Smi case. |
| 1852 | __ bind(&smi_case); |
| 1853 | __ mov(eax, edx); // Copy left operand in case of a stub call. |
| 1854 | |
| 1855 | switch (op) { |
| 1856 | case Token::SAR: |
| 1857 | __ SmiUntag(ecx); |
| 1858 | __ sar_cl(eax); // No checks of result necessary |
| 1859 | __ and_(eax, Immediate(~kSmiTagMask)); |
| 1860 | break; |
| 1861 | case Token::SHL: { |
| 1862 | Label result_ok; |
| 1863 | __ SmiUntag(eax); |
| 1864 | __ SmiUntag(ecx); |
| 1865 | __ shl_cl(eax); |
| 1866 | // Check that the *signed* result fits in a smi. |
| 1867 | __ cmp(eax, 0xc0000000); |
| 1868 | __ j(positive, &result_ok); |
| 1869 | __ SmiTag(ecx); |
| 1870 | __ jmp(&stub_call); |
| 1871 | __ bind(&result_ok); |
| 1872 | __ SmiTag(eax); |
| 1873 | break; |
| 1874 | } |
| 1875 | case Token::SHR: { |
| 1876 | Label result_ok; |
| 1877 | __ SmiUntag(eax); |
| 1878 | __ SmiUntag(ecx); |
| 1879 | __ shr_cl(eax); |
| 1880 | __ test(eax, Immediate(0xc0000000)); |
| 1881 | __ j(zero, &result_ok); |
| 1882 | __ SmiTag(ecx); |
| 1883 | __ jmp(&stub_call); |
| 1884 | __ bind(&result_ok); |
| 1885 | __ SmiTag(eax); |
| 1886 | break; |
| 1887 | } |
| 1888 | case Token::ADD: |
| 1889 | __ add(eax, ecx); |
| 1890 | __ j(overflow, &stub_call); |
| 1891 | break; |
| 1892 | case Token::SUB: |
| 1893 | __ sub(eax, ecx); |
| 1894 | __ j(overflow, &stub_call); |
| 1895 | break; |
| 1896 | case Token::MUL: { |
| 1897 | __ SmiUntag(eax); |
| 1898 | __ imul(eax, ecx); |
| 1899 | __ j(overflow, &stub_call); |
| 1900 | __ test(eax, eax); |
| 1901 | __ j(not_zero, &done, Label::kNear); |
| 1902 | __ mov(ebx, edx); |
| 1903 | __ or_(ebx, ecx); |
| 1904 | __ j(negative, &stub_call); |
| 1905 | break; |
| 1906 | } |
| 1907 | case Token::BIT_OR: |
| 1908 | __ or_(eax, ecx); |
| 1909 | break; |
| 1910 | case Token::BIT_AND: |
| 1911 | __ and_(eax, ecx); |
| 1912 | break; |
| 1913 | case Token::BIT_XOR: |
| 1914 | __ xor_(eax, ecx); |
| 1915 | break; |
| 1916 | default: |
| 1917 | UNREACHABLE(); |
| 1918 | } |
| 1919 | |
| 1920 | __ bind(&done); |
| 1921 | context()->Plug(eax); |
| 1922 | } |
| 1923 | |
| 1924 | |
| 1925 | void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1926 | for (int i = 0; i < lit->properties()->length(); i++) { |
| 1927 | ObjectLiteral::Property* property = lit->properties()->at(i); |
| 1928 | Expression* value = property->value(); |
| 1929 | |
| 1930 | if (property->is_static()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1931 | PushOperand(Operand(esp, kPointerSize)); // constructor |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1932 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1933 | PushOperand(Operand(esp, 0)); // prototype |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1934 | } |
| 1935 | EmitPropertyKey(property, lit->GetIdForProperty(i)); |
| 1936 | |
| 1937 | // The static prototype property is read only. We handle the non computed |
| 1938 | // property name case in the parser. Since this is the only case where we |
| 1939 | // need to check for an own read only property we special case this so we do |
| 1940 | // not need to do this for every property. |
| 1941 | if (property->is_static() && property->is_computed_name()) { |
| 1942 | __ CallRuntime(Runtime::kThrowIfStaticPrototype); |
| 1943 | __ push(eax); |
| 1944 | } |
| 1945 | |
| 1946 | VisitForStackValue(value); |
| 1947 | if (NeedsHomeObject(value)) { |
| 1948 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 1949 | } |
| 1950 | |
| 1951 | switch (property->kind()) { |
| 1952 | case ObjectLiteral::Property::CONSTANT: |
| 1953 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1954 | case ObjectLiteral::Property::PROTOTYPE: |
| 1955 | UNREACHABLE(); |
| 1956 | case ObjectLiteral::Property::COMPUTED: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1957 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 1958 | PushOperand(Smi::FromInt(property->NeedsSetFunctionName())); |
| 1959 | CallRuntimeWithOperands(Runtime::kDefineDataPropertyInLiteral); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1960 | break; |
| 1961 | |
| 1962 | case ObjectLiteral::Property::GETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1963 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 1964 | CallRuntimeWithOperands(Runtime::kDefineGetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1965 | break; |
| 1966 | |
| 1967 | case ObjectLiteral::Property::SETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1968 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 1969 | CallRuntimeWithOperands(Runtime::kDefineSetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1970 | break; |
| 1971 | } |
| 1972 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1973 | } |
| 1974 | |
| 1975 | |
| 1976 | void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1977 | PopOperand(edx); |
| 1978 | Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1979 | JumpPatchSite patch_site(masm_); // unbound, signals no inlined smi code. |
| 1980 | CallIC(code, expr->BinaryOperationFeedbackId()); |
| 1981 | patch_site.EmitPatchInfo(); |
| 1982 | context()->Plug(eax); |
| 1983 | } |
| 1984 | |
| 1985 | |
| 1986 | void FullCodeGenerator::EmitAssignment(Expression* expr, |
| 1987 | FeedbackVectorSlot slot) { |
| 1988 | DCHECK(expr->IsValidReferenceExpressionOrThis()); |
| 1989 | |
| 1990 | Property* prop = expr->AsProperty(); |
| 1991 | LhsKind assign_type = Property::GetAssignType(prop); |
| 1992 | |
| 1993 | switch (assign_type) { |
| 1994 | case VARIABLE: { |
| 1995 | Variable* var = expr->AsVariableProxy()->var(); |
| 1996 | EffectContext context(this); |
| 1997 | EmitVariableAssignment(var, Token::ASSIGN, slot); |
| 1998 | break; |
| 1999 | } |
| 2000 | case NAMED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2001 | PushOperand(eax); // Preserve value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2002 | VisitForAccumulatorValue(prop->obj()); |
| 2003 | __ Move(StoreDescriptor::ReceiverRegister(), eax); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2004 | PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2005 | __ mov(StoreDescriptor::NameRegister(), |
| 2006 | prop->key()->AsLiteral()->value()); |
| 2007 | EmitLoadStoreICSlot(slot); |
| 2008 | CallStoreIC(); |
| 2009 | break; |
| 2010 | } |
| 2011 | case NAMED_SUPER_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2012 | PushOperand(eax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2013 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 2014 | VisitForAccumulatorValue( |
| 2015 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 2016 | // stack: value, this; eax: home_object |
| 2017 | Register scratch = ecx; |
| 2018 | Register scratch2 = edx; |
| 2019 | __ mov(scratch, result_register()); // home_object |
| 2020 | __ mov(eax, MemOperand(esp, kPointerSize)); // value |
| 2021 | __ mov(scratch2, MemOperand(esp, 0)); // this |
| 2022 | __ mov(MemOperand(esp, kPointerSize), scratch2); // this |
| 2023 | __ mov(MemOperand(esp, 0), scratch); // home_object |
| 2024 | // stack: this, home_object. eax: value |
| 2025 | EmitNamedSuperPropertyStore(prop); |
| 2026 | break; |
| 2027 | } |
| 2028 | case KEYED_SUPER_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2029 | PushOperand(eax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2030 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 2031 | VisitForStackValue( |
| 2032 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 2033 | VisitForAccumulatorValue(prop->key()); |
| 2034 | Register scratch = ecx; |
| 2035 | Register scratch2 = edx; |
| 2036 | __ mov(scratch2, MemOperand(esp, 2 * kPointerSize)); // value |
| 2037 | // stack: value, this, home_object; eax: key, edx: value |
| 2038 | __ mov(scratch, MemOperand(esp, kPointerSize)); // this |
| 2039 | __ mov(MemOperand(esp, 2 * kPointerSize), scratch); |
| 2040 | __ mov(scratch, MemOperand(esp, 0)); // home_object |
| 2041 | __ mov(MemOperand(esp, kPointerSize), scratch); |
| 2042 | __ mov(MemOperand(esp, 0), eax); |
| 2043 | __ mov(eax, scratch2); |
| 2044 | // stack: this, home_object, key; eax: value. |
| 2045 | EmitKeyedSuperPropertyStore(prop); |
| 2046 | break; |
| 2047 | } |
| 2048 | case KEYED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2049 | PushOperand(eax); // Preserve value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2050 | VisitForStackValue(prop->obj()); |
| 2051 | VisitForAccumulatorValue(prop->key()); |
| 2052 | __ Move(StoreDescriptor::NameRegister(), eax); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2053 | PopOperand(StoreDescriptor::ReceiverRegister()); // Receiver. |
| 2054 | PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2055 | EmitLoadStoreICSlot(slot); |
| 2056 | Handle<Code> ic = |
| 2057 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 2058 | CallIC(ic); |
| 2059 | break; |
| 2060 | } |
| 2061 | } |
| 2062 | context()->Plug(eax); |
| 2063 | } |
| 2064 | |
| 2065 | |
| 2066 | void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
| 2067 | Variable* var, MemOperand location) { |
| 2068 | __ mov(location, eax); |
| 2069 | if (var->IsContextSlot()) { |
| 2070 | __ mov(edx, eax); |
| 2071 | int offset = Context::SlotOffset(var->index()); |
| 2072 | __ RecordWriteContextSlot(ecx, offset, edx, ebx, kDontSaveFPRegs); |
| 2073 | } |
| 2074 | } |
| 2075 | |
| 2076 | |
| 2077 | void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
| 2078 | FeedbackVectorSlot slot) { |
| 2079 | if (var->IsUnallocated()) { |
| 2080 | // Global var, const, or let. |
| 2081 | __ mov(StoreDescriptor::NameRegister(), var->name()); |
| 2082 | __ mov(StoreDescriptor::ReceiverRegister(), NativeContextOperand()); |
| 2083 | __ mov(StoreDescriptor::ReceiverRegister(), |
| 2084 | ContextOperand(StoreDescriptor::ReceiverRegister(), |
| 2085 | Context::EXTENSION_INDEX)); |
| 2086 | EmitLoadStoreICSlot(slot); |
| 2087 | CallStoreIC(); |
| 2088 | |
| 2089 | } else if (var->mode() == LET && op != Token::INIT) { |
| 2090 | // Non-initializing assignment to let variable needs a write barrier. |
| 2091 | DCHECK(!var->IsLookupSlot()); |
| 2092 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2093 | Label assign; |
| 2094 | MemOperand location = VarOperand(var, ecx); |
| 2095 | __ mov(edx, location); |
| 2096 | __ cmp(edx, isolate()->factory()->the_hole_value()); |
| 2097 | __ j(not_equal, &assign, Label::kNear); |
| 2098 | __ push(Immediate(var->name())); |
| 2099 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2100 | __ bind(&assign); |
| 2101 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2102 | |
| 2103 | } else if (var->mode() == CONST && op != Token::INIT) { |
| 2104 | // Assignment to const variable needs a write barrier. |
| 2105 | DCHECK(!var->IsLookupSlot()); |
| 2106 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2107 | Label const_error; |
| 2108 | MemOperand location = VarOperand(var, ecx); |
| 2109 | __ mov(edx, location); |
| 2110 | __ cmp(edx, isolate()->factory()->the_hole_value()); |
| 2111 | __ j(not_equal, &const_error, Label::kNear); |
| 2112 | __ push(Immediate(var->name())); |
| 2113 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2114 | __ bind(&const_error); |
| 2115 | __ CallRuntime(Runtime::kThrowConstAssignError); |
| 2116 | |
| 2117 | } else if (var->is_this() && var->mode() == CONST && op == Token::INIT) { |
| 2118 | // Initializing assignment to const {this} needs a write barrier. |
| 2119 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2120 | Label uninitialized_this; |
| 2121 | MemOperand location = VarOperand(var, ecx); |
| 2122 | __ mov(edx, location); |
| 2123 | __ cmp(edx, isolate()->factory()->the_hole_value()); |
| 2124 | __ j(equal, &uninitialized_this); |
| 2125 | __ push(Immediate(var->name())); |
| 2126 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2127 | __ bind(&uninitialized_this); |
| 2128 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2129 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2130 | } else if (!var->is_const_mode() || op == Token::INIT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2131 | if (var->IsLookupSlot()) { |
| 2132 | // Assignment to var. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2133 | __ Push(Immediate(var->name())); |
| 2134 | __ Push(eax); |
| 2135 | __ CallRuntime(is_strict(language_mode()) |
| 2136 | ? Runtime::kStoreLookupSlot_Strict |
| 2137 | : Runtime::kStoreLookupSlot_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2138 | } else { |
| 2139 | // Assignment to var or initializing assignment to let/const in harmony |
| 2140 | // mode. |
| 2141 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2142 | MemOperand location = VarOperand(var, ecx); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2143 | if (FLAG_debug_code && var->mode() == LET && op == Token::INIT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2144 | // Check for an uninitialized let binding. |
| 2145 | __ mov(edx, location); |
| 2146 | __ cmp(edx, isolate()->factory()->the_hole_value()); |
| 2147 | __ Check(equal, kLetBindingReInitialization); |
| 2148 | } |
| 2149 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2150 | } |
| 2151 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2152 | } else { |
| 2153 | DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT); |
| 2154 | if (is_strict(language_mode())) { |
| 2155 | __ CallRuntime(Runtime::kThrowConstAssignError); |
| 2156 | } |
| 2157 | // Silently ignore store in sloppy mode. |
| 2158 | } |
| 2159 | } |
| 2160 | |
| 2161 | |
| 2162 | void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
| 2163 | // Assignment to a property, using a named store IC. |
| 2164 | // eax : value |
| 2165 | // esp[0] : receiver |
| 2166 | Property* prop = expr->target()->AsProperty(); |
| 2167 | DCHECK(prop != NULL); |
| 2168 | DCHECK(prop->key()->IsLiteral()); |
| 2169 | |
| 2170 | __ mov(StoreDescriptor::NameRegister(), prop->key()->AsLiteral()->value()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2171 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2172 | EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| 2173 | CallStoreIC(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2174 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2175 | context()->Plug(eax); |
| 2176 | } |
| 2177 | |
| 2178 | |
| 2179 | void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
| 2180 | // Assignment to named property of super. |
| 2181 | // eax : value |
| 2182 | // stack : receiver ('this'), home_object |
| 2183 | DCHECK(prop != NULL); |
| 2184 | Literal* key = prop->key()->AsLiteral(); |
| 2185 | DCHECK(key != NULL); |
| 2186 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2187 | PushOperand(key->value()); |
| 2188 | PushOperand(eax); |
| 2189 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 2190 | ? Runtime::kStoreToSuper_Strict |
| 2191 | : Runtime::kStoreToSuper_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2192 | } |
| 2193 | |
| 2194 | |
| 2195 | void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { |
| 2196 | // Assignment to named property of super. |
| 2197 | // eax : value |
| 2198 | // stack : receiver ('this'), home_object, key |
| 2199 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2200 | PushOperand(eax); |
| 2201 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 2202 | ? Runtime::kStoreKeyedToSuper_Strict |
| 2203 | : Runtime::kStoreKeyedToSuper_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2204 | } |
| 2205 | |
| 2206 | |
| 2207 | void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
| 2208 | // Assignment to a property, using a keyed store IC. |
| 2209 | // eax : value |
| 2210 | // esp[0] : key |
| 2211 | // esp[kPointerSize] : receiver |
| 2212 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2213 | PopOperand(StoreDescriptor::NameRegister()); // Key. |
| 2214 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2215 | DCHECK(StoreDescriptor::ValueRegister().is(eax)); |
| 2216 | Handle<Code> ic = |
| 2217 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 2218 | EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| 2219 | CallIC(ic); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2220 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2221 | context()->Plug(eax); |
| 2222 | } |
| 2223 | |
| 2224 | |
| 2225 | void FullCodeGenerator::CallIC(Handle<Code> code, |
| 2226 | TypeFeedbackId ast_id) { |
| 2227 | ic_total_count_++; |
| 2228 | __ call(code, RelocInfo::CODE_TARGET, ast_id); |
| 2229 | } |
| 2230 | |
| 2231 | |
| 2232 | // Code common for calls using the IC. |
| 2233 | void FullCodeGenerator::EmitCallWithLoadIC(Call* expr) { |
| 2234 | Expression* callee = expr->expression(); |
| 2235 | |
| 2236 | // Get the target function. |
| 2237 | ConvertReceiverMode convert_mode; |
| 2238 | if (callee->IsVariableProxy()) { |
| 2239 | { StackValueContext context(this); |
| 2240 | EmitVariableLoad(callee->AsVariableProxy()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2241 | PrepareForBailout(callee, BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2242 | } |
| 2243 | // Push undefined as receiver. This is patched in the method prologue if it |
| 2244 | // is a sloppy mode method. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2245 | PushOperand(isolate()->factory()->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2246 | convert_mode = ConvertReceiverMode::kNullOrUndefined; |
| 2247 | } else { |
| 2248 | // Load the function from the receiver. |
| 2249 | DCHECK(callee->IsProperty()); |
| 2250 | DCHECK(!callee->AsProperty()->IsSuperAccess()); |
| 2251 | __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 2252 | EmitNamedPropertyLoad(callee->AsProperty()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2253 | PrepareForBailoutForId(callee->AsProperty()->LoadId(), |
| 2254 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2255 | // Push the target function under the receiver. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2256 | PushOperand(Operand(esp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2257 | __ mov(Operand(esp, kPointerSize), eax); |
| 2258 | convert_mode = ConvertReceiverMode::kNotNullOrUndefined; |
| 2259 | } |
| 2260 | |
| 2261 | EmitCall(expr, convert_mode); |
| 2262 | } |
| 2263 | |
| 2264 | |
| 2265 | void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) { |
| 2266 | SetExpressionPosition(expr); |
| 2267 | Expression* callee = expr->expression(); |
| 2268 | DCHECK(callee->IsProperty()); |
| 2269 | Property* prop = callee->AsProperty(); |
| 2270 | DCHECK(prop->IsSuperAccess()); |
| 2271 | |
| 2272 | Literal* key = prop->key()->AsLiteral(); |
| 2273 | DCHECK(!key->value()->IsSmi()); |
| 2274 | // Load the function from the receiver. |
| 2275 | SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| 2276 | VisitForStackValue(super_ref->home_object()); |
| 2277 | VisitForAccumulatorValue(super_ref->this_var()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2278 | PushOperand(eax); |
| 2279 | PushOperand(eax); |
| 2280 | PushOperand(Operand(esp, kPointerSize * 2)); |
| 2281 | PushOperand(key->value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2282 | // Stack here: |
| 2283 | // - home_object |
| 2284 | // - this (receiver) |
| 2285 | // - this (receiver) <-- LoadFromSuper will pop here and below. |
| 2286 | // - home_object |
| 2287 | // - key |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2288 | CallRuntimeWithOperands(Runtime::kLoadFromSuper); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2289 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2290 | |
| 2291 | // Replace home_object with target function. |
| 2292 | __ mov(Operand(esp, kPointerSize), eax); |
| 2293 | |
| 2294 | // Stack here: |
| 2295 | // - target function |
| 2296 | // - this (receiver) |
| 2297 | EmitCall(expr); |
| 2298 | } |
| 2299 | |
| 2300 | |
| 2301 | // Code common for calls using the IC. |
| 2302 | void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr, |
| 2303 | Expression* key) { |
| 2304 | // Load the key. |
| 2305 | VisitForAccumulatorValue(key); |
| 2306 | |
| 2307 | Expression* callee = expr->expression(); |
| 2308 | |
| 2309 | // Load the function from the receiver. |
| 2310 | DCHECK(callee->IsProperty()); |
| 2311 | __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 2312 | __ mov(LoadDescriptor::NameRegister(), eax); |
| 2313 | EmitKeyedPropertyLoad(callee->AsProperty()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2314 | PrepareForBailoutForId(callee->AsProperty()->LoadId(), |
| 2315 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2316 | |
| 2317 | // Push the target function under the receiver. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2318 | PushOperand(Operand(esp, 0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2319 | __ mov(Operand(esp, kPointerSize), eax); |
| 2320 | |
| 2321 | EmitCall(expr, ConvertReceiverMode::kNotNullOrUndefined); |
| 2322 | } |
| 2323 | |
| 2324 | |
| 2325 | void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) { |
| 2326 | Expression* callee = expr->expression(); |
| 2327 | DCHECK(callee->IsProperty()); |
| 2328 | Property* prop = callee->AsProperty(); |
| 2329 | DCHECK(prop->IsSuperAccess()); |
| 2330 | |
| 2331 | SetExpressionPosition(prop); |
| 2332 | // Load the function from the receiver. |
| 2333 | SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| 2334 | VisitForStackValue(super_ref->home_object()); |
| 2335 | VisitForAccumulatorValue(super_ref->this_var()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2336 | PushOperand(eax); |
| 2337 | PushOperand(eax); |
| 2338 | PushOperand(Operand(esp, kPointerSize * 2)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2339 | VisitForStackValue(prop->key()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2340 | // Stack here: |
| 2341 | // - home_object |
| 2342 | // - this (receiver) |
| 2343 | // - this (receiver) <-- LoadKeyedFromSuper will pop here and below. |
| 2344 | // - home_object |
| 2345 | // - key |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2346 | CallRuntimeWithOperands(Runtime::kLoadKeyedFromSuper); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2347 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2348 | |
| 2349 | // Replace home_object with target function. |
| 2350 | __ mov(Operand(esp, kPointerSize), eax); |
| 2351 | |
| 2352 | // Stack here: |
| 2353 | // - target function |
| 2354 | // - this (receiver) |
| 2355 | EmitCall(expr); |
| 2356 | } |
| 2357 | |
| 2358 | |
| 2359 | void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) { |
| 2360 | // Load the arguments. |
| 2361 | ZoneList<Expression*>* args = expr->arguments(); |
| 2362 | int arg_count = args->length(); |
| 2363 | for (int i = 0; i < arg_count; i++) { |
| 2364 | VisitForStackValue(args->at(i)); |
| 2365 | } |
| 2366 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2367 | PrepareForBailoutForId(expr->CallId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2368 | SetCallPosition(expr, expr->tail_call_mode()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2369 | if (expr->tail_call_mode() == TailCallMode::kAllow) { |
| 2370 | if (FLAG_trace) { |
| 2371 | __ CallRuntime(Runtime::kTraceTailCall); |
| 2372 | } |
| 2373 | // Update profiling counters before the tail call since we will |
| 2374 | // not return to this function. |
| 2375 | EmitProfilingCounterHandlingForReturnSequence(true); |
| 2376 | } |
| 2377 | Handle<Code> ic = |
| 2378 | CodeFactory::CallIC(isolate(), arg_count, mode, expr->tail_call_mode()) |
| 2379 | .code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2380 | __ Move(edx, Immediate(SmiFromSlot(expr->CallFeedbackICSlot()))); |
| 2381 | __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
| 2382 | // Don't assign a type feedback id to the IC, since type feedback is provided |
| 2383 | // by the vector above. |
| 2384 | CallIC(ic); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2385 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2386 | |
| 2387 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2388 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2389 | context()->DropAndPlug(1, eax); |
| 2390 | } |
| 2391 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2392 | void FullCodeGenerator::EmitResolvePossiblyDirectEval(Call* expr) { |
| 2393 | int arg_count = expr->arguments()->length(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2394 | // Push copy of the first argument or undefined if it doesn't exist. |
| 2395 | if (arg_count > 0) { |
| 2396 | __ push(Operand(esp, arg_count * kPointerSize)); |
| 2397 | } else { |
| 2398 | __ push(Immediate(isolate()->factory()->undefined_value())); |
| 2399 | } |
| 2400 | |
| 2401 | // Push the enclosing function. |
| 2402 | __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 2403 | |
| 2404 | // Push the language mode. |
| 2405 | __ push(Immediate(Smi::FromInt(language_mode()))); |
| 2406 | |
| 2407 | // Push the start position of the scope the calls resides in. |
| 2408 | __ push(Immediate(Smi::FromInt(scope()->start_position()))); |
| 2409 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2410 | // Push the source position of the eval call. |
| 2411 | __ push(Immediate(Smi::FromInt(expr->position()))); |
| 2412 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2413 | // Do the runtime call. |
| 2414 | __ CallRuntime(Runtime::kResolvePossiblyDirectEval); |
| 2415 | } |
| 2416 | |
| 2417 | |
| 2418 | // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
| 2419 | void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
| 2420 | VariableProxy* callee = expr->expression()->AsVariableProxy(); |
| 2421 | if (callee->var()->IsLookupSlot()) { |
| 2422 | Label slow, done; |
| 2423 | SetExpressionPosition(callee); |
| 2424 | // Generate code for loading from variables potentially shadowed by |
| 2425 | // eval-introduced variables. |
| 2426 | EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done); |
| 2427 | |
| 2428 | __ bind(&slow); |
| 2429 | // Call the runtime to find the function to call (returned in eax) and |
| 2430 | // the object holding it (returned in edx). |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2431 | __ Push(callee->name()); |
| 2432 | __ CallRuntime(Runtime::kLoadLookupSlotForCall); |
| 2433 | PushOperand(eax); // Function. |
| 2434 | PushOperand(edx); // Receiver. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2435 | PrepareForBailoutForId(expr->LookupId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2436 | |
| 2437 | // If fast case code has been generated, emit code to push the function |
| 2438 | // and receiver and have the slow path jump around this code. |
| 2439 | if (done.is_linked()) { |
| 2440 | Label call; |
| 2441 | __ jmp(&call, Label::kNear); |
| 2442 | __ bind(&done); |
| 2443 | // Push function. |
| 2444 | __ push(eax); |
| 2445 | // The receiver is implicitly the global receiver. Indicate this by |
| 2446 | // passing the hole to the call function stub. |
| 2447 | __ push(Immediate(isolate()->factory()->undefined_value())); |
| 2448 | __ bind(&call); |
| 2449 | } |
| 2450 | } else { |
| 2451 | VisitForStackValue(callee); |
| 2452 | // refEnv.WithBaseObject() |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2453 | PushOperand(isolate()->factory()->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2454 | } |
| 2455 | } |
| 2456 | |
| 2457 | |
| 2458 | void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2459 | // In a call to eval, we first call Runtime_ResolvePossiblyDirectEval |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2460 | // to resolve the function we need to call. Then we call the resolved |
| 2461 | // function using the given arguments. |
| 2462 | ZoneList<Expression*>* args = expr->arguments(); |
| 2463 | int arg_count = args->length(); |
| 2464 | |
| 2465 | PushCalleeAndWithBaseObject(expr); |
| 2466 | |
| 2467 | // Push the arguments. |
| 2468 | for (int i = 0; i < arg_count; i++) { |
| 2469 | VisitForStackValue(args->at(i)); |
| 2470 | } |
| 2471 | |
| 2472 | // Push a copy of the function (found below the arguments) and |
| 2473 | // resolve eval. |
| 2474 | __ push(Operand(esp, (arg_count + 1) * kPointerSize)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2475 | EmitResolvePossiblyDirectEval(expr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2476 | |
| 2477 | // Touch up the stack with the resolved function. |
| 2478 | __ mov(Operand(esp, (arg_count + 1) * kPointerSize), eax); |
| 2479 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2480 | PrepareForBailoutForId(expr->EvalId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2481 | |
| 2482 | SetCallPosition(expr); |
| 2483 | __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
| 2484 | __ Set(eax, arg_count); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2485 | __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
| 2486 | expr->tail_call_mode()), |
| 2487 | RelocInfo::CODE_TARGET); |
| 2488 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2489 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2490 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2491 | context()->DropAndPlug(1, eax); |
| 2492 | } |
| 2493 | |
| 2494 | |
| 2495 | void FullCodeGenerator::VisitCallNew(CallNew* expr) { |
| 2496 | Comment cmnt(masm_, "[ CallNew"); |
| 2497 | // According to ECMA-262, section 11.2.2, page 44, the function |
| 2498 | // expression in new calls must be evaluated before the |
| 2499 | // arguments. |
| 2500 | |
| 2501 | // Push constructor on the stack. If it's not a function it's used as |
| 2502 | // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is |
| 2503 | // ignored. |
| 2504 | DCHECK(!expr->expression()->IsSuperPropertyReference()); |
| 2505 | VisitForStackValue(expr->expression()); |
| 2506 | |
| 2507 | // Push the arguments ("left-to-right") on the stack. |
| 2508 | ZoneList<Expression*>* args = expr->arguments(); |
| 2509 | int arg_count = args->length(); |
| 2510 | for (int i = 0; i < arg_count; i++) { |
| 2511 | VisitForStackValue(args->at(i)); |
| 2512 | } |
| 2513 | |
| 2514 | // Call the construct call builtin that handles allocation and |
| 2515 | // constructor invocation. |
| 2516 | SetConstructCallPosition(expr); |
| 2517 | |
| 2518 | // Load function and argument count into edi and eax. |
| 2519 | __ Move(eax, Immediate(arg_count)); |
| 2520 | __ mov(edi, Operand(esp, arg_count * kPointerSize)); |
| 2521 | |
| 2522 | // Record call targets in unoptimized code. |
| 2523 | __ EmitLoadTypeFeedbackVector(ebx); |
| 2524 | __ mov(edx, Immediate(SmiFromSlot(expr->CallNewFeedbackSlot()))); |
| 2525 | |
| 2526 | CallConstructStub stub(isolate()); |
| 2527 | __ call(stub.GetCode(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2528 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2529 | PrepareForBailoutForId(expr->ReturnId(), BailoutState::TOS_REGISTER); |
| 2530 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2531 | context()->Plug(eax); |
| 2532 | } |
| 2533 | |
| 2534 | |
| 2535 | void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) { |
| 2536 | SuperCallReference* super_call_ref = |
| 2537 | expr->expression()->AsSuperCallReference(); |
| 2538 | DCHECK_NOT_NULL(super_call_ref); |
| 2539 | |
| 2540 | // Push the super constructor target on the stack (may be null, |
| 2541 | // but the Construct builtin can deal with that properly). |
| 2542 | VisitForAccumulatorValue(super_call_ref->this_function_var()); |
| 2543 | __ AssertFunction(result_register()); |
| 2544 | __ mov(result_register(), |
| 2545 | FieldOperand(result_register(), HeapObject::kMapOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2546 | PushOperand(FieldOperand(result_register(), Map::kPrototypeOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2547 | |
| 2548 | // Push the arguments ("left-to-right") on the stack. |
| 2549 | ZoneList<Expression*>* args = expr->arguments(); |
| 2550 | int arg_count = args->length(); |
| 2551 | for (int i = 0; i < arg_count; i++) { |
| 2552 | VisitForStackValue(args->at(i)); |
| 2553 | } |
| 2554 | |
| 2555 | // Call the construct call builtin that handles allocation and |
| 2556 | // constructor invocation. |
| 2557 | SetConstructCallPosition(expr); |
| 2558 | |
| 2559 | // Load new target into edx. |
| 2560 | VisitForAccumulatorValue(super_call_ref->new_target_var()); |
| 2561 | __ mov(edx, result_register()); |
| 2562 | |
| 2563 | // Load function and argument count into edi and eax. |
| 2564 | __ Move(eax, Immediate(arg_count)); |
| 2565 | __ mov(edi, Operand(esp, arg_count * kPointerSize)); |
| 2566 | |
| 2567 | __ Call(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2568 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2569 | |
| 2570 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2571 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2572 | context()->Plug(eax); |
| 2573 | } |
| 2574 | |
| 2575 | |
| 2576 | void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) { |
| 2577 | ZoneList<Expression*>* args = expr->arguments(); |
| 2578 | DCHECK(args->length() == 1); |
| 2579 | |
| 2580 | VisitForAccumulatorValue(args->at(0)); |
| 2581 | |
| 2582 | Label materialize_true, materialize_false; |
| 2583 | Label* if_true = NULL; |
| 2584 | Label* if_false = NULL; |
| 2585 | Label* fall_through = NULL; |
| 2586 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2587 | &if_true, &if_false, &fall_through); |
| 2588 | |
| 2589 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2590 | __ test(eax, Immediate(kSmiTagMask)); |
| 2591 | Split(zero, if_true, if_false, fall_through); |
| 2592 | |
| 2593 | context()->Plug(if_true, if_false); |
| 2594 | } |
| 2595 | |
| 2596 | |
| 2597 | void FullCodeGenerator::EmitIsJSReceiver(CallRuntime* expr) { |
| 2598 | ZoneList<Expression*>* args = expr->arguments(); |
| 2599 | DCHECK(args->length() == 1); |
| 2600 | |
| 2601 | VisitForAccumulatorValue(args->at(0)); |
| 2602 | |
| 2603 | Label materialize_true, materialize_false; |
| 2604 | Label* if_true = NULL; |
| 2605 | Label* if_false = NULL; |
| 2606 | Label* fall_through = NULL; |
| 2607 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2608 | &if_true, &if_false, &fall_through); |
| 2609 | |
| 2610 | __ JumpIfSmi(eax, if_false); |
| 2611 | __ CmpObjectType(eax, FIRST_JS_RECEIVER_TYPE, ebx); |
| 2612 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2613 | Split(above_equal, if_true, if_false, fall_through); |
| 2614 | |
| 2615 | context()->Plug(if_true, if_false); |
| 2616 | } |
| 2617 | |
| 2618 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2619 | void FullCodeGenerator::EmitIsArray(CallRuntime* expr) { |
| 2620 | ZoneList<Expression*>* args = expr->arguments(); |
| 2621 | DCHECK(args->length() == 1); |
| 2622 | |
| 2623 | VisitForAccumulatorValue(args->at(0)); |
| 2624 | |
| 2625 | Label materialize_true, materialize_false; |
| 2626 | Label* if_true = NULL; |
| 2627 | Label* if_false = NULL; |
| 2628 | Label* fall_through = NULL; |
| 2629 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2630 | &if_true, &if_false, &fall_through); |
| 2631 | |
| 2632 | __ JumpIfSmi(eax, if_false); |
| 2633 | __ CmpObjectType(eax, JS_ARRAY_TYPE, ebx); |
| 2634 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2635 | Split(equal, if_true, if_false, fall_through); |
| 2636 | |
| 2637 | context()->Plug(if_true, if_false); |
| 2638 | } |
| 2639 | |
| 2640 | |
| 2641 | void FullCodeGenerator::EmitIsTypedArray(CallRuntime* expr) { |
| 2642 | ZoneList<Expression*>* args = expr->arguments(); |
| 2643 | DCHECK(args->length() == 1); |
| 2644 | |
| 2645 | VisitForAccumulatorValue(args->at(0)); |
| 2646 | |
| 2647 | Label materialize_true, materialize_false; |
| 2648 | Label* if_true = NULL; |
| 2649 | Label* if_false = NULL; |
| 2650 | Label* fall_through = NULL; |
| 2651 | context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
| 2652 | &if_false, &fall_through); |
| 2653 | |
| 2654 | __ JumpIfSmi(eax, if_false); |
| 2655 | __ CmpObjectType(eax, JS_TYPED_ARRAY_TYPE, ebx); |
| 2656 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2657 | Split(equal, if_true, if_false, fall_through); |
| 2658 | |
| 2659 | context()->Plug(if_true, if_false); |
| 2660 | } |
| 2661 | |
| 2662 | |
| 2663 | void FullCodeGenerator::EmitIsRegExp(CallRuntime* expr) { |
| 2664 | ZoneList<Expression*>* args = expr->arguments(); |
| 2665 | DCHECK(args->length() == 1); |
| 2666 | |
| 2667 | VisitForAccumulatorValue(args->at(0)); |
| 2668 | |
| 2669 | Label materialize_true, materialize_false; |
| 2670 | Label* if_true = NULL; |
| 2671 | Label* if_false = NULL; |
| 2672 | Label* fall_through = NULL; |
| 2673 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2674 | &if_true, &if_false, &fall_through); |
| 2675 | |
| 2676 | __ JumpIfSmi(eax, if_false); |
| 2677 | __ CmpObjectType(eax, JS_REGEXP_TYPE, ebx); |
| 2678 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2679 | Split(equal, if_true, if_false, fall_through); |
| 2680 | |
| 2681 | context()->Plug(if_true, if_false); |
| 2682 | } |
| 2683 | |
| 2684 | |
| 2685 | void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) { |
| 2686 | ZoneList<Expression*>* args = expr->arguments(); |
| 2687 | DCHECK(args->length() == 1); |
| 2688 | |
| 2689 | VisitForAccumulatorValue(args->at(0)); |
| 2690 | |
| 2691 | Label materialize_true, materialize_false; |
| 2692 | Label* if_true = NULL; |
| 2693 | Label* if_false = NULL; |
| 2694 | Label* fall_through = NULL; |
| 2695 | context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
| 2696 | &if_false, &fall_through); |
| 2697 | |
| 2698 | __ JumpIfSmi(eax, if_false); |
| 2699 | __ CmpObjectType(eax, JS_PROXY_TYPE, ebx); |
| 2700 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2701 | Split(equal, if_true, if_false, fall_through); |
| 2702 | |
| 2703 | context()->Plug(if_true, if_false); |
| 2704 | } |
| 2705 | |
| 2706 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2707 | void FullCodeGenerator::EmitClassOf(CallRuntime* expr) { |
| 2708 | ZoneList<Expression*>* args = expr->arguments(); |
| 2709 | DCHECK(args->length() == 1); |
| 2710 | Label done, null, function, non_function_constructor; |
| 2711 | |
| 2712 | VisitForAccumulatorValue(args->at(0)); |
| 2713 | |
| 2714 | // If the object is not a JSReceiver, we return null. |
| 2715 | __ JumpIfSmi(eax, &null, Label::kNear); |
| 2716 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 2717 | __ CmpObjectType(eax, FIRST_JS_RECEIVER_TYPE, eax); |
| 2718 | __ j(below, &null, Label::kNear); |
| 2719 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2720 | // Return 'Function' for JSFunction and JSBoundFunction objects. |
| 2721 | __ CmpInstanceType(eax, FIRST_FUNCTION_TYPE); |
| 2722 | STATIC_ASSERT(LAST_FUNCTION_TYPE == LAST_TYPE); |
| 2723 | __ j(above_equal, &function, Label::kNear); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2724 | |
| 2725 | // Check if the constructor in the map is a JS function. |
| 2726 | __ GetMapConstructor(eax, eax, ebx); |
| 2727 | __ CmpInstanceType(ebx, JS_FUNCTION_TYPE); |
| 2728 | __ j(not_equal, &non_function_constructor, Label::kNear); |
| 2729 | |
| 2730 | // eax now contains the constructor function. Grab the |
| 2731 | // instance class name from there. |
| 2732 | __ mov(eax, FieldOperand(eax, JSFunction::kSharedFunctionInfoOffset)); |
| 2733 | __ mov(eax, FieldOperand(eax, SharedFunctionInfo::kInstanceClassNameOffset)); |
| 2734 | __ jmp(&done, Label::kNear); |
| 2735 | |
| 2736 | // Non-JS objects have class null. |
| 2737 | __ bind(&null); |
| 2738 | __ mov(eax, isolate()->factory()->null_value()); |
| 2739 | __ jmp(&done, Label::kNear); |
| 2740 | |
| 2741 | // Functions have class 'Function'. |
| 2742 | __ bind(&function); |
| 2743 | __ mov(eax, isolate()->factory()->Function_string()); |
| 2744 | __ jmp(&done, Label::kNear); |
| 2745 | |
| 2746 | // Objects with a non-function constructor have class 'Object'. |
| 2747 | __ bind(&non_function_constructor); |
| 2748 | __ mov(eax, isolate()->factory()->Object_string()); |
| 2749 | |
| 2750 | // All done. |
| 2751 | __ bind(&done); |
| 2752 | |
| 2753 | context()->Plug(eax); |
| 2754 | } |
| 2755 | |
| 2756 | |
| 2757 | void FullCodeGenerator::EmitValueOf(CallRuntime* expr) { |
| 2758 | ZoneList<Expression*>* args = expr->arguments(); |
| 2759 | DCHECK(args->length() == 1); |
| 2760 | |
| 2761 | VisitForAccumulatorValue(args->at(0)); // Load the object. |
| 2762 | |
| 2763 | Label done; |
| 2764 | // If the object is a smi return the object. |
| 2765 | __ JumpIfSmi(eax, &done, Label::kNear); |
| 2766 | // If the object is not a value type, return the object. |
| 2767 | __ CmpObjectType(eax, JS_VALUE_TYPE, ebx); |
| 2768 | __ j(not_equal, &done, Label::kNear); |
| 2769 | __ mov(eax, FieldOperand(eax, JSValue::kValueOffset)); |
| 2770 | |
| 2771 | __ bind(&done); |
| 2772 | context()->Plug(eax); |
| 2773 | } |
| 2774 | |
| 2775 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2776 | void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { |
| 2777 | ZoneList<Expression*>* args = expr->arguments(); |
| 2778 | DCHECK(args->length() == 1); |
| 2779 | |
| 2780 | VisitForAccumulatorValue(args->at(0)); |
| 2781 | |
| 2782 | Label done; |
| 2783 | StringCharFromCodeGenerator generator(eax, ebx); |
| 2784 | generator.GenerateFast(masm_); |
| 2785 | __ jmp(&done); |
| 2786 | |
| 2787 | NopRuntimeCallHelper call_helper; |
| 2788 | generator.GenerateSlow(masm_, call_helper); |
| 2789 | |
| 2790 | __ bind(&done); |
| 2791 | context()->Plug(ebx); |
| 2792 | } |
| 2793 | |
| 2794 | |
| 2795 | void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) { |
| 2796 | ZoneList<Expression*>* args = expr->arguments(); |
| 2797 | DCHECK(args->length() == 2); |
| 2798 | |
| 2799 | VisitForStackValue(args->at(0)); |
| 2800 | VisitForAccumulatorValue(args->at(1)); |
| 2801 | |
| 2802 | Register object = ebx; |
| 2803 | Register index = eax; |
| 2804 | Register result = edx; |
| 2805 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2806 | PopOperand(object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2807 | |
| 2808 | Label need_conversion; |
| 2809 | Label index_out_of_range; |
| 2810 | Label done; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2811 | StringCharCodeAtGenerator generator(object, index, result, &need_conversion, |
| 2812 | &need_conversion, &index_out_of_range); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2813 | generator.GenerateFast(masm_); |
| 2814 | __ jmp(&done); |
| 2815 | |
| 2816 | __ bind(&index_out_of_range); |
| 2817 | // When the index is out of range, the spec requires us to return |
| 2818 | // NaN. |
| 2819 | __ Move(result, Immediate(isolate()->factory()->nan_value())); |
| 2820 | __ jmp(&done); |
| 2821 | |
| 2822 | __ bind(&need_conversion); |
| 2823 | // Move the undefined value into the result register, which will |
| 2824 | // trigger conversion. |
| 2825 | __ Move(result, Immediate(isolate()->factory()->undefined_value())); |
| 2826 | __ jmp(&done); |
| 2827 | |
| 2828 | NopRuntimeCallHelper call_helper; |
| 2829 | generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); |
| 2830 | |
| 2831 | __ bind(&done); |
| 2832 | context()->Plug(result); |
| 2833 | } |
| 2834 | |
| 2835 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2836 | void FullCodeGenerator::EmitCall(CallRuntime* expr) { |
| 2837 | ZoneList<Expression*>* args = expr->arguments(); |
| 2838 | DCHECK_LE(2, args->length()); |
| 2839 | // Push target, receiver and arguments onto the stack. |
| 2840 | for (Expression* const arg : *args) { |
| 2841 | VisitForStackValue(arg); |
| 2842 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2843 | PrepareForBailoutForId(expr->CallId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2844 | // Move target to edi. |
| 2845 | int const argc = args->length() - 2; |
| 2846 | __ mov(edi, Operand(esp, (argc + 1) * kPointerSize)); |
| 2847 | // Call the target. |
| 2848 | __ mov(eax, Immediate(argc)); |
| 2849 | __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2850 | OperandStackDepthDecrement(argc + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2851 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2852 | // Discard the function left on TOS. |
| 2853 | context()->DropAndPlug(1, eax); |
| 2854 | } |
| 2855 | |
| 2856 | |
| 2857 | void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) { |
| 2858 | ZoneList<Expression*>* args = expr->arguments(); |
| 2859 | DCHECK(args->length() == 1); |
| 2860 | |
| 2861 | VisitForAccumulatorValue(args->at(0)); |
| 2862 | |
| 2863 | __ AssertString(eax); |
| 2864 | |
| 2865 | Label materialize_true, materialize_false; |
| 2866 | Label* if_true = NULL; |
| 2867 | Label* if_false = NULL; |
| 2868 | Label* fall_through = NULL; |
| 2869 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2870 | &if_true, &if_false, &fall_through); |
| 2871 | |
| 2872 | __ test(FieldOperand(eax, String::kHashFieldOffset), |
| 2873 | Immediate(String::kContainsCachedArrayIndexMask)); |
| 2874 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2875 | Split(zero, if_true, if_false, fall_through); |
| 2876 | |
| 2877 | context()->Plug(if_true, if_false); |
| 2878 | } |
| 2879 | |
| 2880 | |
| 2881 | void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { |
| 2882 | ZoneList<Expression*>* args = expr->arguments(); |
| 2883 | DCHECK(args->length() == 1); |
| 2884 | VisitForAccumulatorValue(args->at(0)); |
| 2885 | |
| 2886 | __ AssertString(eax); |
| 2887 | |
| 2888 | __ mov(eax, FieldOperand(eax, String::kHashFieldOffset)); |
| 2889 | __ IndexFromHash(eax, eax); |
| 2890 | |
| 2891 | context()->Plug(eax); |
| 2892 | } |
| 2893 | |
| 2894 | |
| 2895 | void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) { |
| 2896 | ZoneList<Expression*>* args = expr->arguments(); |
| 2897 | DCHECK_EQ(1, args->length()); |
| 2898 | VisitForAccumulatorValue(args->at(0)); |
| 2899 | __ AssertFunction(eax); |
| 2900 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 2901 | __ mov(eax, FieldOperand(eax, Map::kPrototypeOffset)); |
| 2902 | context()->Plug(eax); |
| 2903 | } |
| 2904 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2905 | void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) { |
| 2906 | DCHECK(expr->arguments()->length() == 0); |
| 2907 | ExternalReference debug_is_active = |
| 2908 | ExternalReference::debug_is_active_address(isolate()); |
| 2909 | __ movzx_b(eax, Operand::StaticVariable(debug_is_active)); |
| 2910 | __ SmiTag(eax); |
| 2911 | context()->Plug(eax); |
| 2912 | } |
| 2913 | |
| 2914 | |
| 2915 | void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) { |
| 2916 | ZoneList<Expression*>* args = expr->arguments(); |
| 2917 | DCHECK_EQ(2, args->length()); |
| 2918 | VisitForStackValue(args->at(0)); |
| 2919 | VisitForStackValue(args->at(1)); |
| 2920 | |
| 2921 | Label runtime, done; |
| 2922 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2923 | __ Allocate(JSIteratorResult::kSize, eax, ecx, edx, &runtime, |
| 2924 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2925 | __ mov(ebx, NativeContextOperand()); |
| 2926 | __ mov(ebx, ContextOperand(ebx, Context::ITERATOR_RESULT_MAP_INDEX)); |
| 2927 | __ mov(FieldOperand(eax, HeapObject::kMapOffset), ebx); |
| 2928 | __ mov(FieldOperand(eax, JSObject::kPropertiesOffset), |
| 2929 | isolate()->factory()->empty_fixed_array()); |
| 2930 | __ mov(FieldOperand(eax, JSObject::kElementsOffset), |
| 2931 | isolate()->factory()->empty_fixed_array()); |
| 2932 | __ pop(FieldOperand(eax, JSIteratorResult::kDoneOffset)); |
| 2933 | __ pop(FieldOperand(eax, JSIteratorResult::kValueOffset)); |
| 2934 | STATIC_ASSERT(JSIteratorResult::kSize == 5 * kPointerSize); |
| 2935 | __ jmp(&done, Label::kNear); |
| 2936 | |
| 2937 | __ bind(&runtime); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2938 | CallRuntimeWithOperands(Runtime::kCreateIterResultObject); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2939 | |
| 2940 | __ bind(&done); |
| 2941 | context()->Plug(eax); |
| 2942 | } |
| 2943 | |
| 2944 | |
| 2945 | void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2946 | // Push function. |
| 2947 | __ LoadGlobalFunction(expr->context_index(), eax); |
| 2948 | PushOperand(eax); |
| 2949 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2950 | // Push undefined as receiver. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2951 | PushOperand(isolate()->factory()->undefined_value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2952 | } |
| 2953 | |
| 2954 | |
| 2955 | void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) { |
| 2956 | ZoneList<Expression*>* args = expr->arguments(); |
| 2957 | int arg_count = args->length(); |
| 2958 | |
| 2959 | SetCallPosition(expr); |
| 2960 | __ mov(edi, Operand(esp, (arg_count + 1) * kPointerSize)); |
| 2961 | __ Set(eax, arg_count); |
| 2962 | __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kNullOrUndefined), |
| 2963 | RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2964 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2965 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2966 | } |
| 2967 | |
| 2968 | |
| 2969 | void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
| 2970 | switch (expr->op()) { |
| 2971 | case Token::DELETE: { |
| 2972 | Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); |
| 2973 | Property* property = expr->expression()->AsProperty(); |
| 2974 | VariableProxy* proxy = expr->expression()->AsVariableProxy(); |
| 2975 | |
| 2976 | if (property != NULL) { |
| 2977 | VisitForStackValue(property->obj()); |
| 2978 | VisitForStackValue(property->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2979 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 2980 | ? Runtime::kDeleteProperty_Strict |
| 2981 | : Runtime::kDeleteProperty_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2982 | context()->Plug(eax); |
| 2983 | } else if (proxy != NULL) { |
| 2984 | Variable* var = proxy->var(); |
| 2985 | // Delete of an unqualified identifier is disallowed in strict mode but |
| 2986 | // "delete this" is allowed. |
| 2987 | bool is_this = var->HasThisName(isolate()); |
| 2988 | DCHECK(is_sloppy(language_mode()) || is_this); |
| 2989 | if (var->IsUnallocatedOrGlobalSlot()) { |
| 2990 | __ mov(eax, NativeContextOperand()); |
| 2991 | __ push(ContextOperand(eax, Context::EXTENSION_INDEX)); |
| 2992 | __ push(Immediate(var->name())); |
| 2993 | __ CallRuntime(Runtime::kDeleteProperty_Sloppy); |
| 2994 | context()->Plug(eax); |
| 2995 | } else if (var->IsStackAllocated() || var->IsContextSlot()) { |
| 2996 | // Result of deleting non-global variables is false. 'this' is |
| 2997 | // not really a variable, though we implement it as one. The |
| 2998 | // subexpression does not have side effects. |
| 2999 | context()->Plug(is_this); |
| 3000 | } else { |
| 3001 | // Non-global variable. Call the runtime to try to delete from the |
| 3002 | // context where the variable was introduced. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3003 | __ Push(var->name()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3004 | __ CallRuntime(Runtime::kDeleteLookupSlot); |
| 3005 | context()->Plug(eax); |
| 3006 | } |
| 3007 | } else { |
| 3008 | // Result of deleting non-property, non-variable reference is true. |
| 3009 | // The subexpression may have side effects. |
| 3010 | VisitForEffect(expr->expression()); |
| 3011 | context()->Plug(true); |
| 3012 | } |
| 3013 | break; |
| 3014 | } |
| 3015 | |
| 3016 | case Token::VOID: { |
| 3017 | Comment cmnt(masm_, "[ UnaryOperation (VOID)"); |
| 3018 | VisitForEffect(expr->expression()); |
| 3019 | context()->Plug(isolate()->factory()->undefined_value()); |
| 3020 | break; |
| 3021 | } |
| 3022 | |
| 3023 | case Token::NOT: { |
| 3024 | Comment cmnt(masm_, "[ UnaryOperation (NOT)"); |
| 3025 | if (context()->IsEffect()) { |
| 3026 | // Unary NOT has no side effects so it's only necessary to visit the |
| 3027 | // subexpression. Match the optimizing compiler by not branching. |
| 3028 | VisitForEffect(expr->expression()); |
| 3029 | } else if (context()->IsTest()) { |
| 3030 | const TestContext* test = TestContext::cast(context()); |
| 3031 | // The labels are swapped for the recursive call. |
| 3032 | VisitForControl(expr->expression(), |
| 3033 | test->false_label(), |
| 3034 | test->true_label(), |
| 3035 | test->fall_through()); |
| 3036 | context()->Plug(test->true_label(), test->false_label()); |
| 3037 | } else { |
| 3038 | // We handle value contexts explicitly rather than simply visiting |
| 3039 | // for control and plugging the control flow into the context, |
| 3040 | // because we need to prepare a pair of extra administrative AST ids |
| 3041 | // for the optimizing compiler. |
| 3042 | DCHECK(context()->IsAccumulatorValue() || context()->IsStackValue()); |
| 3043 | Label materialize_true, materialize_false, done; |
| 3044 | VisitForControl(expr->expression(), |
| 3045 | &materialize_false, |
| 3046 | &materialize_true, |
| 3047 | &materialize_true); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3048 | if (!context()->IsAccumulatorValue()) OperandStackDepthIncrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3049 | __ bind(&materialize_true); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3050 | PrepareForBailoutForId(expr->MaterializeTrueId(), |
| 3051 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3052 | if (context()->IsAccumulatorValue()) { |
| 3053 | __ mov(eax, isolate()->factory()->true_value()); |
| 3054 | } else { |
| 3055 | __ Push(isolate()->factory()->true_value()); |
| 3056 | } |
| 3057 | __ jmp(&done, Label::kNear); |
| 3058 | __ bind(&materialize_false); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3059 | PrepareForBailoutForId(expr->MaterializeFalseId(), |
| 3060 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3061 | if (context()->IsAccumulatorValue()) { |
| 3062 | __ mov(eax, isolate()->factory()->false_value()); |
| 3063 | } else { |
| 3064 | __ Push(isolate()->factory()->false_value()); |
| 3065 | } |
| 3066 | __ bind(&done); |
| 3067 | } |
| 3068 | break; |
| 3069 | } |
| 3070 | |
| 3071 | case Token::TYPEOF: { |
| 3072 | Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
| 3073 | { |
| 3074 | AccumulatorValueContext context(this); |
| 3075 | VisitForTypeofValue(expr->expression()); |
| 3076 | } |
| 3077 | __ mov(ebx, eax); |
| 3078 | TypeofStub typeof_stub(isolate()); |
| 3079 | __ CallStub(&typeof_stub); |
| 3080 | context()->Plug(eax); |
| 3081 | break; |
| 3082 | } |
| 3083 | |
| 3084 | default: |
| 3085 | UNREACHABLE(); |
| 3086 | } |
| 3087 | } |
| 3088 | |
| 3089 | |
| 3090 | void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { |
| 3091 | DCHECK(expr->expression()->IsValidReferenceExpressionOrThis()); |
| 3092 | |
| 3093 | Comment cmnt(masm_, "[ CountOperation"); |
| 3094 | |
| 3095 | Property* prop = expr->expression()->AsProperty(); |
| 3096 | LhsKind assign_type = Property::GetAssignType(prop); |
| 3097 | |
| 3098 | // Evaluate expression and get value. |
| 3099 | if (assign_type == VARIABLE) { |
| 3100 | DCHECK(expr->expression()->AsVariableProxy()->var() != NULL); |
| 3101 | AccumulatorValueContext context(this); |
| 3102 | EmitVariableLoad(expr->expression()->AsVariableProxy()); |
| 3103 | } else { |
| 3104 | // Reserve space for result of postfix operation. |
| 3105 | if (expr->is_postfix() && !context()->IsEffect()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3106 | PushOperand(Smi::FromInt(0)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3107 | } |
| 3108 | switch (assign_type) { |
| 3109 | case NAMED_PROPERTY: { |
| 3110 | // Put the object both on the stack and in the register. |
| 3111 | VisitForStackValue(prop->obj()); |
| 3112 | __ mov(LoadDescriptor::ReceiverRegister(), Operand(esp, 0)); |
| 3113 | EmitNamedPropertyLoad(prop); |
| 3114 | break; |
| 3115 | } |
| 3116 | |
| 3117 | case NAMED_SUPER_PROPERTY: { |
| 3118 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 3119 | VisitForAccumulatorValue( |
| 3120 | prop->obj()->AsSuperPropertyReference()->home_object()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3121 | PushOperand(result_register()); |
| 3122 | PushOperand(MemOperand(esp, kPointerSize)); |
| 3123 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3124 | EmitNamedSuperPropertyLoad(prop); |
| 3125 | break; |
| 3126 | } |
| 3127 | |
| 3128 | case KEYED_SUPER_PROPERTY: { |
| 3129 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 3130 | VisitForStackValue( |
| 3131 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 3132 | VisitForAccumulatorValue(prop->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3133 | PushOperand(result_register()); |
| 3134 | PushOperand(MemOperand(esp, 2 * kPointerSize)); |
| 3135 | PushOperand(MemOperand(esp, 2 * kPointerSize)); |
| 3136 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3137 | EmitKeyedSuperPropertyLoad(prop); |
| 3138 | break; |
| 3139 | } |
| 3140 | |
| 3141 | case KEYED_PROPERTY: { |
| 3142 | VisitForStackValue(prop->obj()); |
| 3143 | VisitForStackValue(prop->key()); |
| 3144 | __ mov(LoadDescriptor::ReceiverRegister(), |
| 3145 | Operand(esp, kPointerSize)); // Object. |
| 3146 | __ mov(LoadDescriptor::NameRegister(), Operand(esp, 0)); // Key. |
| 3147 | EmitKeyedPropertyLoad(prop); |
| 3148 | break; |
| 3149 | } |
| 3150 | |
| 3151 | case VARIABLE: |
| 3152 | UNREACHABLE(); |
| 3153 | } |
| 3154 | } |
| 3155 | |
| 3156 | // We need a second deoptimization point after loading the value |
| 3157 | // in case evaluating the property load my have a side effect. |
| 3158 | if (assign_type == VARIABLE) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3159 | PrepareForBailout(expr->expression(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3160 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3161 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3162 | } |
| 3163 | |
| 3164 | // Inline smi case if we are in a loop. |
| 3165 | Label done, stub_call; |
| 3166 | JumpPatchSite patch_site(masm_); |
| 3167 | if (ShouldInlineSmiCase(expr->op())) { |
| 3168 | Label slow; |
| 3169 | patch_site.EmitJumpIfNotSmi(eax, &slow, Label::kNear); |
| 3170 | |
| 3171 | // Save result for postfix expressions. |
| 3172 | if (expr->is_postfix()) { |
| 3173 | if (!context()->IsEffect()) { |
| 3174 | // Save the result on the stack. If we have a named or keyed property |
| 3175 | // we store the result under the receiver that is currently on top |
| 3176 | // of the stack. |
| 3177 | switch (assign_type) { |
| 3178 | case VARIABLE: |
| 3179 | __ push(eax); |
| 3180 | break; |
| 3181 | case NAMED_PROPERTY: |
| 3182 | __ mov(Operand(esp, kPointerSize), eax); |
| 3183 | break; |
| 3184 | case NAMED_SUPER_PROPERTY: |
| 3185 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 3186 | break; |
| 3187 | case KEYED_PROPERTY: |
| 3188 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 3189 | break; |
| 3190 | case KEYED_SUPER_PROPERTY: |
| 3191 | __ mov(Operand(esp, 3 * kPointerSize), eax); |
| 3192 | break; |
| 3193 | } |
| 3194 | } |
| 3195 | } |
| 3196 | |
| 3197 | if (expr->op() == Token::INC) { |
| 3198 | __ add(eax, Immediate(Smi::FromInt(1))); |
| 3199 | } else { |
| 3200 | __ sub(eax, Immediate(Smi::FromInt(1))); |
| 3201 | } |
| 3202 | __ j(no_overflow, &done, Label::kNear); |
| 3203 | // Call stub. Undo operation first. |
| 3204 | if (expr->op() == Token::INC) { |
| 3205 | __ sub(eax, Immediate(Smi::FromInt(1))); |
| 3206 | } else { |
| 3207 | __ add(eax, Immediate(Smi::FromInt(1))); |
| 3208 | } |
| 3209 | __ jmp(&stub_call, Label::kNear); |
| 3210 | __ bind(&slow); |
| 3211 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3212 | |
| 3213 | // Convert old value into a number. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 3214 | __ Call(isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3215 | PrepareForBailoutForId(expr->ToNumberId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3216 | |
| 3217 | // Save result for postfix expressions. |
| 3218 | if (expr->is_postfix()) { |
| 3219 | if (!context()->IsEffect()) { |
| 3220 | // Save the result on the stack. If we have a named or keyed property |
| 3221 | // we store the result under the receiver that is currently on top |
| 3222 | // of the stack. |
| 3223 | switch (assign_type) { |
| 3224 | case VARIABLE: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3225 | PushOperand(eax); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3226 | break; |
| 3227 | case NAMED_PROPERTY: |
| 3228 | __ mov(Operand(esp, kPointerSize), eax); |
| 3229 | break; |
| 3230 | case NAMED_SUPER_PROPERTY: |
| 3231 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 3232 | break; |
| 3233 | case KEYED_PROPERTY: |
| 3234 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 3235 | break; |
| 3236 | case KEYED_SUPER_PROPERTY: |
| 3237 | __ mov(Operand(esp, 3 * kPointerSize), eax); |
| 3238 | break; |
| 3239 | } |
| 3240 | } |
| 3241 | } |
| 3242 | |
| 3243 | SetExpressionPosition(expr); |
| 3244 | |
| 3245 | // Call stub for +1/-1. |
| 3246 | __ bind(&stub_call); |
| 3247 | __ mov(edx, eax); |
| 3248 | __ mov(eax, Immediate(Smi::FromInt(1))); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3249 | Handle<Code> code = |
| 3250 | CodeFactory::BinaryOpIC(isolate(), expr->binary_op()).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3251 | CallIC(code, expr->CountBinOpFeedbackId()); |
| 3252 | patch_site.EmitPatchInfo(); |
| 3253 | __ bind(&done); |
| 3254 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3255 | // Store the value returned in eax. |
| 3256 | switch (assign_type) { |
| 3257 | case VARIABLE: |
| 3258 | if (expr->is_postfix()) { |
| 3259 | // Perform the assignment as if via '='. |
| 3260 | { EffectContext context(this); |
| 3261 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 3262 | Token::ASSIGN, expr->CountSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3263 | PrepareForBailoutForId(expr->AssignmentId(), |
| 3264 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3265 | context.Plug(eax); |
| 3266 | } |
| 3267 | // For all contexts except EffectContext We have the result on |
| 3268 | // top of the stack. |
| 3269 | if (!context()->IsEffect()) { |
| 3270 | context()->PlugTOS(); |
| 3271 | } |
| 3272 | } else { |
| 3273 | // Perform the assignment as if via '='. |
| 3274 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 3275 | Token::ASSIGN, expr->CountSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3276 | PrepareForBailoutForId(expr->AssignmentId(), |
| 3277 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3278 | context()->Plug(eax); |
| 3279 | } |
| 3280 | break; |
| 3281 | case NAMED_PROPERTY: { |
| 3282 | __ mov(StoreDescriptor::NameRegister(), |
| 3283 | prop->key()->AsLiteral()->value()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3284 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3285 | EmitLoadStoreICSlot(expr->CountSlot()); |
| 3286 | CallStoreIC(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3287 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3288 | if (expr->is_postfix()) { |
| 3289 | if (!context()->IsEffect()) { |
| 3290 | context()->PlugTOS(); |
| 3291 | } |
| 3292 | } else { |
| 3293 | context()->Plug(eax); |
| 3294 | } |
| 3295 | break; |
| 3296 | } |
| 3297 | case NAMED_SUPER_PROPERTY: { |
| 3298 | EmitNamedSuperPropertyStore(prop); |
| 3299 | if (expr->is_postfix()) { |
| 3300 | if (!context()->IsEffect()) { |
| 3301 | context()->PlugTOS(); |
| 3302 | } |
| 3303 | } else { |
| 3304 | context()->Plug(eax); |
| 3305 | } |
| 3306 | break; |
| 3307 | } |
| 3308 | case KEYED_SUPER_PROPERTY: { |
| 3309 | EmitKeyedSuperPropertyStore(prop); |
| 3310 | if (expr->is_postfix()) { |
| 3311 | if (!context()->IsEffect()) { |
| 3312 | context()->PlugTOS(); |
| 3313 | } |
| 3314 | } else { |
| 3315 | context()->Plug(eax); |
| 3316 | } |
| 3317 | break; |
| 3318 | } |
| 3319 | case KEYED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3320 | PopOperand(StoreDescriptor::NameRegister()); |
| 3321 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3322 | Handle<Code> ic = |
| 3323 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 3324 | EmitLoadStoreICSlot(expr->CountSlot()); |
| 3325 | CallIC(ic); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3326 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3327 | if (expr->is_postfix()) { |
| 3328 | // Result is on the stack |
| 3329 | if (!context()->IsEffect()) { |
| 3330 | context()->PlugTOS(); |
| 3331 | } |
| 3332 | } else { |
| 3333 | context()->Plug(eax); |
| 3334 | } |
| 3335 | break; |
| 3336 | } |
| 3337 | } |
| 3338 | } |
| 3339 | |
| 3340 | |
| 3341 | void FullCodeGenerator::EmitLiteralCompareTypeof(Expression* expr, |
| 3342 | Expression* sub_expr, |
| 3343 | Handle<String> check) { |
| 3344 | Label materialize_true, materialize_false; |
| 3345 | Label* if_true = NULL; |
| 3346 | Label* if_false = NULL; |
| 3347 | Label* fall_through = NULL; |
| 3348 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3349 | &if_true, &if_false, &fall_through); |
| 3350 | |
| 3351 | { AccumulatorValueContext context(this); |
| 3352 | VisitForTypeofValue(sub_expr); |
| 3353 | } |
| 3354 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3355 | |
| 3356 | Factory* factory = isolate()->factory(); |
| 3357 | if (String::Equals(check, factory->number_string())) { |
| 3358 | __ JumpIfSmi(eax, if_true); |
| 3359 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), |
| 3360 | isolate()->factory()->heap_number_map()); |
| 3361 | Split(equal, if_true, if_false, fall_through); |
| 3362 | } else if (String::Equals(check, factory->string_string())) { |
| 3363 | __ JumpIfSmi(eax, if_false); |
| 3364 | __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, edx); |
| 3365 | Split(below, if_true, if_false, fall_through); |
| 3366 | } else if (String::Equals(check, factory->symbol_string())) { |
| 3367 | __ JumpIfSmi(eax, if_false); |
| 3368 | __ CmpObjectType(eax, SYMBOL_TYPE, edx); |
| 3369 | Split(equal, if_true, if_false, fall_through); |
| 3370 | } else if (String::Equals(check, factory->boolean_string())) { |
| 3371 | __ cmp(eax, isolate()->factory()->true_value()); |
| 3372 | __ j(equal, if_true); |
| 3373 | __ cmp(eax, isolate()->factory()->false_value()); |
| 3374 | Split(equal, if_true, if_false, fall_through); |
| 3375 | } else if (String::Equals(check, factory->undefined_string())) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3376 | __ cmp(eax, isolate()->factory()->null_value()); |
| 3377 | __ j(equal, if_false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3378 | __ JumpIfSmi(eax, if_false); |
| 3379 | // Check for undetectable objects => true. |
| 3380 | __ mov(edx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 3381 | __ test_b(FieldOperand(edx, Map::kBitFieldOffset), |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3382 | Immediate(1 << Map::kIsUndetectable)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3383 | Split(not_zero, if_true, if_false, fall_through); |
| 3384 | } else if (String::Equals(check, factory->function_string())) { |
| 3385 | __ JumpIfSmi(eax, if_false); |
| 3386 | // Check for callable and not undetectable objects => true. |
| 3387 | __ mov(edx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 3388 | __ movzx_b(ecx, FieldOperand(edx, Map::kBitFieldOffset)); |
| 3389 | __ and_(ecx, (1 << Map::kIsCallable) | (1 << Map::kIsUndetectable)); |
| 3390 | __ cmp(ecx, 1 << Map::kIsCallable); |
| 3391 | Split(equal, if_true, if_false, fall_through); |
| 3392 | } else if (String::Equals(check, factory->object_string())) { |
| 3393 | __ JumpIfSmi(eax, if_false); |
| 3394 | __ cmp(eax, isolate()->factory()->null_value()); |
| 3395 | __ j(equal, if_true); |
| 3396 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 3397 | __ CmpObjectType(eax, FIRST_JS_RECEIVER_TYPE, edx); |
| 3398 | __ j(below, if_false); |
| 3399 | // Check for callable or undetectable objects => false. |
| 3400 | __ test_b(FieldOperand(edx, Map::kBitFieldOffset), |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3401 | Immediate((1 << Map::kIsCallable) | (1 << Map::kIsUndetectable))); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3402 | Split(zero, if_true, if_false, fall_through); |
| 3403 | // clang-format off |
| 3404 | #define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type) \ |
| 3405 | } else if (String::Equals(check, factory->type##_string())) { \ |
| 3406 | __ JumpIfSmi(eax, if_false); \ |
| 3407 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), \ |
| 3408 | isolate()->factory()->type##_map()); \ |
| 3409 | Split(equal, if_true, if_false, fall_through); |
| 3410 | SIMD128_TYPES(SIMD128_TYPE) |
| 3411 | #undef SIMD128_TYPE |
| 3412 | // clang-format on |
| 3413 | } else { |
| 3414 | if (if_false != fall_through) __ jmp(if_false); |
| 3415 | } |
| 3416 | context()->Plug(if_true, if_false); |
| 3417 | } |
| 3418 | |
| 3419 | |
| 3420 | void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { |
| 3421 | Comment cmnt(masm_, "[ CompareOperation"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3422 | |
| 3423 | // First we try a fast inlined version of the compare when one of |
| 3424 | // the operands is a literal. |
| 3425 | if (TryLiteralCompare(expr)) return; |
| 3426 | |
| 3427 | // Always perform the comparison for its control flow. Pack the result |
| 3428 | // into the expression's context after the comparison is performed. |
| 3429 | Label materialize_true, materialize_false; |
| 3430 | Label* if_true = NULL; |
| 3431 | Label* if_false = NULL; |
| 3432 | Label* fall_through = NULL; |
| 3433 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3434 | &if_true, &if_false, &fall_through); |
| 3435 | |
| 3436 | Token::Value op = expr->op(); |
| 3437 | VisitForStackValue(expr->left()); |
| 3438 | switch (op) { |
| 3439 | case Token::IN: |
| 3440 | VisitForStackValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3441 | SetExpressionPosition(expr); |
| 3442 | EmitHasProperty(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3443 | PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| 3444 | __ cmp(eax, isolate()->factory()->true_value()); |
| 3445 | Split(equal, if_true, if_false, fall_through); |
| 3446 | break; |
| 3447 | |
| 3448 | case Token::INSTANCEOF: { |
| 3449 | VisitForAccumulatorValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3450 | SetExpressionPosition(expr); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3451 | PopOperand(edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3452 | InstanceOfStub stub(isolate()); |
| 3453 | __ CallStub(&stub); |
| 3454 | PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| 3455 | __ cmp(eax, isolate()->factory()->true_value()); |
| 3456 | Split(equal, if_true, if_false, fall_through); |
| 3457 | break; |
| 3458 | } |
| 3459 | |
| 3460 | default: { |
| 3461 | VisitForAccumulatorValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3462 | SetExpressionPosition(expr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3463 | Condition cc = CompareIC::ComputeCondition(op); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3464 | PopOperand(edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3465 | |
| 3466 | bool inline_smi_code = ShouldInlineSmiCase(op); |
| 3467 | JumpPatchSite patch_site(masm_); |
| 3468 | if (inline_smi_code) { |
| 3469 | Label slow_case; |
| 3470 | __ mov(ecx, edx); |
| 3471 | __ or_(ecx, eax); |
| 3472 | patch_site.EmitJumpIfNotSmi(ecx, &slow_case, Label::kNear); |
| 3473 | __ cmp(edx, eax); |
| 3474 | Split(cc, if_true, if_false, NULL); |
| 3475 | __ bind(&slow_case); |
| 3476 | } |
| 3477 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3478 | Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3479 | CallIC(ic, expr->CompareOperationFeedbackId()); |
| 3480 | patch_site.EmitPatchInfo(); |
| 3481 | |
| 3482 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3483 | __ test(eax, eax); |
| 3484 | Split(cc, if_true, if_false, fall_through); |
| 3485 | } |
| 3486 | } |
| 3487 | |
| 3488 | // Convert the result of the comparison into one expected for this |
| 3489 | // expression's context. |
| 3490 | context()->Plug(if_true, if_false); |
| 3491 | } |
| 3492 | |
| 3493 | |
| 3494 | void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr, |
| 3495 | Expression* sub_expr, |
| 3496 | NilValue nil) { |
| 3497 | Label materialize_true, materialize_false; |
| 3498 | Label* if_true = NULL; |
| 3499 | Label* if_false = NULL; |
| 3500 | Label* fall_through = NULL; |
| 3501 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3502 | &if_true, &if_false, &fall_through); |
| 3503 | |
| 3504 | VisitForAccumulatorValue(sub_expr); |
| 3505 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3506 | |
| 3507 | Handle<Object> nil_value = nil == kNullValue |
| 3508 | ? isolate()->factory()->null_value() |
| 3509 | : isolate()->factory()->undefined_value(); |
| 3510 | if (expr->op() == Token::EQ_STRICT) { |
| 3511 | __ cmp(eax, nil_value); |
| 3512 | Split(equal, if_true, if_false, fall_through); |
| 3513 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3514 | __ JumpIfSmi(eax, if_false); |
| 3515 | __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset)); |
| 3516 | __ test_b(FieldOperand(eax, Map::kBitFieldOffset), |
| 3517 | Immediate(1 << Map::kIsUndetectable)); |
| 3518 | Split(not_zero, if_true, if_false, fall_through); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3519 | } |
| 3520 | context()->Plug(if_true, if_false); |
| 3521 | } |
| 3522 | |
| 3523 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3524 | Register FullCodeGenerator::result_register() { |
| 3525 | return eax; |
| 3526 | } |
| 3527 | |
| 3528 | |
| 3529 | Register FullCodeGenerator::context_register() { |
| 3530 | return esi; |
| 3531 | } |
| 3532 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3533 | void FullCodeGenerator::LoadFromFrameField(int frame_offset, Register value) { |
| 3534 | DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 3535 | __ mov(value, Operand(ebp, frame_offset)); |
| 3536 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3537 | |
| 3538 | void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
| 3539 | DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 3540 | __ mov(Operand(ebp, frame_offset), value); |
| 3541 | } |
| 3542 | |
| 3543 | |
| 3544 | void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| 3545 | __ mov(dst, ContextOperand(esi, context_index)); |
| 3546 | } |
| 3547 | |
| 3548 | |
| 3549 | void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
| 3550 | Scope* closure_scope = scope()->ClosureScope(); |
| 3551 | if (closure_scope->is_script_scope() || |
| 3552 | closure_scope->is_module_scope()) { |
| 3553 | // Contexts nested in the native context have a canonical empty function |
| 3554 | // as their closure, not the anonymous closure containing the global |
| 3555 | // code. |
| 3556 | __ mov(eax, NativeContextOperand()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3557 | PushOperand(ContextOperand(eax, Context::CLOSURE_INDEX)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3558 | } else if (closure_scope->is_eval_scope()) { |
| 3559 | // Contexts nested inside eval code have the same closure as the context |
| 3560 | // calling eval, not the anonymous closure containing the eval code. |
| 3561 | // Fetch it from the context. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3562 | PushOperand(ContextOperand(esi, Context::CLOSURE_INDEX)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3563 | } else { |
| 3564 | DCHECK(closure_scope->is_function_scope()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3565 | PushOperand(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3566 | } |
| 3567 | } |
| 3568 | |
| 3569 | |
| 3570 | // ---------------------------------------------------------------------------- |
| 3571 | // Non-local control flow support. |
| 3572 | |
| 3573 | void FullCodeGenerator::EnterFinallyBlock() { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3574 | // Store pending message while executing finally block. |
| 3575 | ExternalReference pending_message_obj = |
| 3576 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3577 | __ mov(edx, Operand::StaticVariable(pending_message_obj)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3578 | PushOperand(edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3579 | |
| 3580 | ClearPendingMessage(); |
| 3581 | } |
| 3582 | |
| 3583 | |
| 3584 | void FullCodeGenerator::ExitFinallyBlock() { |
| 3585 | DCHECK(!result_register().is(edx)); |
| 3586 | // Restore pending message from stack. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3587 | PopOperand(edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3588 | ExternalReference pending_message_obj = |
| 3589 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3590 | __ mov(Operand::StaticVariable(pending_message_obj), edx); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3591 | } |
| 3592 | |
| 3593 | |
| 3594 | void FullCodeGenerator::ClearPendingMessage() { |
| 3595 | DCHECK(!result_register().is(edx)); |
| 3596 | ExternalReference pending_message_obj = |
| 3597 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3598 | __ mov(edx, Immediate(isolate()->factory()->the_hole_value())); |
| 3599 | __ mov(Operand::StaticVariable(pending_message_obj), edx); |
| 3600 | } |
| 3601 | |
| 3602 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3603 | void FullCodeGenerator::DeferredCommands::EmitCommands() { |
| 3604 | DCHECK(!result_register().is(edx)); |
| 3605 | __ Pop(result_register()); // Restore the accumulator. |
| 3606 | __ Pop(edx); // Get the token. |
| 3607 | for (DeferredCommand cmd : commands_) { |
| 3608 | Label skip; |
| 3609 | __ cmp(edx, Immediate(Smi::FromInt(cmd.token))); |
| 3610 | __ j(not_equal, &skip); |
| 3611 | switch (cmd.command) { |
| 3612 | case kReturn: |
| 3613 | codegen_->EmitUnwindAndReturn(); |
| 3614 | break; |
| 3615 | case kThrow: |
| 3616 | __ Push(result_register()); |
| 3617 | __ CallRuntime(Runtime::kReThrow); |
| 3618 | break; |
| 3619 | case kContinue: |
| 3620 | codegen_->EmitContinue(cmd.target); |
| 3621 | break; |
| 3622 | case kBreak: |
| 3623 | codegen_->EmitBreak(cmd.target); |
| 3624 | break; |
| 3625 | } |
| 3626 | __ bind(&skip); |
| 3627 | } |
| 3628 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3629 | |
| 3630 | #undef __ |
| 3631 | |
| 3632 | |
| 3633 | static const byte kJnsInstruction = 0x79; |
| 3634 | static const byte kJnsOffset = 0x11; |
| 3635 | static const byte kNopByteOne = 0x66; |
| 3636 | static const byte kNopByteTwo = 0x90; |
| 3637 | #ifdef DEBUG |
| 3638 | static const byte kCallInstruction = 0xe8; |
| 3639 | #endif |
| 3640 | |
| 3641 | |
| 3642 | void BackEdgeTable::PatchAt(Code* unoptimized_code, |
| 3643 | Address pc, |
| 3644 | BackEdgeState target_state, |
| 3645 | Code* replacement_code) { |
| 3646 | Address call_target_address = pc - kIntSize; |
| 3647 | Address jns_instr_address = call_target_address - 3; |
| 3648 | Address jns_offset_address = call_target_address - 2; |
| 3649 | |
| 3650 | switch (target_state) { |
| 3651 | case INTERRUPT: |
| 3652 | // sub <profiling_counter>, <delta> ;; Not changed |
| 3653 | // jns ok |
| 3654 | // call <interrupt stub> |
| 3655 | // ok: |
| 3656 | *jns_instr_address = kJnsInstruction; |
| 3657 | *jns_offset_address = kJnsOffset; |
| 3658 | break; |
| 3659 | case ON_STACK_REPLACEMENT: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3660 | // sub <profiling_counter>, <delta> ;; Not changed |
| 3661 | // nop |
| 3662 | // nop |
| 3663 | // call <on-stack replacment> |
| 3664 | // ok: |
| 3665 | *jns_instr_address = kNopByteOne; |
| 3666 | *jns_offset_address = kNopByteTwo; |
| 3667 | break; |
| 3668 | } |
| 3669 | |
| 3670 | Assembler::set_target_address_at(unoptimized_code->GetIsolate(), |
| 3671 | call_target_address, unoptimized_code, |
| 3672 | replacement_code->entry()); |
| 3673 | unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 3674 | unoptimized_code, call_target_address, replacement_code); |
| 3675 | } |
| 3676 | |
| 3677 | |
| 3678 | BackEdgeTable::BackEdgeState BackEdgeTable::GetBackEdgeState( |
| 3679 | Isolate* isolate, |
| 3680 | Code* unoptimized_code, |
| 3681 | Address pc) { |
| 3682 | Address call_target_address = pc - kIntSize; |
| 3683 | Address jns_instr_address = call_target_address - 3; |
| 3684 | DCHECK_EQ(kCallInstruction, *(call_target_address - 1)); |
| 3685 | |
| 3686 | if (*jns_instr_address == kJnsInstruction) { |
| 3687 | DCHECK_EQ(kJnsOffset, *(call_target_address - 2)); |
| 3688 | DCHECK_EQ(isolate->builtins()->InterruptCheck()->entry(), |
| 3689 | Assembler::target_address_at(call_target_address, |
| 3690 | unoptimized_code)); |
| 3691 | return INTERRUPT; |
| 3692 | } |
| 3693 | |
| 3694 | DCHECK_EQ(kNopByteOne, *jns_instr_address); |
| 3695 | DCHECK_EQ(kNopByteTwo, *(call_target_address - 2)); |
| 3696 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3697 | DCHECK_EQ( |
| 3698 | isolate->builtins()->OnStackReplacement()->entry(), |
| 3699 | Assembler::target_address_at(call_target_address, unoptimized_code)); |
| 3700 | return ON_STACK_REPLACEMENT; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3701 | } |
| 3702 | |
| 3703 | |
| 3704 | } // namespace internal |
| 3705 | } // namespace v8 |
| 3706 | |
| 3707 | #endif // V8_TARGET_ARCH_IA32 |