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_ARM |
| 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/ic/ic.h" |
| 14 | #include "src/parsing/parser.h" |
| 15 | |
| 16 | #include "src/arm/code-stubs-arm.h" |
| 17 | #include "src/arm/macro-assembler-arm.h" |
| 18 | |
| 19 | namespace v8 { |
| 20 | namespace internal { |
| 21 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 22 | #define __ ACCESS_MASM(masm()) |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 23 | |
| 24 | // A patch site is a location in the code which it is possible to patch. This |
| 25 | // class has a number of methods to emit the code which is patchable and the |
| 26 | // method EmitPatchInfo to record a marker back to the patchable code. This |
| 27 | // marker is a cmp rx, #yyy instruction, and x * 0x00000fff + yyy (raw 12 bit |
| 28 | // immediate value is used) is the delta from the pc to the first instruction of |
| 29 | // the patchable code. |
| 30 | class JumpPatchSite BASE_EMBEDDED { |
| 31 | public: |
| 32 | explicit JumpPatchSite(MacroAssembler* masm) : masm_(masm) { |
| 33 | #ifdef DEBUG |
| 34 | info_emitted_ = false; |
| 35 | #endif |
| 36 | } |
| 37 | |
| 38 | ~JumpPatchSite() { |
| 39 | DCHECK(patch_site_.is_bound() == info_emitted_); |
| 40 | } |
| 41 | |
| 42 | // When initially emitting this ensure that a jump is always generated to skip |
| 43 | // the inlined smi code. |
| 44 | void EmitJumpIfNotSmi(Register reg, Label* target) { |
| 45 | DCHECK(!patch_site_.is_bound() && !info_emitted_); |
| 46 | Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 47 | __ bind(&patch_site_); |
| 48 | __ cmp(reg, Operand(reg)); |
| 49 | __ b(eq, target); // Always taken before patched. |
| 50 | } |
| 51 | |
| 52 | // When initially emitting this ensure that a jump is never generated to skip |
| 53 | // the inlined smi code. |
| 54 | void EmitJumpIfSmi(Register reg, Label* target) { |
| 55 | DCHECK(!patch_site_.is_bound() && !info_emitted_); |
| 56 | Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 57 | __ bind(&patch_site_); |
| 58 | __ cmp(reg, Operand(reg)); |
| 59 | __ b(ne, target); // Never taken before patched. |
| 60 | } |
| 61 | |
| 62 | void EmitPatchInfo() { |
| 63 | // Block literal pool emission whilst recording patch site information. |
| 64 | Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 65 | if (patch_site_.is_bound()) { |
| 66 | int delta_to_patch_site = masm_->InstructionsGeneratedSince(&patch_site_); |
| 67 | Register reg; |
| 68 | reg.set_code(delta_to_patch_site / kOff12Mask); |
| 69 | __ cmp_raw_immediate(reg, delta_to_patch_site % kOff12Mask); |
| 70 | #ifdef DEBUG |
| 71 | info_emitted_ = true; |
| 72 | #endif |
| 73 | } else { |
| 74 | __ nop(); // Signals no inlined code. |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | private: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 79 | MacroAssembler* masm() { return masm_; } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 80 | MacroAssembler* masm_; |
| 81 | Label patch_site_; |
| 82 | #ifdef DEBUG |
| 83 | bool info_emitted_; |
| 84 | #endif |
| 85 | }; |
| 86 | |
| 87 | |
| 88 | // Generate code for a JS function. On entry to the function the receiver |
| 89 | // and arguments have been pushed on the stack left to right. The actual |
| 90 | // argument count matches the formal parameter count expected by the |
| 91 | // function. |
| 92 | // |
| 93 | // The live registers are: |
| 94 | // o r1: the JS function object being called (i.e., ourselves) |
| 95 | // o r3: the new target value |
| 96 | // o cp: our context |
| 97 | // o pp: our caller's constant pool pointer (if enabled) |
| 98 | // o fp: our caller's frame pointer |
| 99 | // o sp: stack pointer |
| 100 | // o lr: return address |
| 101 | // |
| 102 | // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 103 | // frames-arm.h for its layout. |
| 104 | void FullCodeGenerator::Generate() { |
| 105 | CompilationInfo* info = info_; |
| 106 | profiling_counter_ = isolate()->factory()->NewCell( |
| 107 | Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| 108 | SetFunctionPosition(literal()); |
| 109 | Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 110 | |
| 111 | ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 112 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 113 | if (FLAG_debug_code && info->ExpectsJSReceiverAsReceiver()) { |
| 114 | int receiver_offset = info->scope()->num_parameters() * kPointerSize; |
| 115 | __ ldr(r2, MemOperand(sp, receiver_offset)); |
| 116 | __ AssertNotSmi(r2); |
| 117 | __ CompareObjectType(r2, r2, no_reg, FIRST_JS_RECEIVER_TYPE); |
| 118 | __ Assert(ge, kSloppyFunctionExpectsJSReceiverReceiver); |
| 119 | } |
| 120 | |
| 121 | // Open a frame scope to indicate that there is a frame on the stack. The |
| 122 | // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 123 | // the frame (that is done below). |
| 124 | FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 125 | |
| 126 | info->set_prologue_offset(masm_->pc_offset()); |
| 127 | __ Prologue(info->GeneratePreagedPrologue()); |
| 128 | |
| 129 | { Comment cmnt(masm_, "[ Allocate locals"); |
| 130 | int locals_count = info->scope()->num_stack_slots(); |
| 131 | // Generators allocate locals, if any, in context slots. |
| 132 | DCHECK(!IsGeneratorFunction(info->literal()->kind()) || locals_count == 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 133 | OperandStackDepthIncrement(locals_count); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 134 | if (locals_count > 0) { |
| 135 | if (locals_count >= 128) { |
| 136 | Label ok; |
| 137 | __ sub(r9, sp, Operand(locals_count * kPointerSize)); |
| 138 | __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); |
| 139 | __ cmp(r9, Operand(r2)); |
| 140 | __ b(hs, &ok); |
| 141 | __ CallRuntime(Runtime::kThrowStackOverflow); |
| 142 | __ bind(&ok); |
| 143 | } |
| 144 | __ LoadRoot(r9, Heap::kUndefinedValueRootIndex); |
| 145 | int kMaxPushes = FLAG_optimize_for_size ? 4 : 32; |
| 146 | if (locals_count >= kMaxPushes) { |
| 147 | int loop_iterations = locals_count / kMaxPushes; |
| 148 | __ mov(r2, Operand(loop_iterations)); |
| 149 | Label loop_header; |
| 150 | __ bind(&loop_header); |
| 151 | // Do pushes. |
| 152 | for (int i = 0; i < kMaxPushes; i++) { |
| 153 | __ push(r9); |
| 154 | } |
| 155 | // Continue loop if not done. |
| 156 | __ sub(r2, r2, Operand(1), SetCC); |
| 157 | __ b(&loop_header, ne); |
| 158 | } |
| 159 | int remaining = locals_count % kMaxPushes; |
| 160 | // Emit the remaining pushes. |
| 161 | for (int i = 0; i < remaining; i++) { |
| 162 | __ push(r9); |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | bool function_in_register_r1 = true; |
| 168 | |
| 169 | // Possibly allocate a local context. |
| 170 | if (info->scope()->num_heap_slots() > 0) { |
| 171 | // Argument to NewContext is the function, which is still in r1. |
| 172 | Comment cmnt(masm_, "[ Allocate context"); |
| 173 | bool need_write_barrier = true; |
| 174 | int slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 175 | if (info->scope()->is_script_scope()) { |
| 176 | __ push(r1); |
| 177 | __ Push(info->scope()->GetScopeInfo(info->isolate())); |
| 178 | __ CallRuntime(Runtime::kNewScriptContext); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 179 | PrepareForBailoutForId(BailoutId::ScriptContext(), |
| 180 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 181 | // The new target value is not used, clobbering is safe. |
| 182 | DCHECK_NULL(info->scope()->new_target_var()); |
| 183 | } else { |
| 184 | if (info->scope()->new_target_var() != nullptr) { |
| 185 | __ push(r3); // Preserve new target. |
| 186 | } |
| 187 | if (slots <= FastNewContextStub::kMaximumSlots) { |
| 188 | FastNewContextStub stub(isolate(), slots); |
| 189 | __ CallStub(&stub); |
| 190 | // Result of FastNewContextStub is always in new space. |
| 191 | need_write_barrier = false; |
| 192 | } else { |
| 193 | __ push(r1); |
| 194 | __ CallRuntime(Runtime::kNewFunctionContext); |
| 195 | } |
| 196 | if (info->scope()->new_target_var() != nullptr) { |
| 197 | __ pop(r3); // Preserve new target. |
| 198 | } |
| 199 | } |
| 200 | function_in_register_r1 = false; |
| 201 | // Context is returned in r0. It replaces the context passed to us. |
| 202 | // It's saved in the stack and kept live in cp. |
| 203 | __ mov(cp, r0); |
| 204 | __ str(r0, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 205 | // Copy any necessary parameters into the context. |
| 206 | int num_parameters = info->scope()->num_parameters(); |
| 207 | int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; |
| 208 | for (int i = first_parameter; i < num_parameters; i++) { |
| 209 | Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i); |
| 210 | if (var->IsContextSlot()) { |
| 211 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 212 | (num_parameters - 1 - i) * kPointerSize; |
| 213 | // Load parameter from stack. |
| 214 | __ ldr(r0, MemOperand(fp, parameter_offset)); |
| 215 | // Store it in the context. |
| 216 | MemOperand target = ContextMemOperand(cp, var->index()); |
| 217 | __ str(r0, target); |
| 218 | |
| 219 | // Update the write barrier. |
| 220 | if (need_write_barrier) { |
| 221 | __ RecordWriteContextSlot(cp, target.offset(), r0, r2, |
| 222 | kLRHasBeenSaved, kDontSaveFPRegs); |
| 223 | } else if (FLAG_debug_code) { |
| 224 | Label done; |
| 225 | __ JumpIfInNewSpace(cp, r0, &done); |
| 226 | __ Abort(kExpectedNewSpaceObject); |
| 227 | __ bind(&done); |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | // Register holding this function and new target are both trashed in case we |
| 234 | // bailout here. But since that can happen only when new target is not used |
| 235 | // 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] | 236 | PrepareForBailoutForId(BailoutId::FunctionContext(), |
| 237 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 238 | |
| 239 | // Possibly set up a local binding to the this function which is used in |
| 240 | // derived constructors with super calls. |
| 241 | Variable* this_function_var = scope()->this_function_var(); |
| 242 | if (this_function_var != nullptr) { |
| 243 | Comment cmnt(masm_, "[ This function"); |
| 244 | if (!function_in_register_r1) { |
| 245 | __ ldr(r1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 246 | // The write barrier clobbers register again, keep it marked as such. |
| 247 | } |
| 248 | SetVar(this_function_var, r1, r0, r2); |
| 249 | } |
| 250 | |
| 251 | // Possibly set up a local binding to the new target value. |
| 252 | Variable* new_target_var = scope()->new_target_var(); |
| 253 | if (new_target_var != nullptr) { |
| 254 | Comment cmnt(masm_, "[ new.target"); |
| 255 | SetVar(new_target_var, r3, r0, r2); |
| 256 | } |
| 257 | |
| 258 | // Possibly allocate RestParameters |
| 259 | int rest_index; |
| 260 | Variable* rest_param = scope()->rest_parameter(&rest_index); |
| 261 | if (rest_param) { |
| 262 | Comment cmnt(masm_, "[ Allocate rest parameter array"); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 263 | if (!function_in_register_r1) { |
| 264 | __ ldr(r1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 265 | } |
| 266 | FastNewRestParameterStub stub(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 267 | __ CallStub(&stub); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 268 | function_in_register_r1 = false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 269 | SetVar(rest_param, r0, r1, r2); |
| 270 | } |
| 271 | |
| 272 | Variable* arguments = scope()->arguments(); |
| 273 | if (arguments != NULL) { |
| 274 | // Function uses arguments object. |
| 275 | Comment cmnt(masm_, "[ Allocate arguments object"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 276 | if (!function_in_register_r1) { |
| 277 | // Load this again, if it's used by the local context below. |
| 278 | __ ldr(r1, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 279 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 280 | if (is_strict(language_mode()) || !has_simple_parameters()) { |
| 281 | FastNewStrictArgumentsStub stub(isolate()); |
| 282 | __ CallStub(&stub); |
| 283 | } else if (literal()->has_duplicate_parameters()) { |
| 284 | __ Push(r1); |
| 285 | __ CallRuntime(Runtime::kNewSloppyArguments_Generic); |
| 286 | } else { |
| 287 | FastNewSloppyArgumentsStub stub(isolate()); |
| 288 | __ CallStub(&stub); |
| 289 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 290 | |
| 291 | SetVar(arguments, r0, r1, r2); |
| 292 | } |
| 293 | |
| 294 | if (FLAG_trace) { |
| 295 | __ CallRuntime(Runtime::kTraceEnter); |
| 296 | } |
| 297 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 298 | // Visit the declarations and body. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 299 | PrepareForBailoutForId(BailoutId::FunctionEntry(), |
| 300 | BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 301 | { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 302 | Comment cmnt(masm_, "[ Declarations"); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 303 | VisitDeclarations(scope()->declarations()); |
| 304 | } |
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 | // Assert that the declarations do not use ICs. Otherwise the debugger |
| 307 | // won't be able to redirect a PC at an IC to the correct IC in newly |
| 308 | // recompiled code. |
| 309 | DCHECK_EQ(0, ic_total_count_); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 310 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 311 | { |
| 312 | Comment cmnt(masm_, "[ Stack check"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 313 | PrepareForBailoutForId(BailoutId::Declarations(), |
| 314 | BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 315 | Label ok; |
| 316 | __ LoadRoot(ip, Heap::kStackLimitRootIndex); |
| 317 | __ cmp(sp, Operand(ip)); |
| 318 | __ b(hs, &ok); |
| 319 | Handle<Code> stack_check = isolate()->builtins()->StackCheck(); |
| 320 | PredictableCodeSizeScope predictable(masm_); |
| 321 | predictable.ExpectSize( |
| 322 | masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); |
| 323 | __ Call(stack_check, RelocInfo::CODE_TARGET); |
| 324 | __ bind(&ok); |
| 325 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 326 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 327 | { |
| 328 | Comment cmnt(masm_, "[ Body"); |
| 329 | DCHECK(loop_depth() == 0); |
| 330 | VisitStatements(literal()->body()); |
| 331 | DCHECK(loop_depth() == 0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | // Always emit a 'return undefined' in case control fell off the end of |
| 335 | // the body. |
| 336 | { Comment cmnt(masm_, "[ return <undefined>;"); |
| 337 | __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
| 338 | } |
| 339 | EmitReturnSequence(); |
| 340 | |
| 341 | // Force emit the constant pool, so it doesn't get emitted in the middle |
| 342 | // of the back edge table. |
| 343 | masm()->CheckConstPool(true, false); |
| 344 | } |
| 345 | |
| 346 | |
| 347 | void FullCodeGenerator::ClearAccumulator() { |
| 348 | __ mov(r0, Operand(Smi::FromInt(0))); |
| 349 | } |
| 350 | |
| 351 | |
| 352 | void FullCodeGenerator::EmitProfilingCounterDecrement(int delta) { |
| 353 | __ mov(r2, Operand(profiling_counter_)); |
| 354 | __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset)); |
| 355 | __ sub(r3, r3, Operand(Smi::FromInt(delta)), SetCC); |
| 356 | __ str(r3, FieldMemOperand(r2, Cell::kValueOffset)); |
| 357 | } |
| 358 | |
| 359 | |
| 360 | #ifdef CAN_USE_ARMV7_INSTRUCTIONS |
| 361 | static const int kProfileCounterResetSequenceLength = 5 * Assembler::kInstrSize; |
| 362 | #else |
| 363 | static const int kProfileCounterResetSequenceLength = 7 * Assembler::kInstrSize; |
| 364 | #endif |
| 365 | |
| 366 | |
| 367 | void FullCodeGenerator::EmitProfilingCounterReset() { |
| 368 | Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 369 | PredictableCodeSizeScope predictable_code_size_scope( |
| 370 | masm_, kProfileCounterResetSequenceLength); |
| 371 | Label start; |
| 372 | __ bind(&start); |
| 373 | int reset_value = FLAG_interrupt_budget; |
| 374 | __ mov(r2, Operand(profiling_counter_)); |
| 375 | // The mov instruction above can be either 1 to 3 (for ARMv7) or 1 to 5 |
| 376 | // instructions (for ARMv6) depending upon whether it is an extended constant |
| 377 | // pool - insert nop to compensate. |
| 378 | int expected_instr_count = |
| 379 | (kProfileCounterResetSequenceLength / Assembler::kInstrSize) - 2; |
| 380 | DCHECK(masm_->InstructionsGeneratedSince(&start) <= expected_instr_count); |
| 381 | while (masm_->InstructionsGeneratedSince(&start) != expected_instr_count) { |
| 382 | __ nop(); |
| 383 | } |
| 384 | __ mov(r3, Operand(Smi::FromInt(reset_value))); |
| 385 | __ str(r3, FieldMemOperand(r2, Cell::kValueOffset)); |
| 386 | } |
| 387 | |
| 388 | |
| 389 | void FullCodeGenerator::EmitBackEdgeBookkeeping(IterationStatement* stmt, |
| 390 | Label* back_edge_target) { |
| 391 | Comment cmnt(masm_, "[ Back edge bookkeeping"); |
| 392 | // Block literal pools whilst emitting back edge code. |
| 393 | Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 394 | Label ok; |
| 395 | |
| 396 | DCHECK(back_edge_target->is_bound()); |
| 397 | int distance = masm_->SizeOfCodeGeneratedSince(back_edge_target); |
| 398 | int weight = Min(kMaxBackEdgeWeight, |
| 399 | Max(1, distance / kCodeSizeMultiplier)); |
| 400 | EmitProfilingCounterDecrement(weight); |
| 401 | __ b(pl, &ok); |
| 402 | __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
| 403 | |
| 404 | // Record a mapping of this PC offset to the OSR id. This is used to find |
| 405 | // the AST id from the unoptimized code in order to use it as a key into |
| 406 | // the deoptimization input data found in the optimized code. |
| 407 | RecordBackEdge(stmt->OsrEntryId()); |
| 408 | |
| 409 | EmitProfilingCounterReset(); |
| 410 | |
| 411 | __ bind(&ok); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 412 | PrepareForBailoutForId(stmt->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 413 | // Record a mapping of the OSR id to this PC. This is used if the OSR |
| 414 | // entry becomes the target of a bailout. We don't expect it to be, but |
| 415 | // we want it to work if it is. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 416 | PrepareForBailoutForId(stmt->OsrEntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 417 | } |
| 418 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 419 | void FullCodeGenerator::EmitProfilingCounterHandlingForReturnSequence( |
| 420 | bool is_tail_call) { |
| 421 | // Pretend that the exit is a backwards jump to the entry. |
| 422 | int weight = 1; |
| 423 | if (info_->ShouldSelfOptimize()) { |
| 424 | weight = FLAG_interrupt_budget / FLAG_self_opt_count; |
| 425 | } else { |
| 426 | int distance = masm_->pc_offset(); |
| 427 | weight = Min(kMaxBackEdgeWeight, Max(1, distance / kCodeSizeMultiplier)); |
| 428 | } |
| 429 | EmitProfilingCounterDecrement(weight); |
| 430 | Label ok; |
| 431 | __ b(pl, &ok); |
| 432 | // Don't need to save result register if we are going to do a tail call. |
| 433 | if (!is_tail_call) { |
| 434 | __ push(r0); |
| 435 | } |
| 436 | __ Call(isolate()->builtins()->InterruptCheck(), RelocInfo::CODE_TARGET); |
| 437 | if (!is_tail_call) { |
| 438 | __ pop(r0); |
| 439 | } |
| 440 | EmitProfilingCounterReset(); |
| 441 | __ bind(&ok); |
| 442 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 443 | |
| 444 | void FullCodeGenerator::EmitReturnSequence() { |
| 445 | Comment cmnt(masm_, "[ Return sequence"); |
| 446 | if (return_label_.is_bound()) { |
| 447 | __ b(&return_label_); |
| 448 | } else { |
| 449 | __ bind(&return_label_); |
| 450 | if (FLAG_trace) { |
| 451 | // Push the return value on the stack as the parameter. |
| 452 | // Runtime::TraceExit returns its parameter in r0. |
| 453 | __ push(r0); |
| 454 | __ CallRuntime(Runtime::kTraceExit); |
| 455 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 456 | EmitProfilingCounterHandlingForReturnSequence(false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 457 | |
| 458 | // Make sure that the constant pool is not emitted inside of the return |
| 459 | // sequence. |
| 460 | { Assembler::BlockConstPoolScope block_const_pool(masm_); |
| 461 | int32_t arg_count = info_->scope()->num_parameters() + 1; |
| 462 | int32_t sp_delta = arg_count * kPointerSize; |
| 463 | SetReturnPosition(literal()); |
| 464 | // TODO(svenpanne) The code below is sometimes 4 words, sometimes 5! |
| 465 | PredictableCodeSizeScope predictable(masm_, -1); |
| 466 | __ LeaveFrame(StackFrame::JAVA_SCRIPT); |
| 467 | { ConstantPoolUnavailableScope constant_pool_unavailable(masm_); |
| 468 | __ add(sp, sp, Operand(sp_delta)); |
| 469 | __ Jump(lr); |
| 470 | } |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 475 | void FullCodeGenerator::RestoreContext() { |
| 476 | __ ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 477 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 478 | |
| 479 | void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { |
| 480 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 481 | codegen()->GetVar(result_register(), var); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 482 | codegen()->PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | |
| 486 | void FullCodeGenerator::EffectContext::Plug(Heap::RootListIndex index) const { |
| 487 | } |
| 488 | |
| 489 | |
| 490 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 491 | Heap::RootListIndex index) const { |
| 492 | __ LoadRoot(result_register(), index); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | void FullCodeGenerator::StackValueContext::Plug( |
| 497 | Heap::RootListIndex index) const { |
| 498 | __ LoadRoot(result_register(), index); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 499 | codegen()->PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | |
| 503 | void FullCodeGenerator::TestContext::Plug(Heap::RootListIndex index) const { |
| 504 | codegen()->PrepareForBailoutBeforeSplit(condition(), |
| 505 | true, |
| 506 | true_label_, |
| 507 | false_label_); |
| 508 | if (index == Heap::kUndefinedValueRootIndex || |
| 509 | index == Heap::kNullValueRootIndex || |
| 510 | index == Heap::kFalseValueRootIndex) { |
| 511 | if (false_label_ != fall_through_) __ b(false_label_); |
| 512 | } else if (index == Heap::kTrueValueRootIndex) { |
| 513 | if (true_label_ != fall_through_) __ b(true_label_); |
| 514 | } else { |
| 515 | __ LoadRoot(result_register(), index); |
| 516 | codegen()->DoTest(this); |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | |
| 521 | void FullCodeGenerator::EffectContext::Plug(Handle<Object> lit) const { |
| 522 | } |
| 523 | |
| 524 | |
| 525 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 526 | Handle<Object> lit) const { |
| 527 | __ mov(result_register(), Operand(lit)); |
| 528 | } |
| 529 | |
| 530 | |
| 531 | void FullCodeGenerator::StackValueContext::Plug(Handle<Object> lit) const { |
| 532 | // Immediates cannot be pushed directly. |
| 533 | __ mov(result_register(), Operand(lit)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 534 | codegen()->PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | |
| 538 | void FullCodeGenerator::TestContext::Plug(Handle<Object> lit) const { |
| 539 | codegen()->PrepareForBailoutBeforeSplit(condition(), |
| 540 | true, |
| 541 | true_label_, |
| 542 | false_label_); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 543 | DCHECK(lit->IsNull(isolate()) || lit->IsUndefined(isolate()) || |
| 544 | !lit->IsUndetectable()); |
| 545 | if (lit->IsUndefined(isolate()) || lit->IsNull(isolate()) || |
| 546 | lit->IsFalse(isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 547 | if (false_label_ != fall_through_) __ b(false_label_); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 548 | } else if (lit->IsTrue(isolate()) || lit->IsJSObject()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 549 | if (true_label_ != fall_through_) __ b(true_label_); |
| 550 | } else if (lit->IsString()) { |
| 551 | if (String::cast(*lit)->length() == 0) { |
| 552 | if (false_label_ != fall_through_) __ b(false_label_); |
| 553 | } else { |
| 554 | if (true_label_ != fall_through_) __ b(true_label_); |
| 555 | } |
| 556 | } else if (lit->IsSmi()) { |
| 557 | if (Smi::cast(*lit)->value() == 0) { |
| 558 | if (false_label_ != fall_through_) __ b(false_label_); |
| 559 | } else { |
| 560 | if (true_label_ != fall_through_) __ b(true_label_); |
| 561 | } |
| 562 | } else { |
| 563 | // For simplicity we always test the accumulator register. |
| 564 | __ mov(result_register(), Operand(lit)); |
| 565 | codegen()->DoTest(this); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 570 | void FullCodeGenerator::StackValueContext::DropAndPlug(int count, |
| 571 | Register reg) const { |
| 572 | DCHECK(count > 0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 573 | if (count > 1) codegen()->DropOperands(count - 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 574 | __ str(reg, MemOperand(sp, 0)); |
| 575 | } |
| 576 | |
| 577 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 578 | void FullCodeGenerator::EffectContext::Plug(Label* materialize_true, |
| 579 | Label* materialize_false) const { |
| 580 | DCHECK(materialize_true == materialize_false); |
| 581 | __ bind(materialize_true); |
| 582 | } |
| 583 | |
| 584 | |
| 585 | void FullCodeGenerator::AccumulatorValueContext::Plug( |
| 586 | Label* materialize_true, |
| 587 | Label* materialize_false) const { |
| 588 | Label done; |
| 589 | __ bind(materialize_true); |
| 590 | __ LoadRoot(result_register(), Heap::kTrueValueRootIndex); |
| 591 | __ jmp(&done); |
| 592 | __ bind(materialize_false); |
| 593 | __ LoadRoot(result_register(), Heap::kFalseValueRootIndex); |
| 594 | __ bind(&done); |
| 595 | } |
| 596 | |
| 597 | |
| 598 | void FullCodeGenerator::StackValueContext::Plug( |
| 599 | Label* materialize_true, |
| 600 | Label* materialize_false) const { |
| 601 | Label done; |
| 602 | __ bind(materialize_true); |
| 603 | __ LoadRoot(ip, Heap::kTrueValueRootIndex); |
| 604 | __ jmp(&done); |
| 605 | __ bind(materialize_false); |
| 606 | __ LoadRoot(ip, Heap::kFalseValueRootIndex); |
| 607 | __ bind(&done); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 608 | codegen()->PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | |
| 612 | void FullCodeGenerator::TestContext::Plug(Label* materialize_true, |
| 613 | Label* materialize_false) const { |
| 614 | DCHECK(materialize_true == true_label_); |
| 615 | DCHECK(materialize_false == false_label_); |
| 616 | } |
| 617 | |
| 618 | |
| 619 | void FullCodeGenerator::AccumulatorValueContext::Plug(bool flag) const { |
| 620 | Heap::RootListIndex value_root_index = |
| 621 | flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex; |
| 622 | __ LoadRoot(result_register(), value_root_index); |
| 623 | } |
| 624 | |
| 625 | |
| 626 | void FullCodeGenerator::StackValueContext::Plug(bool flag) const { |
| 627 | Heap::RootListIndex value_root_index = |
| 628 | flag ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex; |
| 629 | __ LoadRoot(ip, value_root_index); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 630 | codegen()->PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | |
| 634 | void FullCodeGenerator::TestContext::Plug(bool flag) const { |
| 635 | codegen()->PrepareForBailoutBeforeSplit(condition(), |
| 636 | true, |
| 637 | true_label_, |
| 638 | false_label_); |
| 639 | if (flag) { |
| 640 | if (true_label_ != fall_through_) __ b(true_label_); |
| 641 | } else { |
| 642 | if (false_label_ != fall_through_) __ b(false_label_); |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | |
| 647 | void FullCodeGenerator::DoTest(Expression* condition, |
| 648 | Label* if_true, |
| 649 | Label* if_false, |
| 650 | Label* fall_through) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 651 | Handle<Code> ic = ToBooleanICStub::GetUninitialized(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 652 | CallIC(ic, condition->test_id()); |
| 653 | __ CompareRoot(result_register(), Heap::kTrueValueRootIndex); |
| 654 | Split(eq, if_true, if_false, fall_through); |
| 655 | } |
| 656 | |
| 657 | |
| 658 | void FullCodeGenerator::Split(Condition cond, |
| 659 | Label* if_true, |
| 660 | Label* if_false, |
| 661 | Label* fall_through) { |
| 662 | if (if_false == fall_through) { |
| 663 | __ b(cond, if_true); |
| 664 | } else if (if_true == fall_through) { |
| 665 | __ b(NegateCondition(cond), if_false); |
| 666 | } else { |
| 667 | __ b(cond, if_true); |
| 668 | __ b(if_false); |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | |
| 673 | MemOperand FullCodeGenerator::StackOperand(Variable* var) { |
| 674 | DCHECK(var->IsStackAllocated()); |
| 675 | // Offset is negative because higher indexes are at lower addresses. |
| 676 | int offset = -var->index() * kPointerSize; |
| 677 | // Adjust by a (parameter or local) base offset. |
| 678 | if (var->IsParameter()) { |
| 679 | offset += (info_->scope()->num_parameters() + 1) * kPointerSize; |
| 680 | } else { |
| 681 | offset += JavaScriptFrameConstants::kLocal0Offset; |
| 682 | } |
| 683 | return MemOperand(fp, offset); |
| 684 | } |
| 685 | |
| 686 | |
| 687 | MemOperand FullCodeGenerator::VarOperand(Variable* var, Register scratch) { |
| 688 | DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
| 689 | if (var->IsContextSlot()) { |
| 690 | int context_chain_length = scope()->ContextChainLength(var->scope()); |
| 691 | __ LoadContext(scratch, context_chain_length); |
| 692 | return ContextMemOperand(scratch, var->index()); |
| 693 | } else { |
| 694 | return StackOperand(var); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | |
| 699 | void FullCodeGenerator::GetVar(Register dest, Variable* var) { |
| 700 | // Use destination as scratch. |
| 701 | MemOperand location = VarOperand(var, dest); |
| 702 | __ ldr(dest, location); |
| 703 | } |
| 704 | |
| 705 | |
| 706 | void FullCodeGenerator::SetVar(Variable* var, |
| 707 | Register src, |
| 708 | Register scratch0, |
| 709 | Register scratch1) { |
| 710 | DCHECK(var->IsContextSlot() || var->IsStackAllocated()); |
| 711 | DCHECK(!scratch0.is(src)); |
| 712 | DCHECK(!scratch0.is(scratch1)); |
| 713 | DCHECK(!scratch1.is(src)); |
| 714 | MemOperand location = VarOperand(var, scratch0); |
| 715 | __ str(src, location); |
| 716 | |
| 717 | // Emit the write barrier code if the location is in the heap. |
| 718 | if (var->IsContextSlot()) { |
| 719 | __ RecordWriteContextSlot(scratch0, |
| 720 | location.offset(), |
| 721 | src, |
| 722 | scratch1, |
| 723 | kLRHasBeenSaved, |
| 724 | kDontSaveFPRegs); |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | |
| 729 | void FullCodeGenerator::PrepareForBailoutBeforeSplit(Expression* expr, |
| 730 | bool should_normalize, |
| 731 | Label* if_true, |
| 732 | Label* if_false) { |
| 733 | // Only prepare for bailouts before splits if we're in a test |
| 734 | // context. Otherwise, we let the Visit function deal with the |
| 735 | // preparation to avoid preparing with the same AST id twice. |
| 736 | if (!context()->IsTest()) return; |
| 737 | |
| 738 | Label skip; |
| 739 | if (should_normalize) __ b(&skip); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 740 | PrepareForBailout(expr, BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 741 | if (should_normalize) { |
| 742 | __ LoadRoot(ip, Heap::kTrueValueRootIndex); |
| 743 | __ cmp(r0, ip); |
| 744 | Split(eq, if_true, if_false, NULL); |
| 745 | __ bind(&skip); |
| 746 | } |
| 747 | } |
| 748 | |
| 749 | |
| 750 | void FullCodeGenerator::EmitDebugCheckDeclarationContext(Variable* variable) { |
| 751 | // The variable in the declaration always resides in the current function |
| 752 | // context. |
| 753 | DCHECK_EQ(0, scope()->ContextChainLength(variable->scope())); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 754 | if (FLAG_debug_code) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 755 | // Check that we're not inside a with or catch context. |
| 756 | __ ldr(r1, FieldMemOperand(cp, HeapObject::kMapOffset)); |
| 757 | __ CompareRoot(r1, Heap::kWithContextMapRootIndex); |
| 758 | __ Check(ne, kDeclarationInWithContext); |
| 759 | __ CompareRoot(r1, Heap::kCatchContextMapRootIndex); |
| 760 | __ Check(ne, kDeclarationInCatchContext); |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | |
| 765 | void FullCodeGenerator::VisitVariableDeclaration( |
| 766 | VariableDeclaration* declaration) { |
| 767 | // If it was not possible to allocate the variable at compile time, we |
| 768 | // need to "declare" it at runtime to make sure it actually exists in the |
| 769 | // local context. |
| 770 | VariableProxy* proxy = declaration->proxy(); |
| 771 | VariableMode mode = declaration->mode(); |
| 772 | Variable* variable = proxy->var(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 773 | bool hole_init = mode == LET || mode == CONST; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 774 | switch (variable->location()) { |
| 775 | case VariableLocation::GLOBAL: |
| 776 | case VariableLocation::UNALLOCATED: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 777 | DCHECK(!variable->binding_needs_init()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 778 | globals_->Add(variable->name(), zone()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 779 | globals_->Add(isolate()->factory()->undefined_value(), zone()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 780 | break; |
| 781 | |
| 782 | case VariableLocation::PARAMETER: |
| 783 | case VariableLocation::LOCAL: |
| 784 | if (hole_init) { |
| 785 | Comment cmnt(masm_, "[ VariableDeclaration"); |
| 786 | __ LoadRoot(r0, Heap::kTheHoleValueRootIndex); |
| 787 | __ str(r0, StackOperand(variable)); |
| 788 | } |
| 789 | break; |
| 790 | |
| 791 | case VariableLocation::CONTEXT: |
| 792 | if (hole_init) { |
| 793 | Comment cmnt(masm_, "[ VariableDeclaration"); |
| 794 | EmitDebugCheckDeclarationContext(variable); |
| 795 | __ LoadRoot(r0, Heap::kTheHoleValueRootIndex); |
| 796 | __ str(r0, ContextMemOperand(cp, variable->index())); |
| 797 | // No write barrier since the_hole_value is in old space. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 798 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 799 | } |
| 800 | break; |
| 801 | |
| 802 | case VariableLocation::LOOKUP: { |
| 803 | Comment cmnt(masm_, "[ VariableDeclaration"); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 804 | DCHECK_EQ(VAR, mode); |
| 805 | DCHECK(!hole_init); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 806 | __ mov(r2, Operand(variable->name())); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 807 | __ Push(r2); |
| 808 | __ CallRuntime(Runtime::kDeclareEvalVar); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 809 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 810 | break; |
| 811 | } |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | |
| 816 | void FullCodeGenerator::VisitFunctionDeclaration( |
| 817 | FunctionDeclaration* declaration) { |
| 818 | VariableProxy* proxy = declaration->proxy(); |
| 819 | Variable* variable = proxy->var(); |
| 820 | switch (variable->location()) { |
| 821 | case VariableLocation::GLOBAL: |
| 822 | case VariableLocation::UNALLOCATED: { |
| 823 | globals_->Add(variable->name(), zone()); |
| 824 | Handle<SharedFunctionInfo> function = |
| 825 | Compiler::GetSharedFunctionInfo(declaration->fun(), script(), info_); |
| 826 | // Check for stack-overflow exception. |
| 827 | if (function.is_null()) return SetStackOverflow(); |
| 828 | globals_->Add(function, zone()); |
| 829 | break; |
| 830 | } |
| 831 | |
| 832 | case VariableLocation::PARAMETER: |
| 833 | case VariableLocation::LOCAL: { |
| 834 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
| 835 | VisitForAccumulatorValue(declaration->fun()); |
| 836 | __ str(result_register(), StackOperand(variable)); |
| 837 | break; |
| 838 | } |
| 839 | |
| 840 | case VariableLocation::CONTEXT: { |
| 841 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
| 842 | EmitDebugCheckDeclarationContext(variable); |
| 843 | VisitForAccumulatorValue(declaration->fun()); |
| 844 | __ str(result_register(), ContextMemOperand(cp, variable->index())); |
| 845 | int offset = Context::SlotOffset(variable->index()); |
| 846 | // We know that we have written a function, which is not a smi. |
| 847 | __ RecordWriteContextSlot(cp, |
| 848 | offset, |
| 849 | result_register(), |
| 850 | r2, |
| 851 | kLRHasBeenSaved, |
| 852 | kDontSaveFPRegs, |
| 853 | EMIT_REMEMBERED_SET, |
| 854 | OMIT_SMI_CHECK); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 855 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 856 | break; |
| 857 | } |
| 858 | |
| 859 | case VariableLocation::LOOKUP: { |
| 860 | Comment cmnt(masm_, "[ FunctionDeclaration"); |
| 861 | __ mov(r2, Operand(variable->name())); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 862 | PushOperand(r2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 863 | // Push initial value for function declaration. |
| 864 | VisitForStackValue(declaration->fun()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 865 | CallRuntimeWithOperands(Runtime::kDeclareEvalFunction); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 866 | PrepareForBailoutForId(proxy->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 867 | break; |
| 868 | } |
| 869 | } |
| 870 | } |
| 871 | |
| 872 | |
| 873 | void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
| 874 | // Call the runtime to declare the globals. |
| 875 | __ mov(r1, Operand(pairs)); |
| 876 | __ mov(r0, Operand(Smi::FromInt(DeclareGlobalsFlags()))); |
| 877 | __ Push(r1, r0); |
| 878 | __ CallRuntime(Runtime::kDeclareGlobals); |
| 879 | // Return value is ignored. |
| 880 | } |
| 881 | |
| 882 | |
| 883 | void FullCodeGenerator::DeclareModules(Handle<FixedArray> descriptions) { |
| 884 | // Call the runtime to declare the modules. |
| 885 | __ Push(descriptions); |
| 886 | __ CallRuntime(Runtime::kDeclareModules); |
| 887 | // Return value is ignored. |
| 888 | } |
| 889 | |
| 890 | |
| 891 | void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) { |
| 892 | Comment cmnt(masm_, "[ SwitchStatement"); |
| 893 | Breakable nested_statement(this, stmt); |
| 894 | SetStatementPosition(stmt); |
| 895 | |
| 896 | // Keep the switch value on the stack until a case matches. |
| 897 | VisitForStackValue(stmt->tag()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 898 | PrepareForBailoutForId(stmt->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 899 | |
| 900 | ZoneList<CaseClause*>* clauses = stmt->cases(); |
| 901 | CaseClause* default_clause = NULL; // Can occur anywhere in the list. |
| 902 | |
| 903 | Label next_test; // Recycled for each test. |
| 904 | // Compile all the tests with branches to their bodies. |
| 905 | for (int i = 0; i < clauses->length(); i++) { |
| 906 | CaseClause* clause = clauses->at(i); |
| 907 | clause->body_target()->Unuse(); |
| 908 | |
| 909 | // The default is not a test, but remember it as final fall through. |
| 910 | if (clause->is_default()) { |
| 911 | default_clause = clause; |
| 912 | continue; |
| 913 | } |
| 914 | |
| 915 | Comment cmnt(masm_, "[ Case comparison"); |
| 916 | __ bind(&next_test); |
| 917 | next_test.Unuse(); |
| 918 | |
| 919 | // Compile the label expression. |
| 920 | VisitForAccumulatorValue(clause->label()); |
| 921 | |
| 922 | // Perform the comparison as if via '==='. |
| 923 | __ ldr(r1, MemOperand(sp, 0)); // Switch value. |
| 924 | bool inline_smi_code = ShouldInlineSmiCase(Token::EQ_STRICT); |
| 925 | JumpPatchSite patch_site(masm_); |
| 926 | if (inline_smi_code) { |
| 927 | Label slow_case; |
| 928 | __ orr(r2, r1, r0); |
| 929 | patch_site.EmitJumpIfNotSmi(r2, &slow_case); |
| 930 | |
| 931 | __ cmp(r1, r0); |
| 932 | __ b(ne, &next_test); |
| 933 | __ Drop(1); // Switch value is no longer needed. |
| 934 | __ b(clause->body_target()); |
| 935 | __ bind(&slow_case); |
| 936 | } |
| 937 | |
| 938 | // Record position before stub call for type feedback. |
| 939 | SetExpressionPosition(clause); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 940 | Handle<Code> ic = |
| 941 | CodeFactory::CompareIC(isolate(), Token::EQ_STRICT).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 942 | CallIC(ic, clause->CompareId()); |
| 943 | patch_site.EmitPatchInfo(); |
| 944 | |
| 945 | Label skip; |
| 946 | __ b(&skip); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 947 | PrepareForBailout(clause, BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 948 | __ LoadRoot(ip, Heap::kTrueValueRootIndex); |
| 949 | __ cmp(r0, ip); |
| 950 | __ b(ne, &next_test); |
| 951 | __ Drop(1); |
| 952 | __ jmp(clause->body_target()); |
| 953 | __ bind(&skip); |
| 954 | |
| 955 | __ cmp(r0, Operand::Zero()); |
| 956 | __ b(ne, &next_test); |
| 957 | __ Drop(1); // Switch value is no longer needed. |
| 958 | __ b(clause->body_target()); |
| 959 | } |
| 960 | |
| 961 | // Discard the test value and jump to the default if present, otherwise to |
| 962 | // the end of the statement. |
| 963 | __ bind(&next_test); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 964 | DropOperands(1); // Switch value is no longer needed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 965 | if (default_clause == NULL) { |
| 966 | __ b(nested_statement.break_label()); |
| 967 | } else { |
| 968 | __ b(default_clause->body_target()); |
| 969 | } |
| 970 | |
| 971 | // Compile all the case bodies. |
| 972 | for (int i = 0; i < clauses->length(); i++) { |
| 973 | Comment cmnt(masm_, "[ Case body"); |
| 974 | CaseClause* clause = clauses->at(i); |
| 975 | __ bind(clause->body_target()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 976 | PrepareForBailoutForId(clause->EntryId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 977 | VisitStatements(clause->statements()); |
| 978 | } |
| 979 | |
| 980 | __ bind(nested_statement.break_label()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 981 | PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | |
| 985 | void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { |
| 986 | Comment cmnt(masm_, "[ ForInStatement"); |
| 987 | SetStatementPosition(stmt, SKIP_BREAK); |
| 988 | |
| 989 | FeedbackVectorSlot slot = stmt->ForInFeedbackSlot(); |
| 990 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 991 | // Get the object to enumerate over. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 992 | SetExpressionAsStatementPosition(stmt->enumerable()); |
| 993 | VisitForAccumulatorValue(stmt->enumerable()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 994 | OperandStackDepthIncrement(5); |
| 995 | |
| 996 | Label loop, exit; |
| 997 | Iteration loop_statement(this, stmt); |
| 998 | increment_loop_depth(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 999 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1000 | // If the object is null or undefined, skip over the loop, otherwise convert |
| 1001 | // 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] | 1002 | Label convert, done_convert; |
| 1003 | __ JumpIfSmi(r0, &convert); |
| 1004 | __ CompareObjectType(r0, r1, r1, FIRST_JS_RECEIVER_TYPE); |
| 1005 | __ b(ge, &done_convert); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1006 | __ CompareRoot(r0, Heap::kNullValueRootIndex); |
| 1007 | __ b(eq, &exit); |
| 1008 | __ CompareRoot(r0, Heap::kUndefinedValueRootIndex); |
| 1009 | __ b(eq, &exit); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1010 | __ bind(&convert); |
| 1011 | ToObjectStub stub(isolate()); |
| 1012 | __ CallStub(&stub); |
| 1013 | __ bind(&done_convert); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1014 | PrepareForBailoutForId(stmt->ToObjectId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1015 | __ push(r0); |
| 1016 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1017 | // Check cache validity in generated code. If we cannot guarantee cache |
| 1018 | // validity, call the runtime system to check cache validity or get the |
| 1019 | // property names in a fixed array. Note: Proxies never have an enum cache, |
| 1020 | // so will always take the slow path. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1021 | Label call_runtime; |
| 1022 | __ CheckEnumCache(&call_runtime); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1023 | |
| 1024 | // The enum cache is valid. Load the map of the object being |
| 1025 | // iterated over and use the cache for the iteration. |
| 1026 | Label use_cache; |
| 1027 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 1028 | __ b(&use_cache); |
| 1029 | |
| 1030 | // Get the set of properties to enumerate. |
| 1031 | __ bind(&call_runtime); |
| 1032 | __ push(r0); // Duplicate the enumerable object on the stack. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1033 | __ CallRuntime(Runtime::kForInEnumerate); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1034 | PrepareForBailoutForId(stmt->EnumId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1035 | |
| 1036 | // If we got a map from the runtime call, we can do a fast |
| 1037 | // modification check. Otherwise, we got a fixed array, and we have |
| 1038 | // to do a slow check. |
| 1039 | Label fixed_array; |
| 1040 | __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 1041 | __ LoadRoot(ip, Heap::kMetaMapRootIndex); |
| 1042 | __ cmp(r2, ip); |
| 1043 | __ b(ne, &fixed_array); |
| 1044 | |
| 1045 | // We got a map in register r0. Get the enumeration cache from it. |
| 1046 | Label no_descriptors; |
| 1047 | __ bind(&use_cache); |
| 1048 | |
| 1049 | __ EnumLength(r1, r0); |
| 1050 | __ cmp(r1, Operand(Smi::FromInt(0))); |
| 1051 | __ b(eq, &no_descriptors); |
| 1052 | |
| 1053 | __ LoadInstanceDescriptors(r0, r2); |
| 1054 | __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheOffset)); |
| 1055 | __ ldr(r2, FieldMemOperand(r2, DescriptorArray::kEnumCacheBridgeCacheOffset)); |
| 1056 | |
| 1057 | // Set up the four remaining stack slots. |
| 1058 | __ push(r0); // Map. |
| 1059 | __ mov(r0, Operand(Smi::FromInt(0))); |
| 1060 | // Push enumeration cache, enumeration cache length (as smi) and zero. |
| 1061 | __ Push(r2, r1, r0); |
| 1062 | __ jmp(&loop); |
| 1063 | |
| 1064 | __ bind(&no_descriptors); |
| 1065 | __ Drop(1); |
| 1066 | __ jmp(&exit); |
| 1067 | |
| 1068 | // We got a fixed array in register r0. Iterate through that. |
| 1069 | __ bind(&fixed_array); |
| 1070 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1071 | __ mov(r1, Operand(Smi::FromInt(1))); // Smi(1) indicates slow check |
| 1072 | __ Push(r1, r0); // Smi and array |
| 1073 | __ ldr(r1, FieldMemOperand(r0, FixedArray::kLengthOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1074 | __ Push(r1); // Fixed array length (as smi). |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1075 | PrepareForBailoutForId(stmt->PrepareId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1076 | __ mov(r0, Operand(Smi::FromInt(0))); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1077 | __ Push(r0); // Initial index. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1078 | |
| 1079 | // Generate code for doing the condition check. |
| 1080 | __ bind(&loop); |
| 1081 | SetExpressionAsStatementPosition(stmt->each()); |
| 1082 | |
| 1083 | // Load the current count to r0, load the length to r1. |
| 1084 | __ Ldrd(r0, r1, MemOperand(sp, 0 * kPointerSize)); |
| 1085 | __ cmp(r0, r1); // Compare to the array length. |
| 1086 | __ b(hs, loop_statement.break_label()); |
| 1087 | |
| 1088 | // Get the current entry of the array into register r3. |
| 1089 | __ ldr(r2, MemOperand(sp, 2 * kPointerSize)); |
| 1090 | __ add(r2, r2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1091 | __ ldr(r3, MemOperand::PointerAddressFromSmiKey(r2, r0)); |
| 1092 | |
| 1093 | // Get the expected map from the stack or a smi in the |
| 1094 | // permanent slow case into register r2. |
| 1095 | __ ldr(r2, MemOperand(sp, 3 * kPointerSize)); |
| 1096 | |
| 1097 | // Check if the expected map still matches that of the enumerable. |
| 1098 | // If not, we may have to filter the key. |
| 1099 | Label update_each; |
| 1100 | __ ldr(r1, MemOperand(sp, 4 * kPointerSize)); |
| 1101 | __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 1102 | __ cmp(r4, Operand(r2)); |
| 1103 | __ b(eq, &update_each); |
| 1104 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1105 | // We need to filter the key, record slow-path here. |
| 1106 | int const vector_index = SmiFromSlot(slot)->value(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1107 | __ EmitLoadTypeFeedbackVector(r0); |
| 1108 | __ mov(r2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
| 1109 | __ str(r2, FieldMemOperand(r0, FixedArray::OffsetOfElementAt(vector_index))); |
| 1110 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1111 | // Convert the entry to a string or (smi) 0 if it isn't a property |
| 1112 | // any more. If the property has been removed while iterating, we |
| 1113 | // just skip it. |
| 1114 | __ push(r1); // Enumerable. |
| 1115 | __ push(r3); // Current entry. |
| 1116 | __ CallRuntime(Runtime::kForInFilter); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1117 | PrepareForBailoutForId(stmt->FilterId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1118 | __ mov(r3, Operand(r0)); |
| 1119 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
| 1120 | __ cmp(r0, ip); |
| 1121 | __ b(eq, loop_statement.continue_label()); |
| 1122 | |
| 1123 | // Update the 'each' property or variable from the possibly filtered |
| 1124 | // entry in register r3. |
| 1125 | __ bind(&update_each); |
| 1126 | __ mov(result_register(), r3); |
| 1127 | // Perform the assignment as if via '='. |
| 1128 | { EffectContext context(this); |
| 1129 | EmitAssignment(stmt->each(), stmt->EachFeedbackSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1130 | PrepareForBailoutForId(stmt->AssignmentId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1131 | } |
| 1132 | |
| 1133 | // Both Crankshaft and Turbofan expect BodyId to be right before stmt->body(). |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1134 | PrepareForBailoutForId(stmt->BodyId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1135 | // Generate code for the body of the loop. |
| 1136 | Visit(stmt->body()); |
| 1137 | |
| 1138 | // Generate code for the going to the next element by incrementing |
| 1139 | // the index (smi) stored on top of the stack. |
| 1140 | __ bind(loop_statement.continue_label()); |
| 1141 | __ pop(r0); |
| 1142 | __ add(r0, r0, Operand(Smi::FromInt(1))); |
| 1143 | __ push(r0); |
| 1144 | |
| 1145 | EmitBackEdgeBookkeeping(stmt, &loop); |
| 1146 | __ b(&loop); |
| 1147 | |
| 1148 | // Remove the pointers stored on the stack. |
| 1149 | __ bind(loop_statement.break_label()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1150 | DropOperands(5); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1151 | |
| 1152 | // Exit and decrement the loop depth. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1153 | PrepareForBailoutForId(stmt->ExitId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1154 | __ bind(&exit); |
| 1155 | decrement_loop_depth(); |
| 1156 | } |
| 1157 | |
| 1158 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1159 | void FullCodeGenerator::EmitSetHomeObject(Expression* initializer, int offset, |
| 1160 | FeedbackVectorSlot slot) { |
| 1161 | DCHECK(NeedsHomeObject(initializer)); |
| 1162 | __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
| 1163 | __ mov(StoreDescriptor::NameRegister(), |
| 1164 | Operand(isolate()->factory()->home_object_symbol())); |
| 1165 | __ ldr(StoreDescriptor::ValueRegister(), |
| 1166 | MemOperand(sp, offset * kPointerSize)); |
| 1167 | EmitLoadStoreICSlot(slot); |
| 1168 | CallStoreIC(); |
| 1169 | } |
| 1170 | |
| 1171 | |
| 1172 | void FullCodeGenerator::EmitSetHomeObjectAccumulator(Expression* initializer, |
| 1173 | int offset, |
| 1174 | FeedbackVectorSlot slot) { |
| 1175 | DCHECK(NeedsHomeObject(initializer)); |
| 1176 | __ Move(StoreDescriptor::ReceiverRegister(), r0); |
| 1177 | __ mov(StoreDescriptor::NameRegister(), |
| 1178 | Operand(isolate()->factory()->home_object_symbol())); |
| 1179 | __ ldr(StoreDescriptor::ValueRegister(), |
| 1180 | MemOperand(sp, offset * kPointerSize)); |
| 1181 | EmitLoadStoreICSlot(slot); |
| 1182 | CallStoreIC(); |
| 1183 | } |
| 1184 | |
| 1185 | |
| 1186 | void FullCodeGenerator::EmitLoadGlobalCheckExtensions(VariableProxy* proxy, |
| 1187 | TypeofMode typeof_mode, |
| 1188 | Label* slow) { |
| 1189 | Register current = cp; |
| 1190 | Register next = r1; |
| 1191 | Register temp = r2; |
| 1192 | |
| 1193 | Scope* s = scope(); |
| 1194 | while (s != NULL) { |
| 1195 | if (s->num_heap_slots() > 0) { |
| 1196 | if (s->calls_sloppy_eval()) { |
| 1197 | // Check that extension is "the hole". |
| 1198 | __ ldr(temp, ContextMemOperand(current, Context::EXTENSION_INDEX)); |
| 1199 | __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| 1200 | } |
| 1201 | // Load next context in chain. |
| 1202 | __ ldr(next, ContextMemOperand(current, Context::PREVIOUS_INDEX)); |
| 1203 | // Walk the rest of the chain without clobbering cp. |
| 1204 | current = next; |
| 1205 | } |
| 1206 | // If no outer scope calls eval, we do not need to check more |
| 1207 | // context extensions. |
| 1208 | if (!s->outer_scope_calls_sloppy_eval() || s->is_eval_scope()) break; |
| 1209 | s = s->outer_scope(); |
| 1210 | } |
| 1211 | |
| 1212 | if (s->is_eval_scope()) { |
| 1213 | Label loop, fast; |
| 1214 | if (!current.is(next)) { |
| 1215 | __ Move(next, current); |
| 1216 | } |
| 1217 | __ bind(&loop); |
| 1218 | // Terminate at native context. |
| 1219 | __ ldr(temp, FieldMemOperand(next, HeapObject::kMapOffset)); |
| 1220 | __ LoadRoot(ip, Heap::kNativeContextMapRootIndex); |
| 1221 | __ cmp(temp, ip); |
| 1222 | __ b(eq, &fast); |
| 1223 | // Check that extension is "the hole". |
| 1224 | __ ldr(temp, ContextMemOperand(next, Context::EXTENSION_INDEX)); |
| 1225 | __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| 1226 | // Load next context in chain. |
| 1227 | __ ldr(next, ContextMemOperand(next, Context::PREVIOUS_INDEX)); |
| 1228 | __ b(&loop); |
| 1229 | __ bind(&fast); |
| 1230 | } |
| 1231 | |
| 1232 | // All extension objects were empty and it is safe to use a normal global |
| 1233 | // load machinery. |
| 1234 | EmitGlobalVariableLoad(proxy, typeof_mode); |
| 1235 | } |
| 1236 | |
| 1237 | |
| 1238 | MemOperand FullCodeGenerator::ContextSlotOperandCheckExtensions(Variable* var, |
| 1239 | Label* slow) { |
| 1240 | DCHECK(var->IsContextSlot()); |
| 1241 | Register context = cp; |
| 1242 | Register next = r3; |
| 1243 | Register temp = r4; |
| 1244 | |
| 1245 | for (Scope* s = scope(); s != var->scope(); s = s->outer_scope()) { |
| 1246 | if (s->num_heap_slots() > 0) { |
| 1247 | if (s->calls_sloppy_eval()) { |
| 1248 | // Check that extension is "the hole". |
| 1249 | __ ldr(temp, ContextMemOperand(context, Context::EXTENSION_INDEX)); |
| 1250 | __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| 1251 | } |
| 1252 | __ ldr(next, ContextMemOperand(context, Context::PREVIOUS_INDEX)); |
| 1253 | // Walk the rest of the chain without clobbering cp. |
| 1254 | context = next; |
| 1255 | } |
| 1256 | } |
| 1257 | // Check that last extension is "the hole". |
| 1258 | __ ldr(temp, ContextMemOperand(context, Context::EXTENSION_INDEX)); |
| 1259 | __ JumpIfNotRoot(temp, Heap::kTheHoleValueRootIndex, slow); |
| 1260 | |
| 1261 | // This function is used only for loads, not stores, so it's safe to |
| 1262 | // return an cp-based operand (the write barrier cannot be allowed to |
| 1263 | // destroy the cp register). |
| 1264 | return ContextMemOperand(context, var->index()); |
| 1265 | } |
| 1266 | |
| 1267 | |
| 1268 | void FullCodeGenerator::EmitDynamicLookupFastCase(VariableProxy* proxy, |
| 1269 | TypeofMode typeof_mode, |
| 1270 | Label* slow, Label* done) { |
| 1271 | // Generate fast-case code for variables that might be shadowed by |
| 1272 | // eval-introduced variables. Eval is used a lot without |
| 1273 | // introducing variables. In those cases, we do not want to |
| 1274 | // perform a runtime call for all variables in the scope |
| 1275 | // containing the eval. |
| 1276 | Variable* var = proxy->var(); |
| 1277 | if (var->mode() == DYNAMIC_GLOBAL) { |
| 1278 | EmitLoadGlobalCheckExtensions(proxy, typeof_mode, slow); |
| 1279 | __ jmp(done); |
| 1280 | } else if (var->mode() == DYNAMIC_LOCAL) { |
| 1281 | Variable* local = var->local_if_not_shadowed(); |
| 1282 | __ ldr(r0, ContextSlotOperandCheckExtensions(local, slow)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1283 | if (local->mode() == LET || local->mode() == CONST) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1284 | __ CompareRoot(r0, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1285 | __ b(ne, done); |
| 1286 | __ mov(r0, Operand(var->name())); |
| 1287 | __ push(r0); |
| 1288 | __ CallRuntime(Runtime::kThrowReferenceError); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1289 | } |
| 1290 | __ jmp(done); |
| 1291 | } |
| 1292 | } |
| 1293 | |
| 1294 | |
| 1295 | void FullCodeGenerator::EmitGlobalVariableLoad(VariableProxy* proxy, |
| 1296 | TypeofMode typeof_mode) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1297 | #ifdef DEBUG |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1298 | Variable* var = proxy->var(); |
| 1299 | DCHECK(var->IsUnallocatedOrGlobalSlot() || |
| 1300 | (var->IsLookupSlot() && var->mode() == DYNAMIC_GLOBAL)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1301 | #endif |
| 1302 | __ mov(LoadGlobalDescriptor::SlotRegister(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1303 | Operand(SmiFromSlot(proxy->VariableFeedbackSlot()))); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1304 | CallLoadGlobalIC(typeof_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | void FullCodeGenerator::EmitVariableLoad(VariableProxy* proxy, |
| 1309 | TypeofMode typeof_mode) { |
| 1310 | // Record position before possible IC call. |
| 1311 | SetExpressionPosition(proxy); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1312 | PrepareForBailoutForId(proxy->BeforeId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1313 | Variable* var = proxy->var(); |
| 1314 | |
| 1315 | // Three cases: global variables, lookup variables, and all other types of |
| 1316 | // variables. |
| 1317 | switch (var->location()) { |
| 1318 | case VariableLocation::GLOBAL: |
| 1319 | case VariableLocation::UNALLOCATED: { |
| 1320 | Comment cmnt(masm_, "[ Global variable"); |
| 1321 | EmitGlobalVariableLoad(proxy, typeof_mode); |
| 1322 | context()->Plug(r0); |
| 1323 | break; |
| 1324 | } |
| 1325 | |
| 1326 | case VariableLocation::PARAMETER: |
| 1327 | case VariableLocation::LOCAL: |
| 1328 | case VariableLocation::CONTEXT: { |
| 1329 | DCHECK_EQ(NOT_INSIDE_TYPEOF, typeof_mode); |
| 1330 | Comment cmnt(masm_, var->IsContextSlot() ? "[ Context variable" |
| 1331 | : "[ Stack variable"); |
| 1332 | if (NeedsHoleCheckForLoad(proxy)) { |
| 1333 | // Let and const need a read barrier. |
| 1334 | GetVar(r0, var); |
| 1335 | __ CompareRoot(r0, Heap::kTheHoleValueRootIndex); |
| 1336 | if (var->mode() == LET || var->mode() == CONST) { |
| 1337 | // Throw a reference error when using an uninitialized let/const |
| 1338 | // binding in harmony mode. |
| 1339 | Label done; |
| 1340 | __ b(ne, &done); |
| 1341 | __ mov(r0, Operand(var->name())); |
| 1342 | __ push(r0); |
| 1343 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 1344 | __ bind(&done); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1345 | } |
| 1346 | context()->Plug(r0); |
| 1347 | break; |
| 1348 | } |
| 1349 | context()->Plug(var); |
| 1350 | break; |
| 1351 | } |
| 1352 | |
| 1353 | case VariableLocation::LOOKUP: { |
| 1354 | Comment cmnt(masm_, "[ Lookup variable"); |
| 1355 | Label done, slow; |
| 1356 | // Generate code for loading from variables potentially shadowed |
| 1357 | // by eval-introduced variables. |
| 1358 | EmitDynamicLookupFastCase(proxy, typeof_mode, &slow, &done); |
| 1359 | __ bind(&slow); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1360 | __ Push(var->name()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1361 | Runtime::FunctionId function_id = |
| 1362 | typeof_mode == NOT_INSIDE_TYPEOF |
| 1363 | ? Runtime::kLoadLookupSlot |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1364 | : Runtime::kLoadLookupSlotInsideTypeof; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1365 | __ CallRuntime(function_id); |
| 1366 | __ bind(&done); |
| 1367 | context()->Plug(r0); |
| 1368 | } |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1373 | void FullCodeGenerator::EmitAccessor(ObjectLiteralProperty* property) { |
| 1374 | Expression* expression = (property == NULL) ? NULL : property->value(); |
| 1375 | if (expression == NULL) { |
| 1376 | __ LoadRoot(r1, Heap::kNullValueRootIndex); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1377 | PushOperand(r1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1378 | } else { |
| 1379 | VisitForStackValue(expression); |
| 1380 | if (NeedsHomeObject(expression)) { |
| 1381 | DCHECK(property->kind() == ObjectLiteral::Property::GETTER || |
| 1382 | property->kind() == ObjectLiteral::Property::SETTER); |
| 1383 | int offset = property->kind() == ObjectLiteral::Property::GETTER ? 2 : 3; |
| 1384 | EmitSetHomeObject(expression, offset, property->GetSlot()); |
| 1385 | } |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | |
| 1390 | void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
| 1391 | Comment cmnt(masm_, "[ ObjectLiteral"); |
| 1392 | |
| 1393 | Handle<FixedArray> constant_properties = expr->constant_properties(); |
| 1394 | __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1395 | __ mov(r2, Operand(Smi::FromInt(expr->literal_index()))); |
| 1396 | __ mov(r1, Operand(constant_properties)); |
| 1397 | int flags = expr->ComputeFlags(); |
| 1398 | __ mov(r0, Operand(Smi::FromInt(flags))); |
| 1399 | if (MustCreateObjectLiteralWithRuntime(expr)) { |
| 1400 | __ Push(r3, r2, r1, r0); |
| 1401 | __ CallRuntime(Runtime::kCreateObjectLiteral); |
| 1402 | } else { |
| 1403 | FastCloneShallowObjectStub stub(isolate(), expr->properties_count()); |
| 1404 | __ CallStub(&stub); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1405 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1406 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1407 | PrepareForBailoutForId(expr->CreateLiteralId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1408 | |
| 1409 | // If result_saved is true the result is on top of the stack. If |
| 1410 | // result_saved is false the result is in r0. |
| 1411 | bool result_saved = false; |
| 1412 | |
| 1413 | AccessorTable accessor_table(zone()); |
| 1414 | int property_index = 0; |
| 1415 | for (; property_index < expr->properties()->length(); property_index++) { |
| 1416 | ObjectLiteral::Property* property = expr->properties()->at(property_index); |
| 1417 | if (property->is_computed_name()) break; |
| 1418 | if (property->IsCompileTimeValue()) continue; |
| 1419 | |
| 1420 | Literal* key = property->key()->AsLiteral(); |
| 1421 | Expression* value = property->value(); |
| 1422 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1423 | PushOperand(r0); // Save result on stack |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1424 | result_saved = true; |
| 1425 | } |
| 1426 | switch (property->kind()) { |
| 1427 | case ObjectLiteral::Property::CONSTANT: |
| 1428 | UNREACHABLE(); |
| 1429 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1430 | DCHECK(!CompileTimeValue::IsCompileTimeValue(property->value())); |
| 1431 | // Fall through. |
| 1432 | case ObjectLiteral::Property::COMPUTED: |
| 1433 | // It is safe to use [[Put]] here because the boilerplate already |
| 1434 | // contains computed properties with an uninitialized value. |
| 1435 | if (key->value()->IsInternalizedString()) { |
| 1436 | if (property->emit_store()) { |
| 1437 | VisitForAccumulatorValue(value); |
| 1438 | DCHECK(StoreDescriptor::ValueRegister().is(r0)); |
| 1439 | __ mov(StoreDescriptor::NameRegister(), Operand(key->value())); |
| 1440 | __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp)); |
| 1441 | EmitLoadStoreICSlot(property->GetSlot(0)); |
| 1442 | CallStoreIC(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1443 | PrepareForBailoutForId(key->id(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1444 | |
| 1445 | if (NeedsHomeObject(value)) { |
| 1446 | EmitSetHomeObjectAccumulator(value, 0, property->GetSlot(1)); |
| 1447 | } |
| 1448 | } else { |
| 1449 | VisitForEffect(value); |
| 1450 | } |
| 1451 | break; |
| 1452 | } |
| 1453 | // Duplicate receiver on stack. |
| 1454 | __ ldr(r0, MemOperand(sp)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1455 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1456 | VisitForStackValue(key); |
| 1457 | VisitForStackValue(value); |
| 1458 | if (property->emit_store()) { |
| 1459 | if (NeedsHomeObject(value)) { |
| 1460 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 1461 | } |
| 1462 | __ mov(r0, Operand(Smi::FromInt(SLOPPY))); // PropertyAttributes |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1463 | PushOperand(r0); |
| 1464 | CallRuntimeWithOperands(Runtime::kSetProperty); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1465 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1466 | DropOperands(3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1467 | } |
| 1468 | break; |
| 1469 | case ObjectLiteral::Property::PROTOTYPE: |
| 1470 | // Duplicate receiver on stack. |
| 1471 | __ ldr(r0, MemOperand(sp)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1472 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1473 | VisitForStackValue(value); |
| 1474 | DCHECK(property->emit_store()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1475 | CallRuntimeWithOperands(Runtime::kInternalSetPrototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1476 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1477 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1478 | break; |
| 1479 | |
| 1480 | case ObjectLiteral::Property::GETTER: |
| 1481 | if (property->emit_store()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1482 | AccessorTable::Iterator it = accessor_table.lookup(key); |
| 1483 | it->second->bailout_id = expr->GetIdForPropertySet(property_index); |
| 1484 | it->second->getter = property; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1485 | } |
| 1486 | break; |
| 1487 | case ObjectLiteral::Property::SETTER: |
| 1488 | if (property->emit_store()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1489 | AccessorTable::Iterator it = accessor_table.lookup(key); |
| 1490 | it->second->bailout_id = expr->GetIdForPropertySet(property_index); |
| 1491 | it->second->setter = property; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1492 | } |
| 1493 | break; |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | // Emit code to define accessors, using only a single call to the runtime for |
| 1498 | // each pair of corresponding getters and setters. |
| 1499 | for (AccessorTable::Iterator it = accessor_table.begin(); |
| 1500 | it != accessor_table.end(); |
| 1501 | ++it) { |
| 1502 | __ ldr(r0, MemOperand(sp)); // Duplicate receiver. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1503 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1504 | VisitForStackValue(it->first); |
| 1505 | EmitAccessor(it->second->getter); |
| 1506 | EmitAccessor(it->second->setter); |
| 1507 | __ mov(r0, Operand(Smi::FromInt(NONE))); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1508 | PushOperand(r0); |
| 1509 | CallRuntimeWithOperands(Runtime::kDefineAccessorPropertyUnchecked); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1510 | PrepareForBailoutForId(it->second->bailout_id, BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1511 | } |
| 1512 | |
| 1513 | // Object literals have two parts. The "static" part on the left contains no |
| 1514 | // computed property names, and so we can compute its map ahead of time; see |
| 1515 | // runtime.cc::CreateObjectLiteralBoilerplate. The second "dynamic" part |
| 1516 | // starts with the first computed property name, and continues with all |
| 1517 | // properties to its right. All the code from above initializes the static |
| 1518 | // component of the object literal, and arranges for the map of the result to |
| 1519 | // reflect the static order in which the keys appear. For the dynamic |
| 1520 | // properties, we compile them into a series of "SetOwnProperty" runtime |
| 1521 | // calls. This will preserve insertion order. |
| 1522 | for (; property_index < expr->properties()->length(); property_index++) { |
| 1523 | ObjectLiteral::Property* property = expr->properties()->at(property_index); |
| 1524 | |
| 1525 | Expression* value = property->value(); |
| 1526 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1527 | PushOperand(r0); // Save result on the stack |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1528 | result_saved = true; |
| 1529 | } |
| 1530 | |
| 1531 | __ ldr(r0, MemOperand(sp)); // Duplicate receiver. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1532 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1533 | |
| 1534 | if (property->kind() == ObjectLiteral::Property::PROTOTYPE) { |
| 1535 | DCHECK(!property->is_computed_name()); |
| 1536 | VisitForStackValue(value); |
| 1537 | DCHECK(property->emit_store()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1538 | CallRuntimeWithOperands(Runtime::kInternalSetPrototype); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1539 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1540 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1541 | } else { |
| 1542 | EmitPropertyKey(property, expr->GetIdForPropertyName(property_index)); |
| 1543 | VisitForStackValue(value); |
| 1544 | if (NeedsHomeObject(value)) { |
| 1545 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 1546 | } |
| 1547 | |
| 1548 | switch (property->kind()) { |
| 1549 | case ObjectLiteral::Property::CONSTANT: |
| 1550 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1551 | case ObjectLiteral::Property::COMPUTED: |
| 1552 | if (property->emit_store()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1553 | PushOperand(Smi::FromInt(NONE)); |
| 1554 | PushOperand(Smi::FromInt(property->NeedsSetFunctionName())); |
| 1555 | CallRuntimeWithOperands(Runtime::kDefineDataPropertyInLiteral); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1556 | PrepareForBailoutForId(expr->GetIdForPropertySet(property_index), |
| 1557 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1558 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1559 | DropOperands(3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1560 | } |
| 1561 | break; |
| 1562 | |
| 1563 | case ObjectLiteral::Property::PROTOTYPE: |
| 1564 | UNREACHABLE(); |
| 1565 | break; |
| 1566 | |
| 1567 | case ObjectLiteral::Property::GETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1568 | PushOperand(Smi::FromInt(NONE)); |
| 1569 | CallRuntimeWithOperands(Runtime::kDefineGetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1570 | break; |
| 1571 | |
| 1572 | case ObjectLiteral::Property::SETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1573 | PushOperand(Smi::FromInt(NONE)); |
| 1574 | CallRuntimeWithOperands(Runtime::kDefineSetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1575 | break; |
| 1576 | } |
| 1577 | } |
| 1578 | } |
| 1579 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1580 | if (result_saved) { |
| 1581 | context()->PlugTOS(); |
| 1582 | } else { |
| 1583 | context()->Plug(r0); |
| 1584 | } |
| 1585 | } |
| 1586 | |
| 1587 | |
| 1588 | void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
| 1589 | Comment cmnt(masm_, "[ ArrayLiteral"); |
| 1590 | |
| 1591 | Handle<FixedArray> constant_elements = expr->constant_elements(); |
| 1592 | bool has_fast_elements = |
| 1593 | IsFastObjectElementsKind(expr->constant_elements_kind()); |
| 1594 | Handle<FixedArrayBase> constant_elements_values( |
| 1595 | FixedArrayBase::cast(constant_elements->get(1))); |
| 1596 | |
| 1597 | AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; |
| 1598 | if (has_fast_elements && !FLAG_allocation_site_pretenuring) { |
| 1599 | // If the only customer of allocation sites is transitioning, then |
| 1600 | // we can turn it off if we don't have anywhere else to transition to. |
| 1601 | allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; |
| 1602 | } |
| 1603 | |
| 1604 | __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1605 | __ mov(r2, Operand(Smi::FromInt(expr->literal_index()))); |
| 1606 | __ mov(r1, Operand(constant_elements)); |
| 1607 | if (MustCreateArrayLiteralWithRuntime(expr)) { |
| 1608 | __ mov(r0, Operand(Smi::FromInt(expr->ComputeFlags()))); |
| 1609 | __ Push(r3, r2, r1, r0); |
| 1610 | __ CallRuntime(Runtime::kCreateArrayLiteral); |
| 1611 | } else { |
| 1612 | FastCloneShallowArrayStub stub(isolate(), allocation_site_mode); |
| 1613 | __ CallStub(&stub); |
| 1614 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1615 | PrepareForBailoutForId(expr->CreateLiteralId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1616 | |
| 1617 | bool result_saved = false; // Is the result saved to the stack? |
| 1618 | ZoneList<Expression*>* subexprs = expr->values(); |
| 1619 | int length = subexprs->length(); |
| 1620 | |
| 1621 | // Emit code to evaluate all the non-constant subexpressions and to store |
| 1622 | // them into the newly cloned array. |
| 1623 | int array_index = 0; |
| 1624 | for (; array_index < length; array_index++) { |
| 1625 | Expression* subexpr = subexprs->at(array_index); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1626 | DCHECK(!subexpr->IsSpread()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1627 | |
| 1628 | // If the subexpression is a literal or a simple materialized literal it |
| 1629 | // is already set in the cloned array. |
| 1630 | if (CompileTimeValue::IsCompileTimeValue(subexpr)) continue; |
| 1631 | |
| 1632 | if (!result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1633 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1634 | result_saved = true; |
| 1635 | } |
| 1636 | VisitForAccumulatorValue(subexpr); |
| 1637 | |
| 1638 | __ mov(StoreDescriptor::NameRegister(), Operand(Smi::FromInt(array_index))); |
| 1639 | __ ldr(StoreDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| 1640 | EmitLoadStoreICSlot(expr->LiteralFeedbackSlot()); |
| 1641 | Handle<Code> ic = |
| 1642 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 1643 | CallIC(ic); |
| 1644 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1645 | PrepareForBailoutForId(expr->GetIdForElement(array_index), |
| 1646 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1647 | } |
| 1648 | |
| 1649 | // In case the array literal contains spread expressions it has two parts. The |
| 1650 | // first part is the "static" array which has a literal index is handled |
| 1651 | // above. The second part is the part after the first spread expression |
| 1652 | // (inclusive) and these elements gets appended to the array. Note that the |
| 1653 | // number elements an iterable produces is unknown ahead of time. |
| 1654 | if (array_index < length && result_saved) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1655 | PopOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1656 | result_saved = false; |
| 1657 | } |
| 1658 | for (; array_index < length; array_index++) { |
| 1659 | Expression* subexpr = subexprs->at(array_index); |
| 1660 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1661 | PushOperand(r0); |
| 1662 | DCHECK(!subexpr->IsSpread()); |
| 1663 | VisitForStackValue(subexpr); |
| 1664 | CallRuntimeWithOperands(Runtime::kAppendElement); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1665 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1666 | PrepareForBailoutForId(expr->GetIdForElement(array_index), |
| 1667 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1668 | } |
| 1669 | |
| 1670 | if (result_saved) { |
| 1671 | context()->PlugTOS(); |
| 1672 | } else { |
| 1673 | context()->Plug(r0); |
| 1674 | } |
| 1675 | } |
| 1676 | |
| 1677 | |
| 1678 | void FullCodeGenerator::VisitAssignment(Assignment* expr) { |
| 1679 | DCHECK(expr->target()->IsValidReferenceExpressionOrThis()); |
| 1680 | |
| 1681 | Comment cmnt(masm_, "[ Assignment"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1682 | |
| 1683 | Property* property = expr->target()->AsProperty(); |
| 1684 | LhsKind assign_type = Property::GetAssignType(property); |
| 1685 | |
| 1686 | // Evaluate LHS expression. |
| 1687 | switch (assign_type) { |
| 1688 | case VARIABLE: |
| 1689 | // Nothing to do here. |
| 1690 | break; |
| 1691 | case NAMED_PROPERTY: |
| 1692 | if (expr->is_compound()) { |
| 1693 | // We need the receiver both on the stack and in the register. |
| 1694 | VisitForStackValue(property->obj()); |
| 1695 | __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| 1696 | } else { |
| 1697 | VisitForStackValue(property->obj()); |
| 1698 | } |
| 1699 | break; |
| 1700 | case NAMED_SUPER_PROPERTY: |
| 1701 | VisitForStackValue( |
| 1702 | property->obj()->AsSuperPropertyReference()->this_var()); |
| 1703 | VisitForAccumulatorValue( |
| 1704 | property->obj()->AsSuperPropertyReference()->home_object()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1705 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1706 | if (expr->is_compound()) { |
| 1707 | const Register scratch = r1; |
| 1708 | __ ldr(scratch, MemOperand(sp, kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1709 | PushOperand(scratch); |
| 1710 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1711 | } |
| 1712 | break; |
| 1713 | case KEYED_SUPER_PROPERTY: |
| 1714 | VisitForStackValue( |
| 1715 | property->obj()->AsSuperPropertyReference()->this_var()); |
| 1716 | VisitForStackValue( |
| 1717 | property->obj()->AsSuperPropertyReference()->home_object()); |
| 1718 | VisitForAccumulatorValue(property->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1719 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1720 | if (expr->is_compound()) { |
| 1721 | const Register scratch = r1; |
| 1722 | __ ldr(scratch, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1723 | PushOperand(scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1724 | __ ldr(scratch, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1725 | PushOperand(scratch); |
| 1726 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1727 | } |
| 1728 | break; |
| 1729 | case KEYED_PROPERTY: |
| 1730 | if (expr->is_compound()) { |
| 1731 | VisitForStackValue(property->obj()); |
| 1732 | VisitForStackValue(property->key()); |
| 1733 | __ ldr(LoadDescriptor::ReceiverRegister(), |
| 1734 | MemOperand(sp, 1 * kPointerSize)); |
| 1735 | __ ldr(LoadDescriptor::NameRegister(), MemOperand(sp, 0)); |
| 1736 | } else { |
| 1737 | VisitForStackValue(property->obj()); |
| 1738 | VisitForStackValue(property->key()); |
| 1739 | } |
| 1740 | break; |
| 1741 | } |
| 1742 | |
| 1743 | // For compound assignments we need another deoptimization point after the |
| 1744 | // variable/property load. |
| 1745 | if (expr->is_compound()) { |
| 1746 | { AccumulatorValueContext context(this); |
| 1747 | switch (assign_type) { |
| 1748 | case VARIABLE: |
| 1749 | EmitVariableLoad(expr->target()->AsVariableProxy()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1750 | PrepareForBailout(expr->target(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1751 | break; |
| 1752 | case NAMED_PROPERTY: |
| 1753 | EmitNamedPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1754 | PrepareForBailoutForId(property->LoadId(), |
| 1755 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1756 | break; |
| 1757 | case NAMED_SUPER_PROPERTY: |
| 1758 | EmitNamedSuperPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1759 | PrepareForBailoutForId(property->LoadId(), |
| 1760 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1761 | break; |
| 1762 | case KEYED_SUPER_PROPERTY: |
| 1763 | EmitKeyedSuperPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1764 | PrepareForBailoutForId(property->LoadId(), |
| 1765 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1766 | break; |
| 1767 | case KEYED_PROPERTY: |
| 1768 | EmitKeyedPropertyLoad(property); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1769 | PrepareForBailoutForId(property->LoadId(), |
| 1770 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1771 | break; |
| 1772 | } |
| 1773 | } |
| 1774 | |
| 1775 | Token::Value op = expr->binary_op(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1776 | PushOperand(r0); // Left operand goes on the stack. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1777 | VisitForAccumulatorValue(expr->value()); |
| 1778 | |
| 1779 | AccumulatorValueContext context(this); |
| 1780 | if (ShouldInlineSmiCase(op)) { |
| 1781 | EmitInlineSmiBinaryOp(expr->binary_operation(), |
| 1782 | op, |
| 1783 | expr->target(), |
| 1784 | expr->value()); |
| 1785 | } else { |
| 1786 | EmitBinaryOp(expr->binary_operation(), op); |
| 1787 | } |
| 1788 | |
| 1789 | // Deoptimization point in case the binary operation may have side effects. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1790 | PrepareForBailout(expr->binary_operation(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1791 | } else { |
| 1792 | VisitForAccumulatorValue(expr->value()); |
| 1793 | } |
| 1794 | |
| 1795 | SetExpressionPosition(expr); |
| 1796 | |
| 1797 | // Store the value. |
| 1798 | switch (assign_type) { |
| 1799 | case VARIABLE: |
| 1800 | EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), |
| 1801 | expr->op(), expr->AssignmentSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1802 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1803 | context()->Plug(r0); |
| 1804 | break; |
| 1805 | case NAMED_PROPERTY: |
| 1806 | EmitNamedPropertyAssignment(expr); |
| 1807 | break; |
| 1808 | case NAMED_SUPER_PROPERTY: |
| 1809 | EmitNamedSuperPropertyStore(property); |
| 1810 | context()->Plug(r0); |
| 1811 | break; |
| 1812 | case KEYED_SUPER_PROPERTY: |
| 1813 | EmitKeyedSuperPropertyStore(property); |
| 1814 | context()->Plug(r0); |
| 1815 | break; |
| 1816 | case KEYED_PROPERTY: |
| 1817 | EmitKeyedPropertyAssignment(expr); |
| 1818 | break; |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | |
| 1823 | void FullCodeGenerator::VisitYield(Yield* expr) { |
| 1824 | Comment cmnt(masm_, "[ Yield"); |
| 1825 | SetExpressionPosition(expr); |
| 1826 | |
| 1827 | // Evaluate yielded value first; the initial iterator definition depends on |
| 1828 | // this. It stays on the stack while we update the iterator. |
| 1829 | VisitForStackValue(expr->expression()); |
| 1830 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1831 | Label suspend, continuation, post_runtime, resume, exception; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1832 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1833 | __ jmp(&suspend); |
| 1834 | __ bind(&continuation); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1835 | // When we arrive here, r0 holds the generator object. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1836 | __ RecordGeneratorContinuation(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1837 | __ ldr(r1, FieldMemOperand(r0, JSGeneratorObject::kResumeModeOffset)); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1838 | __ ldr(r0, FieldMemOperand(r0, JSGeneratorObject::kInputOrDebugPosOffset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1839 | STATIC_ASSERT(JSGeneratorObject::kNext < JSGeneratorObject::kReturn); |
| 1840 | STATIC_ASSERT(JSGeneratorObject::kThrow > JSGeneratorObject::kReturn); |
| 1841 | __ cmp(r1, Operand(Smi::FromInt(JSGeneratorObject::kReturn))); |
| 1842 | __ b(lt, &resume); |
| 1843 | __ Push(result_register()); |
| 1844 | __ b(gt, &exception); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1845 | EmitCreateIteratorResult(true); |
| 1846 | EmitUnwindAndReturn(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1847 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1848 | __ bind(&exception); |
| 1849 | __ CallRuntime(Runtime::kThrow); |
| 1850 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1851 | __ bind(&suspend); |
| 1852 | OperandStackDepthIncrement(1); // Not popped on this path. |
| 1853 | VisitForAccumulatorValue(expr->generator_object()); |
| 1854 | DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
| 1855 | __ mov(r1, Operand(Smi::FromInt(continuation.pos()))); |
| 1856 | __ str(r1, FieldMemOperand(r0, JSGeneratorObject::kContinuationOffset)); |
| 1857 | __ str(cp, FieldMemOperand(r0, JSGeneratorObject::kContextOffset)); |
| 1858 | __ mov(r1, cp); |
| 1859 | __ RecordWriteField(r0, JSGeneratorObject::kContextOffset, r1, r2, |
| 1860 | kLRHasBeenSaved, kDontSaveFPRegs); |
| 1861 | __ add(r1, fp, Operand(StandardFrameConstants::kExpressionsOffset)); |
| 1862 | __ cmp(sp, r1); |
| 1863 | __ b(eq, &post_runtime); |
| 1864 | __ push(r0); // generator object |
| 1865 | __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1866 | RestoreContext(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1867 | __ bind(&post_runtime); |
| 1868 | PopOperand(result_register()); |
| 1869 | EmitReturnSequence(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1870 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1871 | __ bind(&resume); |
| 1872 | context()->Plug(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1873 | } |
| 1874 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1875 | void FullCodeGenerator::PushOperands(Register reg1, Register reg2) { |
| 1876 | OperandStackDepthIncrement(2); |
| 1877 | __ Push(reg1, reg2); |
| 1878 | } |
| 1879 | |
| 1880 | void FullCodeGenerator::PopOperands(Register reg1, Register reg2) { |
| 1881 | OperandStackDepthDecrement(2); |
| 1882 | __ Pop(reg1, reg2); |
| 1883 | } |
| 1884 | |
| 1885 | void FullCodeGenerator::EmitOperandStackDepthCheck() { |
| 1886 | if (FLAG_debug_code) { |
| 1887 | int expected_diff = StandardFrameConstants::kFixedFrameSizeFromFp + |
| 1888 | operand_stack_depth_ * kPointerSize; |
| 1889 | __ sub(r0, fp, sp); |
| 1890 | __ cmp(r0, Operand(expected_diff)); |
| 1891 | __ Assert(eq, kUnexpectedStackDepth); |
| 1892 | } |
| 1893 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1894 | |
| 1895 | void FullCodeGenerator::EmitCreateIteratorResult(bool done) { |
| 1896 | Label allocate, done_allocate; |
| 1897 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1898 | __ Allocate(JSIteratorResult::kSize, r0, r2, r3, &allocate, |
| 1899 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1900 | __ b(&done_allocate); |
| 1901 | |
| 1902 | __ bind(&allocate); |
| 1903 | __ Push(Smi::FromInt(JSIteratorResult::kSize)); |
| 1904 | __ CallRuntime(Runtime::kAllocateInNewSpace); |
| 1905 | |
| 1906 | __ bind(&done_allocate); |
| 1907 | __ LoadNativeContextSlot(Context::ITERATOR_RESULT_MAP_INDEX, r1); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1908 | PopOperand(r2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1909 | __ LoadRoot(r3, |
| 1910 | done ? Heap::kTrueValueRootIndex : Heap::kFalseValueRootIndex); |
| 1911 | __ LoadRoot(r4, Heap::kEmptyFixedArrayRootIndex); |
| 1912 | __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 1913 | __ str(r4, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 1914 | __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 1915 | __ str(r2, FieldMemOperand(r0, JSIteratorResult::kValueOffset)); |
| 1916 | __ str(r3, FieldMemOperand(r0, JSIteratorResult::kDoneOffset)); |
| 1917 | } |
| 1918 | |
| 1919 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1920 | void FullCodeGenerator::EmitInlineSmiBinaryOp(BinaryOperation* expr, |
| 1921 | Token::Value op, |
| 1922 | Expression* left_expr, |
| 1923 | Expression* right_expr) { |
| 1924 | Label done, smi_case, stub_call; |
| 1925 | |
| 1926 | Register scratch1 = r2; |
| 1927 | Register scratch2 = r3; |
| 1928 | |
| 1929 | // Get the arguments. |
| 1930 | Register left = r1; |
| 1931 | Register right = r0; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1932 | PopOperand(left); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1933 | |
| 1934 | // Perform combined smi check on both operands. |
| 1935 | __ orr(scratch1, left, Operand(right)); |
| 1936 | STATIC_ASSERT(kSmiTag == 0); |
| 1937 | JumpPatchSite patch_site(masm_); |
| 1938 | patch_site.EmitJumpIfSmi(scratch1, &smi_case); |
| 1939 | |
| 1940 | __ bind(&stub_call); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1941 | Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1942 | CallIC(code, expr->BinaryOperationFeedbackId()); |
| 1943 | patch_site.EmitPatchInfo(); |
| 1944 | __ jmp(&done); |
| 1945 | |
| 1946 | __ bind(&smi_case); |
| 1947 | // Smi case. This code works the same way as the smi-smi case in the type |
| 1948 | // recording binary operation stub, see |
| 1949 | switch (op) { |
| 1950 | case Token::SAR: |
| 1951 | __ GetLeastBitsFromSmi(scratch1, right, 5); |
| 1952 | __ mov(right, Operand(left, ASR, scratch1)); |
| 1953 | __ bic(right, right, Operand(kSmiTagMask)); |
| 1954 | break; |
| 1955 | case Token::SHL: { |
| 1956 | __ SmiUntag(scratch1, left); |
| 1957 | __ GetLeastBitsFromSmi(scratch2, right, 5); |
| 1958 | __ mov(scratch1, Operand(scratch1, LSL, scratch2)); |
| 1959 | __ TrySmiTag(right, scratch1, &stub_call); |
| 1960 | break; |
| 1961 | } |
| 1962 | case Token::SHR: { |
| 1963 | __ SmiUntag(scratch1, left); |
| 1964 | __ GetLeastBitsFromSmi(scratch2, right, 5); |
| 1965 | __ mov(scratch1, Operand(scratch1, LSR, scratch2)); |
| 1966 | __ tst(scratch1, Operand(0xc0000000)); |
| 1967 | __ b(ne, &stub_call); |
| 1968 | __ SmiTag(right, scratch1); |
| 1969 | break; |
| 1970 | } |
| 1971 | case Token::ADD: |
| 1972 | __ add(scratch1, left, Operand(right), SetCC); |
| 1973 | __ b(vs, &stub_call); |
| 1974 | __ mov(right, scratch1); |
| 1975 | break; |
| 1976 | case Token::SUB: |
| 1977 | __ sub(scratch1, left, Operand(right), SetCC); |
| 1978 | __ b(vs, &stub_call); |
| 1979 | __ mov(right, scratch1); |
| 1980 | break; |
| 1981 | case Token::MUL: { |
| 1982 | __ SmiUntag(ip, right); |
| 1983 | __ smull(scratch1, scratch2, left, ip); |
| 1984 | __ mov(ip, Operand(scratch1, ASR, 31)); |
| 1985 | __ cmp(ip, Operand(scratch2)); |
| 1986 | __ b(ne, &stub_call); |
| 1987 | __ cmp(scratch1, Operand::Zero()); |
| 1988 | __ mov(right, Operand(scratch1), LeaveCC, ne); |
| 1989 | __ b(ne, &done); |
| 1990 | __ add(scratch2, right, Operand(left), SetCC); |
| 1991 | __ mov(right, Operand(Smi::FromInt(0)), LeaveCC, pl); |
| 1992 | __ b(mi, &stub_call); |
| 1993 | break; |
| 1994 | } |
| 1995 | case Token::BIT_OR: |
| 1996 | __ orr(right, left, Operand(right)); |
| 1997 | break; |
| 1998 | case Token::BIT_AND: |
| 1999 | __ and_(right, left, Operand(right)); |
| 2000 | break; |
| 2001 | case Token::BIT_XOR: |
| 2002 | __ eor(right, left, Operand(right)); |
| 2003 | break; |
| 2004 | default: |
| 2005 | UNREACHABLE(); |
| 2006 | } |
| 2007 | |
| 2008 | __ bind(&done); |
| 2009 | context()->Plug(r0); |
| 2010 | } |
| 2011 | |
| 2012 | |
| 2013 | void FullCodeGenerator::EmitClassDefineProperties(ClassLiteral* lit) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2014 | for (int i = 0; i < lit->properties()->length(); i++) { |
| 2015 | ObjectLiteral::Property* property = lit->properties()->at(i); |
| 2016 | Expression* value = property->value(); |
| 2017 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2018 | Register scratch = r1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2019 | if (property->is_static()) { |
| 2020 | __ ldr(scratch, MemOperand(sp, kPointerSize)); // constructor |
| 2021 | } else { |
| 2022 | __ ldr(scratch, MemOperand(sp, 0)); // prototype |
| 2023 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2024 | PushOperand(scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2025 | EmitPropertyKey(property, lit->GetIdForProperty(i)); |
| 2026 | |
| 2027 | // The static prototype property is read only. We handle the non computed |
| 2028 | // property name case in the parser. Since this is the only case where we |
| 2029 | // need to check for an own read only property we special case this so we do |
| 2030 | // not need to do this for every property. |
| 2031 | if (property->is_static() && property->is_computed_name()) { |
| 2032 | __ CallRuntime(Runtime::kThrowIfStaticPrototype); |
| 2033 | __ push(r0); |
| 2034 | } |
| 2035 | |
| 2036 | VisitForStackValue(value); |
| 2037 | if (NeedsHomeObject(value)) { |
| 2038 | EmitSetHomeObject(value, 2, property->GetSlot()); |
| 2039 | } |
| 2040 | |
| 2041 | switch (property->kind()) { |
| 2042 | case ObjectLiteral::Property::CONSTANT: |
| 2043 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 2044 | case ObjectLiteral::Property::PROTOTYPE: |
| 2045 | UNREACHABLE(); |
| 2046 | case ObjectLiteral::Property::COMPUTED: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2047 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 2048 | PushOperand(Smi::FromInt(property->NeedsSetFunctionName())); |
| 2049 | CallRuntimeWithOperands(Runtime::kDefineDataPropertyInLiteral); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2050 | break; |
| 2051 | |
| 2052 | case ObjectLiteral::Property::GETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2053 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 2054 | CallRuntimeWithOperands(Runtime::kDefineGetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2055 | break; |
| 2056 | |
| 2057 | case ObjectLiteral::Property::SETTER: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2058 | PushOperand(Smi::FromInt(DONT_ENUM)); |
| 2059 | CallRuntimeWithOperands(Runtime::kDefineSetterPropertyUnchecked); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2060 | break; |
| 2061 | |
| 2062 | default: |
| 2063 | UNREACHABLE(); |
| 2064 | } |
| 2065 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2066 | } |
| 2067 | |
| 2068 | |
| 2069 | void FullCodeGenerator::EmitBinaryOp(BinaryOperation* expr, Token::Value op) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2070 | PopOperand(r1); |
| 2071 | Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2072 | JumpPatchSite patch_site(masm_); // unbound, signals no inlined smi code. |
| 2073 | CallIC(code, expr->BinaryOperationFeedbackId()); |
| 2074 | patch_site.EmitPatchInfo(); |
| 2075 | context()->Plug(r0); |
| 2076 | } |
| 2077 | |
| 2078 | |
| 2079 | void FullCodeGenerator::EmitAssignment(Expression* expr, |
| 2080 | FeedbackVectorSlot slot) { |
| 2081 | DCHECK(expr->IsValidReferenceExpressionOrThis()); |
| 2082 | |
| 2083 | Property* prop = expr->AsProperty(); |
| 2084 | LhsKind assign_type = Property::GetAssignType(prop); |
| 2085 | |
| 2086 | switch (assign_type) { |
| 2087 | case VARIABLE: { |
| 2088 | Variable* var = expr->AsVariableProxy()->var(); |
| 2089 | EffectContext context(this); |
| 2090 | EmitVariableAssignment(var, Token::ASSIGN, slot); |
| 2091 | break; |
| 2092 | } |
| 2093 | case NAMED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2094 | PushOperand(r0); // Preserve value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2095 | VisitForAccumulatorValue(prop->obj()); |
| 2096 | __ Move(StoreDescriptor::ReceiverRegister(), r0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2097 | PopOperand(StoreDescriptor::ValueRegister()); // Restore value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2098 | __ mov(StoreDescriptor::NameRegister(), |
| 2099 | Operand(prop->key()->AsLiteral()->value())); |
| 2100 | EmitLoadStoreICSlot(slot); |
| 2101 | CallStoreIC(); |
| 2102 | break; |
| 2103 | } |
| 2104 | case NAMED_SUPER_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2105 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2106 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 2107 | VisitForAccumulatorValue( |
| 2108 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 2109 | // stack: value, this; r0: home_object |
| 2110 | Register scratch = r2; |
| 2111 | Register scratch2 = r3; |
| 2112 | __ mov(scratch, result_register()); // home_object |
| 2113 | __ ldr(r0, MemOperand(sp, kPointerSize)); // value |
| 2114 | __ ldr(scratch2, MemOperand(sp, 0)); // this |
| 2115 | __ str(scratch2, MemOperand(sp, kPointerSize)); // this |
| 2116 | __ str(scratch, MemOperand(sp, 0)); // home_object |
| 2117 | // stack: this, home_object; r0: value |
| 2118 | EmitNamedSuperPropertyStore(prop); |
| 2119 | break; |
| 2120 | } |
| 2121 | case KEYED_SUPER_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2122 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2123 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 2124 | VisitForStackValue( |
| 2125 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 2126 | VisitForAccumulatorValue(prop->key()); |
| 2127 | Register scratch = r2; |
| 2128 | Register scratch2 = r3; |
| 2129 | __ ldr(scratch2, MemOperand(sp, 2 * kPointerSize)); // value |
| 2130 | // stack: value, this, home_object; r0: key, r3: value |
| 2131 | __ ldr(scratch, MemOperand(sp, kPointerSize)); // this |
| 2132 | __ str(scratch, MemOperand(sp, 2 * kPointerSize)); |
| 2133 | __ ldr(scratch, MemOperand(sp, 0)); // home_object |
| 2134 | __ str(scratch, MemOperand(sp, kPointerSize)); |
| 2135 | __ str(r0, MemOperand(sp, 0)); |
| 2136 | __ Move(r0, scratch2); |
| 2137 | // stack: this, home_object, key; r0: value. |
| 2138 | EmitKeyedSuperPropertyStore(prop); |
| 2139 | break; |
| 2140 | } |
| 2141 | case KEYED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2142 | PushOperand(r0); // Preserve value. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2143 | VisitForStackValue(prop->obj()); |
| 2144 | VisitForAccumulatorValue(prop->key()); |
| 2145 | __ Move(StoreDescriptor::NameRegister(), r0); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2146 | PopOperands(StoreDescriptor::ValueRegister(), |
| 2147 | StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2148 | EmitLoadStoreICSlot(slot); |
| 2149 | Handle<Code> ic = |
| 2150 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 2151 | CallIC(ic); |
| 2152 | break; |
| 2153 | } |
| 2154 | } |
| 2155 | context()->Plug(r0); |
| 2156 | } |
| 2157 | |
| 2158 | |
| 2159 | void FullCodeGenerator::EmitStoreToStackLocalOrContextSlot( |
| 2160 | Variable* var, MemOperand location) { |
| 2161 | __ str(result_register(), location); |
| 2162 | if (var->IsContextSlot()) { |
| 2163 | // RecordWrite may destroy all its register arguments. |
| 2164 | __ mov(r3, result_register()); |
| 2165 | int offset = Context::SlotOffset(var->index()); |
| 2166 | __ RecordWriteContextSlot( |
| 2167 | r1, offset, r3, r2, kLRHasBeenSaved, kDontSaveFPRegs); |
| 2168 | } |
| 2169 | } |
| 2170 | |
| 2171 | |
| 2172 | void FullCodeGenerator::EmitVariableAssignment(Variable* var, Token::Value op, |
| 2173 | FeedbackVectorSlot slot) { |
| 2174 | if (var->IsUnallocated()) { |
| 2175 | // Global var, const, or let. |
| 2176 | __ mov(StoreDescriptor::NameRegister(), Operand(var->name())); |
| 2177 | __ LoadGlobalObject(StoreDescriptor::ReceiverRegister()); |
| 2178 | EmitLoadStoreICSlot(slot); |
| 2179 | CallStoreIC(); |
| 2180 | |
| 2181 | } else if (var->mode() == LET && op != Token::INIT) { |
| 2182 | // Non-initializing assignment to let variable needs a write barrier. |
| 2183 | DCHECK(!var->IsLookupSlot()); |
| 2184 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2185 | Label assign; |
| 2186 | MemOperand location = VarOperand(var, r1); |
| 2187 | __ ldr(r3, location); |
| 2188 | __ CompareRoot(r3, Heap::kTheHoleValueRootIndex); |
| 2189 | __ b(ne, &assign); |
| 2190 | __ mov(r3, Operand(var->name())); |
| 2191 | __ push(r3); |
| 2192 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2193 | // Perform the assignment. |
| 2194 | __ bind(&assign); |
| 2195 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2196 | |
| 2197 | } else if (var->mode() == CONST && op != Token::INIT) { |
| 2198 | // Assignment to const variable needs a write barrier. |
| 2199 | DCHECK(!var->IsLookupSlot()); |
| 2200 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2201 | Label const_error; |
| 2202 | MemOperand location = VarOperand(var, r1); |
| 2203 | __ ldr(r3, location); |
| 2204 | __ CompareRoot(r3, Heap::kTheHoleValueRootIndex); |
| 2205 | __ b(ne, &const_error); |
| 2206 | __ mov(r3, Operand(var->name())); |
| 2207 | __ push(r3); |
| 2208 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2209 | __ bind(&const_error); |
| 2210 | __ CallRuntime(Runtime::kThrowConstAssignError); |
| 2211 | |
| 2212 | } else if (var->is_this() && var->mode() == CONST && op == Token::INIT) { |
| 2213 | // Initializing assignment to const {this} needs a write barrier. |
| 2214 | DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
| 2215 | Label uninitialized_this; |
| 2216 | MemOperand location = VarOperand(var, r1); |
| 2217 | __ ldr(r3, location); |
| 2218 | __ CompareRoot(r3, Heap::kTheHoleValueRootIndex); |
| 2219 | __ b(eq, &uninitialized_this); |
| 2220 | __ mov(r0, Operand(var->name())); |
| 2221 | __ Push(r0); |
| 2222 | __ CallRuntime(Runtime::kThrowReferenceError); |
| 2223 | __ bind(&uninitialized_this); |
| 2224 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2225 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2226 | } else if (!var->is_const_mode() || op == Token::INIT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2227 | if (var->IsLookupSlot()) { |
| 2228 | // Assignment to var. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2229 | __ Push(var->name()); |
| 2230 | __ Push(r0); |
| 2231 | __ CallRuntime(is_strict(language_mode()) |
| 2232 | ? Runtime::kStoreLookupSlot_Strict |
| 2233 | : Runtime::kStoreLookupSlot_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2234 | } else { |
| 2235 | // Assignment to var or initializing assignment to let/const in harmony |
| 2236 | // mode. |
| 2237 | DCHECK((var->IsStackAllocated() || var->IsContextSlot())); |
| 2238 | MemOperand location = VarOperand(var, r1); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2239 | if (FLAG_debug_code && var->mode() == LET && op == Token::INIT) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2240 | // Check for an uninitialized let binding. |
| 2241 | __ ldr(r2, location); |
| 2242 | __ CompareRoot(r2, Heap::kTheHoleValueRootIndex); |
| 2243 | __ Check(eq, kLetBindingReInitialization); |
| 2244 | } |
| 2245 | EmitStoreToStackLocalOrContextSlot(var, location); |
| 2246 | } |
| 2247 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2248 | } else { |
| 2249 | DCHECK(var->mode() == CONST_LEGACY && op != Token::INIT); |
| 2250 | if (is_strict(language_mode())) { |
| 2251 | __ CallRuntime(Runtime::kThrowConstAssignError); |
| 2252 | } |
| 2253 | // Silently ignore store in sloppy mode. |
| 2254 | } |
| 2255 | } |
| 2256 | |
| 2257 | |
| 2258 | void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
| 2259 | // Assignment to a property, using a named store IC. |
| 2260 | Property* prop = expr->target()->AsProperty(); |
| 2261 | DCHECK(prop != NULL); |
| 2262 | DCHECK(prop->key()->IsLiteral()); |
| 2263 | |
| 2264 | __ mov(StoreDescriptor::NameRegister(), |
| 2265 | Operand(prop->key()->AsLiteral()->value())); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2266 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2267 | EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| 2268 | CallStoreIC(); |
| 2269 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2270 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2271 | context()->Plug(r0); |
| 2272 | } |
| 2273 | |
| 2274 | |
| 2275 | void FullCodeGenerator::EmitNamedSuperPropertyStore(Property* prop) { |
| 2276 | // Assignment to named property of super. |
| 2277 | // r0 : value |
| 2278 | // stack : receiver ('this'), home_object |
| 2279 | DCHECK(prop != NULL); |
| 2280 | Literal* key = prop->key()->AsLiteral(); |
| 2281 | DCHECK(key != NULL); |
| 2282 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2283 | PushOperand(key->value()); |
| 2284 | PushOperand(r0); |
| 2285 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 2286 | ? Runtime::kStoreToSuper_Strict |
| 2287 | : Runtime::kStoreToSuper_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2288 | } |
| 2289 | |
| 2290 | |
| 2291 | void FullCodeGenerator::EmitKeyedSuperPropertyStore(Property* prop) { |
| 2292 | // Assignment to named property of super. |
| 2293 | // r0 : value |
| 2294 | // stack : receiver ('this'), home_object, key |
| 2295 | DCHECK(prop != NULL); |
| 2296 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2297 | PushOperand(r0); |
| 2298 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 2299 | ? Runtime::kStoreKeyedToSuper_Strict |
| 2300 | : Runtime::kStoreKeyedToSuper_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2301 | } |
| 2302 | |
| 2303 | |
| 2304 | void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
| 2305 | // Assignment to a property, using a keyed store IC. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2306 | PopOperands(StoreDescriptor::ReceiverRegister(), |
| 2307 | StoreDescriptor::NameRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2308 | DCHECK(StoreDescriptor::ValueRegister().is(r0)); |
| 2309 | |
| 2310 | Handle<Code> ic = |
| 2311 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 2312 | EmitLoadStoreICSlot(expr->AssignmentSlot()); |
| 2313 | CallIC(ic); |
| 2314 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2315 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2316 | context()->Plug(r0); |
| 2317 | } |
| 2318 | |
| 2319 | |
| 2320 | void FullCodeGenerator::CallIC(Handle<Code> code, |
| 2321 | TypeFeedbackId ast_id) { |
| 2322 | ic_total_count_++; |
| 2323 | // All calls must have a predictable size in full-codegen code to ensure that |
| 2324 | // the debugger can patch them correctly. |
| 2325 | __ Call(code, RelocInfo::CODE_TARGET, ast_id, al, |
| 2326 | NEVER_INLINE_TARGET_ADDRESS); |
| 2327 | } |
| 2328 | |
| 2329 | |
| 2330 | // Code common for calls using the IC. |
| 2331 | void FullCodeGenerator::EmitCallWithLoadIC(Call* expr) { |
| 2332 | Expression* callee = expr->expression(); |
| 2333 | |
| 2334 | // Get the target function. |
| 2335 | ConvertReceiverMode convert_mode; |
| 2336 | if (callee->IsVariableProxy()) { |
| 2337 | { StackValueContext context(this); |
| 2338 | EmitVariableLoad(callee->AsVariableProxy()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2339 | PrepareForBailout(callee, BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2340 | } |
| 2341 | // Push undefined as receiver. This is patched in the method prologue if it |
| 2342 | // is a sloppy mode method. |
| 2343 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2344 | PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2345 | convert_mode = ConvertReceiverMode::kNullOrUndefined; |
| 2346 | } else { |
| 2347 | // Load the function from the receiver. |
| 2348 | DCHECK(callee->IsProperty()); |
| 2349 | DCHECK(!callee->AsProperty()->IsSuperAccess()); |
| 2350 | __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| 2351 | EmitNamedPropertyLoad(callee->AsProperty()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2352 | PrepareForBailoutForId(callee->AsProperty()->LoadId(), |
| 2353 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2354 | // Push the target function under the receiver. |
| 2355 | __ ldr(ip, MemOperand(sp, 0)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2356 | PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2357 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 2358 | convert_mode = ConvertReceiverMode::kNotNullOrUndefined; |
| 2359 | } |
| 2360 | |
| 2361 | EmitCall(expr, convert_mode); |
| 2362 | } |
| 2363 | |
| 2364 | |
| 2365 | void FullCodeGenerator::EmitSuperCallWithLoadIC(Call* expr) { |
| 2366 | Expression* callee = expr->expression(); |
| 2367 | DCHECK(callee->IsProperty()); |
| 2368 | Property* prop = callee->AsProperty(); |
| 2369 | DCHECK(prop->IsSuperAccess()); |
| 2370 | SetExpressionPosition(prop); |
| 2371 | |
| 2372 | Literal* key = prop->key()->AsLiteral(); |
| 2373 | DCHECK(!key->value()->IsSmi()); |
| 2374 | // Load the function from the receiver. |
| 2375 | const Register scratch = r1; |
| 2376 | SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| 2377 | VisitForStackValue(super_ref->home_object()); |
| 2378 | VisitForAccumulatorValue(super_ref->this_var()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2379 | PushOperand(r0); |
| 2380 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2381 | __ ldr(scratch, MemOperand(sp, kPointerSize * 2)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2382 | PushOperand(scratch); |
| 2383 | PushOperand(key->value()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2384 | |
| 2385 | // Stack here: |
| 2386 | // - home_object |
| 2387 | // - this (receiver) |
| 2388 | // - this (receiver) <-- LoadFromSuper will pop here and below. |
| 2389 | // - home_object |
| 2390 | // - key |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2391 | CallRuntimeWithOperands(Runtime::kLoadFromSuper); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2392 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2393 | |
| 2394 | // Replace home_object with target function. |
| 2395 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 2396 | |
| 2397 | // Stack here: |
| 2398 | // - target function |
| 2399 | // - this (receiver) |
| 2400 | EmitCall(expr); |
| 2401 | } |
| 2402 | |
| 2403 | |
| 2404 | // Code common for calls using the IC. |
| 2405 | void FullCodeGenerator::EmitKeyedCallWithLoadIC(Call* expr, |
| 2406 | Expression* key) { |
| 2407 | // Load the key. |
| 2408 | VisitForAccumulatorValue(key); |
| 2409 | |
| 2410 | Expression* callee = expr->expression(); |
| 2411 | |
| 2412 | // Load the function from the receiver. |
| 2413 | DCHECK(callee->IsProperty()); |
| 2414 | __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| 2415 | __ Move(LoadDescriptor::NameRegister(), r0); |
| 2416 | EmitKeyedPropertyLoad(callee->AsProperty()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2417 | PrepareForBailoutForId(callee->AsProperty()->LoadId(), |
| 2418 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2419 | |
| 2420 | // Push the target function under the receiver. |
| 2421 | __ ldr(ip, MemOperand(sp, 0)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2422 | PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2423 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 2424 | |
| 2425 | EmitCall(expr, ConvertReceiverMode::kNotNullOrUndefined); |
| 2426 | } |
| 2427 | |
| 2428 | |
| 2429 | void FullCodeGenerator::EmitKeyedSuperCallWithLoadIC(Call* expr) { |
| 2430 | Expression* callee = expr->expression(); |
| 2431 | DCHECK(callee->IsProperty()); |
| 2432 | Property* prop = callee->AsProperty(); |
| 2433 | DCHECK(prop->IsSuperAccess()); |
| 2434 | |
| 2435 | SetExpressionPosition(prop); |
| 2436 | // Load the function from the receiver. |
| 2437 | const Register scratch = r1; |
| 2438 | SuperPropertyReference* super_ref = prop->obj()->AsSuperPropertyReference(); |
| 2439 | VisitForStackValue(super_ref->home_object()); |
| 2440 | VisitForAccumulatorValue(super_ref->this_var()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2441 | PushOperand(r0); |
| 2442 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2443 | __ ldr(scratch, MemOperand(sp, kPointerSize * 2)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2444 | PushOperand(scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2445 | VisitForStackValue(prop->key()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2446 | |
| 2447 | // Stack here: |
| 2448 | // - home_object |
| 2449 | // - this (receiver) |
| 2450 | // - this (receiver) <-- LoadKeyedFromSuper will pop here and below. |
| 2451 | // - home_object |
| 2452 | // - key |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2453 | CallRuntimeWithOperands(Runtime::kLoadKeyedFromSuper); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2454 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2455 | |
| 2456 | // Replace home_object with target function. |
| 2457 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 2458 | |
| 2459 | // Stack here: |
| 2460 | // - target function |
| 2461 | // - this (receiver) |
| 2462 | EmitCall(expr); |
| 2463 | } |
| 2464 | |
| 2465 | |
| 2466 | void FullCodeGenerator::EmitCall(Call* expr, ConvertReceiverMode mode) { |
| 2467 | // Load the arguments. |
| 2468 | ZoneList<Expression*>* args = expr->arguments(); |
| 2469 | int arg_count = args->length(); |
| 2470 | for (int i = 0; i < arg_count; i++) { |
| 2471 | VisitForStackValue(args->at(i)); |
| 2472 | } |
| 2473 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2474 | PrepareForBailoutForId(expr->CallId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2475 | SetCallPosition(expr, expr->tail_call_mode()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2476 | if (expr->tail_call_mode() == TailCallMode::kAllow) { |
| 2477 | if (FLAG_trace) { |
| 2478 | __ CallRuntime(Runtime::kTraceTailCall); |
| 2479 | } |
| 2480 | // Update profiling counters before the tail call since we will |
| 2481 | // not return to this function. |
| 2482 | EmitProfilingCounterHandlingForReturnSequence(true); |
| 2483 | } |
| 2484 | Handle<Code> ic = |
| 2485 | CodeFactory::CallIC(isolate(), arg_count, mode, expr->tail_call_mode()) |
| 2486 | .code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2487 | __ mov(r3, Operand(SmiFromSlot(expr->CallFeedbackICSlot()))); |
| 2488 | __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| 2489 | // Don't assign a type feedback id to the IC, since type feedback is provided |
| 2490 | // by the vector above. |
| 2491 | CallIC(ic); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2492 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2493 | |
| 2494 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2495 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2496 | context()->DropAndPlug(1, r0); |
| 2497 | } |
| 2498 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2499 | void FullCodeGenerator::EmitResolvePossiblyDirectEval(Call* expr) { |
| 2500 | int arg_count = expr->arguments()->length(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2501 | // r4: copy of the first argument or undefined if it doesn't exist. |
| 2502 | if (arg_count > 0) { |
| 2503 | __ ldr(r4, MemOperand(sp, arg_count * kPointerSize)); |
| 2504 | } else { |
| 2505 | __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); |
| 2506 | } |
| 2507 | |
| 2508 | // r3: the receiver of the enclosing function. |
| 2509 | __ ldr(r3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 2510 | |
| 2511 | // r2: language mode. |
| 2512 | __ mov(r2, Operand(Smi::FromInt(language_mode()))); |
| 2513 | |
| 2514 | // r1: the start position of the scope the calls resides in. |
| 2515 | __ mov(r1, Operand(Smi::FromInt(scope()->start_position()))); |
| 2516 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2517 | // r0: the source position of the eval call. |
| 2518 | __ mov(r0, Operand(Smi::FromInt(expr->position()))); |
| 2519 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2520 | // Do the runtime call. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2521 | __ Push(r4, r3, r2, r1, r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2522 | __ CallRuntime(Runtime::kResolvePossiblyDirectEval); |
| 2523 | } |
| 2524 | |
| 2525 | |
| 2526 | // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
| 2527 | void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
| 2528 | VariableProxy* callee = expr->expression()->AsVariableProxy(); |
| 2529 | if (callee->var()->IsLookupSlot()) { |
| 2530 | Label slow, done; |
| 2531 | SetExpressionPosition(callee); |
| 2532 | // Generate code for loading from variables potentially shadowed |
| 2533 | // by eval-introduced variables. |
| 2534 | EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done); |
| 2535 | |
| 2536 | __ bind(&slow); |
| 2537 | // Call the runtime to find the function to call (returned in r0) |
| 2538 | // and the object holding it (returned in edx). |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2539 | __ Push(callee->name()); |
| 2540 | __ CallRuntime(Runtime::kLoadLookupSlotForCall); |
| 2541 | PushOperands(r0, r1); // Function, receiver. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2542 | PrepareForBailoutForId(expr->LookupId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2543 | |
| 2544 | // If fast case code has been generated, emit code to push the |
| 2545 | // function and receiver and have the slow path jump around this |
| 2546 | // code. |
| 2547 | if (done.is_linked()) { |
| 2548 | Label call; |
| 2549 | __ b(&call); |
| 2550 | __ bind(&done); |
| 2551 | // Push function. |
| 2552 | __ push(r0); |
| 2553 | // The receiver is implicitly the global receiver. Indicate this |
| 2554 | // by passing the hole to the call function stub. |
| 2555 | __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); |
| 2556 | __ push(r1); |
| 2557 | __ bind(&call); |
| 2558 | } |
| 2559 | } else { |
| 2560 | VisitForStackValue(callee); |
| 2561 | // refEnv.WithBaseObject() |
| 2562 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2563 | PushOperand(r2); // Reserved receiver slot. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2564 | } |
| 2565 | } |
| 2566 | |
| 2567 | |
| 2568 | void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { |
| 2569 | // In a call to eval, we first call |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2570 | // Runtime_ResolvePossiblyDirectEval to resolve the function we need |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2571 | // to call. Then we call the resolved function using the given arguments. |
| 2572 | ZoneList<Expression*>* args = expr->arguments(); |
| 2573 | int arg_count = args->length(); |
| 2574 | |
| 2575 | PushCalleeAndWithBaseObject(expr); |
| 2576 | |
| 2577 | // Push the arguments. |
| 2578 | for (int i = 0; i < arg_count; i++) { |
| 2579 | VisitForStackValue(args->at(i)); |
| 2580 | } |
| 2581 | |
| 2582 | // Push a copy of the function (found below the arguments) and |
| 2583 | // resolve eval. |
| 2584 | __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| 2585 | __ push(r1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2586 | EmitResolvePossiblyDirectEval(expr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2587 | |
| 2588 | // Touch up the stack with the resolved function. |
| 2589 | __ str(r0, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| 2590 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2591 | PrepareForBailoutForId(expr->EvalId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2592 | |
| 2593 | // Record source position for debugger. |
| 2594 | SetCallPosition(expr); |
| 2595 | __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| 2596 | __ mov(r0, Operand(arg_count)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2597 | __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
| 2598 | expr->tail_call_mode()), |
| 2599 | RelocInfo::CODE_TARGET); |
| 2600 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2601 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2602 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2603 | context()->DropAndPlug(1, r0); |
| 2604 | } |
| 2605 | |
| 2606 | |
| 2607 | void FullCodeGenerator::VisitCallNew(CallNew* expr) { |
| 2608 | Comment cmnt(masm_, "[ CallNew"); |
| 2609 | // According to ECMA-262, section 11.2.2, page 44, the function |
| 2610 | // expression in new calls must be evaluated before the |
| 2611 | // arguments. |
| 2612 | |
| 2613 | // Push constructor on the stack. If it's not a function it's used as |
| 2614 | // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is |
| 2615 | // ignored. |
| 2616 | DCHECK(!expr->expression()->IsSuperPropertyReference()); |
| 2617 | VisitForStackValue(expr->expression()); |
| 2618 | |
| 2619 | // Push the arguments ("left-to-right") on the stack. |
| 2620 | ZoneList<Expression*>* args = expr->arguments(); |
| 2621 | int arg_count = args->length(); |
| 2622 | for (int i = 0; i < arg_count; i++) { |
| 2623 | VisitForStackValue(args->at(i)); |
| 2624 | } |
| 2625 | |
| 2626 | // Call the construct call builtin that handles allocation and |
| 2627 | // constructor invocation. |
| 2628 | SetConstructCallPosition(expr); |
| 2629 | |
| 2630 | // Load function and argument count into r1 and r0. |
| 2631 | __ mov(r0, Operand(arg_count)); |
| 2632 | __ ldr(r1, MemOperand(sp, arg_count * kPointerSize)); |
| 2633 | |
| 2634 | // Record call targets in unoptimized code. |
| 2635 | __ EmitLoadTypeFeedbackVector(r2); |
| 2636 | __ mov(r3, Operand(SmiFromSlot(expr->CallNewFeedbackSlot()))); |
| 2637 | |
| 2638 | CallConstructStub stub(isolate()); |
| 2639 | __ Call(stub.GetCode(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2640 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2641 | PrepareForBailoutForId(expr->ReturnId(), BailoutState::TOS_REGISTER); |
| 2642 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2643 | context()->Plug(r0); |
| 2644 | } |
| 2645 | |
| 2646 | |
| 2647 | void FullCodeGenerator::EmitSuperConstructorCall(Call* expr) { |
| 2648 | SuperCallReference* super_call_ref = |
| 2649 | expr->expression()->AsSuperCallReference(); |
| 2650 | DCHECK_NOT_NULL(super_call_ref); |
| 2651 | |
| 2652 | // Push the super constructor target on the stack (may be null, |
| 2653 | // but the Construct builtin can deal with that properly). |
| 2654 | VisitForAccumulatorValue(super_call_ref->this_function_var()); |
| 2655 | __ AssertFunction(result_register()); |
| 2656 | __ ldr(result_register(), |
| 2657 | FieldMemOperand(result_register(), HeapObject::kMapOffset)); |
| 2658 | __ ldr(result_register(), |
| 2659 | FieldMemOperand(result_register(), Map::kPrototypeOffset)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2660 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2661 | |
| 2662 | // Push the arguments ("left-to-right") on the stack. |
| 2663 | ZoneList<Expression*>* args = expr->arguments(); |
| 2664 | int arg_count = args->length(); |
| 2665 | for (int i = 0; i < arg_count; i++) { |
| 2666 | VisitForStackValue(args->at(i)); |
| 2667 | } |
| 2668 | |
| 2669 | // Call the construct call builtin that handles allocation and |
| 2670 | // constructor invocation. |
| 2671 | SetConstructCallPosition(expr); |
| 2672 | |
| 2673 | // Load new target into r3. |
| 2674 | VisitForAccumulatorValue(super_call_ref->new_target_var()); |
| 2675 | __ mov(r3, result_register()); |
| 2676 | |
| 2677 | // Load function and argument count into r1 and r0. |
| 2678 | __ mov(r0, Operand(arg_count)); |
| 2679 | __ ldr(r1, MemOperand(sp, arg_count * kPointerSize)); |
| 2680 | |
| 2681 | __ Call(isolate()->builtins()->Construct(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2682 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2683 | |
| 2684 | RecordJSReturnSite(expr); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2685 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2686 | context()->Plug(r0); |
| 2687 | } |
| 2688 | |
| 2689 | |
| 2690 | void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) { |
| 2691 | ZoneList<Expression*>* args = expr->arguments(); |
| 2692 | DCHECK(args->length() == 1); |
| 2693 | |
| 2694 | VisitForAccumulatorValue(args->at(0)); |
| 2695 | |
| 2696 | Label materialize_true, materialize_false; |
| 2697 | Label* if_true = NULL; |
| 2698 | Label* if_false = NULL; |
| 2699 | Label* fall_through = NULL; |
| 2700 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2701 | &if_true, &if_false, &fall_through); |
| 2702 | |
| 2703 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2704 | __ SmiTst(r0); |
| 2705 | Split(eq, if_true, if_false, fall_through); |
| 2706 | |
| 2707 | context()->Plug(if_true, if_false); |
| 2708 | } |
| 2709 | |
| 2710 | |
| 2711 | void FullCodeGenerator::EmitIsJSReceiver(CallRuntime* expr) { |
| 2712 | ZoneList<Expression*>* args = expr->arguments(); |
| 2713 | DCHECK(args->length() == 1); |
| 2714 | |
| 2715 | VisitForAccumulatorValue(args->at(0)); |
| 2716 | |
| 2717 | Label materialize_true, materialize_false; |
| 2718 | Label* if_true = NULL; |
| 2719 | Label* if_false = NULL; |
| 2720 | Label* fall_through = NULL; |
| 2721 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2722 | &if_true, &if_false, &fall_through); |
| 2723 | |
| 2724 | __ JumpIfSmi(r0, if_false); |
| 2725 | __ CompareObjectType(r0, r1, r1, FIRST_JS_RECEIVER_TYPE); |
| 2726 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2727 | Split(ge, if_true, if_false, fall_through); |
| 2728 | |
| 2729 | context()->Plug(if_true, if_false); |
| 2730 | } |
| 2731 | |
| 2732 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2733 | void FullCodeGenerator::EmitIsArray(CallRuntime* expr) { |
| 2734 | ZoneList<Expression*>* args = expr->arguments(); |
| 2735 | DCHECK(args->length() == 1); |
| 2736 | |
| 2737 | VisitForAccumulatorValue(args->at(0)); |
| 2738 | |
| 2739 | Label materialize_true, materialize_false; |
| 2740 | Label* if_true = NULL; |
| 2741 | Label* if_false = NULL; |
| 2742 | Label* fall_through = NULL; |
| 2743 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2744 | &if_true, &if_false, &fall_through); |
| 2745 | |
| 2746 | __ JumpIfSmi(r0, if_false); |
| 2747 | __ CompareObjectType(r0, r1, r1, JS_ARRAY_TYPE); |
| 2748 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2749 | Split(eq, if_true, if_false, fall_through); |
| 2750 | |
| 2751 | context()->Plug(if_true, if_false); |
| 2752 | } |
| 2753 | |
| 2754 | |
| 2755 | void FullCodeGenerator::EmitIsTypedArray(CallRuntime* expr) { |
| 2756 | ZoneList<Expression*>* args = expr->arguments(); |
| 2757 | DCHECK(args->length() == 1); |
| 2758 | |
| 2759 | VisitForAccumulatorValue(args->at(0)); |
| 2760 | |
| 2761 | Label materialize_true, materialize_false; |
| 2762 | Label* if_true = NULL; |
| 2763 | Label* if_false = NULL; |
| 2764 | Label* fall_through = NULL; |
| 2765 | context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
| 2766 | &if_false, &fall_through); |
| 2767 | |
| 2768 | __ JumpIfSmi(r0, if_false); |
| 2769 | __ CompareObjectType(r0, r1, r1, JS_TYPED_ARRAY_TYPE); |
| 2770 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2771 | Split(eq, if_true, if_false, fall_through); |
| 2772 | |
| 2773 | context()->Plug(if_true, if_false); |
| 2774 | } |
| 2775 | |
| 2776 | |
| 2777 | void FullCodeGenerator::EmitIsRegExp(CallRuntime* expr) { |
| 2778 | ZoneList<Expression*>* args = expr->arguments(); |
| 2779 | DCHECK(args->length() == 1); |
| 2780 | |
| 2781 | VisitForAccumulatorValue(args->at(0)); |
| 2782 | |
| 2783 | Label materialize_true, materialize_false; |
| 2784 | Label* if_true = NULL; |
| 2785 | Label* if_false = NULL; |
| 2786 | Label* fall_through = NULL; |
| 2787 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2788 | &if_true, &if_false, &fall_through); |
| 2789 | |
| 2790 | __ JumpIfSmi(r0, if_false); |
| 2791 | __ CompareObjectType(r0, r1, r1, JS_REGEXP_TYPE); |
| 2792 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2793 | Split(eq, if_true, if_false, fall_through); |
| 2794 | |
| 2795 | context()->Plug(if_true, if_false); |
| 2796 | } |
| 2797 | |
| 2798 | |
| 2799 | void FullCodeGenerator::EmitIsJSProxy(CallRuntime* expr) { |
| 2800 | ZoneList<Expression*>* args = expr->arguments(); |
| 2801 | DCHECK(args->length() == 1); |
| 2802 | |
| 2803 | VisitForAccumulatorValue(args->at(0)); |
| 2804 | |
| 2805 | Label materialize_true, materialize_false; |
| 2806 | Label* if_true = NULL; |
| 2807 | Label* if_false = NULL; |
| 2808 | Label* fall_through = NULL; |
| 2809 | context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
| 2810 | &if_false, &fall_through); |
| 2811 | |
| 2812 | __ JumpIfSmi(r0, if_false); |
| 2813 | __ CompareObjectType(r0, r1, r1, JS_PROXY_TYPE); |
| 2814 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2815 | Split(eq, if_true, if_false, fall_through); |
| 2816 | |
| 2817 | context()->Plug(if_true, if_false); |
| 2818 | } |
| 2819 | |
| 2820 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2821 | void FullCodeGenerator::EmitClassOf(CallRuntime* expr) { |
| 2822 | ZoneList<Expression*>* args = expr->arguments(); |
| 2823 | DCHECK(args->length() == 1); |
| 2824 | Label done, null, function, non_function_constructor; |
| 2825 | |
| 2826 | VisitForAccumulatorValue(args->at(0)); |
| 2827 | |
| 2828 | // If the object is not a JSReceiver, we return null. |
| 2829 | __ JumpIfSmi(r0, &null); |
| 2830 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 2831 | __ CompareObjectType(r0, r0, r1, FIRST_JS_RECEIVER_TYPE); |
| 2832 | // Map is now in r0. |
| 2833 | __ b(lt, &null); |
| 2834 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2835 | // Return 'Function' for JSFunction and JSBoundFunction objects. |
| 2836 | __ cmp(r1, Operand(FIRST_FUNCTION_TYPE)); |
| 2837 | STATIC_ASSERT(LAST_FUNCTION_TYPE == LAST_TYPE); |
| 2838 | __ b(hs, &function); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2839 | |
| 2840 | // Check if the constructor in the map is a JS function. |
| 2841 | Register instance_type = r2; |
| 2842 | __ GetMapConstructor(r0, r0, r1, instance_type); |
| 2843 | __ cmp(instance_type, Operand(JS_FUNCTION_TYPE)); |
| 2844 | __ b(ne, &non_function_constructor); |
| 2845 | |
| 2846 | // r0 now contains the constructor function. Grab the |
| 2847 | // instance class name from there. |
| 2848 | __ ldr(r0, FieldMemOperand(r0, JSFunction::kSharedFunctionInfoOffset)); |
| 2849 | __ ldr(r0, FieldMemOperand(r0, SharedFunctionInfo::kInstanceClassNameOffset)); |
| 2850 | __ b(&done); |
| 2851 | |
| 2852 | // Functions have class 'Function'. |
| 2853 | __ bind(&function); |
| 2854 | __ LoadRoot(r0, Heap::kFunction_stringRootIndex); |
| 2855 | __ jmp(&done); |
| 2856 | |
| 2857 | // Objects with a non-function constructor have class 'Object'. |
| 2858 | __ bind(&non_function_constructor); |
| 2859 | __ LoadRoot(r0, Heap::kObject_stringRootIndex); |
| 2860 | __ jmp(&done); |
| 2861 | |
| 2862 | // Non-JS objects have class null. |
| 2863 | __ bind(&null); |
| 2864 | __ LoadRoot(r0, Heap::kNullValueRootIndex); |
| 2865 | |
| 2866 | // All done. |
| 2867 | __ bind(&done); |
| 2868 | |
| 2869 | context()->Plug(r0); |
| 2870 | } |
| 2871 | |
| 2872 | |
| 2873 | void FullCodeGenerator::EmitValueOf(CallRuntime* expr) { |
| 2874 | ZoneList<Expression*>* args = expr->arguments(); |
| 2875 | DCHECK(args->length() == 1); |
| 2876 | VisitForAccumulatorValue(args->at(0)); // Load the object. |
| 2877 | |
| 2878 | Label done; |
| 2879 | // If the object is a smi return the object. |
| 2880 | __ JumpIfSmi(r0, &done); |
| 2881 | // If the object is not a value type, return the object. |
| 2882 | __ CompareObjectType(r0, r1, r1, JS_VALUE_TYPE); |
| 2883 | __ ldr(r0, FieldMemOperand(r0, JSValue::kValueOffset), eq); |
| 2884 | |
| 2885 | __ bind(&done); |
| 2886 | context()->Plug(r0); |
| 2887 | } |
| 2888 | |
| 2889 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2890 | void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { |
| 2891 | ZoneList<Expression*>* args = expr->arguments(); |
| 2892 | DCHECK(args->length() == 1); |
| 2893 | VisitForAccumulatorValue(args->at(0)); |
| 2894 | |
| 2895 | Label done; |
| 2896 | StringCharFromCodeGenerator generator(r0, r1); |
| 2897 | generator.GenerateFast(masm_); |
| 2898 | __ jmp(&done); |
| 2899 | |
| 2900 | NopRuntimeCallHelper call_helper; |
| 2901 | generator.GenerateSlow(masm_, call_helper); |
| 2902 | |
| 2903 | __ bind(&done); |
| 2904 | context()->Plug(r1); |
| 2905 | } |
| 2906 | |
| 2907 | |
| 2908 | void FullCodeGenerator::EmitStringCharCodeAt(CallRuntime* expr) { |
| 2909 | ZoneList<Expression*>* args = expr->arguments(); |
| 2910 | DCHECK(args->length() == 2); |
| 2911 | VisitForStackValue(args->at(0)); |
| 2912 | VisitForAccumulatorValue(args->at(1)); |
| 2913 | |
| 2914 | Register object = r1; |
| 2915 | Register index = r0; |
| 2916 | Register result = r3; |
| 2917 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2918 | PopOperand(object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2919 | |
| 2920 | Label need_conversion; |
| 2921 | Label index_out_of_range; |
| 2922 | Label done; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2923 | StringCharCodeAtGenerator generator(object, index, result, &need_conversion, |
| 2924 | &need_conversion, &index_out_of_range); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2925 | generator.GenerateFast(masm_); |
| 2926 | __ jmp(&done); |
| 2927 | |
| 2928 | __ bind(&index_out_of_range); |
| 2929 | // When the index is out of range, the spec requires us to return |
| 2930 | // NaN. |
| 2931 | __ LoadRoot(result, Heap::kNanValueRootIndex); |
| 2932 | __ jmp(&done); |
| 2933 | |
| 2934 | __ bind(&need_conversion); |
| 2935 | // Load the undefined value into the result register, which will |
| 2936 | // trigger conversion. |
| 2937 | __ LoadRoot(result, Heap::kUndefinedValueRootIndex); |
| 2938 | __ jmp(&done); |
| 2939 | |
| 2940 | NopRuntimeCallHelper call_helper; |
| 2941 | generator.GenerateSlow(masm_, NOT_PART_OF_IC_HANDLER, call_helper); |
| 2942 | |
| 2943 | __ bind(&done); |
| 2944 | context()->Plug(result); |
| 2945 | } |
| 2946 | |
| 2947 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2948 | void FullCodeGenerator::EmitCall(CallRuntime* expr) { |
| 2949 | ZoneList<Expression*>* args = expr->arguments(); |
| 2950 | DCHECK_LE(2, args->length()); |
| 2951 | // Push target, receiver and arguments onto the stack. |
| 2952 | for (Expression* const arg : *args) { |
| 2953 | VisitForStackValue(arg); |
| 2954 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2955 | PrepareForBailoutForId(expr->CallId(), BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2956 | // Move target to r1. |
| 2957 | int const argc = args->length() - 2; |
| 2958 | __ ldr(r1, MemOperand(sp, (argc + 1) * kPointerSize)); |
| 2959 | // Call the target. |
| 2960 | __ mov(r0, Operand(argc)); |
| 2961 | __ Call(isolate()->builtins()->Call(), RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2962 | OperandStackDepthDecrement(argc + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2963 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2964 | // Discard the function left on TOS. |
| 2965 | context()->DropAndPlug(1, r0); |
| 2966 | } |
| 2967 | |
| 2968 | |
| 2969 | void FullCodeGenerator::EmitHasCachedArrayIndex(CallRuntime* expr) { |
| 2970 | ZoneList<Expression*>* args = expr->arguments(); |
| 2971 | VisitForAccumulatorValue(args->at(0)); |
| 2972 | |
| 2973 | Label materialize_true, materialize_false; |
| 2974 | Label* if_true = NULL; |
| 2975 | Label* if_false = NULL; |
| 2976 | Label* fall_through = NULL; |
| 2977 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 2978 | &if_true, &if_false, &fall_through); |
| 2979 | |
| 2980 | __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset)); |
| 2981 | __ tst(r0, Operand(String::kContainsCachedArrayIndexMask)); |
| 2982 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 2983 | Split(eq, if_true, if_false, fall_through); |
| 2984 | |
| 2985 | context()->Plug(if_true, if_false); |
| 2986 | } |
| 2987 | |
| 2988 | |
| 2989 | void FullCodeGenerator::EmitGetCachedArrayIndex(CallRuntime* expr) { |
| 2990 | ZoneList<Expression*>* args = expr->arguments(); |
| 2991 | DCHECK(args->length() == 1); |
| 2992 | VisitForAccumulatorValue(args->at(0)); |
| 2993 | |
| 2994 | __ AssertString(r0); |
| 2995 | |
| 2996 | __ ldr(r0, FieldMemOperand(r0, String::kHashFieldOffset)); |
| 2997 | __ IndexFromHash(r0, r0); |
| 2998 | |
| 2999 | context()->Plug(r0); |
| 3000 | } |
| 3001 | |
| 3002 | |
| 3003 | void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) { |
| 3004 | ZoneList<Expression*>* args = expr->arguments(); |
| 3005 | DCHECK_EQ(1, args->length()); |
| 3006 | VisitForAccumulatorValue(args->at(0)); |
| 3007 | __ AssertFunction(r0); |
| 3008 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3009 | __ ldr(r0, FieldMemOperand(r0, Map::kPrototypeOffset)); |
| 3010 | context()->Plug(r0); |
| 3011 | } |
| 3012 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3013 | void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) { |
| 3014 | DCHECK(expr->arguments()->length() == 0); |
| 3015 | ExternalReference debug_is_active = |
| 3016 | ExternalReference::debug_is_active_address(isolate()); |
| 3017 | __ mov(ip, Operand(debug_is_active)); |
| 3018 | __ ldrb(r0, MemOperand(ip)); |
| 3019 | __ SmiTag(r0); |
| 3020 | context()->Plug(r0); |
| 3021 | } |
| 3022 | |
| 3023 | |
| 3024 | void FullCodeGenerator::EmitCreateIterResultObject(CallRuntime* expr) { |
| 3025 | ZoneList<Expression*>* args = expr->arguments(); |
| 3026 | DCHECK_EQ(2, args->length()); |
| 3027 | VisitForStackValue(args->at(0)); |
| 3028 | VisitForStackValue(args->at(1)); |
| 3029 | |
| 3030 | Label runtime, done; |
| 3031 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3032 | __ Allocate(JSIteratorResult::kSize, r0, r2, r3, &runtime, |
| 3033 | NO_ALLOCATION_FLAGS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3034 | __ LoadNativeContextSlot(Context::ITERATOR_RESULT_MAP_INDEX, r1); |
| 3035 | __ pop(r3); |
| 3036 | __ pop(r2); |
| 3037 | __ LoadRoot(r4, Heap::kEmptyFixedArrayRootIndex); |
| 3038 | __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3039 | __ str(r4, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 3040 | __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 3041 | __ str(r2, FieldMemOperand(r0, JSIteratorResult::kValueOffset)); |
| 3042 | __ str(r3, FieldMemOperand(r0, JSIteratorResult::kDoneOffset)); |
| 3043 | STATIC_ASSERT(JSIteratorResult::kSize == 5 * kPointerSize); |
| 3044 | __ b(&done); |
| 3045 | |
| 3046 | __ bind(&runtime); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3047 | CallRuntimeWithOperands(Runtime::kCreateIterResultObject); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3048 | |
| 3049 | __ bind(&done); |
| 3050 | context()->Plug(r0); |
| 3051 | } |
| 3052 | |
| 3053 | |
| 3054 | void FullCodeGenerator::EmitLoadJSRuntimeFunction(CallRuntime* expr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3055 | // Push function. |
| 3056 | __ LoadNativeContextSlot(expr->context_index(), r0); |
| 3057 | PushOperand(r0); |
| 3058 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3059 | // Push undefined as the receiver. |
| 3060 | __ LoadRoot(r0, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3061 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3062 | } |
| 3063 | |
| 3064 | |
| 3065 | void FullCodeGenerator::EmitCallJSRuntimeFunction(CallRuntime* expr) { |
| 3066 | ZoneList<Expression*>* args = expr->arguments(); |
| 3067 | int arg_count = args->length(); |
| 3068 | |
| 3069 | SetCallPosition(expr); |
| 3070 | __ ldr(r1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
| 3071 | __ mov(r0, Operand(arg_count)); |
| 3072 | __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kNullOrUndefined), |
| 3073 | RelocInfo::CODE_TARGET); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3074 | OperandStackDepthDecrement(arg_count + 1); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3075 | RestoreContext(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3076 | } |
| 3077 | |
| 3078 | |
| 3079 | void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
| 3080 | switch (expr->op()) { |
| 3081 | case Token::DELETE: { |
| 3082 | Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); |
| 3083 | Property* property = expr->expression()->AsProperty(); |
| 3084 | VariableProxy* proxy = expr->expression()->AsVariableProxy(); |
| 3085 | |
| 3086 | if (property != NULL) { |
| 3087 | VisitForStackValue(property->obj()); |
| 3088 | VisitForStackValue(property->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3089 | CallRuntimeWithOperands(is_strict(language_mode()) |
| 3090 | ? Runtime::kDeleteProperty_Strict |
| 3091 | : Runtime::kDeleteProperty_Sloppy); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3092 | context()->Plug(r0); |
| 3093 | } else if (proxy != NULL) { |
| 3094 | Variable* var = proxy->var(); |
| 3095 | // Delete of an unqualified identifier is disallowed in strict mode but |
| 3096 | // "delete this" is allowed. |
| 3097 | bool is_this = var->HasThisName(isolate()); |
| 3098 | DCHECK(is_sloppy(language_mode()) || is_this); |
| 3099 | if (var->IsUnallocatedOrGlobalSlot()) { |
| 3100 | __ LoadGlobalObject(r2); |
| 3101 | __ mov(r1, Operand(var->name())); |
| 3102 | __ Push(r2, r1); |
| 3103 | __ CallRuntime(Runtime::kDeleteProperty_Sloppy); |
| 3104 | context()->Plug(r0); |
| 3105 | } else if (var->IsStackAllocated() || var->IsContextSlot()) { |
| 3106 | // Result of deleting non-global, non-dynamic variables is false. |
| 3107 | // The subexpression does not have side effects. |
| 3108 | context()->Plug(is_this); |
| 3109 | } else { |
| 3110 | // Non-global variable. Call the runtime to try to delete from the |
| 3111 | // context where the variable was introduced. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3112 | __ Push(var->name()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3113 | __ CallRuntime(Runtime::kDeleteLookupSlot); |
| 3114 | context()->Plug(r0); |
| 3115 | } |
| 3116 | } else { |
| 3117 | // Result of deleting non-property, non-variable reference is true. |
| 3118 | // The subexpression may have side effects. |
| 3119 | VisitForEffect(expr->expression()); |
| 3120 | context()->Plug(true); |
| 3121 | } |
| 3122 | break; |
| 3123 | } |
| 3124 | |
| 3125 | case Token::VOID: { |
| 3126 | Comment cmnt(masm_, "[ UnaryOperation (VOID)"); |
| 3127 | VisitForEffect(expr->expression()); |
| 3128 | context()->Plug(Heap::kUndefinedValueRootIndex); |
| 3129 | break; |
| 3130 | } |
| 3131 | |
| 3132 | case Token::NOT: { |
| 3133 | Comment cmnt(masm_, "[ UnaryOperation (NOT)"); |
| 3134 | if (context()->IsEffect()) { |
| 3135 | // Unary NOT has no side effects so it's only necessary to visit the |
| 3136 | // subexpression. Match the optimizing compiler by not branching. |
| 3137 | VisitForEffect(expr->expression()); |
| 3138 | } else if (context()->IsTest()) { |
| 3139 | const TestContext* test = TestContext::cast(context()); |
| 3140 | // The labels are swapped for the recursive call. |
| 3141 | VisitForControl(expr->expression(), |
| 3142 | test->false_label(), |
| 3143 | test->true_label(), |
| 3144 | test->fall_through()); |
| 3145 | context()->Plug(test->true_label(), test->false_label()); |
| 3146 | } else { |
| 3147 | // We handle value contexts explicitly rather than simply visiting |
| 3148 | // for control and plugging the control flow into the context, |
| 3149 | // because we need to prepare a pair of extra administrative AST ids |
| 3150 | // for the optimizing compiler. |
| 3151 | DCHECK(context()->IsAccumulatorValue() || context()->IsStackValue()); |
| 3152 | Label materialize_true, materialize_false, done; |
| 3153 | VisitForControl(expr->expression(), |
| 3154 | &materialize_false, |
| 3155 | &materialize_true, |
| 3156 | &materialize_true); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3157 | if (!context()->IsAccumulatorValue()) OperandStackDepthIncrement(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3158 | __ bind(&materialize_true); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3159 | PrepareForBailoutForId(expr->MaterializeTrueId(), |
| 3160 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3161 | __ LoadRoot(r0, Heap::kTrueValueRootIndex); |
| 3162 | if (context()->IsStackValue()) __ push(r0); |
| 3163 | __ jmp(&done); |
| 3164 | __ bind(&materialize_false); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3165 | PrepareForBailoutForId(expr->MaterializeFalseId(), |
| 3166 | BailoutState::NO_REGISTERS); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3167 | __ LoadRoot(r0, Heap::kFalseValueRootIndex); |
| 3168 | if (context()->IsStackValue()) __ push(r0); |
| 3169 | __ bind(&done); |
| 3170 | } |
| 3171 | break; |
| 3172 | } |
| 3173 | |
| 3174 | case Token::TYPEOF: { |
| 3175 | Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
| 3176 | { |
| 3177 | AccumulatorValueContext context(this); |
| 3178 | VisitForTypeofValue(expr->expression()); |
| 3179 | } |
| 3180 | __ mov(r3, r0); |
| 3181 | TypeofStub typeof_stub(isolate()); |
| 3182 | __ CallStub(&typeof_stub); |
| 3183 | context()->Plug(r0); |
| 3184 | break; |
| 3185 | } |
| 3186 | |
| 3187 | default: |
| 3188 | UNREACHABLE(); |
| 3189 | } |
| 3190 | } |
| 3191 | |
| 3192 | |
| 3193 | void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { |
| 3194 | DCHECK(expr->expression()->IsValidReferenceExpressionOrThis()); |
| 3195 | |
| 3196 | Comment cmnt(masm_, "[ CountOperation"); |
| 3197 | |
| 3198 | Property* prop = expr->expression()->AsProperty(); |
| 3199 | LhsKind assign_type = Property::GetAssignType(prop); |
| 3200 | |
| 3201 | // Evaluate expression and get value. |
| 3202 | if (assign_type == VARIABLE) { |
| 3203 | DCHECK(expr->expression()->AsVariableProxy()->var() != NULL); |
| 3204 | AccumulatorValueContext context(this); |
| 3205 | EmitVariableLoad(expr->expression()->AsVariableProxy()); |
| 3206 | } else { |
| 3207 | // Reserve space for result of postfix operation. |
| 3208 | if (expr->is_postfix() && !context()->IsEffect()) { |
| 3209 | __ mov(ip, Operand(Smi::FromInt(0))); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3210 | PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3211 | } |
| 3212 | switch (assign_type) { |
| 3213 | case NAMED_PROPERTY: { |
| 3214 | // Put the object both on the stack and in the register. |
| 3215 | VisitForStackValue(prop->obj()); |
| 3216 | __ ldr(LoadDescriptor::ReceiverRegister(), MemOperand(sp, 0)); |
| 3217 | EmitNamedPropertyLoad(prop); |
| 3218 | break; |
| 3219 | } |
| 3220 | |
| 3221 | case NAMED_SUPER_PROPERTY: { |
| 3222 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 3223 | VisitForAccumulatorValue( |
| 3224 | prop->obj()->AsSuperPropertyReference()->home_object()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3225 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3226 | const Register scratch = r1; |
| 3227 | __ ldr(scratch, MemOperand(sp, kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3228 | PushOperand(scratch); |
| 3229 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3230 | EmitNamedSuperPropertyLoad(prop); |
| 3231 | break; |
| 3232 | } |
| 3233 | |
| 3234 | case KEYED_SUPER_PROPERTY: { |
| 3235 | VisitForStackValue(prop->obj()->AsSuperPropertyReference()->this_var()); |
| 3236 | VisitForStackValue( |
| 3237 | prop->obj()->AsSuperPropertyReference()->home_object()); |
| 3238 | VisitForAccumulatorValue(prop->key()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3239 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3240 | const Register scratch = r1; |
| 3241 | __ ldr(scratch, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3242 | PushOperand(scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3243 | __ ldr(scratch, MemOperand(sp, 2 * kPointerSize)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3244 | PushOperand(scratch); |
| 3245 | PushOperand(result_register()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3246 | EmitKeyedSuperPropertyLoad(prop); |
| 3247 | break; |
| 3248 | } |
| 3249 | |
| 3250 | case KEYED_PROPERTY: { |
| 3251 | VisitForStackValue(prop->obj()); |
| 3252 | VisitForStackValue(prop->key()); |
| 3253 | __ ldr(LoadDescriptor::ReceiverRegister(), |
| 3254 | MemOperand(sp, 1 * kPointerSize)); |
| 3255 | __ ldr(LoadDescriptor::NameRegister(), MemOperand(sp, 0)); |
| 3256 | EmitKeyedPropertyLoad(prop); |
| 3257 | break; |
| 3258 | } |
| 3259 | |
| 3260 | case VARIABLE: |
| 3261 | UNREACHABLE(); |
| 3262 | } |
| 3263 | } |
| 3264 | |
| 3265 | // We need a second deoptimization point after loading the value |
| 3266 | // in case evaluating the property load my have a side effect. |
| 3267 | if (assign_type == VARIABLE) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3268 | PrepareForBailout(expr->expression(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3269 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3270 | PrepareForBailoutForId(prop->LoadId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3271 | } |
| 3272 | |
| 3273 | // Inline smi case if we are in a loop. |
| 3274 | Label stub_call, done; |
| 3275 | JumpPatchSite patch_site(masm_); |
| 3276 | |
| 3277 | int count_value = expr->op() == Token::INC ? 1 : -1; |
| 3278 | if (ShouldInlineSmiCase(expr->op())) { |
| 3279 | Label slow; |
| 3280 | patch_site.EmitJumpIfNotSmi(r0, &slow); |
| 3281 | |
| 3282 | // Save result for postfix expressions. |
| 3283 | if (expr->is_postfix()) { |
| 3284 | if (!context()->IsEffect()) { |
| 3285 | // Save the result on the stack. If we have a named or keyed property |
| 3286 | // we store the result under the receiver that is currently on top |
| 3287 | // of the stack. |
| 3288 | switch (assign_type) { |
| 3289 | case VARIABLE: |
| 3290 | __ push(r0); |
| 3291 | break; |
| 3292 | case NAMED_PROPERTY: |
| 3293 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 3294 | break; |
| 3295 | case NAMED_SUPER_PROPERTY: |
| 3296 | __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
| 3297 | break; |
| 3298 | case KEYED_PROPERTY: |
| 3299 | __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
| 3300 | break; |
| 3301 | case KEYED_SUPER_PROPERTY: |
| 3302 | __ str(r0, MemOperand(sp, 3 * kPointerSize)); |
| 3303 | break; |
| 3304 | } |
| 3305 | } |
| 3306 | } |
| 3307 | |
| 3308 | __ add(r0, r0, Operand(Smi::FromInt(count_value)), SetCC); |
| 3309 | __ b(vc, &done); |
| 3310 | // Call stub. Undo operation first. |
| 3311 | __ sub(r0, r0, Operand(Smi::FromInt(count_value))); |
| 3312 | __ jmp(&stub_call); |
| 3313 | __ bind(&slow); |
| 3314 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3315 | |
| 3316 | // Convert old value into a number. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 3317 | __ Call(isolate()->builtins()->ToNumber(), RelocInfo::CODE_TARGET); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3318 | PrepareForBailoutForId(expr->ToNumberId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3319 | |
| 3320 | // Save result for postfix expressions. |
| 3321 | if (expr->is_postfix()) { |
| 3322 | if (!context()->IsEffect()) { |
| 3323 | // Save the result on the stack. If we have a named or keyed property |
| 3324 | // we store the result under the receiver that is currently on top |
| 3325 | // of the stack. |
| 3326 | switch (assign_type) { |
| 3327 | case VARIABLE: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3328 | PushOperand(r0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3329 | break; |
| 3330 | case NAMED_PROPERTY: |
| 3331 | __ str(r0, MemOperand(sp, kPointerSize)); |
| 3332 | break; |
| 3333 | case NAMED_SUPER_PROPERTY: |
| 3334 | __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
| 3335 | break; |
| 3336 | case KEYED_PROPERTY: |
| 3337 | __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
| 3338 | break; |
| 3339 | case KEYED_SUPER_PROPERTY: |
| 3340 | __ str(r0, MemOperand(sp, 3 * kPointerSize)); |
| 3341 | break; |
| 3342 | } |
| 3343 | } |
| 3344 | } |
| 3345 | |
| 3346 | |
| 3347 | __ bind(&stub_call); |
| 3348 | __ mov(r1, r0); |
| 3349 | __ mov(r0, Operand(Smi::FromInt(count_value))); |
| 3350 | |
| 3351 | SetExpressionPosition(expr); |
| 3352 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3353 | Handle<Code> code = CodeFactory::BinaryOpIC(isolate(), Token::ADD).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3354 | CallIC(code, expr->CountBinOpFeedbackId()); |
| 3355 | patch_site.EmitPatchInfo(); |
| 3356 | __ bind(&done); |
| 3357 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3358 | // Store the value returned in r0. |
| 3359 | switch (assign_type) { |
| 3360 | case VARIABLE: |
| 3361 | if (expr->is_postfix()) { |
| 3362 | { EffectContext context(this); |
| 3363 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 3364 | Token::ASSIGN, expr->CountSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3365 | PrepareForBailoutForId(expr->AssignmentId(), |
| 3366 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3367 | context.Plug(r0); |
| 3368 | } |
| 3369 | // For all contexts except EffectConstant We have the result on |
| 3370 | // top of the stack. |
| 3371 | if (!context()->IsEffect()) { |
| 3372 | context()->PlugTOS(); |
| 3373 | } |
| 3374 | } else { |
| 3375 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 3376 | Token::ASSIGN, expr->CountSlot()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3377 | PrepareForBailoutForId(expr->AssignmentId(), |
| 3378 | BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3379 | context()->Plug(r0); |
| 3380 | } |
| 3381 | break; |
| 3382 | case NAMED_PROPERTY: { |
| 3383 | __ mov(StoreDescriptor::NameRegister(), |
| 3384 | Operand(prop->key()->AsLiteral()->value())); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3385 | PopOperand(StoreDescriptor::ReceiverRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3386 | EmitLoadStoreICSlot(expr->CountSlot()); |
| 3387 | CallStoreIC(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3388 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3389 | if (expr->is_postfix()) { |
| 3390 | if (!context()->IsEffect()) { |
| 3391 | context()->PlugTOS(); |
| 3392 | } |
| 3393 | } else { |
| 3394 | context()->Plug(r0); |
| 3395 | } |
| 3396 | break; |
| 3397 | } |
| 3398 | case NAMED_SUPER_PROPERTY: { |
| 3399 | EmitNamedSuperPropertyStore(prop); |
| 3400 | if (expr->is_postfix()) { |
| 3401 | if (!context()->IsEffect()) { |
| 3402 | context()->PlugTOS(); |
| 3403 | } |
| 3404 | } else { |
| 3405 | context()->Plug(r0); |
| 3406 | } |
| 3407 | break; |
| 3408 | } |
| 3409 | case KEYED_SUPER_PROPERTY: { |
| 3410 | EmitKeyedSuperPropertyStore(prop); |
| 3411 | if (expr->is_postfix()) { |
| 3412 | if (!context()->IsEffect()) { |
| 3413 | context()->PlugTOS(); |
| 3414 | } |
| 3415 | } else { |
| 3416 | context()->Plug(r0); |
| 3417 | } |
| 3418 | break; |
| 3419 | } |
| 3420 | case KEYED_PROPERTY: { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3421 | PopOperands(StoreDescriptor::ReceiverRegister(), |
| 3422 | StoreDescriptor::NameRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3423 | Handle<Code> ic = |
| 3424 | CodeFactory::KeyedStoreIC(isolate(), language_mode()).code(); |
| 3425 | EmitLoadStoreICSlot(expr->CountSlot()); |
| 3426 | CallIC(ic); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3427 | PrepareForBailoutForId(expr->AssignmentId(), BailoutState::TOS_REGISTER); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3428 | if (expr->is_postfix()) { |
| 3429 | if (!context()->IsEffect()) { |
| 3430 | context()->PlugTOS(); |
| 3431 | } |
| 3432 | } else { |
| 3433 | context()->Plug(r0); |
| 3434 | } |
| 3435 | break; |
| 3436 | } |
| 3437 | } |
| 3438 | } |
| 3439 | |
| 3440 | |
| 3441 | void FullCodeGenerator::EmitLiteralCompareTypeof(Expression* expr, |
| 3442 | Expression* sub_expr, |
| 3443 | Handle<String> check) { |
| 3444 | Label materialize_true, materialize_false; |
| 3445 | Label* if_true = NULL; |
| 3446 | Label* if_false = NULL; |
| 3447 | Label* fall_through = NULL; |
| 3448 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3449 | &if_true, &if_false, &fall_through); |
| 3450 | |
| 3451 | { AccumulatorValueContext context(this); |
| 3452 | VisitForTypeofValue(sub_expr); |
| 3453 | } |
| 3454 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3455 | |
| 3456 | Factory* factory = isolate()->factory(); |
| 3457 | if (String::Equals(check, factory->number_string())) { |
| 3458 | __ JumpIfSmi(r0, if_true); |
| 3459 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3460 | __ LoadRoot(ip, Heap::kHeapNumberMapRootIndex); |
| 3461 | __ cmp(r0, ip); |
| 3462 | Split(eq, if_true, if_false, fall_through); |
| 3463 | } else if (String::Equals(check, factory->string_string())) { |
| 3464 | __ JumpIfSmi(r0, if_false); |
| 3465 | __ CompareObjectType(r0, r0, r1, FIRST_NONSTRING_TYPE); |
| 3466 | Split(lt, if_true, if_false, fall_through); |
| 3467 | } else if (String::Equals(check, factory->symbol_string())) { |
| 3468 | __ JumpIfSmi(r0, if_false); |
| 3469 | __ CompareObjectType(r0, r0, r1, SYMBOL_TYPE); |
| 3470 | Split(eq, if_true, if_false, fall_through); |
| 3471 | } else if (String::Equals(check, factory->boolean_string())) { |
| 3472 | __ CompareRoot(r0, Heap::kTrueValueRootIndex); |
| 3473 | __ b(eq, if_true); |
| 3474 | __ CompareRoot(r0, Heap::kFalseValueRootIndex); |
| 3475 | Split(eq, if_true, if_false, fall_through); |
| 3476 | } else if (String::Equals(check, factory->undefined_string())) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3477 | __ CompareRoot(r0, Heap::kNullValueRootIndex); |
| 3478 | __ b(eq, if_false); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3479 | __ JumpIfSmi(r0, if_false); |
| 3480 | // Check for undetectable objects => true. |
| 3481 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3482 | __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset)); |
| 3483 | __ tst(r1, Operand(1 << Map::kIsUndetectable)); |
| 3484 | Split(ne, if_true, if_false, fall_through); |
| 3485 | |
| 3486 | } else if (String::Equals(check, factory->function_string())) { |
| 3487 | __ JumpIfSmi(r0, if_false); |
| 3488 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3489 | __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset)); |
| 3490 | __ and_(r1, r1, |
| 3491 | Operand((1 << Map::kIsCallable) | (1 << Map::kIsUndetectable))); |
| 3492 | __ cmp(r1, Operand(1 << Map::kIsCallable)); |
| 3493 | Split(eq, if_true, if_false, fall_through); |
| 3494 | } else if (String::Equals(check, factory->object_string())) { |
| 3495 | __ JumpIfSmi(r0, if_false); |
| 3496 | __ CompareRoot(r0, Heap::kNullValueRootIndex); |
| 3497 | __ b(eq, if_true); |
| 3498 | STATIC_ASSERT(LAST_JS_RECEIVER_TYPE == LAST_TYPE); |
| 3499 | __ CompareObjectType(r0, r0, r1, FIRST_JS_RECEIVER_TYPE); |
| 3500 | __ b(lt, if_false); |
| 3501 | // Check for callable or undetectable objects => false. |
| 3502 | __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset)); |
| 3503 | __ tst(r1, Operand((1 << Map::kIsCallable) | (1 << Map::kIsUndetectable))); |
| 3504 | Split(eq, if_true, if_false, fall_through); |
| 3505 | // clang-format off |
| 3506 | #define SIMD128_TYPE(TYPE, Type, type, lane_count, lane_type) \ |
| 3507 | } else if (String::Equals(check, factory->type##_string())) { \ |
| 3508 | __ JumpIfSmi(r0, if_false); \ |
| 3509 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); \ |
| 3510 | __ CompareRoot(r0, Heap::k##Type##MapRootIndex); \ |
| 3511 | Split(eq, if_true, if_false, fall_through); |
| 3512 | SIMD128_TYPES(SIMD128_TYPE) |
| 3513 | #undef SIMD128_TYPE |
| 3514 | // clang-format on |
| 3515 | } else { |
| 3516 | if (if_false != fall_through) __ jmp(if_false); |
| 3517 | } |
| 3518 | context()->Plug(if_true, if_false); |
| 3519 | } |
| 3520 | |
| 3521 | |
| 3522 | void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { |
| 3523 | Comment cmnt(masm_, "[ CompareOperation"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3524 | |
| 3525 | // First we try a fast inlined version of the compare when one of |
| 3526 | // the operands is a literal. |
| 3527 | if (TryLiteralCompare(expr)) return; |
| 3528 | |
| 3529 | // Always perform the comparison for its control flow. Pack the result |
| 3530 | // into the expression's context after the comparison is performed. |
| 3531 | Label materialize_true, materialize_false; |
| 3532 | Label* if_true = NULL; |
| 3533 | Label* if_false = NULL; |
| 3534 | Label* fall_through = NULL; |
| 3535 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3536 | &if_true, &if_false, &fall_through); |
| 3537 | |
| 3538 | Token::Value op = expr->op(); |
| 3539 | VisitForStackValue(expr->left()); |
| 3540 | switch (op) { |
| 3541 | case Token::IN: |
| 3542 | VisitForStackValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3543 | SetExpressionPosition(expr); |
| 3544 | EmitHasProperty(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3545 | PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| 3546 | __ CompareRoot(r0, Heap::kTrueValueRootIndex); |
| 3547 | Split(eq, if_true, if_false, fall_through); |
| 3548 | break; |
| 3549 | |
| 3550 | case Token::INSTANCEOF: { |
| 3551 | VisitForAccumulatorValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3552 | SetExpressionPosition(expr); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3553 | PopOperand(r1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3554 | InstanceOfStub stub(isolate()); |
| 3555 | __ CallStub(&stub); |
| 3556 | PrepareForBailoutBeforeSplit(expr, false, NULL, NULL); |
| 3557 | __ CompareRoot(r0, Heap::kTrueValueRootIndex); |
| 3558 | Split(eq, if_true, if_false, fall_through); |
| 3559 | break; |
| 3560 | } |
| 3561 | |
| 3562 | default: { |
| 3563 | VisitForAccumulatorValue(expr->right()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 3564 | SetExpressionPosition(expr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3565 | Condition cond = CompareIC::ComputeCondition(op); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3566 | PopOperand(r1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3567 | |
| 3568 | bool inline_smi_code = ShouldInlineSmiCase(op); |
| 3569 | JumpPatchSite patch_site(masm_); |
| 3570 | if (inline_smi_code) { |
| 3571 | Label slow_case; |
| 3572 | __ orr(r2, r0, Operand(r1)); |
| 3573 | patch_site.EmitJumpIfNotSmi(r2, &slow_case); |
| 3574 | __ cmp(r1, r0); |
| 3575 | Split(cond, if_true, if_false, NULL); |
| 3576 | __ bind(&slow_case); |
| 3577 | } |
| 3578 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3579 | Handle<Code> ic = CodeFactory::CompareIC(isolate(), op).code(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3580 | CallIC(ic, expr->CompareOperationFeedbackId()); |
| 3581 | patch_site.EmitPatchInfo(); |
| 3582 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3583 | __ cmp(r0, Operand::Zero()); |
| 3584 | Split(cond, if_true, if_false, fall_through); |
| 3585 | } |
| 3586 | } |
| 3587 | |
| 3588 | // Convert the result of the comparison into one expected for this |
| 3589 | // expression's context. |
| 3590 | context()->Plug(if_true, if_false); |
| 3591 | } |
| 3592 | |
| 3593 | |
| 3594 | void FullCodeGenerator::EmitLiteralCompareNil(CompareOperation* expr, |
| 3595 | Expression* sub_expr, |
| 3596 | NilValue nil) { |
| 3597 | Label materialize_true, materialize_false; |
| 3598 | Label* if_true = NULL; |
| 3599 | Label* if_false = NULL; |
| 3600 | Label* fall_through = NULL; |
| 3601 | context()->PrepareTest(&materialize_true, &materialize_false, |
| 3602 | &if_true, &if_false, &fall_through); |
| 3603 | |
| 3604 | VisitForAccumulatorValue(sub_expr); |
| 3605 | PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
| 3606 | if (expr->op() == Token::EQ_STRICT) { |
| 3607 | Heap::RootListIndex nil_value = nil == kNullValue ? |
| 3608 | Heap::kNullValueRootIndex : |
| 3609 | Heap::kUndefinedValueRootIndex; |
| 3610 | __ LoadRoot(r1, nil_value); |
| 3611 | __ cmp(r0, r1); |
| 3612 | Split(eq, if_true, if_false, fall_through); |
| 3613 | } else { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3614 | __ JumpIfSmi(r0, if_false); |
| 3615 | __ ldr(r0, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 3616 | __ ldrb(r1, FieldMemOperand(r0, Map::kBitFieldOffset)); |
| 3617 | __ tst(r1, Operand(1 << Map::kIsUndetectable)); |
| 3618 | Split(ne, if_true, if_false, fall_through); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3619 | } |
| 3620 | context()->Plug(if_true, if_false); |
| 3621 | } |
| 3622 | |
| 3623 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3624 | Register FullCodeGenerator::result_register() { |
| 3625 | return r0; |
| 3626 | } |
| 3627 | |
| 3628 | |
| 3629 | Register FullCodeGenerator::context_register() { |
| 3630 | return cp; |
| 3631 | } |
| 3632 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3633 | void FullCodeGenerator::LoadFromFrameField(int frame_offset, Register value) { |
| 3634 | DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 3635 | __ ldr(value, MemOperand(fp, frame_offset)); |
| 3636 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3637 | |
| 3638 | void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
| 3639 | DCHECK_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 3640 | __ str(value, MemOperand(fp, frame_offset)); |
| 3641 | } |
| 3642 | |
| 3643 | |
| 3644 | void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| 3645 | __ ldr(dst, ContextMemOperand(cp, context_index)); |
| 3646 | } |
| 3647 | |
| 3648 | |
| 3649 | void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
| 3650 | Scope* closure_scope = scope()->ClosureScope(); |
| 3651 | if (closure_scope->is_script_scope() || |
| 3652 | closure_scope->is_module_scope()) { |
| 3653 | // Contexts nested in the native context have a canonical empty function |
| 3654 | // as their closure, not the anonymous closure containing the global |
| 3655 | // code. |
| 3656 | __ LoadNativeContextSlot(Context::CLOSURE_INDEX, ip); |
| 3657 | } else if (closure_scope->is_eval_scope()) { |
| 3658 | // Contexts created by a call to eval have the same closure as the |
| 3659 | // context calling eval, not the anonymous closure containing the eval |
| 3660 | // code. Fetch it from the context. |
| 3661 | __ ldr(ip, ContextMemOperand(cp, Context::CLOSURE_INDEX)); |
| 3662 | } else { |
| 3663 | DCHECK(closure_scope->is_function_scope()); |
| 3664 | __ ldr(ip, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 3665 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3666 | PushOperand(ip); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3667 | } |
| 3668 | |
| 3669 | |
| 3670 | // ---------------------------------------------------------------------------- |
| 3671 | // Non-local control flow support. |
| 3672 | |
| 3673 | void FullCodeGenerator::EnterFinallyBlock() { |
| 3674 | DCHECK(!result_register().is(r1)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3675 | // Store pending message while executing finally block. |
| 3676 | ExternalReference pending_message_obj = |
| 3677 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3678 | __ mov(ip, Operand(pending_message_obj)); |
| 3679 | __ ldr(r1, MemOperand(ip)); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3680 | PushOperand(r1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3681 | |
| 3682 | ClearPendingMessage(); |
| 3683 | } |
| 3684 | |
| 3685 | |
| 3686 | void FullCodeGenerator::ExitFinallyBlock() { |
| 3687 | DCHECK(!result_register().is(r1)); |
| 3688 | // Restore pending message from stack. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3689 | PopOperand(r1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3690 | ExternalReference pending_message_obj = |
| 3691 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3692 | __ mov(ip, Operand(pending_message_obj)); |
| 3693 | __ str(r1, MemOperand(ip)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3694 | } |
| 3695 | |
| 3696 | |
| 3697 | void FullCodeGenerator::ClearPendingMessage() { |
| 3698 | DCHECK(!result_register().is(r1)); |
| 3699 | ExternalReference pending_message_obj = |
| 3700 | ExternalReference::address_of_pending_message_obj(isolate()); |
| 3701 | __ LoadRoot(r1, Heap::kTheHoleValueRootIndex); |
| 3702 | __ mov(ip, Operand(pending_message_obj)); |
| 3703 | __ str(r1, MemOperand(ip)); |
| 3704 | } |
| 3705 | |
| 3706 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3707 | void FullCodeGenerator::DeferredCommands::EmitCommands() { |
| 3708 | DCHECK(!result_register().is(r1)); |
| 3709 | __ Pop(result_register()); // Restore the accumulator. |
| 3710 | __ Pop(r1); // Get the token. |
| 3711 | for (DeferredCommand cmd : commands_) { |
| 3712 | Label skip; |
| 3713 | __ cmp(r1, Operand(Smi::FromInt(cmd.token))); |
| 3714 | __ b(ne, &skip); |
| 3715 | switch (cmd.command) { |
| 3716 | case kReturn: |
| 3717 | codegen_->EmitUnwindAndReturn(); |
| 3718 | break; |
| 3719 | case kThrow: |
| 3720 | __ Push(result_register()); |
| 3721 | __ CallRuntime(Runtime::kReThrow); |
| 3722 | break; |
| 3723 | case kContinue: |
| 3724 | codegen_->EmitContinue(cmd.target); |
| 3725 | break; |
| 3726 | case kBreak: |
| 3727 | codegen_->EmitBreak(cmd.target); |
| 3728 | break; |
| 3729 | } |
| 3730 | __ bind(&skip); |
| 3731 | } |
| 3732 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3733 | |
| 3734 | #undef __ |
| 3735 | |
| 3736 | |
| 3737 | static Address GetInterruptImmediateLoadAddress(Address pc) { |
| 3738 | Address load_address = pc - 2 * Assembler::kInstrSize; |
| 3739 | if (!FLAG_enable_embedded_constant_pool) { |
| 3740 | DCHECK(Assembler::IsLdrPcImmediateOffset(Memory::int32_at(load_address))); |
| 3741 | } else if (Assembler::IsLdrPpRegOffset(Memory::int32_at(load_address))) { |
| 3742 | // This is an extended constant pool lookup. |
| 3743 | if (CpuFeatures::IsSupported(ARMv7)) { |
| 3744 | load_address -= 2 * Assembler::kInstrSize; |
| 3745 | DCHECK(Assembler::IsMovW(Memory::int32_at(load_address))); |
| 3746 | DCHECK(Assembler::IsMovT( |
| 3747 | Memory::int32_at(load_address + Assembler::kInstrSize))); |
| 3748 | } else { |
| 3749 | load_address -= 4 * Assembler::kInstrSize; |
| 3750 | DCHECK(Assembler::IsMovImmed(Memory::int32_at(load_address))); |
| 3751 | DCHECK(Assembler::IsOrrImmed( |
| 3752 | Memory::int32_at(load_address + Assembler::kInstrSize))); |
| 3753 | DCHECK(Assembler::IsOrrImmed( |
| 3754 | Memory::int32_at(load_address + 2 * Assembler::kInstrSize))); |
| 3755 | DCHECK(Assembler::IsOrrImmed( |
| 3756 | Memory::int32_at(load_address + 3 * Assembler::kInstrSize))); |
| 3757 | } |
| 3758 | } else if (CpuFeatures::IsSupported(ARMv7) && |
| 3759 | Assembler::IsMovT(Memory::int32_at(load_address))) { |
| 3760 | // This is a movw / movt immediate load. |
| 3761 | load_address -= Assembler::kInstrSize; |
| 3762 | DCHECK(Assembler::IsMovW(Memory::int32_at(load_address))); |
| 3763 | } else if (!CpuFeatures::IsSupported(ARMv7) && |
| 3764 | Assembler::IsOrrImmed(Memory::int32_at(load_address))) { |
| 3765 | // This is a mov / orr immediate load. |
| 3766 | load_address -= 3 * Assembler::kInstrSize; |
| 3767 | DCHECK(Assembler::IsMovImmed(Memory::int32_at(load_address))); |
| 3768 | DCHECK(Assembler::IsOrrImmed( |
| 3769 | Memory::int32_at(load_address + Assembler::kInstrSize))); |
| 3770 | DCHECK(Assembler::IsOrrImmed( |
| 3771 | Memory::int32_at(load_address + 2 * Assembler::kInstrSize))); |
| 3772 | } else { |
| 3773 | // This is a small constant pool lookup. |
| 3774 | DCHECK(Assembler::IsLdrPpImmediateOffset(Memory::int32_at(load_address))); |
| 3775 | } |
| 3776 | return load_address; |
| 3777 | } |
| 3778 | |
| 3779 | |
| 3780 | void BackEdgeTable::PatchAt(Code* unoptimized_code, |
| 3781 | Address pc, |
| 3782 | BackEdgeState target_state, |
| 3783 | Code* replacement_code) { |
| 3784 | Address pc_immediate_load_address = GetInterruptImmediateLoadAddress(pc); |
| 3785 | Address branch_address = pc_immediate_load_address - Assembler::kInstrSize; |
| 3786 | Isolate* isolate = unoptimized_code->GetIsolate(); |
| 3787 | CodePatcher patcher(isolate, branch_address, 1); |
| 3788 | switch (target_state) { |
| 3789 | case INTERRUPT: |
| 3790 | { |
| 3791 | // <decrement profiling counter> |
| 3792 | // bpl ok |
| 3793 | // ; load interrupt stub address into ip - either of (for ARMv7): |
| 3794 | // ; <small cp load> | <extended cp load> | <immediate load> |
| 3795 | // ldr ip, [pc/pp, #imm] | movw ip, #imm | movw ip, #imm |
| 3796 | // | movt ip, #imm | movw ip, #imm |
| 3797 | // | ldr ip, [pp, ip] |
| 3798 | // ; or (for ARMv6): |
| 3799 | // ; <small cp load> | <extended cp load> | <immediate load> |
| 3800 | // ldr ip, [pc/pp, #imm] | mov ip, #imm | mov ip, #imm |
| 3801 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3802 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3803 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3804 | // blx ip |
| 3805 | // <reset profiling counter> |
| 3806 | // ok-label |
| 3807 | |
| 3808 | // Calculate branch offset to the ok-label - this is the difference |
| 3809 | // between the branch address and |pc| (which points at <blx ip>) plus |
| 3810 | // kProfileCounterResetSequence instructions |
| 3811 | int branch_offset = pc - Instruction::kPCReadOffset - branch_address + |
| 3812 | kProfileCounterResetSequenceLength; |
| 3813 | patcher.masm()->b(branch_offset, pl); |
| 3814 | break; |
| 3815 | } |
| 3816 | case ON_STACK_REPLACEMENT: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3817 | // <decrement profiling counter> |
| 3818 | // mov r0, r0 (NOP) |
| 3819 | // ; load on-stack replacement address into ip - either of (for ARMv7): |
| 3820 | // ; <small cp load> | <extended cp load> | <immediate load> |
| 3821 | // ldr ip, [pc/pp, #imm] | movw ip, #imm | movw ip, #imm |
| 3822 | // | movt ip, #imm> | movw ip, #imm |
| 3823 | // | ldr ip, [pp, ip] |
| 3824 | // ; or (for ARMv6): |
| 3825 | // ; <small cp load> | <extended cp load> | <immediate load> |
| 3826 | // ldr ip, [pc/pp, #imm] | mov ip, #imm | mov ip, #imm |
| 3827 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3828 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3829 | // | orr ip, ip, #imm> | orr ip, ip, #imm |
| 3830 | // blx ip |
| 3831 | // <reset profiling counter> |
| 3832 | // ok-label |
| 3833 | patcher.masm()->nop(); |
| 3834 | break; |
| 3835 | } |
| 3836 | |
| 3837 | // Replace the call address. |
| 3838 | Assembler::set_target_address_at(isolate, pc_immediate_load_address, |
| 3839 | unoptimized_code, replacement_code->entry()); |
| 3840 | |
| 3841 | unoptimized_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 3842 | unoptimized_code, pc_immediate_load_address, replacement_code); |
| 3843 | } |
| 3844 | |
| 3845 | |
| 3846 | BackEdgeTable::BackEdgeState BackEdgeTable::GetBackEdgeState( |
| 3847 | Isolate* isolate, |
| 3848 | Code* unoptimized_code, |
| 3849 | Address pc) { |
| 3850 | DCHECK(Assembler::IsBlxIp(Memory::int32_at(pc - Assembler::kInstrSize))); |
| 3851 | |
| 3852 | Address pc_immediate_load_address = GetInterruptImmediateLoadAddress(pc); |
| 3853 | Address branch_address = pc_immediate_load_address - Assembler::kInstrSize; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3854 | #ifdef DEBUG |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3855 | Address interrupt_address = Assembler::target_address_at( |
| 3856 | pc_immediate_load_address, unoptimized_code); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3857 | #endif |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3858 | |
| 3859 | if (Assembler::IsBranch(Assembler::instr_at(branch_address))) { |
| 3860 | DCHECK(interrupt_address == |
| 3861 | isolate->builtins()->InterruptCheck()->entry()); |
| 3862 | return INTERRUPT; |
| 3863 | } |
| 3864 | |
| 3865 | DCHECK(Assembler::IsNop(Assembler::instr_at(branch_address))); |
| 3866 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3867 | DCHECK(interrupt_address == |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 3868 | isolate->builtins()->OnStackReplacement()->entry()); |
| 3869 | return ON_STACK_REPLACEMENT; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3870 | } |
| 3871 | |
| 3872 | |
| 3873 | } // namespace internal |
| 3874 | } // namespace v8 |
| 3875 | |
| 3876 | #endif // V8_TARGET_ARCH_ARM |