Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2014 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 | #include "src/crankshaft/s390/lithium-s390.h" |
| 6 | |
| 7 | #include <sstream> |
| 8 | |
| 9 | #include "src/crankshaft/hydrogen-osr.h" |
| 10 | #include "src/crankshaft/lithium-inl.h" |
| 11 | #include "src/crankshaft/s390/lithium-codegen-s390.h" |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
| 16 | #define DEFINE_COMPILE(type) \ |
| 17 | void L##type::CompileToNative(LCodeGen* generator) { \ |
| 18 | generator->Do##type(this); \ |
| 19 | } |
| 20 | LITHIUM_CONCRETE_INSTRUCTION_LIST(DEFINE_COMPILE) |
| 21 | #undef DEFINE_COMPILE |
| 22 | |
| 23 | #ifdef DEBUG |
| 24 | void LInstruction::VerifyCall() { |
| 25 | // Call instructions can use only fixed registers as temporaries and |
| 26 | // outputs because all registers are blocked by the calling convention. |
| 27 | // Inputs operands must use a fixed register or use-at-start policy or |
| 28 | // a non-register policy. |
| 29 | DCHECK(Output() == NULL || LUnallocated::cast(Output())->HasFixedPolicy() || |
| 30 | !LUnallocated::cast(Output())->HasRegisterPolicy()); |
| 31 | for (UseIterator it(this); !it.Done(); it.Advance()) { |
| 32 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 33 | DCHECK(operand->HasFixedPolicy() || operand->IsUsedAtStart()); |
| 34 | } |
| 35 | for (TempIterator it(this); !it.Done(); it.Advance()) { |
| 36 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 37 | DCHECK(operand->HasFixedPolicy() || !operand->HasRegisterPolicy()); |
| 38 | } |
| 39 | } |
| 40 | #endif |
| 41 | |
| 42 | void LInstruction::PrintTo(StringStream* stream) { |
| 43 | stream->Add("%s ", this->Mnemonic()); |
| 44 | |
| 45 | PrintOutputOperandTo(stream); |
| 46 | |
| 47 | PrintDataTo(stream); |
| 48 | |
| 49 | if (HasEnvironment()) { |
| 50 | stream->Add(" "); |
| 51 | environment()->PrintTo(stream); |
| 52 | } |
| 53 | |
| 54 | if (HasPointerMap()) { |
| 55 | stream->Add(" "); |
| 56 | pointer_map()->PrintTo(stream); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | void LInstruction::PrintDataTo(StringStream* stream) { |
| 61 | stream->Add("= "); |
| 62 | for (int i = 0; i < InputCount(); i++) { |
| 63 | if (i > 0) stream->Add(" "); |
| 64 | if (InputAt(i) == NULL) { |
| 65 | stream->Add("NULL"); |
| 66 | } else { |
| 67 | InputAt(i)->PrintTo(stream); |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | void LInstruction::PrintOutputOperandTo(StringStream* stream) { |
| 73 | if (HasResult()) result()->PrintTo(stream); |
| 74 | } |
| 75 | |
| 76 | void LLabel::PrintDataTo(StringStream* stream) { |
| 77 | LGap::PrintDataTo(stream); |
| 78 | LLabel* rep = replacement(); |
| 79 | if (rep != NULL) { |
| 80 | stream->Add(" Dead block replaced with B%d", rep->block_id()); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | bool LGap::IsRedundant() const { |
| 85 | for (int i = 0; i < 4; i++) { |
| 86 | if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant()) { |
| 87 | return false; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | return true; |
| 92 | } |
| 93 | |
| 94 | void LGap::PrintDataTo(StringStream* stream) { |
| 95 | for (int i = 0; i < 4; i++) { |
| 96 | stream->Add("("); |
| 97 | if (parallel_moves_[i] != NULL) { |
| 98 | parallel_moves_[i]->PrintDataTo(stream); |
| 99 | } |
| 100 | stream->Add(") "); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | const char* LArithmeticD::Mnemonic() const { |
| 105 | switch (op()) { |
| 106 | case Token::ADD: |
| 107 | return "add-d"; |
| 108 | case Token::SUB: |
| 109 | return "sub-d"; |
| 110 | case Token::MUL: |
| 111 | return "mul-d"; |
| 112 | case Token::DIV: |
| 113 | return "div-d"; |
| 114 | case Token::MOD: |
| 115 | return "mod-d"; |
| 116 | default: |
| 117 | UNREACHABLE(); |
| 118 | return NULL; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | const char* LArithmeticT::Mnemonic() const { |
| 123 | switch (op()) { |
| 124 | case Token::ADD: |
| 125 | return "add-t"; |
| 126 | case Token::SUB: |
| 127 | return "sub-t"; |
| 128 | case Token::MUL: |
| 129 | return "mul-t"; |
| 130 | case Token::MOD: |
| 131 | return "mod-t"; |
| 132 | case Token::DIV: |
| 133 | return "div-t"; |
| 134 | case Token::BIT_AND: |
| 135 | return "bit-and-t"; |
| 136 | case Token::BIT_OR: |
| 137 | return "bit-or-t"; |
| 138 | case Token::BIT_XOR: |
| 139 | return "bit-xor-t"; |
| 140 | case Token::ROR: |
| 141 | return "ror-t"; |
| 142 | case Token::SHL: |
| 143 | return "shl-t"; |
| 144 | case Token::SAR: |
| 145 | return "sar-t"; |
| 146 | case Token::SHR: |
| 147 | return "shr-t"; |
| 148 | default: |
| 149 | UNREACHABLE(); |
| 150 | return NULL; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | bool LGoto::HasInterestingComment(LCodeGen* gen) const { |
| 155 | return !gen->IsNextEmittedBlock(block_id()); |
| 156 | } |
| 157 | |
| 158 | void LGoto::PrintDataTo(StringStream* stream) { |
| 159 | stream->Add("B%d", block_id()); |
| 160 | } |
| 161 | |
| 162 | void LBranch::PrintDataTo(StringStream* stream) { |
| 163 | stream->Add("B%d | B%d on ", true_block_id(), false_block_id()); |
| 164 | value()->PrintTo(stream); |
| 165 | } |
| 166 | |
| 167 | void LCompareNumericAndBranch::PrintDataTo(StringStream* stream) { |
| 168 | stream->Add("if "); |
| 169 | left()->PrintTo(stream); |
| 170 | stream->Add(" %s ", Token::String(op())); |
| 171 | right()->PrintTo(stream); |
| 172 | stream->Add(" then B%d else B%d", true_block_id(), false_block_id()); |
| 173 | } |
| 174 | |
| 175 | void LIsStringAndBranch::PrintDataTo(StringStream* stream) { |
| 176 | stream->Add("if is_string("); |
| 177 | value()->PrintTo(stream); |
| 178 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 179 | } |
| 180 | |
| 181 | void LIsSmiAndBranch::PrintDataTo(StringStream* stream) { |
| 182 | stream->Add("if is_smi("); |
| 183 | value()->PrintTo(stream); |
| 184 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 185 | } |
| 186 | |
| 187 | void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) { |
| 188 | stream->Add("if is_undetectable("); |
| 189 | value()->PrintTo(stream); |
| 190 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 191 | } |
| 192 | |
| 193 | void LStringCompareAndBranch::PrintDataTo(StringStream* stream) { |
| 194 | stream->Add("if string_compare("); |
| 195 | left()->PrintTo(stream); |
| 196 | right()->PrintTo(stream); |
| 197 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 198 | } |
| 199 | |
| 200 | void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) { |
| 201 | stream->Add("if has_instance_type("); |
| 202 | value()->PrintTo(stream); |
| 203 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 204 | } |
| 205 | |
| 206 | void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) { |
| 207 | stream->Add("if has_cached_array_index("); |
| 208 | value()->PrintTo(stream); |
| 209 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 210 | } |
| 211 | |
| 212 | void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) { |
| 213 | stream->Add("if class_of_test("); |
| 214 | value()->PrintTo(stream); |
| 215 | stream->Add(", \"%o\") then B%d else B%d", *hydrogen()->class_name(), |
| 216 | true_block_id(), false_block_id()); |
| 217 | } |
| 218 | |
| 219 | void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) { |
| 220 | stream->Add("if typeof "); |
| 221 | value()->PrintTo(stream); |
| 222 | stream->Add(" == \"%s\" then B%d else B%d", |
| 223 | hydrogen()->type_literal()->ToCString().get(), true_block_id(), |
| 224 | false_block_id()); |
| 225 | } |
| 226 | |
| 227 | void LStoreCodeEntry::PrintDataTo(StringStream* stream) { |
| 228 | stream->Add(" = "); |
| 229 | function()->PrintTo(stream); |
| 230 | stream->Add(".code_entry = "); |
| 231 | code_object()->PrintTo(stream); |
| 232 | } |
| 233 | |
| 234 | void LInnerAllocatedObject::PrintDataTo(StringStream* stream) { |
| 235 | stream->Add(" = "); |
| 236 | base_object()->PrintTo(stream); |
| 237 | stream->Add(" + "); |
| 238 | offset()->PrintTo(stream); |
| 239 | } |
| 240 | |
| 241 | void LCallWithDescriptor::PrintDataTo(StringStream* stream) { |
| 242 | for (int i = 0; i < InputCount(); i++) { |
| 243 | InputAt(i)->PrintTo(stream); |
| 244 | stream->Add(" "); |
| 245 | } |
| 246 | stream->Add("#%d / ", arity()); |
| 247 | } |
| 248 | |
| 249 | void LLoadContextSlot::PrintDataTo(StringStream* stream) { |
| 250 | context()->PrintTo(stream); |
| 251 | stream->Add("[%d]", slot_index()); |
| 252 | } |
| 253 | |
| 254 | void LStoreContextSlot::PrintDataTo(StringStream* stream) { |
| 255 | context()->PrintTo(stream); |
| 256 | stream->Add("[%d] <- ", slot_index()); |
| 257 | value()->PrintTo(stream); |
| 258 | } |
| 259 | |
| 260 | void LInvokeFunction::PrintDataTo(StringStream* stream) { |
| 261 | stream->Add("= "); |
| 262 | function()->PrintTo(stream); |
| 263 | stream->Add(" #%d / ", arity()); |
| 264 | } |
| 265 | |
| 266 | void LCallNewArray::PrintDataTo(StringStream* stream) { |
| 267 | stream->Add("= "); |
| 268 | constructor()->PrintTo(stream); |
| 269 | stream->Add(" #%d / ", arity()); |
| 270 | ElementsKind kind = hydrogen()->elements_kind(); |
| 271 | stream->Add(" (%s) ", ElementsKindToString(kind)); |
| 272 | } |
| 273 | |
| 274 | void LAccessArgumentsAt::PrintDataTo(StringStream* stream) { |
| 275 | arguments()->PrintTo(stream); |
| 276 | stream->Add(" length "); |
| 277 | length()->PrintTo(stream); |
| 278 | stream->Add(" index "); |
| 279 | index()->PrintTo(stream); |
| 280 | } |
| 281 | |
| 282 | void LStoreNamedField::PrintDataTo(StringStream* stream) { |
| 283 | object()->PrintTo(stream); |
| 284 | std::ostringstream os; |
| 285 | os << hydrogen()->access() << " <- "; |
| 286 | stream->Add(os.str().c_str()); |
| 287 | value()->PrintTo(stream); |
| 288 | } |
| 289 | |
| 290 | void LStoreNamedGeneric::PrintDataTo(StringStream* stream) { |
| 291 | object()->PrintTo(stream); |
| 292 | stream->Add("."); |
| 293 | stream->Add(String::cast(*name())->ToCString().get()); |
| 294 | stream->Add(" <- "); |
| 295 | value()->PrintTo(stream); |
| 296 | } |
| 297 | |
| 298 | void LLoadKeyed::PrintDataTo(StringStream* stream) { |
| 299 | elements()->PrintTo(stream); |
| 300 | stream->Add("["); |
| 301 | key()->PrintTo(stream); |
| 302 | if (hydrogen()->IsDehoisted()) { |
| 303 | stream->Add(" + %d]", base_offset()); |
| 304 | } else { |
| 305 | stream->Add("]"); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | void LStoreKeyed::PrintDataTo(StringStream* stream) { |
| 310 | elements()->PrintTo(stream); |
| 311 | stream->Add("["); |
| 312 | key()->PrintTo(stream); |
| 313 | if (hydrogen()->IsDehoisted()) { |
| 314 | stream->Add(" + %d] <-", base_offset()); |
| 315 | } else { |
| 316 | stream->Add("] <- "); |
| 317 | } |
| 318 | |
| 319 | if (value() == NULL) { |
| 320 | DCHECK(hydrogen()->IsConstantHoleStore() && |
| 321 | hydrogen()->value()->representation().IsDouble()); |
| 322 | stream->Add("<the hole(nan)>"); |
| 323 | } else { |
| 324 | value()->PrintTo(stream); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | void LStoreKeyedGeneric::PrintDataTo(StringStream* stream) { |
| 329 | object()->PrintTo(stream); |
| 330 | stream->Add("["); |
| 331 | key()->PrintTo(stream); |
| 332 | stream->Add("] <- "); |
| 333 | value()->PrintTo(stream); |
| 334 | } |
| 335 | |
| 336 | void LTransitionElementsKind::PrintDataTo(StringStream* stream) { |
| 337 | object()->PrintTo(stream); |
| 338 | stream->Add(" %p -> %p", *original_map(), *transitioned_map()); |
| 339 | } |
| 340 | |
| 341 | int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) { |
| 342 | // Skip a slot if for a double-width slot. |
| 343 | if (kind == DOUBLE_REGISTERS) current_frame_slots_++; |
| 344 | return current_frame_slots_++; |
| 345 | } |
| 346 | |
| 347 | LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) { |
| 348 | int index = GetNextSpillIndex(kind); |
| 349 | if (kind == DOUBLE_REGISTERS) { |
| 350 | return LDoubleStackSlot::Create(index, zone()); |
| 351 | } else { |
| 352 | DCHECK(kind == GENERAL_REGISTERS); |
| 353 | return LStackSlot::Create(index, zone()); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | LPlatformChunk* LChunkBuilder::Build() { |
| 358 | DCHECK(is_unused()); |
| 359 | chunk_ = new (zone()) LPlatformChunk(info(), graph()); |
| 360 | LPhase phase("L_Building chunk", chunk_); |
| 361 | status_ = BUILDING; |
| 362 | |
| 363 | // If compiling for OSR, reserve space for the unoptimized frame, |
| 364 | // which will be subsumed into this frame. |
| 365 | if (graph()->has_osr()) { |
| 366 | for (int i = graph()->osr()->UnoptimizedFrameSlots(); i > 0; i--) { |
| 367 | chunk_->GetNextSpillIndex(GENERAL_REGISTERS); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | const ZoneList<HBasicBlock*>* blocks = graph()->blocks(); |
| 372 | for (int i = 0; i < blocks->length(); i++) { |
| 373 | HBasicBlock* next = NULL; |
| 374 | if (i < blocks->length() - 1) next = blocks->at(i + 1); |
| 375 | DoBasicBlock(blocks->at(i), next); |
| 376 | if (is_aborted()) return NULL; |
| 377 | } |
| 378 | status_ = DONE; |
| 379 | return chunk_; |
| 380 | } |
| 381 | |
| 382 | LUnallocated* LChunkBuilder::ToUnallocated(Register reg) { |
| 383 | return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER, reg.code()); |
| 384 | } |
| 385 | |
| 386 | LUnallocated* LChunkBuilder::ToUnallocated(DoubleRegister reg) { |
| 387 | return new (zone()) |
| 388 | LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, reg.code()); |
| 389 | } |
| 390 | |
| 391 | LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) { |
| 392 | return Use(value, ToUnallocated(fixed_register)); |
| 393 | } |
| 394 | |
| 395 | LOperand* LChunkBuilder::UseFixedDouble(HValue* value, DoubleRegister reg) { |
| 396 | return Use(value, ToUnallocated(reg)); |
| 397 | } |
| 398 | |
| 399 | LOperand* LChunkBuilder::UseRegister(HValue* value) { |
| 400 | return Use(value, |
| 401 | new (zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 402 | } |
| 403 | |
| 404 | LOperand* LChunkBuilder::UseRegisterAtStart(HValue* value) { |
| 405 | return Use(value, new (zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER, |
| 406 | LUnallocated::USED_AT_START)); |
| 407 | } |
| 408 | |
| 409 | LOperand* LChunkBuilder::UseTempRegister(HValue* value) { |
| 410 | return Use(value, new (zone()) LUnallocated(LUnallocated::WRITABLE_REGISTER)); |
| 411 | } |
| 412 | |
| 413 | LOperand* LChunkBuilder::Use(HValue* value) { |
| 414 | return Use(value, new (zone()) LUnallocated(LUnallocated::NONE)); |
| 415 | } |
| 416 | |
| 417 | LOperand* LChunkBuilder::UseAtStart(HValue* value) { |
| 418 | return Use(value, new (zone()) LUnallocated(LUnallocated::NONE, |
| 419 | LUnallocated::USED_AT_START)); |
| 420 | } |
| 421 | |
| 422 | LOperand* LChunkBuilder::UseOrConstant(HValue* value) { |
| 423 | return value->IsConstant() |
| 424 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 425 | : Use(value); |
| 426 | } |
| 427 | |
| 428 | LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) { |
| 429 | return value->IsConstant() |
| 430 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 431 | : UseAtStart(value); |
| 432 | } |
| 433 | |
| 434 | LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) { |
| 435 | return value->IsConstant() |
| 436 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 437 | : UseRegister(value); |
| 438 | } |
| 439 | |
| 440 | LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) { |
| 441 | return value->IsConstant() |
| 442 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 443 | : UseRegisterAtStart(value); |
| 444 | } |
| 445 | |
| 446 | LOperand* LChunkBuilder::UseConstant(HValue* value) { |
| 447 | return chunk_->DefineConstantOperand(HConstant::cast(value)); |
| 448 | } |
| 449 | |
| 450 | LOperand* LChunkBuilder::UseAny(HValue* value) { |
| 451 | return value->IsConstant() |
| 452 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 453 | : Use(value, new (zone()) LUnallocated(LUnallocated::ANY)); |
| 454 | } |
| 455 | |
| 456 | LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) { |
| 457 | if (value->EmitAtUses()) { |
| 458 | HInstruction* instr = HInstruction::cast(value); |
| 459 | VisitInstruction(instr); |
| 460 | } |
| 461 | operand->set_virtual_register(value->id()); |
| 462 | return operand; |
| 463 | } |
| 464 | |
| 465 | LInstruction* LChunkBuilder::Define(LTemplateResultInstruction<1>* instr, |
| 466 | LUnallocated* result) { |
| 467 | result->set_virtual_register(current_instruction_->id()); |
| 468 | instr->set_result(result); |
| 469 | return instr; |
| 470 | } |
| 471 | |
| 472 | LInstruction* LChunkBuilder::DefineAsRegister( |
| 473 | LTemplateResultInstruction<1>* instr) { |
| 474 | return Define(instr, |
| 475 | new (zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 476 | } |
| 477 | |
| 478 | LInstruction* LChunkBuilder::DefineAsSpilled( |
| 479 | LTemplateResultInstruction<1>* instr, int index) { |
| 480 | return Define(instr, |
| 481 | new (zone()) LUnallocated(LUnallocated::FIXED_SLOT, index)); |
| 482 | } |
| 483 | |
| 484 | LInstruction* LChunkBuilder::DefineSameAsFirst( |
| 485 | LTemplateResultInstruction<1>* instr) { |
| 486 | return Define(instr, |
| 487 | new (zone()) LUnallocated(LUnallocated::SAME_AS_FIRST_INPUT)); |
| 488 | } |
| 489 | |
| 490 | LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr, |
| 491 | Register reg) { |
| 492 | return Define(instr, ToUnallocated(reg)); |
| 493 | } |
| 494 | |
| 495 | LInstruction* LChunkBuilder::DefineFixedDouble( |
| 496 | LTemplateResultInstruction<1>* instr, DoubleRegister reg) { |
| 497 | return Define(instr, ToUnallocated(reg)); |
| 498 | } |
| 499 | |
| 500 | LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) { |
| 501 | HEnvironment* hydrogen_env = current_block_->last_environment(); |
| 502 | return LChunkBuilderBase::AssignEnvironment(instr, hydrogen_env); |
| 503 | } |
| 504 | |
| 505 | LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr, |
| 506 | HInstruction* hinstr, |
| 507 | CanDeoptimize can_deoptimize) { |
| 508 | info()->MarkAsNonDeferredCalling(); |
| 509 | #ifdef DEBUG |
| 510 | instr->VerifyCall(); |
| 511 | #endif |
| 512 | instr->MarkAsCall(); |
| 513 | instr = AssignPointerMap(instr); |
| 514 | |
| 515 | // If instruction does not have side-effects lazy deoptimization |
| 516 | // after the call will try to deoptimize to the point before the call. |
| 517 | // Thus we still need to attach environment to this call even if |
| 518 | // call sequence can not deoptimize eagerly. |
| 519 | bool needs_environment = (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) || |
| 520 | !hinstr->HasObservableSideEffects(); |
| 521 | if (needs_environment && !instr->HasEnvironment()) { |
| 522 | instr = AssignEnvironment(instr); |
| 523 | // We can't really figure out if the environment is needed or not. |
| 524 | instr->environment()->set_has_been_used(); |
| 525 | } |
| 526 | |
| 527 | return instr; |
| 528 | } |
| 529 | |
| 530 | LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { |
| 531 | DCHECK(!instr->HasPointerMap()); |
| 532 | instr->set_pointer_map(new (zone()) LPointerMap(zone())); |
| 533 | return instr; |
| 534 | } |
| 535 | |
| 536 | LUnallocated* LChunkBuilder::TempRegister() { |
| 537 | LUnallocated* operand = |
| 538 | new (zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER); |
| 539 | int vreg = allocator_->GetVirtualRegister(); |
| 540 | if (!allocator_->AllocationOk()) { |
| 541 | Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister); |
| 542 | vreg = 0; |
| 543 | } |
| 544 | operand->set_virtual_register(vreg); |
| 545 | return operand; |
| 546 | } |
| 547 | |
| 548 | LUnallocated* LChunkBuilder::TempDoubleRegister() { |
| 549 | LUnallocated* operand = |
| 550 | new (zone()) LUnallocated(LUnallocated::MUST_HAVE_DOUBLE_REGISTER); |
| 551 | int vreg = allocator_->GetVirtualRegister(); |
| 552 | if (!allocator_->AllocationOk()) { |
| 553 | Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister); |
| 554 | vreg = 0; |
| 555 | } |
| 556 | operand->set_virtual_register(vreg); |
| 557 | return operand; |
| 558 | } |
| 559 | |
| 560 | LOperand* LChunkBuilder::FixedTemp(Register reg) { |
| 561 | LUnallocated* operand = ToUnallocated(reg); |
| 562 | DCHECK(operand->HasFixedPolicy()); |
| 563 | return operand; |
| 564 | } |
| 565 | |
| 566 | LOperand* LChunkBuilder::FixedTemp(DoubleRegister reg) { |
| 567 | LUnallocated* operand = ToUnallocated(reg); |
| 568 | DCHECK(operand->HasFixedPolicy()); |
| 569 | return operand; |
| 570 | } |
| 571 | |
| 572 | LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) { |
| 573 | return new (zone()) LLabel(instr->block()); |
| 574 | } |
| 575 | |
| 576 | LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) { |
| 577 | return DefineAsRegister(new (zone()) LDummyUse(UseAny(instr->value()))); |
| 578 | } |
| 579 | |
| 580 | LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) { |
| 581 | UNREACHABLE(); |
| 582 | return NULL; |
| 583 | } |
| 584 | |
| 585 | LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) { |
| 586 | return AssignEnvironment(new (zone()) LDeoptimize); |
| 587 | } |
| 588 | |
| 589 | LInstruction* LChunkBuilder::DoShift(Token::Value op, |
| 590 | HBitwiseBinaryOperation* instr) { |
| 591 | if (instr->representation().IsSmiOrInteger32()) { |
| 592 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 593 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 594 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 595 | |
| 596 | HValue* right_value = instr->right(); |
| 597 | LOperand* right = NULL; |
| 598 | int constant_value = 0; |
| 599 | bool does_deopt = false; |
| 600 | if (right_value->IsConstant()) { |
| 601 | HConstant* constant = HConstant::cast(right_value); |
| 602 | right = chunk_->DefineConstantOperand(constant); |
| 603 | constant_value = constant->Integer32Value() & 0x1f; |
| 604 | // Left shifts can deoptimize if we shift by > 0 and the result cannot be |
| 605 | // truncated to smi. |
| 606 | if (instr->representation().IsSmi() && constant_value > 0) { |
| 607 | does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); |
| 608 | } |
| 609 | } else { |
| 610 | right = UseRegisterAtStart(right_value); |
| 611 | } |
| 612 | |
| 613 | // Shift operations can only deoptimize if we do a logical shift |
| 614 | // by 0 and the result cannot be truncated to int32. |
| 615 | if (op == Token::SHR && constant_value == 0) { |
| 616 | does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 617 | } |
| 618 | |
| 619 | LInstruction* result = |
| 620 | DefineAsRegister(new (zone()) LShiftI(op, left, right, does_deopt)); |
| 621 | return does_deopt ? AssignEnvironment(result) : result; |
| 622 | } else { |
| 623 | return DoArithmeticT(op, instr); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
| 628 | HArithmeticBinaryOperation* instr) { |
| 629 | DCHECK(instr->representation().IsDouble()); |
| 630 | DCHECK(instr->left()->representation().IsDouble()); |
| 631 | DCHECK(instr->right()->representation().IsDouble()); |
| 632 | if (op == Token::MOD) { |
| 633 | LOperand* left = UseFixedDouble(instr->left(), d1); |
| 634 | LOperand* right = UseFixedDouble(instr->right(), d2); |
| 635 | LArithmeticD* result = new (zone()) LArithmeticD(op, left, right); |
| 636 | // We call a C function for double modulo. It can't trigger a GC. We need |
| 637 | // to use fixed result register for the call. |
| 638 | // TODO(fschneider): Allow any register as input registers. |
| 639 | return MarkAsCall(DefineFixedDouble(result, d1), instr); |
| 640 | } else { |
| 641 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 642 | LOperand* right = UseRegisterAtStart(instr->BetterRightOperand()); |
| 643 | LArithmeticD* result = new (zone()) LArithmeticD(op, left, right); |
| 644 | return DefineSameAsFirst(result); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op, |
| 649 | HBinaryOperation* instr) { |
| 650 | HValue* left = instr->left(); |
| 651 | HValue* right = instr->right(); |
| 652 | DCHECK(left->representation().IsTagged()); |
| 653 | DCHECK(right->representation().IsTagged()); |
| 654 | LOperand* context = UseFixed(instr->context(), cp); |
| 655 | LOperand* left_operand = UseFixed(left, r3); |
| 656 | LOperand* right_operand = UseFixed(right, r2); |
| 657 | LArithmeticT* result = |
| 658 | new (zone()) LArithmeticT(op, context, left_operand, right_operand); |
| 659 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 660 | } |
| 661 | |
| 662 | void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) { |
| 663 | DCHECK(is_building()); |
| 664 | current_block_ = block; |
| 665 | next_block_ = next_block; |
| 666 | if (block->IsStartBlock()) { |
| 667 | block->UpdateEnvironment(graph_->start_environment()); |
| 668 | argument_count_ = 0; |
| 669 | } else if (block->predecessors()->length() == 1) { |
| 670 | // We have a single predecessor => copy environment and outgoing |
| 671 | // argument count from the predecessor. |
| 672 | DCHECK(block->phis()->length() == 0); |
| 673 | HBasicBlock* pred = block->predecessors()->at(0); |
| 674 | HEnvironment* last_environment = pred->last_environment(); |
| 675 | DCHECK(last_environment != NULL); |
| 676 | // Only copy the environment, if it is later used again. |
| 677 | if (pred->end()->SecondSuccessor() == NULL) { |
| 678 | DCHECK(pred->end()->FirstSuccessor() == block); |
| 679 | } else { |
| 680 | if (pred->end()->FirstSuccessor()->block_id() > block->block_id() || |
| 681 | pred->end()->SecondSuccessor()->block_id() > block->block_id()) { |
| 682 | last_environment = last_environment->Copy(); |
| 683 | } |
| 684 | } |
| 685 | block->UpdateEnvironment(last_environment); |
| 686 | DCHECK(pred->argument_count() >= 0); |
| 687 | argument_count_ = pred->argument_count(); |
| 688 | } else { |
| 689 | // We are at a state join => process phis. |
| 690 | HBasicBlock* pred = block->predecessors()->at(0); |
| 691 | // No need to copy the environment, it cannot be used later. |
| 692 | HEnvironment* last_environment = pred->last_environment(); |
| 693 | for (int i = 0; i < block->phis()->length(); ++i) { |
| 694 | HPhi* phi = block->phis()->at(i); |
| 695 | if (phi->HasMergedIndex()) { |
| 696 | last_environment->SetValueAt(phi->merged_index(), phi); |
| 697 | } |
| 698 | } |
| 699 | for (int i = 0; i < block->deleted_phis()->length(); ++i) { |
| 700 | if (block->deleted_phis()->at(i) < last_environment->length()) { |
| 701 | last_environment->SetValueAt(block->deleted_phis()->at(i), |
| 702 | graph_->GetConstantUndefined()); |
| 703 | } |
| 704 | } |
| 705 | block->UpdateEnvironment(last_environment); |
| 706 | // Pick up the outgoing argument count of one of the predecessors. |
| 707 | argument_count_ = pred->argument_count(); |
| 708 | } |
| 709 | HInstruction* current = block->first(); |
| 710 | int start = chunk_->instructions()->length(); |
| 711 | while (current != NULL && !is_aborted()) { |
| 712 | // Code for constants in registers is generated lazily. |
| 713 | if (!current->EmitAtUses()) { |
| 714 | VisitInstruction(current); |
| 715 | } |
| 716 | current = current->next(); |
| 717 | } |
| 718 | int end = chunk_->instructions()->length() - 1; |
| 719 | if (end >= start) { |
| 720 | block->set_first_instruction_index(start); |
| 721 | block->set_last_instruction_index(end); |
| 722 | } |
| 723 | block->set_argument_count(argument_count_); |
| 724 | next_block_ = NULL; |
| 725 | current_block_ = NULL; |
| 726 | } |
| 727 | |
| 728 | void LChunkBuilder::VisitInstruction(HInstruction* current) { |
| 729 | HInstruction* old_current = current_instruction_; |
| 730 | current_instruction_ = current; |
| 731 | |
| 732 | LInstruction* instr = NULL; |
| 733 | if (current->CanReplaceWithDummyUses()) { |
| 734 | if (current->OperandCount() == 0) { |
| 735 | instr = DefineAsRegister(new (zone()) LDummy()); |
| 736 | } else { |
| 737 | DCHECK(!current->OperandAt(0)->IsControlInstruction()); |
| 738 | instr = DefineAsRegister(new (zone()) |
| 739 | LDummyUse(UseAny(current->OperandAt(0)))); |
| 740 | } |
| 741 | for (int i = 1; i < current->OperandCount(); ++i) { |
| 742 | if (current->OperandAt(i)->IsControlInstruction()) continue; |
| 743 | LInstruction* dummy = |
| 744 | new (zone()) LDummyUse(UseAny(current->OperandAt(i))); |
| 745 | dummy->set_hydrogen_value(current); |
| 746 | chunk_->AddInstruction(dummy, current_block_); |
| 747 | } |
| 748 | } else { |
| 749 | HBasicBlock* successor; |
| 750 | if (current->IsControlInstruction() && |
| 751 | HControlInstruction::cast(current)->KnownSuccessorBlock(&successor) && |
| 752 | successor != NULL) { |
| 753 | instr = new (zone()) LGoto(successor); |
| 754 | } else { |
| 755 | instr = current->CompileToLithium(this); |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | argument_count_ += current->argument_delta(); |
| 760 | DCHECK(argument_count_ >= 0); |
| 761 | |
| 762 | if (instr != NULL) { |
| 763 | AddInstruction(instr, current); |
| 764 | } |
| 765 | |
| 766 | current_instruction_ = old_current; |
| 767 | } |
| 768 | |
| 769 | void LChunkBuilder::AddInstruction(LInstruction* instr, |
| 770 | HInstruction* hydrogen_val) { |
| 771 | // Associate the hydrogen instruction first, since we may need it for |
| 772 | // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below. |
| 773 | instr->set_hydrogen_value(hydrogen_val); |
| 774 | |
| 775 | #if DEBUG |
| 776 | // Make sure that the lithium instruction has either no fixed register |
| 777 | // constraints in temps or the result OR no uses that are only used at |
| 778 | // start. If this invariant doesn't hold, the register allocator can decide |
| 779 | // to insert a split of a range immediately before the instruction due to an |
| 780 | // already allocated register needing to be used for the instruction's fixed |
| 781 | // register constraint. In this case, The register allocator won't see an |
| 782 | // interference between the split child and the use-at-start (it would if |
| 783 | // the it was just a plain use), so it is free to move the split child into |
| 784 | // the same register that is used for the use-at-start. |
| 785 | // See https://code.google.com/p/chromium/issues/detail?id=201590 |
| 786 | if (!(instr->ClobbersRegisters() && |
| 787 | instr->ClobbersDoubleRegisters(isolate()))) { |
| 788 | int fixed = 0; |
| 789 | int used_at_start = 0; |
| 790 | for (UseIterator it(instr); !it.Done(); it.Advance()) { |
| 791 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 792 | if (operand->IsUsedAtStart()) ++used_at_start; |
| 793 | } |
| 794 | if (instr->Output() != NULL) { |
| 795 | if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed; |
| 796 | } |
| 797 | for (TempIterator it(instr); !it.Done(); it.Advance()) { |
| 798 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 799 | if (operand->HasFixedPolicy()) ++fixed; |
| 800 | } |
| 801 | DCHECK(fixed == 0 || used_at_start == 0); |
| 802 | } |
| 803 | #endif |
| 804 | |
| 805 | if (FLAG_stress_pointer_maps && !instr->HasPointerMap()) { |
| 806 | instr = AssignPointerMap(instr); |
| 807 | } |
| 808 | if (FLAG_stress_environments && !instr->HasEnvironment()) { |
| 809 | instr = AssignEnvironment(instr); |
| 810 | } |
| 811 | chunk_->AddInstruction(instr, current_block_); |
| 812 | |
| 813 | CreateLazyBailoutForCall(current_block_, instr, hydrogen_val); |
| 814 | } |
| 815 | |
| 816 | LInstruction* LChunkBuilder::DoPrologue(HPrologue* instr) { |
| 817 | LInstruction* result = new (zone()) LPrologue(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 818 | if (info_->scope()->num_heap_slots() > 0) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 819 | result = MarkAsCall(result, instr); |
| 820 | } |
| 821 | return result; |
| 822 | } |
| 823 | |
| 824 | LInstruction* LChunkBuilder::DoGoto(HGoto* instr) { |
| 825 | return new (zone()) LGoto(instr->FirstSuccessor()); |
| 826 | } |
| 827 | |
| 828 | LInstruction* LChunkBuilder::DoBranch(HBranch* instr) { |
| 829 | HValue* value = instr->value(); |
| 830 | Representation r = value->representation(); |
| 831 | HType type = value->type(); |
| 832 | ToBooleanICStub::Types expected = instr->expected_input_types(); |
| 833 | if (expected.IsEmpty()) expected = ToBooleanICStub::Types::Generic(); |
| 834 | |
| 835 | bool easy_case = !r.IsTagged() || type.IsBoolean() || type.IsSmi() || |
| 836 | type.IsJSArray() || type.IsHeapNumber() || type.IsString(); |
| 837 | LInstruction* branch = new (zone()) LBranch(UseRegister(value)); |
| 838 | if (!easy_case && |
| 839 | ((!expected.Contains(ToBooleanICStub::SMI) && expected.NeedsMap()) || |
| 840 | !expected.IsGeneric())) { |
| 841 | branch = AssignEnvironment(branch); |
| 842 | } |
| 843 | return branch; |
| 844 | } |
| 845 | |
| 846 | LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) { |
| 847 | return new (zone()) LDebugBreak(); |
| 848 | } |
| 849 | |
| 850 | LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) { |
| 851 | DCHECK(instr->value()->representation().IsTagged()); |
| 852 | LOperand* value = UseRegister(instr->value()); |
| 853 | LOperand* temp = TempRegister(); |
| 854 | return new (zone()) LCmpMapAndBranch(value, temp); |
| 855 | } |
| 856 | |
| 857 | LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* instr) { |
| 858 | info()->MarkAsRequiresFrame(); |
| 859 | LOperand* value = UseRegister(instr->value()); |
| 860 | return DefineAsRegister(new (zone()) LArgumentsLength(value)); |
| 861 | } |
| 862 | |
| 863 | LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) { |
| 864 | info()->MarkAsRequiresFrame(); |
| 865 | return DefineAsRegister(new (zone()) LArgumentsElements); |
| 866 | } |
| 867 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 868 | LInstruction* LChunkBuilder::DoHasInPrototypeChainAndBranch( |
| 869 | HHasInPrototypeChainAndBranch* instr) { |
| 870 | LOperand* object = UseRegister(instr->object()); |
| 871 | LOperand* prototype = UseRegister(instr->prototype()); |
| 872 | LHasInPrototypeChainAndBranch* result = |
| 873 | new (zone()) LHasInPrototypeChainAndBranch(object, prototype); |
| 874 | return AssignEnvironment(result); |
| 875 | } |
| 876 | |
| 877 | LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) { |
| 878 | LOperand* receiver = UseRegisterAtStart(instr->receiver()); |
| 879 | LOperand* function = UseRegisterAtStart(instr->function()); |
| 880 | LWrapReceiver* result = new (zone()) LWrapReceiver(receiver, function); |
| 881 | return AssignEnvironment(DefineAsRegister(result)); |
| 882 | } |
| 883 | |
| 884 | LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) { |
| 885 | LOperand* function = UseFixed(instr->function(), r3); |
| 886 | LOperand* receiver = UseFixed(instr->receiver(), r2); |
| 887 | LOperand* length = UseFixed(instr->length(), r4); |
| 888 | LOperand* elements = UseFixed(instr->elements(), r5); |
| 889 | LApplyArguments* result = |
| 890 | new (zone()) LApplyArguments(function, receiver, length, elements); |
| 891 | return MarkAsCall(DefineFixed(result, r2), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 892 | } |
| 893 | |
| 894 | LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) { |
| 895 | int argc = instr->OperandCount(); |
| 896 | for (int i = 0; i < argc; ++i) { |
| 897 | LOperand* argument = Use(instr->argument(i)); |
| 898 | AddInstruction(new (zone()) LPushArgument(argument), instr); |
| 899 | } |
| 900 | return NULL; |
| 901 | } |
| 902 | |
| 903 | LInstruction* LChunkBuilder::DoStoreCodeEntry( |
| 904 | HStoreCodeEntry* store_code_entry) { |
| 905 | LOperand* function = UseRegister(store_code_entry->function()); |
| 906 | LOperand* code_object = UseTempRegister(store_code_entry->code_object()); |
| 907 | return new (zone()) LStoreCodeEntry(function, code_object); |
| 908 | } |
| 909 | |
| 910 | LInstruction* LChunkBuilder::DoInnerAllocatedObject( |
| 911 | HInnerAllocatedObject* instr) { |
| 912 | LOperand* base_object = UseRegisterAtStart(instr->base_object()); |
| 913 | LOperand* offset = UseRegisterOrConstantAtStart(instr->offset()); |
| 914 | return DefineAsRegister(new (zone()) |
| 915 | LInnerAllocatedObject(base_object, offset)); |
| 916 | } |
| 917 | |
| 918 | LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) { |
| 919 | return instr->HasNoUses() ? NULL |
| 920 | : DefineAsRegister(new (zone()) LThisFunction); |
| 921 | } |
| 922 | |
| 923 | LInstruction* LChunkBuilder::DoContext(HContext* instr) { |
| 924 | if (instr->HasNoUses()) return NULL; |
| 925 | |
| 926 | if (info()->IsStub()) { |
| 927 | return DefineFixed(new (zone()) LContext, cp); |
| 928 | } |
| 929 | |
| 930 | return DefineAsRegister(new (zone()) LContext); |
| 931 | } |
| 932 | |
| 933 | LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) { |
| 934 | LOperand* context = UseFixed(instr->context(), cp); |
| 935 | return MarkAsCall(new (zone()) LDeclareGlobals(context), instr); |
| 936 | } |
| 937 | |
| 938 | LInstruction* LChunkBuilder::DoCallWithDescriptor(HCallWithDescriptor* instr) { |
| 939 | CallInterfaceDescriptor descriptor = instr->descriptor(); |
| 940 | |
| 941 | LOperand* target = UseRegisterOrConstantAtStart(instr->target()); |
| 942 | ZoneList<LOperand*> ops(instr->OperandCount(), zone()); |
| 943 | // Target |
| 944 | ops.Add(target, zone()); |
| 945 | // Context |
| 946 | LOperand* op = UseFixed(instr->OperandAt(1), cp); |
| 947 | ops.Add(op, zone()); |
| 948 | // Other register parameters |
| 949 | for (int i = LCallWithDescriptor::kImplicitRegisterParameterCount; |
| 950 | i < instr->OperandCount(); i++) { |
| 951 | op = |
| 952 | UseFixed(instr->OperandAt(i), |
| 953 | descriptor.GetRegisterParameter( |
| 954 | i - LCallWithDescriptor::kImplicitRegisterParameterCount)); |
| 955 | ops.Add(op, zone()); |
| 956 | } |
| 957 | |
| 958 | LCallWithDescriptor* result = |
| 959 | new (zone()) LCallWithDescriptor(descriptor, ops, zone()); |
| 960 | if (instr->syntactic_tail_call_mode() == TailCallMode::kAllow) { |
| 961 | result->MarkAsSyntacticTailCall(); |
| 962 | } |
| 963 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 964 | } |
| 965 | |
| 966 | LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) { |
| 967 | LOperand* context = UseFixed(instr->context(), cp); |
| 968 | LOperand* function = UseFixed(instr->function(), r3); |
| 969 | LInvokeFunction* result = new (zone()) LInvokeFunction(context, function); |
| 970 | if (instr->syntactic_tail_call_mode() == TailCallMode::kAllow) { |
| 971 | result->MarkAsSyntacticTailCall(); |
| 972 | } |
| 973 | return MarkAsCall(DefineFixed(result, r2), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| 974 | } |
| 975 | |
| 976 | LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) { |
| 977 | switch (instr->op()) { |
| 978 | case kMathFloor: |
| 979 | return DoMathFloor(instr); |
| 980 | case kMathRound: |
| 981 | return DoMathRound(instr); |
| 982 | case kMathFround: |
| 983 | return DoMathFround(instr); |
| 984 | case kMathAbs: |
| 985 | return DoMathAbs(instr); |
| 986 | case kMathLog: |
| 987 | return DoMathLog(instr); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 988 | case kMathCos: |
| 989 | return DoMathCos(instr); |
| 990 | case kMathSin: |
| 991 | return DoMathSin(instr); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 992 | case kMathExp: |
| 993 | return DoMathExp(instr); |
| 994 | case kMathSqrt: |
| 995 | return DoMathSqrt(instr); |
| 996 | case kMathPowHalf: |
| 997 | return DoMathPowHalf(instr); |
| 998 | case kMathClz32: |
| 999 | return DoMathClz32(instr); |
| 1000 | default: |
| 1001 | UNREACHABLE(); |
| 1002 | return NULL; |
| 1003 | } |
| 1004 | } |
| 1005 | |
| 1006 | LInstruction* LChunkBuilder::DoMathFloor(HUnaryMathOperation* instr) { |
| 1007 | LOperand* input = UseRegister(instr->value()); |
| 1008 | LMathFloor* result = new (zone()) LMathFloor(input); |
| 1009 | return AssignEnvironment(AssignPointerMap(DefineAsRegister(result))); |
| 1010 | } |
| 1011 | |
| 1012 | LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) { |
| 1013 | LOperand* input = UseRegister(instr->value()); |
| 1014 | LOperand* temp = TempDoubleRegister(); |
| 1015 | LMathRound* result = new (zone()) LMathRound(input, temp); |
| 1016 | return AssignEnvironment(DefineAsRegister(result)); |
| 1017 | } |
| 1018 | |
| 1019 | LInstruction* LChunkBuilder::DoMathFround(HUnaryMathOperation* instr) { |
| 1020 | LOperand* input = UseRegister(instr->value()); |
| 1021 | LMathFround* result = new (zone()) LMathFround(input); |
| 1022 | return DefineAsRegister(result); |
| 1023 | } |
| 1024 | |
| 1025 | LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) { |
| 1026 | Representation r = instr->value()->representation(); |
| 1027 | LOperand* context = (r.IsDouble() || r.IsSmiOrInteger32()) |
| 1028 | ? NULL |
| 1029 | : UseFixed(instr->context(), cp); |
| 1030 | LOperand* input = UseRegister(instr->value()); |
| 1031 | LInstruction* result = |
| 1032 | DefineAsRegister(new (zone()) LMathAbs(context, input)); |
| 1033 | if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result); |
| 1034 | if (!r.IsDouble()) result = AssignEnvironment(result); |
| 1035 | return result; |
| 1036 | } |
| 1037 | |
| 1038 | LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) { |
| 1039 | DCHECK(instr->representation().IsDouble()); |
| 1040 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1041 | LOperand* input = UseFixedDouble(instr->value(), d0); |
| 1042 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathLog(input), d0), instr); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1043 | } |
| 1044 | |
| 1045 | LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) { |
| 1046 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1047 | LMathClz32* result = new (zone()) LMathClz32(input); |
| 1048 | return DefineAsRegister(result); |
| 1049 | } |
| 1050 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1051 | LInstruction* LChunkBuilder::DoMathCos(HUnaryMathOperation* instr) { |
| 1052 | DCHECK(instr->representation().IsDouble()); |
| 1053 | DCHECK(instr->value()->representation().IsDouble()); |
| 1054 | LOperand* input = UseFixedDouble(instr->value(), d0); |
| 1055 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathCos(input), d0), instr); |
| 1056 | } |
| 1057 | |
| 1058 | LInstruction* LChunkBuilder::DoMathSin(HUnaryMathOperation* instr) { |
| 1059 | DCHECK(instr->representation().IsDouble()); |
| 1060 | DCHECK(instr->value()->representation().IsDouble()); |
| 1061 | LOperand* input = UseFixedDouble(instr->value(), d0); |
| 1062 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathSin(input), d0), instr); |
| 1063 | } |
| 1064 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1065 | LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) { |
| 1066 | DCHECK(instr->representation().IsDouble()); |
| 1067 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1068 | LOperand* input = UseFixedDouble(instr->value(), d0); |
| 1069 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathExp(input), d0), instr); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1070 | } |
| 1071 | |
| 1072 | LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) { |
| 1073 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1074 | LMathSqrt* result = new (zone()) LMathSqrt(input); |
| 1075 | return DefineAsRegister(result); |
| 1076 | } |
| 1077 | |
| 1078 | LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) { |
| 1079 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1080 | LMathPowHalf* result = new (zone()) LMathPowHalf(input); |
| 1081 | return DefineAsRegister(result); |
| 1082 | } |
| 1083 | |
| 1084 | LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) { |
| 1085 | LOperand* context = UseFixed(instr->context(), cp); |
| 1086 | LOperand* constructor = UseFixed(instr->constructor(), r3); |
| 1087 | LCallNewArray* result = new (zone()) LCallNewArray(context, constructor); |
| 1088 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 1089 | } |
| 1090 | |
| 1091 | LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) { |
| 1092 | LOperand* context = UseFixed(instr->context(), cp); |
| 1093 | return MarkAsCall(DefineFixed(new (zone()) LCallRuntime(context), r2), instr); |
| 1094 | } |
| 1095 | |
| 1096 | LInstruction* LChunkBuilder::DoRor(HRor* instr) { |
| 1097 | return DoShift(Token::ROR, instr); |
| 1098 | } |
| 1099 | |
| 1100 | LInstruction* LChunkBuilder::DoShr(HShr* instr) { |
| 1101 | return DoShift(Token::SHR, instr); |
| 1102 | } |
| 1103 | |
| 1104 | LInstruction* LChunkBuilder::DoSar(HSar* instr) { |
| 1105 | return DoShift(Token::SAR, instr); |
| 1106 | } |
| 1107 | |
| 1108 | LInstruction* LChunkBuilder::DoShl(HShl* instr) { |
| 1109 | return DoShift(Token::SHL, instr); |
| 1110 | } |
| 1111 | |
| 1112 | LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) { |
| 1113 | if (instr->representation().IsSmiOrInteger32()) { |
| 1114 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1115 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1116 | DCHECK(instr->CheckFlag(HValue::kTruncatingToInt32)); |
| 1117 | |
| 1118 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1119 | LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1120 | return DefineAsRegister(new (zone()) LBitI(left, right)); |
| 1121 | } else { |
| 1122 | return DoArithmeticT(instr->op(), instr); |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) { |
| 1127 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1128 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1129 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1130 | LOperand* dividend = UseRegister(instr->left()); |
| 1131 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1132 | LInstruction* result = |
| 1133 | DefineAsRegister(new (zone()) LDivByPowerOf2I(dividend, divisor)); |
| 1134 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1135 | (instr->CheckFlag(HValue::kCanOverflow) && divisor == -1) || |
| 1136 | (!instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) && |
| 1137 | divisor != 1 && divisor != -1)) { |
| 1138 | result = AssignEnvironment(result); |
| 1139 | } |
| 1140 | return result; |
| 1141 | } |
| 1142 | |
| 1143 | LInstruction* LChunkBuilder::DoDivByConstI(HDiv* instr) { |
| 1144 | DCHECK(instr->representation().IsInteger32()); |
| 1145 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1146 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1147 | LOperand* dividend = UseRegister(instr->left()); |
| 1148 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1149 | LInstruction* result = |
| 1150 | DefineAsRegister(new (zone()) LDivByConstI(dividend, divisor)); |
| 1151 | if (divisor == 0 || |
| 1152 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1153 | !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| 1154 | result = AssignEnvironment(result); |
| 1155 | } |
| 1156 | return result; |
| 1157 | } |
| 1158 | |
| 1159 | LInstruction* LChunkBuilder::DoDivI(HDiv* instr) { |
| 1160 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1161 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1162 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1163 | LOperand* dividend = UseRegister(instr->left()); |
| 1164 | LOperand* divisor = UseRegister(instr->right()); |
| 1165 | LInstruction* result = |
| 1166 | DefineAsRegister(new (zone()) LDivI(dividend, divisor)); |
| 1167 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1168 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1169 | (instr->CheckFlag(HValue::kCanOverflow) && |
| 1170 | !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32)) || |
| 1171 | (!instr->IsMathFloorOfDiv() && |
| 1172 | !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32))) { |
| 1173 | result = AssignEnvironment(result); |
| 1174 | } |
| 1175 | return result; |
| 1176 | } |
| 1177 | |
| 1178 | LInstruction* LChunkBuilder::DoDiv(HDiv* instr) { |
| 1179 | if (instr->representation().IsSmiOrInteger32()) { |
| 1180 | if (instr->RightIsPowerOf2()) { |
| 1181 | return DoDivByPowerOf2I(instr); |
| 1182 | } else if (instr->right()->IsConstant()) { |
| 1183 | return DoDivByConstI(instr); |
| 1184 | } else { |
| 1185 | return DoDivI(instr); |
| 1186 | } |
| 1187 | } else if (instr->representation().IsDouble()) { |
| 1188 | return DoArithmeticD(Token::DIV, instr); |
| 1189 | } else { |
| 1190 | return DoArithmeticT(Token::DIV, instr); |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) { |
| 1195 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1196 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1197 | LInstruction* result = |
| 1198 | DefineAsRegister(new (zone()) LFlooringDivByPowerOf2I(dividend, divisor)); |
| 1199 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1200 | (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) { |
| 1201 | result = AssignEnvironment(result); |
| 1202 | } |
| 1203 | return result; |
| 1204 | } |
| 1205 | |
| 1206 | LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) { |
| 1207 | DCHECK(instr->representation().IsInteger32()); |
| 1208 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1209 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1210 | LOperand* dividend = UseRegister(instr->left()); |
| 1211 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1212 | LOperand* temp = |
| 1213 | ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) || |
| 1214 | (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) |
| 1215 | ? NULL |
| 1216 | : TempRegister(); |
| 1217 | LInstruction* result = DefineAsRegister( |
| 1218 | new (zone()) LFlooringDivByConstI(dividend, divisor, temp)); |
| 1219 | if (divisor == 0 || |
| 1220 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) { |
| 1221 | result = AssignEnvironment(result); |
| 1222 | } |
| 1223 | return result; |
| 1224 | } |
| 1225 | |
| 1226 | LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) { |
| 1227 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1228 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1229 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1230 | LOperand* dividend = UseRegister(instr->left()); |
| 1231 | LOperand* divisor = UseRegister(instr->right()); |
| 1232 | LInstruction* result = |
| 1233 | DefineAsRegister(new (zone()) LFlooringDivI(dividend, divisor)); |
| 1234 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1235 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1236 | (instr->CheckFlag(HValue::kCanOverflow) && |
| 1237 | !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32))) { |
| 1238 | result = AssignEnvironment(result); |
| 1239 | } |
| 1240 | return result; |
| 1241 | } |
| 1242 | |
| 1243 | LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) { |
| 1244 | if (instr->RightIsPowerOf2()) { |
| 1245 | return DoFlooringDivByPowerOf2I(instr); |
| 1246 | } else if (instr->right()->IsConstant()) { |
| 1247 | return DoFlooringDivByConstI(instr); |
| 1248 | } else { |
| 1249 | return DoFlooringDivI(instr); |
| 1250 | } |
| 1251 | } |
| 1252 | |
| 1253 | LInstruction* LChunkBuilder::DoModByPowerOf2I(HMod* instr) { |
| 1254 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1255 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1256 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1257 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1258 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1259 | LInstruction* result = |
| 1260 | DefineSameAsFirst(new (zone()) LModByPowerOf2I(dividend, divisor)); |
| 1261 | if (instr->CheckFlag(HValue::kLeftCanBeNegative) && |
| 1262 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1263 | result = AssignEnvironment(result); |
| 1264 | } |
| 1265 | return result; |
| 1266 | } |
| 1267 | |
| 1268 | LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) { |
| 1269 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1270 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1271 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1272 | LOperand* dividend = UseRegister(instr->left()); |
| 1273 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1274 | LInstruction* result = |
| 1275 | DefineAsRegister(new (zone()) LModByConstI(dividend, divisor)); |
| 1276 | if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1277 | result = AssignEnvironment(result); |
| 1278 | } |
| 1279 | return result; |
| 1280 | } |
| 1281 | |
| 1282 | LInstruction* LChunkBuilder::DoModI(HMod* instr) { |
| 1283 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1284 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1285 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1286 | LOperand* dividend = UseRegister(instr->left()); |
| 1287 | LOperand* divisor = UseRegister(instr->right()); |
| 1288 | LInstruction* result = |
| 1289 | DefineAsRegister(new (zone()) LModI(dividend, divisor)); |
| 1290 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1291 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1292 | result = AssignEnvironment(result); |
| 1293 | } |
| 1294 | return result; |
| 1295 | } |
| 1296 | |
| 1297 | LInstruction* LChunkBuilder::DoMod(HMod* instr) { |
| 1298 | if (instr->representation().IsSmiOrInteger32()) { |
| 1299 | if (instr->RightIsPowerOf2()) { |
| 1300 | return DoModByPowerOf2I(instr); |
| 1301 | } else if (instr->right()->IsConstant()) { |
| 1302 | return DoModByConstI(instr); |
| 1303 | } else { |
| 1304 | return DoModI(instr); |
| 1305 | } |
| 1306 | } else if (instr->representation().IsDouble()) { |
| 1307 | return DoArithmeticD(Token::MOD, instr); |
| 1308 | } else { |
| 1309 | return DoArithmeticT(Token::MOD, instr); |
| 1310 | } |
| 1311 | } |
| 1312 | |
| 1313 | LInstruction* LChunkBuilder::DoMul(HMul* instr) { |
| 1314 | if (instr->representation().IsSmiOrInteger32()) { |
| 1315 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1316 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1317 | HValue* left = instr->BetterLeftOperand(); |
| 1318 | HValue* right = instr->BetterRightOperand(); |
| 1319 | LOperand* left_op; |
| 1320 | LOperand* right_op; |
| 1321 | bool can_overflow = instr->CheckFlag(HValue::kCanOverflow); |
| 1322 | bool bailout_on_minus_zero = instr->CheckFlag(HValue::kBailoutOnMinusZero); |
| 1323 | |
| 1324 | int32_t constant_value = 0; |
| 1325 | if (right->IsConstant()) { |
| 1326 | HConstant* constant = HConstant::cast(right); |
| 1327 | constant_value = constant->Integer32Value(); |
| 1328 | // Constants -1, 0 and 1 can be optimized if the result can overflow. |
| 1329 | // For other constants, it can be optimized only without overflow. |
| 1330 | if (!can_overflow || ((constant_value >= -1) && (constant_value <= 1))) { |
| 1331 | left_op = UseRegisterAtStart(left); |
| 1332 | right_op = UseConstant(right); |
| 1333 | } else { |
| 1334 | if (bailout_on_minus_zero) { |
| 1335 | left_op = UseRegister(left); |
| 1336 | } else { |
| 1337 | left_op = UseRegisterAtStart(left); |
| 1338 | } |
| 1339 | right_op = UseRegister(right); |
| 1340 | } |
| 1341 | } else { |
| 1342 | if (bailout_on_minus_zero) { |
| 1343 | left_op = UseRegister(left); |
| 1344 | } else { |
| 1345 | left_op = UseRegisterAtStart(left); |
| 1346 | } |
| 1347 | right_op = UseRegister(right); |
| 1348 | } |
| 1349 | LMulI* mul = new (zone()) LMulI(left_op, right_op); |
| 1350 | if (right_op->IsConstantOperand() |
| 1351 | ? ((can_overflow && constant_value == -1) || |
| 1352 | (bailout_on_minus_zero && constant_value <= 0)) |
| 1353 | : (can_overflow || bailout_on_minus_zero)) { |
| 1354 | AssignEnvironment(mul); |
| 1355 | } |
| 1356 | return DefineAsRegister(mul); |
| 1357 | |
| 1358 | } else if (instr->representation().IsDouble()) { |
| 1359 | return DoArithmeticD(Token::MUL, instr); |
| 1360 | } else { |
| 1361 | return DoArithmeticT(Token::MUL, instr); |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | LInstruction* LChunkBuilder::DoSub(HSub* instr) { |
| 1366 | if (instr->representation().IsSmiOrInteger32()) { |
| 1367 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1368 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1369 | |
| 1370 | if (instr->left()->IsConstant() && |
| 1371 | !instr->CheckFlag(HValue::kCanOverflow)) { |
| 1372 | // If lhs is constant, do reverse subtraction instead. |
| 1373 | return DoRSub(instr); |
| 1374 | } |
| 1375 | |
| 1376 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1377 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1378 | LSubI* sub = new (zone()) LSubI(left, right); |
| 1379 | LInstruction* result = DefineAsRegister(sub); |
| 1380 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1381 | result = AssignEnvironment(result); |
| 1382 | } |
| 1383 | return result; |
| 1384 | } else if (instr->representation().IsDouble()) { |
| 1385 | return DoArithmeticD(Token::SUB, instr); |
| 1386 | } else { |
| 1387 | return DoArithmeticT(Token::SUB, instr); |
| 1388 | } |
| 1389 | } |
| 1390 | |
| 1391 | LInstruction* LChunkBuilder::DoRSub(HSub* instr) { |
| 1392 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1393 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1394 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1395 | DCHECK(!instr->CheckFlag(HValue::kCanOverflow)); |
| 1396 | |
| 1397 | // Note: The lhs of the subtraction becomes the rhs of the |
| 1398 | // reverse-subtraction. |
| 1399 | LOperand* left = UseRegisterAtStart(instr->right()); |
| 1400 | LOperand* right = UseOrConstantAtStart(instr->left()); |
| 1401 | LRSubI* rsb = new (zone()) LRSubI(left, right); |
| 1402 | LInstruction* result = DefineAsRegister(rsb); |
| 1403 | return result; |
| 1404 | } |
| 1405 | |
| 1406 | LInstruction* LChunkBuilder::DoMultiplyAdd(HMul* mul, HValue* addend) { |
| 1407 | LOperand* multiplier_op = UseRegister(mul->left()); |
| 1408 | LOperand* multiplicand_op = UseRegister(mul->right()); |
| 1409 | LOperand* addend_op = UseRegister(addend); |
| 1410 | return DefineAsRegister( |
| 1411 | new (zone()) LMultiplyAddD(addend_op, multiplier_op, multiplicand_op)); |
| 1412 | } |
| 1413 | |
| 1414 | LInstruction* LChunkBuilder::DoMultiplySub(HValue* minuend, HMul* mul) { |
| 1415 | LOperand* minuend_op = UseRegister(minuend); |
| 1416 | LOperand* multiplier_op = UseRegister(mul->left()); |
| 1417 | LOperand* multiplicand_op = UseRegister(mul->right()); |
| 1418 | |
| 1419 | return DefineAsRegister( |
| 1420 | new (zone()) LMultiplySubD(minuend_op, multiplier_op, multiplicand_op)); |
| 1421 | } |
| 1422 | |
| 1423 | LInstruction* LChunkBuilder::DoAdd(HAdd* instr) { |
| 1424 | if (instr->representation().IsSmiOrInteger32()) { |
| 1425 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1426 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1427 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1428 | LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1429 | LAddI* add = new (zone()) LAddI(left, right); |
| 1430 | LInstruction* result = DefineAsRegister(add); |
| 1431 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1432 | result = AssignEnvironment(result); |
| 1433 | } |
| 1434 | return result; |
| 1435 | } else if (instr->representation().IsExternal()) { |
| 1436 | DCHECK(instr->IsConsistentExternalRepresentation()); |
| 1437 | DCHECK(!instr->CheckFlag(HValue::kCanOverflow)); |
| 1438 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1439 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1440 | LAddI* add = new (zone()) LAddI(left, right); |
| 1441 | LInstruction* result = DefineAsRegister(add); |
| 1442 | return result; |
| 1443 | } else if (instr->representation().IsDouble()) { |
| 1444 | return DoArithmeticD(Token::ADD, instr); |
| 1445 | } else { |
| 1446 | return DoArithmeticT(Token::ADD, instr); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) { |
| 1451 | LOperand* left = NULL; |
| 1452 | LOperand* right = NULL; |
| 1453 | if (instr->representation().IsSmiOrInteger32()) { |
| 1454 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1455 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1456 | left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1457 | right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1458 | } else { |
| 1459 | DCHECK(instr->representation().IsDouble()); |
| 1460 | DCHECK(instr->left()->representation().IsDouble()); |
| 1461 | DCHECK(instr->right()->representation().IsDouble()); |
| 1462 | left = UseRegister(instr->left()); |
| 1463 | right = UseRegister(instr->right()); |
| 1464 | } |
| 1465 | return DefineAsRegister(new (zone()) LMathMinMax(left, right)); |
| 1466 | } |
| 1467 | |
| 1468 | LInstruction* LChunkBuilder::DoPower(HPower* instr) { |
| 1469 | DCHECK(instr->representation().IsDouble()); |
| 1470 | // We call a C function for double power. It can't trigger a GC. |
| 1471 | // We need to use fixed result register for the call. |
| 1472 | Representation exponent_type = instr->right()->representation(); |
| 1473 | DCHECK(instr->left()->representation().IsDouble()); |
| 1474 | LOperand* left = UseFixedDouble(instr->left(), d1); |
| 1475 | LOperand* right = exponent_type.IsDouble() |
| 1476 | ? UseFixedDouble(instr->right(), d2) |
| 1477 | : UseFixed(instr->right(), r4); |
| 1478 | LPower* result = new (zone()) LPower(left, right); |
| 1479 | return MarkAsCall(DefineFixedDouble(result, d3), instr, |
| 1480 | CAN_DEOPTIMIZE_EAGERLY); |
| 1481 | } |
| 1482 | |
| 1483 | LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) { |
| 1484 | DCHECK(instr->left()->representation().IsTagged()); |
| 1485 | DCHECK(instr->right()->representation().IsTagged()); |
| 1486 | LOperand* context = UseFixed(instr->context(), cp); |
| 1487 | LOperand* left = UseFixed(instr->left(), r3); |
| 1488 | LOperand* right = UseFixed(instr->right(), r2); |
| 1489 | LCmpT* result = new (zone()) LCmpT(context, left, right); |
| 1490 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 1491 | } |
| 1492 | |
| 1493 | LInstruction* LChunkBuilder::DoCompareNumericAndBranch( |
| 1494 | HCompareNumericAndBranch* instr) { |
| 1495 | Representation r = instr->representation(); |
| 1496 | if (r.IsSmiOrInteger32()) { |
| 1497 | DCHECK(instr->left()->representation().Equals(r)); |
| 1498 | DCHECK(instr->right()->representation().Equals(r)); |
| 1499 | LOperand* left = UseRegisterOrConstantAtStart(instr->left()); |
| 1500 | LOperand* right = UseRegisterOrConstantAtStart(instr->right()); |
| 1501 | return new (zone()) LCompareNumericAndBranch(left, right); |
| 1502 | } else { |
| 1503 | DCHECK(r.IsDouble()); |
| 1504 | DCHECK(instr->left()->representation().IsDouble()); |
| 1505 | DCHECK(instr->right()->representation().IsDouble()); |
| 1506 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1507 | LOperand* right = UseRegisterAtStart(instr->right()); |
| 1508 | return new (zone()) LCompareNumericAndBranch(left, right); |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch( |
| 1513 | HCompareObjectEqAndBranch* instr) { |
| 1514 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1515 | LOperand* right = UseRegisterAtStart(instr->right()); |
| 1516 | return new (zone()) LCmpObjectEqAndBranch(left, right); |
| 1517 | } |
| 1518 | |
| 1519 | LInstruction* LChunkBuilder::DoCompareHoleAndBranch( |
| 1520 | HCompareHoleAndBranch* instr) { |
| 1521 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1522 | return new (zone()) LCmpHoleAndBranch(value); |
| 1523 | } |
| 1524 | |
| 1525 | LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) { |
| 1526 | DCHECK(instr->value()->representation().IsTagged()); |
| 1527 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1528 | LOperand* temp = TempRegister(); |
| 1529 | return new (zone()) LIsStringAndBranch(value, temp); |
| 1530 | } |
| 1531 | |
| 1532 | LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) { |
| 1533 | DCHECK(instr->value()->representation().IsTagged()); |
| 1534 | return new (zone()) LIsSmiAndBranch(Use(instr->value())); |
| 1535 | } |
| 1536 | |
| 1537 | LInstruction* LChunkBuilder::DoIsUndetectableAndBranch( |
| 1538 | HIsUndetectableAndBranch* instr) { |
| 1539 | DCHECK(instr->value()->representation().IsTagged()); |
| 1540 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1541 | return new (zone()) LIsUndetectableAndBranch(value, TempRegister()); |
| 1542 | } |
| 1543 | |
| 1544 | LInstruction* LChunkBuilder::DoStringCompareAndBranch( |
| 1545 | HStringCompareAndBranch* instr) { |
| 1546 | DCHECK(instr->left()->representation().IsTagged()); |
| 1547 | DCHECK(instr->right()->representation().IsTagged()); |
| 1548 | LOperand* context = UseFixed(instr->context(), cp); |
| 1549 | LOperand* left = UseFixed(instr->left(), r3); |
| 1550 | LOperand* right = UseFixed(instr->right(), r2); |
| 1551 | LStringCompareAndBranch* result = |
| 1552 | new (zone()) LStringCompareAndBranch(context, left, right); |
| 1553 | return MarkAsCall(result, instr); |
| 1554 | } |
| 1555 | |
| 1556 | LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch( |
| 1557 | HHasInstanceTypeAndBranch* instr) { |
| 1558 | DCHECK(instr->value()->representation().IsTagged()); |
| 1559 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1560 | return new (zone()) LHasInstanceTypeAndBranch(value); |
| 1561 | } |
| 1562 | |
| 1563 | LInstruction* LChunkBuilder::DoGetCachedArrayIndex( |
| 1564 | HGetCachedArrayIndex* instr) { |
| 1565 | DCHECK(instr->value()->representation().IsTagged()); |
| 1566 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1567 | |
| 1568 | return DefineAsRegister(new (zone()) LGetCachedArrayIndex(value)); |
| 1569 | } |
| 1570 | |
| 1571 | LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch( |
| 1572 | HHasCachedArrayIndexAndBranch* instr) { |
| 1573 | DCHECK(instr->value()->representation().IsTagged()); |
| 1574 | return new (zone()) |
| 1575 | LHasCachedArrayIndexAndBranch(UseRegisterAtStart(instr->value())); |
| 1576 | } |
| 1577 | |
| 1578 | LInstruction* LChunkBuilder::DoClassOfTestAndBranch( |
| 1579 | HClassOfTestAndBranch* instr) { |
| 1580 | DCHECK(instr->value()->representation().IsTagged()); |
| 1581 | LOperand* value = UseRegister(instr->value()); |
| 1582 | return new (zone()) LClassOfTestAndBranch(value, TempRegister()); |
| 1583 | } |
| 1584 | |
| 1585 | LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) { |
| 1586 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1587 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1588 | return DefineAsRegister(new (zone()) LSeqStringGetChar(string, index)); |
| 1589 | } |
| 1590 | |
| 1591 | LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) { |
| 1592 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1593 | LOperand* index = FLAG_debug_code |
| 1594 | ? UseRegisterAtStart(instr->index()) |
| 1595 | : UseRegisterOrConstantAtStart(instr->index()); |
| 1596 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1597 | LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), cp) : NULL; |
| 1598 | return new (zone()) LSeqStringSetChar(context, string, index, value); |
| 1599 | } |
| 1600 | |
| 1601 | LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { |
| 1602 | if (!FLAG_debug_code && instr->skip_check()) return NULL; |
| 1603 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1604 | LOperand* length = !index->IsConstantOperand() |
| 1605 | ? UseRegisterOrConstantAtStart(instr->length()) |
| 1606 | : UseRegisterAtStart(instr->length()); |
| 1607 | LInstruction* result = new (zone()) LBoundsCheck(index, length); |
| 1608 | if (!FLAG_debug_code || !instr->skip_check()) { |
| 1609 | result = AssignEnvironment(result); |
| 1610 | } |
| 1611 | return result; |
| 1612 | } |
| 1613 | |
| 1614 | LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) { |
| 1615 | // The control instruction marking the end of a block that completed |
| 1616 | // abruptly (e.g., threw an exception). There is nothing specific to do. |
| 1617 | return NULL; |
| 1618 | } |
| 1619 | |
| 1620 | LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) { return NULL; } |
| 1621 | |
| 1622 | LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) { |
| 1623 | // All HForceRepresentation instructions should be eliminated in the |
| 1624 | // representation change phase of Hydrogen. |
| 1625 | UNREACHABLE(); |
| 1626 | return NULL; |
| 1627 | } |
| 1628 | |
| 1629 | LInstruction* LChunkBuilder::DoChange(HChange* instr) { |
| 1630 | Representation from = instr->from(); |
| 1631 | Representation to = instr->to(); |
| 1632 | HValue* val = instr->value(); |
| 1633 | if (from.IsSmi()) { |
| 1634 | if (to.IsTagged()) { |
| 1635 | LOperand* value = UseRegister(val); |
| 1636 | return DefineSameAsFirst(new (zone()) LDummyUse(value)); |
| 1637 | } |
| 1638 | from = Representation::Tagged(); |
| 1639 | } |
| 1640 | if (from.IsTagged()) { |
| 1641 | if (to.IsDouble()) { |
| 1642 | LOperand* value = UseRegister(val); |
| 1643 | LInstruction* result = |
| 1644 | DefineAsRegister(new (zone()) LNumberUntagD(value)); |
| 1645 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1646 | return result; |
| 1647 | } else if (to.IsSmi()) { |
| 1648 | LOperand* value = UseRegister(val); |
| 1649 | if (val->type().IsSmi()) { |
| 1650 | return DefineSameAsFirst(new (zone()) LDummyUse(value)); |
| 1651 | } |
| 1652 | return AssignEnvironment( |
| 1653 | DefineSameAsFirst(new (zone()) LCheckSmi(value))); |
| 1654 | } else { |
| 1655 | DCHECK(to.IsInteger32()); |
| 1656 | if (val->type().IsSmi() || val->representation().IsSmi()) { |
| 1657 | LOperand* value = UseRegisterAtStart(val); |
| 1658 | return DefineAsRegister(new (zone()) LSmiUntag(value, false)); |
| 1659 | } else { |
| 1660 | LOperand* value = UseRegister(val); |
| 1661 | LOperand* temp1 = TempRegister(); |
| 1662 | LOperand* temp2 = TempDoubleRegister(); |
| 1663 | LInstruction* result = |
| 1664 | DefineSameAsFirst(new (zone()) LTaggedToI(value, temp1, temp2)); |
| 1665 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1666 | return result; |
| 1667 | } |
| 1668 | } |
| 1669 | } else if (from.IsDouble()) { |
| 1670 | if (to.IsTagged()) { |
| 1671 | info()->MarkAsDeferredCalling(); |
| 1672 | LOperand* value = UseRegister(val); |
| 1673 | LOperand* temp1 = TempRegister(); |
| 1674 | LOperand* temp2 = TempRegister(); |
| 1675 | LUnallocated* result_temp = TempRegister(); |
| 1676 | LNumberTagD* result = new (zone()) LNumberTagD(value, temp1, temp2); |
| 1677 | return AssignPointerMap(Define(result, result_temp)); |
| 1678 | } else if (to.IsSmi()) { |
| 1679 | LOperand* value = UseRegister(val); |
| 1680 | return AssignEnvironment( |
| 1681 | DefineAsRegister(new (zone()) LDoubleToSmi(value))); |
| 1682 | } else { |
| 1683 | DCHECK(to.IsInteger32()); |
| 1684 | LOperand* value = UseRegister(val); |
| 1685 | LInstruction* result = DefineAsRegister(new (zone()) LDoubleToI(value)); |
| 1686 | if (!instr->CanTruncateToInt32()) result = AssignEnvironment(result); |
| 1687 | return result; |
| 1688 | } |
| 1689 | } else if (from.IsInteger32()) { |
| 1690 | info()->MarkAsDeferredCalling(); |
| 1691 | if (to.IsTagged()) { |
| 1692 | if (!instr->CheckFlag(HValue::kCanOverflow)) { |
| 1693 | LOperand* value = UseRegisterAtStart(val); |
| 1694 | return DefineAsRegister(new (zone()) LSmiTag(value)); |
| 1695 | } else if (val->CheckFlag(HInstruction::kUint32)) { |
| 1696 | LOperand* value = UseRegisterAtStart(val); |
| 1697 | LOperand* temp1 = TempRegister(); |
| 1698 | LOperand* temp2 = TempRegister(); |
| 1699 | LNumberTagU* result = new (zone()) LNumberTagU(value, temp1, temp2); |
| 1700 | return AssignPointerMap(DefineAsRegister(result)); |
| 1701 | } else { |
| 1702 | LOperand* value = UseRegisterAtStart(val); |
| 1703 | LOperand* temp1 = TempRegister(); |
| 1704 | LOperand* temp2 = TempRegister(); |
| 1705 | LNumberTagI* result = new (zone()) LNumberTagI(value, temp1, temp2); |
| 1706 | return AssignPointerMap(DefineAsRegister(result)); |
| 1707 | } |
| 1708 | } else if (to.IsSmi()) { |
| 1709 | LOperand* value = UseRegister(val); |
| 1710 | LInstruction* result = DefineAsRegister(new (zone()) LSmiTag(value)); |
| 1711 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1712 | result = AssignEnvironment(result); |
| 1713 | } |
| 1714 | return result; |
| 1715 | } else { |
| 1716 | DCHECK(to.IsDouble()); |
| 1717 | if (val->CheckFlag(HInstruction::kUint32)) { |
| 1718 | return DefineAsRegister(new (zone()) LUint32ToDouble(UseRegister(val))); |
| 1719 | } else { |
| 1720 | return DefineAsRegister(new (zone()) LInteger32ToDouble(Use(val))); |
| 1721 | } |
| 1722 | } |
| 1723 | } |
| 1724 | UNREACHABLE(); |
| 1725 | return NULL; |
| 1726 | } |
| 1727 | |
| 1728 | LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) { |
| 1729 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1730 | LInstruction* result = new (zone()) LCheckNonSmi(value); |
| 1731 | if (!instr->value()->type().IsHeapObject()) { |
| 1732 | result = AssignEnvironment(result); |
| 1733 | } |
| 1734 | return result; |
| 1735 | } |
| 1736 | |
| 1737 | LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) { |
| 1738 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1739 | return AssignEnvironment(new (zone()) LCheckSmi(value)); |
| 1740 | } |
| 1741 | |
| 1742 | LInstruction* LChunkBuilder::DoCheckArrayBufferNotNeutered( |
| 1743 | HCheckArrayBufferNotNeutered* instr) { |
| 1744 | LOperand* view = UseRegisterAtStart(instr->value()); |
| 1745 | LCheckArrayBufferNotNeutered* result = |
| 1746 | new (zone()) LCheckArrayBufferNotNeutered(view); |
| 1747 | return AssignEnvironment(result); |
| 1748 | } |
| 1749 | |
| 1750 | LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) { |
| 1751 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1752 | LInstruction* result = new (zone()) LCheckInstanceType(value); |
| 1753 | return AssignEnvironment(result); |
| 1754 | } |
| 1755 | |
| 1756 | LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) { |
| 1757 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1758 | return AssignEnvironment(new (zone()) LCheckValue(value)); |
| 1759 | } |
| 1760 | |
| 1761 | LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) { |
| 1762 | if (instr->IsStabilityCheck()) return new (zone()) LCheckMaps; |
| 1763 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1764 | LOperand* temp = TempRegister(); |
| 1765 | LInstruction* result = |
| 1766 | AssignEnvironment(new (zone()) LCheckMaps(value, temp)); |
| 1767 | if (instr->HasMigrationTarget()) { |
| 1768 | info()->MarkAsDeferredCalling(); |
| 1769 | result = AssignPointerMap(result); |
| 1770 | } |
| 1771 | return result; |
| 1772 | } |
| 1773 | |
| 1774 | LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) { |
| 1775 | HValue* value = instr->value(); |
| 1776 | Representation input_rep = value->representation(); |
| 1777 | LOperand* reg = UseRegister(value); |
| 1778 | if (input_rep.IsDouble()) { |
| 1779 | return DefineAsRegister(new (zone()) LClampDToUint8(reg)); |
| 1780 | } else if (input_rep.IsInteger32()) { |
| 1781 | return DefineAsRegister(new (zone()) LClampIToUint8(reg)); |
| 1782 | } else { |
| 1783 | DCHECK(input_rep.IsSmiOrTagged()); |
| 1784 | LClampTToUint8* result = |
| 1785 | new (zone()) LClampTToUint8(reg, TempDoubleRegister()); |
| 1786 | return AssignEnvironment(DefineAsRegister(result)); |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) { |
| 1791 | HValue* value = instr->value(); |
| 1792 | DCHECK(value->representation().IsDouble()); |
| 1793 | return DefineAsRegister(new (zone()) LDoubleBits(UseRegister(value))); |
| 1794 | } |
| 1795 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1796 | LInstruction* LChunkBuilder::DoReturn(HReturn* instr) { |
| 1797 | LOperand* context = info()->IsStub() ? UseFixed(instr->context(), cp) : NULL; |
| 1798 | LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count()); |
| 1799 | return new (zone()) |
| 1800 | LReturn(UseFixed(instr->value(), r2), context, parameter_count); |
| 1801 | } |
| 1802 | |
| 1803 | LInstruction* LChunkBuilder::DoConstant(HConstant* instr) { |
| 1804 | Representation r = instr->representation(); |
| 1805 | if (r.IsSmi()) { |
| 1806 | return DefineAsRegister(new (zone()) LConstantS); |
| 1807 | } else if (r.IsInteger32()) { |
| 1808 | return DefineAsRegister(new (zone()) LConstantI); |
| 1809 | } else if (r.IsDouble()) { |
| 1810 | return DefineAsRegister(new (zone()) LConstantD); |
| 1811 | } else if (r.IsExternal()) { |
| 1812 | return DefineAsRegister(new (zone()) LConstantE); |
| 1813 | } else if (r.IsTagged()) { |
| 1814 | return DefineAsRegister(new (zone()) LConstantT); |
| 1815 | } else { |
| 1816 | UNREACHABLE(); |
| 1817 | return NULL; |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) { |
| 1822 | LOperand* context = UseFixed(instr->context(), cp); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1823 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
| 1824 | |
| 1825 | LLoadGlobalGeneric* result = new (zone()) LLoadGlobalGeneric(context, vector); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1826 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 1827 | } |
| 1828 | |
| 1829 | LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) { |
| 1830 | LOperand* context = UseRegisterAtStart(instr->value()); |
| 1831 | LInstruction* result = |
| 1832 | DefineAsRegister(new (zone()) LLoadContextSlot(context)); |
| 1833 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 1834 | result = AssignEnvironment(result); |
| 1835 | } |
| 1836 | return result; |
| 1837 | } |
| 1838 | |
| 1839 | LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) { |
| 1840 | LOperand* context; |
| 1841 | LOperand* value; |
| 1842 | if (instr->NeedsWriteBarrier()) { |
| 1843 | context = UseTempRegister(instr->context()); |
| 1844 | value = UseTempRegister(instr->value()); |
| 1845 | } else { |
| 1846 | context = UseRegister(instr->context()); |
| 1847 | value = UseRegister(instr->value()); |
| 1848 | } |
| 1849 | LInstruction* result = new (zone()) LStoreContextSlot(context, value); |
| 1850 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 1851 | result = AssignEnvironment(result); |
| 1852 | } |
| 1853 | return result; |
| 1854 | } |
| 1855 | |
| 1856 | LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) { |
| 1857 | LOperand* obj = UseRegisterAtStart(instr->object()); |
| 1858 | return DefineAsRegister(new (zone()) LLoadNamedField(obj)); |
| 1859 | } |
| 1860 | |
| 1861 | LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) { |
| 1862 | LOperand* context = UseFixed(instr->context(), cp); |
| 1863 | LOperand* object = |
| 1864 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1865 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1866 | |
| 1867 | LInstruction* result = |
| 1868 | DefineFixed(new (zone()) LLoadNamedGeneric(context, object, vector), r2); |
| 1869 | return MarkAsCall(result, instr); |
| 1870 | } |
| 1871 | |
| 1872 | LInstruction* LChunkBuilder::DoLoadFunctionPrototype( |
| 1873 | HLoadFunctionPrototype* instr) { |
| 1874 | return AssignEnvironment(DefineAsRegister( |
| 1875 | new (zone()) LLoadFunctionPrototype(UseRegister(instr->function())))); |
| 1876 | } |
| 1877 | |
| 1878 | LInstruction* LChunkBuilder::DoLoadRoot(HLoadRoot* instr) { |
| 1879 | return DefineAsRegister(new (zone()) LLoadRoot); |
| 1880 | } |
| 1881 | |
| 1882 | LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) { |
| 1883 | DCHECK(instr->key()->representation().IsSmiOrInteger32()); |
| 1884 | ElementsKind elements_kind = instr->elements_kind(); |
| 1885 | LOperand* key = UseRegisterOrConstantAtStart(instr->key()); |
| 1886 | LInstruction* result = NULL; |
| 1887 | |
| 1888 | if (!instr->is_fixed_typed_array()) { |
| 1889 | LOperand* obj = NULL; |
| 1890 | if (instr->representation().IsDouble()) { |
| 1891 | obj = UseRegister(instr->elements()); |
| 1892 | } else { |
| 1893 | obj = UseRegisterAtStart(instr->elements()); |
| 1894 | } |
| 1895 | result = DefineAsRegister(new (zone()) LLoadKeyed(obj, key, nullptr)); |
| 1896 | } else { |
| 1897 | DCHECK((instr->representation().IsInteger32() && |
| 1898 | !IsDoubleOrFloatElementsKind(elements_kind)) || |
| 1899 | (instr->representation().IsDouble() && |
| 1900 | IsDoubleOrFloatElementsKind(elements_kind))); |
| 1901 | LOperand* backing_store = UseRegister(instr->elements()); |
| 1902 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 1903 | result = DefineAsRegister( |
| 1904 | new (zone()) LLoadKeyed(backing_store, key, backing_store_owner)); |
| 1905 | } |
| 1906 | |
| 1907 | bool needs_environment; |
| 1908 | if (instr->is_fixed_typed_array()) { |
| 1909 | // see LCodeGen::DoLoadKeyedExternalArray |
| 1910 | needs_environment = elements_kind == UINT32_ELEMENTS && |
| 1911 | !instr->CheckFlag(HInstruction::kUint32); |
| 1912 | } else { |
| 1913 | // see LCodeGen::DoLoadKeyedFixedDoubleArray and |
| 1914 | // LCodeGen::DoLoadKeyedFixedArray |
| 1915 | needs_environment = |
| 1916 | instr->RequiresHoleCheck() || |
| 1917 | (instr->hole_mode() == CONVERT_HOLE_TO_UNDEFINED && info()->IsStub()); |
| 1918 | } |
| 1919 | |
| 1920 | if (needs_environment) { |
| 1921 | result = AssignEnvironment(result); |
| 1922 | } |
| 1923 | return result; |
| 1924 | } |
| 1925 | |
| 1926 | LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) { |
| 1927 | LOperand* context = UseFixed(instr->context(), cp); |
| 1928 | LOperand* object = |
| 1929 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
| 1930 | LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1931 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1932 | |
| 1933 | LInstruction* result = DefineFixed( |
| 1934 | new (zone()) LLoadKeyedGeneric(context, object, key, vector), r2); |
| 1935 | return MarkAsCall(result, instr); |
| 1936 | } |
| 1937 | |
| 1938 | LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) { |
| 1939 | if (!instr->is_fixed_typed_array()) { |
| 1940 | DCHECK(instr->elements()->representation().IsTagged()); |
| 1941 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 1942 | LOperand* object = NULL; |
| 1943 | LOperand* key = NULL; |
| 1944 | LOperand* val = NULL; |
| 1945 | |
| 1946 | if (instr->value()->representation().IsDouble()) { |
| 1947 | object = UseRegisterAtStart(instr->elements()); |
| 1948 | val = UseRegister(instr->value()); |
| 1949 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 1950 | } else { |
| 1951 | if (needs_write_barrier) { |
| 1952 | object = UseTempRegister(instr->elements()); |
| 1953 | val = UseTempRegister(instr->value()); |
| 1954 | key = UseTempRegister(instr->key()); |
| 1955 | } else { |
| 1956 | object = UseRegisterAtStart(instr->elements()); |
| 1957 | val = UseRegisterAtStart(instr->value()); |
| 1958 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 1959 | } |
| 1960 | } |
| 1961 | |
| 1962 | return new (zone()) LStoreKeyed(object, key, val, nullptr); |
| 1963 | } |
| 1964 | |
| 1965 | DCHECK((instr->value()->representation().IsInteger32() && |
| 1966 | !IsDoubleOrFloatElementsKind(instr->elements_kind())) || |
| 1967 | (instr->value()->representation().IsDouble() && |
| 1968 | IsDoubleOrFloatElementsKind(instr->elements_kind()))); |
| 1969 | DCHECK(instr->elements()->representation().IsExternal()); |
| 1970 | LOperand* val = UseRegister(instr->value()); |
| 1971 | LOperand* key = UseRegisterOrConstantAtStart(instr->key()); |
| 1972 | LOperand* backing_store = UseRegister(instr->elements()); |
| 1973 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 1974 | return new (zone()) LStoreKeyed(backing_store, key, val, backing_store_owner); |
| 1975 | } |
| 1976 | |
| 1977 | LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) { |
| 1978 | LOperand* context = UseFixed(instr->context(), cp); |
| 1979 | LOperand* obj = |
| 1980 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 1981 | LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister()); |
| 1982 | LOperand* val = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
| 1983 | |
| 1984 | DCHECK(instr->object()->representation().IsTagged()); |
| 1985 | DCHECK(instr->key()->representation().IsTagged()); |
| 1986 | DCHECK(instr->value()->representation().IsTagged()); |
| 1987 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1988 | LOperand* slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 1989 | LOperand* vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1990 | |
| 1991 | LStoreKeyedGeneric* result = |
| 1992 | new (zone()) LStoreKeyedGeneric(context, obj, key, val, slot, vector); |
| 1993 | return MarkAsCall(result, instr); |
| 1994 | } |
| 1995 | |
| 1996 | LInstruction* LChunkBuilder::DoTransitionElementsKind( |
| 1997 | HTransitionElementsKind* instr) { |
| 1998 | if (IsSimpleMapChangeTransition(instr->from_kind(), instr->to_kind())) { |
| 1999 | LOperand* object = UseRegister(instr->object()); |
| 2000 | LOperand* new_map_reg = TempRegister(); |
| 2001 | LTransitionElementsKind* result = |
| 2002 | new (zone()) LTransitionElementsKind(object, NULL, new_map_reg); |
| 2003 | return result; |
| 2004 | } else { |
| 2005 | LOperand* object = UseFixed(instr->object(), r2); |
| 2006 | LOperand* context = UseFixed(instr->context(), cp); |
| 2007 | LTransitionElementsKind* result = |
| 2008 | new (zone()) LTransitionElementsKind(object, context, NULL); |
| 2009 | return MarkAsCall(result, instr); |
| 2010 | } |
| 2011 | } |
| 2012 | |
| 2013 | LInstruction* LChunkBuilder::DoTrapAllocationMemento( |
| 2014 | HTrapAllocationMemento* instr) { |
| 2015 | LOperand* object = UseRegister(instr->object()); |
| 2016 | LOperand* temp1 = TempRegister(); |
| 2017 | LOperand* temp2 = TempRegister(); |
| 2018 | LTrapAllocationMemento* result = |
| 2019 | new (zone()) LTrapAllocationMemento(object, temp1, temp2); |
| 2020 | return AssignEnvironment(result); |
| 2021 | } |
| 2022 | |
| 2023 | LInstruction* LChunkBuilder::DoMaybeGrowElements(HMaybeGrowElements* instr) { |
| 2024 | info()->MarkAsDeferredCalling(); |
| 2025 | LOperand* context = UseFixed(instr->context(), cp); |
| 2026 | LOperand* object = Use(instr->object()); |
| 2027 | LOperand* elements = Use(instr->elements()); |
| 2028 | LOperand* key = UseRegisterOrConstant(instr->key()); |
| 2029 | LOperand* current_capacity = UseRegisterOrConstant(instr->current_capacity()); |
| 2030 | |
| 2031 | LMaybeGrowElements* result = new (zone()) |
| 2032 | LMaybeGrowElements(context, object, elements, key, current_capacity); |
| 2033 | DefineFixed(result, r2); |
| 2034 | return AssignPointerMap(AssignEnvironment(result)); |
| 2035 | } |
| 2036 | |
| 2037 | LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) { |
| 2038 | bool is_in_object = instr->access().IsInobject(); |
| 2039 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 2040 | bool needs_write_barrier_for_map = |
| 2041 | instr->has_transition() && instr->NeedsWriteBarrierForMap(); |
| 2042 | |
| 2043 | LOperand* obj; |
| 2044 | if (needs_write_barrier) { |
| 2045 | obj = is_in_object ? UseRegister(instr->object()) |
| 2046 | : UseTempRegister(instr->object()); |
| 2047 | } else { |
| 2048 | obj = needs_write_barrier_for_map ? UseRegister(instr->object()) |
| 2049 | : UseRegisterAtStart(instr->object()); |
| 2050 | } |
| 2051 | |
| 2052 | LOperand* val; |
| 2053 | if (needs_write_barrier) { |
| 2054 | val = UseTempRegister(instr->value()); |
| 2055 | } else if (instr->field_representation().IsDouble()) { |
| 2056 | val = UseRegisterAtStart(instr->value()); |
| 2057 | } else { |
| 2058 | val = UseRegister(instr->value()); |
| 2059 | } |
| 2060 | |
| 2061 | // We need a temporary register for write barrier of the map field. |
| 2062 | LOperand* temp = needs_write_barrier_for_map ? TempRegister() : NULL; |
| 2063 | |
| 2064 | return new (zone()) LStoreNamedField(obj, val, temp); |
| 2065 | } |
| 2066 | |
| 2067 | LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) { |
| 2068 | LOperand* context = UseFixed(instr->context(), cp); |
| 2069 | LOperand* obj = |
| 2070 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 2071 | LOperand* val = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2072 | LOperand* slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 2073 | LOperand* vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2074 | LStoreNamedGeneric* result = |
| 2075 | new (zone()) LStoreNamedGeneric(context, obj, val, slot, vector); |
| 2076 | return MarkAsCall(result, instr); |
| 2077 | } |
| 2078 | |
| 2079 | LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) { |
| 2080 | LOperand* context = UseFixed(instr->context(), cp); |
| 2081 | LOperand* left = UseFixed(instr->left(), r3); |
| 2082 | LOperand* right = UseFixed(instr->right(), r2); |
| 2083 | return MarkAsCall( |
| 2084 | DefineFixed(new (zone()) LStringAdd(context, left, right), r2), instr); |
| 2085 | } |
| 2086 | |
| 2087 | LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) { |
| 2088 | LOperand* string = UseTempRegister(instr->string()); |
| 2089 | LOperand* index = UseTempRegister(instr->index()); |
| 2090 | LOperand* context = UseAny(instr->context()); |
| 2091 | LStringCharCodeAt* result = |
| 2092 | new (zone()) LStringCharCodeAt(context, string, index); |
| 2093 | return AssignPointerMap(DefineAsRegister(result)); |
| 2094 | } |
| 2095 | |
| 2096 | LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) { |
| 2097 | LOperand* char_code = UseRegister(instr->value()); |
| 2098 | LOperand* context = UseAny(instr->context()); |
| 2099 | LStringCharFromCode* result = |
| 2100 | new (zone()) LStringCharFromCode(context, char_code); |
| 2101 | return AssignPointerMap(DefineAsRegister(result)); |
| 2102 | } |
| 2103 | |
| 2104 | LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2105 | LOperand* size = UseRegisterOrConstant(instr->size()); |
| 2106 | LOperand* temp1 = TempRegister(); |
| 2107 | LOperand* temp2 = TempRegister(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2108 | if (instr->IsAllocationFolded()) { |
| 2109 | LFastAllocate* result = new (zone()) LFastAllocate(size, temp1, temp2); |
| 2110 | return DefineAsRegister(result); |
| 2111 | } else { |
| 2112 | info()->MarkAsDeferredCalling(); |
| 2113 | LOperand* context = UseAny(instr->context()); |
| 2114 | LAllocate* result = new (zone()) LAllocate(context, size, temp1, temp2); |
| 2115 | return AssignPointerMap(DefineAsRegister(result)); |
| 2116 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2117 | } |
| 2118 | |
| 2119 | LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) { |
| 2120 | DCHECK(argument_count_ == 0); |
| 2121 | allocator_->MarkAsOsrEntry(); |
| 2122 | current_block_->last_environment()->set_ast_id(instr->ast_id()); |
| 2123 | return AssignEnvironment(new (zone()) LOsrEntry); |
| 2124 | } |
| 2125 | |
| 2126 | LInstruction* LChunkBuilder::DoParameter(HParameter* instr) { |
| 2127 | LParameter* result = new (zone()) LParameter; |
| 2128 | if (instr->kind() == HParameter::STACK_PARAMETER) { |
| 2129 | int spill_index = chunk()->GetParameterStackSlot(instr->index()); |
| 2130 | return DefineAsSpilled(result, spill_index); |
| 2131 | } else { |
| 2132 | DCHECK(info()->IsStub()); |
| 2133 | CallInterfaceDescriptor descriptor = graph()->descriptor(); |
| 2134 | int index = static_cast<int>(instr->index()); |
| 2135 | Register reg = descriptor.GetRegisterParameter(index); |
| 2136 | return DefineFixed(result, reg); |
| 2137 | } |
| 2138 | } |
| 2139 | |
| 2140 | LInstruction* LChunkBuilder::DoUnknownOSRValue(HUnknownOSRValue* instr) { |
| 2141 | // Use an index that corresponds to the location in the unoptimized frame, |
| 2142 | // which the optimized frame will subsume. |
| 2143 | int env_index = instr->index(); |
| 2144 | int spill_index = 0; |
| 2145 | if (instr->environment()->is_parameter_index(env_index)) { |
| 2146 | spill_index = chunk()->GetParameterStackSlot(env_index); |
| 2147 | } else { |
| 2148 | spill_index = env_index - instr->environment()->first_local_index(); |
| 2149 | if (spill_index > LUnallocated::kMaxFixedSlotIndex) { |
| 2150 | Retry(kTooManySpillSlotsNeededForOSR); |
| 2151 | spill_index = 0; |
| 2152 | } |
| 2153 | spill_index += StandardFrameConstants::kFixedSlotCount; |
| 2154 | } |
| 2155 | return DefineAsSpilled(new (zone()) LUnknownOSRValue, spill_index); |
| 2156 | } |
| 2157 | |
| 2158 | LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) { |
| 2159 | // There are no real uses of the arguments object. |
| 2160 | // arguments.length and element access are supported directly on |
| 2161 | // stack arguments, and any real arguments object use causes a bailout. |
| 2162 | // So this value is never used. |
| 2163 | return NULL; |
| 2164 | } |
| 2165 | |
| 2166 | LInstruction* LChunkBuilder::DoCapturedObject(HCapturedObject* instr) { |
| 2167 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2168 | |
| 2169 | // There are no real uses of a captured object. |
| 2170 | return NULL; |
| 2171 | } |
| 2172 | |
| 2173 | LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) { |
| 2174 | info()->MarkAsRequiresFrame(); |
| 2175 | LOperand* args = UseRegister(instr->arguments()); |
| 2176 | LOperand* length = UseRegisterOrConstantAtStart(instr->length()); |
| 2177 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 2178 | return DefineAsRegister(new (zone()) LAccessArgumentsAt(args, length, index)); |
| 2179 | } |
| 2180 | |
| 2181 | LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) { |
| 2182 | LOperand* context = UseFixed(instr->context(), cp); |
| 2183 | LOperand* value = UseFixed(instr->value(), r5); |
| 2184 | LTypeof* result = new (zone()) LTypeof(context, value); |
| 2185 | return MarkAsCall(DefineFixed(result, r2), instr); |
| 2186 | } |
| 2187 | |
| 2188 | LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) { |
| 2189 | return new (zone()) LTypeofIsAndBranch(UseRegister(instr->value())); |
| 2190 | } |
| 2191 | |
| 2192 | LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) { |
| 2193 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2194 | return NULL; |
| 2195 | } |
| 2196 | |
| 2197 | LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { |
| 2198 | if (instr->is_function_entry()) { |
| 2199 | LOperand* context = UseFixed(instr->context(), cp); |
| 2200 | return MarkAsCall(new (zone()) LStackCheck(context), instr); |
| 2201 | } else { |
| 2202 | DCHECK(instr->is_backwards_branch()); |
| 2203 | LOperand* context = UseAny(instr->context()); |
| 2204 | return AssignEnvironment( |
| 2205 | AssignPointerMap(new (zone()) LStackCheck(context))); |
| 2206 | } |
| 2207 | } |
| 2208 | |
| 2209 | LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) { |
| 2210 | HEnvironment* outer = current_block_->last_environment(); |
| 2211 | outer->set_ast_id(instr->ReturnId()); |
| 2212 | HConstant* undefined = graph()->GetConstantUndefined(); |
| 2213 | HEnvironment* inner = outer->CopyForInlining( |
| 2214 | instr->closure(), instr->arguments_count(), instr->function(), undefined, |
| 2215 | instr->inlining_kind(), instr->syntactic_tail_call_mode()); |
| 2216 | // Only replay binding of arguments object if it wasn't removed from graph. |
| 2217 | if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) { |
| 2218 | inner->Bind(instr->arguments_var(), instr->arguments_object()); |
| 2219 | } |
| 2220 | inner->BindContext(instr->closure_context()); |
| 2221 | inner->set_entry(instr); |
| 2222 | current_block_->UpdateEnvironment(inner); |
| 2223 | chunk_->AddInlinedFunction(instr->shared()); |
| 2224 | return NULL; |
| 2225 | } |
| 2226 | |
| 2227 | LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
| 2228 | LInstruction* pop = NULL; |
| 2229 | |
| 2230 | HEnvironment* env = current_block_->last_environment(); |
| 2231 | |
| 2232 | if (env->entry()->arguments_pushed()) { |
| 2233 | int argument_count = env->arguments_environment()->parameter_count(); |
| 2234 | pop = new (zone()) LDrop(argument_count); |
| 2235 | DCHECK(instr->argument_delta() == -argument_count); |
| 2236 | } |
| 2237 | |
| 2238 | HEnvironment* outer = |
| 2239 | current_block_->last_environment()->DiscardInlined(false); |
| 2240 | current_block_->UpdateEnvironment(outer); |
| 2241 | |
| 2242 | return pop; |
| 2243 | } |
| 2244 | |
| 2245 | LInstruction* LChunkBuilder::DoForInPrepareMap(HForInPrepareMap* instr) { |
| 2246 | LOperand* context = UseFixed(instr->context(), cp); |
| 2247 | LOperand* object = UseFixed(instr->enumerable(), r2); |
| 2248 | LForInPrepareMap* result = new (zone()) LForInPrepareMap(context, object); |
| 2249 | return MarkAsCall(DefineFixed(result, r2), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 2250 | } |
| 2251 | |
| 2252 | LInstruction* LChunkBuilder::DoForInCacheArray(HForInCacheArray* instr) { |
| 2253 | LOperand* map = UseRegister(instr->map()); |
| 2254 | return AssignEnvironment( |
| 2255 | DefineAsRegister(new (zone()) LForInCacheArray(map))); |
| 2256 | } |
| 2257 | |
| 2258 | LInstruction* LChunkBuilder::DoCheckMapValue(HCheckMapValue* instr) { |
| 2259 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 2260 | LOperand* map = UseRegisterAtStart(instr->map()); |
| 2261 | return AssignEnvironment(new (zone()) LCheckMapValue(value, map)); |
| 2262 | } |
| 2263 | |
| 2264 | LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2265 | LOperand* object = UseRegister(instr->object()); |
| 2266 | LOperand* index = UseTempRegister(instr->index()); |
| 2267 | LLoadFieldByIndex* load = new (zone()) LLoadFieldByIndex(object, index); |
| 2268 | LInstruction* result = DefineSameAsFirst(load); |
| 2269 | return AssignPointerMap(result); |
| 2270 | } |
| 2271 | |
| 2272 | } // namespace internal |
| 2273 | } // namespace v8 |