Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/crankshaft/x87/lithium-x87.h" |
| 6 | |
| 7 | #include <sstream> |
| 8 | |
| 9 | #if V8_TARGET_ARCH_X87 |
| 10 | |
| 11 | #include "src/crankshaft/hydrogen-osr.h" |
| 12 | #include "src/crankshaft/lithium-inl.h" |
| 13 | #include "src/crankshaft/x87/lithium-codegen-x87.h" |
| 14 | |
| 15 | namespace v8 { |
| 16 | namespace internal { |
| 17 | |
| 18 | #define DEFINE_COMPILE(type) \ |
| 19 | void L##type::CompileToNative(LCodeGen* generator) { \ |
| 20 | generator->Do##type(this); \ |
| 21 | } |
| 22 | LITHIUM_CONCRETE_INSTRUCTION_LIST(DEFINE_COMPILE) |
| 23 | #undef DEFINE_COMPILE |
| 24 | |
| 25 | |
| 26 | #ifdef DEBUG |
| 27 | void LInstruction::VerifyCall() { |
| 28 | // Call instructions can use only fixed registers as temporaries and |
| 29 | // outputs because all registers are blocked by the calling convention. |
| 30 | // Inputs operands must use a fixed register or use-at-start policy or |
| 31 | // a non-register policy. |
| 32 | DCHECK(Output() == NULL || |
| 33 | LUnallocated::cast(Output())->HasFixedPolicy() || |
| 34 | !LUnallocated::cast(Output())->HasRegisterPolicy()); |
| 35 | for (UseIterator it(this); !it.Done(); it.Advance()) { |
| 36 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 37 | DCHECK(operand->HasFixedPolicy() || |
| 38 | operand->IsUsedAtStart()); |
| 39 | } |
| 40 | for (TempIterator it(this); !it.Done(); it.Advance()) { |
| 41 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 42 | DCHECK(operand->HasFixedPolicy() ||!operand->HasRegisterPolicy()); |
| 43 | } |
| 44 | } |
| 45 | #endif |
| 46 | |
| 47 | |
| 48 | bool LInstruction::HasDoubleRegisterResult() { |
| 49 | return HasResult() && result()->IsDoubleRegister(); |
| 50 | } |
| 51 | |
| 52 | |
| 53 | bool LInstruction::HasDoubleRegisterInput() { |
| 54 | for (int i = 0; i < InputCount(); i++) { |
| 55 | LOperand* op = InputAt(i); |
| 56 | if (op != NULL && op->IsDoubleRegister()) { |
| 57 | return true; |
| 58 | } |
| 59 | } |
| 60 | return false; |
| 61 | } |
| 62 | |
| 63 | |
| 64 | bool LInstruction::IsDoubleInput(X87Register reg, LCodeGen* cgen) { |
| 65 | for (int i = 0; i < InputCount(); i++) { |
| 66 | LOperand* op = InputAt(i); |
| 67 | if (op != NULL && op->IsDoubleRegister()) { |
| 68 | if (cgen->ToX87Register(op).is(reg)) return true; |
| 69 | } |
| 70 | } |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | |
| 75 | void LInstruction::PrintTo(StringStream* stream) { |
| 76 | stream->Add("%s ", this->Mnemonic()); |
| 77 | |
| 78 | PrintOutputOperandTo(stream); |
| 79 | |
| 80 | PrintDataTo(stream); |
| 81 | |
| 82 | if (HasEnvironment()) { |
| 83 | stream->Add(" "); |
| 84 | environment()->PrintTo(stream); |
| 85 | } |
| 86 | |
| 87 | if (HasPointerMap()) { |
| 88 | stream->Add(" "); |
| 89 | pointer_map()->PrintTo(stream); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | |
| 94 | void LInstruction::PrintDataTo(StringStream* stream) { |
| 95 | stream->Add("= "); |
| 96 | for (int i = 0; i < InputCount(); i++) { |
| 97 | if (i > 0) stream->Add(" "); |
| 98 | if (InputAt(i) == NULL) { |
| 99 | stream->Add("NULL"); |
| 100 | } else { |
| 101 | InputAt(i)->PrintTo(stream); |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | |
| 107 | void LInstruction::PrintOutputOperandTo(StringStream* stream) { |
| 108 | if (HasResult()) result()->PrintTo(stream); |
| 109 | } |
| 110 | |
| 111 | |
| 112 | void LLabel::PrintDataTo(StringStream* stream) { |
| 113 | LGap::PrintDataTo(stream); |
| 114 | LLabel* rep = replacement(); |
| 115 | if (rep != NULL) { |
| 116 | stream->Add(" Dead block replaced with B%d", rep->block_id()); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | |
| 121 | bool LGap::IsRedundant() const { |
| 122 | for (int i = 0; i < 4; i++) { |
| 123 | if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant()) { |
| 124 | return false; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | return true; |
| 129 | } |
| 130 | |
| 131 | |
| 132 | void LGap::PrintDataTo(StringStream* stream) { |
| 133 | for (int i = 0; i < 4; i++) { |
| 134 | stream->Add("("); |
| 135 | if (parallel_moves_[i] != NULL) { |
| 136 | parallel_moves_[i]->PrintDataTo(stream); |
| 137 | } |
| 138 | stream->Add(") "); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | |
| 143 | const char* LArithmeticD::Mnemonic() const { |
| 144 | switch (op()) { |
| 145 | case Token::ADD: return "add-d"; |
| 146 | case Token::SUB: return "sub-d"; |
| 147 | case Token::MUL: return "mul-d"; |
| 148 | case Token::DIV: return "div-d"; |
| 149 | case Token::MOD: return "mod-d"; |
| 150 | default: |
| 151 | UNREACHABLE(); |
| 152 | return NULL; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | |
| 157 | const char* LArithmeticT::Mnemonic() const { |
| 158 | switch (op()) { |
| 159 | case Token::ADD: return "add-t"; |
| 160 | case Token::SUB: return "sub-t"; |
| 161 | case Token::MUL: return "mul-t"; |
| 162 | case Token::MOD: return "mod-t"; |
| 163 | case Token::DIV: return "div-t"; |
| 164 | case Token::BIT_AND: return "bit-and-t"; |
| 165 | case Token::BIT_OR: return "bit-or-t"; |
| 166 | case Token::BIT_XOR: return "bit-xor-t"; |
| 167 | case Token::ROR: return "ror-t"; |
| 168 | case Token::SHL: return "sal-t"; |
| 169 | case Token::SAR: return "sar-t"; |
| 170 | case Token::SHR: return "shr-t"; |
| 171 | default: |
| 172 | UNREACHABLE(); |
| 173 | return NULL; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | |
| 178 | bool LGoto::HasInterestingComment(LCodeGen* gen) const { |
| 179 | return !gen->IsNextEmittedBlock(block_id()); |
| 180 | } |
| 181 | |
| 182 | |
| 183 | void LGoto::PrintDataTo(StringStream* stream) { |
| 184 | stream->Add("B%d", block_id()); |
| 185 | } |
| 186 | |
| 187 | |
| 188 | void LBranch::PrintDataTo(StringStream* stream) { |
| 189 | stream->Add("B%d | B%d on ", true_block_id(), false_block_id()); |
| 190 | value()->PrintTo(stream); |
| 191 | } |
| 192 | |
| 193 | |
| 194 | void LCompareNumericAndBranch::PrintDataTo(StringStream* stream) { |
| 195 | stream->Add("if "); |
| 196 | left()->PrintTo(stream); |
| 197 | stream->Add(" %s ", Token::String(op())); |
| 198 | right()->PrintTo(stream); |
| 199 | stream->Add(" then B%d else B%d", true_block_id(), false_block_id()); |
| 200 | } |
| 201 | |
| 202 | |
| 203 | void LIsStringAndBranch::PrintDataTo(StringStream* stream) { |
| 204 | stream->Add("if is_string("); |
| 205 | value()->PrintTo(stream); |
| 206 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | void LIsSmiAndBranch::PrintDataTo(StringStream* stream) { |
| 211 | stream->Add("if is_smi("); |
| 212 | value()->PrintTo(stream); |
| 213 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 214 | } |
| 215 | |
| 216 | |
| 217 | void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) { |
| 218 | stream->Add("if is_undetectable("); |
| 219 | value()->PrintTo(stream); |
| 220 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 221 | } |
| 222 | |
| 223 | |
| 224 | void LStringCompareAndBranch::PrintDataTo(StringStream* stream) { |
| 225 | stream->Add("if string_compare("); |
| 226 | left()->PrintTo(stream); |
| 227 | right()->PrintTo(stream); |
| 228 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 229 | } |
| 230 | |
| 231 | |
| 232 | void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) { |
| 233 | stream->Add("if has_instance_type("); |
| 234 | value()->PrintTo(stream); |
| 235 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) { |
| 240 | stream->Add("if has_cached_array_index("); |
| 241 | value()->PrintTo(stream); |
| 242 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 243 | } |
| 244 | |
| 245 | |
| 246 | void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) { |
| 247 | stream->Add("if class_of_test("); |
| 248 | value()->PrintTo(stream); |
| 249 | stream->Add(", \"%o\") then B%d else B%d", |
| 250 | *hydrogen()->class_name(), |
| 251 | true_block_id(), |
| 252 | false_block_id()); |
| 253 | } |
| 254 | |
| 255 | |
| 256 | void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) { |
| 257 | stream->Add("if typeof "); |
| 258 | value()->PrintTo(stream); |
| 259 | stream->Add(" == \"%s\" then B%d else B%d", |
| 260 | hydrogen()->type_literal()->ToCString().get(), |
| 261 | true_block_id(), false_block_id()); |
| 262 | } |
| 263 | |
| 264 | |
| 265 | void LStoreCodeEntry::PrintDataTo(StringStream* stream) { |
| 266 | stream->Add(" = "); |
| 267 | function()->PrintTo(stream); |
| 268 | stream->Add(".code_entry = "); |
| 269 | code_object()->PrintTo(stream); |
| 270 | } |
| 271 | |
| 272 | |
| 273 | void LInnerAllocatedObject::PrintDataTo(StringStream* stream) { |
| 274 | stream->Add(" = "); |
| 275 | base_object()->PrintTo(stream); |
| 276 | stream->Add(" + "); |
| 277 | offset()->PrintTo(stream); |
| 278 | } |
| 279 | |
| 280 | |
| 281 | void LCallFunction::PrintDataTo(StringStream* stream) { |
| 282 | context()->PrintTo(stream); |
| 283 | stream->Add(" "); |
| 284 | function()->PrintTo(stream); |
| 285 | if (hydrogen()->HasVectorAndSlot()) { |
| 286 | stream->Add(" (type-feedback-vector "); |
| 287 | temp_vector()->PrintTo(stream); |
| 288 | stream->Add(" "); |
| 289 | temp_slot()->PrintTo(stream); |
| 290 | stream->Add(")"); |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | |
| 295 | void LCallJSFunction::PrintDataTo(StringStream* stream) { |
| 296 | stream->Add("= "); |
| 297 | function()->PrintTo(stream); |
| 298 | stream->Add("#%d / ", arity()); |
| 299 | } |
| 300 | |
| 301 | |
| 302 | void LCallWithDescriptor::PrintDataTo(StringStream* stream) { |
| 303 | for (int i = 0; i < InputCount(); i++) { |
| 304 | InputAt(i)->PrintTo(stream); |
| 305 | stream->Add(" "); |
| 306 | } |
| 307 | stream->Add("#%d / ", arity()); |
| 308 | } |
| 309 | |
| 310 | |
| 311 | void LLoadContextSlot::PrintDataTo(StringStream* stream) { |
| 312 | context()->PrintTo(stream); |
| 313 | stream->Add("[%d]", slot_index()); |
| 314 | } |
| 315 | |
| 316 | |
| 317 | void LStoreContextSlot::PrintDataTo(StringStream* stream) { |
| 318 | context()->PrintTo(stream); |
| 319 | stream->Add("[%d] <- ", slot_index()); |
| 320 | value()->PrintTo(stream); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | void LInvokeFunction::PrintDataTo(StringStream* stream) { |
| 325 | stream->Add("= "); |
| 326 | context()->PrintTo(stream); |
| 327 | stream->Add(" "); |
| 328 | function()->PrintTo(stream); |
| 329 | stream->Add(" #%d / ", arity()); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | void LCallNewArray::PrintDataTo(StringStream* stream) { |
| 334 | stream->Add("= "); |
| 335 | context()->PrintTo(stream); |
| 336 | stream->Add(" "); |
| 337 | constructor()->PrintTo(stream); |
| 338 | stream->Add(" #%d / ", arity()); |
| 339 | ElementsKind kind = hydrogen()->elements_kind(); |
| 340 | stream->Add(" (%s) ", ElementsKindToString(kind)); |
| 341 | } |
| 342 | |
| 343 | |
| 344 | void LAccessArgumentsAt::PrintDataTo(StringStream* stream) { |
| 345 | arguments()->PrintTo(stream); |
| 346 | |
| 347 | stream->Add(" length "); |
| 348 | length()->PrintTo(stream); |
| 349 | |
| 350 | stream->Add(" index "); |
| 351 | index()->PrintTo(stream); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) { |
| 356 | // Skip a slot if for a double-width slot. |
| 357 | if (kind == DOUBLE_REGISTERS) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 358 | current_frame_slots_++; |
| 359 | current_frame_slots_ |= 1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 360 | num_double_slots_++; |
| 361 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 362 | return current_frame_slots_++; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | |
| 366 | LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) { |
| 367 | int index = GetNextSpillIndex(kind); |
| 368 | if (kind == DOUBLE_REGISTERS) { |
| 369 | return LDoubleStackSlot::Create(index, zone()); |
| 370 | } else { |
| 371 | DCHECK(kind == GENERAL_REGISTERS); |
| 372 | return LStackSlot::Create(index, zone()); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | |
| 377 | void LStoreNamedField::PrintDataTo(StringStream* stream) { |
| 378 | object()->PrintTo(stream); |
| 379 | std::ostringstream os; |
| 380 | os << hydrogen()->access() << " <- "; |
| 381 | stream->Add(os.str().c_str()); |
| 382 | value()->PrintTo(stream); |
| 383 | } |
| 384 | |
| 385 | |
| 386 | void LStoreNamedGeneric::PrintDataTo(StringStream* stream) { |
| 387 | object()->PrintTo(stream); |
| 388 | stream->Add("."); |
| 389 | stream->Add(String::cast(*name())->ToCString().get()); |
| 390 | stream->Add(" <- "); |
| 391 | value()->PrintTo(stream); |
| 392 | } |
| 393 | |
| 394 | |
| 395 | void LLoadKeyed::PrintDataTo(StringStream* stream) { |
| 396 | elements()->PrintTo(stream); |
| 397 | stream->Add("["); |
| 398 | key()->PrintTo(stream); |
| 399 | if (hydrogen()->IsDehoisted()) { |
| 400 | stream->Add(" + %d]", base_offset()); |
| 401 | } else { |
| 402 | stream->Add("]"); |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | |
| 407 | void LStoreKeyed::PrintDataTo(StringStream* stream) { |
| 408 | elements()->PrintTo(stream); |
| 409 | stream->Add("["); |
| 410 | key()->PrintTo(stream); |
| 411 | if (hydrogen()->IsDehoisted()) { |
| 412 | stream->Add(" + %d] <-", base_offset()); |
| 413 | } else { |
| 414 | stream->Add("] <- "); |
| 415 | } |
| 416 | |
| 417 | if (value() == NULL) { |
| 418 | DCHECK(hydrogen()->IsConstantHoleStore() && |
| 419 | hydrogen()->value()->representation().IsDouble()); |
| 420 | stream->Add("<the hole(nan)>"); |
| 421 | } else { |
| 422 | value()->PrintTo(stream); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | |
| 427 | void LStoreKeyedGeneric::PrintDataTo(StringStream* stream) { |
| 428 | object()->PrintTo(stream); |
| 429 | stream->Add("["); |
| 430 | key()->PrintTo(stream); |
| 431 | stream->Add("] <- "); |
| 432 | value()->PrintTo(stream); |
| 433 | } |
| 434 | |
| 435 | |
| 436 | void LTransitionElementsKind::PrintDataTo(StringStream* stream) { |
| 437 | object()->PrintTo(stream); |
| 438 | stream->Add(" %p -> %p", *original_map(), *transitioned_map()); |
| 439 | } |
| 440 | |
| 441 | |
| 442 | LPlatformChunk* LChunkBuilder::Build() { |
| 443 | DCHECK(is_unused()); |
| 444 | chunk_ = new(zone()) LPlatformChunk(info(), graph()); |
| 445 | LPhase phase("L_Building chunk", chunk_); |
| 446 | status_ = BUILDING; |
| 447 | |
| 448 | // Reserve the first spill slot for the state of dynamic alignment. |
| 449 | if (info()->IsOptimizing()) { |
| 450 | int alignment_state_index = chunk_->GetNextSpillIndex(GENERAL_REGISTERS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 451 | DCHECK_EQ(alignment_state_index, 4); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 452 | USE(alignment_state_index); |
| 453 | } |
| 454 | |
| 455 | // If compiling for OSR, reserve space for the unoptimized frame, |
| 456 | // which will be subsumed into this frame. |
| 457 | if (graph()->has_osr()) { |
| 458 | for (int i = graph()->osr()->UnoptimizedFrameSlots(); i > 0; i--) { |
| 459 | chunk_->GetNextSpillIndex(GENERAL_REGISTERS); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | const ZoneList<HBasicBlock*>* blocks = graph()->blocks(); |
| 464 | for (int i = 0; i < blocks->length(); i++) { |
| 465 | HBasicBlock* next = NULL; |
| 466 | if (i < blocks->length() - 1) next = blocks->at(i + 1); |
| 467 | DoBasicBlock(blocks->at(i), next); |
| 468 | if (is_aborted()) return NULL; |
| 469 | } |
| 470 | status_ = DONE; |
| 471 | return chunk_; |
| 472 | } |
| 473 | |
| 474 | |
| 475 | LUnallocated* LChunkBuilder::ToUnallocated(Register reg) { |
| 476 | return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER, reg.code()); |
| 477 | } |
| 478 | |
| 479 | |
| 480 | LUnallocated* LChunkBuilder::ToUnallocated(X87Register reg) { |
| 481 | return new (zone()) |
| 482 | LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, reg.code()); |
| 483 | } |
| 484 | |
| 485 | |
| 486 | LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) { |
| 487 | return Use(value, ToUnallocated(fixed_register)); |
| 488 | } |
| 489 | |
| 490 | |
| 491 | LOperand* LChunkBuilder::UseRegister(HValue* value) { |
| 492 | return Use(value, new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | LOperand* LChunkBuilder::UseRegisterAtStart(HValue* value) { |
| 497 | return Use(value, |
| 498 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER, |
| 499 | LUnallocated::USED_AT_START)); |
| 500 | } |
| 501 | |
| 502 | |
| 503 | LOperand* LChunkBuilder::UseTempRegister(HValue* value) { |
| 504 | return Use(value, new(zone()) LUnallocated(LUnallocated::WRITABLE_REGISTER)); |
| 505 | } |
| 506 | |
| 507 | |
| 508 | LOperand* LChunkBuilder::Use(HValue* value) { |
| 509 | return Use(value, new(zone()) LUnallocated(LUnallocated::NONE)); |
| 510 | } |
| 511 | |
| 512 | |
| 513 | LOperand* LChunkBuilder::UseAtStart(HValue* value) { |
| 514 | return Use(value, new(zone()) LUnallocated(LUnallocated::NONE, |
| 515 | LUnallocated::USED_AT_START)); |
| 516 | } |
| 517 | |
| 518 | |
| 519 | static inline bool CanBeImmediateConstant(HValue* value) { |
| 520 | return value->IsConstant() && HConstant::cast(value)->NotInNewSpace(); |
| 521 | } |
| 522 | |
| 523 | |
| 524 | LOperand* LChunkBuilder::UseOrConstant(HValue* value) { |
| 525 | return CanBeImmediateConstant(value) |
| 526 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 527 | : Use(value); |
| 528 | } |
| 529 | |
| 530 | |
| 531 | LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) { |
| 532 | return CanBeImmediateConstant(value) |
| 533 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 534 | : UseAtStart(value); |
| 535 | } |
| 536 | |
| 537 | |
| 538 | LOperand* LChunkBuilder::UseFixedOrConstant(HValue* value, |
| 539 | Register fixed_register) { |
| 540 | return CanBeImmediateConstant(value) |
| 541 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 542 | : UseFixed(value, fixed_register); |
| 543 | } |
| 544 | |
| 545 | |
| 546 | LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) { |
| 547 | return CanBeImmediateConstant(value) |
| 548 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 549 | : UseRegister(value); |
| 550 | } |
| 551 | |
| 552 | |
| 553 | LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) { |
| 554 | return CanBeImmediateConstant(value) |
| 555 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 556 | : UseRegisterAtStart(value); |
| 557 | } |
| 558 | |
| 559 | |
| 560 | LOperand* LChunkBuilder::UseConstant(HValue* value) { |
| 561 | return chunk_->DefineConstantOperand(HConstant::cast(value)); |
| 562 | } |
| 563 | |
| 564 | |
| 565 | LOperand* LChunkBuilder::UseAny(HValue* value) { |
| 566 | return value->IsConstant() |
| 567 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 568 | : Use(value, new(zone()) LUnallocated(LUnallocated::ANY)); |
| 569 | } |
| 570 | |
| 571 | |
| 572 | LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) { |
| 573 | if (value->EmitAtUses()) { |
| 574 | HInstruction* instr = HInstruction::cast(value); |
| 575 | VisitInstruction(instr); |
| 576 | } |
| 577 | operand->set_virtual_register(value->id()); |
| 578 | return operand; |
| 579 | } |
| 580 | |
| 581 | |
| 582 | LInstruction* LChunkBuilder::Define(LTemplateResultInstruction<1>* instr, |
| 583 | LUnallocated* result) { |
| 584 | result->set_virtual_register(current_instruction_->id()); |
| 585 | instr->set_result(result); |
| 586 | return instr; |
| 587 | } |
| 588 | |
| 589 | |
| 590 | LInstruction* LChunkBuilder::DefineAsRegister( |
| 591 | LTemplateResultInstruction<1>* instr) { |
| 592 | return Define(instr, |
| 593 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 594 | } |
| 595 | |
| 596 | |
| 597 | LInstruction* LChunkBuilder::DefineAsSpilled( |
| 598 | LTemplateResultInstruction<1>* instr, |
| 599 | int index) { |
| 600 | return Define(instr, |
| 601 | new(zone()) LUnallocated(LUnallocated::FIXED_SLOT, index)); |
| 602 | } |
| 603 | |
| 604 | |
| 605 | LInstruction* LChunkBuilder::DefineSameAsFirst( |
| 606 | LTemplateResultInstruction<1>* instr) { |
| 607 | return Define(instr, |
| 608 | new(zone()) LUnallocated(LUnallocated::SAME_AS_FIRST_INPUT)); |
| 609 | } |
| 610 | |
| 611 | |
| 612 | LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr, |
| 613 | Register reg) { |
| 614 | return Define(instr, ToUnallocated(reg)); |
| 615 | } |
| 616 | |
| 617 | |
| 618 | LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr, |
| 619 | X87Register reg) { |
| 620 | return Define(instr, ToUnallocated(reg)); |
| 621 | } |
| 622 | |
| 623 | |
| 624 | LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) { |
| 625 | HEnvironment* hydrogen_env = current_block_->last_environment(); |
| 626 | int argument_index_accumulator = 0; |
| 627 | ZoneList<HValue*> objects_to_materialize(0, zone()); |
| 628 | instr->set_environment(CreateEnvironment(hydrogen_env, |
| 629 | &argument_index_accumulator, |
| 630 | &objects_to_materialize)); |
| 631 | return instr; |
| 632 | } |
| 633 | |
| 634 | |
| 635 | LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr, |
| 636 | HInstruction* hinstr, |
| 637 | CanDeoptimize can_deoptimize) { |
| 638 | info()->MarkAsNonDeferredCalling(); |
| 639 | |
| 640 | #ifdef DEBUG |
| 641 | instr->VerifyCall(); |
| 642 | #endif |
| 643 | instr->MarkAsCall(); |
| 644 | instr = AssignPointerMap(instr); |
| 645 | |
| 646 | // If instruction does not have side-effects lazy deoptimization |
| 647 | // after the call will try to deoptimize to the point before the call. |
| 648 | // Thus we still need to attach environment to this call even if |
| 649 | // call sequence can not deoptimize eagerly. |
| 650 | bool needs_environment = |
| 651 | (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) || |
| 652 | !hinstr->HasObservableSideEffects(); |
| 653 | if (needs_environment && !instr->HasEnvironment()) { |
| 654 | instr = AssignEnvironment(instr); |
| 655 | // We can't really figure out if the environment is needed or not. |
| 656 | instr->environment()->set_has_been_used(); |
| 657 | } |
| 658 | |
| 659 | return instr; |
| 660 | } |
| 661 | |
| 662 | |
| 663 | LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { |
| 664 | DCHECK(!instr->HasPointerMap()); |
| 665 | instr->set_pointer_map(new(zone()) LPointerMap(zone())); |
| 666 | return instr; |
| 667 | } |
| 668 | |
| 669 | |
| 670 | LUnallocated* LChunkBuilder::TempRegister() { |
| 671 | LUnallocated* operand = |
| 672 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER); |
| 673 | int vreg = allocator_->GetVirtualRegister(); |
| 674 | if (!allocator_->AllocationOk()) { |
| 675 | Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister); |
| 676 | vreg = 0; |
| 677 | } |
| 678 | operand->set_virtual_register(vreg); |
| 679 | return operand; |
| 680 | } |
| 681 | |
| 682 | |
| 683 | LOperand* LChunkBuilder::FixedTemp(Register reg) { |
| 684 | LUnallocated* operand = ToUnallocated(reg); |
| 685 | DCHECK(operand->HasFixedPolicy()); |
| 686 | return operand; |
| 687 | } |
| 688 | |
| 689 | |
| 690 | LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) { |
| 691 | return new(zone()) LLabel(instr->block()); |
| 692 | } |
| 693 | |
| 694 | |
| 695 | LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) { |
| 696 | return DefineAsRegister(new(zone()) LDummyUse(UseAny(instr->value()))); |
| 697 | } |
| 698 | |
| 699 | |
| 700 | LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) { |
| 701 | UNREACHABLE(); |
| 702 | return NULL; |
| 703 | } |
| 704 | |
| 705 | |
| 706 | LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) { |
| 707 | return AssignEnvironment(new(zone()) LDeoptimize); |
| 708 | } |
| 709 | |
| 710 | |
| 711 | LInstruction* LChunkBuilder::DoShift(Token::Value op, |
| 712 | HBitwiseBinaryOperation* instr) { |
| 713 | if (instr->representation().IsSmiOrInteger32()) { |
| 714 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 715 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 716 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 717 | |
| 718 | HValue* right_value = instr->right(); |
| 719 | LOperand* right = NULL; |
| 720 | int constant_value = 0; |
| 721 | bool does_deopt = false; |
| 722 | if (right_value->IsConstant()) { |
| 723 | HConstant* constant = HConstant::cast(right_value); |
| 724 | right = chunk_->DefineConstantOperand(constant); |
| 725 | constant_value = constant->Integer32Value() & 0x1f; |
| 726 | // Left shifts can deoptimize if we shift by > 0 and the result cannot be |
| 727 | // truncated to smi. |
| 728 | if (instr->representation().IsSmi() && constant_value > 0) { |
| 729 | does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); |
| 730 | } |
| 731 | } else { |
| 732 | right = UseFixed(right_value, ecx); |
| 733 | } |
| 734 | |
| 735 | // Shift operations can only deoptimize if we do a logical shift by 0 and |
| 736 | // the result cannot be truncated to int32. |
| 737 | if (op == Token::SHR && constant_value == 0) { |
| 738 | does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 739 | } |
| 740 | |
| 741 | LInstruction* result = |
| 742 | DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); |
| 743 | return does_deopt ? AssignEnvironment(result) : result; |
| 744 | } else { |
| 745 | return DoArithmeticT(op, instr); |
| 746 | } |
| 747 | } |
| 748 | |
| 749 | |
| 750 | LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
| 751 | HArithmeticBinaryOperation* instr) { |
| 752 | DCHECK(instr->representation().IsDouble()); |
| 753 | DCHECK(instr->left()->representation().IsDouble()); |
| 754 | DCHECK(instr->right()->representation().IsDouble()); |
| 755 | if (op == Token::MOD) { |
| 756 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 757 | LOperand* right = UseRegisterAtStart(instr->BetterRightOperand()); |
| 758 | LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
| 759 | return MarkAsCall(DefineSameAsFirst(result), instr); |
| 760 | } else { |
| 761 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 762 | LOperand* right = UseRegisterAtStart(instr->BetterRightOperand()); |
| 763 | LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
| 764 | return DefineSameAsFirst(result); |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | |
| 769 | LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op, |
| 770 | HBinaryOperation* instr) { |
| 771 | HValue* left = instr->left(); |
| 772 | HValue* right = instr->right(); |
| 773 | DCHECK(left->representation().IsTagged()); |
| 774 | DCHECK(right->representation().IsTagged()); |
| 775 | LOperand* context = UseFixed(instr->context(), esi); |
| 776 | LOperand* left_operand = UseFixed(left, edx); |
| 777 | LOperand* right_operand = UseFixed(right, eax); |
| 778 | LArithmeticT* result = |
| 779 | new(zone()) LArithmeticT(op, context, left_operand, right_operand); |
| 780 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 781 | } |
| 782 | |
| 783 | |
| 784 | void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) { |
| 785 | DCHECK(is_building()); |
| 786 | current_block_ = block; |
| 787 | next_block_ = next_block; |
| 788 | if (block->IsStartBlock()) { |
| 789 | block->UpdateEnvironment(graph_->start_environment()); |
| 790 | argument_count_ = 0; |
| 791 | } else if (block->predecessors()->length() == 1) { |
| 792 | // We have a single predecessor => copy environment and outgoing |
| 793 | // argument count from the predecessor. |
| 794 | DCHECK(block->phis()->length() == 0); |
| 795 | HBasicBlock* pred = block->predecessors()->at(0); |
| 796 | HEnvironment* last_environment = pred->last_environment(); |
| 797 | DCHECK(last_environment != NULL); |
| 798 | // Only copy the environment, if it is later used again. |
| 799 | if (pred->end()->SecondSuccessor() == NULL) { |
| 800 | DCHECK(pred->end()->FirstSuccessor() == block); |
| 801 | } else { |
| 802 | if (pred->end()->FirstSuccessor()->block_id() > block->block_id() || |
| 803 | pred->end()->SecondSuccessor()->block_id() > block->block_id()) { |
| 804 | last_environment = last_environment->Copy(); |
| 805 | } |
| 806 | } |
| 807 | block->UpdateEnvironment(last_environment); |
| 808 | DCHECK(pred->argument_count() >= 0); |
| 809 | argument_count_ = pred->argument_count(); |
| 810 | } else { |
| 811 | // We are at a state join => process phis. |
| 812 | HBasicBlock* pred = block->predecessors()->at(0); |
| 813 | // No need to copy the environment, it cannot be used later. |
| 814 | HEnvironment* last_environment = pred->last_environment(); |
| 815 | for (int i = 0; i < block->phis()->length(); ++i) { |
| 816 | HPhi* phi = block->phis()->at(i); |
| 817 | if (phi->HasMergedIndex()) { |
| 818 | last_environment->SetValueAt(phi->merged_index(), phi); |
| 819 | } |
| 820 | } |
| 821 | for (int i = 0; i < block->deleted_phis()->length(); ++i) { |
| 822 | if (block->deleted_phis()->at(i) < last_environment->length()) { |
| 823 | last_environment->SetValueAt(block->deleted_phis()->at(i), |
| 824 | graph_->GetConstantUndefined()); |
| 825 | } |
| 826 | } |
| 827 | block->UpdateEnvironment(last_environment); |
| 828 | // Pick up the outgoing argument count of one of the predecessors. |
| 829 | argument_count_ = pred->argument_count(); |
| 830 | } |
| 831 | HInstruction* current = block->first(); |
| 832 | int start = chunk_->instructions()->length(); |
| 833 | while (current != NULL && !is_aborted()) { |
| 834 | // Code for constants in registers is generated lazily. |
| 835 | if (!current->EmitAtUses()) { |
| 836 | VisitInstruction(current); |
| 837 | } |
| 838 | current = current->next(); |
| 839 | } |
| 840 | int end = chunk_->instructions()->length() - 1; |
| 841 | if (end >= start) { |
| 842 | block->set_first_instruction_index(start); |
| 843 | block->set_last_instruction_index(end); |
| 844 | } |
| 845 | block->set_argument_count(argument_count_); |
| 846 | next_block_ = NULL; |
| 847 | current_block_ = NULL; |
| 848 | } |
| 849 | |
| 850 | |
| 851 | void LChunkBuilder::VisitInstruction(HInstruction* current) { |
| 852 | HInstruction* old_current = current_instruction_; |
| 853 | current_instruction_ = current; |
| 854 | |
| 855 | LInstruction* instr = NULL; |
| 856 | if (current->CanReplaceWithDummyUses()) { |
| 857 | if (current->OperandCount() == 0) { |
| 858 | instr = DefineAsRegister(new(zone()) LDummy()); |
| 859 | } else { |
| 860 | DCHECK(!current->OperandAt(0)->IsControlInstruction()); |
| 861 | instr = DefineAsRegister(new(zone()) |
| 862 | LDummyUse(UseAny(current->OperandAt(0)))); |
| 863 | } |
| 864 | for (int i = 1; i < current->OperandCount(); ++i) { |
| 865 | if (current->OperandAt(i)->IsControlInstruction()) continue; |
| 866 | LInstruction* dummy = |
| 867 | new(zone()) LDummyUse(UseAny(current->OperandAt(i))); |
| 868 | dummy->set_hydrogen_value(current); |
| 869 | chunk_->AddInstruction(dummy, current_block_); |
| 870 | } |
| 871 | } else { |
| 872 | HBasicBlock* successor; |
| 873 | if (current->IsControlInstruction() && |
| 874 | HControlInstruction::cast(current)->KnownSuccessorBlock(&successor) && |
| 875 | successor != NULL) { |
| 876 | // Always insert a fpu register barrier here when branch is optimized to |
| 877 | // be a direct goto. |
| 878 | // TODO(weiliang): require a better solution. |
| 879 | if (!current->IsGoto()) { |
| 880 | LClobberDoubles* clobber = new (zone()) LClobberDoubles(isolate()); |
| 881 | clobber->set_hydrogen_value(current); |
| 882 | chunk_->AddInstruction(clobber, current_block_); |
| 883 | } |
| 884 | instr = new(zone()) LGoto(successor); |
| 885 | } else { |
| 886 | instr = current->CompileToLithium(this); |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | argument_count_ += current->argument_delta(); |
| 891 | DCHECK(argument_count_ >= 0); |
| 892 | |
| 893 | if (instr != NULL) { |
| 894 | AddInstruction(instr, current); |
| 895 | } |
| 896 | |
| 897 | current_instruction_ = old_current; |
| 898 | } |
| 899 | |
| 900 | |
| 901 | void LChunkBuilder::AddInstruction(LInstruction* instr, |
| 902 | HInstruction* hydrogen_val) { |
| 903 | // Associate the hydrogen instruction first, since we may need it for |
| 904 | // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below. |
| 905 | instr->set_hydrogen_value(hydrogen_val); |
| 906 | |
| 907 | #if DEBUG |
| 908 | // Make sure that the lithium instruction has either no fixed register |
| 909 | // constraints in temps or the result OR no uses that are only used at |
| 910 | // start. If this invariant doesn't hold, the register allocator can decide |
| 911 | // to insert a split of a range immediately before the instruction due to an |
| 912 | // already allocated register needing to be used for the instruction's fixed |
| 913 | // register constraint. In this case, The register allocator won't see an |
| 914 | // interference between the split child and the use-at-start (it would if |
| 915 | // the it was just a plain use), so it is free to move the split child into |
| 916 | // the same register that is used for the use-at-start. |
| 917 | // See https://code.google.com/p/chromium/issues/detail?id=201590 |
| 918 | if (!(instr->ClobbersRegisters() && |
| 919 | instr->ClobbersDoubleRegisters(isolate()))) { |
| 920 | int fixed = 0; |
| 921 | int used_at_start = 0; |
| 922 | for (UseIterator it(instr); !it.Done(); it.Advance()) { |
| 923 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 924 | if (operand->IsUsedAtStart()) ++used_at_start; |
| 925 | } |
| 926 | if (instr->Output() != NULL) { |
| 927 | if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed; |
| 928 | } |
| 929 | for (TempIterator it(instr); !it.Done(); it.Advance()) { |
| 930 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 931 | if (operand->HasFixedPolicy()) ++fixed; |
| 932 | } |
| 933 | DCHECK(fixed == 0 || used_at_start == 0); |
| 934 | } |
| 935 | #endif |
| 936 | |
| 937 | if (FLAG_stress_pointer_maps && !instr->HasPointerMap()) { |
| 938 | instr = AssignPointerMap(instr); |
| 939 | } |
| 940 | if (FLAG_stress_environments && !instr->HasEnvironment()) { |
| 941 | instr = AssignEnvironment(instr); |
| 942 | } |
| 943 | if (instr->IsGoto() && |
| 944 | (LGoto::cast(instr)->jumps_to_join() || next_block_->is_osr_entry())) { |
| 945 | // TODO(olivf) Since phis of spilled values are joined as registers |
| 946 | // (not in the stack slot), we need to allow the goto gaps to keep one |
| 947 | // x87 register alive. To ensure all other values are still spilled, we |
| 948 | // insert a fpu register barrier right before. |
| 949 | LClobberDoubles* clobber = new(zone()) LClobberDoubles(isolate()); |
| 950 | clobber->set_hydrogen_value(hydrogen_val); |
| 951 | chunk_->AddInstruction(clobber, current_block_); |
| 952 | } |
| 953 | chunk_->AddInstruction(instr, current_block_); |
| 954 | |
| 955 | if (instr->IsCall() || instr->IsPrologue()) { |
| 956 | HValue* hydrogen_value_for_lazy_bailout = hydrogen_val; |
| 957 | if (hydrogen_val->HasObservableSideEffects()) { |
| 958 | HSimulate* sim = HSimulate::cast(hydrogen_val->next()); |
| 959 | sim->ReplayEnvironment(current_block_->last_environment()); |
| 960 | hydrogen_value_for_lazy_bailout = sim; |
| 961 | } |
| 962 | LInstruction* bailout = AssignEnvironment(new(zone()) LLazyBailout()); |
| 963 | bailout->set_hydrogen_value(hydrogen_value_for_lazy_bailout); |
| 964 | chunk_->AddInstruction(bailout, current_block_); |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | |
| 969 | LInstruction* LChunkBuilder::DoPrologue(HPrologue* instr) { |
| 970 | return new (zone()) LPrologue(); |
| 971 | } |
| 972 | |
| 973 | |
| 974 | LInstruction* LChunkBuilder::DoGoto(HGoto* instr) { |
| 975 | return new(zone()) LGoto(instr->FirstSuccessor()); |
| 976 | } |
| 977 | |
| 978 | |
| 979 | LInstruction* LChunkBuilder::DoBranch(HBranch* instr) { |
| 980 | HValue* value = instr->value(); |
| 981 | Representation r = value->representation(); |
| 982 | HType type = value->type(); |
| 983 | ToBooleanStub::Types expected = instr->expected_input_types(); |
| 984 | if (expected.IsEmpty()) expected = ToBooleanStub::Types::Generic(); |
| 985 | |
| 986 | bool easy_case = !r.IsTagged() || type.IsBoolean() || type.IsSmi() || |
| 987 | type.IsJSArray() || type.IsHeapNumber() || type.IsString(); |
| 988 | LOperand* temp = !easy_case && expected.NeedsMap() ? TempRegister() : NULL; |
| 989 | LInstruction* branch = |
| 990 | temp != NULL ? new (zone()) LBranch(UseRegister(value), temp) |
| 991 | : new (zone()) LBranch(UseRegisterAtStart(value), temp); |
| 992 | if (!easy_case && |
| 993 | ((!expected.Contains(ToBooleanStub::SMI) && expected.NeedsMap()) || |
| 994 | !expected.IsGeneric())) { |
| 995 | branch = AssignEnvironment(branch); |
| 996 | } |
| 997 | return branch; |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) { |
| 1002 | return new(zone()) LDebugBreak(); |
| 1003 | } |
| 1004 | |
| 1005 | |
| 1006 | LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) { |
| 1007 | DCHECK(instr->value()->representation().IsTagged()); |
| 1008 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1009 | return new(zone()) LCmpMapAndBranch(value); |
| 1010 | } |
| 1011 | |
| 1012 | |
| 1013 | LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* length) { |
| 1014 | info()->MarkAsRequiresFrame(); |
| 1015 | return DefineAsRegister(new(zone()) LArgumentsLength(Use(length->value()))); |
| 1016 | } |
| 1017 | |
| 1018 | |
| 1019 | LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) { |
| 1020 | info()->MarkAsRequiresFrame(); |
| 1021 | return DefineAsRegister(new(zone()) LArgumentsElements); |
| 1022 | } |
| 1023 | |
| 1024 | |
| 1025 | LInstruction* LChunkBuilder::DoInstanceOf(HInstanceOf* instr) { |
| 1026 | LOperand* left = |
| 1027 | UseFixed(instr->left(), InstanceOfDescriptor::LeftRegister()); |
| 1028 | LOperand* right = |
| 1029 | UseFixed(instr->right(), InstanceOfDescriptor::RightRegister()); |
| 1030 | LOperand* context = UseFixed(instr->context(), esi); |
| 1031 | LInstanceOf* result = new (zone()) LInstanceOf(context, left, right); |
| 1032 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 1033 | } |
| 1034 | |
| 1035 | |
| 1036 | LInstruction* LChunkBuilder::DoHasInPrototypeChainAndBranch( |
| 1037 | HHasInPrototypeChainAndBranch* instr) { |
| 1038 | LOperand* object = UseRegister(instr->object()); |
| 1039 | LOperand* prototype = UseRegister(instr->prototype()); |
| 1040 | LOperand* temp = TempRegister(); |
| 1041 | LHasInPrototypeChainAndBranch* result = |
| 1042 | new (zone()) LHasInPrototypeChainAndBranch(object, prototype, temp); |
| 1043 | return AssignEnvironment(result); |
| 1044 | } |
| 1045 | |
| 1046 | |
| 1047 | LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) { |
| 1048 | LOperand* receiver = UseRegister(instr->receiver()); |
| 1049 | LOperand* function = UseRegister(instr->function()); |
| 1050 | LOperand* temp = TempRegister(); |
| 1051 | LWrapReceiver* result = |
| 1052 | new(zone()) LWrapReceiver(receiver, function, temp); |
| 1053 | return AssignEnvironment(DefineSameAsFirst(result)); |
| 1054 | } |
| 1055 | |
| 1056 | |
| 1057 | LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) { |
| 1058 | LOperand* function = UseFixed(instr->function(), edi); |
| 1059 | LOperand* receiver = UseFixed(instr->receiver(), eax); |
| 1060 | LOperand* length = UseFixed(instr->length(), ebx); |
| 1061 | LOperand* elements = UseFixed(instr->elements(), ecx); |
| 1062 | LApplyArguments* result = new(zone()) LApplyArguments(function, |
| 1063 | receiver, |
| 1064 | length, |
| 1065 | elements); |
| 1066 | return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) { |
| 1071 | int argc = instr->OperandCount(); |
| 1072 | for (int i = 0; i < argc; ++i) { |
| 1073 | LOperand* argument = UseAny(instr->argument(i)); |
| 1074 | AddInstruction(new(zone()) LPushArgument(argument), instr); |
| 1075 | } |
| 1076 | return NULL; |
| 1077 | } |
| 1078 | |
| 1079 | |
| 1080 | LInstruction* LChunkBuilder::DoStoreCodeEntry( |
| 1081 | HStoreCodeEntry* store_code_entry) { |
| 1082 | LOperand* function = UseRegister(store_code_entry->function()); |
| 1083 | LOperand* code_object = UseTempRegister(store_code_entry->code_object()); |
| 1084 | return new(zone()) LStoreCodeEntry(function, code_object); |
| 1085 | } |
| 1086 | |
| 1087 | |
| 1088 | LInstruction* LChunkBuilder::DoInnerAllocatedObject( |
| 1089 | HInnerAllocatedObject* instr) { |
| 1090 | LOperand* base_object = UseRegisterAtStart(instr->base_object()); |
| 1091 | LOperand* offset = UseRegisterOrConstantAtStart(instr->offset()); |
| 1092 | return DefineAsRegister( |
| 1093 | new(zone()) LInnerAllocatedObject(base_object, offset)); |
| 1094 | } |
| 1095 | |
| 1096 | |
| 1097 | LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) { |
| 1098 | return instr->HasNoUses() |
| 1099 | ? NULL |
| 1100 | : DefineAsRegister(new(zone()) LThisFunction); |
| 1101 | } |
| 1102 | |
| 1103 | |
| 1104 | LInstruction* LChunkBuilder::DoContext(HContext* instr) { |
| 1105 | if (instr->HasNoUses()) return NULL; |
| 1106 | |
| 1107 | if (info()->IsStub()) { |
| 1108 | return DefineFixed(new(zone()) LContext, esi); |
| 1109 | } |
| 1110 | |
| 1111 | return DefineAsRegister(new(zone()) LContext); |
| 1112 | } |
| 1113 | |
| 1114 | |
| 1115 | LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) { |
| 1116 | LOperand* context = UseFixed(instr->context(), esi); |
| 1117 | return MarkAsCall(new(zone()) LDeclareGlobals(context), instr); |
| 1118 | } |
| 1119 | |
| 1120 | |
| 1121 | LInstruction* LChunkBuilder::DoCallJSFunction( |
| 1122 | HCallJSFunction* instr) { |
| 1123 | LOperand* function = UseFixed(instr->function(), edi); |
| 1124 | |
| 1125 | LCallJSFunction* result = new(zone()) LCallJSFunction(function); |
| 1126 | |
| 1127 | return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | LInstruction* LChunkBuilder::DoCallWithDescriptor( |
| 1132 | HCallWithDescriptor* instr) { |
| 1133 | CallInterfaceDescriptor descriptor = instr->descriptor(); |
| 1134 | LOperand* target = UseRegisterOrConstantAtStart(instr->target()); |
| 1135 | ZoneList<LOperand*> ops(instr->OperandCount(), zone()); |
| 1136 | // Target |
| 1137 | ops.Add(target, zone()); |
| 1138 | // Context |
| 1139 | LOperand* op = UseFixed(instr->OperandAt(1), esi); |
| 1140 | ops.Add(op, zone()); |
| 1141 | // Other register parameters |
| 1142 | for (int i = LCallWithDescriptor::kImplicitRegisterParameterCount; |
| 1143 | i < instr->OperandCount(); i++) { |
| 1144 | op = |
| 1145 | UseFixed(instr->OperandAt(i), |
| 1146 | descriptor.GetRegisterParameter( |
| 1147 | i - LCallWithDescriptor::kImplicitRegisterParameterCount)); |
| 1148 | ops.Add(op, zone()); |
| 1149 | } |
| 1150 | |
| 1151 | LCallWithDescriptor* result = new(zone()) LCallWithDescriptor( |
| 1152 | descriptor, ops, zone()); |
| 1153 | return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| 1154 | } |
| 1155 | |
| 1156 | |
| 1157 | LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) { |
| 1158 | LOperand* context = UseFixed(instr->context(), esi); |
| 1159 | LOperand* function = UseFixed(instr->function(), edi); |
| 1160 | LInvokeFunction* result = new(zone()) LInvokeFunction(context, function); |
| 1161 | return MarkAsCall(DefineFixed(result, eax), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| 1162 | } |
| 1163 | |
| 1164 | |
| 1165 | LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) { |
| 1166 | switch (instr->op()) { |
| 1167 | case kMathFloor: return DoMathFloor(instr); |
| 1168 | case kMathRound: return DoMathRound(instr); |
| 1169 | case kMathFround: return DoMathFround(instr); |
| 1170 | case kMathAbs: return DoMathAbs(instr); |
| 1171 | case kMathLog: return DoMathLog(instr); |
| 1172 | case kMathExp: return DoMathExp(instr); |
| 1173 | case kMathSqrt: return DoMathSqrt(instr); |
| 1174 | case kMathPowHalf: return DoMathPowHalf(instr); |
| 1175 | case kMathClz32: return DoMathClz32(instr); |
| 1176 | default: |
| 1177 | UNREACHABLE(); |
| 1178 | return NULL; |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | |
| 1183 | LInstruction* LChunkBuilder::DoMathFloor(HUnaryMathOperation* instr) { |
| 1184 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1185 | LMathFloor* result = new(zone()) LMathFloor(input); |
| 1186 | return AssignEnvironment(DefineAsRegister(result)); |
| 1187 | } |
| 1188 | |
| 1189 | |
| 1190 | LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) { |
| 1191 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1192 | LInstruction* result = DefineAsRegister(new (zone()) LMathRound(input)); |
| 1193 | return AssignEnvironment(result); |
| 1194 | } |
| 1195 | |
| 1196 | |
| 1197 | LInstruction* LChunkBuilder::DoMathFround(HUnaryMathOperation* instr) { |
| 1198 | LOperand* input = UseRegister(instr->value()); |
| 1199 | LMathFround* result = new (zone()) LMathFround(input); |
| 1200 | return DefineSameAsFirst(result); |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) { |
| 1205 | LOperand* context = UseAny(instr->context()); // Deferred use. |
| 1206 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1207 | LInstruction* result = |
| 1208 | DefineSameAsFirst(new(zone()) LMathAbs(context, input)); |
| 1209 | Representation r = instr->value()->representation(); |
| 1210 | if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result); |
| 1211 | if (!r.IsDouble()) result = AssignEnvironment(result); |
| 1212 | return result; |
| 1213 | } |
| 1214 | |
| 1215 | |
| 1216 | LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) { |
| 1217 | DCHECK(instr->representation().IsDouble()); |
| 1218 | DCHECK(instr->value()->representation().IsDouble()); |
| 1219 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1220 | return MarkAsCall(DefineSameAsFirst(new(zone()) LMathLog(input)), instr); |
| 1221 | } |
| 1222 | |
| 1223 | |
| 1224 | LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) { |
| 1225 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1226 | LMathClz32* result = new(zone()) LMathClz32(input); |
| 1227 | return DefineAsRegister(result); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) { |
| 1232 | DCHECK(instr->representation().IsDouble()); |
| 1233 | DCHECK(instr->value()->representation().IsDouble()); |
| 1234 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1235 | LOperand* temp1 = FixedTemp(ecx); |
| 1236 | LOperand* temp2 = FixedTemp(edx); |
| 1237 | LMathExp* result = new(zone()) LMathExp(value, temp1, temp2); |
| 1238 | return MarkAsCall(DefineSameAsFirst(result), instr); |
| 1239 | } |
| 1240 | |
| 1241 | |
| 1242 | LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) { |
| 1243 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1244 | LOperand* temp1 = FixedTemp(ecx); |
| 1245 | LOperand* temp2 = FixedTemp(edx); |
| 1246 | LMathSqrt* result = new(zone()) LMathSqrt(input, temp1, temp2); |
| 1247 | return MarkAsCall(DefineSameAsFirst(result), instr); |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) { |
| 1252 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1253 | LMathPowHalf* result = new (zone()) LMathPowHalf(input); |
| 1254 | return DefineSameAsFirst(result); |
| 1255 | } |
| 1256 | |
| 1257 | |
| 1258 | LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) { |
| 1259 | LOperand* context = UseFixed(instr->context(), esi); |
| 1260 | LOperand* constructor = UseFixed(instr->constructor(), edi); |
| 1261 | LCallNewArray* result = new(zone()) LCallNewArray(context, constructor); |
| 1262 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 1263 | } |
| 1264 | |
| 1265 | |
| 1266 | LInstruction* LChunkBuilder::DoCallFunction(HCallFunction* instr) { |
| 1267 | LOperand* context = UseFixed(instr->context(), esi); |
| 1268 | LOperand* function = UseFixed(instr->function(), edi); |
| 1269 | LOperand* slot = NULL; |
| 1270 | LOperand* vector = NULL; |
| 1271 | if (instr->HasVectorAndSlot()) { |
| 1272 | slot = FixedTemp(edx); |
| 1273 | vector = FixedTemp(ebx); |
| 1274 | } |
| 1275 | |
| 1276 | LCallFunction* call = |
| 1277 | new (zone()) LCallFunction(context, function, slot, vector); |
| 1278 | return MarkAsCall(DefineFixed(call, eax), instr); |
| 1279 | } |
| 1280 | |
| 1281 | |
| 1282 | LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) { |
| 1283 | LOperand* context = UseFixed(instr->context(), esi); |
| 1284 | return MarkAsCall(DefineFixed(new(zone()) LCallRuntime(context), eax), instr); |
| 1285 | } |
| 1286 | |
| 1287 | |
| 1288 | LInstruction* LChunkBuilder::DoRor(HRor* instr) { |
| 1289 | return DoShift(Token::ROR, instr); |
| 1290 | } |
| 1291 | |
| 1292 | |
| 1293 | LInstruction* LChunkBuilder::DoShr(HShr* instr) { |
| 1294 | return DoShift(Token::SHR, instr); |
| 1295 | } |
| 1296 | |
| 1297 | |
| 1298 | LInstruction* LChunkBuilder::DoSar(HSar* instr) { |
| 1299 | return DoShift(Token::SAR, instr); |
| 1300 | } |
| 1301 | |
| 1302 | |
| 1303 | LInstruction* LChunkBuilder::DoShl(HShl* instr) { |
| 1304 | return DoShift(Token::SHL, instr); |
| 1305 | } |
| 1306 | |
| 1307 | |
| 1308 | LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) { |
| 1309 | if (instr->representation().IsSmiOrInteger32()) { |
| 1310 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1311 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1312 | DCHECK(instr->CheckFlag(HValue::kTruncatingToInt32)); |
| 1313 | |
| 1314 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1315 | LOperand* right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1316 | return DefineSameAsFirst(new(zone()) LBitI(left, right)); |
| 1317 | } else { |
| 1318 | return DoArithmeticT(instr->op(), instr); |
| 1319 | } |
| 1320 | } |
| 1321 | |
| 1322 | |
| 1323 | LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) { |
| 1324 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1325 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1326 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1327 | LOperand* dividend = UseRegister(instr->left()); |
| 1328 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1329 | LInstruction* result = DefineAsRegister(new(zone()) LDivByPowerOf2I( |
| 1330 | dividend, divisor)); |
| 1331 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1332 | (instr->CheckFlag(HValue::kCanOverflow) && divisor == -1) || |
| 1333 | (!instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) && |
| 1334 | divisor != 1 && divisor != -1)) { |
| 1335 | result = AssignEnvironment(result); |
| 1336 | } |
| 1337 | return result; |
| 1338 | } |
| 1339 | |
| 1340 | |
| 1341 | LInstruction* LChunkBuilder::DoDivByConstI(HDiv* instr) { |
| 1342 | DCHECK(instr->representation().IsInteger32()); |
| 1343 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1344 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1345 | LOperand* dividend = UseRegister(instr->left()); |
| 1346 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1347 | LOperand* temp1 = FixedTemp(eax); |
| 1348 | LOperand* temp2 = FixedTemp(edx); |
| 1349 | LInstruction* result = DefineFixed(new(zone()) LDivByConstI( |
| 1350 | dividend, divisor, temp1, temp2), edx); |
| 1351 | if (divisor == 0 || |
| 1352 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1353 | !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| 1354 | result = AssignEnvironment(result); |
| 1355 | } |
| 1356 | return result; |
| 1357 | } |
| 1358 | |
| 1359 | |
| 1360 | LInstruction* LChunkBuilder::DoDivI(HDiv* instr) { |
| 1361 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1362 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1363 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1364 | LOperand* dividend = UseFixed(instr->left(), eax); |
| 1365 | LOperand* divisor = UseRegister(instr->right()); |
| 1366 | LOperand* temp = FixedTemp(edx); |
| 1367 | LInstruction* result = DefineFixed(new(zone()) LDivI( |
| 1368 | dividend, divisor, temp), eax); |
| 1369 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1370 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1371 | instr->CheckFlag(HValue::kCanOverflow) || |
| 1372 | !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32)) { |
| 1373 | result = AssignEnvironment(result); |
| 1374 | } |
| 1375 | return result; |
| 1376 | } |
| 1377 | |
| 1378 | |
| 1379 | LInstruction* LChunkBuilder::DoDiv(HDiv* instr) { |
| 1380 | if (instr->representation().IsSmiOrInteger32()) { |
| 1381 | if (instr->RightIsPowerOf2()) { |
| 1382 | return DoDivByPowerOf2I(instr); |
| 1383 | } else if (instr->right()->IsConstant()) { |
| 1384 | return DoDivByConstI(instr); |
| 1385 | } else { |
| 1386 | return DoDivI(instr); |
| 1387 | } |
| 1388 | } else if (instr->representation().IsDouble()) { |
| 1389 | return DoArithmeticD(Token::DIV, instr); |
| 1390 | } else { |
| 1391 | return DoArithmeticT(Token::DIV, instr); |
| 1392 | } |
| 1393 | } |
| 1394 | |
| 1395 | |
| 1396 | LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) { |
| 1397 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1398 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1399 | LInstruction* result = DefineSameAsFirst(new(zone()) LFlooringDivByPowerOf2I( |
| 1400 | dividend, divisor)); |
| 1401 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1402 | (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) { |
| 1403 | result = AssignEnvironment(result); |
| 1404 | } |
| 1405 | return result; |
| 1406 | } |
| 1407 | |
| 1408 | |
| 1409 | LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) { |
| 1410 | DCHECK(instr->representation().IsInteger32()); |
| 1411 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1412 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1413 | LOperand* dividend = UseRegister(instr->left()); |
| 1414 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1415 | LOperand* temp1 = FixedTemp(eax); |
| 1416 | LOperand* temp2 = FixedTemp(edx); |
| 1417 | LOperand* temp3 = |
| 1418 | ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) || |
| 1419 | (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) ? |
| 1420 | NULL : TempRegister(); |
| 1421 | LInstruction* result = |
| 1422 | DefineFixed(new(zone()) LFlooringDivByConstI(dividend, |
| 1423 | divisor, |
| 1424 | temp1, |
| 1425 | temp2, |
| 1426 | temp3), |
| 1427 | edx); |
| 1428 | if (divisor == 0 || |
| 1429 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) { |
| 1430 | result = AssignEnvironment(result); |
| 1431 | } |
| 1432 | return result; |
| 1433 | } |
| 1434 | |
| 1435 | |
| 1436 | LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) { |
| 1437 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1438 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1439 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1440 | LOperand* dividend = UseFixed(instr->left(), eax); |
| 1441 | LOperand* divisor = UseRegister(instr->right()); |
| 1442 | LOperand* temp = FixedTemp(edx); |
| 1443 | LInstruction* result = DefineFixed(new(zone()) LFlooringDivI( |
| 1444 | dividend, divisor, temp), eax); |
| 1445 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1446 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1447 | instr->CheckFlag(HValue::kCanOverflow)) { |
| 1448 | result = AssignEnvironment(result); |
| 1449 | } |
| 1450 | return result; |
| 1451 | } |
| 1452 | |
| 1453 | |
| 1454 | LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) { |
| 1455 | if (instr->RightIsPowerOf2()) { |
| 1456 | return DoFlooringDivByPowerOf2I(instr); |
| 1457 | } else if (instr->right()->IsConstant()) { |
| 1458 | return DoFlooringDivByConstI(instr); |
| 1459 | } else { |
| 1460 | return DoFlooringDivI(instr); |
| 1461 | } |
| 1462 | } |
| 1463 | |
| 1464 | |
| 1465 | LInstruction* LChunkBuilder::DoModByPowerOf2I(HMod* instr) { |
| 1466 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1467 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1468 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1469 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1470 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1471 | LInstruction* result = DefineSameAsFirst(new(zone()) LModByPowerOf2I( |
| 1472 | dividend, divisor)); |
| 1473 | if (instr->CheckFlag(HValue::kLeftCanBeNegative) && |
| 1474 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1475 | result = AssignEnvironment(result); |
| 1476 | } |
| 1477 | return result; |
| 1478 | } |
| 1479 | |
| 1480 | |
| 1481 | LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) { |
| 1482 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1483 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1484 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1485 | LOperand* dividend = UseRegister(instr->left()); |
| 1486 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1487 | LOperand* temp1 = FixedTemp(eax); |
| 1488 | LOperand* temp2 = FixedTemp(edx); |
| 1489 | LInstruction* result = DefineFixed(new(zone()) LModByConstI( |
| 1490 | dividend, divisor, temp1, temp2), eax); |
| 1491 | if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1492 | result = AssignEnvironment(result); |
| 1493 | } |
| 1494 | return result; |
| 1495 | } |
| 1496 | |
| 1497 | |
| 1498 | LInstruction* LChunkBuilder::DoModI(HMod* instr) { |
| 1499 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1500 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1501 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1502 | LOperand* dividend = UseFixed(instr->left(), eax); |
| 1503 | LOperand* divisor = UseRegister(instr->right()); |
| 1504 | LOperand* temp = FixedTemp(edx); |
| 1505 | LInstruction* result = DefineFixed(new(zone()) LModI( |
| 1506 | dividend, divisor, temp), edx); |
| 1507 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1508 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1509 | result = AssignEnvironment(result); |
| 1510 | } |
| 1511 | return result; |
| 1512 | } |
| 1513 | |
| 1514 | |
| 1515 | LInstruction* LChunkBuilder::DoMod(HMod* instr) { |
| 1516 | if (instr->representation().IsSmiOrInteger32()) { |
| 1517 | if (instr->RightIsPowerOf2()) { |
| 1518 | return DoModByPowerOf2I(instr); |
| 1519 | } else if (instr->right()->IsConstant()) { |
| 1520 | return DoModByConstI(instr); |
| 1521 | } else { |
| 1522 | return DoModI(instr); |
| 1523 | } |
| 1524 | } else if (instr->representation().IsDouble()) { |
| 1525 | return DoArithmeticD(Token::MOD, instr); |
| 1526 | } else { |
| 1527 | return DoArithmeticT(Token::MOD, instr); |
| 1528 | } |
| 1529 | } |
| 1530 | |
| 1531 | |
| 1532 | LInstruction* LChunkBuilder::DoMul(HMul* instr) { |
| 1533 | if (instr->representation().IsSmiOrInteger32()) { |
| 1534 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1535 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1536 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1537 | HValue* h_right = instr->BetterRightOperand(); |
| 1538 | LOperand* right = UseOrConstant(h_right); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1539 | LOperand* temp = NULL; |
| 1540 | if (instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1541 | temp = TempRegister(); |
| 1542 | } |
| 1543 | LMulI* mul = new(zone()) LMulI(left, right, temp); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 1544 | int constant_value = |
| 1545 | h_right->IsConstant() ? HConstant::cast(h_right)->Integer32Value() : 0; |
| 1546 | // |needs_environment| must mirror the cases where LCodeGen::DoMulI calls |
| 1547 | // |DeoptimizeIf|. |
| 1548 | bool needs_environment = |
| 1549 | instr->CheckFlag(HValue::kCanOverflow) || |
| 1550 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && |
| 1551 | (!right->IsConstantOperand() || constant_value <= 0)); |
| 1552 | if (needs_environment) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1553 | AssignEnvironment(mul); |
| 1554 | } |
| 1555 | return DefineSameAsFirst(mul); |
| 1556 | } else if (instr->representation().IsDouble()) { |
| 1557 | return DoArithmeticD(Token::MUL, instr); |
| 1558 | } else { |
| 1559 | return DoArithmeticT(Token::MUL, instr); |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | |
| 1564 | LInstruction* LChunkBuilder::DoSub(HSub* instr) { |
| 1565 | if (instr->representation().IsSmiOrInteger32()) { |
| 1566 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1567 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1568 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1569 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1570 | LSubI* sub = new(zone()) LSubI(left, right); |
| 1571 | LInstruction* result = DefineSameAsFirst(sub); |
| 1572 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1573 | result = AssignEnvironment(result); |
| 1574 | } |
| 1575 | return result; |
| 1576 | } else if (instr->representation().IsDouble()) { |
| 1577 | return DoArithmeticD(Token::SUB, instr); |
| 1578 | } else { |
| 1579 | return DoArithmeticT(Token::SUB, instr); |
| 1580 | } |
| 1581 | } |
| 1582 | |
| 1583 | |
| 1584 | LInstruction* LChunkBuilder::DoAdd(HAdd* instr) { |
| 1585 | if (instr->representation().IsSmiOrInteger32()) { |
| 1586 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1587 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1588 | // Check to see if it would be advantageous to use an lea instruction rather |
| 1589 | // than an add. This is the case when no overflow check is needed and there |
| 1590 | // are multiple uses of the add's inputs, so using a 3-register add will |
| 1591 | // preserve all input values for later uses. |
| 1592 | bool use_lea = LAddI::UseLea(instr); |
| 1593 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1594 | HValue* right_candidate = instr->BetterRightOperand(); |
| 1595 | LOperand* right = use_lea |
| 1596 | ? UseRegisterOrConstantAtStart(right_candidate) |
| 1597 | : UseOrConstantAtStart(right_candidate); |
| 1598 | LAddI* add = new(zone()) LAddI(left, right); |
| 1599 | bool can_overflow = instr->CheckFlag(HValue::kCanOverflow); |
| 1600 | LInstruction* result = use_lea |
| 1601 | ? DefineAsRegister(add) |
| 1602 | : DefineSameAsFirst(add); |
| 1603 | if (can_overflow) { |
| 1604 | result = AssignEnvironment(result); |
| 1605 | } |
| 1606 | return result; |
| 1607 | } else if (instr->representation().IsDouble()) { |
| 1608 | return DoArithmeticD(Token::ADD, instr); |
| 1609 | } else if (instr->representation().IsExternal()) { |
| 1610 | DCHECK(instr->IsConsistentExternalRepresentation()); |
| 1611 | DCHECK(!instr->CheckFlag(HValue::kCanOverflow)); |
| 1612 | bool use_lea = LAddI::UseLea(instr); |
| 1613 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1614 | HValue* right_candidate = instr->right(); |
| 1615 | LOperand* right = use_lea |
| 1616 | ? UseRegisterOrConstantAtStart(right_candidate) |
| 1617 | : UseOrConstantAtStart(right_candidate); |
| 1618 | LAddI* add = new(zone()) LAddI(left, right); |
| 1619 | LInstruction* result = use_lea |
| 1620 | ? DefineAsRegister(add) |
| 1621 | : DefineSameAsFirst(add); |
| 1622 | return result; |
| 1623 | } else { |
| 1624 | return DoArithmeticT(Token::ADD, instr); |
| 1625 | } |
| 1626 | } |
| 1627 | |
| 1628 | |
| 1629 | LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) { |
| 1630 | LOperand* left = NULL; |
| 1631 | LOperand* right = NULL; |
| 1632 | LOperand* scratch = TempRegister(); |
| 1633 | |
| 1634 | if (instr->representation().IsSmiOrInteger32()) { |
| 1635 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1636 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1637 | left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1638 | right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1639 | } else { |
| 1640 | DCHECK(instr->representation().IsDouble()); |
| 1641 | DCHECK(instr->left()->representation().IsDouble()); |
| 1642 | DCHECK(instr->right()->representation().IsDouble()); |
| 1643 | left = UseRegisterAtStart(instr->left()); |
| 1644 | right = UseRegisterAtStart(instr->right()); |
| 1645 | } |
| 1646 | LMathMinMax* minmax = new (zone()) LMathMinMax(left, right, scratch); |
| 1647 | return DefineSameAsFirst(minmax); |
| 1648 | } |
| 1649 | |
| 1650 | |
| 1651 | LInstruction* LChunkBuilder::DoPower(HPower* instr) { |
| 1652 | // Unlike ia32, we don't have a MathPowStub and directly call c function. |
| 1653 | DCHECK(instr->representation().IsDouble()); |
| 1654 | DCHECK(instr->left()->representation().IsDouble()); |
| 1655 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1656 | LOperand* right = UseRegisterAtStart(instr->right()); |
| 1657 | LPower* result = new (zone()) LPower(left, right); |
| 1658 | return MarkAsCall(DefineSameAsFirst(result), instr); |
| 1659 | } |
| 1660 | |
| 1661 | |
| 1662 | LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) { |
| 1663 | DCHECK(instr->left()->representation().IsSmiOrTagged()); |
| 1664 | DCHECK(instr->right()->representation().IsSmiOrTagged()); |
| 1665 | LOperand* context = UseFixed(instr->context(), esi); |
| 1666 | LOperand* left = UseFixed(instr->left(), edx); |
| 1667 | LOperand* right = UseFixed(instr->right(), eax); |
| 1668 | LCmpT* result = new(zone()) LCmpT(context, left, right); |
| 1669 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 1670 | } |
| 1671 | |
| 1672 | |
| 1673 | LInstruction* LChunkBuilder::DoCompareNumericAndBranch( |
| 1674 | HCompareNumericAndBranch* instr) { |
| 1675 | Representation r = instr->representation(); |
| 1676 | if (r.IsSmiOrInteger32()) { |
| 1677 | DCHECK(instr->left()->representation().Equals(r)); |
| 1678 | DCHECK(instr->right()->representation().Equals(r)); |
| 1679 | LOperand* left = UseRegisterOrConstantAtStart(instr->left()); |
| 1680 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1681 | return new(zone()) LCompareNumericAndBranch(left, right); |
| 1682 | } else { |
| 1683 | DCHECK(r.IsDouble()); |
| 1684 | DCHECK(instr->left()->representation().IsDouble()); |
| 1685 | DCHECK(instr->right()->representation().IsDouble()); |
| 1686 | LOperand* left; |
| 1687 | LOperand* right; |
| 1688 | if (CanBeImmediateConstant(instr->left()) && |
| 1689 | CanBeImmediateConstant(instr->right())) { |
| 1690 | // The code generator requires either both inputs to be constant |
| 1691 | // operands, or neither. |
| 1692 | left = UseConstant(instr->left()); |
| 1693 | right = UseConstant(instr->right()); |
| 1694 | } else { |
| 1695 | left = UseRegisterAtStart(instr->left()); |
| 1696 | right = UseRegisterAtStart(instr->right()); |
| 1697 | } |
| 1698 | return new(zone()) LCompareNumericAndBranch(left, right); |
| 1699 | } |
| 1700 | } |
| 1701 | |
| 1702 | |
| 1703 | LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch( |
| 1704 | HCompareObjectEqAndBranch* instr) { |
| 1705 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1706 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1707 | return new(zone()) LCmpObjectEqAndBranch(left, right); |
| 1708 | } |
| 1709 | |
| 1710 | |
| 1711 | LInstruction* LChunkBuilder::DoCompareHoleAndBranch( |
| 1712 | HCompareHoleAndBranch* instr) { |
| 1713 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1714 | return new (zone()) LCmpHoleAndBranch(value); |
| 1715 | } |
| 1716 | |
| 1717 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1718 | LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) { |
| 1719 | DCHECK(instr->value()->representation().IsTagged()); |
| 1720 | LOperand* temp = TempRegister(); |
| 1721 | return new(zone()) LIsStringAndBranch(UseRegister(instr->value()), temp); |
| 1722 | } |
| 1723 | |
| 1724 | |
| 1725 | LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) { |
| 1726 | DCHECK(instr->value()->representation().IsTagged()); |
| 1727 | return new(zone()) LIsSmiAndBranch(Use(instr->value())); |
| 1728 | } |
| 1729 | |
| 1730 | |
| 1731 | LInstruction* LChunkBuilder::DoIsUndetectableAndBranch( |
| 1732 | HIsUndetectableAndBranch* instr) { |
| 1733 | DCHECK(instr->value()->representation().IsTagged()); |
| 1734 | return new(zone()) LIsUndetectableAndBranch( |
| 1735 | UseRegisterAtStart(instr->value()), TempRegister()); |
| 1736 | } |
| 1737 | |
| 1738 | |
| 1739 | LInstruction* LChunkBuilder::DoStringCompareAndBranch( |
| 1740 | HStringCompareAndBranch* instr) { |
| 1741 | DCHECK(instr->left()->representation().IsTagged()); |
| 1742 | DCHECK(instr->right()->representation().IsTagged()); |
| 1743 | LOperand* context = UseFixed(instr->context(), esi); |
| 1744 | LOperand* left = UseFixed(instr->left(), edx); |
| 1745 | LOperand* right = UseFixed(instr->right(), eax); |
| 1746 | |
| 1747 | LStringCompareAndBranch* result = new(zone()) |
| 1748 | LStringCompareAndBranch(context, left, right); |
| 1749 | |
| 1750 | return MarkAsCall(result, instr); |
| 1751 | } |
| 1752 | |
| 1753 | |
| 1754 | LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch( |
| 1755 | HHasInstanceTypeAndBranch* instr) { |
| 1756 | DCHECK(instr->value()->representation().IsTagged()); |
| 1757 | return new(zone()) LHasInstanceTypeAndBranch( |
| 1758 | UseRegisterAtStart(instr->value()), |
| 1759 | TempRegister()); |
| 1760 | } |
| 1761 | |
| 1762 | |
| 1763 | LInstruction* LChunkBuilder::DoGetCachedArrayIndex( |
| 1764 | HGetCachedArrayIndex* instr) { |
| 1765 | DCHECK(instr->value()->representation().IsTagged()); |
| 1766 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1767 | |
| 1768 | return DefineAsRegister(new(zone()) LGetCachedArrayIndex(value)); |
| 1769 | } |
| 1770 | |
| 1771 | |
| 1772 | LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch( |
| 1773 | HHasCachedArrayIndexAndBranch* instr) { |
| 1774 | DCHECK(instr->value()->representation().IsTagged()); |
| 1775 | return new(zone()) LHasCachedArrayIndexAndBranch( |
| 1776 | UseRegisterAtStart(instr->value())); |
| 1777 | } |
| 1778 | |
| 1779 | |
| 1780 | LInstruction* LChunkBuilder::DoClassOfTestAndBranch( |
| 1781 | HClassOfTestAndBranch* instr) { |
| 1782 | DCHECK(instr->value()->representation().IsTagged()); |
| 1783 | return new(zone()) LClassOfTestAndBranch(UseRegister(instr->value()), |
| 1784 | TempRegister(), |
| 1785 | TempRegister()); |
| 1786 | } |
| 1787 | |
| 1788 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1789 | LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) { |
| 1790 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1791 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1792 | return DefineAsRegister(new(zone()) LSeqStringGetChar(string, index)); |
| 1793 | } |
| 1794 | |
| 1795 | |
| 1796 | LOperand* LChunkBuilder::GetSeqStringSetCharOperand(HSeqStringSetChar* instr) { |
| 1797 | if (instr->encoding() == String::ONE_BYTE_ENCODING) { |
| 1798 | if (FLAG_debug_code) { |
| 1799 | return UseFixed(instr->value(), eax); |
| 1800 | } else { |
| 1801 | return UseFixedOrConstant(instr->value(), eax); |
| 1802 | } |
| 1803 | } else { |
| 1804 | if (FLAG_debug_code) { |
| 1805 | return UseRegisterAtStart(instr->value()); |
| 1806 | } else { |
| 1807 | return UseRegisterOrConstantAtStart(instr->value()); |
| 1808 | } |
| 1809 | } |
| 1810 | } |
| 1811 | |
| 1812 | |
| 1813 | LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) { |
| 1814 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1815 | LOperand* index = FLAG_debug_code |
| 1816 | ? UseRegisterAtStart(instr->index()) |
| 1817 | : UseRegisterOrConstantAtStart(instr->index()); |
| 1818 | LOperand* value = GetSeqStringSetCharOperand(instr); |
| 1819 | LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), esi) : NULL; |
| 1820 | LInstruction* result = new(zone()) LSeqStringSetChar(context, string, |
| 1821 | index, value); |
| 1822 | if (FLAG_debug_code) { |
| 1823 | result = MarkAsCall(result, instr); |
| 1824 | } |
| 1825 | return result; |
| 1826 | } |
| 1827 | |
| 1828 | |
| 1829 | LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { |
| 1830 | if (!FLAG_debug_code && instr->skip_check()) return NULL; |
| 1831 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1832 | LOperand* length = !index->IsConstantOperand() |
| 1833 | ? UseOrConstantAtStart(instr->length()) |
| 1834 | : UseAtStart(instr->length()); |
| 1835 | LInstruction* result = new(zone()) LBoundsCheck(index, length); |
| 1836 | if (!FLAG_debug_code || !instr->skip_check()) { |
| 1837 | result = AssignEnvironment(result); |
| 1838 | } |
| 1839 | return result; |
| 1840 | } |
| 1841 | |
| 1842 | |
| 1843 | LInstruction* LChunkBuilder::DoBoundsCheckBaseIndexInformation( |
| 1844 | HBoundsCheckBaseIndexInformation* instr) { |
| 1845 | UNREACHABLE(); |
| 1846 | return NULL; |
| 1847 | } |
| 1848 | |
| 1849 | |
| 1850 | LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) { |
| 1851 | // The control instruction marking the end of a block that completed |
| 1852 | // abruptly (e.g., threw an exception). There is nothing specific to do. |
| 1853 | return NULL; |
| 1854 | } |
| 1855 | |
| 1856 | |
| 1857 | LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) { |
| 1858 | return NULL; |
| 1859 | } |
| 1860 | |
| 1861 | |
| 1862 | LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) { |
| 1863 | // All HForceRepresentation instructions should be eliminated in the |
| 1864 | // representation change phase of Hydrogen. |
| 1865 | UNREACHABLE(); |
| 1866 | return NULL; |
| 1867 | } |
| 1868 | |
| 1869 | |
| 1870 | LInstruction* LChunkBuilder::DoChange(HChange* instr) { |
| 1871 | Representation from = instr->from(); |
| 1872 | Representation to = instr->to(); |
| 1873 | HValue* val = instr->value(); |
| 1874 | if (from.IsSmi()) { |
| 1875 | if (to.IsTagged()) { |
| 1876 | LOperand* value = UseRegister(val); |
| 1877 | return DefineSameAsFirst(new(zone()) LDummyUse(value)); |
| 1878 | } |
| 1879 | from = Representation::Tagged(); |
| 1880 | } |
| 1881 | if (from.IsTagged()) { |
| 1882 | if (to.IsDouble()) { |
| 1883 | LOperand* value = UseRegister(val); |
| 1884 | LOperand* temp = TempRegister(); |
| 1885 | LInstruction* result = |
| 1886 | DefineAsRegister(new(zone()) LNumberUntagD(value, temp)); |
| 1887 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1888 | return result; |
| 1889 | } else if (to.IsSmi()) { |
| 1890 | LOperand* value = UseRegister(val); |
| 1891 | if (val->type().IsSmi()) { |
| 1892 | return DefineSameAsFirst(new(zone()) LDummyUse(value)); |
| 1893 | } |
| 1894 | return AssignEnvironment(DefineSameAsFirst(new(zone()) LCheckSmi(value))); |
| 1895 | } else { |
| 1896 | DCHECK(to.IsInteger32()); |
| 1897 | if (val->type().IsSmi() || val->representation().IsSmi()) { |
| 1898 | LOperand* value = UseRegister(val); |
| 1899 | return DefineSameAsFirst(new(zone()) LSmiUntag(value, false)); |
| 1900 | } else { |
| 1901 | LOperand* value = UseRegister(val); |
| 1902 | LInstruction* result = DefineSameAsFirst(new(zone()) LTaggedToI(value)); |
| 1903 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1904 | return result; |
| 1905 | } |
| 1906 | } |
| 1907 | } else if (from.IsDouble()) { |
| 1908 | if (to.IsTagged()) { |
| 1909 | info()->MarkAsDeferredCalling(); |
| 1910 | LOperand* value = UseRegisterAtStart(val); |
| 1911 | LOperand* temp = FLAG_inline_new ? TempRegister() : NULL; |
| 1912 | LUnallocated* result_temp = TempRegister(); |
| 1913 | LNumberTagD* result = new(zone()) LNumberTagD(value, temp); |
| 1914 | return AssignPointerMap(Define(result, result_temp)); |
| 1915 | } else if (to.IsSmi()) { |
| 1916 | LOperand* value = UseRegister(val); |
| 1917 | return AssignEnvironment( |
| 1918 | DefineAsRegister(new(zone()) LDoubleToSmi(value))); |
| 1919 | } else { |
| 1920 | DCHECK(to.IsInteger32()); |
| 1921 | bool truncating = instr->CanTruncateToInt32(); |
| 1922 | LOperand* value = UseRegister(val); |
| 1923 | LInstruction* result = DefineAsRegister(new(zone()) LDoubleToI(value)); |
| 1924 | if (!truncating) result = AssignEnvironment(result); |
| 1925 | return result; |
| 1926 | } |
| 1927 | } else if (from.IsInteger32()) { |
| 1928 | info()->MarkAsDeferredCalling(); |
| 1929 | if (to.IsTagged()) { |
| 1930 | if (!instr->CheckFlag(HValue::kCanOverflow)) { |
| 1931 | LOperand* value = UseRegister(val); |
| 1932 | return DefineSameAsFirst(new(zone()) LSmiTag(value)); |
| 1933 | } else if (val->CheckFlag(HInstruction::kUint32)) { |
| 1934 | LOperand* value = UseRegister(val); |
| 1935 | LOperand* temp = TempRegister(); |
| 1936 | LNumberTagU* result = new(zone()) LNumberTagU(value, temp); |
| 1937 | return AssignPointerMap(DefineSameAsFirst(result)); |
| 1938 | } else { |
| 1939 | LOperand* value = UseRegister(val); |
| 1940 | LOperand* temp = TempRegister(); |
| 1941 | LNumberTagI* result = new(zone()) LNumberTagI(value, temp); |
| 1942 | return AssignPointerMap(DefineSameAsFirst(result)); |
| 1943 | } |
| 1944 | } else if (to.IsSmi()) { |
| 1945 | LOperand* value = UseRegister(val); |
| 1946 | LInstruction* result = DefineSameAsFirst(new(zone()) LSmiTag(value)); |
| 1947 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1948 | result = AssignEnvironment(result); |
| 1949 | } |
| 1950 | return result; |
| 1951 | } else { |
| 1952 | DCHECK(to.IsDouble()); |
| 1953 | if (val->CheckFlag(HInstruction::kUint32)) { |
| 1954 | return DefineAsRegister(new(zone()) LUint32ToDouble(UseRegister(val))); |
| 1955 | } else { |
| 1956 | return DefineAsRegister(new(zone()) LInteger32ToDouble(Use(val))); |
| 1957 | } |
| 1958 | } |
| 1959 | } |
| 1960 | UNREACHABLE(); |
| 1961 | return NULL; |
| 1962 | } |
| 1963 | |
| 1964 | |
| 1965 | LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) { |
| 1966 | LOperand* value = UseAtStart(instr->value()); |
| 1967 | LInstruction* result = new(zone()) LCheckNonSmi(value); |
| 1968 | if (!instr->value()->type().IsHeapObject()) { |
| 1969 | result = AssignEnvironment(result); |
| 1970 | } |
| 1971 | return result; |
| 1972 | } |
| 1973 | |
| 1974 | |
| 1975 | LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) { |
| 1976 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1977 | return AssignEnvironment(new(zone()) LCheckSmi(value)); |
| 1978 | } |
| 1979 | |
| 1980 | |
| 1981 | LInstruction* LChunkBuilder::DoCheckArrayBufferNotNeutered( |
| 1982 | HCheckArrayBufferNotNeutered* instr) { |
| 1983 | LOperand* view = UseRegisterAtStart(instr->value()); |
| 1984 | LOperand* scratch = TempRegister(); |
| 1985 | LCheckArrayBufferNotNeutered* result = |
| 1986 | new (zone()) LCheckArrayBufferNotNeutered(view, scratch); |
| 1987 | return AssignEnvironment(result); |
| 1988 | } |
| 1989 | |
| 1990 | |
| 1991 | LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) { |
| 1992 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1993 | LOperand* temp = TempRegister(); |
| 1994 | LCheckInstanceType* result = new(zone()) LCheckInstanceType(value, temp); |
| 1995 | return AssignEnvironment(result); |
| 1996 | } |
| 1997 | |
| 1998 | |
| 1999 | LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) { |
| 2000 | // If the object is in new space, we'll emit a global cell compare and so |
| 2001 | // want the value in a register. If the object gets promoted before we |
| 2002 | // emit code, we will still get the register but will do an immediate |
| 2003 | // compare instead of the cell compare. This is safe. |
| 2004 | LOperand* value = instr->object_in_new_space() |
| 2005 | ? UseRegisterAtStart(instr->value()) : UseAtStart(instr->value()); |
| 2006 | return AssignEnvironment(new(zone()) LCheckValue(value)); |
| 2007 | } |
| 2008 | |
| 2009 | |
| 2010 | LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) { |
| 2011 | if (instr->IsStabilityCheck()) return new(zone()) LCheckMaps; |
| 2012 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 2013 | LInstruction* result = AssignEnvironment(new(zone()) LCheckMaps(value)); |
| 2014 | if (instr->HasMigrationTarget()) { |
| 2015 | info()->MarkAsDeferredCalling(); |
| 2016 | result = AssignPointerMap(result); |
| 2017 | } |
| 2018 | return result; |
| 2019 | } |
| 2020 | |
| 2021 | |
| 2022 | LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) { |
| 2023 | HValue* value = instr->value(); |
| 2024 | Representation input_rep = value->representation(); |
| 2025 | if (input_rep.IsDouble()) { |
| 2026 | LOperand* reg = UseRegister(value); |
| 2027 | return DefineFixed(new (zone()) LClampDToUint8(reg), eax); |
| 2028 | } else if (input_rep.IsInteger32()) { |
| 2029 | LOperand* reg = UseFixed(value, eax); |
| 2030 | return DefineFixed(new(zone()) LClampIToUint8(reg), eax); |
| 2031 | } else { |
| 2032 | DCHECK(input_rep.IsSmiOrTagged()); |
| 2033 | LOperand* value = UseRegister(instr->value()); |
| 2034 | LClampTToUint8NoSSE2* res = |
| 2035 | new(zone()) LClampTToUint8NoSSE2(value, TempRegister(), |
| 2036 | TempRegister(), TempRegister()); |
| 2037 | return AssignEnvironment(DefineFixed(res, ecx)); |
| 2038 | } |
| 2039 | } |
| 2040 | |
| 2041 | |
| 2042 | LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) { |
| 2043 | HValue* value = instr->value(); |
| 2044 | DCHECK(value->representation().IsDouble()); |
| 2045 | return DefineAsRegister(new(zone()) LDoubleBits(UseRegister(value))); |
| 2046 | } |
| 2047 | |
| 2048 | |
| 2049 | LInstruction* LChunkBuilder::DoConstructDouble(HConstructDouble* instr) { |
| 2050 | LOperand* lo = UseRegister(instr->lo()); |
| 2051 | LOperand* hi = UseRegister(instr->hi()); |
| 2052 | return DefineAsRegister(new(zone()) LConstructDouble(hi, lo)); |
| 2053 | } |
| 2054 | |
| 2055 | |
| 2056 | LInstruction* LChunkBuilder::DoReturn(HReturn* instr) { |
| 2057 | LOperand* context = info()->IsStub() ? UseFixed(instr->context(), esi) : NULL; |
| 2058 | LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count()); |
| 2059 | return new(zone()) LReturn( |
| 2060 | UseFixed(instr->value(), eax), context, parameter_count); |
| 2061 | } |
| 2062 | |
| 2063 | |
| 2064 | LInstruction* LChunkBuilder::DoConstant(HConstant* instr) { |
| 2065 | Representation r = instr->representation(); |
| 2066 | if (r.IsSmi()) { |
| 2067 | return DefineAsRegister(new(zone()) LConstantS); |
| 2068 | } else if (r.IsInteger32()) { |
| 2069 | return DefineAsRegister(new(zone()) LConstantI); |
| 2070 | } else if (r.IsDouble()) { |
| 2071 | return DefineAsRegister(new (zone()) LConstantD); |
| 2072 | } else if (r.IsExternal()) { |
| 2073 | return DefineAsRegister(new(zone()) LConstantE); |
| 2074 | } else if (r.IsTagged()) { |
| 2075 | return DefineAsRegister(new(zone()) LConstantT); |
| 2076 | } else { |
| 2077 | UNREACHABLE(); |
| 2078 | return NULL; |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | |
| 2083 | LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) { |
| 2084 | LOperand* context = UseFixed(instr->context(), esi); |
| 2085 | LOperand* global_object = |
| 2086 | UseFixed(instr->global_object(), LoadDescriptor::ReceiverRegister()); |
| 2087 | LOperand* vector = NULL; |
| 2088 | if (instr->HasVectorAndSlot()) { |
| 2089 | vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
| 2090 | } |
| 2091 | |
| 2092 | LLoadGlobalGeneric* result = |
| 2093 | new(zone()) LLoadGlobalGeneric(context, global_object, vector); |
| 2094 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 2095 | } |
| 2096 | |
| 2097 | |
| 2098 | LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) { |
| 2099 | LOperand* context = UseRegisterAtStart(instr->value()); |
| 2100 | LInstruction* result = |
| 2101 | DefineAsRegister(new(zone()) LLoadContextSlot(context)); |
| 2102 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 2103 | result = AssignEnvironment(result); |
| 2104 | } |
| 2105 | return result; |
| 2106 | } |
| 2107 | |
| 2108 | |
| 2109 | LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) { |
| 2110 | LOperand* value; |
| 2111 | LOperand* temp; |
| 2112 | LOperand* context = UseRegister(instr->context()); |
| 2113 | if (instr->NeedsWriteBarrier()) { |
| 2114 | value = UseTempRegister(instr->value()); |
| 2115 | temp = TempRegister(); |
| 2116 | } else { |
| 2117 | value = UseRegister(instr->value()); |
| 2118 | temp = NULL; |
| 2119 | } |
| 2120 | LInstruction* result = new(zone()) LStoreContextSlot(context, value, temp); |
| 2121 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 2122 | result = AssignEnvironment(result); |
| 2123 | } |
| 2124 | return result; |
| 2125 | } |
| 2126 | |
| 2127 | |
| 2128 | LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) { |
| 2129 | LOperand* obj = (instr->access().IsExternalMemory() && |
| 2130 | instr->access().offset() == 0) |
| 2131 | ? UseRegisterOrConstantAtStart(instr->object()) |
| 2132 | : UseRegisterAtStart(instr->object()); |
| 2133 | return DefineAsRegister(new(zone()) LLoadNamedField(obj)); |
| 2134 | } |
| 2135 | |
| 2136 | |
| 2137 | LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) { |
| 2138 | LOperand* context = UseFixed(instr->context(), esi); |
| 2139 | LOperand* object = |
| 2140 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
| 2141 | LOperand* vector = NULL; |
| 2142 | if (instr->HasVectorAndSlot()) { |
| 2143 | vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
| 2144 | } |
| 2145 | LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric( |
| 2146 | context, object, vector); |
| 2147 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 2148 | } |
| 2149 | |
| 2150 | |
| 2151 | LInstruction* LChunkBuilder::DoLoadFunctionPrototype( |
| 2152 | HLoadFunctionPrototype* instr) { |
| 2153 | return AssignEnvironment(DefineAsRegister( |
| 2154 | new(zone()) LLoadFunctionPrototype(UseRegister(instr->function()), |
| 2155 | TempRegister()))); |
| 2156 | } |
| 2157 | |
| 2158 | |
| 2159 | LInstruction* LChunkBuilder::DoLoadRoot(HLoadRoot* instr) { |
| 2160 | return DefineAsRegister(new(zone()) LLoadRoot); |
| 2161 | } |
| 2162 | |
| 2163 | |
| 2164 | LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) { |
| 2165 | DCHECK(instr->key()->representation().IsSmiOrInteger32()); |
| 2166 | ElementsKind elements_kind = instr->elements_kind(); |
| 2167 | bool clobbers_key = ExternalArrayOpRequiresTemp( |
| 2168 | instr->key()->representation(), elements_kind); |
| 2169 | LOperand* key = clobbers_key |
| 2170 | ? UseTempRegister(instr->key()) |
| 2171 | : UseRegisterOrConstantAtStart(instr->key()); |
| 2172 | LInstruction* result = NULL; |
| 2173 | |
| 2174 | if (!instr->is_fixed_typed_array()) { |
| 2175 | LOperand* obj = UseRegisterAtStart(instr->elements()); |
| 2176 | result = DefineAsRegister(new (zone()) LLoadKeyed(obj, key, nullptr)); |
| 2177 | } else { |
| 2178 | DCHECK( |
| 2179 | (instr->representation().IsInteger32() && |
| 2180 | !(IsDoubleOrFloatElementsKind(instr->elements_kind()))) || |
| 2181 | (instr->representation().IsDouble() && |
| 2182 | (IsDoubleOrFloatElementsKind(instr->elements_kind())))); |
| 2183 | LOperand* backing_store = UseRegister(instr->elements()); |
| 2184 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 2185 | result = DefineAsRegister( |
| 2186 | new (zone()) LLoadKeyed(backing_store, key, backing_store_owner)); |
| 2187 | } |
| 2188 | |
| 2189 | bool needs_environment; |
| 2190 | if (instr->is_fixed_typed_array()) { |
| 2191 | // see LCodeGen::DoLoadKeyedExternalArray |
| 2192 | needs_environment = elements_kind == UINT32_ELEMENTS && |
| 2193 | !instr->CheckFlag(HInstruction::kUint32); |
| 2194 | } else { |
| 2195 | // see LCodeGen::DoLoadKeyedFixedDoubleArray and |
| 2196 | // LCodeGen::DoLoadKeyedFixedArray |
| 2197 | needs_environment = |
| 2198 | instr->RequiresHoleCheck() || |
| 2199 | (instr->hole_mode() == CONVERT_HOLE_TO_UNDEFINED && info()->IsStub()); |
| 2200 | } |
| 2201 | |
| 2202 | if (needs_environment) { |
| 2203 | result = AssignEnvironment(result); |
| 2204 | } |
| 2205 | return result; |
| 2206 | } |
| 2207 | |
| 2208 | |
| 2209 | LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) { |
| 2210 | LOperand* context = UseFixed(instr->context(), esi); |
| 2211 | LOperand* object = |
| 2212 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
| 2213 | LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister()); |
| 2214 | LOperand* vector = NULL; |
| 2215 | if (instr->HasVectorAndSlot()) { |
| 2216 | vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
| 2217 | } |
| 2218 | LLoadKeyedGeneric* result = |
| 2219 | new(zone()) LLoadKeyedGeneric(context, object, key, vector); |
| 2220 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 2221 | } |
| 2222 | |
| 2223 | |
| 2224 | LOperand* LChunkBuilder::GetStoreKeyedValueOperand(HStoreKeyed* instr) { |
| 2225 | ElementsKind elements_kind = instr->elements_kind(); |
| 2226 | |
| 2227 | // Determine if we need a byte register in this case for the value. |
| 2228 | bool val_is_fixed_register = |
| 2229 | elements_kind == UINT8_ELEMENTS || |
| 2230 | elements_kind == INT8_ELEMENTS || |
| 2231 | elements_kind == UINT8_CLAMPED_ELEMENTS; |
| 2232 | if (val_is_fixed_register) { |
| 2233 | return UseFixed(instr->value(), eax); |
| 2234 | } |
| 2235 | |
| 2236 | if (IsDoubleOrFloatElementsKind(elements_kind)) { |
| 2237 | return UseRegisterAtStart(instr->value()); |
| 2238 | } |
| 2239 | |
| 2240 | return UseRegister(instr->value()); |
| 2241 | } |
| 2242 | |
| 2243 | |
| 2244 | LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) { |
| 2245 | if (!instr->is_fixed_typed_array()) { |
| 2246 | DCHECK(instr->elements()->representation().IsTagged()); |
| 2247 | DCHECK(instr->key()->representation().IsInteger32() || |
| 2248 | instr->key()->representation().IsSmi()); |
| 2249 | |
| 2250 | if (instr->value()->representation().IsDouble()) { |
| 2251 | LOperand* object = UseRegisterAtStart(instr->elements()); |
| 2252 | // For storing double hole, no fp register required. |
| 2253 | LOperand* val = instr->IsConstantHoleStore() |
| 2254 | ? NULL |
| 2255 | : UseRegisterAtStart(instr->value()); |
| 2256 | LOperand* key = UseRegisterOrConstantAtStart(instr->key()); |
| 2257 | return new (zone()) LStoreKeyed(object, key, val, nullptr); |
| 2258 | } else { |
| 2259 | DCHECK(instr->value()->representation().IsSmiOrTagged()); |
| 2260 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 2261 | |
| 2262 | LOperand* obj = UseRegister(instr->elements()); |
| 2263 | LOperand* val; |
| 2264 | LOperand* key; |
| 2265 | if (needs_write_barrier) { |
| 2266 | val = UseTempRegister(instr->value()); |
| 2267 | key = UseTempRegister(instr->key()); |
| 2268 | } else { |
| 2269 | val = UseRegisterOrConstantAtStart(instr->value()); |
| 2270 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 2271 | } |
| 2272 | return new (zone()) LStoreKeyed(obj, key, val, nullptr); |
| 2273 | } |
| 2274 | } |
| 2275 | |
| 2276 | ElementsKind elements_kind = instr->elements_kind(); |
| 2277 | DCHECK( |
| 2278 | (instr->value()->representation().IsInteger32() && |
| 2279 | !IsDoubleOrFloatElementsKind(elements_kind)) || |
| 2280 | (instr->value()->representation().IsDouble() && |
| 2281 | IsDoubleOrFloatElementsKind(elements_kind))); |
| 2282 | DCHECK(instr->elements()->representation().IsExternal()); |
| 2283 | |
| 2284 | LOperand* backing_store = UseRegister(instr->elements()); |
| 2285 | LOperand* val = GetStoreKeyedValueOperand(instr); |
| 2286 | bool clobbers_key = ExternalArrayOpRequiresTemp( |
| 2287 | instr->key()->representation(), elements_kind); |
| 2288 | LOperand* key = clobbers_key |
| 2289 | ? UseTempRegister(instr->key()) |
| 2290 | : UseRegisterOrConstantAtStart(instr->key()); |
| 2291 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 2292 | return new (zone()) LStoreKeyed(backing_store, key, val, backing_store_owner); |
| 2293 | } |
| 2294 | |
| 2295 | |
| 2296 | LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) { |
| 2297 | LOperand* context = UseFixed(instr->context(), esi); |
| 2298 | LOperand* object = |
| 2299 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 2300 | LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister()); |
| 2301 | LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
| 2302 | |
| 2303 | DCHECK(instr->object()->representation().IsTagged()); |
| 2304 | DCHECK(instr->key()->representation().IsTagged()); |
| 2305 | DCHECK(instr->value()->representation().IsTagged()); |
| 2306 | |
| 2307 | LOperand* slot = NULL; |
| 2308 | LOperand* vector = NULL; |
| 2309 | if (instr->HasVectorAndSlot()) { |
| 2310 | slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 2311 | vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
| 2312 | } |
| 2313 | |
| 2314 | LStoreKeyedGeneric* result = new (zone()) |
| 2315 | LStoreKeyedGeneric(context, object, key, value, slot, vector); |
| 2316 | return MarkAsCall(result, instr); |
| 2317 | } |
| 2318 | |
| 2319 | |
| 2320 | LInstruction* LChunkBuilder::DoTransitionElementsKind( |
| 2321 | HTransitionElementsKind* instr) { |
| 2322 | if (IsSimpleMapChangeTransition(instr->from_kind(), instr->to_kind())) { |
| 2323 | LOperand* object = UseRegister(instr->object()); |
| 2324 | LOperand* new_map_reg = TempRegister(); |
| 2325 | LOperand* temp_reg = TempRegister(); |
| 2326 | LTransitionElementsKind* result = |
| 2327 | new(zone()) LTransitionElementsKind(object, NULL, |
| 2328 | new_map_reg, temp_reg); |
| 2329 | return result; |
| 2330 | } else { |
| 2331 | LOperand* object = UseFixed(instr->object(), eax); |
| 2332 | LOperand* context = UseFixed(instr->context(), esi); |
| 2333 | LTransitionElementsKind* result = |
| 2334 | new(zone()) LTransitionElementsKind(object, context, NULL, NULL); |
| 2335 | return MarkAsCall(result, instr); |
| 2336 | } |
| 2337 | } |
| 2338 | |
| 2339 | |
| 2340 | LInstruction* LChunkBuilder::DoTrapAllocationMemento( |
| 2341 | HTrapAllocationMemento* instr) { |
| 2342 | LOperand* object = UseRegister(instr->object()); |
| 2343 | LOperand* temp = TempRegister(); |
| 2344 | LTrapAllocationMemento* result = |
| 2345 | new(zone()) LTrapAllocationMemento(object, temp); |
| 2346 | return AssignEnvironment(result); |
| 2347 | } |
| 2348 | |
| 2349 | |
| 2350 | LInstruction* LChunkBuilder::DoMaybeGrowElements(HMaybeGrowElements* instr) { |
| 2351 | info()->MarkAsDeferredCalling(); |
| 2352 | LOperand* context = UseFixed(instr->context(), esi); |
| 2353 | LOperand* object = Use(instr->object()); |
| 2354 | LOperand* elements = Use(instr->elements()); |
| 2355 | LOperand* key = UseRegisterOrConstant(instr->key()); |
| 2356 | LOperand* current_capacity = UseRegisterOrConstant(instr->current_capacity()); |
| 2357 | |
| 2358 | LMaybeGrowElements* result = new (zone()) |
| 2359 | LMaybeGrowElements(context, object, elements, key, current_capacity); |
| 2360 | DefineFixed(result, eax); |
| 2361 | return AssignPointerMap(AssignEnvironment(result)); |
| 2362 | } |
| 2363 | |
| 2364 | |
| 2365 | LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) { |
| 2366 | bool is_in_object = instr->access().IsInobject(); |
| 2367 | bool is_external_location = instr->access().IsExternalMemory() && |
| 2368 | instr->access().offset() == 0; |
| 2369 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 2370 | bool needs_write_barrier_for_map = instr->has_transition() && |
| 2371 | instr->NeedsWriteBarrierForMap(); |
| 2372 | |
| 2373 | LOperand* obj; |
| 2374 | if (needs_write_barrier) { |
| 2375 | obj = is_in_object |
| 2376 | ? UseRegister(instr->object()) |
| 2377 | : UseTempRegister(instr->object()); |
| 2378 | } else if (is_external_location) { |
| 2379 | DCHECK(!is_in_object); |
| 2380 | DCHECK(!needs_write_barrier); |
| 2381 | DCHECK(!needs_write_barrier_for_map); |
| 2382 | obj = UseRegisterOrConstant(instr->object()); |
| 2383 | } else { |
| 2384 | obj = needs_write_barrier_for_map |
| 2385 | ? UseRegister(instr->object()) |
| 2386 | : UseRegisterAtStart(instr->object()); |
| 2387 | } |
| 2388 | |
| 2389 | bool can_be_constant = instr->value()->IsConstant() && |
| 2390 | HConstant::cast(instr->value())->NotInNewSpace() && |
| 2391 | !instr->field_representation().IsDouble(); |
| 2392 | |
| 2393 | LOperand* val; |
| 2394 | if (instr->field_representation().IsInteger8() || |
| 2395 | instr->field_representation().IsUInteger8()) { |
| 2396 | // mov_b requires a byte register (i.e. any of eax, ebx, ecx, edx). |
| 2397 | // Just force the value to be in eax and we're safe here. |
| 2398 | val = UseFixed(instr->value(), eax); |
| 2399 | } else if (needs_write_barrier) { |
| 2400 | val = UseTempRegister(instr->value()); |
| 2401 | } else if (can_be_constant) { |
| 2402 | val = UseRegisterOrConstant(instr->value()); |
| 2403 | } else if (instr->field_representation().IsDouble()) { |
| 2404 | val = UseRegisterAtStart(instr->value()); |
| 2405 | } else { |
| 2406 | val = UseRegister(instr->value()); |
| 2407 | } |
| 2408 | |
| 2409 | // We only need a scratch register if we have a write barrier or we |
| 2410 | // have a store into the properties array (not in-object-property). |
| 2411 | LOperand* temp = (!is_in_object || needs_write_barrier || |
| 2412 | needs_write_barrier_for_map) ? TempRegister() : NULL; |
| 2413 | |
| 2414 | // We need a temporary register for write barrier of the map field. |
| 2415 | LOperand* temp_map = needs_write_barrier_for_map ? TempRegister() : NULL; |
| 2416 | |
| 2417 | return new(zone()) LStoreNamedField(obj, val, temp, temp_map); |
| 2418 | } |
| 2419 | |
| 2420 | |
| 2421 | LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) { |
| 2422 | LOperand* context = UseFixed(instr->context(), esi); |
| 2423 | LOperand* object = |
| 2424 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 2425 | LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
| 2426 | LOperand* slot = NULL; |
| 2427 | LOperand* vector = NULL; |
| 2428 | if (instr->HasVectorAndSlot()) { |
| 2429 | slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 2430 | vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
| 2431 | } |
| 2432 | |
| 2433 | LStoreNamedGeneric* result = |
| 2434 | new (zone()) LStoreNamedGeneric(context, object, value, slot, vector); |
| 2435 | return MarkAsCall(result, instr); |
| 2436 | } |
| 2437 | |
| 2438 | |
| 2439 | LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) { |
| 2440 | LOperand* context = UseFixed(instr->context(), esi); |
| 2441 | LOperand* left = UseFixed(instr->left(), edx); |
| 2442 | LOperand* right = UseFixed(instr->right(), eax); |
| 2443 | LStringAdd* string_add = new(zone()) LStringAdd(context, left, right); |
| 2444 | return MarkAsCall(DefineFixed(string_add, eax), instr); |
| 2445 | } |
| 2446 | |
| 2447 | |
| 2448 | LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) { |
| 2449 | LOperand* string = UseTempRegister(instr->string()); |
| 2450 | LOperand* index = UseTempRegister(instr->index()); |
| 2451 | LOperand* context = UseAny(instr->context()); |
| 2452 | LStringCharCodeAt* result = |
| 2453 | new(zone()) LStringCharCodeAt(context, string, index); |
| 2454 | return AssignPointerMap(DefineAsRegister(result)); |
| 2455 | } |
| 2456 | |
| 2457 | |
| 2458 | LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) { |
| 2459 | LOperand* char_code = UseRegister(instr->value()); |
| 2460 | LOperand* context = UseAny(instr->context()); |
| 2461 | LStringCharFromCode* result = |
| 2462 | new(zone()) LStringCharFromCode(context, char_code); |
| 2463 | return AssignPointerMap(DefineAsRegister(result)); |
| 2464 | } |
| 2465 | |
| 2466 | |
| 2467 | LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) { |
| 2468 | info()->MarkAsDeferredCalling(); |
| 2469 | LOperand* context = UseAny(instr->context()); |
| 2470 | LOperand* size = instr->size()->IsConstant() |
| 2471 | ? UseConstant(instr->size()) |
| 2472 | : UseTempRegister(instr->size()); |
| 2473 | LOperand* temp = TempRegister(); |
| 2474 | LAllocate* result = new(zone()) LAllocate(context, size, temp); |
| 2475 | return AssignPointerMap(DefineAsRegister(result)); |
| 2476 | } |
| 2477 | |
| 2478 | |
| 2479 | LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) { |
| 2480 | DCHECK(argument_count_ == 0); |
| 2481 | allocator_->MarkAsOsrEntry(); |
| 2482 | current_block_->last_environment()->set_ast_id(instr->ast_id()); |
| 2483 | return AssignEnvironment(new(zone()) LOsrEntry); |
| 2484 | } |
| 2485 | |
| 2486 | |
| 2487 | LInstruction* LChunkBuilder::DoParameter(HParameter* instr) { |
| 2488 | LParameter* result = new(zone()) LParameter; |
| 2489 | if (instr->kind() == HParameter::STACK_PARAMETER) { |
| 2490 | int spill_index = chunk()->GetParameterStackSlot(instr->index()); |
| 2491 | return DefineAsSpilled(result, spill_index); |
| 2492 | } else { |
| 2493 | DCHECK(info()->IsStub()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2494 | CallInterfaceDescriptor descriptor = graph()->descriptor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2495 | int index = static_cast<int>(instr->index()); |
| 2496 | Register reg = descriptor.GetRegisterParameter(index); |
| 2497 | return DefineFixed(result, reg); |
| 2498 | } |
| 2499 | } |
| 2500 | |
| 2501 | |
| 2502 | LInstruction* LChunkBuilder::DoUnknownOSRValue(HUnknownOSRValue* instr) { |
| 2503 | // Use an index that corresponds to the location in the unoptimized frame, |
| 2504 | // which the optimized frame will subsume. |
| 2505 | int env_index = instr->index(); |
| 2506 | int spill_index = 0; |
| 2507 | if (instr->environment()->is_parameter_index(env_index)) { |
| 2508 | spill_index = chunk()->GetParameterStackSlot(env_index); |
| 2509 | } else { |
| 2510 | spill_index = env_index - instr->environment()->first_local_index(); |
| 2511 | if (spill_index > LUnallocated::kMaxFixedSlotIndex) { |
| 2512 | Retry(kNotEnoughSpillSlotsForOsr); |
| 2513 | spill_index = 0; |
| 2514 | } |
| 2515 | if (spill_index == 0) { |
| 2516 | // The dynamic frame alignment state overwrites the first local. |
| 2517 | // The first local is saved at the end of the unoptimized frame. |
| 2518 | spill_index = graph()->osr()->UnoptimizedFrameSlots(); |
| 2519 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 2520 | spill_index += StandardFrameConstants::kFixedSlotCount; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2521 | } |
| 2522 | return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index); |
| 2523 | } |
| 2524 | |
| 2525 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2526 | LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) { |
| 2527 | // There are no real uses of the arguments object. |
| 2528 | // arguments.length and element access are supported directly on |
| 2529 | // stack arguments, and any real arguments object use causes a bailout. |
| 2530 | // So this value is never used. |
| 2531 | return NULL; |
| 2532 | } |
| 2533 | |
| 2534 | |
| 2535 | LInstruction* LChunkBuilder::DoCapturedObject(HCapturedObject* instr) { |
| 2536 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2537 | |
| 2538 | // There are no real uses of a captured object. |
| 2539 | return NULL; |
| 2540 | } |
| 2541 | |
| 2542 | |
| 2543 | LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) { |
| 2544 | info()->MarkAsRequiresFrame(); |
| 2545 | LOperand* args = UseRegister(instr->arguments()); |
| 2546 | LOperand* length; |
| 2547 | LOperand* index; |
| 2548 | if (instr->length()->IsConstant() && instr->index()->IsConstant()) { |
| 2549 | length = UseRegisterOrConstant(instr->length()); |
| 2550 | index = UseOrConstant(instr->index()); |
| 2551 | } else { |
| 2552 | length = UseTempRegister(instr->length()); |
| 2553 | index = Use(instr->index()); |
| 2554 | } |
| 2555 | return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index)); |
| 2556 | } |
| 2557 | |
| 2558 | |
| 2559 | LInstruction* LChunkBuilder::DoToFastProperties(HToFastProperties* instr) { |
| 2560 | LOperand* object = UseFixed(instr->value(), eax); |
| 2561 | LToFastProperties* result = new(zone()) LToFastProperties(object); |
| 2562 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 2563 | } |
| 2564 | |
| 2565 | |
| 2566 | LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) { |
| 2567 | LOperand* context = UseFixed(instr->context(), esi); |
| 2568 | LOperand* value = UseFixed(instr->value(), ebx); |
| 2569 | LTypeof* result = new(zone()) LTypeof(context, value); |
| 2570 | return MarkAsCall(DefineFixed(result, eax), instr); |
| 2571 | } |
| 2572 | |
| 2573 | |
| 2574 | LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) { |
| 2575 | return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value())); |
| 2576 | } |
| 2577 | |
| 2578 | |
| 2579 | LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) { |
| 2580 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2581 | return NULL; |
| 2582 | } |
| 2583 | |
| 2584 | |
| 2585 | LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { |
| 2586 | info()->MarkAsDeferredCalling(); |
| 2587 | if (instr->is_function_entry()) { |
| 2588 | LOperand* context = UseFixed(instr->context(), esi); |
| 2589 | return MarkAsCall(new(zone()) LStackCheck(context), instr); |
| 2590 | } else { |
| 2591 | DCHECK(instr->is_backwards_branch()); |
| 2592 | LOperand* context = UseAny(instr->context()); |
| 2593 | return AssignEnvironment( |
| 2594 | AssignPointerMap(new(zone()) LStackCheck(context))); |
| 2595 | } |
| 2596 | } |
| 2597 | |
| 2598 | |
| 2599 | LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) { |
| 2600 | HEnvironment* outer = current_block_->last_environment(); |
| 2601 | outer->set_ast_id(instr->ReturnId()); |
| 2602 | HConstant* undefined = graph()->GetConstantUndefined(); |
| 2603 | HEnvironment* inner = outer->CopyForInlining(instr->closure(), |
| 2604 | instr->arguments_count(), |
| 2605 | instr->function(), |
| 2606 | undefined, |
| 2607 | instr->inlining_kind()); |
| 2608 | // Only replay binding of arguments object if it wasn't removed from graph. |
| 2609 | if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) { |
| 2610 | inner->Bind(instr->arguments_var(), instr->arguments_object()); |
| 2611 | } |
| 2612 | inner->BindContext(instr->closure_context()); |
| 2613 | inner->set_entry(instr); |
| 2614 | current_block_->UpdateEnvironment(inner); |
| 2615 | chunk_->AddInlinedFunction(instr->shared()); |
| 2616 | return NULL; |
| 2617 | } |
| 2618 | |
| 2619 | |
| 2620 | LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
| 2621 | LInstruction* pop = NULL; |
| 2622 | |
| 2623 | HEnvironment* env = current_block_->last_environment(); |
| 2624 | |
| 2625 | if (env->entry()->arguments_pushed()) { |
| 2626 | int argument_count = env->arguments_environment()->parameter_count(); |
| 2627 | pop = new(zone()) LDrop(argument_count); |
| 2628 | DCHECK(instr->argument_delta() == -argument_count); |
| 2629 | } |
| 2630 | |
| 2631 | HEnvironment* outer = current_block_->last_environment()-> |
| 2632 | DiscardInlined(false); |
| 2633 | current_block_->UpdateEnvironment(outer); |
| 2634 | return pop; |
| 2635 | } |
| 2636 | |
| 2637 | |
| 2638 | LInstruction* LChunkBuilder::DoForInPrepareMap(HForInPrepareMap* instr) { |
| 2639 | LOperand* context = UseFixed(instr->context(), esi); |
| 2640 | LOperand* object = UseFixed(instr->enumerable(), eax); |
| 2641 | LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object); |
| 2642 | return MarkAsCall(DefineFixed(result, eax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 2643 | } |
| 2644 | |
| 2645 | |
| 2646 | LInstruction* LChunkBuilder::DoForInCacheArray(HForInCacheArray* instr) { |
| 2647 | LOperand* map = UseRegister(instr->map()); |
| 2648 | return AssignEnvironment(DefineAsRegister( |
| 2649 | new(zone()) LForInCacheArray(map))); |
| 2650 | } |
| 2651 | |
| 2652 | |
| 2653 | LInstruction* LChunkBuilder::DoCheckMapValue(HCheckMapValue* instr) { |
| 2654 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 2655 | LOperand* map = UseRegisterAtStart(instr->map()); |
| 2656 | return AssignEnvironment(new(zone()) LCheckMapValue(value, map)); |
| 2657 | } |
| 2658 | |
| 2659 | |
| 2660 | LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2661 | LOperand* object = UseRegister(instr->object()); |
| 2662 | LOperand* index = UseTempRegister(instr->index()); |
| 2663 | LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index); |
| 2664 | LInstruction* result = DefineSameAsFirst(load); |
| 2665 | return AssignPointerMap(result); |
| 2666 | } |
| 2667 | |
| 2668 | |
| 2669 | LInstruction* LChunkBuilder::DoStoreFrameContext(HStoreFrameContext* instr) { |
| 2670 | LOperand* context = UseRegisterAtStart(instr->context()); |
| 2671 | return new(zone()) LStoreFrameContext(context); |
| 2672 | } |
| 2673 | |
| 2674 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2675 | } // namespace internal |
| 2676 | } // namespace v8 |
| 2677 | |
| 2678 | #endif // V8_TARGET_ARCH_X87 |