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/x64/lithium-x64.h" |
| 6 | |
| 7 | #include <sstream> |
| 8 | |
| 9 | #if V8_TARGET_ARCH_X64 |
| 10 | |
| 11 | #include "src/crankshaft/hydrogen-osr.h" |
| 12 | #include "src/crankshaft/lithium-inl.h" |
| 13 | #include "src/crankshaft/x64/lithium-codegen-x64.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 | void LInstruction::PrintTo(StringStream* stream) { |
| 49 | stream->Add("%s ", this->Mnemonic()); |
| 50 | |
| 51 | PrintOutputOperandTo(stream); |
| 52 | |
| 53 | PrintDataTo(stream); |
| 54 | |
| 55 | if (HasEnvironment()) { |
| 56 | stream->Add(" "); |
| 57 | environment()->PrintTo(stream); |
| 58 | } |
| 59 | |
| 60 | if (HasPointerMap()) { |
| 61 | stream->Add(" "); |
| 62 | pointer_map()->PrintTo(stream); |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | |
| 67 | void LInstruction::PrintDataTo(StringStream* stream) { |
| 68 | stream->Add("= "); |
| 69 | for (int i = 0; i < InputCount(); i++) { |
| 70 | if (i > 0) stream->Add(" "); |
| 71 | if (InputAt(i) == NULL) { |
| 72 | stream->Add("NULL"); |
| 73 | } else { |
| 74 | InputAt(i)->PrintTo(stream); |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | |
| 80 | void LInstruction::PrintOutputOperandTo(StringStream* stream) { |
| 81 | if (HasResult()) result()->PrintTo(stream); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | void LLabel::PrintDataTo(StringStream* stream) { |
| 86 | LGap::PrintDataTo(stream); |
| 87 | LLabel* rep = replacement(); |
| 88 | if (rep != NULL) { |
| 89 | stream->Add(" Dead block replaced with B%d", rep->block_id()); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | |
| 94 | bool LGap::IsRedundant() const { |
| 95 | for (int i = 0; i < 4; i++) { |
| 96 | if (parallel_moves_[i] != NULL && !parallel_moves_[i]->IsRedundant()) { |
| 97 | return false; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | return true; |
| 102 | } |
| 103 | |
| 104 | |
| 105 | void LGap::PrintDataTo(StringStream* stream) { |
| 106 | for (int i = 0; i < 4; i++) { |
| 107 | stream->Add("("); |
| 108 | if (parallel_moves_[i] != NULL) { |
| 109 | parallel_moves_[i]->PrintDataTo(stream); |
| 110 | } |
| 111 | stream->Add(") "); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | |
| 116 | const char* LArithmeticD::Mnemonic() const { |
| 117 | switch (op()) { |
| 118 | case Token::ADD: return "add-d"; |
| 119 | case Token::SUB: return "sub-d"; |
| 120 | case Token::MUL: return "mul-d"; |
| 121 | case Token::DIV: return "div-d"; |
| 122 | case Token::MOD: return "mod-d"; |
| 123 | default: |
| 124 | UNREACHABLE(); |
| 125 | return NULL; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | |
| 130 | const char* LArithmeticT::Mnemonic() const { |
| 131 | switch (op()) { |
| 132 | case Token::ADD: return "add-t"; |
| 133 | case Token::SUB: return "sub-t"; |
| 134 | case Token::MUL: return "mul-t"; |
| 135 | case Token::MOD: return "mod-t"; |
| 136 | case Token::DIV: return "div-t"; |
| 137 | case Token::BIT_AND: return "bit-and-t"; |
| 138 | case Token::BIT_OR: return "bit-or-t"; |
| 139 | case Token::BIT_XOR: return "bit-xor-t"; |
| 140 | case Token::ROR: return "ror-t"; |
| 141 | case Token::SHL: return "sal-t"; |
| 142 | case Token::SAR: return "sar-t"; |
| 143 | case Token::SHR: return "shr-t"; |
| 144 | default: |
| 145 | UNREACHABLE(); |
| 146 | return NULL; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | |
| 151 | bool LGoto::HasInterestingComment(LCodeGen* gen) const { |
| 152 | return !gen->IsNextEmittedBlock(block_id()); |
| 153 | } |
| 154 | |
| 155 | |
| 156 | template<int R> |
| 157 | bool LTemplateResultInstruction<R>::MustSignExtendResult( |
| 158 | LPlatformChunk* chunk) const { |
| 159 | HValue* hvalue = this->hydrogen_value(); |
| 160 | return hvalue != NULL && |
| 161 | hvalue->representation().IsInteger32() && |
| 162 | chunk->GetDehoistedKeyIds()->Contains(hvalue->id()); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | void LGoto::PrintDataTo(StringStream* stream) { |
| 167 | stream->Add("B%d", block_id()); |
| 168 | } |
| 169 | |
| 170 | |
| 171 | void LBranch::PrintDataTo(StringStream* stream) { |
| 172 | stream->Add("B%d | B%d on ", true_block_id(), false_block_id()); |
| 173 | value()->PrintTo(stream); |
| 174 | } |
| 175 | |
| 176 | |
| 177 | void LCompareNumericAndBranch::PrintDataTo(StringStream* stream) { |
| 178 | stream->Add("if "); |
| 179 | left()->PrintTo(stream); |
| 180 | stream->Add(" %s ", Token::String(op())); |
| 181 | right()->PrintTo(stream); |
| 182 | stream->Add(" then B%d else B%d", true_block_id(), false_block_id()); |
| 183 | } |
| 184 | |
| 185 | |
| 186 | void LIsStringAndBranch::PrintDataTo(StringStream* stream) { |
| 187 | stream->Add("if is_string("); |
| 188 | value()->PrintTo(stream); |
| 189 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 190 | } |
| 191 | |
| 192 | |
| 193 | void LIsSmiAndBranch::PrintDataTo(StringStream* stream) { |
| 194 | stream->Add("if is_smi("); |
| 195 | value()->PrintTo(stream); |
| 196 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 197 | } |
| 198 | |
| 199 | |
| 200 | void LIsUndetectableAndBranch::PrintDataTo(StringStream* stream) { |
| 201 | stream->Add("if is_undetectable("); |
| 202 | value()->PrintTo(stream); |
| 203 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 204 | } |
| 205 | |
| 206 | |
| 207 | void LStringCompareAndBranch::PrintDataTo(StringStream* stream) { |
| 208 | stream->Add("if string_compare("); |
| 209 | left()->PrintTo(stream); |
| 210 | right()->PrintTo(stream); |
| 211 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 212 | } |
| 213 | |
| 214 | |
| 215 | void LHasInstanceTypeAndBranch::PrintDataTo(StringStream* stream) { |
| 216 | stream->Add("if has_instance_type("); |
| 217 | value()->PrintTo(stream); |
| 218 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 219 | } |
| 220 | |
| 221 | |
| 222 | void LHasCachedArrayIndexAndBranch::PrintDataTo(StringStream* stream) { |
| 223 | stream->Add("if has_cached_array_index("); |
| 224 | value()->PrintTo(stream); |
| 225 | stream->Add(") then B%d else B%d", true_block_id(), false_block_id()); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | void LClassOfTestAndBranch::PrintDataTo(StringStream* stream) { |
| 230 | stream->Add("if class_of_test("); |
| 231 | value()->PrintTo(stream); |
| 232 | stream->Add(", \"%o\") then B%d else B%d", |
| 233 | *hydrogen()->class_name(), |
| 234 | true_block_id(), |
| 235 | false_block_id()); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | void LTypeofIsAndBranch::PrintDataTo(StringStream* stream) { |
| 240 | stream->Add("if typeof "); |
| 241 | value()->PrintTo(stream); |
| 242 | stream->Add(" == \"%s\" then B%d else B%d", |
| 243 | hydrogen()->type_literal()->ToCString().get(), |
| 244 | true_block_id(), false_block_id()); |
| 245 | } |
| 246 | |
| 247 | |
| 248 | void LStoreCodeEntry::PrintDataTo(StringStream* stream) { |
| 249 | stream->Add(" = "); |
| 250 | function()->PrintTo(stream); |
| 251 | stream->Add(".code_entry = "); |
| 252 | code_object()->PrintTo(stream); |
| 253 | } |
| 254 | |
| 255 | |
| 256 | void LInnerAllocatedObject::PrintDataTo(StringStream* stream) { |
| 257 | stream->Add(" = "); |
| 258 | base_object()->PrintTo(stream); |
| 259 | stream->Add(" + "); |
| 260 | offset()->PrintTo(stream); |
| 261 | } |
| 262 | |
| 263 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 264 | void LCallWithDescriptor::PrintDataTo(StringStream* stream) { |
| 265 | for (int i = 0; i < InputCount(); i++) { |
| 266 | InputAt(i)->PrintTo(stream); |
| 267 | stream->Add(" "); |
| 268 | } |
| 269 | stream->Add("#%d / ", arity()); |
| 270 | } |
| 271 | |
| 272 | |
| 273 | void LLoadContextSlot::PrintDataTo(StringStream* stream) { |
| 274 | context()->PrintTo(stream); |
| 275 | stream->Add("[%d]", slot_index()); |
| 276 | } |
| 277 | |
| 278 | |
| 279 | void LStoreContextSlot::PrintDataTo(StringStream* stream) { |
| 280 | context()->PrintTo(stream); |
| 281 | stream->Add("[%d] <- ", slot_index()); |
| 282 | value()->PrintTo(stream); |
| 283 | } |
| 284 | |
| 285 | |
| 286 | void LInvokeFunction::PrintDataTo(StringStream* stream) { |
| 287 | stream->Add("= "); |
| 288 | function()->PrintTo(stream); |
| 289 | stream->Add(" #%d / ", arity()); |
| 290 | } |
| 291 | |
| 292 | |
| 293 | void LCallNewArray::PrintDataTo(StringStream* stream) { |
| 294 | stream->Add("= "); |
| 295 | constructor()->PrintTo(stream); |
| 296 | stream->Add(" #%d / ", arity()); |
| 297 | ElementsKind kind = hydrogen()->elements_kind(); |
| 298 | stream->Add(" (%s) ", ElementsKindToString(kind)); |
| 299 | } |
| 300 | |
| 301 | |
| 302 | void LAccessArgumentsAt::PrintDataTo(StringStream* stream) { |
| 303 | arguments()->PrintTo(stream); |
| 304 | |
| 305 | stream->Add(" length "); |
| 306 | length()->PrintTo(stream); |
| 307 | |
| 308 | stream->Add(" index "); |
| 309 | index()->PrintTo(stream); |
| 310 | } |
| 311 | |
| 312 | |
| 313 | int LPlatformChunk::GetNextSpillIndex(RegisterKind kind) { |
| 314 | if (kind == DOUBLE_REGISTERS && kDoubleSize == 2 * kPointerSize) { |
| 315 | // Skip a slot if for a double-width slot for x32 port. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 316 | current_frame_slots_++; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 317 | // The spill slot's address is at rbp - (index + 1) * kPointerSize - |
| 318 | // StandardFrameConstants::kFixedFrameSizeFromFp. kFixedFrameSizeFromFp is |
| 319 | // 2 * kPointerSize, if rbp is aligned at 8-byte boundary, the below "|= 1" |
| 320 | // will make sure the spilled doubles are aligned at 8-byte boundary. |
| 321 | // TODO(haitao): make sure rbp is aligned at 8-byte boundary for x32 port. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 322 | current_frame_slots_ |= 1; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 323 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 324 | return current_frame_slots_++; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | |
| 328 | LOperand* LPlatformChunk::GetNextSpillSlot(RegisterKind kind) { |
| 329 | // All stack slots are Double stack slots on x64. |
| 330 | // Alternatively, at some point, start using half-size |
| 331 | // stack slots for int32 values. |
| 332 | int index = GetNextSpillIndex(kind); |
| 333 | if (kind == DOUBLE_REGISTERS) { |
| 334 | return LDoubleStackSlot::Create(index, zone()); |
| 335 | } else { |
| 336 | DCHECK(kind == GENERAL_REGISTERS); |
| 337 | return LStackSlot::Create(index, zone()); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | |
| 342 | void LStoreNamedField::PrintDataTo(StringStream* stream) { |
| 343 | object()->PrintTo(stream); |
| 344 | std::ostringstream os; |
| 345 | os << hydrogen()->access() << " <- "; |
| 346 | stream->Add(os.str().c_str()); |
| 347 | value()->PrintTo(stream); |
| 348 | } |
| 349 | |
| 350 | |
| 351 | void LStoreNamedGeneric::PrintDataTo(StringStream* stream) { |
| 352 | object()->PrintTo(stream); |
| 353 | stream->Add("."); |
| 354 | stream->Add(String::cast(*name())->ToCString().get()); |
| 355 | stream->Add(" <- "); |
| 356 | value()->PrintTo(stream); |
| 357 | } |
| 358 | |
| 359 | |
| 360 | void LLoadKeyed::PrintDataTo(StringStream* stream) { |
| 361 | elements()->PrintTo(stream); |
| 362 | stream->Add("["); |
| 363 | key()->PrintTo(stream); |
| 364 | if (hydrogen()->IsDehoisted()) { |
| 365 | stream->Add(" + %d]", base_offset()); |
| 366 | } else { |
| 367 | stream->Add("]"); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | |
| 372 | void LStoreKeyed::PrintDataTo(StringStream* stream) { |
| 373 | elements()->PrintTo(stream); |
| 374 | stream->Add("["); |
| 375 | key()->PrintTo(stream); |
| 376 | if (hydrogen()->IsDehoisted()) { |
| 377 | stream->Add(" + %d] <-", base_offset()); |
| 378 | } else { |
| 379 | stream->Add("] <- "); |
| 380 | } |
| 381 | |
| 382 | if (value() == NULL) { |
| 383 | DCHECK(hydrogen()->IsConstantHoleStore() && |
| 384 | hydrogen()->value()->representation().IsDouble()); |
| 385 | stream->Add("<the hole(nan)>"); |
| 386 | } else { |
| 387 | value()->PrintTo(stream); |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | |
| 392 | void LStoreKeyedGeneric::PrintDataTo(StringStream* stream) { |
| 393 | object()->PrintTo(stream); |
| 394 | stream->Add("["); |
| 395 | key()->PrintTo(stream); |
| 396 | stream->Add("] <- "); |
| 397 | value()->PrintTo(stream); |
| 398 | } |
| 399 | |
| 400 | |
| 401 | void LTransitionElementsKind::PrintDataTo(StringStream* stream) { |
| 402 | object()->PrintTo(stream); |
| 403 | stream->Add(" %p -> %p", *original_map(), *transitioned_map()); |
| 404 | } |
| 405 | |
| 406 | |
| 407 | LPlatformChunk* LChunkBuilder::Build() { |
| 408 | DCHECK(is_unused()); |
| 409 | chunk_ = new(zone()) LPlatformChunk(info(), graph()); |
| 410 | LPhase phase("L_Building chunk", chunk_); |
| 411 | status_ = BUILDING; |
| 412 | |
| 413 | // If compiling for OSR, reserve space for the unoptimized frame, |
| 414 | // which will be subsumed into this frame. |
| 415 | if (graph()->has_osr()) { |
| 416 | for (int i = graph()->osr()->UnoptimizedFrameSlots(); i > 0; i--) { |
| 417 | chunk_->GetNextSpillIndex(GENERAL_REGISTERS); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | const ZoneList<HBasicBlock*>* blocks = graph()->blocks(); |
| 422 | for (int i = 0; i < blocks->length(); i++) { |
| 423 | HBasicBlock* next = NULL; |
| 424 | if (i < blocks->length() - 1) next = blocks->at(i + 1); |
| 425 | DoBasicBlock(blocks->at(i), next); |
| 426 | if (is_aborted()) return NULL; |
| 427 | } |
| 428 | status_ = DONE; |
| 429 | return chunk_; |
| 430 | } |
| 431 | |
| 432 | |
| 433 | LUnallocated* LChunkBuilder::ToUnallocated(Register reg) { |
| 434 | return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER, reg.code()); |
| 435 | } |
| 436 | |
| 437 | |
| 438 | LUnallocated* LChunkBuilder::ToUnallocated(XMMRegister reg) { |
| 439 | return new (zone()) |
| 440 | LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, reg.code()); |
| 441 | } |
| 442 | |
| 443 | |
| 444 | LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) { |
| 445 | return Use(value, ToUnallocated(fixed_register)); |
| 446 | } |
| 447 | |
| 448 | |
| 449 | LOperand* LChunkBuilder::UseFixedDouble(HValue* value, XMMRegister reg) { |
| 450 | return Use(value, ToUnallocated(reg)); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | LOperand* LChunkBuilder::UseRegister(HValue* value) { |
| 455 | return Use(value, new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 456 | } |
| 457 | |
| 458 | |
| 459 | LOperand* LChunkBuilder::UseRegisterAtStart(HValue* value) { |
| 460 | return Use(value, |
| 461 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER, |
| 462 | LUnallocated::USED_AT_START)); |
| 463 | } |
| 464 | |
| 465 | |
| 466 | LOperand* LChunkBuilder::UseTempRegister(HValue* value) { |
| 467 | return Use(value, new(zone()) LUnallocated(LUnallocated::WRITABLE_REGISTER)); |
| 468 | } |
| 469 | |
| 470 | |
| 471 | LOperand* LChunkBuilder::UseTempRegisterOrConstant(HValue* value) { |
| 472 | return value->IsConstant() |
| 473 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 474 | : UseTempRegister(value); |
| 475 | } |
| 476 | |
| 477 | |
| 478 | LOperand* LChunkBuilder::Use(HValue* value) { |
| 479 | return Use(value, new(zone()) LUnallocated(LUnallocated::NONE)); |
| 480 | } |
| 481 | |
| 482 | |
| 483 | LOperand* LChunkBuilder::UseAtStart(HValue* value) { |
| 484 | return Use(value, new(zone()) LUnallocated(LUnallocated::NONE, |
| 485 | LUnallocated::USED_AT_START)); |
| 486 | } |
| 487 | |
| 488 | |
| 489 | LOperand* LChunkBuilder::UseOrConstant(HValue* value) { |
| 490 | return value->IsConstant() |
| 491 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 492 | : Use(value); |
| 493 | } |
| 494 | |
| 495 | |
| 496 | LOperand* LChunkBuilder::UseOrConstantAtStart(HValue* value) { |
| 497 | return value->IsConstant() |
| 498 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 499 | : UseAtStart(value); |
| 500 | } |
| 501 | |
| 502 | |
| 503 | LOperand* LChunkBuilder::UseRegisterOrConstant(HValue* value) { |
| 504 | return value->IsConstant() |
| 505 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 506 | : UseRegister(value); |
| 507 | } |
| 508 | |
| 509 | |
| 510 | LOperand* LChunkBuilder::UseRegisterOrConstantAtStart(HValue* value) { |
| 511 | return value->IsConstant() |
| 512 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 513 | : UseRegisterAtStart(value); |
| 514 | } |
| 515 | |
| 516 | |
| 517 | LOperand* LChunkBuilder::UseConstant(HValue* value) { |
| 518 | return chunk_->DefineConstantOperand(HConstant::cast(value)); |
| 519 | } |
| 520 | |
| 521 | |
| 522 | LOperand* LChunkBuilder::UseAny(HValue* value) { |
| 523 | return value->IsConstant() |
| 524 | ? chunk_->DefineConstantOperand(HConstant::cast(value)) |
| 525 | : Use(value, new(zone()) LUnallocated(LUnallocated::ANY)); |
| 526 | } |
| 527 | |
| 528 | |
| 529 | LOperand* LChunkBuilder::Use(HValue* value, LUnallocated* operand) { |
| 530 | if (value->EmitAtUses()) { |
| 531 | HInstruction* instr = HInstruction::cast(value); |
| 532 | VisitInstruction(instr); |
| 533 | } |
| 534 | operand->set_virtual_register(value->id()); |
| 535 | return operand; |
| 536 | } |
| 537 | |
| 538 | |
| 539 | LInstruction* LChunkBuilder::Define(LTemplateResultInstruction<1>* instr, |
| 540 | LUnallocated* result) { |
| 541 | result->set_virtual_register(current_instruction_->id()); |
| 542 | instr->set_result(result); |
| 543 | return instr; |
| 544 | } |
| 545 | |
| 546 | |
| 547 | LInstruction* LChunkBuilder::DefineAsRegister( |
| 548 | LTemplateResultInstruction<1>* instr) { |
| 549 | return Define(instr, |
| 550 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER)); |
| 551 | } |
| 552 | |
| 553 | |
| 554 | LInstruction* LChunkBuilder::DefineAsSpilled( |
| 555 | LTemplateResultInstruction<1>* instr, |
| 556 | int index) { |
| 557 | return Define(instr, |
| 558 | new(zone()) LUnallocated(LUnallocated::FIXED_SLOT, index)); |
| 559 | } |
| 560 | |
| 561 | |
| 562 | LInstruction* LChunkBuilder::DefineSameAsFirst( |
| 563 | LTemplateResultInstruction<1>* instr) { |
| 564 | return Define(instr, |
| 565 | new(zone()) LUnallocated(LUnallocated::SAME_AS_FIRST_INPUT)); |
| 566 | } |
| 567 | |
| 568 | |
| 569 | LInstruction* LChunkBuilder::DefineFixed(LTemplateResultInstruction<1>* instr, |
| 570 | Register reg) { |
| 571 | return Define(instr, ToUnallocated(reg)); |
| 572 | } |
| 573 | |
| 574 | |
| 575 | LInstruction* LChunkBuilder::DefineFixedDouble( |
| 576 | LTemplateResultInstruction<1>* instr, |
| 577 | XMMRegister reg) { |
| 578 | return Define(instr, ToUnallocated(reg)); |
| 579 | } |
| 580 | |
| 581 | |
| 582 | LInstruction* LChunkBuilder::AssignEnvironment(LInstruction* instr) { |
| 583 | HEnvironment* hydrogen_env = current_block_->last_environment(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 584 | return LChunkBuilderBase::AssignEnvironment(instr, hydrogen_env); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | |
| 588 | LInstruction* LChunkBuilder::MarkAsCall(LInstruction* instr, |
| 589 | HInstruction* hinstr, |
| 590 | CanDeoptimize can_deoptimize) { |
| 591 | info()->MarkAsNonDeferredCalling(); |
| 592 | |
| 593 | #ifdef DEBUG |
| 594 | instr->VerifyCall(); |
| 595 | #endif |
| 596 | instr->MarkAsCall(); |
| 597 | instr = AssignPointerMap(instr); |
| 598 | |
| 599 | // If instruction does not have side-effects lazy deoptimization |
| 600 | // after the call will try to deoptimize to the point before the call. |
| 601 | // Thus we still need to attach environment to this call even if |
| 602 | // call sequence can not deoptimize eagerly. |
| 603 | bool needs_environment = |
| 604 | (can_deoptimize == CAN_DEOPTIMIZE_EAGERLY) || |
| 605 | !hinstr->HasObservableSideEffects(); |
| 606 | if (needs_environment && !instr->HasEnvironment()) { |
| 607 | instr = AssignEnvironment(instr); |
| 608 | // We can't really figure out if the environment is needed or not. |
| 609 | instr->environment()->set_has_been_used(); |
| 610 | } |
| 611 | |
| 612 | return instr; |
| 613 | } |
| 614 | |
| 615 | |
| 616 | LInstruction* LChunkBuilder::AssignPointerMap(LInstruction* instr) { |
| 617 | DCHECK(!instr->HasPointerMap()); |
| 618 | instr->set_pointer_map(new(zone()) LPointerMap(zone())); |
| 619 | return instr; |
| 620 | } |
| 621 | |
| 622 | |
| 623 | LUnallocated* LChunkBuilder::TempRegister() { |
| 624 | LUnallocated* operand = |
| 625 | new(zone()) LUnallocated(LUnallocated::MUST_HAVE_REGISTER); |
| 626 | int vreg = allocator_->GetVirtualRegister(); |
| 627 | if (!allocator_->AllocationOk()) { |
| 628 | Abort(kOutOfVirtualRegistersWhileTryingToAllocateTempRegister); |
| 629 | vreg = 0; |
| 630 | } |
| 631 | operand->set_virtual_register(vreg); |
| 632 | return operand; |
| 633 | } |
| 634 | |
| 635 | |
| 636 | LOperand* LChunkBuilder::FixedTemp(Register reg) { |
| 637 | LUnallocated* operand = ToUnallocated(reg); |
| 638 | DCHECK(operand->HasFixedPolicy()); |
| 639 | return operand; |
| 640 | } |
| 641 | |
| 642 | |
| 643 | LOperand* LChunkBuilder::FixedTemp(XMMRegister reg) { |
| 644 | LUnallocated* operand = ToUnallocated(reg); |
| 645 | DCHECK(operand->HasFixedPolicy()); |
| 646 | return operand; |
| 647 | } |
| 648 | |
| 649 | |
| 650 | LInstruction* LChunkBuilder::DoBlockEntry(HBlockEntry* instr) { |
| 651 | return new(zone()) LLabel(instr->block()); |
| 652 | } |
| 653 | |
| 654 | |
| 655 | LInstruction* LChunkBuilder::DoDummyUse(HDummyUse* instr) { |
| 656 | return DefineAsRegister(new(zone()) LDummyUse(UseAny(instr->value()))); |
| 657 | } |
| 658 | |
| 659 | |
| 660 | LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) { |
| 661 | UNREACHABLE(); |
| 662 | return NULL; |
| 663 | } |
| 664 | |
| 665 | |
| 666 | LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) { |
| 667 | return AssignEnvironment(new(zone()) LDeoptimize); |
| 668 | } |
| 669 | |
| 670 | |
| 671 | LInstruction* LChunkBuilder::DoShift(Token::Value op, |
| 672 | HBitwiseBinaryOperation* instr) { |
| 673 | if (instr->representation().IsSmiOrInteger32()) { |
| 674 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 675 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 676 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 677 | |
| 678 | HValue* right_value = instr->right(); |
| 679 | LOperand* right = NULL; |
| 680 | int constant_value = 0; |
| 681 | bool does_deopt = false; |
| 682 | if (right_value->IsConstant()) { |
| 683 | HConstant* constant = HConstant::cast(right_value); |
| 684 | right = chunk_->DefineConstantOperand(constant); |
| 685 | constant_value = constant->Integer32Value() & 0x1f; |
| 686 | if (SmiValuesAre31Bits() && instr->representation().IsSmi() && |
| 687 | constant_value > 0) { |
| 688 | // Left shift can deoptimize if we shift by > 0 and the result |
| 689 | // cannot be truncated to smi. |
| 690 | does_deopt = !instr->CheckUsesForFlag(HValue::kTruncatingToSmi); |
| 691 | } |
| 692 | } else { |
| 693 | right = UseFixed(right_value, rcx); |
| 694 | } |
| 695 | |
| 696 | // Shift operations can only deoptimize if we do a logical shift by 0 and |
| 697 | // the result cannot be truncated to int32. |
| 698 | if (op == Token::SHR && constant_value == 0) { |
| 699 | does_deopt = !instr->CheckFlag(HInstruction::kUint32); |
| 700 | } |
| 701 | |
| 702 | LInstruction* result = |
| 703 | DefineSameAsFirst(new(zone()) LShiftI(op, left, right, does_deopt)); |
| 704 | return does_deopt ? AssignEnvironment(result) : result; |
| 705 | } else { |
| 706 | return DoArithmeticT(op, instr); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | |
| 711 | LInstruction* LChunkBuilder::DoArithmeticD(Token::Value op, |
| 712 | HArithmeticBinaryOperation* instr) { |
| 713 | DCHECK(instr->representation().IsDouble()); |
| 714 | DCHECK(instr->left()->representation().IsDouble()); |
| 715 | DCHECK(instr->right()->representation().IsDouble()); |
| 716 | if (op == Token::MOD) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 717 | LOperand* left = UseFixedDouble(instr->BetterLeftOperand(), xmm0); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 718 | LOperand* right = UseFixedDouble(instr->BetterRightOperand(), xmm1); |
| 719 | LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 720 | return MarkAsCall(DefineFixedDouble(result, xmm0), instr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 721 | } else { |
| 722 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 723 | LOperand* right = UseRegisterAtStart(instr->BetterRightOperand()); |
| 724 | LArithmeticD* result = new(zone()) LArithmeticD(op, left, right); |
| 725 | return CpuFeatures::IsSupported(AVX) ? DefineAsRegister(result) |
| 726 | : DefineSameAsFirst(result); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | |
| 731 | LInstruction* LChunkBuilder::DoArithmeticT(Token::Value op, |
| 732 | HBinaryOperation* instr) { |
| 733 | HValue* left = instr->left(); |
| 734 | HValue* right = instr->right(); |
| 735 | DCHECK(left->representation().IsTagged()); |
| 736 | DCHECK(right->representation().IsTagged()); |
| 737 | LOperand* context = UseFixed(instr->context(), rsi); |
| 738 | LOperand* left_operand = UseFixed(left, rdx); |
| 739 | LOperand* right_operand = UseFixed(right, rax); |
| 740 | LArithmeticT* result = |
| 741 | new(zone()) LArithmeticT(op, context, left_operand, right_operand); |
| 742 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 743 | } |
| 744 | |
| 745 | |
| 746 | void LChunkBuilder::DoBasicBlock(HBasicBlock* block, HBasicBlock* next_block) { |
| 747 | DCHECK(is_building()); |
| 748 | current_block_ = block; |
| 749 | next_block_ = next_block; |
| 750 | if (block->IsStartBlock()) { |
| 751 | block->UpdateEnvironment(graph_->start_environment()); |
| 752 | argument_count_ = 0; |
| 753 | } else if (block->predecessors()->length() == 1) { |
| 754 | // We have a single predecessor => copy environment and outgoing |
| 755 | // argument count from the predecessor. |
| 756 | DCHECK(block->phis()->length() == 0); |
| 757 | HBasicBlock* pred = block->predecessors()->at(0); |
| 758 | HEnvironment* last_environment = pred->last_environment(); |
| 759 | DCHECK(last_environment != NULL); |
| 760 | // Only copy the environment, if it is later used again. |
| 761 | if (pred->end()->SecondSuccessor() == NULL) { |
| 762 | DCHECK(pred->end()->FirstSuccessor() == block); |
| 763 | } else { |
| 764 | if (pred->end()->FirstSuccessor()->block_id() > block->block_id() || |
| 765 | pred->end()->SecondSuccessor()->block_id() > block->block_id()) { |
| 766 | last_environment = last_environment->Copy(); |
| 767 | } |
| 768 | } |
| 769 | block->UpdateEnvironment(last_environment); |
| 770 | DCHECK(pred->argument_count() >= 0); |
| 771 | argument_count_ = pred->argument_count(); |
| 772 | } else { |
| 773 | // We are at a state join => process phis. |
| 774 | HBasicBlock* pred = block->predecessors()->at(0); |
| 775 | // No need to copy the environment, it cannot be used later. |
| 776 | HEnvironment* last_environment = pred->last_environment(); |
| 777 | for (int i = 0; i < block->phis()->length(); ++i) { |
| 778 | HPhi* phi = block->phis()->at(i); |
| 779 | if (phi->HasMergedIndex()) { |
| 780 | last_environment->SetValueAt(phi->merged_index(), phi); |
| 781 | } |
| 782 | } |
| 783 | for (int i = 0; i < block->deleted_phis()->length(); ++i) { |
| 784 | if (block->deleted_phis()->at(i) < last_environment->length()) { |
| 785 | last_environment->SetValueAt(block->deleted_phis()->at(i), |
| 786 | graph_->GetConstantUndefined()); |
| 787 | } |
| 788 | } |
| 789 | block->UpdateEnvironment(last_environment); |
| 790 | // Pick up the outgoing argument count of one of the predecessors. |
| 791 | argument_count_ = pred->argument_count(); |
| 792 | } |
| 793 | HInstruction* current = block->first(); |
| 794 | int start = chunk_->instructions()->length(); |
| 795 | while (current != NULL && !is_aborted()) { |
| 796 | // Code for constants in registers is generated lazily. |
| 797 | if (!current->EmitAtUses()) { |
| 798 | VisitInstruction(current); |
| 799 | } |
| 800 | current = current->next(); |
| 801 | } |
| 802 | int end = chunk_->instructions()->length() - 1; |
| 803 | if (end >= start) { |
| 804 | block->set_first_instruction_index(start); |
| 805 | block->set_last_instruction_index(end); |
| 806 | } |
| 807 | block->set_argument_count(argument_count_); |
| 808 | next_block_ = NULL; |
| 809 | current_block_ = NULL; |
| 810 | } |
| 811 | |
| 812 | |
| 813 | void LChunkBuilder::VisitInstruction(HInstruction* current) { |
| 814 | HInstruction* old_current = current_instruction_; |
| 815 | current_instruction_ = current; |
| 816 | |
| 817 | LInstruction* instr = NULL; |
| 818 | if (current->CanReplaceWithDummyUses()) { |
| 819 | if (current->OperandCount() == 0) { |
| 820 | instr = DefineAsRegister(new(zone()) LDummy()); |
| 821 | } else { |
| 822 | DCHECK(!current->OperandAt(0)->IsControlInstruction()); |
| 823 | instr = DefineAsRegister(new(zone()) |
| 824 | LDummyUse(UseAny(current->OperandAt(0)))); |
| 825 | } |
| 826 | for (int i = 1; i < current->OperandCount(); ++i) { |
| 827 | if (current->OperandAt(i)->IsControlInstruction()) continue; |
| 828 | LInstruction* dummy = |
| 829 | new(zone()) LDummyUse(UseAny(current->OperandAt(i))); |
| 830 | dummy->set_hydrogen_value(current); |
| 831 | chunk_->AddInstruction(dummy, current_block_); |
| 832 | } |
| 833 | } else { |
| 834 | HBasicBlock* successor; |
| 835 | if (current->IsControlInstruction() && |
| 836 | HControlInstruction::cast(current)->KnownSuccessorBlock(&successor) && |
| 837 | successor != NULL) { |
| 838 | instr = new(zone()) LGoto(successor); |
| 839 | } else { |
| 840 | instr = current->CompileToLithium(this); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | argument_count_ += current->argument_delta(); |
| 845 | DCHECK(argument_count_ >= 0); |
| 846 | |
| 847 | if (instr != NULL) { |
| 848 | AddInstruction(instr, current); |
| 849 | } |
| 850 | |
| 851 | current_instruction_ = old_current; |
| 852 | } |
| 853 | |
| 854 | |
| 855 | void LChunkBuilder::AddInstruction(LInstruction* instr, |
| 856 | HInstruction* hydrogen_val) { |
| 857 | // Associate the hydrogen instruction first, since we may need it for |
| 858 | // the ClobbersRegisters() or ClobbersDoubleRegisters() calls below. |
| 859 | instr->set_hydrogen_value(hydrogen_val); |
| 860 | |
| 861 | #if DEBUG |
| 862 | // Make sure that the lithium instruction has either no fixed register |
| 863 | // constraints in temps or the result OR no uses that are only used at |
| 864 | // start. If this invariant doesn't hold, the register allocator can decide |
| 865 | // to insert a split of a range immediately before the instruction due to an |
| 866 | // already allocated register needing to be used for the instruction's fixed |
| 867 | // register constraint. In this case, The register allocator won't see an |
| 868 | // interference between the split child and the use-at-start (it would if |
| 869 | // the it was just a plain use), so it is free to move the split child into |
| 870 | // the same register that is used for the use-at-start. |
| 871 | // See https://code.google.com/p/chromium/issues/detail?id=201590 |
| 872 | if (!(instr->ClobbersRegisters() && |
| 873 | instr->ClobbersDoubleRegisters(isolate()))) { |
| 874 | int fixed = 0; |
| 875 | int used_at_start = 0; |
| 876 | for (UseIterator it(instr); !it.Done(); it.Advance()) { |
| 877 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 878 | if (operand->IsUsedAtStart()) ++used_at_start; |
| 879 | } |
| 880 | if (instr->Output() != NULL) { |
| 881 | if (LUnallocated::cast(instr->Output())->HasFixedPolicy()) ++fixed; |
| 882 | } |
| 883 | for (TempIterator it(instr); !it.Done(); it.Advance()) { |
| 884 | LUnallocated* operand = LUnallocated::cast(it.Current()); |
| 885 | if (operand->HasFixedPolicy()) ++fixed; |
| 886 | } |
| 887 | DCHECK(fixed == 0 || used_at_start == 0); |
| 888 | } |
| 889 | #endif |
| 890 | |
| 891 | if (FLAG_stress_pointer_maps && !instr->HasPointerMap()) { |
| 892 | instr = AssignPointerMap(instr); |
| 893 | } |
| 894 | if (FLAG_stress_environments && !instr->HasEnvironment()) { |
| 895 | instr = AssignEnvironment(instr); |
| 896 | } |
| 897 | chunk_->AddInstruction(instr, current_block_); |
| 898 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 899 | CreateLazyBailoutForCall(current_block_, instr, hydrogen_val); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | |
| 903 | LInstruction* LChunkBuilder::DoGoto(HGoto* instr) { |
| 904 | return new(zone()) LGoto(instr->FirstSuccessor()); |
| 905 | } |
| 906 | |
| 907 | |
| 908 | LInstruction* LChunkBuilder::DoPrologue(HPrologue* instr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 909 | LInstruction* result = new (zone()) LPrologue(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 910 | if (info_->scope()->num_heap_slots() > 0) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 911 | result = MarkAsCall(result, instr); |
| 912 | } |
| 913 | return result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | |
| 917 | LInstruction* LChunkBuilder::DoDebugBreak(HDebugBreak* instr) { |
| 918 | return new(zone()) LDebugBreak(); |
| 919 | } |
| 920 | |
| 921 | |
| 922 | LInstruction* LChunkBuilder::DoBranch(HBranch* instr) { |
| 923 | HValue* value = instr->value(); |
| 924 | Representation r = value->representation(); |
| 925 | HType type = value->type(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 926 | ToBooleanICStub::Types expected = instr->expected_input_types(); |
| 927 | if (expected.IsEmpty()) expected = ToBooleanICStub::Types::Generic(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 928 | |
| 929 | bool easy_case = !r.IsTagged() || type.IsBoolean() || type.IsSmi() || |
| 930 | type.IsJSArray() || type.IsHeapNumber() || type.IsString(); |
| 931 | LInstruction* branch = new(zone()) LBranch(UseRegister(value)); |
| 932 | if (!easy_case && |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 933 | ((!expected.Contains(ToBooleanICStub::SMI) && expected.NeedsMap()) || |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 934 | !expected.IsGeneric())) { |
| 935 | branch = AssignEnvironment(branch); |
| 936 | } |
| 937 | return branch; |
| 938 | } |
| 939 | |
| 940 | |
| 941 | LInstruction* LChunkBuilder::DoCompareMap(HCompareMap* instr) { |
| 942 | DCHECK(instr->value()->representation().IsTagged()); |
| 943 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 944 | return new(zone()) LCmpMapAndBranch(value); |
| 945 | } |
| 946 | |
| 947 | |
| 948 | LInstruction* LChunkBuilder::DoArgumentsLength(HArgumentsLength* length) { |
| 949 | info()->MarkAsRequiresFrame(); |
| 950 | return DefineAsRegister(new(zone()) LArgumentsLength(Use(length->value()))); |
| 951 | } |
| 952 | |
| 953 | |
| 954 | LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) { |
| 955 | info()->MarkAsRequiresFrame(); |
| 956 | return DefineAsRegister(new(zone()) LArgumentsElements); |
| 957 | } |
| 958 | |
| 959 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 960 | LInstruction* LChunkBuilder::DoHasInPrototypeChainAndBranch( |
| 961 | HHasInPrototypeChainAndBranch* instr) { |
| 962 | LOperand* object = UseRegister(instr->object()); |
| 963 | LOperand* prototype = UseRegister(instr->prototype()); |
| 964 | LHasInPrototypeChainAndBranch* result = |
| 965 | new (zone()) LHasInPrototypeChainAndBranch(object, prototype); |
| 966 | return AssignEnvironment(result); |
| 967 | } |
| 968 | |
| 969 | |
| 970 | LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) { |
| 971 | LOperand* receiver = UseRegister(instr->receiver()); |
| 972 | LOperand* function = UseRegisterAtStart(instr->function()); |
| 973 | LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function); |
| 974 | return AssignEnvironment(DefineSameAsFirst(result)); |
| 975 | } |
| 976 | |
| 977 | |
| 978 | LInstruction* LChunkBuilder::DoApplyArguments(HApplyArguments* instr) { |
| 979 | LOperand* function = UseFixed(instr->function(), rdi); |
| 980 | LOperand* receiver = UseFixed(instr->receiver(), rax); |
| 981 | LOperand* length = UseFixed(instr->length(), rbx); |
| 982 | LOperand* elements = UseFixed(instr->elements(), rcx); |
| 983 | LApplyArguments* result = new(zone()) LApplyArguments(function, |
| 984 | receiver, |
| 985 | length, |
| 986 | elements); |
| 987 | return MarkAsCall(DefineFixed(result, rax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 988 | } |
| 989 | |
| 990 | |
| 991 | LInstruction* LChunkBuilder::DoPushArguments(HPushArguments* instr) { |
| 992 | int argc = instr->OperandCount(); |
| 993 | for (int i = 0; i < argc; ++i) { |
| 994 | LOperand* argument = UseOrConstant(instr->argument(i)); |
| 995 | AddInstruction(new(zone()) LPushArgument(argument), instr); |
| 996 | } |
| 997 | return NULL; |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | LInstruction* LChunkBuilder::DoStoreCodeEntry( |
| 1002 | HStoreCodeEntry* store_code_entry) { |
| 1003 | LOperand* function = UseRegister(store_code_entry->function()); |
| 1004 | LOperand* code_object = UseTempRegister(store_code_entry->code_object()); |
| 1005 | return new(zone()) LStoreCodeEntry(function, code_object); |
| 1006 | } |
| 1007 | |
| 1008 | |
| 1009 | LInstruction* LChunkBuilder::DoInnerAllocatedObject( |
| 1010 | HInnerAllocatedObject* instr) { |
| 1011 | LOperand* base_object = UseRegisterAtStart(instr->base_object()); |
| 1012 | LOperand* offset = UseRegisterOrConstantAtStart(instr->offset()); |
| 1013 | return DefineAsRegister( |
| 1014 | new(zone()) LInnerAllocatedObject(base_object, offset)); |
| 1015 | } |
| 1016 | |
| 1017 | |
| 1018 | LInstruction* LChunkBuilder::DoThisFunction(HThisFunction* instr) { |
| 1019 | return instr->HasNoUses() |
| 1020 | ? NULL |
| 1021 | : DefineAsRegister(new(zone()) LThisFunction); |
| 1022 | } |
| 1023 | |
| 1024 | |
| 1025 | LInstruction* LChunkBuilder::DoContext(HContext* instr) { |
| 1026 | if (instr->HasNoUses()) return NULL; |
| 1027 | |
| 1028 | if (info()->IsStub()) { |
| 1029 | return DefineFixed(new(zone()) LContext, rsi); |
| 1030 | } |
| 1031 | |
| 1032 | return DefineAsRegister(new(zone()) LContext); |
| 1033 | } |
| 1034 | |
| 1035 | |
| 1036 | LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) { |
| 1037 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1038 | return MarkAsCall(new(zone()) LDeclareGlobals(context), instr); |
| 1039 | } |
| 1040 | |
| 1041 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1042 | LInstruction* LChunkBuilder::DoCallWithDescriptor( |
| 1043 | HCallWithDescriptor* instr) { |
| 1044 | CallInterfaceDescriptor descriptor = instr->descriptor(); |
| 1045 | |
| 1046 | LOperand* target = UseRegisterOrConstantAtStart(instr->target()); |
| 1047 | ZoneList<LOperand*> ops(instr->OperandCount(), zone()); |
| 1048 | // Target |
| 1049 | ops.Add(target, zone()); |
| 1050 | // Context |
| 1051 | LOperand* op = UseFixed(instr->OperandAt(1), rsi); |
| 1052 | ops.Add(op, zone()); |
| 1053 | // Other register parameters |
| 1054 | for (int i = LCallWithDescriptor::kImplicitRegisterParameterCount; |
| 1055 | i < instr->OperandCount(); i++) { |
| 1056 | op = |
| 1057 | UseFixed(instr->OperandAt(i), |
| 1058 | descriptor.GetRegisterParameter( |
| 1059 | i - LCallWithDescriptor::kImplicitRegisterParameterCount)); |
| 1060 | ops.Add(op, zone()); |
| 1061 | } |
| 1062 | |
| 1063 | LCallWithDescriptor* result = new(zone()) LCallWithDescriptor( |
| 1064 | descriptor, ops, zone()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1065 | if (instr->syntactic_tail_call_mode() == TailCallMode::kAllow) { |
| 1066 | result->MarkAsSyntacticTailCall(); |
| 1067 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1068 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 1069 | } |
| 1070 | |
| 1071 | |
| 1072 | LInstruction* LChunkBuilder::DoInvokeFunction(HInvokeFunction* instr) { |
| 1073 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1074 | LOperand* function = UseFixed(instr->function(), rdi); |
| 1075 | LInvokeFunction* result = new(zone()) LInvokeFunction(context, function); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1076 | if (instr->syntactic_tail_call_mode() == TailCallMode::kAllow) { |
| 1077 | result->MarkAsSyntacticTailCall(); |
| 1078 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1079 | return MarkAsCall(DefineFixed(result, rax), instr, CANNOT_DEOPTIMIZE_EAGERLY); |
| 1080 | } |
| 1081 | |
| 1082 | |
| 1083 | LInstruction* LChunkBuilder::DoUnaryMathOperation(HUnaryMathOperation* instr) { |
| 1084 | switch (instr->op()) { |
| 1085 | case kMathFloor: |
| 1086 | return DoMathFloor(instr); |
| 1087 | case kMathRound: |
| 1088 | return DoMathRound(instr); |
| 1089 | case kMathFround: |
| 1090 | return DoMathFround(instr); |
| 1091 | case kMathAbs: |
| 1092 | return DoMathAbs(instr); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1093 | case kMathCos: |
| 1094 | return DoMathCos(instr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1095 | case kMathLog: |
| 1096 | return DoMathLog(instr); |
| 1097 | case kMathExp: |
| 1098 | return DoMathExp(instr); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1099 | case kMathSin: |
| 1100 | return DoMathSin(instr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1101 | case kMathSqrt: |
| 1102 | return DoMathSqrt(instr); |
| 1103 | case kMathPowHalf: |
| 1104 | return DoMathPowHalf(instr); |
| 1105 | case kMathClz32: |
| 1106 | return DoMathClz32(instr); |
| 1107 | default: |
| 1108 | UNREACHABLE(); |
| 1109 | return NULL; |
| 1110 | } |
| 1111 | } |
| 1112 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1113 | LInstruction* LChunkBuilder::DoMathFloor(HUnaryMathOperation* instr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1114 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1115 | LOperand* input = UseRegisterAtStart(instr->value()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1116 | if (instr->representation().IsInteger32()) { |
| 1117 | LMathFloorI* result = new (zone()) LMathFloorI(input); |
| 1118 | return AssignEnvironment(AssignPointerMap(DefineAsRegister(result))); |
| 1119 | } else { |
| 1120 | DCHECK(instr->representation().IsDouble()); |
| 1121 | LMathFloorD* result = new (zone()) LMathFloorD(input); |
| 1122 | return DefineAsRegister(result); |
| 1123 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1124 | } |
| 1125 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1126 | LInstruction* LChunkBuilder::DoMathRound(HUnaryMathOperation* instr) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1127 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1128 | LOperand* input = UseRegister(instr->value()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1129 | if (instr->representation().IsInteger32()) { |
| 1130 | LOperand* temp = FixedTemp(xmm4); |
| 1131 | LMathRoundI* result = new (zone()) LMathRoundI(input, temp); |
| 1132 | return AssignEnvironment(AssignPointerMap(DefineAsRegister(result))); |
| 1133 | } else { |
| 1134 | DCHECK(instr->representation().IsDouble()); |
| 1135 | LMathRoundD* result = new (zone()) LMathRoundD(input); |
| 1136 | return DefineAsRegister(result); |
| 1137 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1138 | } |
| 1139 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1140 | LInstruction* LChunkBuilder::DoMathFround(HUnaryMathOperation* instr) { |
| 1141 | LOperand* input = UseRegister(instr->value()); |
| 1142 | LMathFround* result = new (zone()) LMathFround(input); |
| 1143 | return DefineAsRegister(result); |
| 1144 | } |
| 1145 | |
| 1146 | |
| 1147 | LInstruction* LChunkBuilder::DoMathAbs(HUnaryMathOperation* instr) { |
| 1148 | LOperand* context = UseAny(instr->context()); |
| 1149 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1150 | LInstruction* result = |
| 1151 | DefineSameAsFirst(new(zone()) LMathAbs(context, input)); |
| 1152 | Representation r = instr->value()->representation(); |
| 1153 | if (!r.IsDouble() && !r.IsSmiOrInteger32()) result = AssignPointerMap(result); |
| 1154 | if (!r.IsDouble()) result = AssignEnvironment(result); |
| 1155 | return result; |
| 1156 | } |
| 1157 | |
| 1158 | |
| 1159 | LInstruction* LChunkBuilder::DoMathLog(HUnaryMathOperation* instr) { |
| 1160 | DCHECK(instr->representation().IsDouble()); |
| 1161 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1162 | LOperand* input = UseFixedDouble(instr->value(), xmm0); |
| 1163 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathLog(input), xmm0), |
| 1164 | instr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1165 | } |
| 1166 | |
| 1167 | |
| 1168 | LInstruction* LChunkBuilder::DoMathClz32(HUnaryMathOperation* instr) { |
| 1169 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1170 | LMathClz32* result = new(zone()) LMathClz32(input); |
| 1171 | return DefineAsRegister(result); |
| 1172 | } |
| 1173 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1174 | LInstruction* LChunkBuilder::DoMathCos(HUnaryMathOperation* instr) { |
| 1175 | DCHECK(instr->representation().IsDouble()); |
| 1176 | DCHECK(instr->value()->representation().IsDouble()); |
| 1177 | LOperand* input = UseFixedDouble(instr->value(), xmm0); |
| 1178 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathCos(input), xmm0), |
| 1179 | instr); |
| 1180 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1181 | |
| 1182 | LInstruction* LChunkBuilder::DoMathExp(HUnaryMathOperation* instr) { |
| 1183 | DCHECK(instr->representation().IsDouble()); |
| 1184 | DCHECK(instr->value()->representation().IsDouble()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1185 | LOperand* input = UseFixedDouble(instr->value(), xmm0); |
| 1186 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathExp(input), xmm0), |
| 1187 | instr); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1188 | } |
| 1189 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1190 | LInstruction* LChunkBuilder::DoMathSin(HUnaryMathOperation* instr) { |
| 1191 | DCHECK(instr->representation().IsDouble()); |
| 1192 | DCHECK(instr->value()->representation().IsDouble()); |
| 1193 | LOperand* input = UseFixedDouble(instr->value(), xmm0); |
| 1194 | return MarkAsCall(DefineFixedDouble(new (zone()) LMathSin(input), xmm0), |
| 1195 | instr); |
| 1196 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1197 | |
| 1198 | LInstruction* LChunkBuilder::DoMathSqrt(HUnaryMathOperation* instr) { |
| 1199 | LOperand* input = UseAtStart(instr->value()); |
| 1200 | return DefineAsRegister(new(zone()) LMathSqrt(input)); |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | LInstruction* LChunkBuilder::DoMathPowHalf(HUnaryMathOperation* instr) { |
| 1205 | LOperand* input = UseRegisterAtStart(instr->value()); |
| 1206 | LMathPowHalf* result = new(zone()) LMathPowHalf(input); |
| 1207 | return DefineSameAsFirst(result); |
| 1208 | } |
| 1209 | |
| 1210 | |
| 1211 | LInstruction* LChunkBuilder::DoCallNewArray(HCallNewArray* instr) { |
| 1212 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1213 | LOperand* constructor = UseFixed(instr->constructor(), rdi); |
| 1214 | LCallNewArray* result = new(zone()) LCallNewArray(context, constructor); |
| 1215 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 1216 | } |
| 1217 | |
| 1218 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1219 | LInstruction* LChunkBuilder::DoCallRuntime(HCallRuntime* instr) { |
| 1220 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1221 | LCallRuntime* result = new(zone()) LCallRuntime(context); |
| 1222 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | LInstruction* LChunkBuilder::DoRor(HRor* instr) { |
| 1227 | return DoShift(Token::ROR, instr); |
| 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | LInstruction* LChunkBuilder::DoShr(HShr* instr) { |
| 1232 | return DoShift(Token::SHR, instr); |
| 1233 | } |
| 1234 | |
| 1235 | |
| 1236 | LInstruction* LChunkBuilder::DoSar(HSar* instr) { |
| 1237 | return DoShift(Token::SAR, instr); |
| 1238 | } |
| 1239 | |
| 1240 | |
| 1241 | LInstruction* LChunkBuilder::DoShl(HShl* instr) { |
| 1242 | return DoShift(Token::SHL, instr); |
| 1243 | } |
| 1244 | |
| 1245 | |
| 1246 | LInstruction* LChunkBuilder::DoBitwise(HBitwise* instr) { |
| 1247 | if (instr->representation().IsSmiOrInteger32()) { |
| 1248 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1249 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1250 | DCHECK(instr->CheckFlag(HValue::kTruncatingToInt32)); |
| 1251 | |
| 1252 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1253 | LOperand* right; |
| 1254 | if (SmiValuesAre32Bits() && instr->representation().IsSmi()) { |
| 1255 | // We don't support tagged immediates, so we request it in a register. |
| 1256 | right = UseRegisterAtStart(instr->BetterRightOperand()); |
| 1257 | } else { |
| 1258 | right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1259 | } |
| 1260 | return DefineSameAsFirst(new(zone()) LBitI(left, right)); |
| 1261 | } else { |
| 1262 | return DoArithmeticT(instr->op(), instr); |
| 1263 | } |
| 1264 | } |
| 1265 | |
| 1266 | |
| 1267 | LInstruction* LChunkBuilder::DoDivByPowerOf2I(HDiv* instr) { |
| 1268 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1269 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1270 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1271 | LOperand* dividend = UseRegister(instr->left()); |
| 1272 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1273 | LInstruction* result = DefineAsRegister(new(zone()) LDivByPowerOf2I( |
| 1274 | dividend, divisor)); |
| 1275 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1276 | (instr->CheckFlag(HValue::kCanOverflow) && divisor == -1) || |
| 1277 | (!instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32) && |
| 1278 | divisor != 1 && divisor != -1)) { |
| 1279 | result = AssignEnvironment(result); |
| 1280 | } |
| 1281 | return result; |
| 1282 | } |
| 1283 | |
| 1284 | |
| 1285 | LInstruction* LChunkBuilder::DoDivByConstI(HDiv* instr) { |
| 1286 | DCHECK(instr->representation().IsInteger32()); |
| 1287 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1288 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1289 | LOperand* dividend = UseRegister(instr->left()); |
| 1290 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1291 | LOperand* temp1 = FixedTemp(rax); |
| 1292 | LOperand* temp2 = FixedTemp(rdx); |
| 1293 | LInstruction* result = DefineFixed(new(zone()) LDivByConstI( |
| 1294 | dividend, divisor, temp1, temp2), rdx); |
| 1295 | if (divisor == 0 || |
| 1296 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1297 | !instr->CheckFlag(HInstruction::kAllUsesTruncatingToInt32)) { |
| 1298 | result = AssignEnvironment(result); |
| 1299 | } |
| 1300 | return result; |
| 1301 | } |
| 1302 | |
| 1303 | |
| 1304 | LInstruction* LChunkBuilder::DoDivI(HDiv* instr) { |
| 1305 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1306 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1307 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1308 | LOperand* dividend = UseFixed(instr->left(), rax); |
| 1309 | LOperand* divisor = UseRegister(instr->right()); |
| 1310 | LOperand* temp = FixedTemp(rdx); |
| 1311 | LInstruction* result = DefineFixed(new(zone()) LDivI( |
| 1312 | dividend, divisor, temp), rax); |
| 1313 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1314 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1315 | instr->CheckFlag(HValue::kCanOverflow) || |
| 1316 | !instr->CheckFlag(HValue::kAllUsesTruncatingToInt32)) { |
| 1317 | result = AssignEnvironment(result); |
| 1318 | } |
| 1319 | return result; |
| 1320 | } |
| 1321 | |
| 1322 | |
| 1323 | LInstruction* LChunkBuilder::DoDiv(HDiv* instr) { |
| 1324 | if (instr->representation().IsSmiOrInteger32()) { |
| 1325 | if (instr->RightIsPowerOf2()) { |
| 1326 | return DoDivByPowerOf2I(instr); |
| 1327 | } else if (instr->right()->IsConstant()) { |
| 1328 | return DoDivByConstI(instr); |
| 1329 | } else { |
| 1330 | return DoDivI(instr); |
| 1331 | } |
| 1332 | } else if (instr->representation().IsDouble()) { |
| 1333 | return DoArithmeticD(Token::DIV, instr); |
| 1334 | } else { |
| 1335 | return DoArithmeticT(Token::DIV, instr); |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | |
| 1340 | LInstruction* LChunkBuilder::DoFlooringDivByPowerOf2I(HMathFloorOfDiv* instr) { |
| 1341 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1342 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1343 | LInstruction* result = DefineSameAsFirst(new(zone()) LFlooringDivByPowerOf2I( |
| 1344 | dividend, divisor)); |
| 1345 | if ((instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0) || |
| 1346 | (instr->CheckFlag(HValue::kLeftCanBeMinInt) && divisor == -1)) { |
| 1347 | result = AssignEnvironment(result); |
| 1348 | } |
| 1349 | return result; |
| 1350 | } |
| 1351 | |
| 1352 | |
| 1353 | LInstruction* LChunkBuilder::DoFlooringDivByConstI(HMathFloorOfDiv* instr) { |
| 1354 | DCHECK(instr->representation().IsInteger32()); |
| 1355 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1356 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1357 | LOperand* dividend = UseRegister(instr->left()); |
| 1358 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1359 | LOperand* temp1 = FixedTemp(rax); |
| 1360 | LOperand* temp2 = FixedTemp(rdx); |
| 1361 | LOperand* temp3 = |
| 1362 | ((divisor > 0 && !instr->CheckFlag(HValue::kLeftCanBeNegative)) || |
| 1363 | (divisor < 0 && !instr->CheckFlag(HValue::kLeftCanBePositive))) ? |
| 1364 | NULL : TempRegister(); |
| 1365 | LInstruction* result = |
| 1366 | DefineFixed(new(zone()) LFlooringDivByConstI(dividend, |
| 1367 | divisor, |
| 1368 | temp1, |
| 1369 | temp2, |
| 1370 | temp3), |
| 1371 | rdx); |
| 1372 | if (divisor == 0 || |
| 1373 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && divisor < 0)) { |
| 1374 | result = AssignEnvironment(result); |
| 1375 | } |
| 1376 | return result; |
| 1377 | } |
| 1378 | |
| 1379 | |
| 1380 | LInstruction* LChunkBuilder::DoFlooringDivI(HMathFloorOfDiv* instr) { |
| 1381 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1382 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1383 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1384 | LOperand* dividend = UseFixed(instr->left(), rax); |
| 1385 | LOperand* divisor = UseRegister(instr->right()); |
| 1386 | LOperand* temp = FixedTemp(rdx); |
| 1387 | LInstruction* result = DefineFixed(new(zone()) LFlooringDivI( |
| 1388 | dividend, divisor, temp), rax); |
| 1389 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1390 | instr->CheckFlag(HValue::kBailoutOnMinusZero) || |
| 1391 | instr->CheckFlag(HValue::kCanOverflow)) { |
| 1392 | result = AssignEnvironment(result); |
| 1393 | } |
| 1394 | return result; |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | LInstruction* LChunkBuilder::DoMathFloorOfDiv(HMathFloorOfDiv* instr) { |
| 1399 | if (instr->RightIsPowerOf2()) { |
| 1400 | return DoFlooringDivByPowerOf2I(instr); |
| 1401 | } else if (instr->right()->IsConstant()) { |
| 1402 | return DoFlooringDivByConstI(instr); |
| 1403 | } else { |
| 1404 | return DoFlooringDivI(instr); |
| 1405 | } |
| 1406 | } |
| 1407 | |
| 1408 | |
| 1409 | LInstruction* LChunkBuilder::DoModByPowerOf2I(HMod* instr) { |
| 1410 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1411 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1412 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1413 | LOperand* dividend = UseRegisterAtStart(instr->left()); |
| 1414 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1415 | LInstruction* result = DefineSameAsFirst(new(zone()) LModByPowerOf2I( |
| 1416 | dividend, divisor)); |
| 1417 | if (instr->CheckFlag(HValue::kLeftCanBeNegative) && |
| 1418 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1419 | result = AssignEnvironment(result); |
| 1420 | } |
| 1421 | return result; |
| 1422 | } |
| 1423 | |
| 1424 | |
| 1425 | LInstruction* LChunkBuilder::DoModByConstI(HMod* instr) { |
| 1426 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1427 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1428 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1429 | LOperand* dividend = UseRegister(instr->left()); |
| 1430 | int32_t divisor = instr->right()->GetInteger32Constant(); |
| 1431 | LOperand* temp1 = FixedTemp(rax); |
| 1432 | LOperand* temp2 = FixedTemp(rdx); |
| 1433 | LInstruction* result = DefineFixed(new(zone()) LModByConstI( |
| 1434 | dividend, divisor, temp1, temp2), rax); |
| 1435 | if (divisor == 0 || instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1436 | result = AssignEnvironment(result); |
| 1437 | } |
| 1438 | return result; |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | LInstruction* LChunkBuilder::DoModI(HMod* instr) { |
| 1443 | DCHECK(instr->representation().IsSmiOrInteger32()); |
| 1444 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1445 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1446 | LOperand* dividend = UseFixed(instr->left(), rax); |
| 1447 | LOperand* divisor = UseRegister(instr->right()); |
| 1448 | LOperand* temp = FixedTemp(rdx); |
| 1449 | LInstruction* result = DefineFixed(new(zone()) LModI( |
| 1450 | dividend, divisor, temp), rdx); |
| 1451 | if (instr->CheckFlag(HValue::kCanBeDivByZero) || |
| 1452 | instr->CheckFlag(HValue::kBailoutOnMinusZero)) { |
| 1453 | result = AssignEnvironment(result); |
| 1454 | } |
| 1455 | return result; |
| 1456 | } |
| 1457 | |
| 1458 | |
| 1459 | LInstruction* LChunkBuilder::DoMod(HMod* instr) { |
| 1460 | if (instr->representation().IsSmiOrInteger32()) { |
| 1461 | if (instr->RightIsPowerOf2()) { |
| 1462 | return DoModByPowerOf2I(instr); |
| 1463 | } else if (instr->right()->IsConstant()) { |
| 1464 | return DoModByConstI(instr); |
| 1465 | } else { |
| 1466 | return DoModI(instr); |
| 1467 | } |
| 1468 | } else if (instr->representation().IsDouble()) { |
| 1469 | return DoArithmeticD(Token::MOD, instr); |
| 1470 | } else { |
| 1471 | return DoArithmeticT(Token::MOD, instr); |
| 1472 | } |
| 1473 | } |
| 1474 | |
| 1475 | |
| 1476 | LInstruction* LChunkBuilder::DoMul(HMul* instr) { |
| 1477 | if (instr->representation().IsSmiOrInteger32()) { |
| 1478 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1479 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1480 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1481 | HValue* h_right = instr->BetterRightOperand(); |
| 1482 | LOperand* right = UseOrConstant(h_right); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1483 | LMulI* mul = new(zone()) LMulI(left, right); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1484 | int constant_value = |
| 1485 | h_right->IsConstant() ? HConstant::cast(h_right)->Integer32Value() : 0; |
| 1486 | // |needs_environment| must mirror the cases where LCodeGen::DoMulI calls |
| 1487 | // |DeoptimizeIf|. |
| 1488 | bool needs_environment = |
| 1489 | instr->CheckFlag(HValue::kCanOverflow) || |
| 1490 | (instr->CheckFlag(HValue::kBailoutOnMinusZero) && |
| 1491 | (!right->IsConstantOperand() || constant_value <= 0)); |
| 1492 | if (needs_environment) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1493 | AssignEnvironment(mul); |
| 1494 | } |
| 1495 | return DefineSameAsFirst(mul); |
| 1496 | } else if (instr->representation().IsDouble()) { |
| 1497 | return DoArithmeticD(Token::MUL, instr); |
| 1498 | } else { |
| 1499 | return DoArithmeticT(Token::MUL, instr); |
| 1500 | } |
| 1501 | } |
| 1502 | |
| 1503 | |
| 1504 | LInstruction* LChunkBuilder::DoSub(HSub* instr) { |
| 1505 | if (instr->representation().IsSmiOrInteger32()) { |
| 1506 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1507 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1508 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1509 | LOperand* right; |
| 1510 | if (SmiValuesAre32Bits() && instr->representation().IsSmi()) { |
| 1511 | // We don't support tagged immediates, so we request it in a register. |
| 1512 | right = UseRegisterAtStart(instr->right()); |
| 1513 | } else { |
| 1514 | right = UseOrConstantAtStart(instr->right()); |
| 1515 | } |
| 1516 | LSubI* sub = new(zone()) LSubI(left, right); |
| 1517 | LInstruction* result = DefineSameAsFirst(sub); |
| 1518 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1519 | result = AssignEnvironment(result); |
| 1520 | } |
| 1521 | return result; |
| 1522 | } else if (instr->representation().IsDouble()) { |
| 1523 | return DoArithmeticD(Token::SUB, instr); |
| 1524 | } else { |
| 1525 | return DoArithmeticT(Token::SUB, instr); |
| 1526 | } |
| 1527 | } |
| 1528 | |
| 1529 | |
| 1530 | LInstruction* LChunkBuilder::DoAdd(HAdd* instr) { |
| 1531 | if (instr->representation().IsSmiOrInteger32()) { |
| 1532 | // Check to see if it would be advantageous to use an lea instruction rather |
| 1533 | // than an add. This is the case when no overflow check is needed and there |
| 1534 | // are multiple uses of the add's inputs, so using a 3-register add will |
| 1535 | // preserve all input values for later uses. |
| 1536 | bool use_lea = LAddI::UseLea(instr); |
| 1537 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1538 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1539 | LOperand* left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1540 | HValue* right_candidate = instr->BetterRightOperand(); |
| 1541 | LOperand* right; |
| 1542 | if (SmiValuesAre32Bits() && instr->representation().IsSmi()) { |
| 1543 | // We cannot add a tagged immediate to a tagged value, |
| 1544 | // so we request it in a register. |
| 1545 | right = UseRegisterAtStart(right_candidate); |
| 1546 | } else { |
| 1547 | right = use_lea ? UseRegisterOrConstantAtStart(right_candidate) |
| 1548 | : UseOrConstantAtStart(right_candidate); |
| 1549 | } |
| 1550 | LAddI* add = new(zone()) LAddI(left, right); |
| 1551 | bool can_overflow = instr->CheckFlag(HValue::kCanOverflow); |
| 1552 | LInstruction* result = use_lea ? DefineAsRegister(add) |
| 1553 | : DefineSameAsFirst(add); |
| 1554 | if (can_overflow) { |
| 1555 | result = AssignEnvironment(result); |
| 1556 | } |
| 1557 | return result; |
| 1558 | } else if (instr->representation().IsExternal()) { |
| 1559 | DCHECK(instr->IsConsistentExternalRepresentation()); |
| 1560 | DCHECK(!instr->CheckFlag(HValue::kCanOverflow)); |
| 1561 | bool use_lea = LAddI::UseLea(instr); |
| 1562 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1563 | HValue* right_candidate = instr->right(); |
| 1564 | LOperand* right = use_lea |
| 1565 | ? UseRegisterOrConstantAtStart(right_candidate) |
| 1566 | : UseOrConstantAtStart(right_candidate); |
| 1567 | LAddI* add = new(zone()) LAddI(left, right); |
| 1568 | LInstruction* result = use_lea |
| 1569 | ? DefineAsRegister(add) |
| 1570 | : DefineSameAsFirst(add); |
| 1571 | return result; |
| 1572 | } else if (instr->representation().IsDouble()) { |
| 1573 | return DoArithmeticD(Token::ADD, instr); |
| 1574 | } else { |
| 1575 | return DoArithmeticT(Token::ADD, instr); |
| 1576 | } |
| 1577 | return NULL; |
| 1578 | } |
| 1579 | |
| 1580 | |
| 1581 | LInstruction* LChunkBuilder::DoMathMinMax(HMathMinMax* instr) { |
| 1582 | LOperand* left = NULL; |
| 1583 | LOperand* right = NULL; |
| 1584 | DCHECK(instr->left()->representation().Equals(instr->representation())); |
| 1585 | DCHECK(instr->right()->representation().Equals(instr->representation())); |
| 1586 | if (instr->representation().IsSmi()) { |
| 1587 | left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1588 | right = UseAtStart(instr->BetterRightOperand()); |
| 1589 | } else if (instr->representation().IsInteger32()) { |
| 1590 | left = UseRegisterAtStart(instr->BetterLeftOperand()); |
| 1591 | right = UseOrConstantAtStart(instr->BetterRightOperand()); |
| 1592 | } else { |
| 1593 | DCHECK(instr->representation().IsDouble()); |
| 1594 | left = UseRegisterAtStart(instr->left()); |
| 1595 | right = UseRegisterAtStart(instr->right()); |
| 1596 | } |
| 1597 | LMathMinMax* minmax = new(zone()) LMathMinMax(left, right); |
| 1598 | return DefineSameAsFirst(minmax); |
| 1599 | } |
| 1600 | |
| 1601 | |
| 1602 | LInstruction* LChunkBuilder::DoPower(HPower* instr) { |
| 1603 | DCHECK(instr->representation().IsDouble()); |
| 1604 | // We call a C function for double power. It can't trigger a GC. |
| 1605 | // We need to use fixed result register for the call. |
| 1606 | Representation exponent_type = instr->right()->representation(); |
| 1607 | DCHECK(instr->left()->representation().IsDouble()); |
| 1608 | LOperand* left = UseFixedDouble(instr->left(), xmm2); |
| 1609 | LOperand* right = |
| 1610 | exponent_type.IsDouble() |
| 1611 | ? UseFixedDouble(instr->right(), xmm1) |
| 1612 | : UseFixed(instr->right(), MathPowTaggedDescriptor::exponent()); |
| 1613 | LPower* result = new(zone()) LPower(left, right); |
| 1614 | return MarkAsCall(DefineFixedDouble(result, xmm3), instr, |
| 1615 | CAN_DEOPTIMIZE_EAGERLY); |
| 1616 | } |
| 1617 | |
| 1618 | |
| 1619 | LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) { |
| 1620 | DCHECK(instr->left()->representation().IsTagged()); |
| 1621 | DCHECK(instr->right()->representation().IsTagged()); |
| 1622 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1623 | LOperand* left = UseFixed(instr->left(), rdx); |
| 1624 | LOperand* right = UseFixed(instr->right(), rax); |
| 1625 | LCmpT* result = new(zone()) LCmpT(context, left, right); |
| 1626 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 1627 | } |
| 1628 | |
| 1629 | |
| 1630 | LInstruction* LChunkBuilder::DoCompareNumericAndBranch( |
| 1631 | HCompareNumericAndBranch* instr) { |
| 1632 | Representation r = instr->representation(); |
| 1633 | if (r.IsSmiOrInteger32()) { |
| 1634 | DCHECK(instr->left()->representation().Equals(r)); |
| 1635 | DCHECK(instr->right()->representation().Equals(r)); |
| 1636 | LOperand* left = UseRegisterOrConstantAtStart(instr->left()); |
| 1637 | LOperand* right = UseOrConstantAtStart(instr->right()); |
| 1638 | return new(zone()) LCompareNumericAndBranch(left, right); |
| 1639 | } else { |
| 1640 | DCHECK(r.IsDouble()); |
| 1641 | DCHECK(instr->left()->representation().IsDouble()); |
| 1642 | DCHECK(instr->right()->representation().IsDouble()); |
| 1643 | LOperand* left; |
| 1644 | LOperand* right; |
| 1645 | if (instr->left()->IsConstant() && instr->right()->IsConstant()) { |
| 1646 | left = UseRegisterOrConstantAtStart(instr->left()); |
| 1647 | right = UseRegisterOrConstantAtStart(instr->right()); |
| 1648 | } else { |
| 1649 | left = UseRegisterAtStart(instr->left()); |
| 1650 | right = UseRegisterAtStart(instr->right()); |
| 1651 | } |
| 1652 | return new(zone()) LCompareNumericAndBranch(left, right); |
| 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | |
| 1657 | LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch( |
| 1658 | HCompareObjectEqAndBranch* instr) { |
| 1659 | LOperand* left = UseRegisterAtStart(instr->left()); |
| 1660 | LOperand* right = UseRegisterOrConstantAtStart(instr->right()); |
| 1661 | return new(zone()) LCmpObjectEqAndBranch(left, right); |
| 1662 | } |
| 1663 | |
| 1664 | |
| 1665 | LInstruction* LChunkBuilder::DoCompareHoleAndBranch( |
| 1666 | HCompareHoleAndBranch* instr) { |
| 1667 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1668 | return new(zone()) LCmpHoleAndBranch(value); |
| 1669 | } |
| 1670 | |
| 1671 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1672 | LInstruction* LChunkBuilder::DoIsStringAndBranch(HIsStringAndBranch* instr) { |
| 1673 | DCHECK(instr->value()->representation().IsTagged()); |
| 1674 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1675 | LOperand* temp = TempRegister(); |
| 1676 | return new(zone()) LIsStringAndBranch(value, temp); |
| 1677 | } |
| 1678 | |
| 1679 | |
| 1680 | LInstruction* LChunkBuilder::DoIsSmiAndBranch(HIsSmiAndBranch* instr) { |
| 1681 | DCHECK(instr->value()->representation().IsTagged()); |
| 1682 | return new(zone()) LIsSmiAndBranch(Use(instr->value())); |
| 1683 | } |
| 1684 | |
| 1685 | |
| 1686 | LInstruction* LChunkBuilder::DoIsUndetectableAndBranch( |
| 1687 | HIsUndetectableAndBranch* instr) { |
| 1688 | DCHECK(instr->value()->representation().IsTagged()); |
| 1689 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1690 | LOperand* temp = TempRegister(); |
| 1691 | return new(zone()) LIsUndetectableAndBranch(value, temp); |
| 1692 | } |
| 1693 | |
| 1694 | |
| 1695 | LInstruction* LChunkBuilder::DoStringCompareAndBranch( |
| 1696 | HStringCompareAndBranch* instr) { |
| 1697 | |
| 1698 | DCHECK(instr->left()->representation().IsTagged()); |
| 1699 | DCHECK(instr->right()->representation().IsTagged()); |
| 1700 | LOperand* context = UseFixed(instr->context(), rsi); |
| 1701 | LOperand* left = UseFixed(instr->left(), rdx); |
| 1702 | LOperand* right = UseFixed(instr->right(), rax); |
| 1703 | LStringCompareAndBranch* result = |
| 1704 | new(zone()) LStringCompareAndBranch(context, left, right); |
| 1705 | |
| 1706 | return MarkAsCall(result, instr); |
| 1707 | } |
| 1708 | |
| 1709 | |
| 1710 | LInstruction* LChunkBuilder::DoHasInstanceTypeAndBranch( |
| 1711 | HHasInstanceTypeAndBranch* instr) { |
| 1712 | DCHECK(instr->value()->representation().IsTagged()); |
| 1713 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1714 | return new(zone()) LHasInstanceTypeAndBranch(value); |
| 1715 | } |
| 1716 | |
| 1717 | |
| 1718 | LInstruction* LChunkBuilder::DoGetCachedArrayIndex( |
| 1719 | HGetCachedArrayIndex* instr) { |
| 1720 | DCHECK(instr->value()->representation().IsTagged()); |
| 1721 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1722 | |
| 1723 | return DefineAsRegister(new(zone()) LGetCachedArrayIndex(value)); |
| 1724 | } |
| 1725 | |
| 1726 | |
| 1727 | LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch( |
| 1728 | HHasCachedArrayIndexAndBranch* instr) { |
| 1729 | DCHECK(instr->value()->representation().IsTagged()); |
| 1730 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1731 | return new(zone()) LHasCachedArrayIndexAndBranch(value); |
| 1732 | } |
| 1733 | |
| 1734 | |
| 1735 | LInstruction* LChunkBuilder::DoClassOfTestAndBranch( |
| 1736 | HClassOfTestAndBranch* instr) { |
| 1737 | LOperand* value = UseRegister(instr->value()); |
| 1738 | return new(zone()) LClassOfTestAndBranch(value, |
| 1739 | TempRegister(), |
| 1740 | TempRegister()); |
| 1741 | } |
| 1742 | |
| 1743 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1744 | LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) { |
| 1745 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1746 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1747 | return DefineAsRegister(new(zone()) LSeqStringGetChar(string, index)); |
| 1748 | } |
| 1749 | |
| 1750 | |
| 1751 | LInstruction* LChunkBuilder::DoSeqStringSetChar(HSeqStringSetChar* instr) { |
| 1752 | LOperand* string = UseRegisterAtStart(instr->string()); |
| 1753 | LOperand* index = FLAG_debug_code |
| 1754 | ? UseRegisterAtStart(instr->index()) |
| 1755 | : UseRegisterOrConstantAtStart(instr->index()); |
| 1756 | LOperand* value = FLAG_debug_code |
| 1757 | ? UseRegisterAtStart(instr->value()) |
| 1758 | : UseRegisterOrConstantAtStart(instr->value()); |
| 1759 | LOperand* context = FLAG_debug_code ? UseFixed(instr->context(), rsi) : NULL; |
| 1760 | LInstruction* result = new(zone()) LSeqStringSetChar(context, string, |
| 1761 | index, value); |
| 1762 | if (FLAG_debug_code) { |
| 1763 | result = MarkAsCall(result, instr); |
| 1764 | } |
| 1765 | return result; |
| 1766 | } |
| 1767 | |
| 1768 | |
| 1769 | LInstruction* LChunkBuilder::DoBoundsCheck(HBoundsCheck* instr) { |
| 1770 | if (!FLAG_debug_code && instr->skip_check()) return NULL; |
| 1771 | LOperand* index = UseRegisterOrConstantAtStart(instr->index()); |
| 1772 | LOperand* length = !index->IsConstantOperand() |
| 1773 | ? UseOrConstantAtStart(instr->length()) |
| 1774 | : UseAtStart(instr->length()); |
| 1775 | LInstruction* result = new(zone()) LBoundsCheck(index, length); |
| 1776 | if (!FLAG_debug_code || !instr->skip_check()) { |
| 1777 | result = AssignEnvironment(result); |
| 1778 | } |
| 1779 | return result; |
| 1780 | } |
| 1781 | |
| 1782 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1783 | LInstruction* LChunkBuilder::DoAbnormalExit(HAbnormalExit* instr) { |
| 1784 | // The control instruction marking the end of a block that completed |
| 1785 | // abruptly (e.g., threw an exception). There is nothing specific to do. |
| 1786 | return NULL; |
| 1787 | } |
| 1788 | |
| 1789 | |
| 1790 | LInstruction* LChunkBuilder::DoUseConst(HUseConst* instr) { |
| 1791 | return NULL; |
| 1792 | } |
| 1793 | |
| 1794 | |
| 1795 | LInstruction* LChunkBuilder::DoForceRepresentation(HForceRepresentation* bad) { |
| 1796 | // All HForceRepresentation instructions should be eliminated in the |
| 1797 | // representation change phase of Hydrogen. |
| 1798 | UNREACHABLE(); |
| 1799 | return NULL; |
| 1800 | } |
| 1801 | |
| 1802 | |
| 1803 | LInstruction* LChunkBuilder::DoChange(HChange* instr) { |
| 1804 | Representation from = instr->from(); |
| 1805 | Representation to = instr->to(); |
| 1806 | HValue* val = instr->value(); |
| 1807 | if (from.IsSmi()) { |
| 1808 | if (to.IsTagged()) { |
| 1809 | LOperand* value = UseRegister(val); |
| 1810 | return DefineSameAsFirst(new(zone()) LDummyUse(value)); |
| 1811 | } |
| 1812 | from = Representation::Tagged(); |
| 1813 | } |
| 1814 | if (from.IsTagged()) { |
| 1815 | if (to.IsDouble()) { |
| 1816 | LOperand* value = UseRegister(val); |
| 1817 | LInstruction* result = DefineAsRegister(new(zone()) LNumberUntagD(value)); |
| 1818 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1819 | return result; |
| 1820 | } else if (to.IsSmi()) { |
| 1821 | LOperand* value = UseRegister(val); |
| 1822 | if (val->type().IsSmi()) { |
| 1823 | return DefineSameAsFirst(new(zone()) LDummyUse(value)); |
| 1824 | } |
| 1825 | return AssignEnvironment(DefineSameAsFirst(new(zone()) LCheckSmi(value))); |
| 1826 | } else { |
| 1827 | DCHECK(to.IsInteger32()); |
| 1828 | if (val->type().IsSmi() || val->representation().IsSmi()) { |
| 1829 | LOperand* value = UseRegister(val); |
| 1830 | return DefineSameAsFirst(new(zone()) LSmiUntag(value, false)); |
| 1831 | } else { |
| 1832 | LOperand* value = UseRegister(val); |
| 1833 | bool truncating = instr->CanTruncateToInt32(); |
| 1834 | LOperand* xmm_temp = truncating ? NULL : FixedTemp(xmm1); |
| 1835 | LInstruction* result = |
| 1836 | DefineSameAsFirst(new(zone()) LTaggedToI(value, xmm_temp)); |
| 1837 | if (!val->representation().IsSmi()) result = AssignEnvironment(result); |
| 1838 | return result; |
| 1839 | } |
| 1840 | } |
| 1841 | } else if (from.IsDouble()) { |
| 1842 | if (to.IsTagged()) { |
| 1843 | info()->MarkAsDeferredCalling(); |
| 1844 | LOperand* value = UseRegister(val); |
| 1845 | LOperand* temp = TempRegister(); |
| 1846 | LUnallocated* result_temp = TempRegister(); |
| 1847 | LNumberTagD* result = new(zone()) LNumberTagD(value, temp); |
| 1848 | return AssignPointerMap(Define(result, result_temp)); |
| 1849 | } else if (to.IsSmi()) { |
| 1850 | LOperand* value = UseRegister(val); |
| 1851 | return AssignEnvironment( |
| 1852 | DefineAsRegister(new(zone()) LDoubleToSmi(value))); |
| 1853 | } else { |
| 1854 | DCHECK(to.IsInteger32()); |
| 1855 | LOperand* value = UseRegister(val); |
| 1856 | LInstruction* result = DefineAsRegister(new(zone()) LDoubleToI(value)); |
| 1857 | if (!instr->CanTruncateToInt32()) result = AssignEnvironment(result); |
| 1858 | return result; |
| 1859 | } |
| 1860 | } else if (from.IsInteger32()) { |
| 1861 | info()->MarkAsDeferredCalling(); |
| 1862 | if (to.IsTagged()) { |
| 1863 | if (!instr->CheckFlag(HValue::kCanOverflow)) { |
| 1864 | LOperand* value = UseRegister(val); |
| 1865 | return DefineAsRegister(new(zone()) LSmiTag(value)); |
| 1866 | } else if (val->CheckFlag(HInstruction::kUint32)) { |
| 1867 | LOperand* value = UseRegister(val); |
| 1868 | LOperand* temp1 = TempRegister(); |
| 1869 | LOperand* temp2 = FixedTemp(xmm1); |
| 1870 | LNumberTagU* result = new(zone()) LNumberTagU(value, temp1, temp2); |
| 1871 | return AssignPointerMap(DefineSameAsFirst(result)); |
| 1872 | } else { |
| 1873 | LOperand* value = UseRegister(val); |
| 1874 | LOperand* temp1 = SmiValuesAre32Bits() ? NULL : TempRegister(); |
| 1875 | LOperand* temp2 = SmiValuesAre32Bits() ? NULL : FixedTemp(xmm1); |
| 1876 | LNumberTagI* result = new(zone()) LNumberTagI(value, temp1, temp2); |
| 1877 | return AssignPointerMap(DefineSameAsFirst(result)); |
| 1878 | } |
| 1879 | } else if (to.IsSmi()) { |
| 1880 | LOperand* value = UseRegister(val); |
| 1881 | LInstruction* result = DefineAsRegister(new(zone()) LSmiTag(value)); |
| 1882 | if (instr->CheckFlag(HValue::kCanOverflow)) { |
| 1883 | result = AssignEnvironment(result); |
| 1884 | } |
| 1885 | return result; |
| 1886 | } else { |
| 1887 | DCHECK(to.IsDouble()); |
| 1888 | if (val->CheckFlag(HInstruction::kUint32)) { |
| 1889 | return DefineAsRegister(new(zone()) LUint32ToDouble(UseRegister(val))); |
| 1890 | } else { |
| 1891 | LOperand* value = Use(val); |
| 1892 | return DefineAsRegister(new(zone()) LInteger32ToDouble(value)); |
| 1893 | } |
| 1894 | } |
| 1895 | } |
| 1896 | UNREACHABLE(); |
| 1897 | return NULL; |
| 1898 | } |
| 1899 | |
| 1900 | |
| 1901 | LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) { |
| 1902 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1903 | LInstruction* result = new(zone()) LCheckNonSmi(value); |
| 1904 | if (!instr->value()->type().IsHeapObject()) { |
| 1905 | result = AssignEnvironment(result); |
| 1906 | } |
| 1907 | return result; |
| 1908 | } |
| 1909 | |
| 1910 | |
| 1911 | LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) { |
| 1912 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1913 | return AssignEnvironment(new(zone()) LCheckSmi(value)); |
| 1914 | } |
| 1915 | |
| 1916 | |
| 1917 | LInstruction* LChunkBuilder::DoCheckArrayBufferNotNeutered( |
| 1918 | HCheckArrayBufferNotNeutered* instr) { |
| 1919 | LOperand* view = UseRegisterAtStart(instr->value()); |
| 1920 | LCheckArrayBufferNotNeutered* result = |
| 1921 | new (zone()) LCheckArrayBufferNotNeutered(view); |
| 1922 | return AssignEnvironment(result); |
| 1923 | } |
| 1924 | |
| 1925 | |
| 1926 | LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) { |
| 1927 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1928 | LCheckInstanceType* result = new(zone()) LCheckInstanceType(value); |
| 1929 | return AssignEnvironment(result); |
| 1930 | } |
| 1931 | |
| 1932 | |
| 1933 | LInstruction* LChunkBuilder::DoCheckValue(HCheckValue* instr) { |
| 1934 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1935 | return AssignEnvironment(new(zone()) LCheckValue(value)); |
| 1936 | } |
| 1937 | |
| 1938 | |
| 1939 | LInstruction* LChunkBuilder::DoCheckMaps(HCheckMaps* instr) { |
| 1940 | if (instr->IsStabilityCheck()) return new(zone()) LCheckMaps; |
| 1941 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 1942 | LInstruction* result = AssignEnvironment(new(zone()) LCheckMaps(value)); |
| 1943 | if (instr->HasMigrationTarget()) { |
| 1944 | info()->MarkAsDeferredCalling(); |
| 1945 | result = AssignPointerMap(result); |
| 1946 | } |
| 1947 | return result; |
| 1948 | } |
| 1949 | |
| 1950 | |
| 1951 | LInstruction* LChunkBuilder::DoClampToUint8(HClampToUint8* instr) { |
| 1952 | HValue* value = instr->value(); |
| 1953 | Representation input_rep = value->representation(); |
| 1954 | LOperand* reg = UseRegister(value); |
| 1955 | if (input_rep.IsDouble()) { |
| 1956 | return DefineAsRegister(new(zone()) LClampDToUint8(reg)); |
| 1957 | } else if (input_rep.IsInteger32()) { |
| 1958 | return DefineSameAsFirst(new(zone()) LClampIToUint8(reg)); |
| 1959 | } else { |
| 1960 | DCHECK(input_rep.IsSmiOrTagged()); |
| 1961 | // Register allocator doesn't (yet) support allocation of double |
| 1962 | // temps. Reserve xmm1 explicitly. |
| 1963 | LClampTToUint8* result = new(zone()) LClampTToUint8(reg, |
| 1964 | FixedTemp(xmm1)); |
| 1965 | return AssignEnvironment(DefineSameAsFirst(result)); |
| 1966 | } |
| 1967 | } |
| 1968 | |
| 1969 | |
| 1970 | LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) { |
| 1971 | HValue* value = instr->value(); |
| 1972 | DCHECK(value->representation().IsDouble()); |
| 1973 | return DefineAsRegister(new(zone()) LDoubleBits(UseRegister(value))); |
| 1974 | } |
| 1975 | |
| 1976 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1977 | LInstruction* LChunkBuilder::DoReturn(HReturn* instr) { |
| 1978 | LOperand* context = info()->IsStub() ? UseFixed(instr->context(), rsi) : NULL; |
| 1979 | LOperand* parameter_count = UseRegisterOrConstant(instr->parameter_count()); |
| 1980 | return new(zone()) LReturn( |
| 1981 | UseFixed(instr->value(), rax), context, parameter_count); |
| 1982 | } |
| 1983 | |
| 1984 | |
| 1985 | LInstruction* LChunkBuilder::DoConstant(HConstant* instr) { |
| 1986 | Representation r = instr->representation(); |
| 1987 | if (r.IsSmi()) { |
| 1988 | return DefineAsRegister(new(zone()) LConstantS); |
| 1989 | } else if (r.IsInteger32()) { |
| 1990 | return DefineAsRegister(new(zone()) LConstantI); |
| 1991 | } else if (r.IsDouble()) { |
| 1992 | return DefineAsRegister(new (zone()) LConstantD); |
| 1993 | } else if (r.IsExternal()) { |
| 1994 | return DefineAsRegister(new(zone()) LConstantE); |
| 1995 | } else if (r.IsTagged()) { |
| 1996 | return DefineAsRegister(new(zone()) LConstantT); |
| 1997 | } else { |
| 1998 | UNREACHABLE(); |
| 1999 | return NULL; |
| 2000 | } |
| 2001 | } |
| 2002 | |
| 2003 | |
| 2004 | LInstruction* LChunkBuilder::DoLoadGlobalGeneric(HLoadGlobalGeneric* instr) { |
| 2005 | LOperand* context = UseFixed(instr->context(), rsi); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2006 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2007 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2008 | LLoadGlobalGeneric* result = new (zone()) LLoadGlobalGeneric(context, vector); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2009 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 2010 | } |
| 2011 | |
| 2012 | |
| 2013 | LInstruction* LChunkBuilder::DoLoadContextSlot(HLoadContextSlot* instr) { |
| 2014 | LOperand* context = UseRegisterAtStart(instr->value()); |
| 2015 | LInstruction* result = |
| 2016 | DefineAsRegister(new(zone()) LLoadContextSlot(context)); |
| 2017 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 2018 | result = AssignEnvironment(result); |
| 2019 | } |
| 2020 | return result; |
| 2021 | } |
| 2022 | |
| 2023 | |
| 2024 | LInstruction* LChunkBuilder::DoStoreContextSlot(HStoreContextSlot* instr) { |
| 2025 | LOperand* context; |
| 2026 | LOperand* value; |
| 2027 | LOperand* temp; |
| 2028 | context = UseRegister(instr->context()); |
| 2029 | if (instr->NeedsWriteBarrier()) { |
| 2030 | value = UseTempRegister(instr->value()); |
| 2031 | temp = TempRegister(); |
| 2032 | } else { |
| 2033 | value = UseRegister(instr->value()); |
| 2034 | temp = NULL; |
| 2035 | } |
| 2036 | LInstruction* result = new(zone()) LStoreContextSlot(context, value, temp); |
| 2037 | if (instr->RequiresHoleCheck() && instr->DeoptimizesOnHole()) { |
| 2038 | result = AssignEnvironment(result); |
| 2039 | } |
| 2040 | return result; |
| 2041 | } |
| 2042 | |
| 2043 | |
| 2044 | LInstruction* LChunkBuilder::DoLoadNamedField(HLoadNamedField* instr) { |
| 2045 | // Use the special mov rax, moffs64 encoding for external |
| 2046 | // memory accesses with 64-bit word-sized values. |
| 2047 | if (instr->access().IsExternalMemory() && |
| 2048 | instr->access().offset() == 0 && |
| 2049 | (instr->access().representation().IsSmi() || |
| 2050 | instr->access().representation().IsTagged() || |
| 2051 | instr->access().representation().IsHeapObject() || |
| 2052 | instr->access().representation().IsExternal())) { |
| 2053 | LOperand* obj = UseRegisterOrConstantAtStart(instr->object()); |
| 2054 | return DefineFixed(new(zone()) LLoadNamedField(obj), rax); |
| 2055 | } |
| 2056 | LOperand* obj = UseRegisterAtStart(instr->object()); |
| 2057 | return DefineAsRegister(new(zone()) LLoadNamedField(obj)); |
| 2058 | } |
| 2059 | |
| 2060 | |
| 2061 | LInstruction* LChunkBuilder::DoLoadNamedGeneric(HLoadNamedGeneric* instr) { |
| 2062 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2063 | LOperand* object = |
| 2064 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2065 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2066 | LLoadNamedGeneric* result = new(zone()) LLoadNamedGeneric( |
| 2067 | context, object, vector); |
| 2068 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 2069 | } |
| 2070 | |
| 2071 | |
| 2072 | LInstruction* LChunkBuilder::DoLoadFunctionPrototype( |
| 2073 | HLoadFunctionPrototype* instr) { |
| 2074 | return AssignEnvironment(DefineAsRegister( |
| 2075 | new(zone()) LLoadFunctionPrototype(UseRegister(instr->function())))); |
| 2076 | } |
| 2077 | |
| 2078 | |
| 2079 | LInstruction* LChunkBuilder::DoLoadRoot(HLoadRoot* instr) { |
| 2080 | return DefineAsRegister(new(zone()) LLoadRoot); |
| 2081 | } |
| 2082 | |
| 2083 | |
| 2084 | void LChunkBuilder::FindDehoistedKeyDefinitions(HValue* candidate) { |
| 2085 | // We sign extend the dehoisted key at the definition point when the pointer |
| 2086 | // size is 64-bit. For x32 port, we sign extend the dehoisted key at the use |
| 2087 | // points and should not invoke this function. We can't use STATIC_ASSERT |
| 2088 | // here as the pointer size is 32-bit for x32. |
| 2089 | DCHECK(kPointerSize == kInt64Size); |
| 2090 | BitVector* dehoisted_key_ids = chunk_->GetDehoistedKeyIds(); |
| 2091 | if (dehoisted_key_ids->Contains(candidate->id())) return; |
| 2092 | dehoisted_key_ids->Add(candidate->id()); |
| 2093 | if (!candidate->IsPhi()) return; |
| 2094 | for (int i = 0; i < candidate->OperandCount(); ++i) { |
| 2095 | FindDehoistedKeyDefinitions(candidate->OperandAt(i)); |
| 2096 | } |
| 2097 | } |
| 2098 | |
| 2099 | |
| 2100 | LInstruction* LChunkBuilder::DoLoadKeyed(HLoadKeyed* instr) { |
| 2101 | DCHECK((kPointerSize == kInt64Size && |
| 2102 | instr->key()->representation().IsInteger32()) || |
| 2103 | (kPointerSize == kInt32Size && |
| 2104 | instr->key()->representation().IsSmiOrInteger32())); |
| 2105 | ElementsKind elements_kind = instr->elements_kind(); |
| 2106 | LOperand* key = NULL; |
| 2107 | LInstruction* result = NULL; |
| 2108 | |
| 2109 | if (kPointerSize == kInt64Size) { |
| 2110 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 2111 | } else { |
| 2112 | bool clobbers_key = ExternalArrayOpRequiresTemp( |
| 2113 | instr->key()->representation(), elements_kind); |
| 2114 | key = clobbers_key |
| 2115 | ? UseTempRegister(instr->key()) |
| 2116 | : UseRegisterOrConstantAtStart(instr->key()); |
| 2117 | } |
| 2118 | |
| 2119 | if ((kPointerSize == kInt64Size) && instr->IsDehoisted()) { |
| 2120 | FindDehoistedKeyDefinitions(instr->key()); |
| 2121 | } |
| 2122 | |
| 2123 | if (!instr->is_fixed_typed_array()) { |
| 2124 | LOperand* obj = UseRegisterAtStart(instr->elements()); |
| 2125 | result = DefineAsRegister(new (zone()) LLoadKeyed(obj, key, nullptr)); |
| 2126 | } else { |
| 2127 | DCHECK( |
| 2128 | (instr->representation().IsInteger32() && |
| 2129 | !(IsDoubleOrFloatElementsKind(elements_kind))) || |
| 2130 | (instr->representation().IsDouble() && |
| 2131 | (IsDoubleOrFloatElementsKind(elements_kind)))); |
| 2132 | LOperand* backing_store = UseRegister(instr->elements()); |
| 2133 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 2134 | result = DefineAsRegister( |
| 2135 | new (zone()) LLoadKeyed(backing_store, key, backing_store_owner)); |
| 2136 | } |
| 2137 | |
| 2138 | bool needs_environment; |
| 2139 | if (instr->is_fixed_typed_array()) { |
| 2140 | // see LCodeGen::DoLoadKeyedExternalArray |
| 2141 | needs_environment = elements_kind == UINT32_ELEMENTS && |
| 2142 | !instr->CheckFlag(HInstruction::kUint32); |
| 2143 | } else { |
| 2144 | // see LCodeGen::DoLoadKeyedFixedDoubleArray and |
| 2145 | // LCodeGen::DoLoadKeyedFixedArray |
| 2146 | needs_environment = |
| 2147 | instr->RequiresHoleCheck() || |
| 2148 | (instr->hole_mode() == CONVERT_HOLE_TO_UNDEFINED && info()->IsStub()); |
| 2149 | } |
| 2150 | |
| 2151 | if (needs_environment) { |
| 2152 | result = AssignEnvironment(result); |
| 2153 | } |
| 2154 | return result; |
| 2155 | } |
| 2156 | |
| 2157 | |
| 2158 | LInstruction* LChunkBuilder::DoLoadKeyedGeneric(HLoadKeyedGeneric* instr) { |
| 2159 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2160 | LOperand* object = |
| 2161 | UseFixed(instr->object(), LoadDescriptor::ReceiverRegister()); |
| 2162 | LOperand* key = UseFixed(instr->key(), LoadDescriptor::NameRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2163 | LOperand* vector = FixedTemp(LoadWithVectorDescriptor::VectorRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2164 | |
| 2165 | LLoadKeyedGeneric* result = |
| 2166 | new(zone()) LLoadKeyedGeneric(context, object, key, vector); |
| 2167 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 2168 | } |
| 2169 | |
| 2170 | |
| 2171 | LInstruction* LChunkBuilder::DoStoreKeyed(HStoreKeyed* instr) { |
| 2172 | ElementsKind elements_kind = instr->elements_kind(); |
| 2173 | |
| 2174 | if ((kPointerSize == kInt64Size) && instr->IsDehoisted()) { |
| 2175 | FindDehoistedKeyDefinitions(instr->key()); |
| 2176 | } |
| 2177 | |
| 2178 | if (!instr->is_fixed_typed_array()) { |
| 2179 | DCHECK(instr->elements()->representation().IsTagged()); |
| 2180 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 2181 | LOperand* object = NULL; |
| 2182 | LOperand* key = NULL; |
| 2183 | LOperand* val = NULL; |
| 2184 | |
| 2185 | Representation value_representation = instr->value()->representation(); |
| 2186 | if (value_representation.IsDouble()) { |
| 2187 | object = UseRegisterAtStart(instr->elements()); |
| 2188 | val = UseRegisterAtStart(instr->value()); |
| 2189 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 2190 | } else { |
| 2191 | DCHECK(value_representation.IsSmiOrTagged() || |
| 2192 | value_representation.IsInteger32()); |
| 2193 | if (needs_write_barrier) { |
| 2194 | object = UseTempRegister(instr->elements()); |
| 2195 | val = UseTempRegister(instr->value()); |
| 2196 | key = UseTempRegister(instr->key()); |
| 2197 | } else { |
| 2198 | object = UseRegisterAtStart(instr->elements()); |
| 2199 | val = UseRegisterOrConstantAtStart(instr->value()); |
| 2200 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 2201 | } |
| 2202 | } |
| 2203 | |
| 2204 | return new (zone()) LStoreKeyed(object, key, val, nullptr); |
| 2205 | } |
| 2206 | |
| 2207 | DCHECK( |
| 2208 | (instr->value()->representation().IsInteger32() && |
| 2209 | !IsDoubleOrFloatElementsKind(elements_kind)) || |
| 2210 | (instr->value()->representation().IsDouble() && |
| 2211 | IsDoubleOrFloatElementsKind(elements_kind))); |
| 2212 | DCHECK(instr->elements()->representation().IsExternal()); |
| 2213 | bool val_is_temp_register = elements_kind == UINT8_CLAMPED_ELEMENTS || |
| 2214 | elements_kind == FLOAT32_ELEMENTS; |
| 2215 | LOperand* val = val_is_temp_register ? UseTempRegister(instr->value()) |
| 2216 | : UseRegister(instr->value()); |
| 2217 | LOperand* key = NULL; |
| 2218 | if (kPointerSize == kInt64Size) { |
| 2219 | key = UseRegisterOrConstantAtStart(instr->key()); |
| 2220 | } else { |
| 2221 | bool clobbers_key = ExternalArrayOpRequiresTemp( |
| 2222 | instr->key()->representation(), elements_kind); |
| 2223 | key = clobbers_key |
| 2224 | ? UseTempRegister(instr->key()) |
| 2225 | : UseRegisterOrConstantAtStart(instr->key()); |
| 2226 | } |
| 2227 | LOperand* backing_store = UseRegister(instr->elements()); |
| 2228 | LOperand* backing_store_owner = UseAny(instr->backing_store_owner()); |
| 2229 | return new (zone()) LStoreKeyed(backing_store, key, val, backing_store_owner); |
| 2230 | } |
| 2231 | |
| 2232 | |
| 2233 | LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) { |
| 2234 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2235 | LOperand* object = |
| 2236 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 2237 | LOperand* key = UseFixed(instr->key(), StoreDescriptor::NameRegister()); |
| 2238 | LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
| 2239 | |
| 2240 | DCHECK(instr->object()->representation().IsTagged()); |
| 2241 | DCHECK(instr->key()->representation().IsTagged()); |
| 2242 | DCHECK(instr->value()->representation().IsTagged()); |
| 2243 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2244 | LOperand* slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 2245 | LOperand* vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2246 | |
| 2247 | LStoreKeyedGeneric* result = new (zone()) |
| 2248 | LStoreKeyedGeneric(context, object, key, value, slot, vector); |
| 2249 | return MarkAsCall(result, instr); |
| 2250 | } |
| 2251 | |
| 2252 | |
| 2253 | LInstruction* LChunkBuilder::DoTransitionElementsKind( |
| 2254 | HTransitionElementsKind* instr) { |
| 2255 | if (IsSimpleMapChangeTransition(instr->from_kind(), instr->to_kind())) { |
| 2256 | LOperand* object = UseRegister(instr->object()); |
| 2257 | LOperand* new_map_reg = TempRegister(); |
| 2258 | LOperand* temp_reg = TempRegister(); |
| 2259 | LTransitionElementsKind* result = new(zone()) LTransitionElementsKind( |
| 2260 | object, NULL, new_map_reg, temp_reg); |
| 2261 | return result; |
| 2262 | } else { |
| 2263 | LOperand* object = UseFixed(instr->object(), rax); |
| 2264 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2265 | LTransitionElementsKind* result = |
| 2266 | new(zone()) LTransitionElementsKind(object, context, NULL, NULL); |
| 2267 | return MarkAsCall(result, instr); |
| 2268 | } |
| 2269 | } |
| 2270 | |
| 2271 | |
| 2272 | LInstruction* LChunkBuilder::DoTrapAllocationMemento( |
| 2273 | HTrapAllocationMemento* instr) { |
| 2274 | LOperand* object = UseRegister(instr->object()); |
| 2275 | LOperand* temp = TempRegister(); |
| 2276 | LTrapAllocationMemento* result = |
| 2277 | new(zone()) LTrapAllocationMemento(object, temp); |
| 2278 | return AssignEnvironment(result); |
| 2279 | } |
| 2280 | |
| 2281 | |
| 2282 | LInstruction* LChunkBuilder::DoMaybeGrowElements(HMaybeGrowElements* instr) { |
| 2283 | info()->MarkAsDeferredCalling(); |
| 2284 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2285 | LOperand* object = Use(instr->object()); |
| 2286 | LOperand* elements = Use(instr->elements()); |
| 2287 | LOperand* key = UseRegisterOrConstant(instr->key()); |
| 2288 | LOperand* current_capacity = UseRegisterOrConstant(instr->current_capacity()); |
| 2289 | |
| 2290 | LMaybeGrowElements* result = new (zone()) |
| 2291 | LMaybeGrowElements(context, object, elements, key, current_capacity); |
| 2292 | DefineFixed(result, rax); |
| 2293 | return AssignPointerMap(AssignEnvironment(result)); |
| 2294 | } |
| 2295 | |
| 2296 | |
| 2297 | LInstruction* LChunkBuilder::DoStoreNamedField(HStoreNamedField* instr) { |
| 2298 | bool is_in_object = instr->access().IsInobject(); |
| 2299 | bool is_external_location = instr->access().IsExternalMemory() && |
| 2300 | instr->access().offset() == 0; |
| 2301 | bool needs_write_barrier = instr->NeedsWriteBarrier(); |
| 2302 | bool needs_write_barrier_for_map = instr->has_transition() && |
| 2303 | instr->NeedsWriteBarrierForMap(); |
| 2304 | |
| 2305 | LOperand* obj; |
| 2306 | if (needs_write_barrier) { |
| 2307 | obj = is_in_object |
| 2308 | ? UseRegister(instr->object()) |
| 2309 | : UseTempRegister(instr->object()); |
| 2310 | } else if (is_external_location) { |
| 2311 | DCHECK(!is_in_object); |
| 2312 | DCHECK(!needs_write_barrier); |
| 2313 | DCHECK(!needs_write_barrier_for_map); |
| 2314 | obj = UseRegisterOrConstant(instr->object()); |
| 2315 | } else { |
| 2316 | obj = needs_write_barrier_for_map |
| 2317 | ? UseRegister(instr->object()) |
| 2318 | : UseRegisterAtStart(instr->object()); |
| 2319 | } |
| 2320 | |
| 2321 | bool can_be_constant = instr->value()->IsConstant() && |
| 2322 | HConstant::cast(instr->value())->NotInNewSpace() && |
| 2323 | !instr->field_representation().IsDouble(); |
| 2324 | |
| 2325 | LOperand* val; |
| 2326 | if (needs_write_barrier) { |
| 2327 | val = UseTempRegister(instr->value()); |
| 2328 | } else if (is_external_location) { |
| 2329 | val = UseFixed(instr->value(), rax); |
| 2330 | } else if (can_be_constant) { |
| 2331 | val = UseRegisterOrConstant(instr->value()); |
| 2332 | } else if (instr->field_representation().IsDouble()) { |
| 2333 | val = UseRegisterAtStart(instr->value()); |
| 2334 | } else { |
| 2335 | val = UseRegister(instr->value()); |
| 2336 | } |
| 2337 | |
| 2338 | // We only need a scratch register if we have a write barrier or we |
| 2339 | // have a store into the properties array (not in-object-property). |
| 2340 | LOperand* temp = (!is_in_object || needs_write_barrier || |
| 2341 | needs_write_barrier_for_map) ? TempRegister() : NULL; |
| 2342 | |
| 2343 | return new(zone()) LStoreNamedField(obj, val, temp); |
| 2344 | } |
| 2345 | |
| 2346 | |
| 2347 | LInstruction* LChunkBuilder::DoStoreNamedGeneric(HStoreNamedGeneric* instr) { |
| 2348 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2349 | LOperand* object = |
| 2350 | UseFixed(instr->object(), StoreDescriptor::ReceiverRegister()); |
| 2351 | LOperand* value = UseFixed(instr->value(), StoreDescriptor::ValueRegister()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2352 | LOperand* slot = FixedTemp(VectorStoreICDescriptor::SlotRegister()); |
| 2353 | LOperand* vector = FixedTemp(VectorStoreICDescriptor::VectorRegister()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2354 | |
| 2355 | LStoreNamedGeneric* result = |
| 2356 | new (zone()) LStoreNamedGeneric(context, object, value, slot, vector); |
| 2357 | return MarkAsCall(result, instr); |
| 2358 | } |
| 2359 | |
| 2360 | |
| 2361 | LInstruction* LChunkBuilder::DoStringAdd(HStringAdd* instr) { |
| 2362 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2363 | LOperand* left = UseFixed(instr->left(), rdx); |
| 2364 | LOperand* right = UseFixed(instr->right(), rax); |
| 2365 | return MarkAsCall( |
| 2366 | DefineFixed(new(zone()) LStringAdd(context, left, right), rax), instr); |
| 2367 | } |
| 2368 | |
| 2369 | |
| 2370 | LInstruction* LChunkBuilder::DoStringCharCodeAt(HStringCharCodeAt* instr) { |
| 2371 | LOperand* string = UseTempRegister(instr->string()); |
| 2372 | LOperand* index = UseTempRegister(instr->index()); |
| 2373 | LOperand* context = UseAny(instr->context()); |
| 2374 | LStringCharCodeAt* result = |
| 2375 | new(zone()) LStringCharCodeAt(context, string, index); |
| 2376 | return AssignPointerMap(DefineAsRegister(result)); |
| 2377 | } |
| 2378 | |
| 2379 | |
| 2380 | LInstruction* LChunkBuilder::DoStringCharFromCode(HStringCharFromCode* instr) { |
| 2381 | LOperand* char_code = UseRegister(instr->value()); |
| 2382 | LOperand* context = UseAny(instr->context()); |
| 2383 | LStringCharFromCode* result = |
| 2384 | new(zone()) LStringCharFromCode(context, char_code); |
| 2385 | return AssignPointerMap(DefineAsRegister(result)); |
| 2386 | } |
| 2387 | |
| 2388 | |
| 2389 | LInstruction* LChunkBuilder::DoAllocate(HAllocate* instr) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2390 | LOperand* size = instr->size()->IsConstant() ? UseConstant(instr->size()) |
| 2391 | : UseRegister(instr->size()); |
| 2392 | if (instr->IsAllocationFolded()) { |
| 2393 | LOperand* temp = TempRegister(); |
| 2394 | LFastAllocate* result = new (zone()) LFastAllocate(size, temp); |
| 2395 | return DefineAsRegister(result); |
| 2396 | } else { |
| 2397 | info()->MarkAsDeferredCalling(); |
| 2398 | LOperand* context = UseAny(instr->context()); |
| 2399 | LOperand* temp = TempRegister(); |
| 2400 | LAllocate* result = new (zone()) LAllocate(context, size, temp); |
| 2401 | return AssignPointerMap(DefineAsRegister(result)); |
| 2402 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2403 | } |
| 2404 | |
| 2405 | |
| 2406 | LInstruction* LChunkBuilder::DoOsrEntry(HOsrEntry* instr) { |
| 2407 | DCHECK(argument_count_ == 0); |
| 2408 | allocator_->MarkAsOsrEntry(); |
| 2409 | current_block_->last_environment()->set_ast_id(instr->ast_id()); |
| 2410 | return AssignEnvironment(new(zone()) LOsrEntry); |
| 2411 | } |
| 2412 | |
| 2413 | |
| 2414 | LInstruction* LChunkBuilder::DoParameter(HParameter* instr) { |
| 2415 | LParameter* result = new(zone()) LParameter; |
| 2416 | if (instr->kind() == HParameter::STACK_PARAMETER) { |
| 2417 | int spill_index = chunk()->GetParameterStackSlot(instr->index()); |
| 2418 | return DefineAsSpilled(result, spill_index); |
| 2419 | } else { |
| 2420 | DCHECK(info()->IsStub()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2421 | CallInterfaceDescriptor descriptor = graph()->descriptor(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2422 | int index = static_cast<int>(instr->index()); |
| 2423 | Register reg = descriptor.GetRegisterParameter(index); |
| 2424 | return DefineFixed(result, reg); |
| 2425 | } |
| 2426 | } |
| 2427 | |
| 2428 | |
| 2429 | LInstruction* LChunkBuilder::DoUnknownOSRValue(HUnknownOSRValue* instr) { |
| 2430 | // Use an index that corresponds to the location in the unoptimized frame, |
| 2431 | // which the optimized frame will subsume. |
| 2432 | int env_index = instr->index(); |
| 2433 | int spill_index = 0; |
| 2434 | if (instr->environment()->is_parameter_index(env_index)) { |
| 2435 | spill_index = chunk()->GetParameterStackSlot(env_index); |
| 2436 | } else { |
| 2437 | spill_index = env_index - instr->environment()->first_local_index(); |
| 2438 | if (spill_index > LUnallocated::kMaxFixedSlotIndex) { |
| 2439 | Retry(kTooManySpillSlotsNeededForOSR); |
| 2440 | spill_index = 0; |
| 2441 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2442 | spill_index += StandardFrameConstants::kFixedSlotCount; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2443 | } |
| 2444 | return DefineAsSpilled(new(zone()) LUnknownOSRValue, spill_index); |
| 2445 | } |
| 2446 | |
| 2447 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2448 | LInstruction* LChunkBuilder::DoArgumentsObject(HArgumentsObject* instr) { |
| 2449 | // There are no real uses of the arguments object. |
| 2450 | // arguments.length and element access are supported directly on |
| 2451 | // stack arguments, and any real arguments object use causes a bailout. |
| 2452 | // So this value is never used. |
| 2453 | return NULL; |
| 2454 | } |
| 2455 | |
| 2456 | |
| 2457 | LInstruction* LChunkBuilder::DoCapturedObject(HCapturedObject* instr) { |
| 2458 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2459 | |
| 2460 | // There are no real uses of a captured object. |
| 2461 | return NULL; |
| 2462 | } |
| 2463 | |
| 2464 | |
| 2465 | LInstruction* LChunkBuilder::DoAccessArgumentsAt(HAccessArgumentsAt* instr) { |
| 2466 | info()->MarkAsRequiresFrame(); |
| 2467 | LOperand* args = UseRegister(instr->arguments()); |
| 2468 | LOperand* length; |
| 2469 | LOperand* index; |
| 2470 | if (instr->length()->IsConstant() && instr->index()->IsConstant()) { |
| 2471 | length = UseRegisterOrConstant(instr->length()); |
| 2472 | index = UseOrConstant(instr->index()); |
| 2473 | } else { |
| 2474 | length = UseTempRegister(instr->length()); |
| 2475 | index = Use(instr->index()); |
| 2476 | } |
| 2477 | return DefineAsRegister(new(zone()) LAccessArgumentsAt(args, length, index)); |
| 2478 | } |
| 2479 | |
| 2480 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2481 | LInstruction* LChunkBuilder::DoTypeof(HTypeof* instr) { |
| 2482 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2483 | LOperand* value = UseFixed(instr->value(), rbx); |
| 2484 | LTypeof* result = new(zone()) LTypeof(context, value); |
| 2485 | return MarkAsCall(DefineFixed(result, rax), instr); |
| 2486 | } |
| 2487 | |
| 2488 | |
| 2489 | LInstruction* LChunkBuilder::DoTypeofIsAndBranch(HTypeofIsAndBranch* instr) { |
| 2490 | return new(zone()) LTypeofIsAndBranch(UseTempRegister(instr->value())); |
| 2491 | } |
| 2492 | |
| 2493 | |
| 2494 | LInstruction* LChunkBuilder::DoSimulate(HSimulate* instr) { |
| 2495 | instr->ReplayEnvironment(current_block_->last_environment()); |
| 2496 | return NULL; |
| 2497 | } |
| 2498 | |
| 2499 | |
| 2500 | LInstruction* LChunkBuilder::DoStackCheck(HStackCheck* instr) { |
| 2501 | info()->MarkAsDeferredCalling(); |
| 2502 | if (instr->is_function_entry()) { |
| 2503 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2504 | return MarkAsCall(new(zone()) LStackCheck(context), instr); |
| 2505 | } else { |
| 2506 | DCHECK(instr->is_backwards_branch()); |
| 2507 | LOperand* context = UseAny(instr->context()); |
| 2508 | return AssignEnvironment( |
| 2509 | AssignPointerMap(new(zone()) LStackCheck(context))); |
| 2510 | } |
| 2511 | } |
| 2512 | |
| 2513 | |
| 2514 | LInstruction* LChunkBuilder::DoEnterInlined(HEnterInlined* instr) { |
| 2515 | HEnvironment* outer = current_block_->last_environment(); |
| 2516 | outer->set_ast_id(instr->ReturnId()); |
| 2517 | HConstant* undefined = graph()->GetConstantUndefined(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2518 | HEnvironment* inner = outer->CopyForInlining( |
| 2519 | instr->closure(), instr->arguments_count(), instr->function(), undefined, |
| 2520 | instr->inlining_kind(), instr->syntactic_tail_call_mode()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2521 | // Only replay binding of arguments object if it wasn't removed from graph. |
| 2522 | if (instr->arguments_var() != NULL && instr->arguments_object()->IsLinked()) { |
| 2523 | inner->Bind(instr->arguments_var(), instr->arguments_object()); |
| 2524 | } |
| 2525 | inner->BindContext(instr->closure_context()); |
| 2526 | inner->set_entry(instr); |
| 2527 | current_block_->UpdateEnvironment(inner); |
| 2528 | chunk_->AddInlinedFunction(instr->shared()); |
| 2529 | return NULL; |
| 2530 | } |
| 2531 | |
| 2532 | |
| 2533 | LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
| 2534 | LInstruction* pop = NULL; |
| 2535 | |
| 2536 | HEnvironment* env = current_block_->last_environment(); |
| 2537 | |
| 2538 | if (env->entry()->arguments_pushed()) { |
| 2539 | int argument_count = env->arguments_environment()->parameter_count(); |
| 2540 | pop = new(zone()) LDrop(argument_count); |
| 2541 | DCHECK(instr->argument_delta() == -argument_count); |
| 2542 | } |
| 2543 | |
| 2544 | HEnvironment* outer = current_block_->last_environment()-> |
| 2545 | DiscardInlined(false); |
| 2546 | current_block_->UpdateEnvironment(outer); |
| 2547 | |
| 2548 | return pop; |
| 2549 | } |
| 2550 | |
| 2551 | |
| 2552 | LInstruction* LChunkBuilder::DoForInPrepareMap(HForInPrepareMap* instr) { |
| 2553 | LOperand* context = UseFixed(instr->context(), rsi); |
| 2554 | LOperand* object = UseFixed(instr->enumerable(), rax); |
| 2555 | LForInPrepareMap* result = new(zone()) LForInPrepareMap(context, object); |
| 2556 | return MarkAsCall(DefineFixed(result, rax), instr, CAN_DEOPTIMIZE_EAGERLY); |
| 2557 | } |
| 2558 | |
| 2559 | |
| 2560 | LInstruction* LChunkBuilder::DoForInCacheArray(HForInCacheArray* instr) { |
| 2561 | LOperand* map = UseRegister(instr->map()); |
| 2562 | return AssignEnvironment(DefineAsRegister( |
| 2563 | new(zone()) LForInCacheArray(map))); |
| 2564 | } |
| 2565 | |
| 2566 | |
| 2567 | LInstruction* LChunkBuilder::DoCheckMapValue(HCheckMapValue* instr) { |
| 2568 | LOperand* value = UseRegisterAtStart(instr->value()); |
| 2569 | LOperand* map = UseRegisterAtStart(instr->map()); |
| 2570 | return AssignEnvironment(new(zone()) LCheckMapValue(value, map)); |
| 2571 | } |
| 2572 | |
| 2573 | |
| 2574 | LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) { |
| 2575 | LOperand* object = UseRegister(instr->object()); |
| 2576 | LOperand* index = UseTempRegister(instr->index()); |
| 2577 | LLoadFieldByIndex* load = new(zone()) LLoadFieldByIndex(object, index); |
| 2578 | LInstruction* result = DefineSameAsFirst(load); |
| 2579 | return AssignPointerMap(result); |
| 2580 | } |
| 2581 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2582 | } // namespace internal |
| 2583 | } // namespace v8 |
| 2584 | |
| 2585 | #endif // V8_TARGET_ARCH_X64 |