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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/compiler/bytecode-graph-builder.h" | 5 #include "src/compiler/bytecode-graph-builder.h" |
6 | 6 |
7 #include "src/ast/ast.h" | 7 #include "src/ast/ast.h" |
8 #include "src/ast/scopes.h" | 8 #include "src/ast/scopes.h" |
9 #include "src/compilation-info.h" | 9 #include "src/compilation-info.h" |
10 #include "src/compiler/bytecode-branch-analysis.h" | 10 #include "src/compiler/bytecode-branch-analysis.h" |
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431 // Create OSR values for each environment value. | 431 // Create OSR values for each environment value. |
432 SetContext(graph()->NewNode( | 432 SetContext(graph()->NewNode( |
433 common()->OsrValue(Linkage::kOsrContextSpillSlotIndex), entry)); | 433 common()->OsrValue(Linkage::kOsrContextSpillSlotIndex), entry)); |
434 int size = static_cast<int>(values()->size()); | 434 int size = static_cast<int>(values()->size()); |
435 for (int i = 0; i < size; i++) { | 435 for (int i = 0; i < size; i++) { |
436 int idx = i; // Indexing scheme follows {StandardFrame}, adapt accordingly. | 436 int idx = i; // Indexing scheme follows {StandardFrame}, adapt accordingly. |
437 if (i >= register_base()) idx += InterpreterFrameConstants::kExtraSlotCount; | 437 if (i >= register_base()) idx += InterpreterFrameConstants::kExtraSlotCount; |
438 if (i >= accumulator_base()) idx = Linkage::kOsrAccumulatorRegisterIndex; | 438 if (i >= accumulator_base()) idx = Linkage::kOsrAccumulatorRegisterIndex; |
439 values()->at(i) = graph()->NewNode(common()->OsrValue(idx), entry); | 439 values()->at(i) = graph()->NewNode(common()->OsrValue(idx), entry); |
440 } | 440 } |
441 | |
442 BailoutId loop_id(builder_->bytecode_iterator().current_offset()); | |
443 Node* frame_state = | |
444 Checkpoint(loop_id, OutputFrameStateCombine::Ignore(), false); | |
445 Node* checkpoint = | |
446 graph()->NewNode(common()->Checkpoint(), frame_state, entry, entry); | |
447 UpdateEffectDependency(checkpoint); | |
448 | |
449 // Create the OSR guard nodes. | |
450 const Operator* guard_op = common()->OsrGuard(OsrGuardType::kUninitialized); | |
451 Node* effect = checkpoint; | |
452 for (int i = 0; i < size; i++) { | |
453 values()->at(i) = effect = | |
454 graph()->NewNode(guard_op, values()->at(i), effect, entry); | |
455 } | |
456 Node* context = effect = graph()->NewNode(guard_op, Context(), effect, entry); | |
457 SetContext(context); | |
458 UpdateEffectDependency(effect); | |
459 } | 441 } |
460 | 442 |
461 bool BytecodeGraphBuilder::Environment::StateValuesRequireUpdate( | 443 bool BytecodeGraphBuilder::Environment::StateValuesRequireUpdate( |
462 Node** state_values, int offset, int count) { | 444 Node** state_values, int offset, int count) { |
463 if (*state_values == nullptr) { | 445 if (*state_values == nullptr) { |
464 return true; | 446 return true; |
465 } | 447 } |
466 DCHECK_EQ((*state_values)->InputCount(), count); | 448 DCHECK_EQ((*state_values)->InputCount(), count); |
467 DCHECK_LE(static_cast<size_t>(offset + count), values()->size()); | 449 DCHECK_LE(static_cast<size_t>(offset + count), values()->size()); |
468 Node** env_values = (count == 0) ? nullptr : &values()->at(offset); | 450 Node** env_values = (count == 0) ? nullptr : &values()->at(offset); |
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2243 // Phi does not exist yet, introduce one. | 2225 // Phi does not exist yet, introduce one. |
2244 value = NewPhi(inputs, value, control); | 2226 value = NewPhi(inputs, value, control); |
2245 value->ReplaceInput(inputs - 1, other); | 2227 value->ReplaceInput(inputs - 1, other); |
2246 } | 2228 } |
2247 return value; | 2229 return value; |
2248 } | 2230 } |
2249 | 2231 |
2250 } // namespace compiler | 2232 } // namespace compiler |
2251 } // namespace internal | 2233 } // namespace internal |
2252 } // namespace v8 | 2234 } // namespace v8 |
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