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81 lines
2.7 KiB
81 lines
2.7 KiB
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_COMPILER_SIMPLIFIED_LOWERING_H_
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#define V8_COMPILER_SIMPLIFIED_LOWERING_H_
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#include "src/compiler/js-graph.h"
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#include "src/compiler/machine-operator.h"
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#include "src/compiler/node.h"
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#include "src/compiler/simplified-operator.h"
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namespace v8 {
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namespace internal {
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namespace compiler {
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// Forward declarations.
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class RepresentationChanger;
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class SourcePositionTable;
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class SimplifiedLowering final {
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public:
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SimplifiedLowering(JSGraph* jsgraph, Zone* zone,
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SourcePositionTable* source_positions);
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~SimplifiedLowering() {}
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void LowerAllNodes();
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// TODO(titzer): These are exposed for direct testing. Use a friend class.
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void DoAllocate(Node* node);
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void DoLoadField(Node* node);
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void DoStoreField(Node* node);
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// TODO(turbofan): The output_type can be removed once the result of the
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// representation analysis is stored in the node bounds.
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void DoLoadBuffer(Node* node, MachineType output_type,
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RepresentationChanger* changer);
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void DoStoreBuffer(Node* node);
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void DoLoadElement(Node* node);
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void DoStoreElement(Node* node);
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void DoShift(Node* node, Operator const* op);
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void DoStringEqual(Node* node);
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void DoStringLessThan(Node* node);
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void DoStringLessThanOrEqual(Node* node);
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private:
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JSGraph* const jsgraph_;
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Zone* const zone_;
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Type* const zero_thirtyone_range_;
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// TODO(danno): SimplifiedLowering shouldn't know anything about the source
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// positions table, but must for now since there currently is no other way to
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// pass down source position information to nodes created during
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// lowering. Once this phase becomes a vanilla reducer, it should get source
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// position information via the SourcePositionWrapper like all other reducers.
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SourcePositionTable* source_positions_;
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Node* SmiTag(Node* node);
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Node* IsTagged(Node* node);
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Node* Untag(Node* node);
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Node* OffsetMinusTagConstant(int32_t offset);
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Node* ComputeIndex(const ElementAccess& access, Node* const key);
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Node* StringComparison(Node* node, bool requires_ordering);
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Node* Int32Div(Node* const node);
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Node* Int32Mod(Node* const node);
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Node* Uint32Div(Node* const node);
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Node* Uint32Mod(Node* const node);
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friend class RepresentationSelector;
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Zone* zone() { return jsgraph_->zone(); }
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JSGraph* jsgraph() { return jsgraph_; }
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Graph* graph() { return jsgraph()->graph(); }
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CommonOperatorBuilder* common() { return jsgraph()->common(); }
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MachineOperatorBuilder* machine() { return jsgraph()->machine(); }
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};
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} // namespace compiler
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} // namespace internal
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} // namespace v8
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#endif // V8_COMPILER_SIMPLIFIED_LOWERING_H_
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