// 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 NodeOriginTable;
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class RepresentationChanger;
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class RepresentationSelector;
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class SourcePositionTable;
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class TypeCache;
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class V8_EXPORT_PRIVATE SimplifiedLowering final {
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public:
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SimplifiedLowering(JSGraph* jsgraph, JSHeapBroker* js_heap_broker, Zone* zone,
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SourcePositionTable* source_position,
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NodeOriginTable* node_origins,
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PoisoningMitigationLevel poisoning_level);
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~SimplifiedLowering() {}
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void LowerAllNodes();
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void DoMax(Node* node, Operator const* op, MachineRepresentation rep);
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void DoMin(Node* node, Operator const* op, MachineRepresentation rep);
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void DoJSToNumberOrNumericTruncatesToFloat64(
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Node* node, RepresentationSelector* selector);
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void DoJSToNumberOrNumericTruncatesToWord32(Node* node,
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RepresentationSelector* selector);
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void DoShift(Node* node, Operator const* op, Type rhs_type);
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void DoIntegral32ToBit(Node* node);
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void DoOrderedNumberToBit(Node* node);
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void DoNumberToBit(Node* node);
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void DoIntegerToUint8Clamped(Node* node);
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void DoNumberToUint8Clamped(Node* node);
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void DoSigned32ToUint8Clamped(Node* node);
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void DoUnsigned32ToUint8Clamped(Node* node);
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private:
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JSGraph* const jsgraph_;
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JSHeapBroker* js_heap_broker_;
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Zone* const zone_;
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TypeCache const& type_cache_;
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SetOncePointer<Node> to_number_code_;
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SetOncePointer<Node> to_number_convert_big_int_code_;
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SetOncePointer<Node> to_numeric_code_;
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SetOncePointer<Operator const> to_number_operator_;
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SetOncePointer<Operator const> to_number_convert_big_int_operator_;
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SetOncePointer<Operator const> to_numeric_operator_;
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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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NodeOriginTable* node_origins_;
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PoisoningMitigationLevel poisoning_level_;
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Node* Float64Round(Node* const node);
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Node* Float64Sign(Node* const node);
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Node* Int32Abs(Node* const node);
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Node* Int32Div(Node* const node);
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Node* Int32Mod(Node* const node);
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Node* Int32Sign(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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Node* ToNumberCode();
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Node* ToNumberConvertBigIntCode();
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Node* ToNumericCode();
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Operator const* ToNumberOperator();
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Operator const* ToNumberConvertBigIntOperator();
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Operator const* ToNumericOperator();
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friend class RepresentationSelector;
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Isolate* isolate() { return jsgraph_->isolate(); }
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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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SimplifiedOperatorBuilder* simplified() { return jsgraph()->simplified(); }
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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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