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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_
#define V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_
#include "src/base/compiler-specific.h"
#include "src/bit-vector.h"
#include "src/compiler/escape-analysis.h"
#include "src/compiler/graph-reducer.h"
#include "src/globals.h"
namespace v8 {
namespace internal {
namespace compiler {
// Forward declarations.
class JSGraph;
class V8_EXPORT_PRIVATE EscapeAnalysisReducer final
: public NON_EXPORTED_BASE(AdvancedReducer) {
public:
EscapeAnalysisReducer(Editor* editor, JSGraph* jsgraph,
EscapeAnalysis* escape_analysis, Zone* zone);
Reduction Reduce(Node* node) final;
// Verifies that all virtual allocation nodes have been dealt with. Run it
// after this reducer has been applied. Has no effect in release mode.
void VerifyReplacement() const;
bool compilation_failed() const { return compilation_failed_; }
private:
Reduction ReduceLoad(Node* node);
Reduction ReduceStore(Node* node);
Reduction ReduceAllocate(Node* node);
Reduction ReduceFinishRegion(Node* node);
Reduction ReduceReferenceEqual(Node* node);
Reduction ReduceObjectIsSmi(Node* node);
Reduction ReduceFrameStateUses(Node* node);
Node* ReduceDeoptState(Node* node, Node* effect, bool multiple_users);
Node* ReduceStateValueInput(Node* node, int node_index, Node* effect,
bool node_multiused, bool already_cloned,
bool multiple_users);
JSGraph* jsgraph() const { return jsgraph_; }
EscapeAnalysis* escape_analysis() const { return escape_analysis_; }
Zone* zone() const { return zone_; }
Isolate* isolate() const;
JSGraph* const jsgraph_;
EscapeAnalysis* escape_analysis_;
Zone* const zone_;
// This bit vector marks nodes we already processed (allocs, loads, stores)
// and nodes that do not need a visit from ReduceDeoptState etc.
BitVector fully_reduced_;
bool exists_virtual_allocate_;
bool compilation_failed_ = false;
DISALLOW_COPY_AND_ASSIGN(EscapeAnalysisReducer);
};
} // namespace compiler
} // namespace internal
} // namespace v8
#endif // V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_
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