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// Copyright 2013 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_CRANKSHAFT_HYDROGEN_RANGE_ANALYSIS_H_
#define V8_CRANKSHAFT_HYDROGEN_RANGE_ANALYSIS_H_
#include "src/base/compiler-specific.h"
#include "src/crankshaft/hydrogen.h"
namespace v8 {
namespace internal {
class HRangeAnalysisPhase : public HPhase {
public:
explicit HRangeAnalysisPhase(HGraph* graph)
: HPhase("H_Range analysis", graph), changed_ranges_(16, zone()),
in_worklist_(graph->GetMaximumValueID(), zone()),
worklist_(32, zone()) {}
void Run();
private:
PRINTF_FORMAT(2, 3) void TraceRange(const char* msg, ...);
void InferControlFlowRange(HCompareNumericAndBranch* test,
HBasicBlock* dest);
void UpdateControlFlowRange(Token::Value op, HValue* value, HValue* other);
void InferRange(HValue* value);
void RollBackTo(int index);
void AddRange(HValue* value, Range* range);
void AddToWorklist(HValue* value) {
if (in_worklist_.Contains(value->id())) return;
in_worklist_.Add(value->id());
worklist_.Add(value, zone());
}
void PropagateMinusZeroChecks(HValue* value);
void PoisonRanges();
ZoneList<HValue*> changed_ranges_;
BitVector in_worklist_;
ZoneList<HValue*> worklist_;
DISALLOW_COPY_AND_ASSIGN(HRangeAnalysisPhase);
};
} // namespace internal
} // namespace v8
#endif // V8_CRANKSHAFT_HYDROGEN_RANGE_ANALYSIS_H_
Version data entries
9 entries across 9 versions & 2 rubygems