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Side by Side Diff: src/hydrogen-range-analysis.h

Issue 1405363003: Move Hydrogen and Lithium to src/crankshaft/ (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebased Created 5 years, 2 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef V8_HYDROGEN_RANGE_ANALYSIS_H_
6 #define V8_HYDROGEN_RANGE_ANALYSIS_H_
7
8 #include "src/hydrogen.h"
9
10 namespace v8 {
11 namespace internal {
12
13
14 class HRangeAnalysisPhase : public HPhase {
15 public:
16 explicit HRangeAnalysisPhase(HGraph* graph)
17 : HPhase("H_Range analysis", graph), changed_ranges_(16, zone()),
18 in_worklist_(graph->GetMaximumValueID(), zone()),
19 worklist_(32, zone()) {}
20
21 void Run();
22
23 private:
24 void TraceRange(const char* msg, ...);
25 void InferControlFlowRange(HCompareNumericAndBranch* test,
26 HBasicBlock* dest);
27 void UpdateControlFlowRange(Token::Value op, HValue* value, HValue* other);
28 void InferRange(HValue* value);
29 void RollBackTo(int index);
30 void AddRange(HValue* value, Range* range);
31 void AddToWorklist(HValue* value) {
32 if (in_worklist_.Contains(value->id())) return;
33 in_worklist_.Add(value->id());
34 worklist_.Add(value, zone());
35 }
36 void PropagateMinusZeroChecks(HValue* value);
37 void PoisonRanges();
38
39 ZoneList<HValue*> changed_ranges_;
40
41 BitVector in_worklist_;
42 ZoneList<HValue*> worklist_;
43
44 DISALLOW_COPY_AND_ASSIGN(HRangeAnalysisPhase);
45 };
46
47
48 } // namespace internal
49 } // namespace v8
50
51 #endif // V8_HYDROGEN_RANGE_ANALYSIS_H_
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