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.
5 #ifndef V8_HYDROGEN_UINT32_ANALYSIS_H_
6 #define V8_HYDROGEN_UINT32_ANALYSIS_H_
8 #include "src/hydrogen.h"
14 // Discover instructions that can be marked with kUint32 flag allowing
15 // them to produce full range uint32 values.
16 class HUint32AnalysisPhase : public HPhase {
18 explicit HUint32AnalysisPhase(HGraph* graph)
19 : HPhase("H_Compute safe UInt32 operations", graph), phis_(4, zone()) { }
24 INLINE(bool IsSafeUint32Use(HValue* val, HValue* use));
25 INLINE(bool Uint32UsesAreSafe(HValue* uint32val));
26 INLINE(bool CheckPhiOperands(HPhi* phi));
27 INLINE(void UnmarkPhi(HPhi* phi, ZoneList<HPhi*>* worklist));
28 INLINE(void UnmarkUnsafePhis());
30 ZoneList<HPhi*> phis_;
34 } // namespace internal
37 #endif // V8_HYDROGEN_UINT32_ANALYSIS_H_