src/IceTargetLoweringX8632.h - Issue 413903002: Subzero: Add a peephole to fuse cmpxchg w/ later cmp+branch.

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Unified Diff: src/IceTargetLoweringX8632.h

Issue 413903002: Subzero: Add a peephole to fuse cmpxchg w/ later cmp+branch. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master

Patch Set: blank Created 6 years, 5 months ago

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Index: src/IceTargetLoweringX8632.h

diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h

index 6f09a9084932042c57e58bdfe6fcd3c940cb6b30..daca0cdcf790e357af4e47bbaf7bc953f462bd41 100644

--- a/src/IceTargetLoweringX8632.h

+++ b/src/IceTargetLoweringX8632.h

@@ -97,8 +97,12 @@ protected:

virtual void doAddressOptLoad();

virtual void doAddressOptStore();

+ // Naive lowering of cmpxchg.

void lowerAtomicCmpxchg(Variable *DestPrev, Operand *Ptr, Operand *Expected,

Operand *Desired);

+ // Attempt a more optimized lowering of cmpxchg. Returns true if optimized.

+ bool tryOptimizedCmpxchgCmpBr(Variable *DestPrev, Operand *Ptr,

+ Operand *Expected, Operand *Desired);

void lowerAtomicRMW(Variable *Dest, uint32_t Operation, Operand *Ptr,

Operand *Val);

void lowerCountZeros(bool Cttz, Type Ty, Variable *Dest, Operand *FirstVal,

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