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| author | David Majnemer <david.majnemer@gmail.com> | 2015-02-13 07:55:47 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-02-13 07:55:47 +0000 |
| commit | abc482effcabd373f5c96fb8f9dd493968a112dd (patch) | |
| tree | 2b1eb59e9ebf337925c18d2ad7537c0d60995c27 /clang/lib/CodeGen/CodeGenFunction.h | |
| parent | 2a903b900d212dfaf5482408042a6f7b9e87c9a6 (diff) | |
| download | llvm-abc482effcabd373f5c96fb8f9dd493968a112dd.zip llvm-abc482effcabd373f5c96fb8f9dd493968a112dd.tar.gz llvm-abc482effcabd373f5c96fb8f9dd493968a112dd.tar.bz2 | |
MS ABI: Implement /volatile:ms
The /volatile:ms semantics turn volatile loads and stores into atomic
acquire and release operations. This distinction is important because
volatile memory operations do not form a happens-before relationship
with non-atomic memory. This means that a volatile store is not
sufficient for implementing a mutex unlock routine.
Differential Revision: http://reviews.llvm.org/D7580
llvm-svn: 229082
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.h')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.h b/clang/lib/CodeGen/CodeGenFunction.h index 12f066b..ea8166b 100644 --- a/clang/lib/CodeGen/CodeGenFunction.h +++ b/clang/lib/CodeGen/CodeGenFunction.h @@ -2147,11 +2147,21 @@ public: void EmitAtomicInit(Expr *E, LValue lvalue); + bool LValueIsSuitableForInlineAtomic(LValue Src); + bool typeIsSuitableForInlineAtomic(QualType Ty, bool IsVolatile) const; + + RValue EmitAtomicLoad(LValue LV, SourceLocation SL, + AggValueSlot Slot = AggValueSlot::ignored()); + RValue EmitAtomicLoad(LValue lvalue, SourceLocation loc, + llvm::AtomicOrdering AO, bool IsVolatile = false, AggValueSlot slot = AggValueSlot::ignored()); void EmitAtomicStore(RValue rvalue, LValue lvalue, bool isInit); + void EmitAtomicStore(RValue rvalue, LValue lvalue, llvm::AtomicOrdering AO, + bool IsVolatile, bool isInit); + std::pair<RValue, RValue> EmitAtomicCompareExchange( LValue Obj, RValue Expected, RValue Desired, SourceLocation Loc, llvm::AtomicOrdering Success = llvm::SequentiallyConsistent, |