lib/CodeGen/TargetInfo.cpp - Issue 22294002: Treat __sync_synchronize and asm("":::"memory") as stronger fences.

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Unified Diff: lib/CodeGen/TargetInfo.cpp

Issue 22294002: Treat __sync_synchronize and asm("":::"memory") as stronger fences. (Closed) Base URL: http://git.chromium.org/native_client/pnacl-clang.git@master

Patch Set: Use TargetInfo/getTargetHooks as suggested by eliben. Created 7 years, 4 months ago

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Index: lib/CodeGen/TargetInfo.cpp

diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp

index f9689affa0f2de7f387d0c8df61c6f140c240795..4fb888a767ba5b7ef977a5d75625d75fced38f03 100644

--- a/lib/CodeGen/TargetInfo.cpp

+++ b/lib/CodeGen/TargetInfo.cpp

@@ -437,6 +437,8 @@ class PNaClTargetCodeGenInfo : public TargetCodeGenInfo {

/// For PNaCl we don't want llvm.pow.* intrinsics to be emitted instead

/// of library function calls.

bool emitIntrinsicForPow() const { return false; }

+ bool addAsmMemoryAroundSyncSynchronize() const { return true; } // @LOCALMOD

+ bool asmMemoryIsFence() const { return true; } // @LOCALMOD

};

void PNaClABIInfo::computeInfo(CGFunctionInfo &FI) const {

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