diff options
| author | Ivan A. Kosarev <ikosarev@accesssoftek.com> | 2017-10-02 11:10:04 +0000 |
|---|---|---|
| committer | Ivan A. Kosarev <ikosarev@accesssoftek.com> | 2017-10-02 11:10:04 +0000 |
| commit | 80dc32ec8be97d83ab183c40d08288f650ea1d0f (patch) | |
| tree | 33ca9d6ec214347eb12ff6f07a2296686f7aeae2 /lib/CodeGen/CGExpr.cpp | |
| parent | c6e3259e7046af28706e8c7477bc522875d15956 (diff) | |
[CodeGen] Have a special function to get TBAA info for may-alias accesses
This is part of D37826 reworked to be a separate patch to
simplify review.
Differential Revision: https://reviews.llvm.org/D38408
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@314660 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGExpr.cpp')
| -rw-r--r-- | lib/CodeGen/CGExpr.cpp | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp index b37036659c..ba970b9bde 100644 --- a/lib/CodeGen/CGExpr.cpp +++ b/lib/CodeGen/CGExpr.cpp @@ -1522,7 +1522,7 @@ llvm::Value *CodeGenFunction::EmitLoadOfScalar(Address Addr, bool Volatile, if (TBAAAccessType) { bool MayAlias = BaseInfo.getMayAlias(); llvm::MDNode *TBAA = MayAlias - ? CGM.getTBAATypeInfo(getContext().CharTy) + ? CGM.getTBAAMayAliasTypeInfo() : CGM.getTBAAStructTagInfo(TBAABaseType, TBAAAccessType, TBAAOffset); if (TBAA) CGM.DecorateInstructionWithTBAA(Load, TBAA, MayAlias); @@ -1613,7 +1613,7 @@ void CodeGenFunction::EmitStoreOfScalar(llvm::Value *Value, Address Addr, if (TBAAAccessType) { bool MayAlias = BaseInfo.getMayAlias(); llvm::MDNode *TBAA = MayAlias - ? CGM.getTBAATypeInfo(getContext().CharTy) + ? CGM.getTBAAMayAliasTypeInfo() : CGM.getTBAAStructTagInfo(TBAABaseType, TBAAAccessType, TBAAOffset); if (TBAA) CGM.DecorateInstructionWithTBAA(Store, TBAA, MayAlias); @@ -3724,11 +3724,8 @@ LValue CodeGenFunction::EmitLValueForField(LValue base, // Loading the reference will disable path-aware TBAA. TBAAPath = false; if (CGM.shouldUseTBAA()) { - llvm::MDNode *tbaa; - if (mayAlias) - tbaa = CGM.getTBAATypeInfo(getContext().CharTy); - else - tbaa = CGM.getTBAATypeInfo(type); + llvm::MDNode *tbaa = mayAlias ? CGM.getTBAAMayAliasTypeInfo() : + CGM.getTBAATypeInfo(type); if (tbaa) CGM.DecorateInstructionWithTBAA(load, tbaa); } @@ -3780,7 +3777,7 @@ LValue CodeGenFunction::EmitLValueForField(LValue base, // FIXME: this should get propagated down through anonymous structs // and unions. if (mayAlias && LV.getTBAAAccessType()) - LV.setTBAAAccessType(CGM.getTBAATypeInfo(getContext().CharTy)); + LV.setTBAAAccessType(CGM.getTBAAMayAliasTypeInfo()); return LV; } |