diff options
| -rw-r--r-- | include/llvm/Target/TargetData.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/llvm/Target/TargetData.h b/include/llvm/Target/TargetData.h index 7c274cec2d..fdb21c5ea1 100644 --- a/include/llvm/Target/TargetData.h +++ b/include/llvm/Target/TargetData.h @@ -178,8 +178,12 @@ public: /// that alloca reserves for this type. For example, returns 12 or 16 for /// x86_fp80, depending on alignment. uint64_t getABITypeSize(const Type* Ty) const { - unsigned char Align = getABITypeAlignment(Ty); - return (getTypeStoreSize(Ty) + Align - 1)/Align*Align; + // The alignment of a type is always a power of two. + unsigned char AlignMinusOne = getABITypeAlignment(Ty)-1; + + // Round up to the next alignment boundary. + uint64_t RoundUp = getTypeStoreSize(Ty) + AlignMinusOne; + return RoundUp &= ~uint64_t(AlignMinusOne); } /// getABITypeSizeInBits - Return the offset in bits between successive |