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Force sign-extension for uint array indexes from 32-bit to 64-bits
since uint is not normally sign-extended when casting to uint64_t. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3489 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -164,8 +164,13 @@ uint64_t TargetData::getIndexedOffset(const Type *ptrTy,
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// Get the array index and the size of each array element.
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// Both must be known constants, or this will fail.
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unsigned arrayIdx = cast<ConstantUInt>(Idx[CurIDX])->getValue();
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// Also, the arrayIdx needs to be sign-extended from uint
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// to the machine register size if the reg. size > sizeof(uint).
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uint64_t elementSize = this->getTypeSize(Ty);
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uint64_t arrayIdx = cast<ConstantUInt>(Idx[CurIDX])->getValue();
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if (getIntegerRegize() > sizeof(uint)) {
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arrayIdx = (uint64_t) (int) arrayIdx; // sign-extend from 32 to 64 bits
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}
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Result += arrayIdx * elementSize;
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} else if (const StructType *STy = dyn_cast<const StructType>(Ty)) {
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