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Fix 2007-04-04-BadFoldBitcastIntoMalloc.ll

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llvm-svn: 35665
This commit is contained in:
Jeff Cohen 2007-04-04 16:58:57 +00:00
parent bf47c569c7
commit 01d4afe6da
1 changed files with 5 additions and 4 deletions
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9
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -5901,7 +5901,7 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
/// X*Scale+Offset.
///
static Value *DecomposeSimpleLinearExpr(Value *Val, unsigned &Scale,
unsigned &Offset) {
int &Offset) {
assert(Val->getType() == Type::Int32Ty && "Unexpected allocation size type!");
if (ConstantInt *CI = dyn_cast<ConstantInt>(Val)) {
Offset = CI->getZExtValue();
@ -5985,7 +5985,8 @@ Instruction *InstCombiner::PromoteCastOfAllocation(CastInst &CI,
// See if we can satisfy the modulus by pulling a scale out of the array
// size argument.
unsigned ArraySizeScale, ArrayOffset;
unsigned ArraySizeScale;
int ArrayOffset;
Value *NumElements = // See if the array size is a decomposable linear expr.
DecomposeSimpleLinearExpr(AI.getOperand(0), ArraySizeScale, ArrayOffset);
@ -6010,8 +6011,8 @@ Instruction *InstCombiner::PromoteCastOfAllocation(CastInst &CI,
}
}
if (unsigned Offset = (AllocElTySize*ArrayOffset)/CastElTySize) {
Value *Off = ConstantInt::get(Type::Int32Ty, Offset);
if (int Offset = (AllocElTySize*ArrayOffset)/CastElTySize) {
Value *Off = ConstantInt::get(Type::Int32Ty, Offset, true);
Instruction *Tmp = BinaryOperator::createAdd(Amt, Off, "tmp");
Amt = InsertNewInstBefore(Tmp, AI);
}