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Fix a copy+paste bug that Duncan spotted. For several

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cases it was still getting lucky and detecting overflow
but it was clearly incorrect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-09-11 18:53:02 +00:00
parent 4086906a0f
commit bcb37fd22f
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -4699,7 +4699,7 @@ static bool AddWithOverflow(ConstantInt *&Result, ConstantInt *In1,
/// overflowed for this type. /// overflowed for this type.
static bool SubWithOverflow(ConstantInt *&Result, ConstantInt *In1, static bool SubWithOverflow(ConstantInt *&Result, ConstantInt *In1,
ConstantInt *In2, bool IsSigned = false) { ConstantInt *In2, bool IsSigned = false) {
Result = cast<ConstantInt>(Add(In1, In2)); Result = cast<ConstantInt>(Subtract(In1, In2));
if (IsSigned) if (IsSigned)
if (In2->getValue().isNegative()) if (In2->getValue().isNegative())