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fix a regression on vector or instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35314 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-03-24 23:56:43 +00:00
parent 758d1bc919
commit 42593e69e2
1 changed files with 9 additions and 9 deletions
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18
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -3636,9 +3636,8 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
bool Changed = SimplifyCommutative(I);
Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1);
if (isa<UndefValue>(Op1))
return ReplaceInstUsesWith(I, // X | undef -> -1
ConstantInt::getAllOnesValue(I.getType()));
if (isa<UndefValue>(Op1)) // X | undef -> -1
return ReplaceInstUsesWith(I, ConstantInt::getAllOnesValue(I.getType()));
// or X, X = X
if (Op0 == Op1)
@ -3646,12 +3645,13 @@ Instruction *InstCombiner::visitOr(BinaryOperator &I) {
// See if we can simplify any instructions used by the instruction whose sole
// purpose is to compute bits we don't care about.
uint32_t BitWidth = cast<IntegerType>(I.getType())->getBitWidth();
APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
if (!isa<VectorType>(I.getType()) &&
SimplifyDemandedBits(&I, APInt::getAllOnesValue(BitWidth),
KnownZero, KnownOne))
return &I;
if (!isa<VectorType>(I.getType())) {
uint32_t BitWidth = cast<IntegerType>(I.getType())->getBitWidth();
APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
if (SimplifyDemandedBits(&I, APInt::getAllOnesValue(BitWidth),
KnownZero, KnownOne))
return &I;
}
// or X, -1 == -1
if (ConstantInt *RHS = dyn_cast<ConstantInt>(Op1)) {