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bugfix for reid's shift patch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33779 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-02-02 05:29:55 +00:00
parent 2d1222c060
commit 0737c24053
1 changed files with 2 additions and 2 deletions
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4
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -5454,10 +5454,10 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1,
//
unsigned TypeBits = Op0->getType()->getPrimitiveSizeInBits();
if (Op1->getZExtValue() >= TypeBits) {
if (isUnsignedShift || isLeftShift)
if (I.getOpcode() != Instruction::AShr)
return ReplaceInstUsesWith(I, Constant::getNullValue(Op0->getType()));
else {
I.setOperand(1, ConstantInt::get(Type::Int8Ty, TypeBits-1));
I.setOperand(1, ConstantInt::get(I.getType(), TypeBits-1));
return &I;
}
}