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Fix an infinite loop building the CFE

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llvm-svn: 30465
This commit is contained in:
Chris Lattner 2006-09-18 18:27:05 +00:00
parent 6392e78191
commit 1efde528d6
1 changed files with 2 additions and 1 deletions
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3
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -3988,7 +3988,8 @@ Instruction *InstCombiner::visitSetCondInst(SetCondInst &I) {
// preferable because it allows the C<<Y expression to be hoisted out
// of a loop if Y is invariant and X is not.
if (Shift && Shift->hasOneUse() && CI->isNullValue() &&
I.isEquality() && !Shift->isArithmeticShift()) {
I.isEquality() && !Shift->isArithmeticShift() &&
isa<Instruction>(Shift->getOperand(0))) {
// Compute C << Y.
Value *NS;
if (Shift->getOpcode() == Instruction::Shr) {