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Make sure that we're dealing with a binary SCEVExpr when simplifying.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157704 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-05-30 18:42:43 +00:00
parent 6c823822cd
commit 127563b216
1 changed files with 2 additions and 1 deletions
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3
lib/Analysis/ScalarEvolution.cpp
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@ -5654,7 +5654,8 @@ bool ScalarEvolution::SimplifyICmpOperands(ICmpInst::Predicate &Pred,
if (!RA)
if (const SCEVAddExpr *AE = dyn_cast<SCEVAddExpr>(LHS))
if (const SCEVMulExpr *ME = dyn_cast<SCEVMulExpr>(AE->getOperand(0)))
if (ME->getOperand(0)->isAllOnesValue()) {
if (AE->getNumOperands() == 2 && ME->getNumOperands() == 2 &&
ME->getOperand(0)->isAllOnesValue()) {
RHS = AE->getOperand(1);
LHS = ME->getOperand(1);
Changed = true;