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Use isTrueWhenEqual and isFalseWhenEqual instead of assuming that

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SimplifyICmpOperands will simplify such cases to EQ or NE. This makes
the correcntess of the code independent on SimplifyICmpOperands doing
certain simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102927 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-05-03 18:00:24 +00:00
parent a189bae771
commit 34c3e36e63
1 changed files with 2 additions and 2 deletions
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4
lib/Analysis/ScalarEvolution.cpp
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@ -5260,10 +5260,10 @@ bool ScalarEvolution::isImpliedCond(Value *CondValue,
// canonicalized the comparison.
if (SimplifyICmpOperands(Pred, LHS, RHS))
if (LHS == RHS)
return Pred == ICmpInst::ICMP_EQ;
return CmpInst::isTrueWhenEqual(Pred);
if (SimplifyICmpOperands(FoundPred, FoundLHS, FoundRHS))
if (FoundLHS == FoundRHS)
return Pred == ICmpInst::ICMP_NE;
return CmpInst::isFalseWhenEqual(Pred);
// Check to see if we can make the LHS or RHS match.
if (LHS == FoundRHS || RHS == FoundLHS) {