From: Dan Gohman <gohman@apple.com>
Date: Mon, 3 May 2010 18:00:24 +0000 (+0000)
Subject: Use isTrueWhenEqual and isFalseWhenEqual instead of assuming that
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=34c3e36e6317b0ed448ccd2c567d5b088275fd7d;p=oota-llvm.git

Use isTrueWhenEqual and isFalseWhenEqual instead of assuming that
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
---

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index f0cb7986bd8..30303cbbd1b 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -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) {