From d19bba69ad92311c64c8d55d69c74543933e451e Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Sat, 24 Apr 2010 01:38:36 +0000
Subject: [PATCH] Use SimplifyICmpOperands in isKnownPredicate too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102233 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Analysis/ScalarEvolution.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 0157238de1c..d62eef7a81a 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -4939,6 +4939,9 @@ bool ScalarEvolution::isKnownNonZero(const SCEV *S) {
 
 bool ScalarEvolution::isKnownPredicate(ICmpInst::Predicate Pred,
                                        const SCEV *LHS, const SCEV *RHS) {
+  // Canonicalize the inputs first.
+  (void)SimplifyICmpOperands(Pred, LHS, RHS);
+
   // If LHS or RHS is an addrec, check to see if the condition is true in
   // every iteration of the loop.
   if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(LHS))
-- 
2.34.1