[SimplifyIndVars] Shorten code by using SCEV helper [NFC]
llvm-svn: 316709
diff --git a/llvm/lib/Transforms/Utils/SimplifyIndVar.cpp b/llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
index 08b8492..5263e8c 100644
--- a/llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
@@ -174,14 +174,11 @@
Pred = ICmpInst::getSwappedPredicate(Pred);
}
- // Get the SCEVs for the ICmp operands.
- const SCEV *S = SE->getSCEV(ICmp->getOperand(IVOperIdx));
- const SCEV *X = SE->getSCEV(ICmp->getOperand(1 - IVOperIdx));
-
- // Simplify unnecessary loops away.
+ // Get the SCEVs for the ICmp operands (in the specific context of the
+ // current loop)
const Loop *ICmpLoop = LI->getLoopFor(ICmp->getParent());
- S = SE->getSCEVAtScope(S, ICmpLoop);
- X = SE->getSCEVAtScope(X, ICmpLoop);
+ const SCEV *S = SE->getSCEVAtScope(ICmp->getOperand(IVOperIdx), ICmpLoop);
+ const SCEV *X = SE->getSCEVAtScope(ICmp->getOperand(1 - IVOperIdx), ICmpLoop);
ICmpInst::Predicate InvariantPredicate;
const SCEV *InvariantLHS, *InvariantRHS;