From: Andrew Trick <atrick@apple.com>
Date: Mon, 26 Sep 2011 23:35:25 +0000 (+0000)
Subject: LSR, one of the new Cost::isLoser() checks did not get merged in the previous checkin.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=25b689e067697d3b49ae123120703fada030350f;p=oota-llvm.git

LSR, one of the new Cost::isLoser() checks did not get merged in the previous checkin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140583 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 1e5b56bc4e2..0ad9fc38411 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -745,9 +745,13 @@ void Cost::RateRegister(const SCEV *Reg,
 
     // Add the step value register, if it needs one.
     // TODO: The non-affine case isn't precisely modeled here.
-    if (!AR->isAffine() || !isa<SCEVConstant>(AR->getOperand(1)))
-      if (!Regs.count(AR->getOperand(1)))
+    if (!AR->isAffine() || !isa<SCEVConstant>(AR->getOperand(1))) {
+      if (!Regs.count(AR->getOperand(1))) {
         RateRegister(AR->getOperand(1), Regs, L, SE, DT);
+        if (isLoser())
+          return;
+      }
+    }
   }
   ++NumRegs;