From: Andrew Trick <atrick@apple.com>
Date: Tue, 19 Mar 2013 04:14:57 +0000 (+0000)
Subject: Tighten up an internal LSR API that should check for NULL.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=4b02729558b5bca2208fa9649964676e7d018c4f;p=oota-llvm.git

Tighten up an internal LSR API that should check for NULL.

No test case, but should fix a scan_build warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177374 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 4e4cb864641..e4f093e1c37 100644
--- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -895,7 +895,7 @@ void Cost::RatePrimaryRegister(const SCEV *Reg,
   }
   if (Regs.insert(Reg)) {
     RateRegister(Reg, Regs, L, SE, DT);
-    if (isLoser())
+    if (LoserRegs && isLoser())
       LoserRegs->insert(Reg);
   }
 }