From: Dan Gohman <gohman@apple.com>
Date: Wed, 9 Dec 2009 22:55:01 +0000 (+0000)
Subject: Dereference loopHeader after checking for null rather than before.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f68d0c1bbe96ccbe7f695471536862dcd047fe59;p=oota-llvm.git

Dereference loopHeader after checking for null rather than before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90990 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 38d267aa6b8..b7adfdc68e4 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -404,12 +404,13 @@ bool LoopUnswitch::IsTrivialUnswitchCondition(Value *Cond, Constant **Val,
 bool LoopUnswitch::UnswitchIfProfitable(Value *LoopCond, Constant *Val){
 
   initLoopData();
-  Function *F = loopHeader->getParent();
 
   // If LoopSimplify was unable to form a preheader, don't do any unswitching.
   if (!loopPreheader)
     return false;
 
+  Function *F = loopHeader->getParent();
+
   // If the condition is trivial, always unswitch.  There is no code growth for
   // this case.
   if (!IsTrivialUnswitchCondition(LoopCond)) {