commit aa547616d2bd5f835c2ee458b544e5b67a1480d7
author Michael Zolotukhin <mzolotukhin@apple.com> Wed Jun 08 22:49:59 2016 +0000
committer Michael Zolotukhin <mzolotukhin@apple.com> Wed Jun 08 22:49:59 2016 +0000
tree 391cda6270ea35e94112ec11ae15fc083949dc83
parent e94aa7a3e1cc500623200994cd9b1872552ecb5b

[LoopUnroll] Check that DT is available before trying to verify it.

llvm-svn: 272221

llvm/lib/Transforms/Utils/LoopUnroll.cpp

diff --git a/llvm/lib/Transforms/Utils/LoopUnroll.cpp b/llvm/lib/Transforms/Utils/LoopUnroll.cpp
index baeaab1..f7e5c0c 100644
--- a/llvm/lib/Transforms/Utils/LoopUnroll.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUnroll.cpp
@@ -602,7 +602,7 @@
   // updating domtree after partial loop unrolling should also be easy.
   if (DT && !CompletelyUnroll)
     DT->recalculate(*L->getHeader()->getParent());
-  else
+  else if (DT)
     DEBUG(DT->verifyDomTree());
 
   // Simplify any new induction variables in the partially unrolled loop.