[llvm-commits] [llvm] r104290 - /llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

[Dan Gohman]

Author: djg
Date: Thu May 20 17:46:54 2010
New Revision: 104290

URL: http://llvm.org/viewvc/llvm-project?rev=104290&view=rev
Log:
DominatorTree.getNode can return null for unreachable blocks.

Modified:
    llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp?rev=104290&r1=104289&r2=104290&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp Thu May 20 17:46:54 2010
@@ -3127,7 +3127,7 @@
 
     BasicBlock *IDom;
     for (DomTreeNode *Rung = DT.getNode(IP->getParent()); ; ) {
-      assert(Rung && "Block has no DomTreeNode!");
+      if (!Rung) return IP;
       Rung = Rung->getIDom();
       if (!Rung) return IP;
       IDom = Rung->getBlock();