commit 3326ec18423716da3a768caae2691e7858913548
author Andrew Trick <atrick@apple.com> Fri Jan 06 21:23:43 2012 +0000
committer Andrew Trick <atrick@apple.com> Fri Jan 06 21:23:43 2012 +0000
tree cb0dd6815f64d3a8f91fc040baf33cd227609f93
parent b937b76045d4442165009c8e6276c7c8df9efa78

SCEVExpander: hoistStep should check strict dominance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147683 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/ScalarEvolutionExpander.cpp

diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 0a3cda9..b9c2304 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -1564,7 +1564,7 @@
   for (User::op_iterator OI = IncV->op_begin(), OE = IncV->op_end();
        OI != OE; ++OI) {
     Instruction *OInst = dyn_cast<Instruction>(OI);
-    if (OInst && !DT->dominates(OInst, InsertPos))
+    if (OInst && (OInst == InsertPos || !DT->dominates(OInst, InsertPos)))
       return false;
   }
   IncV->moveBefore(InsertPos);