commit 0cbe91ba3bd84a5ef68a1d0de5df6e955690b0a4
author Dan Gohman <gohman@apple.com> Wed Mar 02 01:34:10 2011 +0000
committer Dan Gohman <gohman@apple.com> Wed Mar 02 01:34:10 2011 +0000
tree 70b49aa1042c0fade036961d38957c37e3e26e66
parent f06e6c2ba717429936908254d53fa579bc941388

Don't re-use existing addrec expansions if they contain casts.
This fixes PR9259.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126812 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/ScalarEvolutionExpander.cpp

diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index b7c110f..f2d23c4 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -858,7 +858,8 @@
         // loop already visited by LSR for example, but it wouldn't have
         // to be.
         do {
-          if (IncV->getNumOperands() == 0 || isa<PHINode>(IncV)) {
+          if (IncV->getNumOperands() == 0 || isa<PHINode>(IncV) ||
+              isa<CastInst>(IncV)) {
             IncV = 0;
             break;
           }