From: Chris Lattner <sabre@nondot.org>
Date: Tue, 11 Jan 2011 18:14:50 +0000 (+0000)
Subject: this pass claims to preserve scev, make sure to tell it about deletions.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f73b99ab43c36b026a03430a30c329a343cdd77b;p=oota-llvm.git

this pass claims to preserve scev, make sure to tell it about deletions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123247 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp
index 5ec0f1040e8..efb4d3661b1 100644
--- a/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/lib/Transforms/Utils/LoopSimplify.cpp
@@ -268,6 +268,7 @@ ReprocessLoop:
        (PN = dyn_cast<PHINode>(I++)); )
     if (Value *V = SimplifyInstruction(PN, 0, DT)) {
       if (AA) AA->deleteValue(PN);
+      if (SE) SE->forgetValue(PN);
       PN->replaceAllUsesWith(V);
       PN->eraseFromParent();
     }