From: Chris Lattner <sabre@nondot.org>
Date: Fri, 25 Mar 2005 05:49:37 +0000 (+0000)
Subject: Treat free operations as volatile, since they cannot be moved.  This fixes
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2958eeabcf436aaa4e988a98621d81f45cdd4871;p=oota-llvm.git

Treat free operations as volatile, since they cannot be moved.  This fixes
Transforms/LICM/2005-03-24-LICM-Aggregate-Crash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20830 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp
index 4b36f4089c2..73baf4a1b1e 100644
--- a/lib/Analysis/AliasSetTracker.cpp
+++ b/lib/Analysis/AliasSetTracker.cpp
@@ -288,6 +288,9 @@ bool AliasSetTracker::add(FreeInst *FI) {
   bool NewPtr;
   AliasSet &AS = addPointer(FI->getOperand(0), ~0,
                             AliasSet::Mods, NewPtr);
+
+  // Free operations are volatile ops (cannot be moved).
+  AS.setVolatile();
   return NewPtr;
 }