From 5acd4a64535a05b74b37f2b8b9fc56719e02bbd4 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Thu, 20 Jan 2011 02:43:19 +0000
Subject: [PATCH] Fix bug found by new clang warning.

llvm-svn: 123872
---
 llvm/lib/CodeGen/ShrinkWrapping.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/CodeGen/ShrinkWrapping.cpp b/llvm/lib/CodeGen/ShrinkWrapping.cpp
index aeaa38b56433..7b5bca495206 100644
--- a/llvm/lib/CodeGen/ShrinkWrapping.cpp
+++ b/llvm/lib/CodeGen/ShrinkWrapping.cpp
@@ -226,7 +226,7 @@ bool PEI::calcAnticInOut(MachineBasicBlock* MBB) {
   // AnticIn[MBB] = UNION(CSRUsed[MBB], AnticOut[MBB]);
   CSRegSet prevAnticIn = AnticIn[MBB];
   AnticIn[MBB] = CSRUsed[MBB] | AnticOut[MBB];
-  if (prevAnticIn |= AnticIn[MBB])
+  if (prevAnticIn != AnticIn[MBB])
     changed = true;
   return changed;
 }
@@ -264,7 +264,7 @@ bool PEI::calcAvailInOut(MachineBasicBlock* MBB) {
   // AvailOut[MBB] = UNION(CSRUsed[MBB], AvailIn[MBB]);
   CSRegSet prevAvailOut = AvailOut[MBB];
   AvailOut[MBB] = CSRUsed[MBB] | AvailIn[MBB];
-  if (prevAvailOut |= AvailOut[MBB])
+  if (prevAvailOut != AvailOut[MBB])
     changed = true;
   return changed;
 }