From aa61fbeebbb8dad20b7e0cf27d35d850e9058e30 Mon Sep 17 00:00:00 2001
From: Cameron Zwarich <zwarich@apple.com>
Date: Fri, 25 Feb 2011 01:10:55 +0000
Subject: [PATCH] We only want to zero extend the existing information if the
 bit width is actually larger.

llvm-svn: 126464
---
 lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
index 82b6c4022d7..3cab795baeb 100644
--- a/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -269,7 +269,7 @@ FunctionLoweringInfo::GetLiveOutRegInfo(unsigned Reg, unsigned BitWidth) {
   if (!LOI->IsValid)
     return NULL;
 
-  if (BitWidth >= LOI->KnownZero.getBitWidth()) {
+  if (BitWidth > LOI->KnownZero.getBitWidth()) {
     LOI->KnownZero = LOI->KnownZero.zextOrTrunc(BitWidth);
     LOI->KnownOne = LOI->KnownOne.zextOrTrunc(BitWidth);
   }