From: Evan Cheng <evan.cheng@apple.com>
Date: Sat, 10 May 2008 00:58:41 +0000 (+0000)
Subject: If movl top bits are undef, let it be selected to movlps, etc.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=25210da75746362badd623be54944439b2e64dbf;p=oota-llvm.git

If movl top bits are undef, let it be selected to movlps, etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50928 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index e9605bb174b..b30a13c67cc 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -6326,8 +6326,7 @@ static SDOperand PerformBuildVectorCombine(SDNode *N, SelectionDAG &DAG,
     return SDOperand();
   // This must be an insertion into a zero vector.
   SDOperand HighElt = N->getOperand(1);
-  if (HighElt.getOpcode() != ISD::UNDEF &&
-      !isZeroNode(HighElt))
+  if (!isZeroNode(HighElt))
     return SDOperand();
 
   // Value must be a load.