From 68d9bf26c88ae8ab702e68dded98d8fddbbc83bb Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 24 Mar 2006 18:45:20 +0000
Subject: [PATCH] Only to vector shuffle for {x,x,y,y} cases when
 SCALAR_TO_VECTOR is free.

llvm-svn: 27071
---
 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index dfafb70585f2..6acadc1349d8 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -3209,7 +3209,8 @@ SDOperand SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) {
     SDOperand ShuffleMask = DAG.getNode(ISD::BUILD_VECTOR, MaskVT, MaskVec);
 
     // If the target supports VECTOR_SHUFFLE and this shuffle mask, use it.
-    if (TLI.isShuffleLegal(Node->getValueType(0), ShuffleMask)) {
+    if (TLI.isShuffleLegal(Node->getValueType(0), ShuffleMask) &&
+        TLI.isOperationLegal(ISD::SCALAR_TO_VECTOR, Node->getValueType(0))) {
       std::vector<SDOperand> Ops;
       for(std::map<SDOperand,std::vector<unsigned> >::iterator I=Values.begin(),
             E = Values.end(); I != E; ++I) {