From 9cdb8bdf0421c230024995f8eb4efc890e8e7f88 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Wed, 1 Feb 2012 06:51:58 +0000
Subject: [PATCH] Don't create VBROADCAST nodes if any nodes use the chain
 result from the load. Fixes PR11900.

llvm-svn: 149478
---
 llvm/lib/Target/X86/X86ISelLowering.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 90cd3d3b747b..2ce883a17007 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -4997,6 +4997,10 @@ static SDValue isVectorBroadcast(SDValue &Op, const X86Subtarget *Subtarget) {
   if (!ISD::isNormalLoad(Ld.getNode()))
     return SDValue();
 
+  // Reject loads that have uses of the chain result
+  if (Ld->hasAnyUseOfValue(1))
+    return SDValue();
+
   bool Is256 = VT.getSizeInBits() == 256;
   bool Is128 = VT.getSizeInBits() == 128;
   unsigned ScalarSize = Ld.getValueType().getSizeInBits();
-- 
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