From b1bdd7d8186c738b7463756867be79a1f664b1d3 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Thu, 30 Aug 2012 06:56:15 +0000
Subject: Only perform DAG combine on FMAs of legal types.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162892 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ISelLowering.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 8b7a4d0a08d..b2b30fe387c 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -15601,6 +15601,10 @@ static SDValue PerformFMACombine(SDNode *N, SelectionDAG &DAG,
   DebugLoc dl = N->getDebugLoc();
   EVT VT = N->getValueType(0);
 
+  // Let legalize expand this if it isn't a legal type yet.
+  if (!DAG.getTargetLoweringInfo().isTypeLegal(VT))
+    return SDValue();
+
   EVT ScalarVT = VT.getScalarType();
   if ((ScalarVT != MVT::f32 && ScalarVT != MVT::f64) || !Subtarget->hasFMA())
     return SDValue();
-- 
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