From bce8680605644df6143487ec7789375608486ffa Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@intel.com>
Date: Sat, 25 Aug 2018 17:23:43 +0000
Subject: [PATCH] [X86] Make sure type is a vector before calling
 VT.getVectorNumElements() in combineLoopMAddPattern

Fixes PR38700.

llvm-svn: 340688
---
 llvm/lib/Target/X86/X86ISelLowering.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 111096b1d5c1..ed16e3289ec3 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -39076,7 +39076,7 @@ static SDValue combineLoopMAddPattern(SDNode *N, SelectionDAG &DAG,
 
   // If the vector size is less than 128, or greater than the supported RegSize,
   // do not use PMADD.
-  if (VT.getVectorNumElements() < 8)
+  if (!VT.isVector() || VT.getVectorNumElements() < 8)
     return SDValue();
 
   if (Op0.getOpcode() != ISD::MUL)