From 4df6499f1056b03beea46c8660e1908373a4cbde Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sat, 3 Feb 2018 21:34:42 +0000
Subject: [PATCH] [SelectionDAG] Don't use simple VT in generic shuffle code

Better to assume that any value type may be commuted, not just MVTs.

No test case right now, but discovered while investigating possible shuffle combines.

llvm-svn: 324179
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 4e5eab49c33f..aaf962a18ff4 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1644,7 +1644,7 @@ SDValue SelectionDAG::getVectorShuffle(EVT VT, const SDLoc &dl, SDValue N1,
 }
 
 SDValue SelectionDAG::getCommutedVectorShuffle(const ShuffleVectorSDNode &SV) {
-  MVT VT = SV.getSimpleValueType(0);
+  EVT VT = SV.getValueType(0);
   SmallVector<int, 8> MaskVec(SV.getMask().begin(), SV.getMask().end());
   ShuffleVectorSDNode::commuteMask(MaskVec);