From 2c5e9d71aba3b1a85f07c08d2c09d40b8547264b Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Thu, 3 May 2012 16:50:55 +0000
Subject: Vendor import of llvm release_31 branch r155985:
 http://llvm.org/svn/llvm-project/llvm/branches/release_31@155985

---
 lib/Target/X86/Utils/X86ShuffleDecode.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lib/Target/X86/Utils/X86ShuffleDecode.cpp')

diff --git a/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index 32c722a..a802333 100644
--- a/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -169,6 +169,9 @@ void DecodeUNPCKLMask(EVT VT, SmallVectorImpl<int> &ShuffleMask) {
 
 void DecodeVPERM2X128Mask(EVT VT, unsigned Imm,
                           SmallVectorImpl<int> &ShuffleMask) {
+  if (Imm & 0x88)
+    return; // Not a shuffle
+
   unsigned HalfSize = VT.getVectorNumElements()/2;
   unsigned FstHalfBegin = (Imm & 0x3) * HalfSize;
   unsigned SndHalfBegin = ((Imm >> 4) & 0x3) * HalfSize;
-- 
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