From d0859943ac16389fb843f1357746aade3cd07a6f Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Mon, 4 Aug 2008 23:09:15 +0000
Subject: [PATCH] Add an assert to catch invalid VECTOR_SHUFFLE mask indices.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54329 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ISelLowering.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7870cb0c164..da1bd93295e 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -3665,6 +3665,7 @@ LowerVECTOR_SHUFFLE_4wide(SDValue V1, SDValue V2,
       Locs[i] = std::make_pair(-1, -1);
     } else {
       unsigned Val = cast<ConstantSDNode>(Elt)->getValue();
+      assert(Val < 8 && "Invalid VECTOR_SHUFFLE index!");
       if (Val < 4) {
         Locs[i] = std::make_pair(0, NumLo);
         Mask1[NumLo] = Elt;
-- 
2.34.1