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-rw-r--r--lib/Target/X86/X86ISelLowering.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7870cb0c16..da1bd93295 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;