X86: Properly decode shuffle masks when the constant pool type is weird

[oota-llvm.git] / test / CodeGen / X86 / pshufb-mask-comments.ll

diff --git a/test/CodeGen/X86/pshufb-mask-comments.ll b/test/CodeGen/X86/pshufb-mask-comments.ll
index 7fc9890e8025196e41d12d8156fde768c149af6d..8f2617068ae74b40d20aa263d35b92dbaf4e0a41 100644 (file)
--- a/test/CodeGen/X86/pshufb-mask-comments.ll
+++ b/test/CodeGen/X86/pshufb-mask-comments.ll
@@ -27,4 +27,14 @@ define <16 x i8> @test3(<16 x i8> %V) {
   ret <16 x i8> %1
 }
 
+; Test that we won't crash when the constant was reused for another instruction.
+
+define <16 x i8> @test4(<2 x i64>* %V) {
+; CHECK-LABEL: test4
+; CHECK: pshufb {{.*}}# xmm0 = xmm0[8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7]
+  store <2 x i64> <i64 1084818905618843912, i64 506097522914230528>, <2 x i64>* %V, align 16
+  %1 = tail call <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8> undef, <16 x i8> <i8 8, i8 9, i8 10, i8 11, i8 12, i8 13, i8 14, i8 15, i8 0, i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7>)
+  ret <16 x i8> %1
+}
+
 declare <16 x i8> @llvm.x86.ssse3.pshuf.b.128(<16 x i8>, <16 x i8>) nounwind readnone