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-rw-r--r--llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll18
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll b/llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll
index 306c85bd478..cde96dbb30f 100644
--- a/llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll
+++ b/llvm/test/CodeGen/X86/vector-shuffle-256-v4.ll
@@ -363,3 +363,21 @@ define <4 x i64> @shuffle_v4i64_4015(<4 x i64> %a, <4 x i64> %b) {
%shuffle = shufflevector <4 x i64> %a, <4 x i64> %b, <4 x i32> <i32 4, i32 0, i32 1, i32 5>
ret <4 x i64> %shuffle
}
+
+define <4 x i64> @stress_test1(<4 x i64> %a, <4 x i64> %b) {
+; AVX1-LABEL: @stress_test1
+; AVX1: # BB#0:
+; AVX1-NEXT: vextractf128 $1, %ymm1, %xmm0
+; AVX1-NEXT: vpunpckhqdq {{.*}} # xmm0 = xmm0[1,1]
+; AVX1-NEXT: vpshufd {{.*}} # xmm0 = xmm0[2,3,0,1]
+; AVX1-NEXT: vshufpd {{.*}} # xmm0 = xmm0[0],xmm1[1]
+; AVX1-NEXT: vpshufd {{.*}} # xmm1 = xmm1[2,3,0,1]
+; AVX1-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; AVX1-NEXT: retq
+ %c = shufflevector <4 x i64> %b, <4 x i64> undef, <4 x i32> <i32 3, i32 1, i32 1, i32 0>
+ %d = shufflevector <4 x i64> %c, <4 x i64> undef, <4 x i32> <i32 3, i32 undef, i32 2, i32 undef>
+ %e = shufflevector <4 x i64> %b, <4 x i64> undef, <4 x i32> <i32 3, i32 3, i32 1, i32 undef>
+ %f = shufflevector <4 x i64> %d, <4 x i64> %e, <4 x i32> <i32 5, i32 1, i32 1, i32 0>
+
+ ret <4 x i64> %f
+}
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