From 410317e973f34ecd0ec36e2d8ba260d392a3ece8 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Tue, 25 Apr 2017 18:00:04 +0000
Subject: [PATCH] [X86][AVX2] Add shuffle test for PR27320 showing current
 codegen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301342 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../X86/vector-shuffle-combining-avx2.ll      | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/test/CodeGen/X86/vector-shuffle-combining-avx2.ll b/test/CodeGen/X86/vector-shuffle-combining-avx2.ll
index 1385929ab8c..202acbcd350 100644
--- a/test/CodeGen/X86/vector-shuffle-combining-avx2.ll
+++ b/test/CodeGen/X86/vector-shuffle-combining-avx2.ll
@@ -879,3 +879,29 @@ define <32 x i8> @constant_fold_pshufb_256() {
   %1 = tail call <32 x i8> @llvm.x86.avx2.pshuf.b(<32 x i8> <i8 15, i8 14, i8 13, i8 12, i8 11, i8 10, i8 9, i8 8, i8 7, i8 6, i8 5, i8 4, i8 3, i8 2, i8 1, i8 0, i8 0, i8 -1, i8 -2, i8 -3, i8 -4, i8 -5, i8 -6, i8 -7, i8 -8, i8 -9, i8 -10, i8 -11, i8 -12, i8 -13, i8 -14, i8 -15>, <32 x i8> <i8 1, i8 -1, i8 -1, i8 -1, i8 undef, i8 undef, i8 -1, i8 -1, i8 15, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 7, i8 6, i8 1, i8 -1, i8 -1, i8 -1, i8 undef, i8 undef, i8 -1, i8 -1, i8 15, i8 -1, i8 -1, i8 -1, i8 -1, i8 -1, i8 7, i8 6>)
   ret <32 x i8> %1
 }
+
+define <32 x i8> @PR27320(<8 x i32> %a0) {
+; X32-LABEL: PR27320:
+; X32:       # BB#0:
+; X32-NEXT:    vpshufb {{.*#+}} xmm1 = xmm0[12,13,13,14,15],zero,zero,zero,zero,zero,zero,zero,zero,zero,zero,zero
+; X32-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; X32-NEXT:    vpshufb {{.*#+}} xmm2 = zero,zero,zero,zero,zero,xmm2[0,0,1,2,3,3,4,5,6,6,7]
+; X32-NEXT:    vpor %xmm1, %xmm2, %xmm1
+; X32-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,1,1,2,3,4,4,5,6,7,7,8,9,10,10,11]
+; X32-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
+; X32-NEXT:    retl
+;
+; X64-LABEL: PR27320:
+; X64:       # BB#0:
+; X64-NEXT:    vpshufb {{.*#+}} xmm1 = xmm0[12,13,13,14,15],zero,zero,zero,zero,zero,zero,zero,zero,zero,zero,zero
+; X64-NEXT:    vextracti128 $1, %ymm0, %xmm2
+; X64-NEXT:    vpshufb {{.*#+}} xmm2 = zero,zero,zero,zero,zero,xmm2[0,0,1,2,3,3,4,5,6,6,7]
+; X64-NEXT:    vpor %xmm1, %xmm2, %xmm1
+; X64-NEXT:    vpshufb {{.*#+}} xmm0 = xmm0[0,1,1,2,3,4,4,5,6,7,7,8,9,10,10,11]
+; X64-NEXT:    vinserti128 $1, %xmm1, %ymm0, %ymm0
+; X64-NEXT:    retq
+  %1 = shufflevector <8 x i32> %a0, <8 x i32> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 undef, i32 3, i32 4, i32 5, i32 undef>
+  %2 = bitcast <8 x i32> %1 to <32 x i8>
+  %3 = shufflevector <32 x i8> %2, <32 x i8> undef, <32 x i32> <i32 0, i32 1, i32 1, i32 2, i32 3, i32 4, i32 4, i32 5, i32 6, i32 7, i32 7, i32 8, i32 9, i32 10, i32 10, i32 11, i32 16, i32 17, i32 17, i32 18, i32 19, i32 20, i32 20, i32 21, i32 22, i32 23, i32 23, i32 24, i32 25, i32 26, i32 26, i32 27>
+  ret <32 x i8> %3
+}
-- 
2.40.0