[llvm] bb3d4fa - [X86] Add tests showing failure to concatenate vmovsldup or vmovshdup nodes

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-01-14T14:49:58Z
New Revision: bb3d4fa10f45c3bb8a47c1c8cd95ca9e7236d846

URL: https://github.com/llvm/llvm-project/commit/bb3d4fa10f45c3bb8a47c1c8cd95ca9e7236d846
DIFF: https://github.com/llvm/llvm-project/commit/bb3d4fa10f45c3bb8a47c1c8cd95ca9e7236d846.diff

LOG: [X86] Add tests showing failure to concatenate vmovsldup or vmovshdup nodes

Added: 
    

Modified: 
    llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll

Removed: 
    


################################################################################
diff  --git a/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll b/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll
index 2e29d1806720..4a8dd3ea8398 100644
--- a/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll
+++ b/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll
@@ -625,6 +625,19 @@ define <8 x float> @shuffle_v8f32_00224466(<8 x float> %a, <8 x float> %b) {
   ret <8 x float> %shuffle
 }
 
+define <8 x float> @shuffle_v8f32_00224466_v4f32(<4 x float> %a, <4 x float> %b) {
+; ALL-LABEL: shuffle_v8f32_00224466_v4f32:
+; ALL:       # %bb.0:
+; ALL-NEXT:    vmovsldup {{.*#+}} xmm0 = xmm0[0,0,2,2]
+; ALL-NEXT:    vmovsldup {{.*#+}} xmm1 = xmm1[0,0,2,2]
+; ALL-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; ALL-NEXT:    retq
+  %1 = shufflevector <4 x float> %a, <4 x float> %a, <4 x i32> <i32 0, i32 0, i32 2, i32 2>
+  %2 = shufflevector <4 x float> %b, <4 x float> %b, <4 x i32> <i32 0, i32 0, i32 2, i32 2>
+  %3 = shufflevector <4 x float> %1, <4 x float> %2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+  ret <8 x float> %3
+}
+
 define <8 x float> @shuffle_v8f32_10325476(<8 x float> %a, <8 x float> %b) {
 ; ALL-LABEL: shuffle_v8f32_10325476:
 ; ALL:       # %bb.0:
@@ -643,6 +656,19 @@ define <8 x float> @shuffle_v8f32_11335577(<8 x float> %a, <8 x float> %b) {
   ret <8 x float> %shuffle
 }
 
+define <8 x float> @shuffle_v8f32_11335577_v4f32(<4 x float> %a, <4 x float> %b) {
+; ALL-LABEL: shuffle_v8f32_11335577_v4f32:
+; ALL:       # %bb.0:
+; ALL-NEXT:    vmovshdup {{.*#+}} xmm0 = xmm0[1,1,3,3]
+; ALL-NEXT:    vmovshdup {{.*#+}} xmm1 = xmm1[1,1,3,3]
+; ALL-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; ALL-NEXT:    retq
+  %1 = shufflevector <4 x float> %a, <4 x float> %a, <4 x i32> <i32 1, i32 1, i32 3, i32 3>
+  %2 = shufflevector <4 x float> %b, <4 x float> %b, <4 x i32> <i32 1, i32 1, i32 3, i32 3>
+  %3 = shufflevector <4 x float> %1, <4 x float> %2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+  ret <8 x float> %3
+}
+
 define <8 x float> @shuffle_v8f32_10235467(<8 x float> %a, <8 x float> %b) {
 ; ALL-LABEL: shuffle_v8f32_10235467:
 ; ALL:       # %bb.0: