[llvm] 57e22f5 - [X86] Add tests showing failure to concat matching VPSHUFLW/HW ymm shuffles.

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2025-03-13T14:52:17Z
New Revision: 57e22f515e7a41719c7516a1c21fd990478354a0

URL: https://github.com/llvm/llvm-project/commit/57e22f515e7a41719c7516a1c21fd990478354a0
DIFF: https://github.com/llvm/llvm-project/commit/57e22f515e7a41719c7516a1c21fd990478354a0.diff

LOG: [X86] Add tests showing failure to concat matching VPSHUFLW/HW ymm shuffles.

Added: 
    

Modified: 
    llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll

Removed: 
    


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diff  --git a/llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll b/llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll
index 2391d508435f2..824147805d2a2 100644
--- a/llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll
+++ b/llvm/test/CodeGen/X86/vector-shuffle-512-v32.ll
@@ -264,6 +264,28 @@ define <32 x i16> @shuffle_v32i16_lshr_00_02_04_06_32_34_36_38_08_10_12_14_40_42
   ret <32 x i16> %5
 }
 
+define <32 x i16> @shuffle_v32i16_concat_00_00_00_00_04_05_06_07_08_08_08_08_12_13_14_15_16_16_16_16_20_21_22_23_24_24_24_24_28_29_30_31(<16 x i16> %a0, <16 x i16> %a1) {
+; ALL-LABEL: shuffle_v32i16_concat_00_00_00_00_04_05_06_07_08_08_08_08_12_13_14_15_16_16_16_16_20_21_22_23_24_24_24_24_28_29_30_31:
+; ALL:       ## %bb.0:
+; ALL-NEXT:    vpshuflw {{.*#+}} ymm0 = ymm0[0,0,0,0,4,5,6,7,8,8,8,8,12,13,14,15]
+; ALL-NEXT:    vpshuflw {{.*#+}} ymm1 = ymm1[0,0,0,0,4,5,6,7,8,8,8,8,12,13,14,15]
+; ALL-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
+; ALL-NEXT:    retq
+  %shuffle = shufflevector <16 x i16> %a0, <16 x i16> %a1, <32 x i32> <i32 0, i32 0, i32 0, i32 0, i32 4, i32 5, i32 6, i32 7, i32 8, i32 8, i32 8, i32 8, i32 12, i32 13, i32 14, i32 15, i32 16, i32 16, i32 16, i32 16, i32 20, i32 21, i32 22, i32 23, i32 24, i32 24, i32 24, i32 24, i32 28, i32 29, i32 30, i32 31>
+  ret <32 x i16> %shuffle
+}
+
+define <32 x i16> @shuffle_v32i16_concat_00_01_02_03_04_07_06_04_08_09_10_11_12_15_14_12_16_17_18_19_20_23_22_20_24_25_26_27_28_31_30_28(<16 x i16> %a0, <16 x i16> %a1) {
+; ALL-LABEL: shuffle_v32i16_concat_00_01_02_03_04_07_06_04_08_09_10_11_12_15_14_12_16_17_18_19_20_23_22_20_24_25_26_27_28_31_30_28:
+; ALL:       ## %bb.0:
+; ALL-NEXT:    vpshufhw {{.*#+}} ymm0 = ymm0[0,1,2,3,4,7,6,4,8,9,10,11,12,15,14,12]
+; ALL-NEXT:    vpshufhw {{.*#+}} ymm1 = ymm1[0,1,2,3,4,7,6,4,8,9,10,11,12,15,14,12]
+; ALL-NEXT:    vinserti64x4 $1, %ymm1, %zmm0, %zmm0
+; ALL-NEXT:    retq
+  %shuffle = shufflevector <16 x i16> %a0, <16 x i16> %a1, <32 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 7, i32 6, i32 4, i32 8, i32 9, i32 10, i32 11, i32 12, i32 15, i32 14, i32 12, i32 16, i32 17, i32 18, i32 19, i32 20, i32 23, i32 22, i32 20, i32 24, i32 25, i32 26, i32 27, i32 28, i32 31, i32 30, i32 28>
+  ret <32 x i16> %shuffle
+}
+
 define <32 x i16> @insert_dup_mem_v32i16_i32(ptr %ptr) {
 ; KNL-LABEL: insert_dup_mem_v32i16_i32:
 ; KNL:       ## %bb.0: