[X86] Add test coverage for llvm#113396

Author: RKSimon

llvm/test/CodeGen/X86/vector-shuffle-512-v64.ll

@@ -1449,6 +1449,41 @@ define <64 x i8> @shuffle_v64i8_shift_00_02_04_06_08_10_12_14_64_66_68_70_72_74_
   ret <64 x i8> %5
 }
 
+; PR113396
+define <64 x i8> @shuffle_v8i8_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01(<8 x i8> %0) {
+; AVX512F-LABEL: shuffle_v8i8_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01:
+; AVX512F:       # %bb.0:
+; AVX512F-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX512F-NEXT:    vpsrld $16, %xmm0, %xmm0
+; AVX512F-NEXT:    vpbroadcastw %xmm0, %ymm0
+; AVX512F-NEXT:    vinserti64x4 $1, %ymm0, %zmm0, %zmm0
+; AVX512F-NEXT:    retq
+;
+; AVX512BW-LABEL: shuffle_v8i8_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01:
+; AVX512BW:       # %bb.0:
+; AVX512BW-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX512BW-NEXT:    vpsrld $16, %xmm0, %xmm0
+; AVX512BW-NEXT:    vpbroadcastw %xmm0, %zmm0
+; AVX512BW-NEXT:    retq
+;
+; AVX512DQ-LABEL: shuffle_v8i8_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01:
+; AVX512DQ:       # %bb.0:
+; AVX512DQ-NEXT:    vpunpcklbw {{.*#+}} xmm0 = xmm0[0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7]
+; AVX512DQ-NEXT:    vpsrld $16, %xmm0, %xmm0
+; AVX512DQ-NEXT:    vpbroadcastw %xmm0, %ymm0
+; AVX512DQ-NEXT:    vinserti64x4 $1, %ymm0, %zmm0, %zmm0
+; AVX512DQ-NEXT:    retq
+;
+; AVX512VBMI-LABEL: shuffle_v8i8_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01_01:
+; AVX512VBMI:       # %bb.0:
+; AVX512VBMI-NEXT:    # kill: def $xmm0 killed $xmm0 def $zmm0
+; AVX512VBMI-NEXT:    vpbroadcastb {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
+; AVX512VBMI-NEXT:    vpermb %zmm0, %zmm1, %zmm0
+; AVX512VBMI-NEXT:    retq
+  %s = shufflevector <8 x i8> %0, <8 x i8> poison, <64 x i32> <i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1>
+  ret <64 x i8> %s
+}
+
 ; PR114001
 define <64 x i8> @shuffle_v8i8_00_00_00_00_00_00_00_00_01_01_01_01_01_01_01_01_02_02_02_02_02_02_02_02_03_03_03_03_03_03_03_03_04_04_04_04_04_04_04_04_05_05_05_05_05_05_05_05_06_06_06_06_06_06_06_06_07_07_07_07_07_07_07_07(<8 x i8> %a0) {
 ; AVX512F-LABEL: shuffle_v8i8_00_00_00_00_00_00_00_00_01_01_01_01_01_01_01_01_02_02_02_02_02_02_02_02_03_03_03_03_03_03_03_03_04_04_04_04_04_04_04_04_05_05_05_05_05_05_05_05_06_06_06_06_06_06_06_06_07_07_07_07_07_07_07_07: