+
+define <32 x i8> @insert_dup_mem_v32i8_i32(i32* %ptr) {
+; AVX1-LABEL: insert_dup_mem_v32i8_i32:
+; AVX1: # BB#0:
+; AVX1-NEXT: vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT: vpshufb %xmm1, %xmm0, %xmm0
+; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
+; AVX1-NEXT: retq
+;
+; AVX2-LABEL: insert_dup_mem_v32i8_i32:
+; AVX2: # BB#0:
+; AVX2-NEXT: vmovd {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; AVX2-NEXT: vpbroadcastb %xmm0, %ymm0
+; AVX2-NEXT: retq
+ %tmp = load i32, i32* %ptr, align 4
+ %tmp1 = insertelement <4 x i32> zeroinitializer, i32 %tmp, i32 0
+ %tmp2 = bitcast <4 x i32> %tmp1 to <16 x i8>
+ %tmp3 = shufflevector <16 x i8> %tmp2, <16 x i8> undef, <32 x i32> zeroinitializer
+ ret <32 x i8> %tmp3
+}
+
+define <32 x i8> @insert_dup_mem_v32i8_sext_i8(i8* %ptr) {
+; AVX1-LABEL: insert_dup_mem_v32i8_sext_i8:
+; AVX1: # BB#0:
+; AVX1-NEXT: movsbl (%rdi), %eax
+; AVX1-NEXT: vmovd %eax, %xmm0
+; AVX1-NEXT: vpxor %xmm1, %xmm1, %xmm1
+; AVX1-NEXT: vpshufb %xmm1, %xmm0, %xmm0
+; AVX1-NEXT: vinsertf128 $1, %xmm0, %ymm0, %ymm0
+; AVX1-NEXT: retq
+;
+; AVX2-LABEL: insert_dup_mem_v32i8_sext_i8:
+; AVX2: # BB#0:
+; AVX2-NEXT: movsbl (%rdi), %eax
+; AVX2-NEXT: vmovd %eax, %xmm0
+; AVX2-NEXT: vpbroadcastb %xmm0, %ymm0
+; AVX2-NEXT: retq
+ %tmp = load i8, i8* %ptr, align 1
+ %tmp1 = sext i8 %tmp to i32
+ %tmp2 = insertelement <4 x i32> zeroinitializer, i32 %tmp1, i32 0
+ %tmp3 = bitcast <4 x i32> %tmp2 to <16 x i8>
+ %tmp4 = shufflevector <16 x i8> %tmp3, <16 x i8> undef, <32 x i32> zeroinitializer
+ ret <32 x i8> %tmp4
+}