--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.target/i386/pr92658-avx2.c	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,192 @@
+/* PR target/92658 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -ftree-vectorize -mavx2" } */
+
+typedef unsigned char v32qi __attribute__((vector_size (32)));
+typedef unsigned short v16hi __attribute__((vector_size (32)));
+typedef unsigned int v8si __attribute__((vector_size (32)));
+typedef unsigned long long v4di __attribute__((vector_size (32)));
+
+void
+foo_u8_u16 (v16hi * dst, v32qi * __restrict src)
+{
+  unsigned short tem[16];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  tem[4] = (*src)[4];
+  tem[5] = (*src)[5];
+  tem[6] = (*src)[6];
+  tem[7] = (*src)[7];
+  tem[8] = (*src)[8];
+  tem[9] = (*src)[9];
+  tem[10] = (*src)[10];
+  tem[11] = (*src)[11];
+  tem[12] = (*src)[12];
+  tem[13] = (*src)[13];
+  tem[14] = (*src)[14];
+  tem[15] = (*src)[15];
+  dst[0] = *(v16hi *) tem;
+}
+
+void
+bar_u8_u16 (v16hi * dst, v32qi src)
+{
+  unsigned short tem[16];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  tem[4] = src[4];
+  tem[5] = src[5];
+  tem[6] = src[6];
+  tem[7] = src[7];
+  tem[8] = src[8];
+  tem[9] = src[9];
+  tem[10] = src[10];
+  tem[11] = src[11];
+  tem[12] = src[12];
+  tem[13] = src[13];
+  tem[14] = src[14];
+  tem[15] = src[15];
+  dst[0] = *(v16hi *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxbw" 2 } } */
+
+void
+foo_u8_u32 (v8si * dst, v32qi * __restrict src)
+{
+  unsigned int tem[8];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  tem[4] = (*src)[4];
+  tem[5] = (*src)[5];
+  tem[6] = (*src)[6];
+  tem[7] = (*src)[7];
+  dst[0] = *(v8si *) tem;
+}
+
+void
+bar_u8_u32 (v8si * dst, v32qi src)
+{
+  unsigned int tem[8];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  tem[4] = src[4];
+  tem[5] = src[5];
+  tem[6] = src[6];
+  tem[7] = src[7];
+  dst[0] = *(v8si *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxbd" 2 } } */
+
+void
+foo_u8_u64 (v4di * dst, v32qi * __restrict src)
+{
+  unsigned long long tem[4];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  dst[0] = *(v4di *) tem;
+}
+
+void
+bar_u8_u64 (v4di * dst, v32qi src)
+{
+  unsigned long long tem[4];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  dst[0] = *(v4di *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxbq" 2 { xfail *-*-* } } } */
+
+void
+foo_u16_u32 (v8si * dst, v16hi * __restrict src)
+{
+  unsigned int tem[8];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  tem[4] = (*src)[4];
+  tem[5] = (*src)[5];
+  tem[6] = (*src)[6];
+  tem[7] = (*src)[7];
+  dst[0] = *(v8si *) tem;
+}
+
+void
+bar_u16_u32 (v8si * dst, v16hi src)
+{
+  unsigned int tem[8];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  tem[4] = src[4];
+  tem[5] = src[5];
+  tem[6] = src[6];
+  tem[7] = src[7];
+  dst[0] = *(v8si *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxwd" 2 } } */
+
+void
+foo_u16_u64 (v4di * dst, v16hi * __restrict src)
+{
+  unsigned long long tem[4];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  dst[0] = *(v4di *) tem;
+}
+
+void
+bar_u16_u64 (v4di * dst, v16hi src)
+{
+  unsigned long long tem[4];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  dst[0] = *(v4di *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxwq" 2 } } */
+
+void
+foo_u32_u64 (v4di * dst, v8si * __restrict src)
+{
+  unsigned long long tem[4];
+  tem[0] = (*src)[0];
+  tem[1] = (*src)[1];
+  tem[2] = (*src)[2];
+  tem[3] = (*src)[3];
+  dst[0] = *(v4di *) tem;
+}
+
+void
+bar_u32_u64 (v4di * dst, v8si src)
+{
+  unsigned long long tem[4];
+  tem[0] = src[0];
+  tem[1] = src[1];
+  tem[2] = src[2];
+  tem[3] = src[3];
+  dst[0] = *(v4di *) tem;
+}
+
+/* { dg-final { scan-assembler-times "pmovzxdq" 2 } } */