--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.target/i386/avx2-pr94460.c	Mon May 25 07:50:57 2020 +0900
@@ -0,0 +1,31 @@
+/* PR target/94460 */
+/* { dg-do run { target { avx2 && int128 } } } */
+/* { dg-options "-O2 -mavx2" } */
+
+#include <x86intrin.h>
+#include "avx2-check.h"
+
+typedef __int128 v2ti __attribute__ ((__vector_size__ (32)));
+
+static inline v2ti
+foo (__v16hi b)
+{
+  return (v2ti) _mm256_hsub_epi16 ((__m256i) b, (__m256i) b);
+}
+
+static inline v2ti
+bar (__v8si b)
+{
+  return (v2ti) _mm256_hsub_epi32 ((__m256i) b, (__m256i) b);
+}
+
+static void
+avx2_test (void)
+{
+  v2ti x = foo ((__v16hi) { 1 });
+  if (x[0] != ((__int128)1 << 64 | 1) || x[1] != 0)
+    abort ();
+  x = bar ((__v8si) { 1 });
+  if (x[0] != ((__int128)1 << 64 | 1) || x[1] != 0)
+    abort ();
+}