1 files changed, 59 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c b/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c
new file mode 100644
index 000000000..5761d8f44
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.target/i386/avx2-vpmaddubsw-2.c
@@ -0,0 +1,59 @@
+/* { dg-do run } */
+/* { dg-options "-mavx2 -O2" } */
+/* { dg-require-effective-target avx2 } */
+
+#include "avx2-check.h"
+#include "ssse3-vals.h"
+
+static short
+signed_saturate_to_word (int x)
+{
+  if (x > (int) 0x7fff)
+    return 0x7fff;
+
+  if (x < (int) 0xffff8000)
+    return 0x8000;
+
+  return (short) x;
+}
+
+static void
+compute_pmaddubsw256 (short *i1, short *i2, short *r)
+{
+  unsigned char *ub1 = (unsigned char *) i1;
+  char *sb2 = (char *) i2;
+  short *sout = (short *) r;
+  int t0;
+  int i;
+
+  for (i = 0; i < 16; i++)
+    {
+      t0 = ((int) ub1[2 * i] * (int) sb2[2 * i] +
+	    (int) ub1[2 * i + 1] * (int) sb2[2 * i + 1]);
+      sout[i] = signed_saturate_to_word (t0);
+    }
+}
+
+static void
+avx2_test (void)
+{
+  union256i_w s1, s2, res;
+  short res_ref[16];
+  int i;
+  int fail = 0;
+
+  for (i = 0; i < 256; i += 16)
+    {
+      s1.x = _mm256_loadu_si256 ((__m256i *) & vals[i]);
+      s2.x = _mm256_loadu_si256 ((__m256i *) & vals[i + 8]);
+
+      res.x = _mm256_maddubs_epi16 (s1.x, s2.x);
+
+      compute_pmaddubsw256 (s1.a, s2.a, res_ref);
+
+      fail += check_union256i_w (res, res_ref);
+    }
+
+  if (fail != 0)
+    abort ();
+}