obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 98 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/ssse3-phsubsw.c b/gcc/testsuite/gcc.target/i386/ssse3-phsubsw.c
new file mode 100644
index 000000000..371c8d112
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/ssse3-phsubsw.c
@@ -0,0 +1,98 @@
+/* { dg-do run } */
+/* { dg-require-effective-target ssse3 } */
+/* { dg-options "-O2 -fno-strict-aliasing -mssse3" } */
+
+#ifndef CHECK_H
+#define CHECK_H "ssse3-check.h"
+#endif
+
+#ifndef TEST
+#define TEST ssse3_test
+#endif
+
+#include CHECK_H
+
+#include "ssse3-vals.h"
+
+#include <tmmintrin.h>
+
+#ifndef __AVX__
+/* Test the 64-bit form */
+static void
+ssse3_test_phsubsw (int *i1, int *i2, int *r)
+{
+  __m64 t1 = *(__m64 *) i1;
+  __m64 t2 = *(__m64 *) i2;
+
+  *(__m64 *) r = _mm_hsubs_pi16 (t1, t2);
+
+  _mm_empty ();
+}
+#endif
+
+/* Test the 128-bit form */
+static void
+ssse3_test_phsubsw128 (int *i1, int *i2, int *r)
+{
+  /* Assumes incoming pointers are 16-byte aligned */
+  __m128i t1 = *(__m128i *) i1;
+  __m128i t2 = *(__m128i *) i2;
+  *(__m128i *) r = _mm_hsubs_epi16 (t1, t2);
+}
+
+static short
+signed_saturate_to_word (int x)
+{
+  if (x > (int )0x7fff)
+    return 0x7fff;
+
+  if (x < (int) 0xffff8000)
+    return 0x8000;
+
+  return (short)x;
+}
+
+/* Routine to manually compute the results */
+static void
+compute_correct_result (int *i1, int *i2, int *r)
+{
+  short *s1 = (short *) i1;
+  short *s2 = (short *) i2;
+  short *sout = (short *) r;
+  int i;
+
+  for (i = 0; i < 4; i++)
+    sout[i] = signed_saturate_to_word (s1[2 * i] - s1[2 * i + 1]);
+
+  for (i = 0; i < 4; i++)
+    sout[i + 4] = signed_saturate_to_word (s2[2 * i] - s2[2 * i + 1]);
+}
+
+static void
+TEST (void)
+{
+  int i;
+  int r [4] __attribute__ ((aligned(16)));
+  int ck [4];
+  int fail = 0;
+
+  for (i = 0; i < 256; i += 8)
+    {
+      /* Manually compute the result */
+      compute_correct_result (&vals[i + 0], &vals[i + 4], ck);
+
+#ifndef __AVX__
+      /* Run the 64-bit tests */
+      ssse3_test_phsubsw (&vals[i + 0], &vals[i + 2], &r[0]);
+      ssse3_test_phsubsw (&vals[i + 4], &vals[i + 6], &r[2]);
+      fail += chk_128 (ck, r);
+#endif
+
+      /* Run the 128-bit tests */
+      ssse3_test_phsubsw128 (&vals[i + 0], &vals[i + 4], r);
+      fail += chk_128 (ck, r);
+    }
+
+  if (fail != 0)
+    abort ();
+}