Copy over string performance tests into benchtests

Copy over already existing string performance tests into benchtests.
Bits not related to performance measurements have been omitted.

1 files changed, 174 insertions, 0 deletions

diff --git a/benchtests/bench-strspn.c b/benchtests/bench-strspn.c
new file mode 100644
index 0000000000..7cf26f4709
--- /dev/null
+++ b/benchtests/bench-strspn.c
@@ -0,0 +1,174 @@
+/* Measure strspn functions.
+   Copyright (C) 2013 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define TEST_MAIN
+#define TEST_NAME "strspn"
+#include "bench-string.h"
+
+typedef size_t (*proto_t) (const char *, const char *);
+size_t simple_strspn (const char *, const char *);
+size_t stupid_strspn (const char *, const char *);
+
+IMPL (stupid_strspn, 0)
+IMPL (simple_strspn, 0)
+IMPL (strspn, 1)
+
+size_t
+simple_strspn (const char *s, const char *acc)
+{
+  const char *r, *str = s;
+  char c;
+
+  while ((c = *s++) != '\0')
+    {
+      for (r = acc; *r != '\0'; ++r)
+	if (*r == c)
+	  break;
+      if (*r == '\0')
+	return s - str - 1;
+    }
+  return s - str - 1;
+}
+
+size_t
+stupid_strspn (const char *s, const char *acc)
+{
+  size_t ns = strlen (s), nacc = strlen (acc);
+  size_t i, j;
+
+  for (i = 0; i < ns; ++i)
+    {
+      for (j = 0; j < nacc; ++j)
+	if (s[i] == acc[j])
+	  break;
+      if (j == nacc)
+	return i;
+    }
+  return i;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s, const char *acc, size_t exp_res)
+{
+  size_t res = CALL (impl, s, acc);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     (void *) res, (void *) exp_res);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s, acc);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align, size_t pos, size_t len)
+{
+  size_t i;
+  char *acc, *s;
+
+  align &= 7;
+  if (align + pos + 10 >= page_size || len > 240 || ! len)
+    return;
+
+  acc = (char *) (buf2 + (random () & 255));
+  s = (char *) (buf1 + align);
+
+  for (i = 0; i < len; ++i)
+    {
+      acc[i] = random () & 255;
+      if (!acc[i])
+	acc[i] = random () & 255;
+      if (!acc[i])
+	acc[i] = 1 + (random () & 127);
+    }
+  acc[len] = '\0';
+
+  for (i = 0; i < pos; ++i)
+    s[i] = acc[random () % len];
+  s[pos] = random () & 255;
+  if (strchr (acc, s[pos]))
+    s[pos] = '\0';
+  else
+    {
+      for (i = pos + 1; i < pos + 10; ++i)
+	s[i] = random () & 255;
+      s[i] = '\0';
+    }
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s, acc, pos);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%32s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, 512, i);
+      do_test (i, 512, i);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 4);
+      do_test (i, 16 << i, 4);
+    }
+
+  for (i = 1; i < 8; ++i)
+    do_test (i, 64, 10);
+
+  for (i = 0; i < 64; ++i)
+    do_test (0, i, 6);
+
+  return ret;
+}
+
+#include "../test-skeleton.c"