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, 190 insertions, 0 deletions

diff --git a/benchtests/bench-strrchr.c b/benchtests/bench-strrchr.c
new file mode 100644
index 0000000000..400ac80e2c
--- /dev/null
+++ b/benchtests/bench-strrchr.c
@@ -0,0 +1,190 @@
+/* Measure STRCHR 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
+#ifdef WIDE
+# define TEST_NAME "wcsrchr"
+#else
+# define TEST_NAME "strrchr"
+#endif
+#include "bench-string.h"
+
+#ifdef WIDE
+# include <wchar.h>
+# define SIMPLE_STRRCHR simple_wcsrchr
+# define STRRCHR wcsrchr
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define BIG_CHAR WCHAR_MAX
+# define SMALL_CHAR 1273
+#else
+# define SIMPLE_STRRCHR simple_strrchr
+# define STRRCHR strrchr
+# define CHAR char
+# define UCHAR unsigned char
+# define BIG_CHAR CHAR_MAX
+# define SMALL_CHAR 127
+#endif
+
+typedef CHAR *(*proto_t) (const CHAR *, int);
+CHAR *SIMPLE_STRRCHR (const CHAR *, int);
+
+IMPL (SIMPLE_STRRCHR, 0)
+IMPL (STRRCHR, 1)
+
+CHAR *
+SIMPLE_STRRCHR (const CHAR *s, int c)
+{
+  const CHAR *ret = NULL;
+
+  for (; *s != '\0'; ++s)
+    if (*s == (CHAR) c)
+      ret = s;
+
+  return (CHAR *) (c == '\0' ? s : ret);
+}
+
+static void
+do_one_test (impl_t *impl, const CHAR *s, int c, CHAR *exp_res)
+{
+  CHAR *res = CALL (impl, s, c);
+  if (res != exp_res)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, 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, c);
+	  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, int seek_char, int max_char)
+/* For wcsrchr: align here means align not in bytes,
+   but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
+   len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
+{
+  size_t i;
+  CHAR *result;
+  CHAR *buf = (CHAR *) buf1;
+
+  align &= 7;
+  if ( (align + len) * sizeof(CHAR) >= page_size)
+    return;
+
+  for (i = 0; i < len; ++i)
+    {
+      buf[align + i] = (random () * random ()) & max_char;
+      if (!buf[align + i])
+	buf[align + i] = (random () * random ()) & max_char;
+      if (!buf[align + i])
+	buf[align + i] = 1;
+      if ((i > pos || pos >= len) && buf[align + i] == seek_char)
+	buf[align + i] = seek_char + 10 + (random () & 15);
+    }
+  buf[align + len] = 0;
+
+  if (pos < len)
+    {
+      buf[align + pos] = seek_char;
+      result = (CHAR *) (buf + align + pos);
+    }
+  else if (seek_char == 0)
+    result = (CHAR *) (buf + align + len);
+  else
+    result = NULL;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment in bytes %2zd:", pos, align * sizeof(CHAR));
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, (CHAR *) (buf + align), seek_char, result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%20s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 23, SMALL_CHAR);
+      do_test (i, 16 << i, 2048, 23, SMALL_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, 23, SMALL_CHAR);
+      do_test (i, 64, 256, 23, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 23, SMALL_CHAR);
+      do_test (0, i, i + 1, 23, BIG_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (0, 16 << i, 2048, 0, SMALL_CHAR);
+      do_test (i, 16 << i, 2048, 0, SMALL_CHAR);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 64, 256, 0, SMALL_CHAR);
+      do_test (i, 64, 256, 0, BIG_CHAR);
+    }
+
+  for (i = 0; i < 32; ++i)
+    {
+      do_test (0, i, i + 1, 0, SMALL_CHAR);
+      do_test (0, i, i + 1, 0, BIG_CHAR);
+    }
+
+  return ret;
+}
+
+#include "../test-skeleton.c"