1 /* Measure memmove functions.
2 Copyright (C) 2013 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
21 # define TEST_NAME "bcopy"
23 # define TEST_NAME "memmove"
25 #include "bench-string.h"
27 char *simple_memmove (char *, const char *, size_t);
30 typedef void (*proto_t
) (const char *, char *, size_t);
31 void simple_bcopy (const char *, char *, size_t);
33 IMPL (simple_bcopy
, 0)
37 simple_bcopy (const char *src
, char *dst
, size_t n
)
39 simple_memmove (dst
, src
, n
);
42 typedef char *(*proto_t
) (char *, const char *, size_t);
44 IMPL (simple_memmove
, 0)
49 inhibit_loop_to_libcall
50 simple_memmove (char *dst
, const char *src
, size_t n
)
67 do_one_test (impl_t
*impl
, char *dst
, char *src
, const char *orig_src
,
70 memcpy (src
, orig_src
, len
);
72 CALL (impl
, src
, dst
, len
);
76 res
= CALL (impl
, dst
, src
, len
);
79 error (0, 0, "Wrong result in function %s %p %p", impl
->name
,
86 if (memcmp (dst
, orig_src
, len
) != 0)
88 error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
89 impl
->name
, dst
, src
);
96 hp_timing_t start
__attribute ((unused
));
97 hp_timing_t stop
__attribute ((unused
));
98 hp_timing_t best_time
= ~ (hp_timing_t
) 0;
101 for (i
= 0; i
< 32; ++i
)
103 HP_TIMING_NOW (start
);
105 CALL (impl
, src
, dst
, len
);
107 CALL (impl
, dst
, src
, len
);
109 HP_TIMING_NOW (stop
);
110 HP_TIMING_BEST (best_time
, start
, stop
);
113 printf ("\t%zd", (size_t) best_time
);
118 do_test (size_t align1
, size_t align2
, size_t len
)
124 if (align1
+ len
>= page_size
)
128 if (align2
+ len
>= page_size
)
131 s1
= (char *) (buf1
+ align1
);
132 s2
= (char *) (buf2
+ align2
);
134 for (i
= 0, j
= 1; i
< len
; i
++, j
+= 23)
138 printf ("Length %4zd, alignment %2zd/%2zd:", len
, align1
, align2
);
140 FOR_EACH_IMPL (impl
, 0)
141 do_one_test (impl
, s2
, (char *) (buf2
+ align1
), s1
, len
);
155 FOR_EACH_IMPL (impl
, 0)
156 printf ("\t%s", impl
->name
);
159 for (i
= 0; i
< 14; ++i
)
161 do_test (0, 32, 1 << i
);
162 do_test (32, 0, 1 << i
);
163 do_test (0, i
, 1 << i
);
164 do_test (i
, 0, 1 << i
);
167 for (i
= 0; i
< 32; ++i
)
175 for (i
= 3; i
< 32; ++i
)
177 if ((i
& (i
- 1)) == 0)
179 do_test (0, 32, 16 * i
);
180 do_test (32, 0, 16 * i
);
181 do_test (0, i
, 16 * i
);
182 do_test (i
, 0, 16 * i
);
188 #include "../test-skeleton.c"