1 /* Measure memmove functions.
2 Copyright (C) 2013-2015 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 size_t i, iters = INNER_LOOP_ITERS;
71 timing_t start, stop, cur;
73 memcpy (src, orig_src, len);
75 CALL (impl, src, dst, len);
79 res = CALL (impl, dst, src, len);
82 error (0, 0, "Wrong result in function %s %p %p", impl->name,
89 if (memcmp (dst, orig_src, len) != 0)
91 error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
92 impl->name, dst, src);
98 for (i = 0; i < iters; ++i)
101 CALL (impl, src, dst, len);
103 CALL (impl, dst, src, len);
108 TIMING_DIFF (cur, start, stop);
110 TIMING_PRINT_MEAN ((double) cur, (double) iters);
114 do_test (size_t align1, size_t align2, size_t len)
120 if (align1 + len >= page_size)
124 if (align2 + len >= page_size)
127 s1 = (char *) (buf1 + align1);
128 s2 = (char *) (buf2 + align2);
130 for (i = 0, j = 1; i < len; i++, j += 23)
133 printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
135 FOR_EACH_IMPL (impl, 0)
136 do_one_test (impl, s2, (char *) (buf2 + align1), s1, len);
149 FOR_EACH_IMPL (impl, 0)
150 printf ("\t%s", impl->name);
153 for (i = 0; i < 14; ++i)
155 do_test (0, 32, 1 << i);
156 do_test (32, 0, 1 << i);
157 do_test (0, i, 1 << i);
158 do_test (i, 0, 1 << i);
161 for (i = 0; i < 32; ++i)
169 for (i = 3; i < 32; ++i)
171 if ((i & (i - 1)) == 0)
173 do_test (0, 32, 16 * i);
174 do_test (32, 0, 16 * i);
175 do_test (0, i, 16 * i);
176 do_test (i, 0, 16 * i);
182 #include "../test-skeleton.c"