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c1f75dc3 | 1 | /* Measure memcpy functions. |
bfff8b1b | 2 | Copyright (C) 2013-2017 Free Software Foundation, Inc. |
c1f75dc3 SP |
3 | This file is part of the GNU C Library. |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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/>. */ | |
18 | ||
19 | #ifndef MEMCPY_RESULT | |
20 | # define MEMCPY_RESULT(dst, len) dst | |
21 | # define MIN_PAGE_SIZE 131072 | |
22 | # define TEST_MAIN | |
23 | # define TEST_NAME "memcpy" | |
24 | # include "bench-string.h" | |
25 | ||
26 | char *simple_memcpy (char *, const char *, size_t); | |
27 | char *builtin_memcpy (char *, const char *, size_t); | |
28 | ||
29 | IMPL (simple_memcpy, 0) | |
30 | IMPL (builtin_memcpy, 0) | |
31 | IMPL (memcpy, 1) | |
32 | ||
33 | char * | |
34 | simple_memcpy (char *dst, const char *src, size_t n) | |
35 | { | |
36 | char *ret = dst; | |
37 | while (n--) | |
38 | *dst++ = *src++; | |
39 | return ret; | |
40 | } | |
41 | ||
42 | char * | |
43 | builtin_memcpy (char *dst, const char *src, size_t n) | |
44 | { | |
45 | return __builtin_memcpy (dst, src, n); | |
46 | } | |
47 | #endif | |
48 | ||
5ee1e3ce SP |
49 | # include "json-lib.h" |
50 | ||
c1f75dc3 SP |
51 | typedef char *(*proto_t) (char *, const char *, size_t); |
52 | ||
53 | static void | |
5ee1e3ce | 54 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, const char *src, |
c1f75dc3 SP |
55 | size_t len) |
56 | { | |
44558701 WN |
57 | size_t i, iters = INNER_LOOP_ITERS; |
58 | timing_t start, stop, cur; | |
59 | ||
44558701 WN |
60 | TIMING_NOW (start); |
61 | for (i = 0; i < iters; ++i) | |
c1f75dc3 | 62 | { |
44558701 | 63 | CALL (impl, dst, src, len); |
c1f75dc3 | 64 | } |
44558701 WN |
65 | TIMING_NOW (stop); |
66 | ||
67 | TIMING_DIFF (cur, start, stop); | |
68 | ||
5ee1e3ce | 69 | json_element_double (json_ctx, (double) cur / (double) iters); |
c1f75dc3 SP |
70 | } |
71 | ||
72 | static void | |
5ee1e3ce | 73 | do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len) |
c1f75dc3 SP |
74 | { |
75 | size_t i, j; | |
76 | char *s1, *s2; | |
77 | ||
78 | align1 &= 63; | |
79 | if (align1 + len >= page_size) | |
80 | return; | |
81 | ||
82 | align2 &= 63; | |
83 | if (align2 + len >= page_size) | |
84 | return; | |
85 | ||
86 | s1 = (char *) (buf1 + align1); | |
87 | s2 = (char *) (buf2 + align2); | |
88 | ||
89 | for (i = 0, j = 1; i < len; i++, j += 23) | |
90 | s1[i] = j; | |
91 | ||
5ee1e3ce SP |
92 | json_element_object_begin (json_ctx); |
93 | json_attr_uint (json_ctx, "length", (double) len); | |
94 | json_attr_uint (json_ctx, "align1", (double) align1); | |
95 | json_attr_uint (json_ctx, "align2", (double) align2); | |
96 | json_array_begin (json_ctx, "timings"); | |
c1f75dc3 SP |
97 | |
98 | FOR_EACH_IMPL (impl, 0) | |
5ee1e3ce | 99 | do_one_test (json_ctx, impl, s2, s1, len); |
c1f75dc3 | 100 | |
5ee1e3ce SP |
101 | json_array_end (json_ctx); |
102 | json_element_object_end (json_ctx); | |
c1f75dc3 SP |
103 | } |
104 | ||
105 | int | |
106 | test_main (void) | |
107 | { | |
5ee1e3ce | 108 | json_ctx_t json_ctx; |
c1f75dc3 SP |
109 | size_t i; |
110 | ||
111 | test_init (); | |
112 | ||
5ee1e3ce SP |
113 | json_init (&json_ctx, 0, stdout); |
114 | ||
115 | json_document_begin (&json_ctx); | |
116 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
117 | ||
118 | json_attr_object_begin (&json_ctx, "functions"); | |
7ee38e60 | 119 | json_attr_object_begin (&json_ctx, TEST_NAME); |
5ee1e3ce SP |
120 | json_attr_string (&json_ctx, "bench-variant", "default"); |
121 | ||
122 | json_array_begin (&json_ctx, "ifuncs"); | |
c1f75dc3 | 123 | FOR_EACH_IMPL (impl, 0) |
5ee1e3ce SP |
124 | json_element_string (&json_ctx, impl->name); |
125 | json_array_end (&json_ctx); | |
c1f75dc3 | 126 | |
5ee1e3ce | 127 | json_array_begin (&json_ctx, "results"); |
c1f75dc3 SP |
128 | for (i = 0; i < 18; ++i) |
129 | { | |
5ee1e3ce SP |
130 | do_test (&json_ctx, 0, 0, 1 << i); |
131 | do_test (&json_ctx, i, 0, 1 << i); | |
132 | do_test (&json_ctx, 0, i, 1 << i); | |
133 | do_test (&json_ctx, i, i, 1 << i); | |
c1f75dc3 SP |
134 | } |
135 | ||
136 | for (i = 0; i < 32; ++i) | |
137 | { | |
5ee1e3ce SP |
138 | do_test (&json_ctx, 0, 0, i); |
139 | do_test (&json_ctx, i, 0, i); | |
140 | do_test (&json_ctx, 0, i, i); | |
141 | do_test (&json_ctx, i, i, i); | |
c1f75dc3 SP |
142 | } |
143 | ||
144 | for (i = 3; i < 32; ++i) | |
145 | { | |
146 | if ((i & (i - 1)) == 0) | |
147 | continue; | |
5ee1e3ce SP |
148 | do_test (&json_ctx, 0, 0, 16 * i); |
149 | do_test (&json_ctx, i, 0, 16 * i); | |
150 | do_test (&json_ctx, 0, i, 16 * i); | |
151 | do_test (&json_ctx, i, i, 16 * i); | |
c1f75dc3 SP |
152 | } |
153 | ||
32b28d24 L |
154 | for (i = 32; i < 64; ++i) |
155 | { | |
5ee1e3ce SP |
156 | do_test (&json_ctx, 0, 0, 32 * i); |
157 | do_test (&json_ctx, i, 0, 32 * i); | |
158 | do_test (&json_ctx, 0, i, 32 * i); | |
159 | do_test (&json_ctx, i, i, 32 * i); | |
32b28d24 L |
160 | } |
161 | ||
5ee1e3ce SP |
162 | do_test (&json_ctx, 0, 0, getpagesize ()); |
163 | ||
164 | json_array_end (&json_ctx); | |
165 | json_attr_object_end (&json_ctx); | |
166 | json_attr_object_end (&json_ctx); | |
167 | json_document_end (&json_ctx); | |
c1f75dc3 SP |
168 | |
169 | return ret; | |
170 | } | |
171 | ||
b598e134 | 172 | #include <support/test-driver.c> |