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97020474 | 1 | /* Measure memmove functions. |
04277e02 | 2 | Copyright (C) 2013-2019 Free Software Foundation, Inc. |
97020474 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 | #define TEST_MAIN | |
16f87cfd | 20 | #define TEST_NAME "memmove" |
97020474 | 21 | #include "bench-string.h" |
86c6519e | 22 | #include "json-lib.h" |
97020474 SP |
23 | |
24 | char *simple_memmove (char *, const char *, size_t); | |
25 | ||
97020474 SP |
26 | typedef char *(*proto_t) (char *, const char *, size_t); |
27 | ||
97020474 | 28 | IMPL (memmove, 1) |
16f87cfd | 29 | IMPL (simple_memmove, 0) |
97020474 SP |
30 | |
31 | char * | |
85c2e611 | 32 | inhibit_loop_to_libcall |
97020474 SP |
33 | simple_memmove (char *dst, const char *src, size_t n) |
34 | { | |
35 | char *ret = dst; | |
36 | if (src < dst) | |
37 | { | |
38 | dst += n; | |
39 | src += n; | |
40 | while (n--) | |
41 | *--dst = *--src; | |
42 | } | |
43 | else | |
44 | while (n--) | |
45 | *dst++ = *src++; | |
46 | return ret; | |
47 | } | |
48 | ||
49 | static void | |
24ca04fe SP |
50 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, char *dst, char *src, |
51 | size_t len) | |
97020474 | 52 | { |
44558701 WN |
53 | size_t i, iters = INNER_LOOP_ITERS; |
54 | timing_t start, stop, cur; | |
55 | ||
44558701 WN |
56 | TIMING_NOW (start); |
57 | for (i = 0; i < iters; ++i) | |
97020474 | 58 | { |
44558701 | 59 | CALL (impl, dst, src, len); |
97020474 | 60 | } |
44558701 WN |
61 | TIMING_NOW (stop); |
62 | ||
63 | TIMING_DIFF (cur, start, stop); | |
64 | ||
86c6519e | 65 | json_element_double (json_ctx, (double) cur / (double) iters); |
97020474 SP |
66 | } |
67 | ||
68 | static void | |
86c6519e | 69 | do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len) |
97020474 SP |
70 | { |
71 | size_t i, j; | |
72 | char *s1, *s2; | |
73 | ||
74 | align1 &= 63; | |
75 | if (align1 + len >= page_size) | |
76 | return; | |
77 | ||
78 | align2 &= 63; | |
79 | if (align2 + len >= page_size) | |
80 | return; | |
81 | ||
24ca04fe | 82 | s1 = (char *) (buf2 + align1); |
97020474 SP |
83 | s2 = (char *) (buf2 + align2); |
84 | ||
85 | for (i = 0, j = 1; i < len; i++, j += 23) | |
86 | s1[i] = j; | |
87 | ||
86c6519e SP |
88 | json_element_object_begin (json_ctx); |
89 | json_attr_uint (json_ctx, "length", (double) len); | |
90 | json_attr_uint (json_ctx, "align1", (double) align1); | |
91 | json_attr_uint (json_ctx, "align2", (double) align2); | |
92 | json_array_begin (json_ctx, "timings"); | |
97020474 SP |
93 | |
94 | FOR_EACH_IMPL (impl, 0) | |
24ca04fe | 95 | do_one_test (json_ctx, impl, s2, s1, len); |
97020474 | 96 | |
86c6519e SP |
97 | json_array_end (json_ctx); |
98 | json_element_object_end (json_ctx); | |
97020474 SP |
99 | } |
100 | ||
b598e134 | 101 | static int |
97020474 SP |
102 | test_main (void) |
103 | { | |
86c6519e | 104 | json_ctx_t json_ctx; |
97020474 SP |
105 | size_t i; |
106 | ||
107 | test_init (); | |
108 | ||
86c6519e SP |
109 | json_init (&json_ctx, 0, stdout); |
110 | ||
111 | json_document_begin (&json_ctx); | |
112 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
113 | ||
114 | json_attr_object_begin (&json_ctx, "functions"); | |
115 | json_attr_object_begin (&json_ctx, "memmove"); | |
116 | json_attr_string (&json_ctx, "bench-variant", "default"); | |
117 | ||
118 | json_array_begin (&json_ctx, "ifuncs"); | |
119 | ||
97020474 | 120 | FOR_EACH_IMPL (impl, 0) |
86c6519e SP |
121 | json_element_string (&json_ctx, impl->name); |
122 | json_array_end (&json_ctx); | |
97020474 | 123 | |
86c6519e | 124 | json_array_begin (&json_ctx, "results"); |
97020474 SP |
125 | for (i = 0; i < 14; ++i) |
126 | { | |
86c6519e SP |
127 | do_test (&json_ctx, 0, 32, 1 << i); |
128 | do_test (&json_ctx, 32, 0, 1 << i); | |
129 | do_test (&json_ctx, 0, i, 1 << i); | |
130 | do_test (&json_ctx, i, 0, 1 << i); | |
97020474 SP |
131 | } |
132 | ||
133 | for (i = 0; i < 32; ++i) | |
134 | { | |
86c6519e SP |
135 | do_test (&json_ctx, 0, 32, i); |
136 | do_test (&json_ctx, 32, 0, i); | |
137 | do_test (&json_ctx, 0, i, i); | |
138 | do_test (&json_ctx, i, 0, i); | |
97020474 SP |
139 | } |
140 | ||
141 | for (i = 3; i < 32; ++i) | |
142 | { | |
143 | if ((i & (i - 1)) == 0) | |
144 | continue; | |
86c6519e SP |
145 | do_test (&json_ctx, 0, 32, 16 * i); |
146 | do_test (&json_ctx, 32, 0, 16 * i); | |
147 | do_test (&json_ctx, 0, i, 16 * i); | |
148 | do_test (&json_ctx, i, 0, 16 * i); | |
97020474 SP |
149 | } |
150 | ||
aea44bf6 L |
151 | for (i = 32; i < 64; ++i) |
152 | { | |
86c6519e SP |
153 | do_test (&json_ctx, 0, 0, 32 * i); |
154 | do_test (&json_ctx, i, 0, 32 * i); | |
155 | do_test (&json_ctx, 0, i, 32 * i); | |
156 | do_test (&json_ctx, i, i, 32 * i); | |
aea44bf6 L |
157 | } |
158 | ||
86c6519e SP |
159 | json_array_end (&json_ctx); |
160 | json_attr_object_end (&json_ctx); | |
161 | json_attr_object_end (&json_ctx); | |
162 | json_document_end (&json_ctx); | |
163 | ||
97020474 SP |
164 | return ret; |
165 | } | |
166 | ||
b598e134 | 167 | #include <support/test-driver.c> |