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97020474 | 1 | /* Measure memset 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 | |
2e9e1667 | 20 | #ifndef WIDE |
16f87cfd | 21 | # define TEST_NAME "memset" |
2e9e1667 | 22 | #else |
16f87cfd | 23 | # define TEST_NAME "wmemset" |
2e9e1667 | 24 | #endif /* WIDE */ |
16f87cfd WD |
25 | #define MIN_PAGE_SIZE 131072 |
26 | #include "bench-string.h" | |
2e9e1667 | 27 | |
29c933fb SP |
28 | #include "json-lib.h" |
29 | ||
2e9e1667 | 30 | CHAR *SIMPLE_MEMSET (CHAR *, int, size_t); |
97020474 | 31 | |
2e9e1667 | 32 | typedef CHAR *(*proto_t) (CHAR *, int, size_t); |
97020474 | 33 | |
2e9e1667 | 34 | IMPL (MEMSET, 1) |
16f87cfd | 35 | IMPL (SIMPLE_MEMSET, 0) |
97020474 | 36 | |
2e9e1667 | 37 | CHAR * |
85c2e611 | 38 | inhibit_loop_to_libcall |
2e9e1667 | 39 | SIMPLE_MEMSET (CHAR *s, int c, size_t n) |
97020474 | 40 | { |
2e9e1667 | 41 | CHAR *r = s, *end = s + n; |
97020474 SP |
42 | while (r < end) |
43 | *r++ = c; | |
44 | return s; | |
45 | } | |
46 | ||
47 | static void | |
29c933fb SP |
48 | do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s, |
49 | int c __attribute ((unused)), size_t n) | |
97020474 | 50 | { |
44558701 WN |
51 | size_t i, iters = INNER_LOOP_ITERS; |
52 | timing_t start, stop, cur; | |
97020474 | 53 | |
44558701 WN |
54 | TIMING_NOW (start); |
55 | for (i = 0; i < iters; ++i) | |
97020474 | 56 | { |
44558701 | 57 | CALL (impl, s, c, n); |
44558701 WN |
58 | } |
59 | TIMING_NOW (stop); | |
97020474 | 60 | |
44558701 | 61 | TIMING_DIFF (cur, start, stop); |
97020474 | 62 | |
29c933fb | 63 | json_element_double (json_ctx, (double) cur / (double) iters); |
97020474 SP |
64 | } |
65 | ||
66 | static void | |
29c933fb | 67 | do_test (json_ctx_t *json_ctx, size_t align, int c, size_t len) |
97020474 | 68 | { |
344303f3 | 69 | align &= 63; |
2e9e1667 | 70 | if ((align + len) * sizeof (CHAR) > page_size) |
97020474 SP |
71 | return; |
72 | ||
29c933fb SP |
73 | json_element_object_begin (json_ctx); |
74 | json_attr_uint (json_ctx, "length", len); | |
75 | json_attr_uint (json_ctx, "alignment", align); | |
76 | json_attr_int (json_ctx, "char", c); | |
77 | json_array_begin (json_ctx, "timings"); | |
97020474 SP |
78 | |
79 | FOR_EACH_IMPL (impl, 0) | |
503c92c3 SP |
80 | { |
81 | do_one_test (json_ctx, impl, (CHAR *) (buf1) + align, c, len); | |
014efdd7 | 82 | alloc_bufs (); |
503c92c3 | 83 | } |
97020474 | 84 | |
29c933fb SP |
85 | json_array_end (json_ctx); |
86 | json_element_object_end (json_ctx); | |
97020474 SP |
87 | } |
88 | ||
89 | int | |
90 | test_main (void) | |
91 | { | |
29c933fb | 92 | json_ctx_t json_ctx; |
97020474 SP |
93 | size_t i; |
94 | int c = 0; | |
95 | ||
96 | test_init (); | |
97 | ||
29c933fb SP |
98 | json_init (&json_ctx, 0, stdout); |
99 | ||
100 | json_document_begin (&json_ctx); | |
101 | json_attr_string (&json_ctx, "timing_type", TIMING_TYPE); | |
102 | ||
103 | json_attr_object_begin (&json_ctx, "functions"); | |
104 | json_attr_object_begin (&json_ctx, TEST_NAME); | |
105 | json_attr_string (&json_ctx, "bench-variant", ""); | |
106 | ||
107 | json_array_begin (&json_ctx, "ifuncs"); | |
97020474 | 108 | FOR_EACH_IMPL (impl, 0) |
29c933fb SP |
109 | json_element_string (&json_ctx, impl->name); |
110 | json_array_end (&json_ctx); | |
111 | ||
112 | json_array_begin (&json_ctx, "results"); | |
97020474 | 113 | |
97020474 | 114 | for (c = -65; c <= 130; c += 65) |
97020474 SP |
115 | { |
116 | for (i = 0; i < 18; ++i) | |
29c933fb | 117 | do_test (&json_ctx, 0, c, 1 << i); |
97020474 SP |
118 | for (i = 1; i < 32; ++i) |
119 | { | |
29c933fb | 120 | do_test (&json_ctx, i, c, i); |
97020474 | 121 | if (i & (i - 1)) |
29c933fb | 122 | do_test (&json_ctx, 0, c, i); |
97020474 | 123 | } |
71ae8647 AZ |
124 | for (i = 32; i < 512; i+=32) |
125 | { | |
29c933fb SP |
126 | do_test (&json_ctx, 0, c, i); |
127 | do_test (&json_ctx, i, c, i); | |
71ae8647 | 128 | } |
29c933fb SP |
129 | do_test (&json_ctx, 1, c, 14); |
130 | do_test (&json_ctx, 3, c, 1024); | |
131 | do_test (&json_ctx, 4, c, 64); | |
132 | do_test (&json_ctx, 2, c, 25); | |
97020474 | 133 | } |
344303f3 L |
134 | for (i = 33; i <= 256; i += 4) |
135 | { | |
29c933fb SP |
136 | do_test (&json_ctx, 0, c, 32 * i); |
137 | do_test (&json_ctx, i, c, 32 * i); | |
344303f3 | 138 | } |
97020474 | 139 | |
29c933fb SP |
140 | json_array_end (&json_ctx); |
141 | json_attr_object_end (&json_ctx); | |
142 | json_attr_object_end (&json_ctx); | |
143 | json_document_end (&json_ctx); | |
144 | ||
97020474 SP |
145 | return ret; |
146 | } | |
147 | ||
b598e134 | 148 | #include <support/test-driver.c> |