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67e3b0c63c
In most cases the simple/stupid/builtin functions were in there to benchmark optimized implementations against. Only in some cases the functions are used to check expected results. Remove these tests from IMPL() and only keep them in wherever they're used for a specific purpose, e.g. to generate expected results. This improves timing of `make subdirs=string` by over a minute and a half (over 15%) on a Whiskey Lake laptop. Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org> Reviewed-by: Noah Goldstein <libc-alpha@sourceware.org>
337 lines
8.8 KiB
C
337 lines
8.8 KiB
C
/* Test and measure strcasecmp functions.
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Copyright (C) 1999-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <locale.h>
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#include <ctype.h>
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#include <assert.h>
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#define TEST_LEN (getpagesize () * 3)
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#define MIN_PAGE_SIZE (TEST_LEN + 2 * getpagesize ())
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#define TEST_MAIN
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#define TEST_NAME "strcasecmp"
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#include "test-string.h"
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typedef int (*proto_t) (const char *, const char *);
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IMPL (strcasecmp, 1)
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/* Naive implementation to verify results. */
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int
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simple_strcasecmp (const char *s1, const char *s2)
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{
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int ret;
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while ((ret = ((unsigned char) tolower (*s1)
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- (unsigned char) tolower (*s2))) == 0
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&& *s1++)
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++s2;
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return ret;
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}
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static void
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do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result)
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{
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int result = CALL (impl, s1, s2);
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if ((exp_result == 0 && result != 0)
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|| (exp_result < 0 && result >= 0)
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|| (exp_result > 0 && result <= 0))
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{
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error (0, 0, "Wrong result in function %s %d %d", impl->name,
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result, exp_result);
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ret = 1;
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return;
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}
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}
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static void
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do_test (size_t align1, size_t align2, size_t len, int max_char,
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int exp_result)
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{
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size_t i;
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char *s1, *s2;
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if (len == 0)
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return;
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align1 &= getpagesize () - 1;
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if (align1 + (len + 1) >= page_size)
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return;
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align2 &= getpagesize () - 1;
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if (align2 + (len + 1) >= page_size)
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return;
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s1 = (char *) (buf1 + align1);
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s2 = (char *) (buf2 + align2);
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for (i = 0; i < len; i++)
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{
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s1[i] = toupper (1 + 23 * i % max_char);
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s2[i] = tolower (s1[i]);
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}
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s1[len] = s2[len] = 0;
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s1[len + 1] = 23;
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s2[len + 1] = 24 + exp_result;
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if ((s2[len - 1] == 'z' && exp_result == -1)
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|| (s2[len - 1] == 'a' && exp_result == 1))
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s1[len - 1] += exp_result;
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else if ((s1[len - 1] == 'Z' + 1 && exp_result == 1)
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|| (s1[len - 1] == 'A' - 1 && exp_result == -1))
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s1[len - 1] = tolower (s2[len - 1]) + exp_result;
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else
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s2[len - 1] -= exp_result;
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/* For some locals this is not guranteed yet. */
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if (tolower (s1[len - 1]) - tolower (s2[len - 1]) != exp_result)
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{
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if (exp_result == -1)
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{
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s1[len - 1] = tolower ('a');
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s2[len - 1] = toupper (tolower ('a') - 1);
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}
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else if (exp_result == 0)
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s1[len - 1] = toupper (s2[len - 1]);
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else
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{
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s1[len - 1] = tolower ('a');
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s2[len - 1] = toupper (tolower ('a') + 1);
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}
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}
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s1, s2, exp_result);
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}
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static void
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do_random_tests (void)
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{
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size_t i, j, n, align1, align2, pos, len1, len2;
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int result;
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long r;
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unsigned char *p1 = buf1 + page_size - 512;
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unsigned char *p2 = buf2 + page_size - 512;
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for (n = 0; n < ITERATIONS; n++)
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{
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align1 = random () & 31;
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if (random () & 1)
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align2 = random () & 31;
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else
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align2 = align1 + (random () & 24);
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pos = random () & 511;
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j = align1 > align2 ? align1 : align2;
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if (pos + j >= 511)
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pos = 510 - j - (random () & 7);
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len1 = random () & 511;
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if (pos >= len1 && (random () & 1))
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len1 = pos + (random () & 7);
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if (len1 + j >= 512)
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len1 = 511 - j - (random () & 7);
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if (pos >= len1)
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len2 = len1;
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else
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len2 = len1 + (len1 != 511 - j ? random () % (511 - j - len1) : 0);
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j = (pos > len2 ? pos : len2) + align1 + 64;
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if (j > 512)
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j = 512;
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for (i = 0; i < j; ++i)
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{
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p1[i] = tolower (random () & 255);
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if (i < len1 + align1 && !p1[i])
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{
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p1[i] = tolower (random () & 255);
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if (!p1[i])
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p1[i] = tolower (1 + (random () & 127));
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}
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}
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for (i = 0; i < j; ++i)
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{
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p2[i] = toupper (random () & 255);
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if (i < len2 + align2 && !p2[i])
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{
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p2[i] = toupper (random () & 255);
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if (!p2[i])
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toupper (p2[i] = 1 + (random () & 127));
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}
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}
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result = 0;
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memcpy (p2 + align2, p1 + align1, pos);
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if (pos < len1)
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{
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if (tolower (p2[align2 + pos]) == p1[align1 + pos])
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{
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p2[align2 + pos] = toupper (random () & 255);
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if (tolower (p2[align2 + pos]) == p1[align1 + pos])
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p2[align2 + pos] = toupper (p1[align1 + pos]
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+ 3 + (random () & 127));
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}
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if (p1[align1 + pos] < tolower (p2[align2 + pos]))
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result = -1;
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else
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result = 1;
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}
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p1[len1 + align1] = 0;
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p2[len2 + align2] = 0;
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FOR_EACH_IMPL (impl, 1)
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{
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r = CALL (impl, (char *) (p1 + align1), (char *) (p2 + align2));
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/* Test whether on 64-bit architectures where ABI requires
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callee to promote has the promotion been done. */
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asm ("" : "=g" (r) : "0" (r));
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if ((r == 0 && result)
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|| (r < 0 && result >= 0)
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|| (r > 0 && result <= 0))
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{
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error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %zd) %ld != %d, p1 %p p2 %p",
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n, impl->name, align1, align2, len1, len2, pos, r, result, p1, p2);
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ret = 1;
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}
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}
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}
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}
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static void
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test_locale (const char *locale, int extra_tests)
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{
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size_t i, j, k;
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const size_t test_len = MIN(TEST_LEN, 3 * 4096);
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if (setlocale (LC_CTYPE, locale) == NULL)
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{
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error (0, 0, "cannot set locale \"%s\"", locale);
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ret = 1;
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}
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printf ("%-23s", locale);
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FOR_EACH_IMPL (impl, 0)
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printf ("\t%s", impl->name);
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putchar ('\n');
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for (i = 1; i < 16; ++i)
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{
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do_test (i, i, i, 127, 0);
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do_test (i, i, i, 127, 1);
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do_test (i, i, i, 127, -1);
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}
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for (i = 1; i < 10; ++i)
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{
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do_test (0, 0, 2 << i, 127, 0);
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do_test (0, 0, 2 << i, 254, 0);
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do_test (0, 0, 2 << i, 127, 1);
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do_test (0, 0, 2 << i, 254, 1);
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do_test (0, 0, 2 << i, 127, -1);
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do_test (0, 0, 2 << i, 254, -1);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (i, 2 * i, 8 << i, 127, 0);
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do_test (2 * i, i, 8 << i, 254, 0);
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do_test (i, 2 * i, 8 << i, 127, 1);
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do_test (2 * i, i, 8 << i, 254, 1);
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do_test (i, 2 * i, 8 << i, 127, -1);
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do_test (2 * i, i, 8 << i, 254, -1);
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}
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for (j = 0; extra_tests && j < 160; ++j)
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{
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for (i = 0; i < test_len;)
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{
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do_test (getpagesize () - j - 1, 0, i, 127, 0);
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do_test (getpagesize () - j - 1, 0, i, 127, 1);
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do_test (getpagesize () - j - 1, 0, i, 127, -1);
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do_test (getpagesize () - j - 1, j, i, 127, 0);
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do_test (getpagesize () - j - 1, j, i, 127, 1);
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do_test (getpagesize () - j - 1, j, i, 127, -1);
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do_test (0, getpagesize () - j - 1, i, 127, 0);
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do_test (0, getpagesize () - j - 1, i, 127, 1);
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do_test (0, getpagesize () - j - 1, i, 127, -1);
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do_test (j, getpagesize () - j - 1, i, 127, 0);
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do_test (j, getpagesize () - j - 1, i, 127, 1);
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do_test (j, getpagesize () - j - 1, i, 127, -1);
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for (k = 2; k <= 128; k += k)
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{
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do_test (getpagesize () - k, getpagesize () - j - 1, i, 127, 0);
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do_test (getpagesize () - k - 1, getpagesize () - j - 1, i, 127,
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0);
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do_test (getpagesize () - k, getpagesize () - j - 1, i, 127, 1);
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do_test (getpagesize () - k - 1, getpagesize () - j - 1, i, 127,
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1);
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do_test (getpagesize () - k, getpagesize () - j - 1, i, 127, -1);
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do_test (getpagesize () - k - 1, getpagesize () - j - 1, i, 127,
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-1);
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}
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if (i < 32)
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{
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i += 1;
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}
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else if (i < 161)
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{
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i += 7;
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}
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else if (i + 161 < test_len)
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{
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i += 31;
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i *= 17;
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i /= 16;
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if (i + 161 > test_len)
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{
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i = test_len - 160;
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}
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}
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else if (i + 32 < test_len)
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{
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i += 7;
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}
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else
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{
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i += 1;
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}
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}
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}
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do_random_tests ();
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}
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int
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test_main (void)
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{
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test_init ();
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test_locale ("C", 1);
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test_locale ("en_US.ISO-8859-1", 0);
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test_locale ("en_US.UTF-8", 0);
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test_locale ("tr_TR.ISO-8859-9", 0);
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test_locale ("tr_TR.UTF-8", 0);
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return ret;
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}
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#include <support/test-driver.c>
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