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Use IFUNC memmove/memset in x86-64 bcopy/bzero

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Also add separate tests for bcopy and bzero.
This commit is contained in:
H.J. Lu
2012-10-11 13:58:16 -07:00
parent 54a417345e
commit 9a387d1f78
9 changed files with 152 additions and 49 deletions
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63
string/test-memset.c
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@@ -1,5 +1,5 @@
/* Test and measure memset functions.
Copyright (C) 1999, 2002, 2003, 2005 Free Software Foundation, Inc.
Copyright (C) 1999-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
@@ -21,14 +21,43 @@
#define MIN_PAGE_SIZE 131072
#include "test-string.h"
typedef char *(*proto_t) (char *, int, size_t);
char *simple_memset (char *, int, size_t);
#ifdef TEST_BZERO
typedef void (*proto_t) (char *, size_t);
void simple_bzero (char *, size_t);
void builtin_bzero (char *, size_t);
IMPL (simple_bzero, 0)
IMPL (builtin_bzero, 0)
IMPL (bzero, 1)
void
simple_bzero (char *s, size_t n)
{
simple_memset (s, 0, n);
}
void
builtin_bzero (char *s, size_t n)
{
__builtin_bzero (s, n);
}
#else
typedef char *(*proto_t) (char *, int, size_t);
char *builtin_memset (char *, int, size_t);
IMPL (simple_memset, 0)
IMPL (builtin_memset, 0)
IMPL (memset, 1)
char *
builtin_memset (char *s, int c, size_t n)
{
return __builtin_memset (s, c, n);
}
#endif
char *
simple_memset (char *s, int c, size_t n)
{
@@ -38,20 +67,20 @@ simple_memset (char *s, int c, size_t n)
return s;
}
char *
builtin_memset (char *s, int c, size_t n)
{
return __builtin_memset (s, c, n);
}
static void
do_one_test (impl_t *impl, char *s, int c, size_t n)
do_one_test (impl_t *impl, char *s, int c __attribute ((unused)), size_t n)
{
char *res = CALL (impl, s, c, n);
char tstbuf[n];
#ifdef TEST_BZERO
simple_bzero (tstbuf, n);
CALL (impl, s, n);
if (memcmp (s, tstbuf, n) != 0)
#else
char *res = CALL (impl, s, c, n);
if (res != s
|| simple_memset (tstbuf, c, n) != tstbuf
|| memcmp (s, tstbuf, n) != 0)
#endif
{
error (0, 0, "Wrong result in function %s", impl->name);
ret = 1;
@@ -68,7 +97,12 @@ do_one_test (impl_t *impl, char *s, int c, size_t n)
for (i = 0; i < 32; ++i)
{
HP_TIMING_NOW (start);
#ifdef TEST_BZERO
CALL (impl, s, n);
#else
CALL (impl, s, c, n);
#endif
HP_TIMING_NOW (stop);
HP_TIMING_BEST (best_time, start, stop);
}
@@ -94,6 +128,7 @@ do_test (size_t align, int c, size_t len)
putchar ('\n');
}
#ifndef TEST_BZERO
static void
do_random_tests (void)
{
@@ -178,12 +213,13 @@ do_random_tests (void)
}
}
}
#endif
int
test_main (void)
{
size_t i;
int c;
int c = 0;
test_init ();
@@ -192,7 +228,9 @@ test_main (void)
printf ("\t%s", impl->name);
putchar ('\n');
#ifndef TEST_BZERO
for (c = -65; c <= 130; c += 65)
#endif
{
for (i = 0; i < 18; ++i)
do_test (0, c, 1 << i);
@@ -208,7 +246,10 @@ test_main (void)
do_test (2, c, 25);
}
#ifndef TEST_BZERO
do_random_tests ();
#endif
return ret;
}