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authorStefan Liebler <stli@linux.vnet.ibm.com>2015-08-26 10:26:25 +0200
committerAndreas Krebbel <krebbel@linux.vnet.ibm.com>2015-08-26 10:26:25 +0200
commit2e9e166761fed5dfaa53480412bef0656f1b5306 (patch)
tree3533f977b8b80458051ec0c33b23e961a6a556da /string
parent9b593dc3055d44a4179c03050be58a437ae385a1 (diff)
S390: Optimize wmemset.
This patch provides optimized version of wmemset with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/wmemset-c.c: New File. * sysdeps/s390/multiarch/wmemset-vx.S: Likewise. * sysdeps/s390/multiarch/wmemset.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add wmemset functions. * sysdeps/s390/multiarch/ifunc-impl-list-common.c (__libc_ifunc_impl_list_common): Add ifunc test for wmemset. * wcsmbs/wmemset.c: Use WMEMSET if defined. * string/test-memset.c: Add wmemset support. * wcsmbs/test-wmemset.c: New File. * wcsmbs/Makefile (strop-tests): Add wmemset. * benchtests/bench-memset.c: Add wmemset support. * benchtests/bench-wmemset.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wmemset.
Diffstat (limited to 'string')
-rw-r--r--string/test-memset.c90
1 files changed, 58 insertions, 32 deletions
diff --git a/string/test-memset.c b/string/test-memset.c
index 9f3af468b0..79b298333c 100644
--- a/string/test-memset.c
+++ b/string/test-memset.c
@@ -1,4 +1,4 @@
-/* Test and measure memset functions.
+/* Test memset functions.
Copyright (C) 1999-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
@@ -21,12 +21,33 @@
#ifdef TEST_BZERO
# define TEST_NAME "bzero"
#else
-# define TEST_NAME "memset"
-#endif
+# ifndef WIDE
+# define TEST_NAME "memset"
+# else
+# define TEST_NAME "wmemset"
+# endif /* WIDE */
+#endif /* !TEST_BZERO */
#define MIN_PAGE_SIZE 131072
#include "test-string.h"
-char *simple_memset (char *, int, size_t);
+#ifndef WIDE
+# define MEMSET memset
+# define CHAR char
+# define UCHAR unsigned char
+# define SIMPLE_MEMSET simple_memset
+# define MEMCMP memcmp
+# define BIG_CHAR CHAR_MAX
+#else
+# include <wchar.h>
+# define MEMSET wmemset
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define SIMPLE_MEMSET simple_wmemset
+# define MEMCMP wmemcmp
+# define BIG_CHAR WCHAR_MAX
+#endif /* WIDE */
+
+CHAR *SIMPLE_MEMSET (CHAR *, int, size_t);
#ifdef TEST_BZERO
typedef void (*proto_t) (char *, size_t);
@@ -40,7 +61,7 @@ IMPL (bzero, 1)
void
simple_bzero (char *s, size_t n)
{
- simple_memset (s, 0, n);
+ SIMPLE_MEMSET (s, 0, n);
}
void
@@ -49,44 +70,48 @@ 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);
+typedef CHAR *(*proto_t) (CHAR *, int, size_t);
-IMPL (simple_memset, 0)
+IMPL (SIMPLE_MEMSET, 0)
+# ifndef WIDE
+char *builtin_memset (char *, int, size_t);
IMPL (builtin_memset, 0)
-IMPL (memset, 1)
+# endif /* !WIDE */
+IMPL (MEMSET, 1)
+# ifndef WIDE
char *
builtin_memset (char *s, int c, size_t n)
{
return __builtin_memset (s, c, n);
}
-#endif
+# endif /* !WIDE */
+#endif /* !TEST_BZERO */
-char *
+CHAR *
inhibit_loop_to_libcall
-simple_memset (char *s, int c, size_t n)
+SIMPLE_MEMSET (CHAR *s, int c, size_t n)
{
- char *r = s, *end = s + n;
+ CHAR *r = s, *end = s + n;
while (r < end)
*r++ = c;
return s;
}
static void
-do_one_test (impl_t *impl, char *s, int c __attribute ((unused)), size_t n)
+do_one_test (impl_t *impl, CHAR *s, int c __attribute ((unused)), size_t n)
{
- char tstbuf[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);
+ CHAR *res = CALL (impl, s, c, n);
if (res != s
- || simple_memset (tstbuf, c, n) != tstbuf
- || memcmp (s, tstbuf, n) != 0)
-#endif
+ || SIMPLE_MEMSET (tstbuf, c, n) != tstbuf
+ || MEMCMP (s, tstbuf, n) != 0)
+#endif /* !TEST_BZERO */
{
error (0, 0, "Wrong result in function %s", impl->name);
ret = 1;
@@ -98,11 +123,11 @@ static void
do_test (size_t align, int c, size_t len)
{
align &= 7;
- if (align + len > page_size)
+ if ((align + len) * sizeof (CHAR) > page_size)
return;
FOR_EACH_IMPL (impl, 0)
- do_one_test (impl, (char *) buf1 + align, c, len);
+ do_one_test (impl, (CHAR *) (buf1) + align, c, len);
}
#ifndef TEST_BZERO
@@ -111,18 +136,19 @@ do_random_tests (void)
{
size_t i, j, k, n, align, len, size;
int c, o;
- unsigned char *p, *res;
+ UCHAR *p, *res;
+ UCHAR *p2 = (UCHAR *) buf2;
- for (i = 0; i < 65536; ++i)
- buf2[i] = random () & 255;
+ for (i = 0; i < 65536 / sizeof (CHAR); ++i)
+ p2[i] = random () & BIG_CHAR;
for (n = 0; n < ITERATIONS; n++)
{
if ((random () & 31) == 0)
- size = 65536;
+ size = 65536 / sizeof (CHAR);
else
size = 512;
- p = buf1 + page_size - size;
+ p = (UCHAR *) (buf1 + page_size) - size;
len = random () & (size - 1);
align = size - len - (random () & 31);
if (align > size)
@@ -132,10 +158,10 @@ do_random_tests (void)
if ((random () & 7) == 0)
c = 0;
else
- c = random () & 255;
- o = random () & 255;
+ c = random () & BIG_CHAR;
+ o = random () & BIG_CHAR;
if (o == c)
- o = (c + 1) & 255;
+ o = (c + 1) & BIG_CHAR;
j = len + align + 128;
if (j > size)
j = size;
@@ -152,11 +178,11 @@ do_random_tests (void)
{
for (i = 0; i < len; ++i)
{
- p[i + align] = buf2[i];
+ p[i + align] = p2[i];
if (p[i + align] == c)
p[i + align] = o;
}
- res = (unsigned char *) CALL (impl, (char *) p + align, c, len);
+ res = (UCHAR *) CALL (impl, (CHAR *) p + align, c, len);
if (res != p + align)
{
error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %d, %zd) %p != %p",
@@ -190,7 +216,7 @@ do_random_tests (void)
}
}
}
-#endif
+#endif /* !TEST_BZERO */
int
test_main (void)