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S390: Optimize strcspn and wcscspn.
This patch provides optimized versions of strcspn and wcscspn with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strcspn-c.c: New File. * sysdeps/s390/multiarch/strcspn-vx.S: Likewise. * sysdeps/s390/multiarch/strcspn.c: Likewise. * sysdeps/s390/multiarch/wcscspn-c.c: Likewise. * sysdeps/s390/multiarch/wcscspn-vx.S: Likewise. * sysdeps/s390/multiarch/wcscspn.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcspn and wcscspn functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strcspn, wcscspn. * wcsmbs/wcscspn.c: Use WCSCSPN if defined. * string/test-strcspn.c: Add wcscspn support. * wcsmbs/test-wcscspn.c: New File. * wcsmbs/Makefile (strop-tests): Add wcscspn. * benchtests/bench-strcspn.c: Add wcscspn support. * benchtests/bench-wcscspn.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcscspn.
This commit is contained in:
Stefan Liebler
Andreas Krebbel
parent
f0ba659847
commit
b4c21601b1
20
ChangeLog
20
ChangeLog
@ -1,3 +1,23 @@
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2015-08-26 Stefan Liebler <stli@linux.vnet.ibm.com>
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* sysdeps/s390/multiarch/strcspn-c.c: New File.
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* sysdeps/s390/multiarch/strcspn-vx.S: Likewise.
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* sysdeps/s390/multiarch/strcspn.c: Likewise.
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* sysdeps/s390/multiarch/wcscspn-c.c: Likewise.
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* sysdeps/s390/multiarch/wcscspn-vx.S: Likewise.
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* sysdeps/s390/multiarch/wcscspn.c: Likewise.
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* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcspn and
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wcscspn functions.
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* sysdeps/s390/multiarch/ifunc-impl-list.c
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(__libc_ifunc_impl_list): Add ifunc test for strcspn, wcscspn.
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* wcsmbs/wcscspn.c: Use WCSCSPN if defined.
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* string/test-strcspn.c: Add wcscspn support.
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* wcsmbs/test-wcscspn.c: New File.
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* wcsmbs/Makefile (strop-tests): Add wcscspn.
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* benchtests/bench-strcspn.c: Add wcscspn support.
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* benchtests/bench-wcscspn.c: New File.
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* benchtests/Makefile (wcsmbs-bench): Add wcscspn.
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2015-08-26 Stefan Liebler <stli@linux.vnet.ibm.com>
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* sysdeps/s390/multiarch/strpbrk-c.c: New File.
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@ -37,7 +37,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
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strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \
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strcoll
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wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \
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wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk
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wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn
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string-bench-all := $(string-bench) ${wcsmbs-bench}
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# We have to generate locales
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@ -19,22 +19,41 @@
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#define STRPBRK_RESULT(s, pos) (pos)
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#define RES_TYPE size_t
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#define TEST_MAIN
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#define TEST_NAME "strcspn"
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#ifndef WIDE
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# define TEST_NAME "strcspn"
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#else
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# define TEST_NAME "wcscspn"
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#endif /* WIDE */
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#include "bench-string.h"
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typedef size_t (*proto_t) (const char *, const char *);
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size_t simple_strcspn (const char *, const char *);
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size_t stupid_strcspn (const char *, const char *);
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#ifndef WIDE
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# define STRCSPN strcspn
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# define CHAR char
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# define SIMPLE_STRCSPN simple_strcspn
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# define STUPID_STRCSPN stupid_strcspn
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# define STRLEN strlen
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#else
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# include <wchar.h>
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# define STRCSPN wcscspn
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# define CHAR wchar_t
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# define SIMPLE_STRCSPN simple_wcscspn
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# define STUPID_STRCSPN stupid_wcscspn
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# define STRLEN wcslen
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#endif /* WIDE */
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IMPL (stupid_strcspn, 0)
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IMPL (simple_strcspn, 0)
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IMPL (strcspn, 1)
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typedef size_t (*proto_t) (const CHAR *, const CHAR *);
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size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *);
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size_t STUPID_STRCSPN (const CHAR *, const CHAR *);
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IMPL (STUPID_STRCSPN, 0)
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IMPL (SIMPLE_STRCSPN, 0)
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IMPL (STRCSPN, 1)
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size_t
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simple_strcspn (const char *s, const char *rej)
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SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej)
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{
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const char *r, *str = s;
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char c;
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const CHAR *r, *str = s;
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CHAR c;
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while ((c = *s++) != '\0')
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for (r = rej; *r != '\0'; ++r)
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@ -44,9 +63,9 @@ simple_strcspn (const char *s, const char *rej)
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}
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size_t
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stupid_strcspn (const char *s, const char *rej)
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STUPID_STRCSPN (const CHAR *s, const CHAR *rej)
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{
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size_t ns = strlen (s), nrej = strlen (rej);
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size_t ns = STRLEN (s), nrej = STRLEN (rej);
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size_t i, j;
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for (i = 0; i < ns; ++i)
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@ -56,4 +75,6 @@ stupid_strcspn (const char *s, const char *rej)
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return i;
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}
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#undef CHAR
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#undef STRLEN
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#include "bench-strpbrk.c"
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20
benchtests/bench-wcscspn.c
Normal file
20
benchtests/bench-wcscspn.c
Normal file
@ -0,0 +1,20 @@
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/* Measure wcscspn functions.
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Copyright (C) 2015 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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<http://www.gnu.org/licenses/>. */
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#define WIDE 1
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#include "bench-strcspn.c"
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@ -1,4 +1,4 @@
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/* Test and measure strcspn functions.
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/* Test strcspn functions.
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Copyright (C) 1999-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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@ -20,22 +20,41 @@
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#define STRPBRK_RESULT(s, pos) (pos)
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#define RES_TYPE size_t
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#define TEST_MAIN
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#define TEST_NAME "strcspn"
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#ifndef WIDE
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# define TEST_NAME "strcspn"
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#else
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# define TEST_NAME "wcscspn"
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#endif /* WIDE */
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#include "test-string.h"
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typedef size_t (*proto_t) (const char *, const char *);
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size_t simple_strcspn (const char *, const char *);
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size_t stupid_strcspn (const char *, const char *);
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#ifndef WIDE
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# define STRCSPN strcspn
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# define CHAR char
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# define SIMPLE_STRCSPN simple_strcspn
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# define STUPID_STRCSPN stupid_strcspn
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# define STRLEN strlen
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#else
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# include <wchar.h>
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# define STRCSPN wcscspn
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# define CHAR wchar_t
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# define SIMPLE_STRCSPN simple_wcscspn
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# define STUPID_STRCSPN stupid_wcscspn
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# define STRLEN wcslen
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#endif /* WIDE */
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IMPL (stupid_strcspn, 0)
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IMPL (simple_strcspn, 0)
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IMPL (strcspn, 1)
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typedef size_t (*proto_t) (const CHAR *, const CHAR *);
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size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *);
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size_t STUPID_STRCSPN (const CHAR *, const CHAR *);
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IMPL (STUPID_STRCSPN, 0)
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IMPL (SIMPLE_STRCSPN, 0)
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IMPL (STRCSPN, 1)
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size_t
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simple_strcspn (const char *s, const char *rej)
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SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej)
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{
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const char *r, *str = s;
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char c;
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const CHAR *r, *str = s;
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CHAR c;
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while ((c = *s++) != '\0')
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for (r = rej; *r != '\0'; ++r)
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@ -45,9 +64,9 @@ simple_strcspn (const char *s, const char *rej)
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}
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size_t
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stupid_strcspn (const char *s, const char *rej)
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STUPID_STRCSPN (const CHAR *s, const CHAR *rej)
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{
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size_t ns = strlen (s), nrej = strlen (rej);
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size_t ns = STRLEN (s), nrej = STRLEN (rej);
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size_t i, j;
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for (i = 0; i < ns; ++i)
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@ -57,4 +76,6 @@ stupid_strcspn (const char *s, const char *rej)
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return i;
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}
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#undef CHAR
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#undef STRLEN
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#include "test-strpbrk.c"
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@ -13,7 +13,8 @@ sysdep_routines += strlen strlen-vx strlen-c \
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strchrnul strchrnul-vx strchrnul-c \
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strrchr strrchr-vx strrchr-c \
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strspn strspn-vx strspn-c \
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strpbrk strpbrk-vx strpbrk-c
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strpbrk strpbrk-vx strpbrk-c \
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strcspn strcspn-vx strcspn-c
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endif
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ifeq ($(subdir),wcsmbs)
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@ -31,5 +32,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \
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wcschrnul wcschrnul-vx wcschrnul-c \
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wcsrchr wcsrchr-vx wcsrchr-c \
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wcsspn wcsspn-vx wcsspn-c \
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wcspbrk wcspbrk-vx wcspbrk-c
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wcspbrk wcspbrk-vx wcspbrk-c \
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wcscspn wcscspn-vx wcscspn-c
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endif
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@ -124,6 +124,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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IFUNC_VX_IMPL (strpbrk);
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IFUNC_VX_IMPL (wcspbrk);
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IFUNC_VX_IMPL (strcspn);
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IFUNC_VX_IMPL (wcscspn);
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#endif /* HAVE_S390_VX_ASM_SUPPORT */
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return i;
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28
sysdeps/s390/multiarch/strcspn-c.c
Normal file
28
sysdeps/s390/multiarch/strcspn-c.c
Normal file
@ -0,0 +1,28 @@
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/* Default strcspn implementation for S/390.
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Copyright (C) 2015 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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<http://www.gnu.org/licenses/>. */
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#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
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# define STRCSPN __strcspn_c
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# ifdef SHARED
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# undef libc_hidden_builtin_def
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# define libc_hidden_builtin_def(name) \
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__hidden_ver1 (__strcspn_c, __GI_strcspn, __strcspn_c);
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# endif /* SHARED */
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# include <string/strcspn.c>
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#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
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281
sysdeps/s390/multiarch/strcspn-vx.S
Normal file
281
sysdeps/s390/multiarch/strcspn-vx.S
Normal file
@ -0,0 +1,281 @@
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/* Vector optimized 32/64 bit S/390 version of strcspn.
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Copyright (C) 2015 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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<http://www.gnu.org/licenses/>. */
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#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
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# include "sysdep.h"
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# include "asm-syntax.h"
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.text
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/* size_t strcspn (const char *s, const char * reject)
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The strcspn() function calculates the length of the initial segment
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of s which consists entirely of characters not in reject.
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This method checks the length of reject string. If it fits entirely
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in one vector register, a fast algorithm is used, which does not need
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to check multiple parts of accept-string. Otherwise a slower full
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check of accept-string is used.
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register overview:
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r3: pointer to start of reject-string
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r2: pointer to start of search-string
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r0: loaded byte count of vlbb search-string
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r4: found byte index
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r1: current return len
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v16: search-string
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v17: reject-string
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v18: temp-vreg
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ONLY FOR SLOW:
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v19: first reject-string
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v20: zero for preparing acc-vector
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v21: global mask; 1 indicates a match between
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search-string-vreg and any reject-character
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v22: current mask; 1 indicates a match between
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search-string-vreg and any reject-character in current acc-vreg
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v24: one for result-checking of former string-part
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v30, v31: for re-/storing registers r6, r8, r9
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r5: current len of reject-string
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r6: zero-index in search-string or 16 if no zero
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or min(zero-index, loaded byte count)
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r8: >0, if former reject-string-part contains a zero,
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otherwise =0;
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r9: loaded byte count of vlbb reject-string
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*/
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ENTRY(__strcspn_vx)
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.machine "z13"
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.machinemode "zarch_nohighgprs"
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/*
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Check if reject-string fits in one vreg:
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----------------------------------------
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*/
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vlbb %v17,0(%r3),6 /* Load reject. */
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lghi %r1,0 /* Zero out current len. */
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lcbb %r0,0(%r3),6
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jo .Lcheck_onbb /* Special case if reject
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lays on block-boundary. */
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.Lcheck_notonbb:
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vistrbs %v17,%v17 /* Fill with zeros after first zero. */
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je .Lfast /* Zero found -> reject fits in one vreg. */
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j .Lslow /* No zero -> reject exceeds one vreg. */
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.Lcheck_onbb:
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/* Reject lays on block-boundary. */
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vfenezb %v18,%v17,%v17 /* Search zero in loaded reject bytes. */
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vlgvb %r4,%v18,7 /* Get index of zero or 16 if not found. */
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clrjl %r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count ->
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Reject fits in one vreg;
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Fill with zeros and proceed
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with FAST. */
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vl %v17,0(%r3) /* Load reject, which exceeds loaded bytes. */
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j .Lcheck_notonbb /* Check if reject fits in one vreg. */
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/*
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Search s for reject in one vreg
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-------------------------------
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*/
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.Lfast:
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/* Complete reject-string in v17 and remaining bytes are zero. */
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vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */
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lcbb %r0,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */
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vfaezbs %v18,%v16,%v17,0 /* Find first element in v16
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unequal to any in v17
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or first zero element. */
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vlgvb %r4,%v18,7 /* Load byte index of found element. */
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clrjl %r4,%r0,.Lfast_loop_found2 /* If found index is within loaded
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bytes, return with found element
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index (=equal count). */
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/* Align s to 16 byte. */
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risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */
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lghi %r1,16 /* current_len = 16. */
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slr %r1,%r4 /* Compute bytes to 16bytes boundary. */
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/* Process s in 16byte aligned loop. */
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.Lfast_loop:
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vl %v16,0(%r1,%r2) /* Load search-string. */
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vfaezbs %v18,%v16,%v17,0 /* Find first element in v16 equal to any
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in v17 or first zero element. */
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jno .Lfast_loop_found
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vl %v16,16(%r1,%r2)
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vfaezbs %v18,%v16,%v17,0
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jno .Lfast_loop_found16
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vl %v16,32(%r1,%r2)
|
||||
vfaezbs %v18,%v16,%v17,0
|
||||
jno .Lfast_loop_found32
|
||||
|
||||
vl %v16,48(%r1,%r2)
|
||||
vfaezbs %v18,%v16,%v17,0
|
||||
jno .Lfast_loop_found48
|
||||
|
||||
aghi %r1,64
|
||||
j .Lfast_loop /* Loop if no element was unequal to reject
|
||||
and not zero. */
|
||||
|
||||
/* Found equal or zero element. */
|
||||
.Lfast_loop_found48:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found32:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found16:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found:
|
||||
vlgvb %r4,%v18,7 /* Load byte index of found element or zero. */
|
||||
.Lfast_loop_found2:
|
||||
algrk %r2,%r1,%r4 /* Add found index to current len. */
|
||||
br %r14
|
||||
|
||||
|
||||
|
||||
/*
|
||||
Search s for reject in multiple vregs
|
||||
-------------------------------------
|
||||
*/
|
||||
.Lslow:
|
||||
/* Save registers. */
|
||||
vlvgg %v30,%r6,0
|
||||
vlvgp %v31,%r8,%r9
|
||||
|
||||
/* Reject in v17 without zero. */
|
||||
vlr %v19,%v17 /* Save first acc-part for a fast reload. */
|
||||
vzero %v20 /* Zero for preparing acc-vector. */
|
||||
vone %v24 /* One for checking result of former
|
||||
string-part. */
|
||||
|
||||
/* Align s to 16 byte. */
|
||||
risbg %r4,%r2,60,128+63,0 /* Test if s is aligned and
|
||||
%r4 = bits 60-63 'and' 15. */
|
||||
je .Lslow_loop_str /* If s is aligned, loop aligned. */
|
||||
lghi %r0,15
|
||||
slr %r0,%r4 /* Compute highest index to load (15-x). */
|
||||
vll %v16,%r0,0(%r2) /* Load up to 16 byte boundary (vll needs
|
||||
highest index, remaining bytes are 0). */
|
||||
ahi %r0,1 /* Work with loaded byte count. */
|
||||
vzero %v21 /* Zero out global mask. */
|
||||
lghi %r5,0 /* Set current len of reject-string to zero. */
|
||||
vfenezb %v18,%v16,%v16 /* Find zero in current string-part. */
|
||||
lghi %r8,0 /* There is no zero in first reject-part. */
|
||||
vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */
|
||||
clije %r6,0,.Lslow_end /* If first element is zero -> return 0. */
|
||||
clr %r0,%r6 /* cc==1 if loaded byte count < zero-index. */
|
||||
locrl %r6,%r0 /* Load on cc==1; zero-index = lbc. */
|
||||
j .Lslow_loop_acc
|
||||
|
||||
|
||||
/* Process s in 16byte aligned loop. */
|
||||
.Lslow_next_str:
|
||||
/* Check results of former processed str-part. */
|
||||
vfeeb %v18,%v21,%v24 /* Find first equal match in global mask
|
||||
(ones in element). */
|
||||
vlgvb %r4,%v18,7 /* Get index of first one (=equal) or 16. */
|
||||
/* Equal-index < min(zero-index, loaded byte count)
|
||||
-> Return pointer to equal element. */
|
||||
clrjl %r4,%r6,.Lslow_index_found
|
||||
/* Zero-index < loaded byte count
|
||||
-> Former str-part was last str-part
|
||||
-> Return null */
|
||||
clrjl %r6,%r0,.Lslow_end_not_found
|
||||
|
||||
/* All elements are zero (=no match) -> Proceed with next str-part. */
|
||||
vlr %v17,%v19 /* Load first part of reject (no zero). */
|
||||
algfr %r1,%r0 /* Add loaded byte count to current len. */
|
||||
|
||||
.Lslow_loop_str:
|
||||
vl %v16,0(%r1,%r2) /* Load search-string. */
|
||||
lghi %r0,16 /* Loaded byte count is 16. */
|
||||
vzero %v21 /* Zero out global mask. */
|
||||
lghi %r5,0 /* Set current len of reject to zero. */
|
||||
vfenezb %v18,%v16,%v16 /* Find zero in current string-part. */
|
||||
lghi %r8,0 /* There is no zero in first reject-part. */
|
||||
vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */
|
||||
clije %r6,0,.Lslow_end /* If first element is zero (end of string)
|
||||
-> Return current length. */
|
||||
|
||||
.Lslow_loop_acc:
|
||||
vfaeb %v22,%v16,%v17,4 /* Create matching-mask (1 in mask ->
|
||||
Character matches any rejected character in
|
||||
this reject-string-part) IN=0, RT=1. */
|
||||
vlgvb %r4,%v22,0 /* Get result of first element. */
|
||||
/* First element is equal to any rejected characters?
|
||||
(all other parts of reject cannot lead to a match before this one)
|
||||
-> Return current len, which is pointing to this element. */
|
||||
clijh %r4,0,.Lslow_end
|
||||
vo %v21,%v21,%v22 /* Global-mask = global-|matching-mask. */
|
||||
/* Proceed with next acc until end of acc is reached. */
|
||||
|
||||
|
||||
.Lslow_next_acc:
|
||||
clijh %r8,0,.Lslow_next_str /* There was a zero in last reject-part
|
||||
-> Add found index to current len
|
||||
and end. */
|
||||
vlbb %v17,16(%r5,%r3),6 /* Load next reject part. */
|
||||
aghi %r5,16 /* Increment current len of reject-string. */
|
||||
lcbb %r9,0(%r5,%r3),6 /* Get loaded byte count of reject-string. */
|
||||
jo .Lslow_next_acc_onbb /* Jump away if reject-string is
|
||||
on block-boundary. */
|
||||
.Lslow_next_acc_notonbb:
|
||||
vistrbs %v17,%v17 /* Fill with zeros after first zero. */
|
||||
jo .Lslow_loop_acc /* No zero found -> no preparation needed. */
|
||||
|
||||
.Lslow_next_acc_prepare_zero:
|
||||
/* Zero in reject-part: fill zeros with first-reject-character. */
|
||||
vlgvb %r8,%v17,0 /* Load first element of reject-part. */
|
||||
clije %r8,0,.Lslow_next_str /* Process next str-part if first
|
||||
character in this part of reject
|
||||
is a zero. */
|
||||
/* r8>0 -> zero found in this acc-part. */
|
||||
vrepb %v18,%v17,0 /* Replicate first char accross all chars. */
|
||||
vceqb %v22,%v20,%v17 /* Create a mask (v22) of null chars
|
||||
by comparing with 0 (v20). */
|
||||
vsel %v17,%v18,%v17,%v22 /* Replace null chars with first char. */
|
||||
j .Lslow_loop_acc /* Reject-string part is prepared. */
|
||||
|
||||
.Lslow_next_acc_onbb:
|
||||
vfenezb %v18,%v17,%v17 /* Find zero in loaded bytes of reject part. */
|
||||
vlgvb %r8,%v18,7 /* Load byte index of zero. */
|
||||
clrjl %r8,%r9,.Lslow_next_acc_notonbb /* Found a zero in loaded bytes
|
||||
-> Prepare vreg. */
|
||||
vl %v17,0(%r5,%r3) /* Load over boundary ... */
|
||||
lghi %r8,0 /* r8=0 -> no zero in this part of acc,
|
||||
check for zero is in jump-target. */
|
||||
j .Lslow_next_acc_notonbb /* ... and search for zero in
|
||||
fully loaded vreg again. */
|
||||
|
||||
.Lslow_end_not_found:
|
||||
algfr %r1,%r6 /* Add zero-index to current len. */
|
||||
j .Lslow_end
|
||||
.Lslow_index_found:
|
||||
algfr %r1,%r4 /* Add found index of char to current len. */
|
||||
.Lslow_end:
|
||||
lgr %r2,%r1
|
||||
/* Restore registers. */
|
||||
vlgvg %r6,%v30,0
|
||||
vlgvg %r8,%v31,0
|
||||
vlgvg %r9,%v31,1
|
||||
br %r14
|
||||
END(__strcspn_vx)
|
||||
#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
||||
27
sysdeps/s390/multiarch/strcspn.c
Normal file
27
sysdeps/s390/multiarch/strcspn.c
Normal file
@ -0,0 +1,27 @@
|
||||
/* Multiple versions of strcspn.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
||||
# include <string.h>
|
||||
# include <ifunc-resolve.h>
|
||||
|
||||
s390_vx_libc_ifunc2 (__strcspn, strcspn)
|
||||
|
||||
#else
|
||||
# include <string/strcspn.c>
|
||||
#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
||||
26
sysdeps/s390/multiarch/wcscspn-c.c
Normal file
26
sysdeps/s390/multiarch/wcscspn-c.c
Normal file
@ -0,0 +1,26 @@
|
||||
/* Default wcscscpn implementation for S/390.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
||||
# define WCSCSPN __wcscspn_c
|
||||
|
||||
# include <wchar.h>
|
||||
extern __typeof (wcscspn) __wcscspn_c;
|
||||
|
||||
# include <wcsmbs/wcscspn.c>
|
||||
#endif
|
||||
293
sysdeps/s390/multiarch/wcscspn-vx.S
Normal file
293
sysdeps/s390/multiarch/wcscspn-vx.S
Normal file
@ -0,0 +1,293 @@
|
||||
/* Vector optimized 32/64 bit S/390 version of wcscspn.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
||||
|
||||
# include "sysdep.h"
|
||||
# include "asm-syntax.h"
|
||||
|
||||
.text
|
||||
|
||||
/* size_t wcscspn (const wchar_t *s, const wchar_t * reject)
|
||||
The wcscspn() function calculates the length of the initial segment
|
||||
of s which consists entirely of characters not in reject.
|
||||
|
||||
This method checks the length of reject string. If it fits entirely
|
||||
in one vector register, a fast algorithm is used, which does not need
|
||||
to check multiple parts of accept-string. Otherwise a slower full
|
||||
check of accept-string is used.
|
||||
|
||||
register overview:
|
||||
r3: pointer to start of reject-string
|
||||
r2: pointer to start of search-string
|
||||
r0: loaded byte count of vlbb search-string
|
||||
r4: found byte index
|
||||
r1: current return len
|
||||
v16: search-string
|
||||
v17: reject-string
|
||||
v18: temp-vreg
|
||||
|
||||
ONLY FOR SLOW:
|
||||
v19: first reject-string
|
||||
v20: zero for preparing acc-vector
|
||||
v21: global mask; 1 indicates a match between
|
||||
search-string-vreg and any reject-character
|
||||
v22: current mask; 1 indicates a match between
|
||||
search-string-vreg and any reject-character in current acc-vreg
|
||||
v30, v31: for re-/storing registers r6, r8, r9
|
||||
r5: current len of reject-string
|
||||
r6: zero-index in search-string or 16 if no zero
|
||||
or min(zero-index, loaded byte count)
|
||||
r8: >0, if former reject-string-part contains a zero,
|
||||
otherwise =0;
|
||||
r9: loaded byte count of vlbb reject-string
|
||||
*/
|
||||
ENTRY(__wcscspn_vx)
|
||||
.machine "z13"
|
||||
.machinemode "zarch_nohighgprs"
|
||||
|
||||
tmll %r2,3 /* Test if s is 4-byte aligned? */
|
||||
jne .Lfallback /* And use common-code variant if not. */
|
||||
|
||||
/*
|
||||
Check if reject-string fits in one vreg:
|
||||
----------------------------------------
|
||||
*/
|
||||
vlbb %v17,0(%r3),0 /* Load reject. */
|
||||
lcbb %r0,0(%r3),0
|
||||
jo .Lcheck_onbb /* Special case if reject
|
||||
lays on block-boundary. */
|
||||
|
||||
.Lcheck_notonbb:
|
||||
lghi %r1,0 /* Zero out current len. */
|
||||
vistrfs %v17,%v17 /* Fill with zeros after first zero. */
|
||||
je .Lfast /* Zero found -> reject fits in one vreg. */
|
||||
j .Lslow /* No zero -> reject exceeds one vreg. */
|
||||
|
||||
|
||||
.Lcheck_onbb:
|
||||
/* Reject lays on block-boundary. */
|
||||
nill %r0,65532 /* Recognize only fully loaded characters. */
|
||||
je .Lcheck_onbb2 /* Reload vr, if we loaded no full wchar_t. */
|
||||
vfenezf %v18,%v17,%v17 /* Search zero in loaded reject bytes. */
|
||||
vlgvb %r4,%v18,7 /* Get index of zero or 16 if not found. */
|
||||
clrjl %r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count ->
|
||||
Reject fits in one vreg;
|
||||
Fill with zeros and proceed
|
||||
with FAST. */
|
||||
.Lcheck_onbb2:
|
||||
vl %v17,0(%r3) /* Load reject, which exceeds loaded bytes. */
|
||||
j .Lcheck_notonbb /* Check if reject fits in one vreg. */
|
||||
|
||||
|
||||
/*
|
||||
Search s for reject in one vreg
|
||||
-------------------------------
|
||||
*/
|
||||
.Lfast:
|
||||
/* Complete reject-string in v17 and remaining bytes are zero. */
|
||||
|
||||
vlbb %v16,0(%r2),6 /* Load s until next 4k-byte boundary. */
|
||||
lcbb %r0,0(%r2),6 /* Get bytes to 4k-byte boundary or 16. */
|
||||
|
||||
vfaezfs %v18,%v16,%v17,0 /* Find first element in v16
|
||||
unequal to any in v17
|
||||
or first zero element. */
|
||||
vlgvb %r4,%v18,7 /* Load byte index of found element. */
|
||||
clrjl %r4,%r0,.Lfast_loop_found2 /* If found index is within loaded
|
||||
bytes, return with found element
|
||||
index (=equal count). */
|
||||
|
||||
/* Align s to 16 byte. */
|
||||
risbgn %r4,%r2,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */
|
||||
lghi %r1,16 /* current_len = 16. */
|
||||
slr %r1,%r4 /* Compute bytes to 16bytes boundary. */
|
||||
|
||||
/* Process s in 16byte aligned loop. */
|
||||
.Lfast_loop:
|
||||
vl %v16,0(%r1,%r2) /* Load search-string. */
|
||||
vfaezfs %v18,%v16,%v17,0 /* Find first element in v16 equal to any
|
||||
in v17 or first zero element. */
|
||||
jno .Lfast_loop_found
|
||||
|
||||
vl %v16,16(%r1,%r2)
|
||||
vfaezfs %v18,%v16,%v17,0
|
||||
jno .Lfast_loop_found16
|
||||
|
||||
vl %v16,32(%r1,%r2)
|
||||
vfaezfs %v18,%v16,%v17,0
|
||||
jno .Lfast_loop_found32
|
||||
|
||||
vl %v16,48(%r1,%r2)
|
||||
vfaezfs %v18,%v16,%v17,0
|
||||
jno .Lfast_loop_found48
|
||||
|
||||
aghi %r1,64
|
||||
j .Lfast_loop /* Loop if no element was unequal to reject
|
||||
and not zero. */
|
||||
|
||||
/* Found equal or zero element. */
|
||||
.Lfast_loop_found48:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found32:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found16:
|
||||
aghi %r1,16
|
||||
.Lfast_loop_found:
|
||||
vlgvb %r4,%v18,7 /* Load byte index of found element or zero. */
|
||||
.Lfast_loop_found2:
|
||||
algrk %r2,%r1,%r4 /* Add found index to current len. */
|
||||
srlg %r2,%r2,2 /* Convert byte-count to character-count. */
|
||||
br %r14
|
||||
|
||||
|
||||
|
||||
/*
|
||||
Search s for reject in multiple vregs
|
||||
-------------------------------------
|
||||
*/
|
||||
.Lslow:
|
||||
/* Save registers. */
|
||||
vlvgg %v30,%r6,0
|
||||
vlvgp %v31,%r8,%r9
|
||||
|
||||
/* Reject in v17 without zero. */
|
||||
vlr %v19,%v17 /* Save first acc-part for a fast reload. */
|
||||
vzero %v20 /* Zero for preparing acc-vector. */
|
||||
vone %v24 /* One for checking result of former
|
||||
string-part. */
|
||||
|
||||
/* Align s to 16 byte. */
|
||||
risbg %r4,%r2,60,128+63,0 /* Test if s is aligned and
|
||||
%r4 = bits 60-63 'and' 15. */
|
||||
je .Lslow_loop_str /* If s is aligned, loop aligned. */
|
||||
lghi %r0,15
|
||||
slr %r0,%r4 /* Compute highest index to load (15-x). */
|
||||
vll %v16,%r0,0(%r2) /* Load up to 16byte boundary (vll needs
|
||||
highest index, remaining bytes are 0). */
|
||||
ahi %r0,1 /* Work with loaded byte count. */
|
||||
vzero %v21 /* Zero out global mask. */
|
||||
lghi %r5,0 /* Set current len of reject-string to zero. */
|
||||
vfenezf %v18,%v16,%v16 /* Find zero in current string-part. */
|
||||
lghi %r8,0 /* There is no zero in first reject-part. */
|
||||
vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */
|
||||
clije %r6,0,.Lslow_end /* If first element is zero -> return 0. */
|
||||
clr %r0,%r6 /* cc==1 if loaded byte count < zero-index. */
|
||||
locrl %r6,%r0 /* Load on cc==1; zero-index = lbc. */
|
||||
j .Lslow_loop_acc
|
||||
|
||||
|
||||
/* Process s in 16byte aligned loop. */
|
||||
.Lslow_next_str:
|
||||
/* Check results of former processed str-part. */
|
||||
vfeef %v18,%v21,%v24 /* Find first equal match in global mask
|
||||
(ones in element). */
|
||||
vlgvb %r4,%v18,7 /* Get index of first one (=equal) or 16. */
|
||||
/* Equal-index < min(zero-index, loaded byte count)
|
||||
-> Return pointer to equal element. */
|
||||
clrjl %r4,%r6,.Lslow_index_found
|
||||
/* Zero-index < loaded byte count
|
||||
-> Former str-part was last str-part
|
||||
-> Return null */
|
||||
clrjl %r6,%r0,.Lslow_end_not_found
|
||||
|
||||
/* All elements are zero (=no match) -> proceed with next str-part. */
|
||||
vlr %v17,%v19 /* Load first part of reject (no zero). */
|
||||
algfr %r1,%r0 /* Add loaded byte count to current len. */
|
||||
|
||||
.Lslow_loop_str:
|
||||
vl %v16,0(%r1,%r2) /* Load search-string. */
|
||||
lghi %r0,16 /* Loaded byte count is 16. */
|
||||
vzero %v21 /* Zero out global mask. */
|
||||
lghi %r5,0 /* Set current len of reject to zero. */
|
||||
vfenezf %v18,%v16,%v16 /* Find zero in current string-part. */
|
||||
lghi %r8,0 /* There is no zero in first reject-part. */
|
||||
vlgvb %r6,%v18,7 /* Load byte index of zero or 16 if no zero. */
|
||||
clije %r6,0,.Lslow_end /* If first element is zero (end of string)
|
||||
-> Return current length. */
|
||||
|
||||
.Lslow_loop_acc:
|
||||
vfaef %v22,%v16,%v17,4 /* Create matching-mask (1 in mask ->
|
||||
Character matches any rejected character in
|
||||
this reject-string-part) IN=0, RT=1. */
|
||||
vlgvf %r4,%v22,0 /* Get result of first element. */
|
||||
/* First element is equal to any rejected characters?
|
||||
(All other parts of reject cannot lead to a match before this one)
|
||||
-> Return current len, which is pointing to this element. */
|
||||
clijh %r4,0,.Lslow_end
|
||||
vo %v21,%v21,%v22 /* Global-mask = global-|matching-mask. */
|
||||
/* Proceed with next acc until end of acc is reached. */
|
||||
|
||||
|
||||
.Lslow_next_acc:
|
||||
clijh %r8,0,.Lslow_next_str /* There was a zero in last reject-part
|
||||
-> Add found index to current len
|
||||
and end. */
|
||||
vlbb %v17,16(%r5,%r3),6 /* Load next reject part. */
|
||||
aghi %r5,16 /* Increment current len of reject-string. */
|
||||
lcbb %r9,0(%r5,%r3),6 /* Get loaded byte count of reject-string. */
|
||||
jo .Lslow_next_acc_onbb /* Jump away if reject-string is
|
||||
on block-boundary. */
|
||||
.Lslow_next_acc_notonbb:
|
||||
vistrfs %v17,%v17 /* Fill with zeros after first zero. */
|
||||
jo .Lslow_loop_acc /* No zero found -> no preparation needed. */
|
||||
|
||||
.Lslow_next_acc_prepare_zero:
|
||||
/* Zero in reject-part: fill zeros with first-reject-character. */
|
||||
vlgvf %r8,%v17,0 /* Load first element of reject-part. */
|
||||
clije %r8,0,.Lslow_next_str /* Process next str-part if first
|
||||
character in this part of reject
|
||||
is a zero. */
|
||||
/* r8>0 -> zero found in this acc-part. */
|
||||
vrepf %v18,%v17,0 /* Replicate first char accross all chars. */
|
||||
vceqf %v22,%v20,%v17 /* Create a mask (v22) of null chars
|
||||
by comparing with 0 (v20). */
|
||||
vsel %v17,%v18,%v17,%v22 /* Replace null chars with first char. */
|
||||
j .Lslow_loop_acc /* Reject-string part is prepared. */
|
||||
|
||||
.Lslow_next_acc_onbb:
|
||||
nill %r9,65532 /* Recognize only fully loaded characters. */
|
||||
je .Lslow_next_acc_onbb2 /* Reload vr, if no full wchar_t
|
||||
loaded. */
|
||||
vfenezf %v18,%v17,%v17 /* Find zero in loaded bytes of reject part. */
|
||||
vlgvb %r8,%v18,7 /* Load byte index of zero. */
|
||||
clrjl %r8,%r9,.Lslow_next_acc_notonbb /* Found a zero in loaded bytes
|
||||
-> Prepare vreg. */
|
||||
.Lslow_next_acc_onbb2:
|
||||
vl %v17,0(%r5,%r3) /* Load over boundary ... */
|
||||
lghi %r8,0 /* r8=0 -> no zero in this part of acc,
|
||||
check for zero is in jump-target. */
|
||||
j .Lslow_next_acc_notonbb /* ... and search for zero in
|
||||
fully loaded vreg again. */
|
||||
|
||||
.Lslow_end_not_found:
|
||||
algfr %r1,%r6 /* Add zero-index to current len. */
|
||||
j .Lslow_end
|
||||
.Lslow_index_found:
|
||||
algfr %r1,%r4 /* Add found index of char to current len. */
|
||||
.Lslow_end:
|
||||
srlg %r2,%r1,2 /* Convert byte-count to character-count. */
|
||||
/* Restore registers. */
|
||||
vlgvg %r6,%v30,0
|
||||
vlgvg %r8,%v31,0
|
||||
vlgvg %r9,%v31,1
|
||||
br %r14
|
||||
.Lfallback:
|
||||
jg __wcscspn_c
|
||||
END(__wcscspn_vx)
|
||||
#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */
|
||||
27
sysdeps/s390/multiarch/wcscspn.c
Normal file
27
sysdeps/s390/multiarch/wcscspn.c
Normal file
@ -0,0 +1,27 @@
|
||||
/* Multiple versions of wcscspn.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#if defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)
|
||||
# include <wchar.h>
|
||||
# include <ifunc-resolve.h>
|
||||
|
||||
s390_vx_libc_ifunc2 (__wcscspn, wcscspn)
|
||||
|
||||
#else
|
||||
# include <wcsmbs/wcscspn.c>
|
||||
#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */
|
||||
@ -43,7 +43,8 @@ routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
|
||||
mbrtoc16 c16rtomb
|
||||
|
||||
strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \
|
||||
wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk
|
||||
wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk \
|
||||
wcscspn
|
||||
tests := tst-wcstof wcsmbs-tst1 tst-wcsnlen tst-btowc tst-mbrtowc \
|
||||
tst-wcrtomb tst-wcpncpy tst-mbsrtowcs tst-wchar-h tst-mbrtowc2 \
|
||||
tst-c16c32-1 wcsatcliff $(addprefix test-,$(strop-tests))
|
||||
|
||||
20
wcsmbs/test-wcscspn.c
Normal file
20
wcsmbs/test-wcscspn.c
Normal file
@ -0,0 +1,20 @@
|
||||
/* Test wcscspn functions.
|
||||
Copyright (C) 2015 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#define WIDE 1
|
||||
#include "../string/test-strcspn.c"
|
||||
@ -18,6 +18,9 @@
|
||||
|
||||
#include <wchar.h>
|
||||
|
||||
#ifdef WCSCSPN
|
||||
# define wcscspn WCSCSPN
|
||||
#endif
|
||||
|
||||
/* Return the length of the maximum initial segment
|
||||
of WCS which contains only wide-characters not in REJECT. */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user