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glibc.i686
0028-S390-Optimize-wmemset.patch
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File 0028-S390-Optimize-wmemset.patch of Package glibc.i686
2015-08-26 Stefan Liebler <stli@linux.vnet.ibm.com> * 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. Index: glibc-2.22/benchtests/Makefile =================================================================== --- glibc-2.22.orig/benchtests/Makefile +++ glibc-2.22/benchtests/Makefile @@ -38,7 +38,7 @@ string-bench := bcopy bzero memccpy memc strcoll wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \ wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn \ - wmemchr + wmemchr wmemset string-bench-all := $(string-bench) ${wcsmbs-bench} # We have to generate locales Index: glibc-2.22/benchtests/bench-memset.c =================================================================== --- glibc-2.22.orig/benchtests/bench-memset.c +++ glibc-2.22/benchtests/bench-memset.c @@ -20,12 +20,29 @@ #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 "bench-string.h" -char *simple_memset (char *, int, size_t); +#ifndef WIDE +# define MEMSET memset +# define CHAR char +# define SIMPLE_MEMSET simple_memset +# define MEMCMP memcmp +#else +# include <wchar.h> +# define MEMSET wmemset +# define CHAR wchar_t +# define SIMPLE_MEMSET simple_wmemset +# define MEMCMP wmemcmp +#endif /* WIDE */ + +CHAR *SIMPLE_MEMSET (CHAR *, int, size_t); #ifdef TEST_BZERO typedef void (*proto_t) (char *, size_t); @@ -39,7 +56,7 @@ IMPL (bzero, 1) void simple_bzero (char *s, size_t n) { - simple_memset (s, 0, n); + SIMPLE_MEMSET (s, 0, n); } void @@ -48,46 +65,50 @@ 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) { size_t i, iters = INNER_LOOP_ITERS; timing_t start, stop, cur; - 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; @@ -101,7 +122,7 @@ do_one_test (impl_t *impl, char *s, int CALL (impl, s, n); #else CALL (impl, s, c, n); -#endif +#endif /* !TEST_BZERO */ } TIMING_NOW (stop); @@ -114,13 +135,13 @@ 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; printf ("Length %4zd, alignment %2zd, c %2d:", len, align, c); FOR_EACH_IMPL (impl, 0) - do_one_test (impl, (char *) buf1 + align, c, len); + do_one_test (impl, (CHAR *) (buf1) + align, c, len); putchar ('\n'); } Index: glibc-2.22/benchtests/bench-wmemset.c =================================================================== --- /dev/null +++ glibc-2.22/benchtests/bench-wmemset.c @@ -0,0 +1,20 @@ +/* Measure wmemset 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 "bench-memset.c" Index: glibc-2.22/string/test-memset.c =================================================================== --- glibc-2.22.orig/string/test-memset.c +++ glibc-2.22/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) Index: glibc-2.22/sysdeps/s390/multiarch/Makefile =================================================================== --- glibc-2.22.orig/sysdeps/s390/multiarch/Makefile +++ glibc-2.22/sysdeps/s390/multiarch/Makefile @@ -37,5 +37,6 @@ sysdep_routines += wcslen wcslen-vx wcsl wcsspn wcsspn-vx wcsspn-c \ wcspbrk wcspbrk-vx wcspbrk-c \ wcscspn wcscspn-vx wcscspn-c \ - wmemchr wmemchr-vx wmemchr-c + wmemchr wmemchr-vx wmemchr-c \ + wmemset wmemset-vx wmemset-c endif Index: glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c =================================================================== --- glibc-2.22.orig/sysdeps/s390/multiarch/ifunc-impl-list.c +++ glibc-2.22/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -133,6 +133,7 @@ __libc_ifunc_impl_list (const char *name IFUNC_VX_IMPL (memccpy); + IFUNC_VX_IMPL (wmemset); #endif /* HAVE_S390_VX_ASM_SUPPORT */ return i; Index: glibc-2.22/sysdeps/s390/multiarch/wmemset-c.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wmemset-c.c @@ -0,0 +1,37 @@ +/* Default wmemset 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 WMEMSET __wmemset_c + +# include <wchar.h> +extern __typeof (__wmemset) __wmemset_c; +# undef weak_alias +# define weak_alias(name, alias) +# ifdef SHARED +# undef libc_hidden_def +# define libc_hidden_def(name) \ + __hidden_ver1 (__wmemset_c, __GI___wmemset, __wmemset_c); +# undef libc_hidden_weak +# define libc_hidden_weak(name) \ + strong_alias (__wmemset_c, __wmemset_c_1); \ + __hidden_ver1 (__wmemset_c_1, __GI_wmemset, __wmemset_c_1); +# endif /* SHARED */ + +# include <wcsmbs/wmemset.c> +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/wmemset-vx.S =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wmemset-vx.S @@ -0,0 +1,142 @@ +/* Vector Optimized 32/64 bit S/390 version of wmemset. + 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 + +/* wchar_t *wmemset(wchar_t *dest, wchar_t wc, size_t n) + Fill an array of wide-characters with a constant wide character + and returns dest. + + Register usage: + -r0=tmp + -r1=tmp + -r2=dest or current-pointer + -r3=wc + -r4=n + -r5=tmp + -v16=replicated wc + -v17,v18,v19=copy of v16 for vstm + -v31=saved dest for return +*/ +ENTRY(__wmemset_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + +# if !defined __s390x__ + llgfr %r4,%r4 +# endif /* !defined __s390x__ */ + + vlvgg %v31,%r2,0 /* Save destination pointer for return. */ + clgije %r4,0,.Lend + + vlvgf %v16,%r3,0 /* Generate vector with wchar_t wc. */ + vrepf %v16,%v16,0 + + /* Check range of maxlen and convert to byte-count. */ +# ifdef __s390x__ + tmhh %r4,49152 /* Test bit 0 or 1 of maxlen. */ + lghi %r5,-4 /* Max byte-count is 18446744073709551612. */ +# else + tmlh %r4,49152 /* Test bit 0 or 1 of maxlen. */ + llilf %r5,4294967292 /* Max byte-count is 4294967292. */ +# endif /* !__s390x__ */ + sllg %r4,%r4,2 /* Convert character-count to byte-count. */ + locgrne %r4,%r5 /* Use max byte-count, if bit 0/1 was one. */ + + /* Align dest to 16 byte. */ + risbg %r0,%r2,60,128+63,0 /* Test if s is aligned and + %r3 = bits 60-63 'and' 15. */ + je .Lpreloop /* If s is aligned, loop aligned. */ + tmll %r2,3 /* Test if s is 4-byte aligned? */ + jne .Lfallback /* And use common-code variant if not. */ + lghi %r1,16 + slr %r1,%r0 /* Compute byte count to load (16-x). */ + clgr %r1,%r4 + locgrh %r1,%r4 /* min (byte count, n) */ + aghik %r5,%r1,-1 /* vstl needs highest index. */ + vstl %v16,%r5,0(%r2) /* Store remaining bytes. */ + clgrje %r1,%r4,.Lend /* Return if n bytes where set. */ + slgr %r4,%r1 /* Compute remaining byte count. */ + la %r2,0(%r1,%r2) + +.Lpreloop: + /* Now we are 16-byte aligned. */ + clgijl %r4,17,.Lremaining + srlg %r1,%r4,8 /* Split into 256byte blocks */ + clgije %r1,0,.Lpreloop64 + vlr %v17,%v16 + vlr %v18,%v16 + vlr %v19,%v16 + +.Lloop256: + vstm %v16,%v19,0(%r2) + vstm %v16,%v19,64(%r2) + vstm %v16,%v19,128(%r2) + vstm %v16,%v19,192(%r2) + la %r2,256(%r2) + brctg %r1,.Lloop256 /* Loop until all blocks are processed. */ + + llgfr %r4,%r4 + nilf %r4,255 /* Get remaining bytes */ + je .Lend /* Skip store remaining bytes if zero. */ + +.Lpreloop64: + clgijl %r4,17,.Lremaining + clgijl %r4,33,.Lpreloop16 + srlg %r1,%r4,5 /* Split into 32byte blocks */ + +.Lloop32: + vst %v16,0(%r2) + vst %v16,16(%r2) + la %r2,32(%r2) + brctg %r1,.Lloop32 /* Loop until all blocks are processed. */ + + llgfr %r4,%r4 + nilf %r4,31 /* Get remaining bytes */ + je .Lend /* Skip store remaining bytes if zero. */ + +.Lpreloop16: + clgijl %r4,17,.Lremaining + srlg %r1,%r4,4 /* Split into 16byte blocks */ + +.Lloop16: + vst %v16,0(%r2) + la %r2,16(%r2) + brctg %r1,.Lloop16 /* Loop until all blocks are processed. */ + + llgfr %r4,%r4 + nilf %r4,15 /* Get remaining bytes */ + je .Lend /* Skip store remaining bytes if zero. */ + +.Lremaining: + aghi %r4,-1 /* vstl needs highest index. */ + vstl %v16,%r4,0(%r2) + +.Lend: + vlgvg %r2,%v31,0 /* Load saved dest for return value. */ + br %r14 +.Lfallback: + srlg %r4,%r4,2 /* Convert byte-count to character-count. */ + jg __wmemset_c +END(__wmemset_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */ Index: glibc-2.22/sysdeps/s390/multiarch/wmemset.c =================================================================== --- /dev/null +++ glibc-2.22/sysdeps/s390/multiarch/wmemset.c @@ -0,0 +1,29 @@ +/* Multiple versions of wmemset. + 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_ifunc (__wmemset) +weak_alias (__wmemset, wmemset) +libc_hidden_weak (wmemset) + +#else +# include <wcsmbs/wmemset.c> +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */ Index: glibc-2.22/wcsmbs/Makefile =================================================================== --- glibc-2.22.orig/wcsmbs/Makefile +++ glibc-2.22/wcsmbs/Makefile @@ -45,7 +45,7 @@ routines := wcscat wcschr wcscmp wcscpy strop-tests := wcscmp wcsncmp wmemcmp wcslen wcschr wcsrchr wcscpy wcsnlen \ wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk \ - wcscspn wmemchr + wcscspn wmemchr wmemset 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)) Index: glibc-2.22/wcsmbs/test-wmemset.c =================================================================== --- /dev/null +++ glibc-2.22/wcsmbs/test-wmemset.c @@ -0,0 +1,20 @@ +/* Test wmemset 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-memset.c" Index: glibc-2.22/wcsmbs/wmemset.c =================================================================== --- glibc-2.22.orig/wcsmbs/wmemset.c +++ glibc-2.22/wcsmbs/wmemset.c @@ -18,6 +18,9 @@ #include <wchar.h> +#ifdef WMEMSET +# define __wmemset WMEMSET +#endif wchar_t * __wmemset (s, c, n)
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