S390: Optimize strpbrk and wcspbrk.

This patch provides optimized versions of strpbrk and wcspbrk with the z13
vector instructions.

ChangeLog:

	* sysdeps/s390/multiarch/strpbrk-c.c: New File.
	* sysdeps/s390/multiarch/strpbrk-vx.S: Likewise.
	* sysdeps/s390/multiarch/strpbrk.c: Likewise.
	* sysdeps/s390/multiarch/wcspbrk-c.c: Likewise.
	* sysdeps/s390/multiarch/wcspbrk-vx.S: Likewise.
	* sysdeps/s390/multiarch/wcspbrk.c: Likewise.
	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strpbrk and
	wcspbrk functions.
	* sysdeps/s390/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Add ifunc test for strpbrk, wcspbrk.
	* wcsmbs/wcspbrk.c: Use WCSPBRK if defined.
	* string/test-strpbrk.c: Add wcspbrk support.
	* wcsmbs/test-wcspbrk.c: New File.
	* wcsmbs/Makefile (strop-tests): Add wcspbrk.
	* benchtests/bench-strpbrk.c: Add wcspbrk support.
	* benchtests/bench-wcspbrk.c: New File.
	* benchtests/Makefile (wcsmbs-bench): Add wcspbrk.

ChangeLog

@@ -1,3 +1,23 @@
+2015-08-26  Stefan Liebler  <stli@linux.vnet.ibm.com>
+
+	* sysdeps/s390/multiarch/strpbrk-c.c: New File.
+	* sysdeps/s390/multiarch/strpbrk-vx.S: Likewise.
+	* sysdeps/s390/multiarch/strpbrk.c: Likewise.
+	* sysdeps/s390/multiarch/wcspbrk-c.c: Likewise.
+	* sysdeps/s390/multiarch/wcspbrk-vx.S: Likewise.
+	* sysdeps/s390/multiarch/wcspbrk.c: Likewise.
+	* sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strpbrk and
+	wcspbrk functions.
+	* sysdeps/s390/multiarch/ifunc-impl-list.c
+	(__libc_ifunc_impl_list): Add ifunc test for strpbrk, wcspbrk.
+	* wcsmbs/wcspbrk.c: Use WCSPBRK if defined.
+	* string/test-strpbrk.c: Add wcspbrk support.
+	* wcsmbs/test-wcspbrk.c: New File.
+	* wcsmbs/Makefile (strop-tests): Add wcspbrk.
+	* benchtests/bench-strpbrk.c: Add wcspbrk support.
+	* benchtests/bench-wcspbrk.c: New File.
+	* benchtests/Makefile (wcsmbs-bench): Add wcspbrk.
+
 2015-08-26  Stefan Liebler  <stli@linux.vnet.ibm.com>
 
 	* sysdeps/s390/multiarch/strspn-c.c: New File.

benchtests/Makefile

@@ -37,7 +37,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
 		strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok \
 		strcoll
 wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \
-		wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn
+		wcscmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk
 string-bench-all := $(string-bench) ${wcsmbs-bench}
 
 # We have to generate locales

benchtests/bench-strpbrk.c

@@ -16,50 +16,80 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef WIDE
+# define CHAR char
+# define STRLEN strlen
+# define STRCHR strchr
+# define BIG_CHAR CHAR_MAX
+# define SMALL_CHAR 127
+#else
+# include <wchar.h>
+# define CHAR wchar_t
+# define STRLEN wcslen
+# define STRCHR wcschr
+# define BIG_CHAR WCHAR_MAX
+# define SMALL_CHAR 1273
+#endif /* WIDE */
+
 #ifndef STRPBRK_RESULT
 # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
-# define RES_TYPE char *
+# define RES_TYPE CHAR *
 # define TEST_MAIN
-# define TEST_NAME "strpbrk"
+# ifndef WIDE
+#  define TEST_NAME "strpbrk"
+# else
+#  define TEST_NAME "wcspbrk"
+# endif /* WIDE */
 # include "bench-string.h"
 
-typedef char *(*proto_t) (const char *, const char *);
+# ifndef WIDE
-char *simple_strpbrk (const char *, const char *);
+#  define STRPBRK strpbrk
-char *stupid_strpbrk (const char *, const char *);
+#  define SIMPLE_STRPBRK simple_strpbrk
+#  define STUPID_STRPBRK stupid_strpbrk
+# else
+#  include <wchar.h>
+#  define STRPBRK wcspbrk
+#  define SIMPLE_STRPBRK simple_wcspbrk
+#  define STUPID_STRPBRK stupid_wcspbrk
+# endif /* WIDE */
 
-IMPL (stupid_strpbrk, 0)
+typedef CHAR *(*proto_t) (const CHAR *, const CHAR *);
-IMPL (simple_strpbrk, 0)
+CHAR *SIMPLE_STRPBRK (const CHAR *, const CHAR *);
-IMPL (strpbrk, 1)
+CHAR *STUPID_STRPBRK (const CHAR *, const CHAR *);
 
-char *
+IMPL (STUPID_STRPBRK, 0)
-simple_strpbrk (const char *s, const char *rej)
+IMPL (SIMPLE_STRPBRK, 0)
+IMPL (STRPBRK, 1)
+
+CHAR *
+SIMPLE_STRPBRK (const CHAR *s, const CHAR *rej)
 {
-  const char *r;
+  const CHAR *r;
-  char c;
+  CHAR c;
 
   while ((c = *s++) != '\0')
     for (r = rej; *r != '\0'; ++r)
       if (*r == c)
-	return (char *) s - 1;
+	return (CHAR *) s - 1;
   return NULL;
 }
 
-char *
+CHAR *
-stupid_strpbrk (const char *s, const char *rej)
+STUPID_STRPBRK (const CHAR *s, const CHAR *rej)
 {
-  size_t ns = strlen (s), nrej = strlen (rej);
+  size_t ns = STRLEN (s), nrej = STRLEN (rej);
   size_t i, j;
 
   for (i = 0; i < ns; ++i)
     for (j = 0; j < nrej; ++j)
       if (s[i] == rej[j])
-	return (char *) s + i;
+	return (CHAR *) s + i;
   return NULL;
 }
-#endif
+#endif /* !STRPBRK_RESULT */
 
 static void
-do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
+do_one_test (impl_t *impl, const CHAR *s, const CHAR *rej, RES_TYPE exp_res)
 {
   RES_TYPE res = CALL (impl, s, rej);
   size_t i, iters = INNER_LOOP_ITERS;
@@ -91,35 +121,35 @@ do_test (size_t align, size_t pos, size_t len)
   size_t i;
   int c;
   RES_TYPE result;
-  char *rej, *s;
+  CHAR *rej, *s;
 
   align &= 7;
-  if (align + pos + 10 >= page_size || len > 240)
+  if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240)
     return;
 
-  rej = (char *) (buf2 + (random () & 255));
+  rej = (CHAR *) (buf2) + (random () & 255);
-  s = (char *) (buf1 + align);
+  s = (CHAR *) (buf1) + align;
 
   for (i = 0; i < len; ++i)
     {
-      rej[i] = random () & 255;
+      rej[i] = random () & BIG_CHAR;
       if (!rej[i])
-	rej[i] = random () & 255;
+	rej[i] = random () & BIG_CHAR;
       if (!rej[i])
-	rej[i] = 1 + (random () & 127);
+	rej[i] = 1 + (random () & SMALL_CHAR);
     }
   rej[len] = '\0';
-  for (c = 1; c <= 255; ++c)
+  for (c = 1; c <= BIG_CHAR; ++c)
-    if (strchr (rej, c) == NULL)
+    if (STRCHR (rej, c) == NULL)
       break;
 
   for (i = 0; i < pos; ++i)
     {
-      s[i] = random () & 255;
+      s[i] = random () & BIG_CHAR;
-      if (strchr (rej, s[i]))
+      if (STRCHR (rej, s[i]))
 	{
-	  s[i] = random () & 255;
+	  s[i] = random () & BIG_CHAR;
-	  if (strchr (rej, s[i]))
+	  if (STRCHR (rej, s[i]))
 	    s[i] = c;
 	}
     }
@@ -127,7 +157,7 @@ do_test (size_t align, size_t pos, size_t len)
   if (s[pos])
     {
       for (i = pos + 1; i < pos + 10; ++i)
-	s[i] = random () & 255;
+	s[i] = random () & BIG_CHAR;
       s[i] = '\0';
     }
   result = STRPBRK_RESULT (s, pos);

benchtests/bench-wcspbrk.c

@@ -0,0 +1,20 @@
+/* Measure wcspbrk 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-strpbrk.c"

string/test-strpbrk.c

@@ -17,50 +17,82 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef WIDE
+# define CHAR char
+# define UCHAR unsigned char
+# define STRLEN strlen
+# define STRCHR strchr
+# define BIG_CHAR CHAR_MAX
+# define SMALL_CHAR 127
+#else
+# include <wchar.h>
+# define CHAR wchar_t
+# define UCHAR wchar_t
+# define STRLEN wcslen
+# define STRCHR wcschr
+# define BIG_CHAR WCHAR_MAX
+# define SMALL_CHAR 1273
+#endif /* WIDE */
+
 #ifndef STRPBRK_RESULT
 # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
-# define RES_TYPE char *
+# define RES_TYPE CHAR *
 # define TEST_MAIN
-# define TEST_NAME "strpbrk"
+# ifndef WIDE
+#  define TEST_NAME "strpbrk"
+# else
+#  define TEST_NAME "wcspbrk"
+# endif /* WIDE */
 # include "test-string.h"
 
-typedef char *(*proto_t) (const char *, const char *);
+# ifndef WIDE
-char *simple_strpbrk (const char *, const char *);
+#  define STRPBRK strpbrk
-char *stupid_strpbrk (const char *, const char *);
+#  define SIMPLE_STRPBRK simple_strpbrk
+#  define STUPID_STRPBRK stupid_strpbrk
+# else
+#  include <wchar.h>
+#  define STRPBRK wcspbrk
+#  define SIMPLE_STRPBRK simple_wcspbrk
+#  define STUPID_STRPBRK stupid_wcspbrk
+# endif /* WIDE */
 
-IMPL (stupid_strpbrk, 0)
+typedef CHAR *(*proto_t) (const CHAR *, const CHAR *);
-IMPL (simple_strpbrk, 0)
+CHAR *SIMPLE_STRPBRK (const CHAR *, const CHAR *);
-IMPL (strpbrk, 1)
+CHAR *STUPID_STRPBRK (const CHAR *, const CHAR *);
 
-char *
+IMPL (STUPID_STRPBRK, 0)
-simple_strpbrk (const char *s, const char *rej)
+IMPL (SIMPLE_STRPBRK, 0)
+IMPL (STRPBRK, 1)
+
+CHAR *
+SIMPLE_STRPBRK (const CHAR *s, const CHAR *rej)
 {
-  const char *r;
+  const CHAR *r;
-  char c;
+  CHAR c;
 
   while ((c = *s++) != '\0')
     for (r = rej; *r != '\0'; ++r)
       if (*r == c)
-	return (char *) s - 1;
+	return (CHAR *) s - 1;
   return NULL;
 }
 
-char *
+CHAR *
-stupid_strpbrk (const char *s, const char *rej)
+STUPID_STRPBRK (const CHAR *s, const CHAR *rej)
 {
-  size_t ns = strlen (s), nrej = strlen (rej);
+  size_t ns = STRLEN (s), nrej = STRLEN (rej);
   size_t i, j;
 
   for (i = 0; i < ns; ++i)
     for (j = 0; j < nrej; ++j)
       if (s[i] == rej[j])
-	return (char *) s + i;
+	return (CHAR *) s + i;
   return NULL;
 }
-#endif
+#endif /* !STRPBRK_RESULT */
 
 static void
-do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
+do_one_test (impl_t *impl, const CHAR *s, const CHAR *rej, RES_TYPE exp_res)
 {
   RES_TYPE res = CALL (impl, s, rej);
   if (res != exp_res)
@@ -78,35 +110,35 @@ do_test (size_t align, size_t pos, size_t len)
   size_t i;
   int c;
   RES_TYPE result;
-  char *rej, *s;
+  CHAR *rej, *s;
 
   align &= 7;
-  if (align + pos + 10 >= page_size || len > 240)
+  if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240)
     return;
 
-  rej = (char *) (buf2 + (random () & 255));
+  rej = (CHAR *) (buf2) + (random () & 255);
-  s = (char *) (buf1 + align);
+  s = (CHAR *) (buf1) + align;
 
   for (i = 0; i < len; ++i)
     {
-      rej[i] = random () & 255;
+      rej[i] = random () & BIG_CHAR;
       if (!rej[i])
-	rej[i] = random () & 255;
+	rej[i] = random () & BIG_CHAR;
       if (!rej[i])
-	rej[i] = 1 + (random () & 127);
+	rej[i] = 1 + (random () & SMALL_CHAR);
     }
   rej[len] = '\0';
-  for (c = 1; c <= 255; ++c)
+  for (c = 1; c <= BIG_CHAR; ++c)
-    if (strchr (rej, c) == NULL)
+    if (STRCHR (rej, c) == NULL)
       break;
 
   for (i = 0; i < pos; ++i)
     {
-      s[i] = random () & 255;
+      s[i] = random () & BIG_CHAR;
-      if (strchr (rej, s[i]))
+      if (STRCHR (rej, s[i]))
 	{
-	  s[i] = random () & 255;
+	  s[i] = random () & BIG_CHAR;
-	  if (strchr (rej, s[i]))
+	  if (STRCHR (rej, s[i]))
 	    s[i] = c;
 	}
     }
@@ -114,7 +146,7 @@ do_test (size_t align, size_t pos, size_t len)
   if (s[pos])
     {
       for (i = pos + 1; i < pos + 10; ++i)
-	s[i] = random () & 255;
+	s[i] = random () & BIG_CHAR;
       s[i] = '\0';
     }
   result = STRPBRK_RESULT (s, pos);
@@ -129,8 +161,8 @@ do_random_tests (void)
   size_t i, j, n, align, pos, len, rlen;
   RES_TYPE result;
   int c;
-  unsigned char *p = buf1 + page_size - 512;
+  UCHAR *p = (UCHAR *) (buf1 + page_size) - 512;
-  unsigned char *rej;
+  UCHAR *rej;
 
   for (n = 0; n < ITERATIONS; n++)
     {
@@ -147,18 +179,18 @@ do_random_tests (void)
 	rlen = random () & 63;
       else
 	rlen = random () & 15;
-      rej = buf2 + page_size - rlen - 1 - (random () & 7);
+      rej = (UCHAR *) (buf2 + page_size) - rlen - 1 - (random () & 7);
       for (i = 0; i < rlen; ++i)
 	{
-	  rej[i] = random () & 255;
+	  rej[i] = random () & BIG_CHAR;
 	  if (!rej[i])
-	    rej[i] = random () & 255;
+	    rej[i] = random () & BIG_CHAR;
 	  if (!rej[i])
-	    rej[i] = 1 + (random () & 127);
+	    rej[i] = 1 + (random () & SMALL_CHAR);
 	}
       rej[i] = '\0';
-      for (c = 1; c <= 255; ++c)
+      for (c = 1; c <= BIG_CHAR; ++c)
-	if (strchr ((char *) rej, c) == NULL)
+	if (STRCHR ((CHAR *) rej, c) == NULL)
 	  break;
       j = (pos > len ? pos : len) + align + 64;
       if (j > 512)
@@ -171,27 +203,27 @@ do_random_tests (void)
 	  else if (i == pos + align)
 	    p[i] = rej[random () % (rlen + 1)];
 	  else if (i < align || i > pos + align)
-	    p[i] = random () & 255;
+	    p[i] = random () & BIG_CHAR;
 	  else
 	    {
-	      p[i] = random () & 255;
+	      p[i] = random () & BIG_CHAR;
-	      if (strchr ((char *) rej, p[i]))
+	      if (STRCHR ((CHAR *) rej, p[i]))
 		{
-		  p[i] = random () & 255;
+		  p[i] = random () & BIG_CHAR;
-		  if (strchr ((char *) rej, p[i]))
+		  if (STRCHR ((CHAR *) rej, p[i]))
 		    p[i] = c;
 		}
 	    }
 	}
 
-      result = STRPBRK_RESULT ((char *) (p + align), pos < len ? pos : len);
+      result = STRPBRK_RESULT ((CHAR *) (p + align), pos < len ? pos : len);
 
       FOR_EACH_IMPL (impl, 1)
-	if (CALL (impl, (char *) (p + align), (char *) rej) != result)
+	if (CALL (impl, (CHAR *) (p + align), (CHAR *) rej) != result)
 	  {
 	    error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",
 		   n, impl->name, align, rej, rlen, pos, len,
-		   (void *) CALL (impl, (char *) (p + align), (char *) rej),
+		   (void *) CALL (impl, (CHAR *) (p + align), (CHAR *) rej),
 		   (void *) result);
 	    ret = 1;
 	  }

sysdeps/s390/multiarch/Makefile

@@ -12,7 +12,8 @@ sysdep_routines += strlen strlen-vx strlen-c \
 		   strchr strchr-vx strchr-c \
 		   strchrnul strchrnul-vx strchrnul-c \
 		   strrchr strrchr-vx strrchr-c \
-		   strspn strspn-vx strspn-c
+		   strspn strspn-vx strspn-c \
+		   strpbrk strpbrk-vx strpbrk-c
 endif
 
 ifeq ($(subdir),wcsmbs)
@@ -29,5 +30,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \
 		   wcschr wcschr-vx wcschr-c \
 		   wcschrnul wcschrnul-vx wcschrnul-c \
 		   wcsrchr wcsrchr-vx wcsrchr-c \
-		   wcsspn wcsspn-vx wcsspn-c
+		   wcsspn wcsspn-vx wcsspn-c \
+		   wcspbrk wcspbrk-vx wcspbrk-c
 endif

sysdeps/s390/multiarch/ifunc-impl-list.c

@@ -121,6 +121,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
   IFUNC_VX_IMPL (strspn);
   IFUNC_VX_IMPL (wcsspn);
 
+  IFUNC_VX_IMPL (strpbrk);
+  IFUNC_VX_IMPL (wcspbrk);
+
 #endif /* HAVE_S390_VX_ASM_SUPPORT */
 
   return i;

sysdeps/s390/multiarch/strpbrk-c.c

@@ -0,0 +1,28 @@
+/* Default strpbrk 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 STRPBRK  __strpbrk_c
+# ifdef SHARED
+#  undef libc_hidden_builtin_def
+#  define libc_hidden_builtin_def(name)				\
+     __hidden_ver1 (__strpbrk_c, __GI_strpbrk, __strpbrk_c);
+# endif /* SHARED */
+
+# include <string/strpbrk.c>
+#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */

sysdeps/s390/multiarch/strpbrk-vx.S

@@ -0,0 +1,302 @@
+/* Vector optimized 32/64 bit S/390 version of strpbrk.
+   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
+
+/* char *strpbrk (const char *s, const char * accept)
+   The  strpbrk()  function locates the first occurrence in the string s
+   of any of the characters in the string accept and returns a pointer
+   to that character or NULL if not found.
+
+   This method checks the length of accept 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 accept-string
+   r2:  pointer to start of search-string
+   r0:  loaded byte count of vlbb search-string (32bit unsigned)
+   r4:  found byte index (32bit unsigned)
+   r1:  current return len (64bit unsigned)
+   v16: search-string
+   v17: accept-string
+   v18: temp-vreg
+
+   ONLY FOR SLOW:
+   v19: first accept-string
+   v20: zero for preparing acc-vector
+   v21: global mask; 1 indicates a match between
+	search-string-vreg and any accept-character
+   v22: current mask; 1 indicates a match between
+	search-string-vreg and any accept-character in current acc-vreg
+   v24: one for result-checking of former string-part
+   v30, v31: for re-/storing registers r6, r8, r9
+   r5:  current len of accept-string
+   r6:  zero-index in search-string or 16 if no zero
+	or min(zero-index, loaded byte count)
+   r8:  >0, if former accept-string-part contains a zero,
+	otherwise =0;
+   r9:  loaded byte count of vlbb accept-string
+*/
+ENTRY(__strpbrk_vx)
+	.machine "z13"
+	.machinemode "zarch_nohighgprs"
+
+	/*
+	  Check if accept-string fits in one vreg:
+	  ----------------------------------------
+	*/
+	vlbb	%v17,0(%r3),6	/* Load accept.  */
+	lghi	%r1,0		/* Zero out current len.  */
+	vlgvb	%r0,%v17,0	/* Get first element.  */
+	clije	%r0,0,.Lfast_end_null /* Return null if accept is empty.  */
+	lcbb	%r0,0(%r3),6
+	jo	.Lcheck_onbb	/* Special case if accept lays
+				   on block-boundary.  */
+.Lcheck_notonbb:
+	vistrbs	%v17,%v17	/* Fill with zeros after first zero.  */
+	je	.Lfast		/* Zero found -> accept fits in one vreg.  */
+	j	.Lslow		/* No zero -> accept exceeds one vreg  */
+
+
+.Lcheck_onbb:
+	/* Accept lays on block-boundary.  */
+	vfenezb	%v18,%v17,%v17	/* Search zero in loaded accept bytes.  */
+	vlgvb	%r4,%v18,7	/* Get index of zero or 16 if not found.  */
+	clrjl	%r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count ->
+					    Accept fits in one vreg;
+					    Fill with zeros and proceed
+					    with FAST.  */
+	vl	%v17,0(%r3)	/* Load accept, which exceeds loaded bytes.  */
+	j	.Lcheck_notonbb /* Check if accept fits in one vreg.  */
+
+
+	/*
+	  Search s for accept in one vreg
+	  -------------------------------
+	*/
+.Lfast:
+	/* Complete accept-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.  */
+
+	vfaezbs	%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.  */
+	/* If found index is within loaded bytes, return with found
+	   element index (=equal count).  */
+	clrjl	%r4,%r0,.Lfast_loop_found2
+
+	/* 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.  */
+	vfaezbs	%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)
+	vfaezbs	%v18,%v16,%v17,0
+	jno	.Lfast_loop_found16
+
+	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 accept
+				   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.  */
+.Lfast_loop_found2:
+	vlgvb	%r0,%v16,0(%r4)	/* Get found element.  */
+	clije	%r0,0,.Lfast_end_null /* Return null if no accept-char found */
+	algfr	%r1,%r4		/* Add found index of char to current len.  */
+	la	%r2,0(%r1,%r2)	/* And return pointer to first equal char.  */
+	br	%r14
+
+.Lfast_end_null:
+	lghi	%r2,0		/* Return null if no character is equal.  */
+	br	%r14
+
+
+
+
+	/*
+	  Search s for accept in multiple vregs
+	  -------------------------------------
+	*/
+.Lslow:
+	/* Save registers.  */
+	vlvgg	%v30,%r6,0
+	vlvgp	%v31,%r8,%r9
+
+	/* accept 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.  */
+
+	/* 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 accept-string to zero.  */
+	vfenezb	%v18,%v16,%v16	/* Find zero in current string-part.  */
+	lghi	%r8,0		/* There is no zero in first accept-part.  */
+	vlgvb	%r6,%v18,7	/* Load byte index of zero or 16 if no zero.  */
+	clije	%r6,0,.Lslow_end_null /* If first element is zero
+					  (end of string) -> return null */
+	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 if no match.  */
+	/* 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_null
+	/* All elements are zero (=no match) -> proceed with next str-part.  */
+
+	vlr	%v17,%v19	/* Load first part of accept (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 accept to zero.  */
+	vfenezb	%v18,%v16,%v16	/* Find zero in current string-part.  */
+	lghi	%r8,0		/* There is no zero in first accept-part.  */
+	vlgvb	%r6,%v18,7	/* Load byte index of zero or 16 if no zero.  */
+	clije	%r6,0,.Lslow_end_null /* If first element is zero
+					  (end of string) -> return null.  */
+
+.Lslow_loop_acc:
+	vfaeb	%v22,%v16,%v17,4 /* Create matching-mask (1 in mask ->
+				    Character matches any accepted character in
+				    this accept-string-part) IN=0, RT=1.  */
+	vlgvb	%r4,%v22,0	/* Get result of first element.  */
+	/* First element is equal to any accepted characters
+	   (all other parts of accept cannot lead to a match before this one)
+	   -> current len is pointing to first element
+	   -> return found  */
+	clijh	%r4,0,.Lslow_end_found
+	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 the last acc-part
+					  -> add index to current_len and
+					     end.  */
+	vlbb	%v17,16(%r5,%r3),6 /* Load next accept part.  */
+	aghi	%r5,16		/* Increment current len of accept-string.  */
+	lcbb	%r9,0(%r5,%r3),6 /* Get loaded byte count of accept-string.  */
+	jo	.Lslow_next_acc_onbb /* Jump away ifaccept-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 accept-part: fill zeros with first-accept-character.  */
+	vlgvb	%r8,%v17,0	/* Load first element of acc-part.  */
+	clije	%r8,0,.Lslow_next_str /* Proceed with next string-part,
+					  if first char in this part of accept
+					  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 /* Accept part is prepared -> process.  */
+
+.Lslow_next_acc_onbb:
+	vfenezb	%v18,%v17,%v17	/* Find zero in loaded bytes of accept 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_null:
+	lghi	%r1,0		/* Return null if no character is equal.  */
+	j	.Lslow_end
+
+.Lslow_loop_found:
+	vlgvb	%r4,%v18,7	/* Load byte index of found element.  */
+	vlgvb	%r0,%v16,0(%r4)	/* Get found element.  */
+	clije	%r0,0,.Lslow_end_null /* Return null if no acc-char found.  */
+
+.Lslow_index_found:
+	algfr	%r1,%r4		/* Add found index of char to current len.  */
+.Lslow_end_found:
+	la	%r1,0(%r1,%r2)	/* And return pointer to first equal char.  */
+
+.Lslow_end:
+	/* Restore registers.  */
+	vlgvg	%r6,%v30,0
+	vlgvg	%r8,%v31,0
+	vlgvg	%r9,%v31,1
+	lgr	%r2,%r1
+	br	%r14
+END(__strpbrk_vx)
+#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */

sysdeps/s390/multiarch/strpbrk.c

@@ -0,0 +1,27 @@
+/* Multiple versions of strpbrk.
+   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 (__strpbrk, strpbrk)
+
+#else
+# include <string/strpbrk.c>
+#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */

sysdeps/s390/multiarch/wcspbrk-c.c

@@ -0,0 +1,31 @@
+/* Default wcspbrk 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 WCSPBRK  __wcspbrk_c
+
+# include <wchar.h>
+extern __typeof (wcspbrk) __wcspbrk_c;
+# ifdef SHARED
+#  undef libc_hidden_def
+#  define libc_hidden_def(name)				\
+  __hidden_ver1 (__wcspbrk_c, __GI_wcspbrk, __wcspbrk_c);
+# endif /* SHARED */
+
+# include <wcsmbs/wcspbrk.c>
+#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */

sysdeps/s390/multiarch/wcspbrk-vx.S

@@ -0,0 +1,315 @@
+/* Vector optimized 32/64 bit S/390 version of wcspbrk.
+   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 *wcspbrk (const wchar_t *s, const wchar_t * accept)
+   The  wcspbrk()  function locates the first occurrence in the string s
+   of any of the characters in the string accept and returns a pointer
+   to that character or NULL if not found.
+
+   This method checks the length of accept 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 accept-string
+   r2:  pointer to start of search-string
+   r0:  loaded byte count of vlbb search-string (32bit unsigned)
+   r4:  found byte index (32bit unsigned)
+   r1:  current return len (64bit unsigned)
+   v16: search-string
+   v17: accept-string
+   v18: temp-vreg
+
+   ONLY FOR SLOW:
+   v19: first accept-string
+   v20: zero for preparing acc-vector
+   v21: global mask; 1 indicates a match between
+	search-string-vreg and any accept-character
+   v22: current mask; 1 indicates a match between
+	search-string-vreg and any accept-character in current acc-vreg
+   v24: one for result-checking of former string-part
+   v30, v31: for re-/storing registers r6, r8, r9
+   r5:  current len of accept-string
+   r6:  zero-index in search-string or 16 if no zero
+	or min(zero-index, loaded byte count)
+   r8:  >0, if former accept-string-part contains a zero,
+	otherwise =0;
+   r9:  loaded byte count of vlbb accept-string
+*/
+ENTRY(__wcspbrk_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 accept-string fits in one vreg:
+	  ----------------------------------------
+	*/
+	vlbb	%v17,0(%r3),6	/* Load accept.  */
+	lcbb	%r0,0(%r3),6
+	jo	.Lcheck_onbb	/* Special case if accept lays
+				   on block-boundary.  */
+
+.Lcheck_notonbb:
+	lghi	%r1,0		/* Zero out current len.  */
+	vlgvf	%r0,%v17,0	/* Get first element.  */
+	clije	%r0,0,.Lfast_end_null /* Return null if accept is empty.  */
+
+	vistrfs	%v17,%v17	/* Fill with zeros after first zero.  */
+	je	.Lfast		/* Zero found -> accept fits in one vreg.  */
+	j	.Lslow		/* No zero -> accept exceeds one vreg  */
+
+
+.Lcheck_onbb:
+	/* Accept 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 accept bytes.  */
+	vlgvb	%r4,%v18,7	/* Get index of zero or 16 if not found.  */
+	clrjl	%r4,%r0,.Lcheck_notonbb /* Zero index < loaded bytes count ->
+					    accept fits in one vreg;
+					    Fill with zeros and proceed
+					    with FAST.  */
+.Lcheck_onbb2:
+	vl	%v17,0(%r3)	/* Load accept, which exceeds loaded bytes.  */
+	j	.Lcheck_notonbb /* Check if accept fits in one vreg.  */
+
+
+	/*
+	  Search s for accept in one vreg
+	  -------------------------------
+	*/
+.Lfast:
+	/* Complete accept-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.  */
+	/* If found index is within loaded bytes, return with found
+	   element index (=equal count).  */
+	clrjl	%r4,%r0,.Lfast_loop_found2
+
+	/* 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.  */
+
+.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 accept
+				   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.  */
+.Lfast_loop_found2:
+	srlg	%r5,%r4,2	/* Convert byte-index to character-index.  */
+	vlgvf	%r0,%v16,0(%r5)	/* Get found element.  */
+	clije	%r0,0,.Lfast_end_null /* Return null if no accept-char found */
+	algfr	%r1,%r4		/* Add found index of char to current len.  */
+	la	%r2,0(%r1,%r2)	/* And return pointer to first equal char.  */
+	br	%r14
+
+.Lfast_end_null:
+	lghi	%r2,0		/* Return null if no character is equal.  */
+	br	%r14
+
+
+
+
+	/*
+	  Search s for accept in multiple vregs
+	  -------------------------------------
+	*/
+.Lslow:
+	/* Save registers.  */
+	vlvgg	%v30,%r6,0
+	vlvgp	%v31,%r8,%r9
+
+	/* Accept 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.  */
+
+	/* 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;
+				   needs highest index, left bytes are 0.  */
+	ahi	%r0,1		/* Work with loaded byte count.  */
+	vzero	%v21		/* Zero out global mask.  */
+	lghi	%r5,0		/* Set current len of accept-string to zero.  */
+	vfenezf	%v18,%v16,%v16	/* Find zero in current string-part.  */
+	lghi	%r8,0		/* There is no zero in first accept-part.  */
+	vlgvb	%r6,%v18,7	/* Load byte index of zero or 16 if no zero.  */
+	clije	%r6,0,.Lslow_end_null /* If first element is zero
+					  (end of string) -> return null */
+	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 if no match.  */
+	/* 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_null
+	/* All elements are zero (=no match) -> proceed with next str-part.  */
+
+	vlr	%v17,%v19	/* Load first part of accept (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 accept to zero.  */
+	vfenezf	%v18,%v16,%v16	/* Find zero in current string-part.  */
+	lghi	%r8,0		/* There is no zero in first accept-part.  */
+	vlgvb	%r6,%v18,7	/* Load byte index of zero or 16 if no zero.  */
+	clije	%r6,0,.Lslow_end_null /* If first element is zero
+					  (end of string) -> return null.  */
+
+.Lslow_loop_acc:
+	vfaef	%v22,%v16,%v17,4 /* Create matching-mask (1 in mask ->
+				    Character matches any accepted character in
+				    this accept-string-part) IN=0, RT=1.  */
+	vlgvf	%r4,%v22,0	/* Get result of first element.  */
+	/* First element is equal to any accepted characters
+	   (all other parts of accept cannot lead to a match before this one)
+	   -> current len is pointing to first element
+	   -> return found */
+	clijh	%r4,0,.Lslow_end_found
+	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 the last acc-part
+					  -> add index to current len and
+					     end.  */
+	vlbb	%v17,16(%r5,%r3),6 /* Load next accept part.  */
+	aghi	%r5,16		/* Increment current len of accept-string.  */
+	lcbb	%r9,0(%r5,%r3),6 /* Get loaded byte count of accept-string.  */
+	jo	.Lslow_next_acc_onbb /* Jump away ifaccept-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 accept-part: fill zeros with first-accept-character.  */
+	vlgvf	%r8,%v17,0	/* Load first element of acc-part.  */
+	clije	%r8,0,.Lslow_next_str /* Proceed with next string-part,
+					  If first char in this part of accept
+					  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 /* Accept part is prepared -> process.  */
+
+.Lslow_next_acc_onbb:
+	nill	%r9,65532	/* Recognize only fully loaded characters.  */
+	je	.Lslow_next_acc_onbb2 /* Reload vr, if no full wchar_t.  */
+	vfenezf	%v18,%v17,%v17	/* Find zero in loaded bytes of accept 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_null:
+	lghi	%r1,0		/* Return null if no character is equal.  */
+	j	.Lslow_end
+
+.Lslow_loop_found:
+	vlgvb	%r4,%v18,7	/* Load byte index of found element.  */
+	srlg	%r5,%r4,2	/* Convert byte-index to character-index.  */
+	vlgvf	%r0,%v16,0(%r5)	/* Get found element.  */
+	clije	%r0,0,.Lslow_end_null /* Return null if no acc-char found.  */
+
+.Lslow_index_found:
+	algfr	%r1,%r4		/* Add found index of char to current len.  */
+.Lslow_end_found:
+	la	%r1,0(%r1,%r2)	/* And return pointer to first equal char.  */
+
+.Lslow_end:
+	/* Restore registers.  */
+	vlgvg	%r6,%v30,0
+	vlgvg	%r8,%v31,0
+	vlgvg	%r9,%v31,1
+	lgr	%r2,%r1
+	br	%r14
+.Lfallback:
+	jg	__wcspbrk_c
+END(__wcspbrk_vx)
+#endif /* HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc) */

sysdeps/s390/multiarch/wcspbrk.c

@@ -0,0 +1,27 @@
+/* Multiple versions of wcspbrk.
+   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 (__wcspbrk, wcspbrk)
+
+#else
+# include <wcsmbs/wcspbrk.c>
+#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && IS_IN (libc)) */

wcsmbs/Makefile

@@ -43,7 +43,7 @@ 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
+		wcpcpy wcsncpy wcpncpy wcscat wcsncat wcschrnul wcsspn wcspbrk
 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))

wcsmbs/test-wcspbrk.c

@@ -0,0 +1,20 @@
+/* Test wcspbrk 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-strpbrk.c"

wcsmbs/wcspbrk.c

@@ -18,6 +18,9 @@
 
 #include <wchar.h>
 
+#ifdef WCSPBRK
+# define wcspbrk WCSPBRK
+#endif
 
 /* Find the first occurrence in WCS of any wide-character in ACCEPT.  */
 wchar_t *