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base/SOURCES/glibc-rh1268008-25.patch

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From 6be435ec4f615266351487da396333f3ff026c03 Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.vnet.ibm.com>
Date: Thu, 8 Oct 2015 13:02:41 +0200
Subject: [PATCH 25/30] S390: Optimize strcspn and wcscspn.
upstream-commit-id: b4c21601b147efc3c2b0e679e4ffc554b3987f0b
https://www.sourceware.org/ml/libc-alpha/2015-07/msg00099.html
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.
---
benchtests/Makefile | 2 +-
benchtests/bench-strcspn.c | 45 +++--
benchtests/bench-wcscspn.c | 20 +++
string/strcspn.c | 8 +-
string/test-strcspn.c | 45 +++--
sysdeps/s390/multiarch/Makefile | 6 +-
sysdeps/s390/multiarch/ifunc-impl-list.c | 3 +
sysdeps/s390/multiarch/strcspn-c.c | 28 +++
sysdeps/s390/multiarch/strcspn-vx.S | 281 +++++++++++++++++++++++++++++
sysdeps/s390/multiarch/strcspn.c | 27 +++
sysdeps/s390/multiarch/wcscspn-c.c | 26 +++
sysdeps/s390/multiarch/wcscspn-vx.S | 293 +++++++++++++++++++++++++++++++
sysdeps/s390/multiarch/wcscspn.c | 27 +++
wcsmbs/Makefile | 3 +-
wcsmbs/test-wcscspn-ifunc.c | 20 +++
wcsmbs/test-wcscspn.c | 20 +++
wcsmbs/wcscspn.c | 3 +
17 files changed, 826 insertions(+), 31 deletions(-)
create mode 100644 benchtests/bench-wcscspn.c
create mode 100644 sysdeps/s390/multiarch/strcspn-c.c
create mode 100644 sysdeps/s390/multiarch/strcspn-vx.S
create mode 100644 sysdeps/s390/multiarch/strcspn.c
create mode 100644 sysdeps/s390/multiarch/wcscspn-c.c
create mode 100644 sysdeps/s390/multiarch/wcscspn-vx.S
create mode 100644 sysdeps/s390/multiarch/wcscspn.c
create mode 100644 wcsmbs/test-wcscspn-ifunc.c
create mode 100644 wcsmbs/test-wcscspn.c
diff --git a/benchtests/Makefile b/benchtests/Makefile
index 015b5d6..4e811a9 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -39,7 +39,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok
wcsmbs-bench := wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat \
- wcsncmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk
+ wcsncmp wcsncmp wcschr wcschrnul wcsrchr wcsspn wcspbrk wcscspn
string-bench-all := $(string-bench) ${wcsmbs-bench}
stdlib-bench := strtod
diff --git a/benchtests/bench-strcspn.c b/benchtests/bench-strcspn.c
index 22b3b84..25de640 100644
--- a/benchtests/bench-strcspn.c
+++ b/benchtests/bench-strcspn.c
@@ -19,22 +19,41 @@
#define STRPBRK_RESULT(s, pos) (pos)
#define RES_TYPE size_t
#define TEST_MAIN
-#define TEST_NAME "strcspn"
+#ifndef WIDE
+# define TEST_NAME "strcspn"
+#else
+# define TEST_NAME "wcscspn"
+#endif /* WIDE */
#include "bench-string.h"
-typedef size_t (*proto_t) (const char *, const char *);
-size_t simple_strcspn (const char *, const char *);
-size_t stupid_strcspn (const char *, const char *);
+#ifndef WIDE
+# define STRCSPN strcspn
+# define CHAR char
+# define SIMPLE_STRCSPN simple_strcspn
+# define STUPID_STRCSPN stupid_strcspn
+# define STRLEN strlen
+#else
+# include <wchar.h>
+# define STRCSPN wcscspn
+# define CHAR wchar_t
+# define SIMPLE_STRCSPN simple_wcscspn
+# define STUPID_STRCSPN stupid_wcscspn
+# define STRLEN wcslen
+#endif /* WIDE */
-IMPL (stupid_strcspn, 0)
-IMPL (simple_strcspn, 0)
-IMPL (strcspn, 1)
+typedef size_t (*proto_t) (const CHAR *, const CHAR *);
+size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *);
+size_t STUPID_STRCSPN (const CHAR *, const CHAR *);
+
+IMPL (STUPID_STRCSPN, 0)
+IMPL (SIMPLE_STRCSPN, 0)
+IMPL (STRCSPN, 1)
size_t
-simple_strcspn (const char *s, const char *rej)
+SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej)
{
- const char *r, *str = s;
- char c;
+ const CHAR *r, *str = s;
+ CHAR c;
while ((c = *s++) != '\0')
for (r = rej; *r != '\0'; ++r)
@@ -44,9 +63,9 @@ simple_strcspn (const char *s, const char *rej)
}
size_t
-stupid_strcspn (const char *s, const char *rej)
+STUPID_STRCSPN (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)
@@ -56,4 +75,6 @@ stupid_strcspn (const char *s, const char *rej)
return i;
}
+#undef CHAR
+#undef STRLEN
#include "bench-strpbrk.c"
diff --git a/benchtests/bench-wcscspn.c b/benchtests/bench-wcscspn.c
new file mode 100644
index 0000000..3991951
--- /dev/null
+++ b/benchtests/bench-wcscspn.c
@@ -0,0 +1,20 @@
+/* Measure 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 "bench-strcspn.c"
diff --git a/string/strcspn.c b/string/strcspn.c
index 6290429..0c750a8 100644
--- a/string/strcspn.c
+++ b/string/strcspn.c
@@ -30,12 +30,14 @@
#undef strcspn
+#ifndef STRCSPN
+# define STRCSPN strcspn
+#endif
+
/* Return the length of the maximum initial segment of S
which contains no characters from REJECT. */
size_t
-strcspn (s, reject)
- const char *s;
- const char *reject;
+STRCSPN (const char *s, const char *reject)
{
size_t count = 0;
diff --git a/string/test-strcspn.c b/string/test-strcspn.c
index e2863c7..3443425 100644
--- a/string/test-strcspn.c
+++ b/string/test-strcspn.c
@@ -20,22 +20,41 @@
#define STRPBRK_RESULT(s, pos) (pos)
#define RES_TYPE size_t
#define TEST_MAIN
-#define TEST_NAME "strcspn"
+#ifndef WIDE
+# define TEST_NAME "strcspn"
+#else
+# define TEST_NAME "wcscspn"
+#endif /* WIDE */
#include "test-string.h"
-typedef size_t (*proto_t) (const char *, const char *);
-size_t simple_strcspn (const char *, const char *);
-size_t stupid_strcspn (const char *, const char *);
+#ifndef WIDE
+# define STRCSPN strcspn
+# define CHAR char
+# define SIMPLE_STRCSPN simple_strcspn
+# define STUPID_STRCSPN stupid_strcspn
+# define STRLEN strlen
+#else
+# include <wchar.h>
+# define STRCSPN wcscspn
+# define CHAR wchar_t
+# define SIMPLE_STRCSPN simple_wcscspn
+# define STUPID_STRCSPN stupid_wcscspn
+# define STRLEN wcslen
+#endif /* WIDE */
-IMPL (stupid_strcspn, 0)
-IMPL (simple_strcspn, 0)
-IMPL (strcspn, 1)
+typedef size_t (*proto_t) (const CHAR *, const CHAR *);
+size_t SIMPLE_STRCSPN (const CHAR *, const CHAR *);
+size_t STUPID_STRCSPN (const CHAR *, const CHAR *);
+
+IMPL (STUPID_STRCSPN, 0)
+IMPL (SIMPLE_STRCSPN, 0)
+IMPL (STRCSPN, 1)
size_t
-simple_strcspn (const char *s, const char *rej)
+SIMPLE_STRCSPN (const CHAR *s, const CHAR *rej)
{
- const char *r, *str = s;
- char c;
+ const CHAR *r, *str = s;
+ CHAR c;
while ((c = *s++) != '\0')
for (r = rej; *r != '\0'; ++r)
@@ -45,9 +64,9 @@ simple_strcspn (const char *s, const char *rej)
}
size_t
-stupid_strcspn (const char *s, const char *rej)
+STUPID_STRCSPN (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)
@@ -57,4 +76,6 @@ stupid_strcspn (const char *s, const char *rej)
return i;
}
+#undef CHAR
+#undef STRLEN
#include "test-strpbrk.c"
diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile
index 5765a8c..2c1fce0 100644
--- a/sysdeps/s390/multiarch/Makefile
+++ b/sysdeps/s390/multiarch/Makefile
@@ -13,7 +13,8 @@ sysdep_routines += strlen strlen-vx strlen-c \
strchrnul strchrnul-vx strchrnul-c \
strrchr strrchr-vx strrchr-c \
strspn strspn-vx strspn-c \
- strpbrk strpbrk-vx strpbrk-c
+ strpbrk strpbrk-vx strpbrk-c \
+ strcspn strcspn-vx strcspn-c
endif
ifeq ($(subdir),wcsmbs)
@@ -31,5 +32,6 @@ sysdep_routines += wcslen wcslen-vx wcslen-c \
wcschrnul wcschrnul-vx wcschrnul-c \
wcsrchr wcsrchr-vx wcsrchr-c \
wcsspn wcsspn-vx wcsspn-c \
- wcspbrk wcspbrk-vx wcspbrk-c
+ wcspbrk wcspbrk-vx wcspbrk-c \
+ wcscspn wcscspn-vx wcscspn-c
endif
diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c
index b39a5c5..7f62e49 100644
--- a/sysdeps/s390/multiarch/ifunc-impl-list.c
+++ b/sysdeps/s390/multiarch/ifunc-impl-list.c
@@ -124,6 +124,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
IFUNC_VX_IMPL (strpbrk);
IFUNC_VX_IMPL (wcspbrk);
+ IFUNC_VX_IMPL (strcspn);
+ IFUNC_VX_IMPL (wcscspn);
+
#endif /* HAVE_S390_VX_ASM_SUPPORT */
return i;
diff --git a/sysdeps/s390/multiarch/strcspn-c.c b/sysdeps/s390/multiarch/strcspn-c.c
new file mode 100644
index 0000000..af04b4e
--- /dev/null
+++ b/sysdeps/s390/multiarch/strcspn-c.c
@@ -0,0 +1,28 @@
+/* Default strcspn 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 && !defined NOT_IN_libc
+# define STRCSPN __strcspn_c
+# ifdef SHARED
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name) \
+ __hidden_ver1 (__strcspn_c, __GI_strcspn, __strcspn_c);
+# endif /* SHARED */
+
+# include <string/strcspn.c>
+#endif /* HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc */
diff --git a/sysdeps/s390/multiarch/strcspn-vx.S b/sysdeps/s390/multiarch/strcspn-vx.S
new file mode 100644
index 0000000..c7113c4
--- /dev/null
+++ b/sysdeps/s390/multiarch/strcspn-vx.S
@@ -0,0 +1,281 @@
+/* Vector optimized 32/64 bit S/390 version 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 && !defined NOT_IN_libc
+
+# include "sysdep.h"
+# include "asm-syntax.h"
+
+ .text
+
+/* size_t strcspn (const char *s, const char * reject)
+ The strcspn() 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
+ v24: one for result-checking of former string-part
+ 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(__strcspn_vx)
+ .machine "z13"
+ .machinemode "zarch_nohighgprs"
+
+ /*
+ Check if reject-string fits in one vreg:
+ ----------------------------------------
+ */
+ vlbb %v17,0(%r3),6 /* Load reject. */
+ lghi %r1,0 /* Zero out current len. */
+ lcbb %r0,0(%r3),6
+ jo .Lcheck_onbb /* Special case if reject
+ lays on block-boundary. */
+.Lcheck_notonbb:
+ vistrbs %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. */
+ vfenezb %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. */
+ 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. */
+
+ 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. */
+ 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. */
+ 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 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 && !defined NOT_IN_libc */
diff --git a/sysdeps/s390/multiarch/strcspn.c b/sysdeps/s390/multiarch/strcspn.c
new file mode 100644
index 0000000..32b46c4
--- /dev/null
+++ b/sysdeps/s390/multiarch/strcspn.c
@@ -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 && !defined NOT_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 && !defined NOT_IN_libc) */
diff --git a/sysdeps/s390/multiarch/wcscspn-c.c b/sysdeps/s390/multiarch/wcscspn-c.c
new file mode 100644
index 0000000..95e76ae
--- /dev/null
+++ b/sysdeps/s390/multiarch/wcscspn-c.c
@@ -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 && !defined NOT_IN_libc
+# define WCSCSPN __wcscspn_c
+
+# include <wchar.h>
+extern __typeof (wcscspn) __wcscspn_c;
+
+# include <wcsmbs/wcscspn.c>
+#endif
diff --git a/sysdeps/s390/multiarch/wcscspn-vx.S b/sysdeps/s390/multiarch/wcscspn-vx.S
new file mode 100644
index 0000000..aa581ce
--- /dev/null
+++ b/sysdeps/s390/multiarch/wcscspn-vx.S
@@ -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 && !defined NOT_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 && !defined NOT_IN_libc */
diff --git a/sysdeps/s390/multiarch/wcscspn.c b/sysdeps/s390/multiarch/wcscspn.c
new file mode 100644
index 0000000..3cb4516
--- /dev/null
+++ b/sysdeps/s390/multiarch/wcscspn.c
@@ -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 && !defined NOT_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 && !defined NOT_IN_libc) */
diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index 7ecff8b..9730b00 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -42,7 +42,8 @@ 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))
diff --git a/wcsmbs/test-wcscspn-ifunc.c b/wcsmbs/test-wcscspn-ifunc.c
new file mode 100644
index 0000000..e5dcdaf
--- /dev/null
+++ b/wcsmbs/test-wcscspn-ifunc.c
@@ -0,0 +1,20 @@
+/* Test and measure IFUNC implementations of wcscspn function.
+ 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 TEST_IFUNC 1
+#include "test-wcscspn.c"
diff --git a/wcsmbs/test-wcscspn.c b/wcsmbs/test-wcscspn.c
new file mode 100644
index 0000000..d09cd3d
--- /dev/null
+++ b/wcsmbs/test-wcscspn.c
@@ -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"
diff --git a/wcsmbs/wcscspn.c b/wcsmbs/wcscspn.c
index 5d38d07..9e84226 100644
--- a/wcsmbs/wcscspn.c
+++ b/wcsmbs/wcscspn.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. */
--
2.3.0