From 4c98816d5248bed13b1d8388efc0c47fe869300f Mon Sep 17 00:00:00 2001 From: Stefan Liebler Date: Thu, 8 Oct 2015 11:02:10 +0200 Subject: [PATCH 12/30] S390: Optimize strcpy and wcscpy. upstream-commit-id: 680df122ab8a07806cb38d044292896334f76c01 https://www.sourceware.org/ml/libc-alpha/2015-07/msg00157.html This patch provides optimized versions of strcpy and wcscpy with the z13 vector instructions. ChangeLog: * sysdeps/s390/multiarch/strcpy-vx.S: New File. * sysdeps/s390/multiarch/strcpy.c: Likewise. * sysdeps/s390/multiarch/wcscpy-c.c: Likewise. * sysdeps/s390/multiarch/wcscpy-vx.S: Likewise. * sysdeps/s390/multiarch/wcscpy.c: Likewise. * sysdeps/s390/s390-32/multiarch/strcpy.c: Likewise. * sysdeps/s390/s390-64/multiarch/strcpy.c: Likewise. * sysdeps/s390/multiarch/Makefile (sysdep_routines): Add strcpy and wcscpy functions. * sysdeps/s390/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list): Add ifunc test for strcpy, wcscpy. * benchtests/bench-wcscpy.c: New File. * benchtests/Makefile (wcsmbs-bench): Add wcscpy. --- benchtests/Makefile | 2 +- benchtests/bench-wcscpy.c | 20 ++++++ sysdeps/s390/multiarch/Makefile | 6 +- sysdeps/s390/multiarch/ifunc-impl-list.c | 3 + sysdeps/s390/multiarch/strcpy-vx.S | 109 ++++++++++++++++++++++++++++++ sysdeps/s390/multiarch/strcpy.c | 24 +++++++ sysdeps/s390/multiarch/wcscpy-c.c | 25 +++++++ sysdeps/s390/multiarch/wcscpy-vx.S | 111 +++++++++++++++++++++++++++++++ sysdeps/s390/multiarch/wcscpy.c | 27 ++++++++ sysdeps/s390/s390-32/multiarch/strcpy.c | 21 ++++++ sysdeps/s390/s390-64/multiarch/strcpy.c | 21 ++++++ 11 files changed, 366 insertions(+), 3 deletions(-) create mode 100644 benchtests/bench-wcscpy.c create mode 100644 sysdeps/s390/multiarch/strcpy-vx.S create mode 100644 sysdeps/s390/multiarch/strcpy.c create mode 100644 sysdeps/s390/multiarch/wcscpy-c.c create mode 100644 sysdeps/s390/multiarch/wcscpy-vx.S create mode 100644 sysdeps/s390/multiarch/wcscpy.c create mode 100644 sysdeps/s390/s390-32/multiarch/strcpy.c create mode 100644 sysdeps/s390/s390-64/multiarch/strcpy.c diff --git a/benchtests/Makefile b/benchtests/Makefile index 7bb2eef..1dda844 100644 --- a/benchtests/Makefile +++ b/benchtests/Makefile @@ -38,7 +38,7 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \ strcat strchr strchrnul strcmp strcpy strcspn strlen \ strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \ strspn strstr strcpy_chk stpcpy_chk memrchr strsep strtok -wcsmbs-bench := wcslen wcsnlen +wcsmbs-bench := wcslen wcsnlen wcscpy string-bench-all := $(string-bench) ${wcsmbs-bench} stdlib-bench := strtod diff --git a/benchtests/bench-wcscpy.c b/benchtests/bench-wcscpy.c new file mode 100644 index 0000000..62c5825 --- /dev/null +++ b/benchtests/bench-wcscpy.c @@ -0,0 +1,20 @@ +/* Measure wcscpy functions. + Copyright (C) 2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#define WIDE 1 +#include "bench-strcpy.c" diff --git a/sysdeps/s390/multiarch/Makefile b/sysdeps/s390/multiarch/Makefile index 3397f24..e2202b7 100644 --- a/sysdeps/s390/multiarch/Makefile +++ b/sysdeps/s390/multiarch/Makefile @@ -1,9 +1,11 @@ ifeq ($(subdir),string) sysdep_routines += strlen strlen-vx strlen-c \ - strnlen strnlen-vx strnlen-c + strnlen strnlen-vx strnlen-c \ + strcpy strcpy-vx endif ifeq ($(subdir),wcsmbs) sysdep_routines += wcslen wcslen-vx wcslen-c \ - wcsnlen wcsnlen-vx wcsnlen-c + wcsnlen wcsnlen-vx wcsnlen-c \ + wcscpy wcscpy-vx wcscpy-c endif diff --git a/sysdeps/s390/multiarch/ifunc-impl-list.c b/sysdeps/s390/multiarch/ifunc-impl-list.c index bc17c59..c9228d6 100644 --- a/sysdeps/s390/multiarch/ifunc-impl-list.c +++ b/sysdeps/s390/multiarch/ifunc-impl-list.c @@ -85,6 +85,9 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, IFUNC_VX_IMPL (strnlen); IFUNC_VX_IMPL (wcsnlen); + IFUNC_VX_IMPL (strcpy); + IFUNC_VX_IMPL (wcscpy); + #endif /* HAVE_S390_VX_ASM_SUPPORT */ return i; diff --git a/sysdeps/s390/multiarch/strcpy-vx.S b/sysdeps/s390/multiarch/strcpy-vx.S new file mode 100644 index 0000000..a8243b0 --- /dev/null +++ b/sysdeps/s390/multiarch/strcpy-vx.S @@ -0,0 +1,109 @@ +/* Vector optimized 32/64 bit S/390 version of strcpy. + 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc + +# include "sysdep.h" +# include "asm-syntax.h" + + .text + +/* char * strcpy (const char *dest, const char *src) + Copy string src to dest. + + Register usage: + -r1=tmp + -r2=dest and return_value + -r3=src + -r4=tmp + -r5=current_len + -v16=part of src + -v17=index of zero + -v18=part of src +*/ +ENTRY(__strcpy_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + + vlbb %v16,0(%r3),6 /* Load s until next 4k-byte boundary. */ + lcbb %r1,0(%r3),6 /* Get bytes to 4k-byte boundary or 16. */ + + vfenezb %v17,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r5,%v17,7 /* Load zero index or 16 if not found. */ + clrjl %r5,%r1,.Lfound_align /* If found zero within loaded bytes, + copy bytes before and return. */ + + /* Align s to 16 byte. */ + risbgn %r4,%r3,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,15 /* current_len = 15. */ + slr %r5,%r4 /* Compute highest index to 16byte boundary. */ + + vstl %v16,%r5,0(%r2) /* Copy loaded characters - no zero. */ + ahi %r5,1 /* Start loop at next character. */ + + /* Find zero in 16byte aligned loop. */ +.Lloop: + vl %v16,0(%r5,%r3) /* Load s. */ + vfenezbs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lfound_v16_0 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3)/* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Store previous part without zero to dst. */ + vfenezbs %v17,%v18,%v18 + je .Lfound_v18_16 + vl %v16,32(%r5,%r3) + vst %v18,16(%r5,%r2) + vfenezbs %v17,%v16,%v16 + je .Lfound_v16_32 + vl %v18,48(%r5,%r3) + vst %v16,32(%r5,%r2) + vfenezbs %v17,%v18,%v18 + je .Lfound_v18_48 + vst %v18,48(%r5,%r2) + + aghi %r5,64 + j .Lloop /* No zero found -> loop. */ + +.Lfound_v16_32: + aghi %r5,32 +.Lfound_v16_0: + la %r3,0(%r5,%r2) + vlgvb %r4,%v17,7 /* Load byte index of zero. */ + vstl %v16,%r4,0(%r3) /* Store characters including zero. */ + br %r14 + +.Lfound_v18_48: + aghi %r5,32 +.Lfound_v18_16: + la %r3,16(%r5,%r2) + vlgvb %r4,%v17,7 /* Load byte index of zero. */ + vstl %v18,%r4,0(%r3) /* Store characters including zero. */ + br %r14 + +.Lfound_align: + vstl %v16,%r5,0(%r2) /* Copy characters including zero. */ + br %r14 +END(__strcpy_vx) + +/* Use mvst-strcpy-implementation as default implementation. */ +# define strcpy __strcpy_c +# undef libc_hidden_builtin_def +# define libc_hidden_builtin_def(name) strong_alias(__strcpy_c, __GI_strcpy) +#endif /* HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc */ + +/* Include mvst-strcpy-implementation in s390-32/s390-64 subdirectory. */ +#include diff --git a/sysdeps/s390/multiarch/strcpy.c b/sysdeps/s390/multiarch/strcpy.c new file mode 100644 index 0000000..2e00ddf --- /dev/null +++ b/sysdeps/s390/multiarch/strcpy.c @@ -0,0 +1,24 @@ +/* Multiple versions of strcpy. + 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc +# include +# include + +s390_vx_libc_ifunc2 (__strcpy, strcpy) +#endif diff --git a/sysdeps/s390/multiarch/wcscpy-c.c b/sysdeps/s390/multiarch/wcscpy-c.c new file mode 100644 index 0000000..ca219dd --- /dev/null +++ b/sysdeps/s390/multiarch/wcscpy-c.c @@ -0,0 +1,25 @@ +/* Default wcscpy 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc +# define WCSCPY __wcscpy_c + +# include +extern __typeof (wcscpy) __wcscpy_c; +# include +#endif diff --git a/sysdeps/s390/multiarch/wcscpy-vx.S b/sysdeps/s390/multiarch/wcscpy-vx.S new file mode 100644 index 0000000..6ec10bf --- /dev/null +++ b/sysdeps/s390/multiarch/wcscpy-vx.S @@ -0,0 +1,111 @@ +/* Vector optimized 32/64 bit S/390 version of wcscpy. + 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc + +# include "sysdep.h" +# include "asm-syntax.h" + + .text + +/* char * wcscpy (const wchar_t *dest, const wchar_t *src) + Copy string src to dest. + + Register usage: + -r0=border-len for switching to vector-instructions + -r1=tmp + -r2=dest and return value + -r3=src + -r4=tmp + -r5=current_len + -v16=part of src + -v17=index of zero + -v18=part of src +*/ +ENTRY(__wcscpy_vx) + .machine "z13" + .machinemode "zarch_nohighgprs" + + vlbb %v16,0(%r3),6 /* Load s until next 4k-byte boundary. */ + lcbb %r1,0(%r3),6 /* Get bytes to 4k-byte boundary or 16. */ + + tmll %r3,3 /* Test if s is 4-byte aligned? */ + jne .Lfallback /* And use common-code variant if not. */ + + vfenezf %v17,%v16,%v16 /* Find element not equal with zero search. */ + vlgvb %r5,%v17,7 /* Load zero index or 16 if not found. */ + clrjl %r5,%r1,.Lfound_align /* If found zero within loaded bytes, + copy bytes before and return. */ + + /* Align s to 16 byte. */ + risbgn %r4,%r3,60,128+63,0 /* %r3 = bits 60-63 of %r2 'and' 15. */ + lghi %r5,15 /* current_len = 15. */ + slr %r5,%r4 /* Compute highest index to 16byte boundary. */ + + vstl %v16,%r5,0(%r2) /* Copy loaded characters - no zero. */ + ahi %r5,1 /* Start loop at next character. */ + + /* Find zero in 16byte aligned loop. */ +.Lloop: + vl %v16,0(%r5,%r3) /* Load s. */ + vfenezfs %v17,%v16,%v16 /* Find element not equal with zero search. */ + je .Lfound_v16_0 /* Jump away if zero was found. */ + vl %v18,16(%r5,%r3) /* Load next part of s. */ + vst %v16,0(%r5,%r2) /* Store previous part without zero to dst. */ + vfenezfs %v17,%v18,%v18 + je .Lfound_v18_16 + vl %v16,32(%r5,%r3) + vst %v18,16(%r5,%r2) + vfenezfs %v17,%v16,%v16 + je .Lfound_v16_32 + vl %v18,48(%r5,%r3) + vst %v16,32(%r5,%r2) + vfenezfs %v17,%v18,%v18 + je .Lfound_v18_48 + vst %v18,48(%r5,%r2) + + aghi %r5,64 + j .Lloop /* No zero found -> loop. */ + +.Lfound_v16_32: + aghi %r5,32 +.Lfound_v16_0: + la %r3,0(%r5,%r2) + vlgvb %r1,%v17,7 /* Load byte index of zero. */ + aghi %r1,3 /* Also copy remaining bytes of zero. */ + vstl %v16,%r1,0(%r3) /* Copy characters including zero. */ + br %r14 + +.Lfound_v18_48: + aghi %r5,32 +.Lfound_v18_16: + la %r3,16(%r5,%r2) + vlgvb %r1,%v17,7 /* Load byte index of zero. */ + aghi %r1,3 /* Also copy remaining bytes of zero. */ + vstl %v18,%r1,0(%r3) /* Copy characters including zero. */ + br %r14 + +.Lfound_align: + aghi %r5,3 /* Also copy remaining bytes of zero. */ + vstl %v16,%r5,0(%r2) /* Copy characters including zero. */ + br %r14 + +.Lfallback: + jg __wcscpy_c +END(__wcscpy_vx) +#endif /* HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc */ diff --git a/sysdeps/s390/multiarch/wcscpy.c b/sysdeps/s390/multiarch/wcscpy.c new file mode 100644 index 0000000..b3a057a --- /dev/null +++ b/sysdeps/s390/multiarch/wcscpy.c @@ -0,0 +1,27 @@ +/* Multiple versions of wcscpy. + 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 + . */ + +#if defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc +# include +# include + +s390_vx_libc_ifunc2 (__wcscpy, wcscpy) + +#else +# include +#endif /* !(defined HAVE_S390_VX_ASM_SUPPORT && !defined NOT_IN_libc) */ diff --git a/sysdeps/s390/s390-32/multiarch/strcpy.c b/sysdeps/s390/s390-32/multiarch/strcpy.c new file mode 100644 index 0000000..b02c392 --- /dev/null +++ b/sysdeps/s390/s390-32/multiarch/strcpy.c @@ -0,0 +1,21 @@ +/* Multiple versions of strcpy. + 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 + . */ + +/* This wrapper-file is needed, because otherwise file + sysdeps/s390/s390-[32|64]/strcpy.S will be used. */ +#include diff --git a/sysdeps/s390/s390-64/multiarch/strcpy.c b/sysdeps/s390/s390-64/multiarch/strcpy.c new file mode 100644 index 0000000..b02c392 --- /dev/null +++ b/sysdeps/s390/s390-64/multiarch/strcpy.c @@ -0,0 +1,21 @@ +/* Multiple versions of strcpy. + 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 + . */ + +/* This wrapper-file is needed, because otherwise file + sysdeps/s390/s390-[32|64]/strcpy.S will be used. */ +#include -- 2.3.0