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Optimized strcasecmp for Power7
This commit is contained in:
Adhemerval Zanella
Ulrich Drepper
parent
36b1a74da5
commit
f0b264f174
13
ChangeLog
13
ChangeLog
@ -1,3 +1,16 @@
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2011-11-22 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
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* sysdeps/powerpc/Makefile: Added locale-defines.sym generation.
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* sysdeps/powerpc/locale-defines.sym: Locale definitions for strcasecmp
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optimized code.
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* sysdeps/powerpc/powerpc32/power7/Makefile: New file.
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* sysdeps/powerpc/powerpc32/power7/strcasecmp.S: New file.
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* sysdeps/powerpc/powerpc32/power7/strcasecmp_l.S: New file.
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* sysdeps/powerpc/powerpc64/power7/Makefile: Added unroll-loop option
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for strncasecmp/strncasecmp_l compilation.
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* sysdeps/powerpc/powerpc64/power7/strcasecmp.S: New file.
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* sysdeps/powerpc/powerpc64/power7/strcasecmp_l.S: New file.
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2011-12-08 Marek Polacek <mpolacek@redhat.com>
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[BZ #13484]
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3
NEWS
3
NEWS
@ -62,7 +62,8 @@ Version 2.15
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* Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
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Implemented by Ulrich Drepper.
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* Optimized nearbyint for PPC. Implemented by Adhemerval Zanella.
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* Optimized nearbyint and strcasecmp for PPC.
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Implemented by Adhemerval Zanella.
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Version 2.14
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@ -23,4 +23,6 @@ endif
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ifeq ($(subdir),csu)
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# get offset to rtld_global._dl_hwcap
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gen-as-const-headers += rtld-global-offsets.sym
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# get offset to __locale_struct.__ctype_tolower
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gen-as-const-headers += locale-defines.sym
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endif
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5
sysdeps/powerpc/locale-defines.sym
Normal file
5
sysdeps/powerpc/locale-defines.sym
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@ -0,0 +1,5 @@
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#include <locale/localeinfo.h>
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--
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LOCALE_CTYPE_TOLOWER offsetof (struct __locale_struct, __ctype_tolower)
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4
sysdeps/powerpc/powerpc32/power7/Makefile
Normal file
4
sysdeps/powerpc/powerpc32/power7/Makefile
Normal file
@ -0,0 +1,4 @@
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ifeq ($(subdir),string)
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CFLAGS-strncase.c += -funroll-loops
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CFLAGS-strncase_l.c += -funroll-loops
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endif
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132
sysdeps/powerpc/powerpc32/power7/strcasecmp.S
Normal file
132
sysdeps/powerpc/powerpc32/power7/strcasecmp.S
Normal file
@ -0,0 +1,132 @@
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/* Optimized strcasecmp implementation for PowerPC32.
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Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <bp-sym.h>
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#include <bp-asm.h>
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#include <locale-defines.h>
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/* int [r3] strcasecmp (const char *s1 [r3], const char *s2 [r4] )
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or if defined USE_IN_EXTENDED_LOCALE_MODEL:
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int [r3] strcasecmp_l (const char *s1 [r3], const char *s2 [r4],
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__locale_t loc [r5]) */
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#ifndef STRCMP
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# define __STRCMP __strcasecmp
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# define STRCMP strcasecmp
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#endif
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ENTRY (BP_SYM (__STRCMP))
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#define rRTN r3 /* Return value */
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#define rSTR1 r5 /* 1st string */
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#define rSTR2 r4 /* 2nd string */
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#define rLOCARG r5 /* 3rd argument: locale_t */
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#define rCHAR1 r6 /* Byte readed from 1st string */
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#define rCHAR2 r7 /* Byte readed from 2nd string */
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#define rADDR1 r8 /* Address of tolower(rCHAR1) */
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#define rADDR2 r12 /* Address of tolower(rCHAR2) */
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#define rLWR1 r8 /* Byte tolower(rCHAR1) */
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#define rLWR2 r12 /* Byte tolower(rCHAR2) */
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#define rTMP r0
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#define rGOT r9 /* Address of the Global Offset Table */
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#define rLOC r11 /* Default locale address */
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cmpw cr7, r3, r4
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#ifndef USE_IN_EXTENDED_LOCALE_MODEL
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# ifdef SHARED
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mflr rTMP
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bcl 20,31,.L1
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.L1: mflr rGOT
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addis rGOT, rGOT, _GLOBAL_OFFSET_TABLE_-.L1@ha
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addi rGOT, rGOT, _GLOBAL_OFFSET_TABLE_-.L1@l
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lwz rLOC, __libc_tsd_LOCALE@got@tprel(rGOT)
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add rLOC, rLOC, __libc_tsd_LOCALE@tls
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lwz rLOC, 0(rLOC)
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mtlr rTMP
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# else
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lis rTMP,_GLOBAL_OFFSET_TABLE_@ha
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la rLOC,_GLOBAL_OFFSET_TABLE_@l(rTMP)
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lwz rLOC, __libc_tsd_LOCALE@got@tprel(rGOT)
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add rLOC, rLOC, __libc_tsd_LOCALE@tls
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lwz rLOC, 0(rLOC)
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# endif /* SHARED */
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#else
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mr rLOC, rLOCARG
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#endif
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mr rSTR1, rRTN
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lwz rLOC, LOCALE_CTYPE_TOLOWER(rLOC)
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li rRTN, 0
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beqlr cr7
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/* Unrolling loop for POWER: loads are done with 'lbz' plus
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offset and string descriptors are only updated in the end
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of loop unrolling. */
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L(loop):
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lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
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lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
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sldi rADDR1, rCHAR1, 2 /* Calculate address for tolower(*s1) */
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sldi rADDR2, rCHAR2, 2 /* Calculate address for tolower(*s2) */
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lwzx rLWR1, rLOC, rADDR1 /* Load tolower(*s1) */
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lwzx rLWR2, rLOC, rADDR2 /* Load tolower(*s2) */
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cmpwi cr7, rCHAR1, 0 /* *s1 == '\0' ? */
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subf. r3, rLWR2, rLWR1
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bnelr
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beqlr cr7
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lbz rCHAR1, 1(rSTR1)
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lbz rCHAR2, 1(rSTR2)
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpwi cr7, rCHAR1, 0
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subf. r3, rLWR2, rLWR1
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bnelr
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beqlr cr7
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lbz rCHAR1, 2(rSTR1)
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lbz rCHAR2, 2(rSTR2)
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpwi cr7, rCHAR1, 0
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subf. r3, rLWR2, rLWR1
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bnelr
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beqlr cr7
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lbz rCHAR1, 3(rSTR1)
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lbz rCHAR2, 3(rSTR2)
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/* Increment both string descriptors */
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addi rSTR1, rSTR1, 4
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addi rSTR2, rSTR2, 4
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpwi cr7, rCHAR1, 0
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subf. r3, rLWR2, rLWR1
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bnelr
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bne cr7,L(loop)
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blr
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END (BP_SYM (__STRCMP))
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weak_alias (BP_SYM (__STRCMP), BP_SYM (STRCMP))
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libc_hidden_builtin_def (__STRCMP)
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5
sysdeps/powerpc/powerpc32/power7/strcasecmp_l.S
Normal file
5
sysdeps/powerpc/powerpc32/power7/strcasecmp_l.S
Normal file
@ -0,0 +1,5 @@
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#define USE_IN_EXTENDED_LOCALE_MODEL
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#define STRCMP strcasecmp_l
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#define __STRCMP __strcasecmp_l
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#include "strcasecmp.S"
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@ -3,3 +3,8 @@ ifeq ($(subdir),elf)
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# optimization may require a TOC reference before relocations are resolved.
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CFLAGS-rtld.c += -mno-vsx
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endif
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ifeq ($(subdir),string)
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CFLAGS-strncase.c += -funroll-loops
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CFLAGS-strncase_l.c += -funroll-loops
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endif
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125
sysdeps/powerpc/powerpc64/power7/strcasecmp.S
Normal file
125
sysdeps/powerpc/powerpc64/power7/strcasecmp.S
Normal file
@ -0,0 +1,125 @@
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/* Optimized strcasecmp implementation for PowerPC64.
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Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <bp-sym.h>
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#include <bp-asm.h>
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#include <locale-defines.h>
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/* int [r3] strcasecmp (const char *s1 [r3], const char *s2 [r4] )
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or if defined USE_IN_EXTENDED_LOCALE_MODEL:
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int [r3] strcasecmp_l (const char *s1 [r3], const char *s2 [r4],
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__locale_t loc [r5]) */
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#ifndef STRCMP
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# define __STRCMP __strcasecmp
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# define STRCMP strcasecmp
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#endif
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ENTRY (BP_SYM (__STRCMP))
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CALL_MCOUNT 2
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#define rRTN r3 /* Return value */
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#define rSTR1 r5 /* 1st string */
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#define rSTR2 r4 /* 2nd string */
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#define rLOCARG r5 /* 3rd argument: locale_t */
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#define rCHAR1 r6 /* Byte readed from 1st string */
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#define rCHAR2 r7 /* Byte readed from 2nd string */
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#define rADDR1 r8 /* Address of tolower(rCHAR1) */
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#define rADDR2 r12 /* Address of tolower(rCHAR2) */
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#define rLWR1 r8 /* Word tolower(rCHAR1) */
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#define rLWR2 r12 /* Word tolower(rCHAR2) */
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#define rTMP r9
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#define rLOC r11 /* Default locale address */
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cmpd cr7, r3, r4
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#ifndef USE_IN_EXTENDED_LOCALE_MODEL
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ld rTMP, __libc_tsd_LOCALE@got@tprel(r2)
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add rLOC, rTMP, __libc_tsd_LOCALE@tls
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ld rLOC, 0(rLOC)
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#else
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mr rLOC, rLOCARG
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#endif
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ld rLOC, LOCALE_CTYPE_TOLOWER(rLOC)
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mr rSTR1, rRTN
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li rRTN, 0
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beqlr cr7
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/* Unrolling loop for POWER: loads are done with 'lbz' plus
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offset and string descriptors are only updated in the end
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of loop unrolling. */
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lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
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lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
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L(loop):
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cmpdi rCHAR1, 0 /* *s1 == '\0' ? */
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sldi rADDR1, rCHAR1, 2 /* Calculate address for tolower(*s1) */
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sldi rADDR2, rCHAR2, 2 /* Calculate address for tolower(*s2) */
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lwzx rLWR1, rLOC, rADDR1 /* Load tolower(*s1) */
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lwzx rLWR2, rLOC, rADDR2 /* Load tolower(*s2) */
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cmpw cr1, rLWR1, rLWR2 /* r = tolower(*s1) == tolower(*s2) ? */
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crorc 4*cr1+eq,eq,4*cr1+eq /* (*s1 != '\0') || (r == 1) */
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beq cr1, L(done)
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lbz rCHAR1, 1(rSTR1)
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lbz rCHAR2, 1(rSTR2)
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cmpdi rCHAR1, 0
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpw cr1, rLWR1, rLWR2
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crorc 4*cr1+eq,eq,4*cr1+eq
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beq cr1, L(done)
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lbz rCHAR1, 2(rSTR1)
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lbz rCHAR2, 2(rSTR2)
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cmpdi rCHAR1, 0
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpw cr1, rLWR1, rLWR2
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crorc 4*cr1+eq,eq,4*cr1+eq
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beq cr1, L(done)
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lbz rCHAR1, 3(rSTR1)
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lbz rCHAR2, 3(rSTR2)
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cmpdi rCHAR1, 0
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/* Increment both string descriptors */
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addi rSTR1, rSTR1, 4
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addi rSTR2, rSTR2, 4
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sldi rADDR1, rCHAR1, 2
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sldi rADDR2, rCHAR2, 2
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lwzx rLWR1, rLOC, rADDR1
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lwzx rLWR2, rLOC, rADDR2
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cmpw cr1, rLWR1, rLWR2
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crorc 4*cr1+eq,eq,4*cr1+eq
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beq cr1,L(done)
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lbz rCHAR1, 0(rSTR1) /* Load char from s1 */
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lbz rCHAR2, 0(rSTR2) /* Load char from s2 */
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b L(loop)
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L(done):
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subf r0, rLWR2, rLWR1
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extsw rRTN, r0
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blr
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END (BP_SYM (__STRCMP))
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weak_alias (BP_SYM (__STRCMP), BP_SYM (STRCMP))
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libc_hidden_builtin_def (__STRCMP)
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5
sysdeps/powerpc/powerpc64/power7/strcasecmp_l.S
Normal file
5
sysdeps/powerpc/powerpc64/power7/strcasecmp_l.S
Normal file
@ -0,0 +1,5 @@
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#define USE_IN_EXTENDED_LOCALE_MODEL
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#define STRCMP strcasecmp_l
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#define __STRCMP __strcasecmp_l
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#include "strcasecmp.S"
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