x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2
Optimize x86-64 strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2.
It uses vector comparison as much as possible. In general, the larger the
source string, the greater performance gain observed, reaching speedups of
1.6x compared to SSE2 unaligned routines. Select AVX2 strcat/strncat,
strcpy/strncpy and stpcpy/stpncpy on AVX2 machines where vzeroupper is
preferred and AVX unaligned load is fast.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
strcat-avx2, strncat-avx2, strcpy-avx2, strncpy-avx2,
stpcpy-avx2 and stpncpy-avx2.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c:
(__libc_ifunc_impl_list): Add tests for __strcat_avx2,
__strncat_avx2, __strcpy_avx2, __strncpy_avx2, __stpcpy_avx2
and __stpncpy_avx2.
* sysdeps/x86_64/multiarch/{ifunc-unaligned-ssse3.h =>
ifunc-strcpy.h}: rename header for a more generic name.
* sysdeps/x86_64/multiarch/ifunc-strcpy.h:
(IFUNC_SELECTOR): Return OPTIMIZE (avx2) on AVX 2 machines if
AVX unaligned load is fast and vzeroupper is preferred.
* sysdeps/x86_64/multiarch/stpcpy-avx2.S: New file
* sysdeps/x86_64/multiarch/stpncpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncpy-avx2.S: Likewise
2018-10-08 13:59:50 +00:00
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/* strcpy with AVX2
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2020-01-01 00:14:33 +00:00
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Copyright (C) 2011-2020 Free Software Foundation, Inc.
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x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2
Optimize x86-64 strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2.
It uses vector comparison as much as possible. In general, the larger the
source string, the greater performance gain observed, reaching speedups of
1.6x compared to SSE2 unaligned routines. Select AVX2 strcat/strncat,
strcpy/strncpy and stpcpy/stpncpy on AVX2 machines where vzeroupper is
preferred and AVX unaligned load is fast.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
strcat-avx2, strncat-avx2, strcpy-avx2, strncpy-avx2,
stpcpy-avx2 and stpncpy-avx2.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c:
(__libc_ifunc_impl_list): Add tests for __strcat_avx2,
__strncat_avx2, __strcpy_avx2, __strncpy_avx2, __stpcpy_avx2
and __stpncpy_avx2.
* sysdeps/x86_64/multiarch/{ifunc-unaligned-ssse3.h =>
ifunc-strcpy.h}: rename header for a more generic name.
* sysdeps/x86_64/multiarch/ifunc-strcpy.h:
(IFUNC_SELECTOR): Return OPTIMIZE (avx2) on AVX 2 machines if
AVX unaligned load is fast and vzeroupper is preferred.
* sysdeps/x86_64/multiarch/stpcpy-avx2.S: New file
* sysdeps/x86_64/multiarch/stpncpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncpy-avx2.S: Likewise
2018-10-08 13:59:50 +00:00
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Contributed by Intel Corporation.
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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, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2
Optimize x86-64 strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2.
It uses vector comparison as much as possible. In general, the larger the
source string, the greater performance gain observed, reaching speedups of
1.6x compared to SSE2 unaligned routines. Select AVX2 strcat/strncat,
strcpy/strncpy and stpcpy/stpncpy on AVX2 machines where vzeroupper is
preferred and AVX unaligned load is fast.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
strcat-avx2, strncat-avx2, strcpy-avx2, strncpy-avx2,
stpcpy-avx2 and stpncpy-avx2.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c:
(__libc_ifunc_impl_list): Add tests for __strcat_avx2,
__strncat_avx2, __strcpy_avx2, __strncpy_avx2, __stpcpy_avx2
and __stpncpy_avx2.
* sysdeps/x86_64/multiarch/{ifunc-unaligned-ssse3.h =>
ifunc-strcpy.h}: rename header for a more generic name.
* sysdeps/x86_64/multiarch/ifunc-strcpy.h:
(IFUNC_SELECTOR): Return OPTIMIZE (avx2) on AVX 2 machines if
AVX unaligned load is fast and vzeroupper is preferred.
* sysdeps/x86_64/multiarch/stpcpy-avx2.S: New file
* sysdeps/x86_64/multiarch/stpncpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncpy-avx2.S: Likewise
2018-10-08 13:59:50 +00:00
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#if IS_IN (libc)
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# ifndef USE_AS_STRCAT
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# include <sysdep.h>
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# ifndef STRCPY
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# define STRCPY __strcpy_avx2
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# endif
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# endif
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/* Number of bytes in a vector register */
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# ifndef VEC_SIZE
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# define VEC_SIZE 32
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# endif
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# ifndef VZEROUPPER
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# define VZEROUPPER vzeroupper
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# endif
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/* zero register */
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#define xmmZ xmm0
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#define ymmZ ymm0
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/* mask register */
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#define ymmM ymm1
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# ifndef USE_AS_STRCAT
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.section .text.avx,"ax",@progbits
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ENTRY (STRCPY)
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# ifdef USE_AS_STRNCPY
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2019-01-21 19:35:18 +00:00
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mov %RDX_LP, %R8_LP
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test %R8_LP, %R8_LP
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x86-64: Optimize strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2
Optimize x86-64 strcat/strncat, strcpy/strncpy and stpcpy/stpncpy with AVX2.
It uses vector comparison as much as possible. In general, the larger the
source string, the greater performance gain observed, reaching speedups of
1.6x compared to SSE2 unaligned routines. Select AVX2 strcat/strncat,
strcpy/strncpy and stpcpy/stpncpy on AVX2 machines where vzeroupper is
preferred and AVX unaligned load is fast.
* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
strcat-avx2, strncat-avx2, strcpy-avx2, strncpy-avx2,
stpcpy-avx2 and stpncpy-avx2.
* sysdeps/x86_64/multiarch/ifunc-impl-list.c:
(__libc_ifunc_impl_list): Add tests for __strcat_avx2,
__strncat_avx2, __strcpy_avx2, __strncpy_avx2, __stpcpy_avx2
and __stpncpy_avx2.
* sysdeps/x86_64/multiarch/{ifunc-unaligned-ssse3.h =>
ifunc-strcpy.h}: rename header for a more generic name.
* sysdeps/x86_64/multiarch/ifunc-strcpy.h:
(IFUNC_SELECTOR): Return OPTIMIZE (avx2) on AVX 2 machines if
AVX unaligned load is fast and vzeroupper is preferred.
* sysdeps/x86_64/multiarch/stpcpy-avx2.S: New file
* sysdeps/x86_64/multiarch/stpncpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strcpy-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncat-avx2.S: Likewise
* sysdeps/x86_64/multiarch/strncpy-avx2.S: Likewise
2018-10-08 13:59:50 +00:00
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jz L(ExitZero)
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# endif
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mov %rsi, %rcx
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# ifndef USE_AS_STPCPY
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mov %rdi, %rax /* save result */
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# endif
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# endif
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vpxor %xmmZ, %xmmZ, %xmmZ
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and $((VEC_SIZE * 4) - 1), %ecx
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cmp $(VEC_SIZE * 2), %ecx
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jbe L(SourceStringAlignmentLessTwoVecSize)
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and $-VEC_SIZE, %rsi
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and $(VEC_SIZE - 1), %ecx
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vpcmpeqb (%rsi), %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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shr %cl, %rdx
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# ifdef USE_AS_STRNCPY
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# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
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mov $VEC_SIZE, %r10
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sub %rcx, %r10
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cmp %r10, %r8
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# else
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mov $(VEC_SIZE + 1), %r10
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sub %rcx, %r10
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cmp %r10, %r8
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# endif
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jbe L(CopyVecSizeTailCase2OrCase3)
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# endif
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test %edx, %edx
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jnz L(CopyVecSizeTail)
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vpcmpeqb VEC_SIZE(%rsi), %ymmZ, %ymm2
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vpmovmskb %ymm2, %edx
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# ifdef USE_AS_STRNCPY
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add $VEC_SIZE, %r10
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cmp %r10, %r8
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jbe L(CopyTwoVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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jnz L(CopyTwoVecSize)
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vmovdqu (%rsi, %rcx), %ymm2 /* copy VEC_SIZE bytes */
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vmovdqu %ymm2, (%rdi)
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/* If source address alignment != destination address alignment */
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.p2align 4
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L(UnalignVecSizeBoth):
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sub %rcx, %rdi
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# ifdef USE_AS_STRNCPY
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add %rcx, %r8
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sbb %rcx, %rcx
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or %rcx, %r8
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# endif
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mov $VEC_SIZE, %rcx
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vmovdqa (%rsi, %rcx), %ymm2
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vmovdqu %ymm2, (%rdi, %rcx)
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vmovdqa VEC_SIZE(%rsi, %rcx), %ymm2
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vpcmpeqb %ymm2, %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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add $VEC_SIZE, %rcx
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# ifdef USE_AS_STRNCPY
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sub $(VEC_SIZE * 3), %r8
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jbe L(CopyVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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jnz L(CopyVecSizeUnalignedVec2)
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# else
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jnz L(CopyVecSize)
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# endif
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vmovdqu %ymm2, (%rdi, %rcx)
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vmovdqa VEC_SIZE(%rsi, %rcx), %ymm3
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vpcmpeqb %ymm3, %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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add $VEC_SIZE, %rcx
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# ifdef USE_AS_STRNCPY
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sub $VEC_SIZE, %r8
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jbe L(CopyVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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jnz L(CopyVecSizeUnalignedVec3)
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# else
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jnz L(CopyVecSize)
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# endif
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vmovdqu %ymm3, (%rdi, %rcx)
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vmovdqa VEC_SIZE(%rsi, %rcx), %ymm4
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vpcmpeqb %ymm4, %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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add $VEC_SIZE, %rcx
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# ifdef USE_AS_STRNCPY
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sub $VEC_SIZE, %r8
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jbe L(CopyVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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jnz L(CopyVecSizeUnalignedVec4)
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# else
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jnz L(CopyVecSize)
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# endif
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vmovdqu %ymm4, (%rdi, %rcx)
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vmovdqa VEC_SIZE(%rsi, %rcx), %ymm2
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vpcmpeqb %ymm2, %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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add $VEC_SIZE, %rcx
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# ifdef USE_AS_STRNCPY
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sub $VEC_SIZE, %r8
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jbe L(CopyVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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jnz L(CopyVecSizeUnalignedVec2)
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# else
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jnz L(CopyVecSize)
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# endif
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vmovdqu %ymm2, (%rdi, %rcx)
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vmovdqa VEC_SIZE(%rsi, %rcx), %ymm2
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vpcmpeqb %ymm2, %ymmZ, %ymmM
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vpmovmskb %ymmM, %edx
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add $VEC_SIZE, %rcx
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# ifdef USE_AS_STRNCPY
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sub $VEC_SIZE, %r8
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jbe L(CopyVecSizeCase2OrCase3)
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# endif
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test %edx, %edx
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# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
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jnz L(CopyVecSizeUnalignedVec2)
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# else
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jnz L(CopyVecSize)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
vmovdqa VEC_SIZE(%rsi, %rcx), %ymm3
|
|
|
|
|
vmovdqu %ymm2, (%rdi, %rcx)
|
|
|
|
|
vpcmpeqb %ymm3, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
add $VEC_SIZE, %rcx
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jbe L(CopyVecSizeCase2OrCase3)
|
|
|
|
|
# endif
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
jnz L(CopyVecSizeUnalignedVec3)
|
|
|
|
|
# else
|
|
|
|
|
jnz L(CopyVecSize)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
vmovdqu %ymm3, (%rdi, %rcx)
|
|
|
|
|
mov %rsi, %rdx
|
|
|
|
|
lea VEC_SIZE(%rsi, %rcx), %rsi
|
|
|
|
|
and $-(VEC_SIZE * 4), %rsi
|
|
|
|
|
sub %rsi, %rdx
|
|
|
|
|
sub %rdx, %rdi
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
lea (VEC_SIZE * 8)(%r8, %rdx), %r8
|
|
|
|
|
# endif
|
|
|
|
|
L(UnalignedFourVecSizeLoop):
|
|
|
|
|
vmovdqa (%rsi), %ymm4
|
|
|
|
|
vmovdqa VEC_SIZE(%rsi), %ymm5
|
|
|
|
|
vmovdqa (VEC_SIZE * 2)(%rsi), %ymm6
|
|
|
|
|
vmovdqa (VEC_SIZE * 3)(%rsi), %ymm7
|
|
|
|
|
vpminub %ymm5, %ymm4, %ymm2
|
|
|
|
|
vpminub %ymm7, %ymm6, %ymm3
|
|
|
|
|
vpminub %ymm2, %ymm3, %ymm3
|
|
|
|
|
vpcmpeqb %ymmM, %ymm3, %ymm3
|
|
|
|
|
vpmovmskb %ymm3, %edx
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
sub $(VEC_SIZE * 4), %r8
|
|
|
|
|
jbe L(UnalignedLeaveCase2OrCase3)
|
|
|
|
|
# endif
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jnz L(UnalignedFourVecSizeLeave)
|
|
|
|
|
|
|
|
|
|
L(UnalignedFourVecSizeLoop_start):
|
|
|
|
|
add $(VEC_SIZE * 4), %rdi
|
|
|
|
|
add $(VEC_SIZE * 4), %rsi
|
|
|
|
|
vmovdqu %ymm4, -(VEC_SIZE * 4)(%rdi)
|
|
|
|
|
vmovdqa (%rsi), %ymm4
|
|
|
|
|
vmovdqu %ymm5, -(VEC_SIZE * 3)(%rdi)
|
|
|
|
|
vmovdqa VEC_SIZE(%rsi), %ymm5
|
|
|
|
|
vpminub %ymm5, %ymm4, %ymm2
|
|
|
|
|
vmovdqu %ymm6, -(VEC_SIZE * 2)(%rdi)
|
|
|
|
|
vmovdqa (VEC_SIZE * 2)(%rsi), %ymm6
|
|
|
|
|
vmovdqu %ymm7, -VEC_SIZE(%rdi)
|
|
|
|
|
vmovdqa (VEC_SIZE * 3)(%rsi), %ymm7
|
|
|
|
|
vpminub %ymm7, %ymm6, %ymm3
|
|
|
|
|
vpminub %ymm2, %ymm3, %ymm3
|
|
|
|
|
vpcmpeqb %ymmM, %ymm3, %ymm3
|
|
|
|
|
vpmovmskb %ymm3, %edx
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
sub $(VEC_SIZE * 4), %r8
|
|
|
|
|
jbe L(UnalignedLeaveCase2OrCase3)
|
|
|
|
|
# endif
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jz L(UnalignedFourVecSizeLoop_start)
|
|
|
|
|
|
|
|
|
|
L(UnalignedFourVecSizeLeave):
|
|
|
|
|
vpcmpeqb %ymm4, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jnz L(CopyVecSizeUnaligned_0)
|
|
|
|
|
|
|
|
|
|
vpcmpeqb %ymm5, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %ecx
|
|
|
|
|
test %ecx, %ecx
|
|
|
|
|
jnz L(CopyVecSizeUnaligned_16)
|
|
|
|
|
|
|
|
|
|
vpcmpeqb %ymm6, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jnz L(CopyVecSizeUnaligned_32)
|
|
|
|
|
|
|
|
|
|
vpcmpeqb %ymm7, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %ecx
|
|
|
|
|
bsf %ecx, %edx
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
vmovdqu %ymm5, VEC_SIZE(%rdi)
|
|
|
|
|
vmovdqu %ymm6, (VEC_SIZE * 2)(%rdi)
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (VEC_SIZE * 3)(%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
vmovdqu %ymm7, (VEC_SIZE * 3)(%rdi)
|
|
|
|
|
add $(VEC_SIZE - 1), %r8
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
lea ((VEC_SIZE * 3) + 1)(%rdi, %rdx), %rdi
|
|
|
|
|
jmp L(StrncpyFillTailWithZero)
|
|
|
|
|
# else
|
|
|
|
|
add $(VEC_SIZE * 3), %rsi
|
|
|
|
|
add $(VEC_SIZE * 3), %rdi
|
|
|
|
|
jmp L(CopyVecSizeExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
/* If source address alignment == destination address alignment */
|
|
|
|
|
|
|
|
|
|
L(SourceStringAlignmentLessTwoVecSize):
|
|
|
|
|
vmovdqu (%rsi), %ymm3
|
|
|
|
|
vmovdqu VEC_SIZE(%rsi), %ymm2
|
|
|
|
|
vpcmpeqb %ymm3, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
|
|
|
|
|
cmp $VEC_SIZE, %r8
|
|
|
|
|
# else
|
|
|
|
|
cmp $(VEC_SIZE + 1), %r8
|
|
|
|
|
# endif
|
|
|
|
|
jbe L(CopyVecSizeTail1Case2OrCase3)
|
|
|
|
|
# endif
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jnz L(CopyVecSizeTail1)
|
|
|
|
|
|
|
|
|
|
vmovdqu %ymm3, (%rdi)
|
|
|
|
|
vpcmpeqb %ymm2, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
# if defined USE_AS_STPCPY || defined USE_AS_STRCAT
|
|
|
|
|
cmp $(VEC_SIZE * 2), %r8
|
|
|
|
|
# else
|
|
|
|
|
cmp $((VEC_SIZE * 2) + 1), %r8
|
|
|
|
|
# endif
|
|
|
|
|
jbe L(CopyTwoVecSize1Case2OrCase3)
|
|
|
|
|
# endif
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
jnz L(CopyTwoVecSize1)
|
|
|
|
|
|
|
|
|
|
and $-VEC_SIZE, %rsi
|
|
|
|
|
and $(VEC_SIZE - 1), %ecx
|
|
|
|
|
jmp L(UnalignVecSizeBoth)
|
|
|
|
|
|
|
|
|
|
/*------End of main part with loops---------------------*/
|
|
|
|
|
|
|
|
|
|
/* Case1 */
|
|
|
|
|
|
|
|
|
|
# if (!defined USE_AS_STRNCPY) || (defined USE_AS_STRCAT)
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSize):
|
|
|
|
|
add %rcx, %rdi
|
|
|
|
|
# endif
|
|
|
|
|
L(CopyVecSizeTail):
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
L(CopyVecSizeTail1):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
L(CopyVecSizeExit):
|
|
|
|
|
cmp $32, %edx
|
|
|
|
|
jae L(Exit32_63)
|
|
|
|
|
cmp $16, %edx
|
|
|
|
|
jae L(Exit16_31)
|
|
|
|
|
cmp $8, %edx
|
|
|
|
|
jae L(Exit8_15)
|
|
|
|
|
cmp $4, %edx
|
|
|
|
|
jae L(Exit4_7)
|
|
|
|
|
cmp $3, %edx
|
|
|
|
|
je L(Exit3)
|
|
|
|
|
cmp $1, %edx
|
|
|
|
|
ja L(Exit2)
|
|
|
|
|
je L(Exit1)
|
|
|
|
|
movb $0, (%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub $1, %r8
|
|
|
|
|
lea 1(%rdi), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyTwoVecSize1):
|
|
|
|
|
add $VEC_SIZE, %rsi
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
# endif
|
|
|
|
|
jmp L(CopyVecSizeTail1)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyTwoVecSize):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
add $VEC_SIZE, %edx
|
|
|
|
|
sub %ecx, %edx
|
|
|
|
|
jmp L(CopyVecSizeExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnaligned_0):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
add $((VEC_SIZE * 4) - 1), %r8
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
jmp L(StrncpyFillTailWithZero)
|
|
|
|
|
# else
|
|
|
|
|
jmp L(CopyVecSizeExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnaligned_16):
|
|
|
|
|
bsf %ecx, %edx
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea VEC_SIZE(%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
vmovdqu %ymm5, VEC_SIZE(%rdi)
|
|
|
|
|
add $((VEC_SIZE * 3) - 1), %r8
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
lea (VEC_SIZE + 1)(%rdi, %rdx), %rdi
|
|
|
|
|
jmp L(StrncpyFillTailWithZero)
|
|
|
|
|
# else
|
|
|
|
|
add $VEC_SIZE, %rsi
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
jmp L(CopyVecSizeExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnaligned_32):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
vmovdqu %ymm5, VEC_SIZE(%rdi)
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (VEC_SIZE * 2)(%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
vmovdqu %ymm6, (VEC_SIZE * 2)(%rdi)
|
|
|
|
|
add $((VEC_SIZE * 2) - 1), %r8
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
lea ((VEC_SIZE * 2) + 1)(%rdi, %rdx), %rdi
|
|
|
|
|
jmp L(StrncpyFillTailWithZero)
|
|
|
|
|
# else
|
|
|
|
|
add $(VEC_SIZE * 2), %rsi
|
|
|
|
|
add $(VEC_SIZE * 2), %rdi
|
|
|
|
|
jmp L(CopyVecSizeExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnalignedVec6):
|
|
|
|
|
vmovdqu %ymm6, (%rdi, %rcx)
|
|
|
|
|
jmp L(CopyVecSizeVecExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnalignedVec5):
|
|
|
|
|
vmovdqu %ymm5, (%rdi, %rcx)
|
|
|
|
|
jmp L(CopyVecSizeVecExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnalignedVec4):
|
|
|
|
|
vmovdqu %ymm4, (%rdi, %rcx)
|
|
|
|
|
jmp L(CopyVecSizeVecExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnalignedVec3):
|
|
|
|
|
vmovdqu %ymm3, (%rdi, %rcx)
|
|
|
|
|
jmp L(CopyVecSizeVecExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
/* Case2 */
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeCase2):
|
|
|
|
|
add $VEC_SIZE, %r8
|
|
|
|
|
add %rcx, %rdi
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
cmp %r8d, %edx
|
|
|
|
|
jb L(CopyVecSizeExit)
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyTwoVecSizeCase2):
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
add $VEC_SIZE, %edx
|
|
|
|
|
sub %ecx, %edx
|
|
|
|
|
cmp %r8d, %edx
|
|
|
|
|
jb L(CopyVecSizeExit)
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
L(CopyVecSizeTailCase2):
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
cmp %r8d, %edx
|
|
|
|
|
jb L(CopyVecSizeExit)
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
L(CopyVecSizeTail1Case2):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
cmp %r8d, %edx
|
|
|
|
|
jb L(CopyVecSizeExit)
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
/* Case2 or Case3, Case3 */
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeCase2OrCase3):
|
|
|
|
|
test %rdx, %rdx
|
|
|
|
|
jnz L(CopyVecSizeCase2)
|
|
|
|
|
L(CopyVecSizeCase3):
|
|
|
|
|
add $VEC_SIZE, %r8
|
|
|
|
|
add %rcx, %rdi
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyTwoVecSizeCase2OrCase3):
|
|
|
|
|
test %rdx, %rdx
|
|
|
|
|
jnz L(CopyTwoVecSizeCase2)
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeTailCase2OrCase3):
|
|
|
|
|
test %rdx, %rdx
|
|
|
|
|
jnz L(CopyVecSizeTailCase2)
|
|
|
|
|
add %rcx, %rsi
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyTwoVecSize1Case2OrCase3):
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
add $VEC_SIZE, %rsi
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
L(CopyVecSizeTail1Case2OrCase3):
|
|
|
|
|
test %rdx, %rdx
|
|
|
|
|
jnz L(CopyVecSizeTail1Case2)
|
|
|
|
|
jmp L(StrncpyExit)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
/*------------End labels regarding with copying 1-VEC_SIZE bytes--and 1-(VEC_SIZE*2) bytes----*/
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit1):
|
|
|
|
|
movzwl (%rsi), %edx
|
|
|
|
|
mov %dx, (%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 1(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub $2, %r8
|
|
|
|
|
lea 2(%rdi), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit2):
|
|
|
|
|
movzwl (%rsi), %ecx
|
|
|
|
|
mov %cx, (%rdi)
|
|
|
|
|
movb $0, 2(%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 2(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub $3, %r8
|
|
|
|
|
lea 3(%rdi), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit3):
|
|
|
|
|
mov (%rsi), %edx
|
|
|
|
|
mov %edx, (%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 3(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub $4, %r8
|
|
|
|
|
lea 4(%rdi), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit4_7):
|
|
|
|
|
mov (%rsi), %ecx
|
|
|
|
|
mov %ecx, (%rdi)
|
|
|
|
|
mov -3(%rsi, %rdx), %ecx
|
|
|
|
|
mov %ecx, -3(%rdi, %rdx)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
sub $1, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit8_15):
|
|
|
|
|
mov (%rsi), %rcx
|
|
|
|
|
mov -7(%rsi, %rdx), %r9
|
|
|
|
|
mov %rcx, (%rdi)
|
|
|
|
|
mov %r9, -7(%rdi, %rdx)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
sub $1, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit16_31):
|
|
|
|
|
vmovdqu (%rsi), %xmm2
|
|
|
|
|
vmovdqu -15(%rsi, %rdx), %xmm3
|
|
|
|
|
vmovdqu %xmm2, (%rdi)
|
|
|
|
|
vmovdqu %xmm3, -15(%rdi, %rdx)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
sub $1, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Exit32_63):
|
|
|
|
|
vmovdqu (%rsi), %ymm2
|
|
|
|
|
vmovdqu -31(%rsi, %rdx), %ymm3
|
|
|
|
|
vmovdqu %ymm2, (%rdi)
|
|
|
|
|
vmovdqu %ymm3, -31(%rdi, %rdx)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# if defined USE_AS_STRNCPY && !defined USE_AS_STRCAT
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
sub $1, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
jnz L(StrncpyFillTailWithZero)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
# ifdef USE_AS_STRNCPY
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit1):
|
|
|
|
|
movzbl (%rsi), %edx
|
|
|
|
|
mov %dl, (%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 1(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, 1(%rdi)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit2):
|
|
|
|
|
movzwl (%rsi), %edx
|
|
|
|
|
mov %dx, (%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 2(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, 2(%rdi)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit3_4):
|
|
|
|
|
movzwl (%rsi), %ecx
|
|
|
|
|
movzwl -2(%rsi, %r8), %edx
|
|
|
|
|
mov %cx, (%rdi)
|
|
|
|
|
mov %dx, -2(%rdi, %r8)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %r8), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi, %r8)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit5_8):
|
|
|
|
|
mov (%rsi), %ecx
|
|
|
|
|
mov -4(%rsi, %r8), %edx
|
|
|
|
|
mov %ecx, (%rdi)
|
|
|
|
|
mov %edx, -4(%rdi, %r8)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %r8), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi, %r8)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit9_16):
|
|
|
|
|
mov (%rsi), %rcx
|
|
|
|
|
mov -8(%rsi, %r8), %rdx
|
|
|
|
|
mov %rcx, (%rdi)
|
|
|
|
|
mov %rdx, -8(%rdi, %r8)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %r8), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi, %r8)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit17_32):
|
|
|
|
|
vmovdqu (%rsi), %xmm2
|
|
|
|
|
vmovdqu -16(%rsi, %r8), %xmm3
|
|
|
|
|
vmovdqu %xmm2, (%rdi)
|
|
|
|
|
vmovdqu %xmm3, -16(%rdi, %r8)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %r8), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi, %r8)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit33_64):
|
|
|
|
|
/* 0/32, 31/16 */
|
|
|
|
|
vmovdqu (%rsi), %ymm2
|
|
|
|
|
vmovdqu -VEC_SIZE(%rsi, %r8), %ymm3
|
|
|
|
|
vmovdqu %ymm2, (%rdi)
|
|
|
|
|
vmovdqu %ymm3, -VEC_SIZE(%rdi, %r8)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %r8), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi, %r8)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyExit65):
|
|
|
|
|
/* 0/32, 32/32, 64/1 */
|
|
|
|
|
vmovdqu (%rsi), %ymm2
|
|
|
|
|
vmovdqu 32(%rsi), %ymm3
|
|
|
|
|
mov 64(%rsi), %cl
|
|
|
|
|
vmovdqu %ymm2, (%rdi)
|
|
|
|
|
vmovdqu %ymm3, 32(%rdi)
|
|
|
|
|
mov %cl, 64(%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea 65(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, 65(%rdi)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill1):
|
|
|
|
|
mov %dl, (%rdi)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill2):
|
|
|
|
|
mov %dx, (%rdi)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill3_4):
|
|
|
|
|
mov %dx, (%rdi)
|
|
|
|
|
mov %dx, -2(%rdi, %r8)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill5_8):
|
|
|
|
|
mov %edx, (%rdi)
|
|
|
|
|
mov %edx, -4(%rdi, %r8)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill9_16):
|
|
|
|
|
mov %rdx, (%rdi)
|
|
|
|
|
mov %rdx, -8(%rdi, %r8)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(Fill17_32):
|
|
|
|
|
vmovdqu %xmmZ, (%rdi)
|
|
|
|
|
vmovdqu %xmmZ, -16(%rdi, %r8)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeUnalignedVec2):
|
|
|
|
|
vmovdqu %ymm2, (%rdi, %rcx)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(CopyVecSizeVecExit):
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
add $(VEC_SIZE - 1), %r8
|
|
|
|
|
add %rcx, %rdi
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (%rdi, %rdx), %rax
|
|
|
|
|
# endif
|
|
|
|
|
sub %rdx, %r8
|
|
|
|
|
lea 1(%rdi, %rdx), %rdi
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyFillTailWithZero):
|
|
|
|
|
xor %edx, %edx
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jbe L(StrncpyFillExit)
|
|
|
|
|
|
|
|
|
|
vmovdqu %ymmZ, (%rdi)
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
|
|
|
|
|
mov %rdi, %rsi
|
|
|
|
|
and $(VEC_SIZE - 1), %esi
|
|
|
|
|
sub %rsi, %rdi
|
|
|
|
|
add %rsi, %r8
|
|
|
|
|
sub $(VEC_SIZE * 4), %r8
|
|
|
|
|
jb L(StrncpyFillLessFourVecSize)
|
|
|
|
|
|
|
|
|
|
L(StrncpyFillLoopVmovdqa):
|
|
|
|
|
vmovdqa %ymmZ, (%rdi)
|
|
|
|
|
vmovdqa %ymmZ, VEC_SIZE(%rdi)
|
|
|
|
|
vmovdqa %ymmZ, (VEC_SIZE * 2)(%rdi)
|
|
|
|
|
vmovdqa %ymmZ, (VEC_SIZE * 3)(%rdi)
|
|
|
|
|
add $(VEC_SIZE * 4), %rdi
|
|
|
|
|
sub $(VEC_SIZE * 4), %r8
|
|
|
|
|
jae L(StrncpyFillLoopVmovdqa)
|
|
|
|
|
|
|
|
|
|
L(StrncpyFillLessFourVecSize):
|
|
|
|
|
add $(VEC_SIZE * 2), %r8
|
|
|
|
|
jl L(StrncpyFillLessTwoVecSize)
|
|
|
|
|
vmovdqa %ymmZ, (%rdi)
|
|
|
|
|
vmovdqa %ymmZ, VEC_SIZE(%rdi)
|
|
|
|
|
add $(VEC_SIZE * 2), %rdi
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jl L(StrncpyFillExit)
|
|
|
|
|
vmovdqa %ymmZ, (%rdi)
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
jmp L(Fill)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyFillLessTwoVecSize):
|
|
|
|
|
add $VEC_SIZE, %r8
|
|
|
|
|
jl L(StrncpyFillExit)
|
|
|
|
|
vmovdqa %ymmZ, (%rdi)
|
|
|
|
|
add $VEC_SIZE, %rdi
|
|
|
|
|
jmp L(Fill)
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(StrncpyFillExit):
|
|
|
|
|
add $VEC_SIZE, %r8
|
|
|
|
|
L(Fill):
|
|
|
|
|
cmp $17, %r8d
|
|
|
|
|
jae L(Fill17_32)
|
|
|
|
|
cmp $9, %r8d
|
|
|
|
|
jae L(Fill9_16)
|
|
|
|
|
cmp $5, %r8d
|
|
|
|
|
jae L(Fill5_8)
|
|
|
|
|
cmp $3, %r8d
|
|
|
|
|
jae L(Fill3_4)
|
|
|
|
|
cmp $1, %r8d
|
|
|
|
|
ja L(Fill2)
|
|
|
|
|
je L(Fill1)
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
/* end of ifndef USE_AS_STRCAT */
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(UnalignedLeaveCase2OrCase3):
|
|
|
|
|
test %rdx, %rdx
|
|
|
|
|
jnz L(UnalignedFourVecSizeLeaveCase2)
|
|
|
|
|
L(UnalignedFourVecSizeLeaveCase3):
|
|
|
|
|
lea (VEC_SIZE * 4)(%r8), %rcx
|
|
|
|
|
and $-VEC_SIZE, %rcx
|
|
|
|
|
add $(VEC_SIZE * 3), %r8
|
|
|
|
|
jl L(CopyVecSizeCase3)
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jb L(CopyVecSizeCase3)
|
|
|
|
|
vmovdqu %ymm5, VEC_SIZE(%rdi)
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jb L(CopyVecSizeCase3)
|
|
|
|
|
vmovdqu %ymm6, (VEC_SIZE * 2)(%rdi)
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jb L(CopyVecSizeCase3)
|
|
|
|
|
vmovdqu %ymm7, (VEC_SIZE * 3)(%rdi)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
lea (VEC_SIZE * 4)(%rdi), %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (VEC_SIZE * 4)(%rdi)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(UnalignedFourVecSizeLeaveCase2):
|
|
|
|
|
xor %ecx, %ecx
|
|
|
|
|
vpcmpeqb %ymm4, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
add $(VEC_SIZE * 3), %r8
|
|
|
|
|
jle L(CopyVecSizeCase2OrCase3)
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
jnz L(CopyVecSizeUnalignedVec4)
|
|
|
|
|
# else
|
|
|
|
|
jnz L(CopyVecSize)
|
|
|
|
|
# endif
|
|
|
|
|
vpcmpeqb %ymm5, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
vmovdqu %ymm4, (%rdi)
|
|
|
|
|
add $VEC_SIZE, %rcx
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jbe L(CopyVecSizeCase2OrCase3)
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
jnz L(CopyVecSizeUnalignedVec5)
|
|
|
|
|
# else
|
|
|
|
|
jnz L(CopyVecSize)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
vpcmpeqb %ymm6, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
vmovdqu %ymm5, VEC_SIZE(%rdi)
|
|
|
|
|
add $VEC_SIZE, %rcx
|
|
|
|
|
sub $VEC_SIZE, %r8
|
|
|
|
|
jbe L(CopyVecSizeCase2OrCase3)
|
|
|
|
|
test %edx, %edx
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
jnz L(CopyVecSizeUnalignedVec6)
|
|
|
|
|
# else
|
|
|
|
|
jnz L(CopyVecSize)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
vpcmpeqb %ymm7, %ymmZ, %ymmM
|
|
|
|
|
vpmovmskb %ymmM, %edx
|
|
|
|
|
vmovdqu %ymm6, (VEC_SIZE * 2)(%rdi)
|
|
|
|
|
lea VEC_SIZE(%rdi, %rcx), %rdi
|
|
|
|
|
lea VEC_SIZE(%rsi, %rcx), %rsi
|
|
|
|
|
bsf %edx, %edx
|
|
|
|
|
cmp %r8d, %edx
|
|
|
|
|
jb L(CopyVecSizeExit)
|
|
|
|
|
L(StrncpyExit):
|
|
|
|
|
cmp $65, %r8d
|
|
|
|
|
je L(StrncpyExit65)
|
|
|
|
|
cmp $33, %r8d
|
|
|
|
|
jae L(StrncpyExit33_64)
|
|
|
|
|
cmp $17, %r8d
|
|
|
|
|
jae L(StrncpyExit17_32)
|
|
|
|
|
cmp $9, %r8d
|
|
|
|
|
jae L(StrncpyExit9_16)
|
|
|
|
|
cmp $5, %r8d
|
|
|
|
|
jae L(StrncpyExit5_8)
|
|
|
|
|
cmp $3, %r8d
|
|
|
|
|
jae L(StrncpyExit3_4)
|
|
|
|
|
cmp $1, %r8d
|
|
|
|
|
ja L(StrncpyExit2)
|
|
|
|
|
je L(StrncpyExit1)
|
|
|
|
|
# ifdef USE_AS_STPCPY
|
|
|
|
|
mov %rdi, %rax
|
|
|
|
|
# endif
|
|
|
|
|
# ifdef USE_AS_STRCAT
|
|
|
|
|
movb $0, (%rdi)
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
.p2align 4
|
|
|
|
|
L(ExitZero):
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
mov %rdi, %rax
|
|
|
|
|
# endif
|
|
|
|
|
VZEROUPPER
|
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# ifndef USE_AS_STRCAT
|
|
|
|
|
END (STRCPY)
|
|
|
|
|
# else
|
|
|
|
|
END (STRCAT)
|
|
|
|
|
# endif
|
|
|
|
|
#endif
|
