mirror of git://sourceware.org/git/glibc.git
x86: Add AVX2 optimized str{n}casecmp
geometric_mean(N=40) of all benchmarks AVX2 / SSE42: .702 All string/memory tests pass. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
Noah Goldstein
parent
39399913a2
commit
bbf8122234
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@ -55,6 +55,8 @@ sysdep_routines += \
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stpncpy-sse2-unaligned \
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stpncpy-ssse3 \
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strcasecmp_l-avx \
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strcasecmp_l-avx2 \
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strcasecmp_l-avx2-rtm \
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strcasecmp_l-sse2 \
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strcasecmp_l-sse4_2 \
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strcasecmp_l-ssse3 \
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@ -93,6 +95,8 @@ sysdep_routines += \
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strlen-evex \
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strlen-sse2 \
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strncase_l-avx \
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strncase_l-avx2 \
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strncase_l-avx2-rtm \
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strncase_l-sse2 \
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strncase_l-sse4_2 \
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strncase_l-ssse3 \
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@ -436,6 +436,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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/* Support sysdeps/x86_64/multiarch/strcasecmp_l.c. */
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IFUNC_IMPL (i, name, strcasecmp,
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IFUNC_IMPL_ADD (array, i, strcasecmp,
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CPU_FEATURE_USABLE (AVX2),
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__strcasecmp_avx2)
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IFUNC_IMPL_ADD (array, i, strcasecmp,
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(CPU_FEATURE_USABLE (AVX2)
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&& CPU_FEATURE_USABLE (RTM)),
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__strcasecmp_avx2_rtm)
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IFUNC_IMPL_ADD (array, i, strcasecmp,
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CPU_FEATURE_USABLE (AVX),
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__strcasecmp_avx)
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@ -449,6 +456,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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/* Support sysdeps/x86_64/multiarch/strcasecmp_l.c. */
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IFUNC_IMPL (i, name, strcasecmp_l,
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IFUNC_IMPL_ADD (array, i, strcasecmp,
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CPU_FEATURE_USABLE (AVX2),
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__strcasecmp_l_avx2)
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IFUNC_IMPL_ADD (array, i, strcasecmp,
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(CPU_FEATURE_USABLE (AVX2)
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&& CPU_FEATURE_USABLE (RTM)),
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__strcasecmp_l_avx2_rtm)
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IFUNC_IMPL_ADD (array, i, strcasecmp_l,
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CPU_FEATURE_USABLE (AVX),
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__strcasecmp_l_avx)
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@ -576,6 +590,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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/* Support sysdeps/x86_64/multiarch/strncase_l.c. */
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IFUNC_IMPL (i, name, strncasecmp,
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IFUNC_IMPL_ADD (array, i, strncasecmp,
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CPU_FEATURE_USABLE (AVX2),
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__strncasecmp_avx2)
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IFUNC_IMPL_ADD (array, i, strncasecmp,
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(CPU_FEATURE_USABLE (AVX2)
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&& CPU_FEATURE_USABLE (RTM)),
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__strncasecmp_avx2_rtm)
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IFUNC_IMPL_ADD (array, i, strncasecmp,
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CPU_FEATURE_USABLE (AVX),
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__strncasecmp_avx)
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@ -590,6 +611,13 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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/* Support sysdeps/x86_64/multiarch/strncase_l.c. */
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IFUNC_IMPL (i, name, strncasecmp_l,
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IFUNC_IMPL_ADD (array, i, strncasecmp,
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CPU_FEATURE_USABLE (AVX2),
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__strncasecmp_l_avx2)
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IFUNC_IMPL_ADD (array, i, strncasecmp,
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(CPU_FEATURE_USABLE (AVX2)
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&& CPU_FEATURE_USABLE (RTM)),
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__strncasecmp_l_avx2_rtm)
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IFUNC_IMPL_ADD (array, i, strncasecmp_l,
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CPU_FEATURE_USABLE (AVX),
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__strncasecmp_l_avx)
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@ -23,12 +23,24 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (avx) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden;
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extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden;
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static inline void *
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IFUNC_SELECTOR (void)
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{
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const struct cpu_features* cpu_features = __get_cpu_features ();
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if (CPU_FEATURE_USABLE_P (cpu_features, AVX2)
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&& CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load))
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{
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if (CPU_FEATURE_USABLE_P (cpu_features, RTM))
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return OPTIMIZE (avx2_rtm);
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if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER))
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return OPTIMIZE (avx2);
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}
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if (CPU_FEATURE_USABLE_P (cpu_features, AVX))
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return OPTIMIZE (avx);
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@ -0,0 +1,15 @@
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#ifndef STRCMP
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# define STRCMP __strcasecmp_l_avx2_rtm
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#endif
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#define _GLABEL(x) x ## _rtm
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#define GLABEL(x) _GLABEL(x)
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#define ZERO_UPPER_VEC_REGISTERS_RETURN \
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ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST
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#define VZEROUPPER_RETURN jmp L(return_vzeroupper)
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#define SECTION(p) p##.avx.rtm
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#include "strcasecmp_l-avx2.S"
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@ -0,0 +1,23 @@
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/* strcasecmp_l optimized with AVX2.
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Copyright (C) 2017-2022 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, see
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<https://www.gnu.org/licenses/>. */
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#ifndef STRCMP
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# define STRCMP __strcasecmp_l_avx2
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#endif
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#define USE_AS_STRCASECMP_L
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#include "strcmp-avx2.S"
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@ -20,6 +20,10 @@
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# include <sysdep.h>
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# if defined USE_AS_STRCASECMP_L
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# include "locale-defines.h"
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# endif
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# ifndef STRCMP
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# define STRCMP __strcmp_avx2
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# endif
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@ -74,13 +78,88 @@
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# define VEC_OFFSET (-VEC_SIZE)
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# endif
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# ifdef USE_AS_STRCASECMP_L
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# define BYTE_LOOP_REG OFFSET_REG
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# else
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# define BYTE_LOOP_REG ecx
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# endif
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# ifdef USE_AS_STRCASECMP_L
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# ifdef USE_AS_STRNCMP
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# define STRCASECMP __strncasecmp_avx2
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# define LOCALE_REG rcx
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# define LOCALE_REG_LP RCX_LP
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# define STRCASECMP_NONASCII __strncasecmp_l_nonascii
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# else
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# define STRCASECMP __strcasecmp_avx2
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# define LOCALE_REG rdx
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# define LOCALE_REG_LP RDX_LP
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# define STRCASECMP_NONASCII __strcasecmp_l_nonascii
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# endif
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# endif
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# define xmmZERO xmm15
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# define ymmZERO ymm15
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# define LCASE_MIN_ymm %ymm10
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# define LCASE_MAX_ymm %ymm11
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# define CASE_ADD_ymm %ymm12
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# define LCASE_MIN_xmm %xmm10
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# define LCASE_MAX_xmm %xmm11
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# define CASE_ADD_xmm %xmm12
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/* r11 is never use elsewhere so this is safe to maintain. */
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# define TOLOWER_BASE %r11
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# ifndef SECTION
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# define SECTION(p) p##.avx
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# endif
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# ifdef USE_AS_STRCASECMP_L
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# define REG(x, y) x ## y
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# define TOLOWER(reg1_in, reg1_out, reg2_in, reg2_out, ext) \
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vpaddb REG(LCASE_MIN_, ext), reg1_in, REG(%ext, 8); \
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vpaddb REG(LCASE_MIN_, ext), reg2_in, REG(%ext, 9); \
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vpcmpgtb REG(LCASE_MAX_, ext), REG(%ext, 8), REG(%ext, 8); \
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vpcmpgtb REG(LCASE_MAX_, ext), REG(%ext, 9), REG(%ext, 9); \
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vpandn REG(CASE_ADD_, ext), REG(%ext, 8), REG(%ext, 8); \
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vpandn REG(CASE_ADD_, ext), REG(%ext, 9), REG(%ext, 9); \
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vpaddb REG(%ext, 8), reg1_in, reg1_out; \
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vpaddb REG(%ext, 9), reg2_in, reg2_out
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# define TOLOWER_gpr(src, dst) movl (TOLOWER_BASE, src, 4), dst
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# define TOLOWER_ymm(...) TOLOWER(__VA_ARGS__, ymm)
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# define TOLOWER_xmm(...) TOLOWER(__VA_ARGS__, xmm)
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# define CMP_R1_R2(s1_reg, s2_reg, scratch_reg, reg_out, ext) \
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TOLOWER (s1_reg, scratch_reg, s2_reg, s2_reg, ext); \
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VPCMPEQ scratch_reg, s2_reg, reg_out
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# define CMP_R1_S2(s1_reg, s2_mem, scratch_reg, reg_out, ext) \
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VMOVU s2_mem, reg_out; \
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CMP_R1_R2(s1_reg, reg_out, scratch_reg, reg_out, ext)
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# define CMP_R1_R2_ymm(...) CMP_R1_R2(__VA_ARGS__, ymm)
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# define CMP_R1_R2_xmm(...) CMP_R1_R2(__VA_ARGS__, xmm)
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# define CMP_R1_S2_ymm(...) CMP_R1_S2(__VA_ARGS__, ymm)
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# define CMP_R1_S2_xmm(...) CMP_R1_S2(__VA_ARGS__, xmm)
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# else
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# define TOLOWER_gpr(...)
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# define TOLOWER_ymm(...)
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# define TOLOWER_xmm(...)
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# define CMP_R1_R2_ymm(s1_reg, s2_reg, scratch_reg, reg_out) \
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VPCMPEQ s2_reg, s1_reg, reg_out
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# define CMP_R1_R2_xmm(...) CMP_R1_R2_ymm(__VA_ARGS__)
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# define CMP_R1_S2_ymm(...) CMP_R1_R2_ymm(__VA_ARGS__)
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# define CMP_R1_S2_xmm(...) CMP_R1_R2_xmm(__VA_ARGS__)
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# endif
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/* Warning!
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wcscmp/wcsncmp have to use SIGNED comparison for elements.
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strcmp/strncmp have to use UNSIGNED comparison for elements.
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@ -102,8 +181,49 @@
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returned. */
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.section SECTION(.text), "ax", @progbits
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ENTRY(STRCMP)
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.align 16
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.type STRCMP, @function
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.globl STRCMP
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.hidden STRCMP
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# ifndef GLABEL
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# define GLABEL(...) __VA_ARGS__
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# endif
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# ifdef USE_AS_STRCASECMP_L
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ENTRY (GLABEL(STRCASECMP))
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movq __libc_tsd_LOCALE@gottpoff(%rip), %rax
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mov %fs:(%rax), %LOCALE_REG_LP
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/* Either 1 or 5 bytes (dependeing if CET is enabled). */
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.p2align 4
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END (GLABEL(STRCASECMP))
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/* FALLTHROUGH to strcasecmp/strncasecmp_l. */
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# endif
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.p2align 4
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STRCMP:
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cfi_startproc
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_CET_ENDBR
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CALL_MCOUNT
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# if defined USE_AS_STRCASECMP_L
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/* We have to fall back on the C implementation for locales with
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encodings not matching ASCII for single bytes. */
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# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
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mov LOCALE_T___LOCALES + LC_CTYPE * LP_SIZE(%LOCALE_REG), %RAX_LP
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# else
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mov (%LOCALE_REG), %RAX_LP
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# endif
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testl $1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
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jne STRCASECMP_NONASCII
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leaq _nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
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# endif
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# ifdef USE_AS_STRNCMP
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/* Don't overwrite LOCALE_REG (rcx) until we have pass
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L(one_or_less). Otherwise we might use the wrong locale in
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the OVERFLOW_STRCMP (strcasecmp_l). */
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# ifdef __ILP32__
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/* Clear the upper 32 bits. */
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movl %edx, %edx
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@ -128,6 +248,30 @@ ENTRY(STRCMP)
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# endif
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# endif
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vpxor %xmmZERO, %xmmZERO, %xmmZERO
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# if defined USE_AS_STRCASECMP_L
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.section .rodata.cst32, "aM", @progbits, 32
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.align 32
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L(lcase_min):
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.quad 0x3f3f3f3f3f3f3f3f
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.quad 0x3f3f3f3f3f3f3f3f
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.quad 0x3f3f3f3f3f3f3f3f
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.quad 0x3f3f3f3f3f3f3f3f
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L(lcase_max):
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.quad 0x9999999999999999
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.quad 0x9999999999999999
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.quad 0x9999999999999999
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.quad 0x9999999999999999
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L(case_add):
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.quad 0x2020202020202020
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.quad 0x2020202020202020
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.quad 0x2020202020202020
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.quad 0x2020202020202020
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.previous
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vmovdqa L(lcase_min)(%rip), LCASE_MIN_ymm
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vmovdqa L(lcase_max)(%rip), LCASE_MAX_ymm
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vmovdqa L(case_add)(%rip), CASE_ADD_ymm
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# endif
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movl %edi, %eax
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orl %esi, %eax
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sall $20, %eax
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@ -138,8 +282,10 @@ ENTRY(STRCMP)
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L(no_page_cross):
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/* Safe to compare 4x vectors. */
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VMOVU (%rdi), %ymm0
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/* 1s where s1 and s2 equal. */
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VPCMPEQ (%rsi), %ymm0, %ymm1
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/* 1s where s1 and s2 equal. Just VPCMPEQ if its not strcasecmp.
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Otherwise converts ymm0 and load from rsi to lower. ymm2 is
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scratch and ymm1 is the return. */
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CMP_R1_S2_ymm (%ymm0, (%rsi), %ymm2, %ymm1)
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/* 1s at null CHAR. */
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VPCMPEQ %ymm0, %ymmZERO, %ymm2
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/* 1s where s1 and s2 equal AND not null CHAR. */
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@ -172,6 +318,8 @@ L(return_vec_0):
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# else
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movzbl (%rdi, %rcx), %eax
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movzbl (%rsi, %rcx), %ecx
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TOLOWER_gpr (%rax, %eax)
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TOLOWER_gpr (%rcx, %ecx)
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subl %ecx, %eax
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# endif
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L(ret0):
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@ -192,6 +340,10 @@ L(ret_zero):
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.p2align 4,, 5
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L(one_or_less):
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# ifdef USE_AS_STRCASECMP_L
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/* Set locale argument for strcasecmp. */
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movq %LOCALE_REG, %rdx
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# endif
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jb L(ret_zero)
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/* 'nbe' covers the case where length is negative (large
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unsigned). */
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@ -207,6 +359,8 @@ L(one_or_less):
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# else
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movzbl (%rdi), %eax
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movzbl (%rsi), %ecx
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TOLOWER_gpr (%rax, %eax)
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TOLOWER_gpr (%rcx, %ecx)
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subl %ecx, %eax
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# endif
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L(ret1):
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@ -234,6 +388,8 @@ L(return_vec_1):
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# else
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movzbl VEC_SIZE(%rdi, %rcx), %eax
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movzbl VEC_SIZE(%rsi, %rcx), %ecx
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TOLOWER_gpr (%rax, %eax)
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TOLOWER_gpr (%rcx, %ecx)
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subl %ecx, %eax
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# endif
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L(ret2):
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@ -265,6 +421,8 @@ L(return_vec_2):
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# else
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movzbl (VEC_SIZE * 2)(%rdi, %rcx), %eax
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movzbl (VEC_SIZE * 2)(%rsi, %rcx), %ecx
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TOLOWER_gpr (%rax, %eax)
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TOLOWER_gpr (%rcx, %ecx)
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subl %ecx, %eax
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# endif
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L(ret3):
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@ -285,6 +443,8 @@ L(return_vec_3):
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# else
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movzbl (VEC_SIZE * 3)(%rdi, %rcx), %eax
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movzbl (VEC_SIZE * 3)(%rsi, %rcx), %ecx
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TOLOWER_gpr (%rax, %eax)
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TOLOWER_gpr (%rcx, %ecx)
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subl %ecx, %eax
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# endif
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L(ret4):
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@ -295,7 +455,7 @@ L(ret4):
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L(more_3x_vec):
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/* Safe to compare 4x vectors. */
|
||||
VMOVU VEC_SIZE(%rdi), %ymm0
|
||||
VPCMPEQ VEC_SIZE(%rsi), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, VEC_SIZE(%rsi), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -308,7 +468,7 @@ L(more_3x_vec):
|
|||
# endif
|
||||
|
||||
VMOVU (VEC_SIZE * 2)(%rdi), %ymm0
|
||||
VPCMPEQ (VEC_SIZE * 2)(%rsi), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, (VEC_SIZE * 2)(%rsi), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -316,7 +476,7 @@ L(more_3x_vec):
|
|||
jnz L(return_vec_2)
|
||||
|
||||
VMOVU (VEC_SIZE * 3)(%rdi), %ymm0
|
||||
VPCMPEQ (VEC_SIZE * 3)(%rsi), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, (VEC_SIZE * 3)(%rsi), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -391,12 +551,10 @@ L(loop_skip_page_cross_check):
|
|||
VMOVA (VEC_SIZE * 3)(%rdi), %ymm6
|
||||
|
||||
/* ymm1 all 1s where s1 and s2 equal. All 0s otherwise. */
|
||||
VPCMPEQ (VEC_SIZE * 0)(%rsi), %ymm0, %ymm1
|
||||
|
||||
VPCMPEQ (VEC_SIZE * 1)(%rsi), %ymm2, %ymm3
|
||||
VPCMPEQ (VEC_SIZE * 2)(%rsi), %ymm4, %ymm5
|
||||
VPCMPEQ (VEC_SIZE * 3)(%rsi), %ymm6, %ymm7
|
||||
|
||||
CMP_R1_S2_ymm (%ymm0, (VEC_SIZE * 0)(%rsi), %ymm3, %ymm1)
|
||||
CMP_R1_S2_ymm (%ymm2, (VEC_SIZE * 1)(%rsi), %ymm5, %ymm3)
|
||||
CMP_R1_S2_ymm (%ymm4, (VEC_SIZE * 2)(%rsi), %ymm7, %ymm5)
|
||||
CMP_R1_S2_ymm (%ymm6, (VEC_SIZE * 3)(%rsi), %ymm13, %ymm7)
|
||||
|
||||
/* If any mismatches or null CHAR then 0 CHAR, otherwise non-
|
||||
zero. */
|
||||
|
|
@ -465,6 +623,8 @@ L(return_vec_2_3_end):
|
|||
# else
|
||||
movzbl (VEC_SIZE * 2 - VEC_OFFSET)(%rdi, %LOOP_REG64), %eax
|
||||
movzbl (VEC_SIZE * 2 - VEC_OFFSET)(%rsi, %LOOP_REG64), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -508,6 +668,8 @@ L(return_vec_0_end):
|
|||
# else
|
||||
movzbl (%rdi, %rcx), %eax
|
||||
movzbl (%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -530,6 +692,8 @@ L(return_vec_1_end):
|
|||
# else
|
||||
movzbl VEC_SIZE(%rdi, %rcx), %eax
|
||||
movzbl VEC_SIZE(%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -556,6 +720,8 @@ L(return_vec_2_end):
|
|||
# else
|
||||
movzbl (VEC_SIZE * 2)(%rdi, %rcx), %eax
|
||||
movzbl (VEC_SIZE * 2)(%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -583,7 +749,7 @@ L(page_cross_during_loop):
|
|||
jle L(less_1x_vec_till_page_cross)
|
||||
|
||||
VMOVA (%rdi), %ymm0
|
||||
VPCMPEQ (%rsi), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, (%rsi), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -605,7 +771,7 @@ L(less_1x_vec_till_page_cross):
|
|||
here, it means the previous page (rdi - VEC_SIZE) has already
|
||||
been loaded earlier so must be valid. */
|
||||
VMOVU -VEC_SIZE(%rdi, %rax), %ymm0
|
||||
VPCMPEQ -VEC_SIZE(%rsi, %rax), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, -VEC_SIZE(%rsi, %rax), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -647,6 +813,8 @@ L(return_page_cross_cmp_mem):
|
|||
# else
|
||||
movzbl VEC_OFFSET(%rdi, %rcx), %eax
|
||||
movzbl VEC_OFFSET(%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -673,7 +841,7 @@ L(more_2x_vec_till_page_cross):
|
|||
iteration here. */
|
||||
|
||||
VMOVU VEC_SIZE(%rdi), %ymm0
|
||||
VPCMPEQ VEC_SIZE(%rsi), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, VEC_SIZE(%rsi), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -689,7 +857,7 @@ L(more_2x_vec_till_page_cross):
|
|||
|
||||
/* Safe to include comparisons from lower bytes. */
|
||||
VMOVU -(VEC_SIZE * 2)(%rdi, %rax), %ymm0
|
||||
VPCMPEQ -(VEC_SIZE * 2)(%rsi, %rax), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, -(VEC_SIZE * 2)(%rsi, %rax), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -697,7 +865,7 @@ L(more_2x_vec_till_page_cross):
|
|||
jnz L(return_vec_page_cross_0)
|
||||
|
||||
VMOVU -(VEC_SIZE * 1)(%rdi, %rax), %ymm0
|
||||
VPCMPEQ -(VEC_SIZE * 1)(%rsi, %rax), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, -(VEC_SIZE * 1)(%rsi, %rax), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -715,8 +883,8 @@ L(more_2x_vec_till_page_cross):
|
|||
VMOVA (VEC_SIZE * 2)(%rdi), %ymm4
|
||||
VMOVA (VEC_SIZE * 3)(%rdi), %ymm6
|
||||
|
||||
VPCMPEQ (VEC_SIZE * 2)(%rsi), %ymm4, %ymm5
|
||||
VPCMPEQ (VEC_SIZE * 3)(%rsi), %ymm6, %ymm7
|
||||
CMP_R1_S2_ymm (%ymm4, (VEC_SIZE * 2)(%rsi), %ymm7, %ymm5)
|
||||
CMP_R1_S2_ymm (%ymm6, (VEC_SIZE * 3)(%rsi), %ymm13, %ymm7)
|
||||
vpand %ymm4, %ymm5, %ymm5
|
||||
vpand %ymm6, %ymm7, %ymm7
|
||||
VPMINU %ymm5, %ymm7, %ymm7
|
||||
|
|
@ -767,6 +935,8 @@ L(return_vec_page_cross_1):
|
|||
# else
|
||||
movzbl VEC_OFFSET(%rdi, %rcx), %eax
|
||||
movzbl VEC_OFFSET(%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -822,7 +992,7 @@ L(page_cross):
|
|||
L(page_cross_loop):
|
||||
|
||||
VMOVU (%rdi, %OFFSET_REG64), %ymm0
|
||||
VPCMPEQ (%rsi, %OFFSET_REG64), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, (%rsi, %OFFSET_REG64), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -840,11 +1010,11 @@ L(page_cross_loop):
|
|||
subl %eax, %OFFSET_REG
|
||||
/* OFFSET_REG has distance to page cross - VEC_SIZE. Guranteed
|
||||
to not cross page so is safe to load. Since we have already
|
||||
loaded at least 1 VEC from rsi it is also guranteed to be safe.
|
||||
*/
|
||||
loaded at least 1 VEC from rsi it is also guranteed to be
|
||||
safe. */
|
||||
|
||||
VMOVU (%rdi, %OFFSET_REG64), %ymm0
|
||||
VPCMPEQ (%rsi, %OFFSET_REG64), %ymm0, %ymm1
|
||||
CMP_R1_S2_ymm (%ymm0, (%rsi, %OFFSET_REG64), %ymm2, %ymm1)
|
||||
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||||
vpandn %ymm1, %ymm2, %ymm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -877,6 +1047,8 @@ L(ret_vec_page_cross_cont):
|
|||
# else
|
||||
movzbl (%rdi, %rcx), %eax
|
||||
movzbl (%rsi, %rcx), %ecx
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %ecx)
|
||||
subl %ecx, %eax
|
||||
xorl %r8d, %eax
|
||||
subl %r8d, %eax
|
||||
|
|
@ -930,7 +1102,7 @@ L(less_1x_vec_till_page):
|
|||
ja L(less_16_till_page)
|
||||
|
||||
VMOVU (%rdi), %xmm0
|
||||
VPCMPEQ (%rsi), %xmm0, %xmm1
|
||||
CMP_R1_S2_xmm (%xmm0, (%rsi), %xmm2, %xmm1)
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -948,7 +1120,7 @@ L(less_1x_vec_till_page):
|
|||
# endif
|
||||
|
||||
VMOVU (%rdi, %OFFSET_REG64), %xmm0
|
||||
VPCMPEQ (%rsi, %OFFSET_REG64), %xmm0, %xmm1
|
||||
CMP_R1_S2_xmm (%xmm0, (%rsi, %OFFSET_REG64), %xmm2, %xmm1)
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
|
|
@ -986,7 +1158,7 @@ L(less_16_till_page):
|
|||
vmovq (%rdi), %xmm0
|
||||
vmovq (%rsi), %xmm1
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
VPCMPEQ %xmm1, %xmm0, %xmm1
|
||||
CMP_R1_R2_xmm (%xmm0, %xmm1, %xmm3, %xmm1)
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
incb %cl
|
||||
|
|
@ -1006,7 +1178,7 @@ L(less_16_till_page):
|
|||
vmovq (%rdi, %OFFSET_REG64), %xmm0
|
||||
vmovq (%rsi, %OFFSET_REG64), %xmm1
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
VPCMPEQ %xmm1, %xmm0, %xmm1
|
||||
CMP_R1_R2_xmm (%xmm0, %xmm1, %xmm3, %xmm1)
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
incb %cl
|
||||
|
|
@ -1062,7 +1234,7 @@ L(ret_less_8_wcs):
|
|||
vmovd (%rdi), %xmm0
|
||||
vmovd (%rsi), %xmm1
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
VPCMPEQ %xmm1, %xmm0, %xmm1
|
||||
CMP_R1_R2_xmm (%xmm0, %xmm1, %xmm3, %xmm1)
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
subl $0xf, %ecx
|
||||
|
|
@ -1081,7 +1253,7 @@ L(ret_less_8_wcs):
|
|||
vmovd (%rdi, %OFFSET_REG64), %xmm0
|
||||
vmovd (%rsi, %OFFSET_REG64), %xmm1
|
||||
VPCMPEQ %xmm0, %xmmZERO, %xmm2
|
||||
VPCMPEQ %xmm1, %xmm0, %xmm1
|
||||
CMP_R1_R2_xmm (%xmm0, %xmm1, %xmm3, %xmm1)
|
||||
vpandn %xmm1, %xmm2, %xmm1
|
||||
vpmovmskb %ymm1, %ecx
|
||||
subl $0xf, %ecx
|
||||
|
|
@ -1115,7 +1287,9 @@ L(less_4_till_page):
|
|||
L(less_4_loop):
|
||||
movzbl (%rdi), %eax
|
||||
movzbl (%rsi, %rdi), %ecx
|
||||
subl %ecx, %eax
|
||||
TOLOWER_gpr (%rax, %eax)
|
||||
TOLOWER_gpr (%rcx, %BYTE_LOOP_REG)
|
||||
subl %BYTE_LOOP_REG, %eax
|
||||
jnz L(ret_less_4_loop)
|
||||
testl %ecx, %ecx
|
||||
jz L(ret_zero_4_loop)
|
||||
|
|
@ -1142,5 +1316,6 @@ L(ret_less_4_loop):
|
|||
subl %r8d, %eax
|
||||
ret
|
||||
# endif
|
||||
END(STRCMP)
|
||||
cfi_endproc
|
||||
.size STRCMP, .-STRCMP
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -0,0 +1,16 @@
|
|||
#ifndef STRCMP
|
||||
# define STRCMP __strncasecmp_l_avx2_rtm
|
||||
#endif
|
||||
|
||||
#define _GLABEL(x) x ## _rtm
|
||||
#define GLABEL(x) _GLABEL(x)
|
||||
|
||||
#define ZERO_UPPER_VEC_REGISTERS_RETURN \
|
||||
ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST
|
||||
|
||||
#define VZEROUPPER_RETURN jmp L(return_vzeroupper)
|
||||
|
||||
#define SECTION(p) p##.avx.rtm
|
||||
#define OVERFLOW_STRCMP __strcasecmp_l_avx2_rtm
|
||||
|
||||
#include "strncase_l-avx2.S"
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
/* strncasecmp_l optimized with AVX2.
|
||||
Copyright (C) 2017-2022 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
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#ifndef STRCMP
|
||||
# define STRCMP __strncasecmp_l_avx2
|
||||
#endif
|
||||
#define USE_AS_STRCASECMP_L
|
||||
#define USE_AS_STRNCMP
|
||||
#ifndef OVERFLOW_STRCMP
|
||||
# define OVERFLOW_STRCMP __strcasecmp_l_avx2
|
||||
#endif
|
||||
#include "strcmp-avx2.S"
|
||||
Loading…
Reference in New Issue