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760 lines
24 KiB
760 lines
24 KiB
6 months ago
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From bbf81222343fed5cd704001a2ae0d86c71544151 Mon Sep 17 00:00:00 2001
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From: Noah Goldstein <goldstein.w.n@gmail.com>
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Date: Thu, 24 Mar 2022 18:56:12 -0500
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Subject: [PATCH] x86: Add AVX2 optimized str{n}casecmp
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Content-type: text/plain; charset=UTF-8
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geometric_mean(N=40) of all benchmarks AVX2 / SSE42: .702
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All string/memory tests pass.
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Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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---
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sysdeps/x86_64/multiarch/Makefile | 4 +
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sysdeps/x86_64/multiarch/ifunc-impl-list.c | 28 +++
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sysdeps/x86_64/multiarch/ifunc-strcasecmp.h | 12 +
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.../x86_64/multiarch/strcasecmp_l-avx2-rtm.S | 15 ++
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sysdeps/x86_64/multiarch/strcasecmp_l-avx2.S | 23 ++
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sysdeps/x86_64/multiarch/strcmp-avx2.S | 237 +++++++++++++++---
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.../x86_64/multiarch/strncase_l-avx2-rtm.S | 16 ++
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sysdeps/x86_64/multiarch/strncase_l-avx2.S | 27 ++
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8 files changed, 331 insertions(+), 31 deletions(-)
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create mode 100644 sysdeps/x86_64/multiarch/strcasecmp_l-avx2-rtm.S
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create mode 100644 sysdeps/x86_64/multiarch/strcasecmp_l-avx2.S
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create mode 100644 sysdeps/x86_64/multiarch/strncase_l-avx2-rtm.S
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create mode 100644 sysdeps/x86_64/multiarch/strncase_l-avx2.S
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diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
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index 8c9e7812..711ecf2e 100644
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--- a/sysdeps/x86_64/multiarch/Makefile
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+++ b/sysdeps/x86_64/multiarch/Makefile
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@@ -51,6 +51,8 @@ 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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@@ -89,6 +91,8 @@ 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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diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
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index c963d391..d873e1be 100644
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--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
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+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
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@@ -418,6 +418,13 @@ __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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@@ -431,6 +438,13 @@ __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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@@ -558,6 +572,13 @@ __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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@@ -572,6 +593,13 @@ __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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diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
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index 6a4bb078..926508c4 100644
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--- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
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+++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
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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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+
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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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+
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if (CPU_FEATURE_USABLE_P (cpu_features, AVX))
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return OPTIMIZE (avx);
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diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-avx2-rtm.S b/sysdeps/x86_64/multiarch/strcasecmp_l-avx2-rtm.S
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new file mode 100644
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index 00000000..09957fc3
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--- /dev/null
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+++ b/sysdeps/x86_64/multiarch/strcasecmp_l-avx2-rtm.S
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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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+
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+#define _GLABEL(x) x ## _rtm
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+#define GLABEL(x) _GLABEL(x)
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+
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+#define ZERO_UPPER_VEC_REGISTERS_RETURN \
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+ ZERO_UPPER_VEC_REGISTERS_RETURN_XTEST
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+
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+#define VZEROUPPER_RETURN jmp L(return_vzeroupper)
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+
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+#define SECTION(p) p##.avx.rtm
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+
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+#include "strcasecmp_l-avx2.S"
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diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-avx2.S b/sysdeps/x86_64/multiarch/strcasecmp_l-avx2.S
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new file mode 100644
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index 00000000..e2762f2a
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--- /dev/null
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+++ b/sysdeps/x86_64/multiarch/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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+
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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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+
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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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+
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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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+
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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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diff --git a/sysdeps/x86_64/multiarch/strcmp-avx2.S b/sysdeps/x86_64/multiarch/strcmp-avx2.S
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index 782f9472..28cc98b6 100644
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--- a/sysdeps/x86_64/multiarch/strcmp-avx2.S
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+++ b/sysdeps/x86_64/multiarch/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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+# define CMP_R1_R2_xmm(...) CMP_R1_R2_ymm(__VA_ARGS__)
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+
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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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+
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/* Warning!
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wcscmp/wcsncmp have to use SIGNED comparison for elements.
|
||
|
|
strcmp/strncmp have to use UNSIGNED comparison for elements.
|
||
|
|
@@ -102,8 +181,49 @@
|
||
|
|
returned. */
|
||
|
|
|
||
|
|
.section SECTION(.text), "ax", @progbits
|
||
|
|
-ENTRY(STRCMP)
|
||
|
|
+ .align 16
|
||
|
|
+ .type STRCMP, @function
|
||
|
|
+ .globl STRCMP
|
||
|
|
+ .hidden STRCMP
|
||
|
|
+
|
||
|
|
+# ifndef GLABEL
|
||
|
|
+# define GLABEL(...) __VA_ARGS__
|
||
|
|
+# endif
|
||
|
|
+
|
||
|
|
+# ifdef USE_AS_STRCASECMP_L
|
||
|
|
+ENTRY (GLABEL(STRCASECMP))
|
||
|
|
+ movq __libc_tsd_LOCALE@gottpoff(%rip), %rax
|
||
|
|
+ mov %fs:(%rax), %LOCALE_REG_LP
|
||
|
|
+
|
||
|
|
+ /* Either 1 or 5 bytes (dependeing if CET is enabled). */
|
||
|
|
+ .p2align 4
|
||
|
|
+END (GLABEL(STRCASECMP))
|
||
|
|
+ /* FALLTHROUGH to strcasecmp/strncasecmp_l. */
|
||
|
|
+# endif
|
||
|
|
+
|
||
|
|
+ .p2align 4
|
||
|
|
+STRCMP:
|
||
|
|
+ cfi_startproc
|
||
|
|
+ _CET_ENDBR
|
||
|
|
+ CALL_MCOUNT
|
||
|
|
+
|
||
|
|
+# if defined USE_AS_STRCASECMP_L
|
||
|
|
+ /* We have to fall back on the C implementation for locales with
|
||
|
|
+ encodings not matching ASCII for single bytes. */
|
||
|
|
+# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
|
||
|
|
+ mov LOCALE_T___LOCALES + LC_CTYPE * LP_SIZE(%LOCALE_REG), %RAX_LP
|
||
|
|
+# else
|
||
|
|
+ mov (%LOCALE_REG), %RAX_LP
|
||
|
|
+# endif
|
||
|
|
+ testl $1, LOCALE_DATA_VALUES + _NL_CTYPE_NONASCII_CASE * SIZEOF_VALUES(%rax)
|
||
|
|
+ jne STRCASECMP_NONASCII
|
||
|
|
+ leaq _nl_C_LC_CTYPE_tolower + 128 * 4(%rip), TOLOWER_BASE
|
||
|
|
+# endif
|
||
|
|
+
|
||
|
|
# ifdef USE_AS_STRNCMP
|
||
|
|
+ /* Don't overwrite LOCALE_REG (rcx) until we have pass
|
||
|
|
+ L(one_or_less). Otherwise we might use the wrong locale in
|
||
|
|
+ the OVERFLOW_STRCMP (strcasecmp_l). */
|
||
|
|
# ifdef __ILP32__
|
||
|
|
/* Clear the upper 32 bits. */
|
||
|
|
movl %edx, %edx
|
||
|
|
@@ -128,6 +248,30 @@ ENTRY(STRCMP)
|
||
|
|
# endif
|
||
|
|
# endif
|
||
|
|
vpxor %xmmZERO, %xmmZERO, %xmmZERO
|
||
|
|
+# if defined USE_AS_STRCASECMP_L
|
||
|
|
+ .section .rodata.cst32, "aM", @progbits, 32
|
||
|
|
+ .align 32
|
||
|
|
+L(lcase_min):
|
||
|
|
+ .quad 0x3f3f3f3f3f3f3f3f
|
||
|
|
+ .quad 0x3f3f3f3f3f3f3f3f
|
||
|
|
+ .quad 0x3f3f3f3f3f3f3f3f
|
||
|
|
+ .quad 0x3f3f3f3f3f3f3f3f
|
||
|
|
+L(lcase_max):
|
||
|
|
+ .quad 0x9999999999999999
|
||
|
|
+ .quad 0x9999999999999999
|
||
|
|
+ .quad 0x9999999999999999
|
||
|
|
+ .quad 0x9999999999999999
|
||
|
|
+L(case_add):
|
||
|
|
+ .quad 0x2020202020202020
|
||
|
|
+ .quad 0x2020202020202020
|
||
|
|
+ .quad 0x2020202020202020
|
||
|
|
+ .quad 0x2020202020202020
|
||
|
|
+ .previous
|
||
|
|
+
|
||
|
|
+ vmovdqa L(lcase_min)(%rip), LCASE_MIN_ymm
|
||
|
|
+ vmovdqa L(lcase_max)(%rip), LCASE_MAX_ymm
|
||
|
|
+ vmovdqa L(case_add)(%rip), CASE_ADD_ymm
|
||
|
|
+# endif
|
||
|
|
movl %edi, %eax
|
||
|
|
orl %esi, %eax
|
||
|
|
sall $20, %eax
|
||
|
|
@@ -138,8 +282,10 @@ ENTRY(STRCMP)
|
||
|
|
L(no_page_cross):
|
||
|
|
/* Safe to compare 4x vectors. */
|
||
|
|
VMOVU (%rdi), %ymm0
|
||
|
|
- /* 1s where s1 and s2 equal. */
|
||
|
|
- VPCMPEQ (%rsi), %ymm0, %ymm1
|
||
|
|
+ /* 1s where s1 and s2 equal. Just VPCMPEQ if its not strcasecmp.
|
||
|
|
+ Otherwise converts ymm0 and load from rsi to lower. ymm2 is
|
||
|
|
+ scratch and ymm1 is the return. */
|
||
|
|
+ CMP_R1_S2_ymm (%ymm0, (%rsi), %ymm2, %ymm1)
|
||
|
|
/* 1s at null CHAR. */
|
||
|
|
VPCMPEQ %ymm0, %ymmZERO, %ymm2
|
||
|
|
/* 1s where s1 and s2 equal AND not null CHAR. */
|
||
|
|
@@ -172,6 +318,8 @@ L(return_vec_0):
|
||
|
|
# else
|
||
|
|
movzbl (%rdi, %rcx), %eax
|
||
|
|
movzbl (%rsi, %rcx), %ecx
|
||
|
|
+ TOLOWER_gpr (%rax, %eax)
|
||
|
|
+ TOLOWER_gpr (%rcx, %ecx)
|
||
|
|
subl %ecx, %eax
|
||
|
|
# endif
|
||
|
|
L(ret0):
|
||
|
|
@@ -192,6 +340,10 @@ L(ret_zero):
|
||
|
|
|
||
|
|
.p2align 4,, 5
|
||
|
|
L(one_or_less):
|
||
|
|
+# ifdef USE_AS_STRCASECMP_L
|
||
|
|
+ /* Set locale argument for strcasecmp. */
|
||
|
|
+ movq %LOCALE_REG, %rdx
|
||
|
|
+# endif
|
||
|
|
jb L(ret_zero)
|
||
|
|
# ifdef USE_AS_WCSCMP
|
||
|
|
/* 'nbe' covers the case where length is negative (large
|
||
|
|
@@ -211,6 +363,8 @@ L(one_or_less):
|
||
|
|
jnbe __strcmp_avx2
|
||
|
|
movzbl (%rdi), %eax
|
||
|
|
movzbl (%rsi), %ecx
|
||
|
|
+ TOLOWER_gpr (%rax, %eax)
|
||
|
|
+ TOLOWER_gpr (%rcx, %ecx)
|
||
|
|
subl %ecx, %eax
|
||
|
|
# endif
|
||
|
|
L(ret1):
|
||
|
|
@@ -238,6 +392,8 @@ L(return_vec_1):
|
||
|
|
# else
|
||
|
|
movzbl VEC_SIZE(%rdi, %rcx), %eax
|
||
|
|
movzbl VEC_SIZE(%rsi, %rcx), %ecx
|
||
|
|
+ TOLOWER_gpr (%rax, %eax)
|
||
|
|
+ TOLOWER_gpr (%rcx, %ecx)
|
||
|
|
subl %ecx, %eax
|
||
|
|
# endif
|
||
|
|
L(ret2):
|
||
|
|
@@ -269,6 +425,8 @@ L(return_vec_2):
|
||
|
|
# 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
|
||
|
|
# endif
|
||
|
|
L(ret3):
|
||
|
|
@@ -289,6 +447,8 @@ L(return_vec_3):
|
||
|
|
# else
|
||
|
|
movzbl (VEC_SIZE * 3)(%rdi, %rcx), %eax
|
||
|
|
movzbl (VEC_SIZE * 3)(%rsi, %rcx), %ecx
|
||
|
|
+ TOLOWER_gpr (%rax, %eax)
|
||
|
|
+ TOLOWER_gpr (%rcx, %ecx)
|
||
|
|
subl %ecx, %eax
|
||
|
|
# endif
|
||
|
|
L(ret4):
|
||
|
|
@@ -299,7 +459,7 @@ L(ret4):
|
||
|
|
L(more_3x_vec):
|
||
|
|
/* 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
|
||
|
|
@@ -312,7 +472,7 @@ 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
|
||
|
|
@@ -320,7 +480,7 @@ 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
|
||
|
|
@@ -395,12 +555,10 @@ 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. */
|
||
|
|
@@ -469,6 +627,8 @@ 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
|
||
|
|
@@ -512,6 +672,8 @@ 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
|
||
|
|
@@ -534,6 +696,8 @@ 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
|
||
|
|
@@ -560,6 +724,8 @@ 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
|
||
|
|
@@ -587,7 +753,7 @@ 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
|
||
|
|
@@ -609,7 +775,7 @@ 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
|
||
|
|
@@ -651,6 +817,8 @@ 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
|
||
|
|
@@ -677,7 +845,7 @@ 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
|
||
|
|
@@ -693,7 +861,7 @@ 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
|
||
|
|
@@ -701,7 +869,7 @@ 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
|
||
|
|
@@ -719,8 +887,8 @@ 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
|
||
|
|
@@ -771,6 +939,8 @@ 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
|
||
|
|
@@ -826,7 +996,7 @@ 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
|
||
|
|
@@ -844,11 +1014,11 @@ 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
|
||
|
|
@@ -881,6 +1051,8 @@ 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
|
||
|
|
@@ -934,7 +1106,7 @@ 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
|
||
|
|
@@ -952,7 +1124,7 @@ 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
|
||
|
|
@@ -990,7 +1162,7 @@ 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
|
||
|
|
@@ -1010,7 +1182,7 @@ 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
|
||
|
|
@@ -1066,7 +1238,7 @@ 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
|
||
|
|
@@ -1085,7 +1257,7 @@ 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
|
||
|
|
@@ -1119,7 +1291,9 @@ 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)
|
||
|
|
@@ -1146,5 +1320,6 @@ L(ret_less_4_loop):
|
||
|
|
subl %r8d, %eax
|
||
|
|
ret
|
||
|
|
# endif
|
||
|
|
-END(STRCMP)
|
||
|
|
+ cfi_endproc
|
||
|
|
+ .size STRCMP, .-STRCMP
|
||
|
|
#endif
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/strncase_l-avx2-rtm.S b/sysdeps/x86_64/multiarch/strncase_l-avx2-rtm.S
|
||
|
|
new file mode 100644
|
||
|
|
index 00000000..58c05dcf
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/strncase_l-avx2-rtm.S
|
||
|
|
@@ -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"
|
||
|
|
diff --git a/sysdeps/x86_64/multiarch/strncase_l-avx2.S b/sysdeps/x86_64/multiarch/strncase_l-avx2.S
|
||
|
|
new file mode 100644
|
||
|
|
index 00000000..48c0aa21
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/sysdeps/x86_64/multiarch/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"
|
||
|
|
--
|
||
|
|
GitLab
|
||
|
|
|