diff options
Diffstat (limited to 'sysdeps/x86_64')
| -rw-r--r-- | sysdeps/x86_64/memcmp.S | 9 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/Makefile | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-impl-list.c | 21 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-memcmpeq.h | 49 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmp-sse2.S | 4 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmp.c | 3 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmpeq-avx2-rtm.S | 12 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmpeq-avx2.S | 23 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmpeq-evex.S | 23 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmpeq-sse2.S | 23 | ||||
| -rw-r--r-- | sysdeps/x86_64/multiarch/memcmpeq.c | 35 |
11 files changed, 198 insertions, 8 deletions
diff --git a/sysdeps/x86_64/memcmp.S b/sysdeps/x86_64/memcmp.S index 8a03e572e8..b53f2c0866 100644 --- a/sysdeps/x86_64/memcmp.S +++ b/sysdeps/x86_64/memcmp.S @@ -356,9 +356,10 @@ L(ATR32res): .p2align 4,, 4 END(memcmp) -#undef bcmp +#ifdef USE_AS_MEMCMPEQ +libc_hidden_def (memcmp) +#else +# undef bcmp weak_alias (memcmp, bcmp) -#undef __memcmpeq -strong_alias (memcmp, __memcmpeq) libc_hidden_builtin_def (memcmp) -libc_hidden_def (__memcmpeq) +#endif diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile index 26be40959c..044778585b 100644 --- a/sysdeps/x86_64/multiarch/Makefile +++ b/sysdeps/x86_64/multiarch/Makefile @@ -7,7 +7,9 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \ memchr-sse2 rawmemchr-sse2 memchr-avx2 rawmemchr-avx2 \ memrchr-sse2 memrchr-avx2 \ memcmp-sse2 \ + memcmpeq-sse2 \ memcmp-avx2-movbe \ + memcmpeq-avx2 \ memcmp-sse4 memcpy-ssse3 \ memmove-ssse3 \ memcpy-ssse3-back \ @@ -42,6 +44,7 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \ memset-avx512-unaligned-erms \ memchr-avx2-rtm \ memcmp-avx2-movbe-rtm \ + memcmpeq-avx2-rtm \ memmove-avx-unaligned-erms-rtm \ memrchr-avx2-rtm \ memset-avx2-unaligned-erms-rtm \ @@ -61,6 +64,7 @@ sysdep_routines += strncat-c stpncpy-c strncpy-c \ strrchr-avx2-rtm \ memchr-evex \ memcmp-evex-movbe \ + memcmpeq-evex \ memmove-evex-unaligned-erms \ memrchr-evex \ memset-evex-unaligned-erms \ diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c index 39ab10613b..f7f3806d1d 100644 --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c @@ -38,6 +38,27 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, size_t i = 0; + /* Support sysdeps/x86_64/multiarch/memcmpeq.c. */ + IFUNC_IMPL (i, name, __memcmpeq, + IFUNC_IMPL_ADD (array, i, __memcmpeq, + (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (MOVBE) + && CPU_FEATURE_USABLE (BMI2)), + __memcmpeq_avx2) + IFUNC_IMPL_ADD (array, i, __memcmpeq, + (CPU_FEATURE_USABLE (AVX2) + && CPU_FEATURE_USABLE (BMI2) + && CPU_FEATURE_USABLE (MOVBE) + && CPU_FEATURE_USABLE (RTM)), + __memcmpeq_avx2_rtm) + IFUNC_IMPL_ADD (array, i, __memcmpeq, + (CPU_FEATURE_USABLE (AVX512VL) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (MOVBE) + && CPU_FEATURE_USABLE (BMI2)), + __memcmpeq_evex) + IFUNC_IMPL_ADD (array, i, __memcmpeq, 1, __memcmpeq_sse2)) + /* Support sysdeps/x86_64/multiarch/memchr.c. */ IFUNC_IMPL (i, name, memchr, IFUNC_IMPL_ADD (array, i, memchr, diff --git a/sysdeps/x86_64/multiarch/ifunc-memcmpeq.h b/sysdeps/x86_64/multiarch/ifunc-memcmpeq.h new file mode 100644 index 0000000000..3319a9568a --- /dev/null +++ b/sysdeps/x86_64/multiarch/ifunc-memcmpeq.h @@ -0,0 +1,49 @@ +/* Common definition for __memcmpeq ifunc selections. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2017-2021 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/>. */ + +# include <init-arch.h> + +extern __typeof (REDIRECT_NAME) OPTIMIZE1 (sse2) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE1 (avx2) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE1 (avx2_rtm) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE1 (evex) attribute_hidden; + +static inline void * +IFUNC_SELECTOR (void) +{ + const struct cpu_features* cpu_features = __get_cpu_features (); + + if (CPU_FEATURE_USABLE_P (cpu_features, AVX2) + && CPU_FEATURE_USABLE_P (cpu_features, BMI2) + && CPU_FEATURE_USABLE_P (cpu_features, MOVBE) + && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) + { + if (CPU_FEATURE_USABLE_P (cpu_features, AVX512VL) + && CPU_FEATURE_USABLE_P (cpu_features, AVX512BW)) + return OPTIMIZE1 (evex); + + if (CPU_FEATURE_USABLE_P (cpu_features, RTM)) + return OPTIMIZE1 (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE1 (avx2); + } + + return OPTIMIZE1 (sse2); +} diff --git a/sysdeps/x86_64/multiarch/memcmp-sse2.S b/sysdeps/x86_64/multiarch/memcmp-sse2.S index 7b30b7ca2e..132d6fb339 100644 --- a/sysdeps/x86_64/multiarch/memcmp-sse2.S +++ b/sysdeps/x86_64/multiarch/memcmp-sse2.S @@ -17,7 +17,9 @@ <https://www.gnu.org/licenses/>. */ #if IS_IN (libc) -# define memcmp __memcmp_sse2 +# ifndef memcmp +# define memcmp __memcmp_sse2 +# endif # ifdef SHARED # undef libc_hidden_builtin_def diff --git a/sysdeps/x86_64/multiarch/memcmp.c b/sysdeps/x86_64/multiarch/memcmp.c index 7b3409b1dd..fe725f3563 100644 --- a/sysdeps/x86_64/multiarch/memcmp.c +++ b/sysdeps/x86_64/multiarch/memcmp.c @@ -29,9 +29,6 @@ libc_ifunc_redirected (__redirect_memcmp, memcmp, IFUNC_SELECTOR ()); # undef bcmp weak_alias (memcmp, bcmp) -# undef __memcmpeq -strong_alias (memcmp, __memcmpeq) -libc_hidden_def (__memcmpeq) # ifdef SHARED __hidden_ver1 (memcmp, __GI_memcmp, __redirect_memcmp) diff --git a/sysdeps/x86_64/multiarch/memcmpeq-avx2-rtm.S b/sysdeps/x86_64/multiarch/memcmpeq-avx2-rtm.S new file mode 100644 index 0000000000..24b6a0c9ff --- /dev/null +++ b/sysdeps/x86_64/multiarch/memcmpeq-avx2-rtm.S @@ -0,0 +1,12 @@ +#ifndef MEMCMP +# define MEMCMP __memcmpeq_avx2_rtm +#endif + +#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 + +#include "memcmpeq-avx2.S" diff --git a/sysdeps/x86_64/multiarch/memcmpeq-avx2.S b/sysdeps/x86_64/multiarch/memcmpeq-avx2.S new file mode 100644 index 0000000000..0181ea0d8d --- /dev/null +++ b/sysdeps/x86_64/multiarch/memcmpeq-avx2.S @@ -0,0 +1,23 @@ +/* __memcmpeq optimized with AVX2. + Copyright (C) 2017-2021 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 MEMCMP +# define MEMCMP __memcmpeq_avx2 +#endif + +#include "memcmp-avx2-movbe.S" diff --git a/sysdeps/x86_64/multiarch/memcmpeq-evex.S b/sysdeps/x86_64/multiarch/memcmpeq-evex.S new file mode 100644 index 0000000000..951e1e9560 --- /dev/null +++ b/sysdeps/x86_64/multiarch/memcmpeq-evex.S @@ -0,0 +1,23 @@ +/* __memcmpeq optimized with EVEX. + Copyright (C) 2017-2021 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 MEMCMP +# define MEMCMP __memcmpeq_evex +#endif + +#include "memcmp-evex-movbe.S" diff --git a/sysdeps/x86_64/multiarch/memcmpeq-sse2.S b/sysdeps/x86_64/multiarch/memcmpeq-sse2.S new file mode 100644 index 0000000000..c488cbbcd9 --- /dev/null +++ b/sysdeps/x86_64/multiarch/memcmpeq-sse2.S @@ -0,0 +1,23 @@ +/* __memcmpeq optimized with SSE2. + Copyright (C) 2017-2021 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 memcmp +# define memcmp __memcmpeq_sse2 +#endif +#define USE_AS_MEMCMPEQ 1 +#include "memcmp-sse2.S" diff --git a/sysdeps/x86_64/multiarch/memcmpeq.c b/sysdeps/x86_64/multiarch/memcmpeq.c new file mode 100644 index 0000000000..163e56047e --- /dev/null +++ b/sysdeps/x86_64/multiarch/memcmpeq.c @@ -0,0 +1,35 @@ +/* Multiple versions of __memcmpeq. + All versions must be listed in ifunc-impl-list.c. + Copyright (C) 2017-2021 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/>. */ + +/* Define multiple versions only for the definition in libc. */ +#if IS_IN (libc) +# define __memcmpeq __redirect___memcmpeq +# include <string.h> +# undef __memcmpeq + +# define SYMBOL_NAME __memcmpeq +# include "ifunc-memcmpeq.h" + +libc_ifunc_redirected (__redirect___memcmpeq, __memcmpeq, IFUNC_SELECTOR ()); + +# ifdef SHARED +__hidden_ver1 (__memcmpeq, __GI___memcmpeq, __redirect___memcmpeq) + __attribute__ ((visibility ("hidden"))) __attribute_copy__ (__memcmpeq); +# endif +#endif |