| 1 | /* Common definition for wmemset/wmemset_chk ifunc selections. |
|---|
| 2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
|---|
| 3 | This file is part of the GNU C Library. |
|---|
| 4 | |
|---|
| 5 | The GNU C Library is free software; you can redistribute it and/or |
|---|
| 6 | modify it under the terms of the GNU Lesser General Public |
|---|
| 7 | License as published by the Free Software Foundation; either |
|---|
| 8 | version 2.1 of the License, or (at your option) any later version. |
|---|
| 9 | |
|---|
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
|---|
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 13 | Lesser General Public License for more details. |
|---|
| 14 | |
|---|
| 15 | You should have received a copy of the GNU Lesser General Public |
|---|
| 16 | License along with the GNU C Library; if not, see |
|---|
| 17 | <https://www.gnu.org/licenses/>. */ |
|---|
| 18 | |
|---|
| 19 | #include <init-arch.h> |
|---|
| 20 | |
|---|
| 21 | extern __typeof (REDIRECT_NAME) OPTIMIZE (avx512_unaligned) attribute_hidden; |
|---|
| 22 | |
|---|
| 23 | extern __typeof (REDIRECT_NAME) OPTIMIZE (evex_unaligned) attribute_hidden; |
|---|
| 24 | |
|---|
| 25 | extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned) attribute_hidden; |
|---|
| 26 | extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_unaligned_rtm) |
|---|
| 27 | attribute_hidden; |
|---|
| 28 | |
|---|
| 29 | extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden; |
|---|
| 30 | |
|---|
| 31 | static inline void * |
|---|
| 32 | IFUNC_SELECTOR (void) |
|---|
| 33 | { |
|---|
| 34 | const struct cpu_features *cpu_features = __get_cpu_features (); |
|---|
| 35 | |
|---|
| 36 | if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX2) |
|---|
| 37 | && X86_ISA_CPU_FEATURES_ARCH_P (cpu_features, |
|---|
| 38 | AVX_Fast_Unaligned_Load, !)) |
|---|
| 39 | { |
|---|
| 40 | if (X86_ISA_CPU_FEATURE_USABLE_P (cpu_features, AVX512VL)) |
|---|
| 41 | { |
|---|
| 42 | if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_AVX512)) |
|---|
| 43 | return OPTIMIZE (avx512_unaligned); |
|---|
| 44 | |
|---|
| 45 | return OPTIMIZE (evex_unaligned); |
|---|
| 46 | } |
|---|
| 47 | |
|---|
| 48 | if (CPU_FEATURE_USABLE_P (cpu_features, RTM)) |
|---|
| 49 | return OPTIMIZE (avx2_unaligned_rtm); |
|---|
| 50 | |
|---|
| 51 | if (X86_ISA_CPU_FEATURES_ARCH_P (cpu_features, |
|---|
| 52 | Prefer_No_VZEROUPPER, !)) |
|---|
| 53 | return OPTIMIZE (avx2_unaligned); |
|---|
| 54 | } |
|---|
| 55 | |
|---|
| 56 | return OPTIMIZE (sse2_unaligned); |
|---|
| 57 | } |
|---|
| 58 | |
|---|
