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      1 /* CPU feature detection for AArch64 architecture.
      2    Copyright (C) 2023-2024 Free Software Foundation, Inc.
      3 
      4    This file is part of GCC.
      5 
      6    This file is free software; you can redistribute it and/or modify it
      7    under the terms of the GNU General Public License as published by the
      8    Free Software Foundation; either version 3, or (at your option) any
      9    later version.
     10 
     11    This file is distributed in the hope that it will be useful, but
     12    WITHOUT ANY WARRANTY; without even the implied warranty of
     13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14    General Public License for more details.
     15 
     16    Under Section 7 of GPL version 3, you are granted additional
     17    permissions described in the GCC Runtime Library Exception, version
     18    3.1, as published by the Free Software Foundation.
     19 
     20    You should have received a copy of the GNU General Public License and
     21    a copy of the GCC Runtime Library Exception along with this program;
     22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23    <http://www.gnu.org/licenses/>.  */
     24 
     25 /* This enum is used in libgcc feature detection, and in the function
     26    multiversioning implementation in aarch64.cc.  The enum should use the same
     27    values as the corresponding enum in LLVM's compiler-rt, to faciliate
     28    compatibility between compilers.  */
     29 
     30 enum CPUFeatures {
     31   FEAT_RNG,
     32   FEAT_FLAGM,
     33   FEAT_FLAGM2,
     34   FEAT_FP16FML,
     35   FEAT_DOTPROD,
     36   FEAT_SM4,
     37   FEAT_RDM,
     38   FEAT_LSE,
     39   FEAT_FP,
     40   FEAT_SIMD,
     41   FEAT_CRC,
     42   FEAT_SHA1,
     43   FEAT_SHA2,
     44   FEAT_SHA3,
     45   FEAT_AES,
     46   FEAT_PMULL,
     47   FEAT_FP16,
     48   FEAT_DIT,
     49   FEAT_DPB,
     50   FEAT_DPB2,
     51   FEAT_JSCVT,
     52   FEAT_FCMA,
     53   FEAT_RCPC,
     54   FEAT_RCPC2,
     55   FEAT_FRINTTS,
     56   FEAT_DGH,
     57   FEAT_I8MM,
     58   FEAT_BF16,
     59   FEAT_EBF16,
     60   FEAT_RPRES,
     61   FEAT_SVE,
     62   FEAT_SVE_BF16,
     63   FEAT_SVE_EBF16,
     64   FEAT_SVE_I8MM,
     65   FEAT_SVE_F32MM,
     66   FEAT_SVE_F64MM,
     67   FEAT_SVE2,
     68   FEAT_SVE_AES,
     69   FEAT_SVE_PMULL128,
     70   FEAT_SVE_BITPERM,
     71   FEAT_SVE_SHA3,
     72   FEAT_SVE_SM4,
     73   FEAT_SME,
     74   FEAT_MEMTAG,
     75   FEAT_MEMTAG2,
     76   FEAT_MEMTAG3,
     77   FEAT_SB,
     78   FEAT_PREDRES,
     79   FEAT_SSBS,
     80   FEAT_SSBS2,
     81   FEAT_BTI,
     82   FEAT_LS64,
     83   FEAT_LS64_V,
     84   FEAT_LS64_ACCDATA,
     85   FEAT_WFXT,
     86   FEAT_SME_F64,
     87   FEAT_SME_I64,
     88   FEAT_SME2,
     89   FEAT_RCPC3,
     90   FEAT_MAX,
     91   FEAT_EXT = 62, /* Reserved to indicate presence of additional features field
     92 		    in __aarch64_cpu_features.  */
     93   FEAT_INIT      /* Used as flag of features initialization completion.  */
     94 };
     95