gcc/config/aarch64/aarch64-option-extensions.def

   1 /* Copyright (C) 2012-2018 Free Software Foundation, Inc.
   2    Contributed by ARM Ltd.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC 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    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 /* This is a list of ISA extentsions in AArch64.
  21
  22    Before using #include to read this file, define a macro:
  23
  24       AARCH64_OPT_EXTENSION(EXT_NAME, FLAG_CANONICAL, FLAGS_ON, FLAGS_OFF, FEATURE_STRING)
  25
  26    EXT_NAME is the name of the extension, represented as a string constant.
  27    FLAGS_CANONICAL is the canonical internal name for this flag.
  28    FLAGS_ON are the bitwise-or of the features that enabling the extension
  29    adds, or zero if enabling this extension has no effect on other features.
  30    FLAGS_OFF are the bitwise-or of the features that disabling the extension
  31    removes, or zero if disabling this extension has no effect on other
  32    features.
  33    FEAT_STRING is a string containing the entries in the 'Features' field of
  34    /proc/cpuinfo on a GNU/Linux system that correspond to this architecture
  35    extension being available.  Sometimes multiple entries are needed to enable
  36    the extension (for example, the 'crypto' extension depends on four
  37    entries: aes, pmull, sha1, sha2 being present).  In that case this field
  38    should contain a space (" ") separated list of the strings in 'Features'
  39    that are required.  Their order is not important.  */
  40
  41 /* Enabling "fp" just enables "fp".
  42    Disabling "fp" also disables "simd", "crypto", "fp16", "aes", "sha2",
  43    "sha3", sm3/sm4 and "sve".  */
  44 AARCH64_OPT_EXTENSION("fp", AARCH64_FL_FP, 0, AARCH64_FL_SIMD | AARCH64_FL_CRYPTO |\
  45                       AARCH64_FL_F16 | AARCH64_FL_AES | AARCH64_FL_SHA2 |\
  46                       AARCH64_FL_SHA3 | AARCH64_FL_SM4 | AARCH64_FL_SVE, "fp")
  47
  48 /* Enabling "simd" also enables "fp".
  49    Disabling "simd" also disables "crypto", "dotprod", "aes", "sha2", "sha3",
  50    "sm3/sm4" and "sve".  */
  51 AARCH64_OPT_EXTENSION("simd", AARCH64_FL_SIMD, AARCH64_FL_FP, AARCH64_FL_CRYPTO |\
  52                       AARCH64_FL_DOTPROD | AARCH64_FL_AES | AARCH64_FL_SHA2 |\
  53                       AARCH64_FL_SHA3 | AARCH64_FL_SM4 | AARCH64_FL_SVE,
  54                       "asimd")
  55
  56 /* Enabling "crypto" also enables "fp" and "simd".
  57    Disabling "crypto" disables "crypto", "aes", "sha2", "sha3" and "sm3/sm4".  */
  58 AARCH64_OPT_EXTENSION("crypto", AARCH64_FL_CRYPTO, AARCH64_FL_FP | AARCH64_FL_SIMD,\
  59                       AARCH64_FL_AES | AARCH64_FL_SHA2 |AARCH64_FL_SHA3 | AARCH64_FL_SM4,\
  60                       "aes pmull sha1 sha2")
  61
  62 /* Enabling or disabling "crc" only changes "crc".  */
  63 AARCH64_OPT_EXTENSION("crc", AARCH64_FL_CRC, 0, 0, "crc32")
  64
  65 /* Enabling or disabling "lse" only changes "lse".  */
  66 AARCH64_OPT_EXTENSION("lse", AARCH64_FL_LSE, 0, 0, "atomics")
  67
  68 /* Enabling "fp16" also enables "fp".
  69    Disabling "fp16" disables "fp16", "fp16fml" and "sve".  */
  70 AARCH64_OPT_EXTENSION("fp16", AARCH64_FL_F16, AARCH64_FL_FP,
  71                       AARCH64_FL_F16FML | AARCH64_FL_SVE, "fphp asimdhp")
  72
  73 /* Enabling or disabling "rcpc" only changes "rcpc".  */
  74 AARCH64_OPT_EXTENSION("rcpc", AARCH64_FL_RCPC, 0, 0, "lrcpc")
  75
  76 /* Enabling "rdma" also enables "fp", "simd".
  77    Disabling "rdma" just disables "rdma".  */
  78 AARCH64_OPT_EXTENSION("rdma", AARCH64_FL_RDMA, AARCH64_FL_FP | AARCH64_FL_SIMD, 0, "asimdrdm")
  79
  80 /* Enabling "dotprod" also enables "simd".
  81    Disabling "dotprod" only disables "dotprod".  */
  82 AARCH64_OPT_EXTENSION("dotprod", AARCH64_FL_DOTPROD, AARCH64_FL_SIMD, 0, "asimddp")
  83
  84 /* Enabling "aes" also enables "simd".
  85    Disabling "aes" just disables "aes".  */
  86 AARCH64_OPT_EXTENSION("aes", AARCH64_FL_AES, AARCH64_FL_SIMD, 0, "aes")
  87
  88 /* Enabling "sha2" also enables "simd".
  89    Disabling "sha2" just disables "sha2".  */
  90 AARCH64_OPT_EXTENSION("sha2", AARCH64_FL_SHA2, AARCH64_FL_SIMD, 0, "sha1 sha2")
  91
  92 /* Enabling "sha3" enables "simd" and "sha2".
  93    Disabling "sha3" just disables "sha3".  */
  94 AARCH64_OPT_EXTENSION("sha3", AARCH64_FL_SHA3, AARCH64_FL_SIMD | AARCH64_FL_SHA2, 0, "sha3 sha512")
  95
  96 /* Enabling "sm4" also enables "simd".
  97    Disabling "sm4" just disables "sm4".  */
  98 AARCH64_OPT_EXTENSION("sm4", AARCH64_FL_SM4, AARCH64_FL_SIMD, 0, "sm3 sm4")
  99
 100 /* Enabling "fp16fml" also enables "fp" and "fp16".
 101    Disabling "fp16fml" just disables "fp16fml".  */
 102 AARCH64_OPT_EXTENSION("fp16fml", AARCH64_FL_F16FML, AARCH64_FL_FP | AARCH64_FL_F16, 0, "asimdfml")
 103
 104 /* Enabling "sve" also enables "fp16", "fp" and "simd".
 105    Disabling "sve" just disables "sve".  */
 106 AARCH64_OPT_EXTENSION("sve", AARCH64_FL_SVE, AARCH64_FL_FP | AARCH64_FL_SIMD | AARCH64_FL_F16, 0, "sve")
 107
 108 /* Enabling/Disabling "profile" does not enable/disable any other feature.  */
 109 AARCH64_OPT_EXTENSION("profile", AARCH64_FL_PROFILE, 0, 0, "")
 110
 111 #undef AARCH64_OPT_EXTENSION