| /* Copyright (C) 2015-2020 Free Software Foundation, Inc. |
| Contributed by ARM Ltd. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published |
| by the Free Software Foundation; either version 3, or (at your |
| option) any later version. |
| |
| GCC 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 General Public |
| License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* Additional control over certain tuning parameters. Before including |
| this file, define a macro: |
| |
| AARCH64_EXTRA_TUNING_OPTION (name, internal_name) |
| |
| Where: |
| |
| NAME is a string giving a friendly name for the tuning flag. |
| INTERNAL_NAME gives the internal name suitable for appending to |
| AARCH64_TUNE_ to give an enum name. */ |
| |
| AARCH64_EXTRA_TUNING_OPTION ("rename_fma_regs", RENAME_FMA_REGS) |
| |
| /* Don't create non-8 byte aligned load/store pair. That is if the |
| two load/stores are not at least 8 byte aligned don't create load/store |
| pairs. */ |
| AARCH64_EXTRA_TUNING_OPTION ("slow_unaligned_ldpw", SLOW_UNALIGNED_LDPW) |
| |
| /* Some of the optional shift to some arthematic instructions are |
| considered cheap. Logical shift left <=4 with or without a |
| zero extend are considered cheap. Sign extend; non logical shift left |
| are not considered cheap. */ |
| AARCH64_EXTRA_TUNING_OPTION ("cheap_shift_extend", CHEAP_SHIFT_EXTEND) |
| |
| /* Disallow load/store pair instructions on Q-registers. */ |
| AARCH64_EXTRA_TUNING_OPTION ("no_ldp_stp_qregs", NO_LDP_STP_QREGS) |
| |
| AARCH64_EXTRA_TUNING_OPTION ("rename_load_regs", RENAME_LOAD_REGS) |
| |
| /* Prefer Advanced SIMD over SVE for auto-vectorization. */ |
| AARCH64_EXTRA_TUNING_OPTION ("prefer_advsimd_autovec", PREFER_ADVSIMD_AUTOVEC) |
| |
| AARCH64_EXTRA_TUNING_OPTION ("cse_sve_vl_constants", CSE_SVE_VL_CONSTANTS) |
| |
| #undef AARCH64_EXTRA_TUNING_OPTION |