1/* Copyright (C) 2015-2018 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 8 by the Free Software Foundation; either version 3, or (at your 9 option) any later version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 14 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/* Additional control over certain tuning parameters. Before including 21 this file, define a macro: 22 23 AARCH64_EXTRA_TUNING_OPTION (name, internal_name) 24 25 Where: 26 27 NAME is a string giving a friendly name for the tuning flag. 28 INTERNAL_NAME gives the internal name suitable for appending to 29 AARCH64_TUNE_ to give an enum name. */ 30 31AARCH64_EXTRA_TUNING_OPTION ("rename_fma_regs", RENAME_FMA_REGS) 32 33/* Don't create non-8 byte aligned load/store pair. That is if the 34two load/stores are not at least 8 byte aligned don't create load/store 35pairs. */ 36AARCH64_EXTRA_TUNING_OPTION ("slow_unaligned_ldpw", SLOW_UNALIGNED_LDPW) 37 38/* Some of the optional shift to some arthematic instructions are 39 considered cheap. Logical shift left <=4 with or without a 40 zero extend are considered cheap. Sign extend; non logical shift left 41 are not considered cheap. */ 42AARCH64_EXTRA_TUNING_OPTION ("cheap_shift_extend", CHEAP_SHIFT_EXTEND) 43 44#undef AARCH64_EXTRA_TUNING_OPTION 45