Mercurial > hg > CbC > CbC_gcc

annotate gcc/config/aarch64/aarch64-tuning-flags.def @ 145:1830386684a0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
parents 84e7813d76e9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
145
1830386684a0 gcc-9.2.0
anatofuz
parents: 131
diff changeset
1 /* Copyright (C) 2015-2020 Free Software Foundation, Inc.
111
kono
parents:
diff changeset
2 Contributed by ARM Ltd.
kono
parents:
diff changeset
3
kono
parents:
diff changeset
4 This file is part of GCC.
kono
parents:
diff changeset
5
kono
parents:
diff changeset
6 GCC is free software; you can redistribute it and/or modify it
kono
parents:
diff changeset
7 under the terms of the GNU General Public License as published
kono
parents:
diff changeset
8 by the Free Software Foundation; either version 3, or (at your
kono
parents:
diff changeset
9 option) any later version.
kono
parents:
diff changeset
10
kono
parents:
diff changeset
11 GCC is distributed in the hope that it will be useful, but WITHOUT
kono
parents:
diff changeset
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
kono
parents:
diff changeset
13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
kono
parents:
diff changeset
14 License for more details.
kono
parents:
diff changeset
15
kono
parents:
diff changeset
16 You should have received a copy of the GNU General Public License
kono
parents:
diff changeset
17 along with GCC; see the file COPYING3. If not see
kono
parents:
diff changeset
18 <http://www.gnu.org/licenses/>. */
kono
parents:
diff changeset
19
kono
parents:
diff changeset
20 /* Additional control over certain tuning parameters. Before including
kono
parents:
diff changeset
21 this file, define a macro:
kono
parents:
diff changeset
22
kono
parents:
diff changeset
23 AARCH64_EXTRA_TUNING_OPTION (name, internal_name)
kono
parents:
diff changeset
24
kono
parents:
diff changeset
25 Where:
kono
parents:
diff changeset
26
kono
parents:
diff changeset
27 NAME is a string giving a friendly name for the tuning flag.
kono
parents:
diff changeset
28 INTERNAL_NAME gives the internal name suitable for appending to
kono
parents:
diff changeset
29 AARCH64_TUNE_ to give an enum name. */
kono
parents:
diff changeset
30
kono
parents:
diff changeset
31 AARCH64_EXTRA_TUNING_OPTION ("rename_fma_regs", RENAME_FMA_REGS)
kono
parents:
diff changeset
32
kono
parents:
diff changeset
33 /* Don't create non-8 byte aligned load/store pair. That is if the
kono
parents:
diff changeset
34 two load/stores are not at least 8 byte aligned don't create load/store
kono
parents:
diff changeset
35 pairs. */
kono
parents:
diff changeset
36 AARCH64_EXTRA_TUNING_OPTION ("slow_unaligned_ldpw", SLOW_UNALIGNED_LDPW)
kono
parents:
diff changeset
37
kono
parents:
diff changeset
38 /* Some of the optional shift to some arthematic instructions are
kono
parents:
diff changeset
39 considered cheap. Logical shift left <=4 with or without a
kono
parents:
diff changeset
40 zero extend are considered cheap. Sign extend; non logical shift left
kono
parents:
diff changeset
41 are not considered cheap. */
kono
parents:
diff changeset
42 AARCH64_EXTRA_TUNING_OPTION ("cheap_shift_extend", CHEAP_SHIFT_EXTEND)
kono
parents:
diff changeset
43
131
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
44 /* Disallow load/store pair instructions on Q-registers. */
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
45 AARCH64_EXTRA_TUNING_OPTION ("no_ldp_stp_qregs", NO_LDP_STP_QREGS)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
46
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
47 AARCH64_EXTRA_TUNING_OPTION ("rename_load_regs", RENAME_LOAD_REGS)
84e7813d76e9 gcc-8.2
mir3636
parents: 111
diff changeset
48
111
kono
parents:
diff changeset
49 #undef AARCH64_EXTRA_TUNING_OPTION