1 | /* Global common subexpression elimination/Partial redundancy elimination |
2 | and global constant/copy propagation for GNU compiler. |
3 | Copyright (C) 1997-2023 Free Software Foundation, Inc. |
4 | |
5 | This file is part of GCC. |
6 | |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free |
9 | Software Foundation; either version 3, or (at your option) any later |
10 | version. |
11 | |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 | for more details. |
16 | |
17 | You should have received a copy of the GNU General Public License |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ |
20 | |
21 | #ifndef GCC_GCSE_H |
22 | #define GCC_GCSE_H |
23 | |
24 | /* Target-dependent globals. */ |
25 | struct target_gcse { |
26 | /* Nonzero for each mode that supports (set (reg) (reg)). |
27 | This is trivially true for integer and floating point values. |
28 | It may or may not be true for condition codes. */ |
29 | char x_can_copy[(int) NUM_MACHINE_MODES]; |
30 | |
31 | /* True if the previous field has been initialized. */ |
32 | bool x_can_copy_init_p; |
33 | }; |
34 | |
35 | extern struct target_gcse default_target_gcse; |
36 | #if SWITCHABLE_TARGET |
37 | extern struct target_gcse *this_target_gcse; |
38 | #else |
39 | #define this_target_gcse (&default_target_gcse) |
40 | #endif |
41 | |
42 | void gcse_cc_finalize (void); |
43 | extern bool gcse_or_cprop_is_too_expensive (const char *); |
44 | extern rtx_insn *insert_insn_end_basic_block (rtx_insn *, basic_block); |
45 | |
46 | #endif |
47 | |