]>
Commit | Line | Data |
---|---|---|
826c9564 | 1 | /* Insn note definitions. |
7adcbafe | 2 | Copyright (C) 2004-2022 Free Software Foundation, Inc. |
826c9564 ZW |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 8 | Software Foundation; either version 3, or (at your option) any later |
826c9564 ZW |
9 | version. |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
17 | along with GCC; see the file COPYING3. If not see |
18 | <http://www.gnu.org/licenses/>. */ | |
826c9564 ZW |
19 | |
20 | /* This file defines all the codes that may appear in the | |
21 | NOTE_LINE_NUMBER field of a NOTE insn for kinds of notes that are | |
22 | not line numbers. Source files define DEF_INSN_NOTE appropriately | |
23 | before including this file. | |
24 | ||
25 | We are slowly removing the concept of insn-chain notes from the | |
26 | compiler. Adding new codes to this file is STRONGLY DISCOURAGED. | |
27 | If you think you need one, look for other ways to express what you | |
28 | mean, such as register notes or bits in the basic-block structure. */ | |
29 | ||
30 | /* Shorthand. */ | |
31 | #define INSN_NOTE(NAME) DEF_INSN_NOTE (NOTE_INSN_##NAME) | |
32 | ||
33 | /* This note is used to get rid of an insn when it isn't safe to patch | |
34 | the insn out of the chain. */ | |
35 | INSN_NOTE (DELETED) | |
36 | ||
37 | /* Generated in place of user-declared labels when they are deleted. */ | |
38 | INSN_NOTE (DELETED_LABEL) | |
5619e52c JJ |
39 | /* Similarly, but for labels that have been present in debug stmts |
40 | earlier and thus will only appear with -g. These must use different | |
41 | label namespace. */ | |
42 | INSN_NOTE (DELETED_DEBUG_LABEL) | |
826c9564 ZW |
43 | |
44 | /* These are used to mark the beginning and end of a lexical block. | |
45 | See NOTE_BLOCK and reorder_blocks. */ | |
46 | INSN_NOTE (BLOCK_BEG) | |
47 | INSN_NOTE (BLOCK_END) | |
48 | ||
826c9564 ZW |
49 | /* This note indicates the start of the real body of the function, |
50 | i.e. the point just after all of the parms have been moved into | |
51 | their homes, etc. */ | |
52 | INSN_NOTE (FUNCTION_BEG) | |
53 | ||
826c9564 ZW |
54 | /* This marks the point immediately after the last prologue insn. */ |
55 | INSN_NOTE (PROLOGUE_END) | |
56 | ||
57 | /* This marks the point immediately prior to the first epilogue insn. */ | |
58 | INSN_NOTE (EPILOGUE_BEG) | |
59 | ||
60 | /* These note where exception handling regions begin and end. | |
61 | Uses NOTE_EH_HANDLER to identify the region in question. */ | |
62 | INSN_NOTE (EH_REGION_BEG) | |
63 | INSN_NOTE (EH_REGION_END) | |
64 | ||
826c9564 ZW |
65 | /* The location of a variable. */ |
66 | INSN_NOTE (VAR_LOCATION) | |
67 | ||
36f52e8f AO |
68 | /* The beginning of a statement. */ |
69 | INSN_NOTE (BEGIN_STMT) | |
70 | ||
58006663 AO |
71 | /* The entry point for an inlined function. Its NOTE_BLOCK references |
72 | the lexical block whose abstract origin is the inlined function. */ | |
73 | INSN_NOTE (INLINE_ENTRY) | |
74 | ||
826c9564 ZW |
75 | /* Record the struct for the following basic block. Uses |
76 | NOTE_BASIC_BLOCK. FIXME: Redundant with the basic block pointer | |
5e5df392 TV |
77 | now included in every insn. NOTE: If there's no CFG anymore, in other words, |
78 | if BLOCK_FOR_INSN () == NULL, NOTE_BASIC_BLOCK cannot be considered reliable | |
79 | anymore. */ | |
826c9564 ZW |
80 | INSN_NOTE (BASIC_BLOCK) |
81 | ||
87c8b4be CT |
82 | /* Mark the inflection point in the instruction stream where we switch |
83 | between hot and cold text sections. */ | |
84 | INSN_NOTE (SWITCH_TEXT_SECTIONS) | |
826c9564 | 85 | |
bc5612ed BS |
86 | /* When emitting dwarf2 frame information, contains a directive that |
87 | should be emitted. */ | |
88 | INSN_NOTE (CFI) | |
89 | ||
90 | /* When emitting dwarf2 frame information, contains the number of a debug | |
91 | label that should be emitted. */ | |
92 | INSN_NOTE (CFI_LABEL) | |
93 | ||
d33606c3 EB |
94 | /* This note indicates that the function context must be updated if |
95 | the Setjmp/Longjmp exception mechanism is used. */ | |
96 | INSN_NOTE (UPDATE_SJLJ_CONTEXT) | |
97 | ||
826c9564 | 98 | #undef INSN_NOTE |