git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| ca545bb5 BM |
1 | /* Definitions for computing resource usage of specific insns. |
| 2 | Copyright (C) 1999 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GNU CC. | |
| 5 | ||
| 6 | GNU CC is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GNU CC is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU CC; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
| 19 | Boston, MA 02111-1307, USA. */ | |
| 20 | ||
| 21 | /* Macro to clear all resources. */ | |
| 22 | #define CLEAR_RESOURCE(RES) \ | |
| 23 | do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \ | |
| 24 | CLEAR_HARD_REG_SET ((RES)->regs); } while (0) | |
| 25 | ||
| 26 | /* The resources used by a given insn. */ | |
| 27 | struct resources | |
| 28 | { | |
| 29 | char memory; /* Insn sets or needs a memory location. */ | |
| 30 | char unch_memory; /* Insn sets of needs a "unchanging" MEM. */ | |
| 31 | char volatil; /* Insn sets or needs a volatile memory loc. */ | |
| 32 | char cc; /* Insn sets or needs the condition codes. */ | |
| 33 | HARD_REG_SET regs; /* Which registers are set or needed. */ | |
| 34 | }; | |
| 35 | ||
| cdadb1dd KG |
36 | extern void mark_target_live_regs PARAMS ((rtx, rtx, struct resources *)); |
| 37 | extern void mark_set_resources PARAMS ((rtx, struct resources *, int, | |
| ca545bb5 | 38 | int)); |
| cdadb1dd KG |
39 | extern void mark_referenced_resources PARAMS ((rtx, struct resources *, int)); |
| 40 | extern void clear_hashed_info_for_insn PARAMS ((rtx)); | |
| 41 | extern void incr_ticks_for_insn PARAMS ((rtx)); | |
| 42 | extern void mark_end_of_function_resources PARAMS ((rtx, int)); | |
| 43 | extern void init_resource_info PARAMS ((rtx)); | |
| 44 | extern void free_resource_info PARAMS ((void)); | |
| 45 | extern rtx find_free_register PARAMS ((rtx, rtx, const char *, int, | |
| ca545bb5 | 46 | HARD_REG_SET *)); |
| cdadb1dd | 47 | extern int reg_dead_p PARAMS ((rtx, rtx)); |