| /* Definitions for computing resource usage of specific insns. |
| Copyright (C) 1999 Free Software Foundation, Inc. |
| |
| This file is part of GNU CC. |
| |
| GNU CC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU CC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU CC; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* Macro to clear all resources. */ |
| #define CLEAR_RESOURCE(RES) \ |
| do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \ |
| CLEAR_HARD_REG_SET ((RES)->regs); } while (0) |
| |
| /* The resources used by a given insn. */ |
| struct resources |
| { |
| char memory; /* Insn sets or needs a memory location. */ |
| char unch_memory; /* Insn sets of needs a "unchanging" MEM. */ |
| char volatil; /* Insn sets or needs a volatile memory loc. */ |
| char cc; /* Insn sets or needs the condition codes. */ |
| HARD_REG_SET regs; /* Which registers are set or needed. */ |
| }; |
| |
| extern void mark_target_live_regs PROTO((rtx, rtx, struct resources *)); |
| extern void mark_set_resources PROTO((rtx, struct resources *, int, |
| int)); |
| extern void mark_referenced_resources PROTO((rtx, struct resources *, int)); |
| extern void clear_hashed_info_for_insn PROTO((rtx)); |
| extern void incr_ticks_for_insn PROTO((rtx)); |
| extern void mark_end_of_function_resources PROTO ((rtx, int)); |
| extern void init_resource_info PROTO((rtx)); |
| extern void free_resource_info PROTO((void)); |
| extern rtx find_free_register PROTO((rtx, char *, int, |
| HARD_REG_SET *)); |