1 /* Definitions for computing resource usage of specific insns.
2 Copyright (C) 1999 Free Software Foundation, Inc.
4 This file is part of GNU CC.
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)
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.
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. */
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)
26 /* The resources used by a given insn. */
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. */
36 /* The kinds of rtl mark_*_resources will consider */
37 enum mark_resource_type
40 MARK_SRC_DEST_CALL
= 1,
44 extern void mark_target_live_regs
PARAMS ((rtx
, rtx
, struct resources
*));
45 extern void mark_set_resources
PARAMS ((rtx
, struct resources
*, int,
46 enum mark_resource_type
));
47 extern void mark_referenced_resources
PARAMS ((rtx
, struct resources
*, int));
48 extern void clear_hashed_info_for_insn
PARAMS ((rtx
));
49 extern void incr_ticks_for_insn
PARAMS ((rtx
));
50 extern void mark_end_of_function_resources
PARAMS ((rtx
, int));
51 extern void init_resource_info
PARAMS ((rtx
));
52 extern void free_resource_info
PARAMS ((void));
53 extern rtx find_free_register
PARAMS ((rtx
, rtx
, const char *, int,
55 extern int reg_dead_p
PARAMS ((rtx
, rtx
));