1/* Definitions for computing resource usage of specific insns.
2   Copyright (C) 1999, 2003, 2004, 2006, 2007, 2009
3   Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 3, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3.  If not see
19<http://www.gnu.org/licenses/>.  */
20
21#ifndef GCC_RESOURCE_H
22#define GCC_RESOURCE_H
23
24#include "hard-reg-set.h"
25#include "df.h"
26
27/* Macro to clear all resources.  */
28#define CLEAR_RESOURCE(RES)	\
29 do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \
30      CLEAR_HARD_REG_SET ((RES)->regs); } while (0)
31
32/* The resources used by a given insn.  */
33struct resources
34{
35  char memory;		/* Insn sets or needs a memory location.  */
36  char unch_memory;	/* Insn sets of needs a "unchanging" MEM.  */
37  char volatil;		/* Insn sets or needs a volatile memory loc.  */
38  char cc;		/* Insn sets or needs the condition codes.  */
39  HARD_REG_SET regs;	/* Which registers are set or needed.  */
40};
41
42/* The kinds of rtl mark_*_resources will consider */
43enum mark_resource_type
44{
45  MARK_SRC_DEST = 0,
46  MARK_SRC_DEST_CALL = 1
47};
48
49extern void mark_target_live_regs (rtx, rtx, struct resources *);
50extern void mark_set_resources (rtx, struct resources *, int,
51				enum mark_resource_type);
52extern void mark_referenced_resources (rtx, struct resources *, bool);
53extern void clear_hashed_info_for_insn (rtx);
54extern void incr_ticks_for_insn (rtx);
55extern void mark_end_of_function_resources (rtx, bool);
56extern void init_resource_info (rtx);
57extern void free_resource_info (void);
58
59#endif /* GCC_RESOURCE_H */
60