152284Sobrien/* Definitions for computing resource usage of specific insns.
2169689Skan   Copyright (C) 1999, 2003, 2004 Free Software Foundation, Inc.
352284Sobrien
490075SobrienThis file is part of GCC.
552284Sobrien
690075SobrienGCC is free software; you can redistribute it and/or modify it under
790075Sobrienthe terms of the GNU General Public License as published by the Free
890075SobrienSoftware Foundation; either version 2, or (at your option) any later
990075Sobrienversion.
1052284Sobrien
1190075SobrienGCC is distributed in the hope that it will be useful, but WITHOUT ANY
1290075SobrienWARRANTY; without even the implied warranty of MERCHANTABILITY or
1390075SobrienFITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
1490075Sobrienfor more details.
1552284Sobrien
1652284SobrienYou should have received a copy of the GNU General Public License
1790075Sobrienalong with GCC; see the file COPYING.  If not, write to the Free
18169689SkanSoftware Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
19169689Skan02110-1301, USA.  */
2052284Sobrien
21169689Skan#ifndef GCC_RESOURCE_H
22169689Skan#define GCC_RESOURCE_H
23169689Skan
24169689Skan#include "hard-reg-set.h"
25169689Skan
2652284Sobrien/* Macro to clear all resources.  */
2752284Sobrien#define CLEAR_RESOURCE(RES)	\
2852284Sobrien do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \
2952284Sobrien      CLEAR_HARD_REG_SET ((RES)->regs); } while (0)
3052284Sobrien
3190075Sobrien/* The resources used by a given insn.  */
3252284Sobrienstruct resources
3352284Sobrien{
3452284Sobrien  char memory;		/* Insn sets or needs a memory location.  */
3552284Sobrien  char unch_memory;	/* Insn sets of needs a "unchanging" MEM.  */
3652284Sobrien  char volatil;		/* Insn sets or needs a volatile memory loc.  */
3752284Sobrien  char cc;		/* Insn sets or needs the condition codes.  */
3852284Sobrien  HARD_REG_SET regs;	/* Which registers are set or needed.  */
3952284Sobrien};
4052284Sobrien
4190075Sobrien/* The kinds of rtl mark_*_resources will consider */
4290075Sobrienenum mark_resource_type
4390075Sobrien{
4490075Sobrien  MARK_SRC_DEST = 0,
45132718Skan  MARK_SRC_DEST_CALL = 1
4690075Sobrien};
4790075Sobrien
48132718Skanextern void mark_target_live_regs (rtx, rtx, struct resources *);
49132718Skanextern void mark_set_resources (rtx, struct resources *, int,
50132718Skan				enum mark_resource_type);
51132718Skanextern void mark_referenced_resources (rtx, struct resources *, int);
52132718Skanextern void clear_hashed_info_for_insn (rtx);
53132718Skanextern void incr_ticks_for_insn (rtx);
54132718Skanextern void mark_end_of_function_resources (rtx, int);
55132718Skanextern void init_resource_info (rtx);
56132718Skanextern void free_resource_info (void);
57169689Skan
58169689Skan#endif /* GCC_RESOURCE_H */
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