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/* Definitions for computing resource usage of specific insns.
   Copyright (C) 1999, 2003, 2004, 2006, 2007, 2009, 2010
   Free Software Foundation, Inc.
 
This file is part of GCC.
 
GCC 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 3, or (at your option) any later
version.
 
GCC 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 GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */
 
#ifndef GCC_RESOURCE_H
#define GCC_RESOURCE_H
 
#include "hard-reg-set.h"
#include "df.h"
 
/* 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 or needs an "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.  */
};
 
/* The kinds of rtl mark_*_resources will consider */
enum mark_resource_type
{
  MARK_SRC_DEST = 0,
  MARK_SRC_DEST_CALL = 1
};
 
extern void mark_target_live_regs (rtx, rtx, struct resources *);
extern void mark_set_resources (rtx, struct resources *, int,
				enum mark_resource_type);
extern void mark_referenced_resources (rtx, struct resources *, bool);
extern void clear_hashed_info_for_insn (rtx);
extern void incr_ticks_for_insn (rtx);
extern void mark_end_of_function_resources (rtx, bool);
extern void init_resource_info (rtx);
extern void free_resource_info (void);
 
#endif /* GCC_RESOURCE_H */