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/* Definitions for computing resource usage of specific insns.
Copyright (C) 1999 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 2, 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 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. */
};
/* The kinds of rtl mark_*_resources will consider */
enum mark_resource_type
{
MARK_SRC_DEST = 0,
MARK_SRC_DEST_CALL = 1,
MARK_DEST = 2
};
extern void mark_target_live_regs PARAMS ((rtx, rtx, struct resources *));
extern void mark_set_resources PARAMS ((rtx, struct resources *, int,
enum mark_resource_type));
extern void mark_referenced_resources PARAMS ((rtx, struct resources *, int));
extern void clear_hashed_info_for_insn PARAMS ((rtx));
extern void incr_ticks_for_insn PARAMS ((rtx));
extern void mark_end_of_function_resources PARAMS ((rtx, int));
extern void init_resource_info PARAMS ((rtx));
extern void free_resource_info PARAMS ((void));
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