1  /* Definitions for computing resource usage of specific insns.
       2     Copyright (C) 1999-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef GCC_RESOURCE_H
      21  #define GCC_RESOURCE_H
      22  
      23  /* Macro to clear all resources.  */
      24  #define CLEAR_RESOURCE(RES)	\
      25   do { (RES)->memory = (RES)->volatil = (RES)->cc = 0; \
      26        CLEAR_HARD_REG_SET ((RES)->regs); } while (0)
      27  
      28  /* The resources used by a given insn.  */
      29  struct resources
      30  {
      31    char memory;		/* Insn sets or needs a memory location.  */
      32    char volatil;		/* Insn sets or needs a volatile memory loc.  */
      33    char cc;		/* Insn sets or needs the condition codes.  */
      34    HARD_REG_SET regs;	/* Which registers are set or needed.  */
      35  };
      36  
      37  /* The kinds of rtl mark_*_resources will consider */
      38  enum mark_resource_type
      39  {
      40    MARK_SRC_DEST = 0,
      41    MARK_SRC_DEST_CALL = 1
      42  };
      43  
      44  extern void mark_target_live_regs (rtx_insn *, rtx, struct resources *);
      45  extern void mark_set_resources (rtx, struct resources *, int,
      46  				enum mark_resource_type);
      47  extern void mark_referenced_resources (rtx, struct resources *, bool);
      48  extern void clear_hashed_info_for_insn (rtx_insn *);
      49  extern void clear_hashed_info_until_next_barrier (rtx_insn *);
      50  extern void incr_ticks_for_insn (rtx_insn *);
      51  extern void mark_end_of_function_resources (rtx, bool);
      52  extern void init_resource_info (rtx_insn *);
      53  extern void free_resource_info (void);
      54  
      55  #endif /* GCC_RESOURCE_H */