Home | History | Annotate | Line # | Download | only in gcc 
      1 /* Definitions for computing resource usage of specific insns.
      2    Copyright (C) 1999-2022 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 */
     56