resource.h revision 1.6
1/* Definitions for computing resource usage of specific insns. 2 Copyright (C) 1999-2016 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along 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. */ 29struct 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 */ 38enum mark_resource_type 39{ 40 MARK_SRC_DEST = 0, 41 MARK_SRC_DEST_CALL = 1 42}; 43 44extern void mark_target_live_regs (rtx_insn *, rtx, struct resources *); 45extern void mark_set_resources (rtx, struct resources *, int, 46 enum mark_resource_type); 47extern void mark_referenced_resources (rtx, struct resources *, bool); 48extern void clear_hashed_info_for_insn (rtx_insn *); 49extern void incr_ticks_for_insn (rtx_insn *); 50extern void mark_end_of_function_resources (rtx, bool); 51extern void init_resource_info (rtx_insn *); 52extern void free_resource_info (void); 53 54#endif /* GCC_RESOURCE_H */ 55