1 /* Definitions for computing resource usage of specific insns. 2 Copyright (C) 1999-2013 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 #include "hard-reg-set.h" 24 #include "df.h" 25 26 /* Macro to clear all resources. */ 27 #define CLEAR_RESOURCE(RES) \ 28 do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \ 29 CLEAR_HARD_REG_SET ((RES)->regs); } while (0) 30 31 /* The resources used by a given insn. */ 32 struct resources 33 { 34 char memory; /* Insn sets or needs a memory location. */ 35 char unch_memory; /* Insn sets or needs an "unchanging" MEM. */ 36 char volatil; /* Insn sets or needs a volatile memory loc. */ 37 char cc; /* Insn sets or needs the condition codes. */ 38 HARD_REG_SET regs; /* Which registers are set or needed. */ 39 }; 40 41 /* The kinds of rtl mark_*_resources will consider */ 42 enum mark_resource_type 43 { 44 MARK_SRC_DEST = 0, 45 MARK_SRC_DEST_CALL = 1 46 }; 47 48 extern void mark_target_live_regs (rtx, rtx, struct resources *); 49 extern void mark_set_resources (rtx, struct resources *, int, 50 enum mark_resource_type); 51 extern void mark_referenced_resources (rtx, struct resources *, bool); 52 extern void clear_hashed_info_for_insn (rtx); 53 extern void incr_ticks_for_insn (rtx); 54 extern void mark_end_of_function_resources (rtx, bool); 55 extern void init_resource_info (rtx); 56 extern void free_resource_info (void); 57 58 #endif /* GCC_RESOURCE_H */ 59