1 /* Definitions for computing resource usage of specific insns. 2 Copyright (C) 1999, 2003, 2004, 2006, 2007, 2009, 2010 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 3, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #ifndef GCC_RESOURCE_H 22 #define GCC_RESOURCE_H 23 24 #include "hard-reg-set.h" 25 #include "df.h" 26 27 /* Macro to clear all resources. */ 28 #define CLEAR_RESOURCE(RES) \ 29 do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \ 30 CLEAR_HARD_REG_SET ((RES)->regs); } while (0) 31 32 /* The resources used by a given insn. */ 33 struct resources 34 { 35 char memory; /* Insn sets or needs a memory location. */ 36 char unch_memory; /* Insn sets or needs an "unchanging" MEM. */ 37 char volatil; /* Insn sets or needs a volatile memory loc. */ 38 char cc; /* Insn sets or needs the condition codes. */ 39 HARD_REG_SET regs; /* Which registers are set or needed. */ 40 }; 41 42 /* The kinds of rtl mark_*_resources will consider */ 43 enum mark_resource_type 44 { 45 MARK_SRC_DEST = 0, 46 MARK_SRC_DEST_CALL = 1 47 }; 48 49 extern void mark_target_live_regs (rtx, rtx, struct resources *); 50 extern void mark_set_resources (rtx, struct resources *, int, 51 enum mark_resource_type); 52 extern void mark_referenced_resources (rtx, struct resources *, bool); 53 extern void clear_hashed_info_for_insn (rtx); 54 extern void incr_ticks_for_insn (rtx); 55 extern void mark_end_of_function_resources (rtx, bool); 56 extern void init_resource_info (rtx); 57 extern void free_resource_info (void); 58 59 #endif /* GCC_RESOURCE_H */ 60