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