53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/* Definitions for computing resource usage of specific insns.
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Copyright (C) 1999 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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/* Macro to clear all resources. */
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#define CLEAR_RESOURCE(RES) \
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do { (RES)->memory = (RES)->unch_memory = (RES)->volatil = (RES)->cc = 0; \
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CLEAR_HARD_REG_SET ((RES)->regs); } while (0)
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/* The resources used by a given insn. */
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struct resources
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{
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char memory; /* Insn sets or needs a memory location. */
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char unch_memory; /* Insn sets of needs a "unchanging" MEM. */
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char volatil; /* Insn sets or needs a volatile memory loc. */
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char cc; /* Insn sets or needs the condition codes. */
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HARD_REG_SET regs; /* Which registers are set or needed. */
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};
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/* The kinds of rtl mark_*_resources will consider */
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enum mark_resource_type
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{
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MARK_SRC_DEST = 0,
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MARK_SRC_DEST_CALL = 1,
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MARK_DEST = 2
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};
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extern void mark_target_live_regs PARAMS ((rtx, rtx, struct resources *));
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extern void mark_set_resources PARAMS ((rtx, struct resources *, int,
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enum mark_resource_type));
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extern void mark_referenced_resources PARAMS ((rtx, struct resources *, int));
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extern void clear_hashed_info_for_insn PARAMS ((rtx));
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extern void incr_ticks_for_insn PARAMS ((rtx));
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extern void mark_end_of_function_resources PARAMS ((rtx, int));
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extern void init_resource_info PARAMS ((rtx));
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extern void free_resource_info PARAMS ((void));
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