47 lines
1.9 KiB
C
47 lines
1.9 KiB
C
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/* 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 GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 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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extern void mark_target_live_regs (rtx, rtx, struct resources *);
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extern void mark_set_resources (rtx, struct resources *, int,
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int);
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extern void mark_referenced_resources (rtx, struct resources *, int);
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extern void clear_hashed_info_for_insn (rtx);
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extern void incr_ticks_for_insn (rtx);
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extern void mark_end_of_function_resources (rtx, int);
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extern void init_resource_info (rtx);
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extern void free_resource_info (void);
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extern rtx find_free_register (rtx, char *, int,
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HARD_REG_SET *);
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