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/* CYGNUS LOCAL LRS */
/* Allocate registers within a basic block, for GNU compiler.
Copyright (C) 1997, 1998 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Global declarations for live range support. */
/* Linked list of live ranges to try allocating registers in first before
allocating all of the remaining registers. */
extern rtx live_range_list;
/* # of distinct ranges seen so far */
extern int range_max_unique;
/* Bits for the different live range copy options. */
/* Allow copys from original register into new register */
#define LIVE_RANGE_COPYIN 0x1
/* Allow copys from new register back into original register */
#define LIVE_RANGE_COPYOUT 0x2
/* Allow copies from constant integers */
#define LIVE_RANGE_COPYIN_CONST 0x4
/* Default value for using GDB specific stabs to denote live ranges */
#define LIVE_RANGE_GDB_DEFAULT 1
/* Default value for creating scoping blocks for live ranges */
#define LIVE_RANGE_SCOPE_DEFAULT 0
/* Determine whether or not to use new style stabs for live range debugging.
Assumes that write_symbols == DBX_DEBUG has already been checked for. */
#define LIVE_RANGE_GDBSTAB_P() (use_gnu_debug_info_extensions \
&& flag_live_range_gdb)
/* Live range functions */
#ifdef BUFSIZ
extern void live_range_print PROTO((FILE *, rtx, char *, char *));
extern int live_range PROTO((rtx, FILE *));
#endif
extern void init_live_range PROTO((void));
/* END CYGNUS LOCAL LRS */
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