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-rw-r--r--gcc/basic-block.h69
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diff --git a/gcc/basic-block.h b/gcc/basic-block.h
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-/* Define control and data flow tables, and regsets.
- Copyright (C) 1987 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. */
-
-
-/* Number of bits in each actual element of a regset. */
-
-#define REGSET_ELT_BITS HOST_BITS_PER_WIDE_INT
-
-/* Type to use for a regset element. Note that lots of code assumes
- that the initial part of a regset that contains information on the
- hard registers is the same format as a HARD_REG_SET. */
-
-#define REGSET_ELT_TYPE unsigned HOST_WIDE_INT
-
-/* Define the type for a pointer to a set with a bit for each
- (hard or pseudo) register. */
-
-typedef REGSET_ELT_TYPE *regset;
-
-/* Size of a regset for the current function,
- in (1) bytes and (2) elements. */
-
-extern int regset_bytes;
-extern int regset_size;
-
-/* Number of basic blocks in the current function. */
-
-extern int n_basic_blocks;
-
-/* Index by basic block number, get first insn in the block. */
-
-extern rtx *basic_block_head;
-
-/* Index by basic block number, get last insn in the block. */
-
-extern rtx *basic_block_end;
-
-/* Index by basic block number, get address of regset
- describing the registers live at the start of that block. */
-
-extern regset *basic_block_live_at_start;
-
-/* Indexed by n, gives number of basic block that (REG n) is used in.
- If the value is REG_BLOCK_GLOBAL (-2),
- it means (REG n) is used in more than one basic block.
- REG_BLOCK_UNKNOWN (-1) means it hasn't been seen yet so we don't know.
- This information remains valid for the rest of the compilation
- of the current function; it is used to control register allocation. */
-
-#define REG_BLOCK_UNKNOWN -1
-#define REG_BLOCK_GLOBAL -2
-extern int *reg_basic_block;