Work towards NEXT_INSN/PREV_INSN requiring insns as their params
[platform/upstream/gcc.git] / gcc / shrink-wrap.h
1 /* Shrink-wrapping related functions.
2    Copyright (C) 1989-2014 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
9 version.
10
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3.  If not see
18 <http://www.gnu.org/licenses/>.  */
19
20 #ifndef GCC_SHRINK_WRAP_H
21 #define GCC_SHRINK_WRAP_H
22
23 #include "hashtab.h"
24 #include "vec.h"
25 #include "machmode.h"
26
27 #ifdef HAVE_simple_return
28 /* In function.c.  */
29 extern void emit_return_into_block (bool simple_p, basic_block bb);
30 extern bool active_insn_between (rtx head, rtx tail);
31 extern vec<edge> convert_jumps_to_returns (basic_block last_bb, bool simple_p,
32                                            vec<edge> unconverted);
33 extern basic_block emit_return_for_exit (edge exit_fallthru_edge,
34                                          bool simple_p);
35
36 /* In shrink-wrap.c.  */
37 extern bool requires_stack_frame_p (rtx_insn *, HARD_REG_SET, HARD_REG_SET);
38 extern void prepare_shrink_wrap (basic_block entry_block);
39 extern void dup_block_and_redirect (basic_block bb, basic_block copy_bb,
40                                     rtx_insn *before,
41                                     bitmap_head *need_prologue);
42 extern void try_shrink_wrapping (edge *entry_edge, edge orig_entry_edge,
43                                  bitmap_head *bb_flags, rtx_insn *prologue_seq);
44 extern edge get_unconverted_simple_return (edge, bitmap_head,
45                                            vec<edge> *, rtx_insn **);
46 extern void convert_to_simple_return (edge entry_edge, edge orig_entry_edge,
47                                       bitmap_head bb_flags,
48                                       rtx_insn *returnjump,
49                                       vec<edge> unconverted_simple_returns);
50 #endif
51
52 #endif  /* GCC_SHRINK_WRAP_H  */
53
54