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- /* Shrink-wrapping related functions.
- Copyright (C) 1989-2015 Free Software Foundation, Inc.
- This file is part of GCC.
- GCC 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 3, or (at your option) any later
- version.
- GCC 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 GCC; see the file COPYING3. If not see
- <http://www.gnu.org/licenses/>. */
- #ifndef GCC_SHRINK_WRAP_H
- #define GCC_SHRINK_WRAP_H
- #include "hashtab.h"
- #include "vec.h"
- #include "machmode.h"
- #ifdef HAVE_simple_return
- #include "function.h"
- /* In shrink-wrap.c. */
- extern bool requires_stack_frame_p (rtx_insn *, HARD_REG_SET, HARD_REG_SET);
- extern void prepare_shrink_wrap (basic_block entry_block);
- extern void dup_block_and_redirect (basic_block bb, basic_block copy_bb,
- rtx_insn *before,
- bitmap_head *need_prologue);
- extern void try_shrink_wrapping (edge *entry_edge, edge orig_entry_edge,
- bitmap_head *bb_flags, rtx_insn *prologue_seq);
- extern edge get_unconverted_simple_return (edge, bitmap_head,
- vec<edge> *, rtx_insn **);
- extern void convert_to_simple_return (edge entry_edge, edge orig_entry_edge,
- bitmap_head bb_flags,
- rtx_insn *returnjump,
- vec<edge> unconverted_simple_returns);
- #define SHRINK_WRAPPING_ENABLED (flag_shrink_wrap && HAVE_simple_return)
- #else
- #define SHRINK_WRAPPING_ENABLED false
- #endif
- #endif /* GCC_SHRINK_WRAP_H */
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