28df87300a
(approved at https://gcc.gnu.org/ml/gcc-patches/2015-12/msg00648.html ) * common.opt (-fsplit-loops): New flag. * passes.def (pass_loop_split): Add. * opts.c (default_options_table): Add OPT_fsplit_loops entry at -O3. (enable_fdo_optimizations): Add loop splitting. * timevar.def (TV_LOOP_SPLIT): Add. * tree-pass.h (make_pass_loop_split): Declare. * tree-ssa-loop-manip.h (rewrite_into_loop_closed_ssa_1): Declare. * tree-ssa-loop-unswitch.c: Include tree-ssa-loop-manip.h, * tree-ssa-loop-split.c: New file. * Makefile.in (OBJS): Add tree-ssa-loop-split.o. * doc/invoke.texi (fsplit-loops): Document. * doc/passes.texi (Loop optimization): Add paragraph about loop splitting. testsuite/ * gcc.dg/loop-split.c: New test. * gcc.dg/tree-ssa/ifc-9.c: Update. * gcc.dg/tree-ssa/ifc-10.c: Update. From-SVN: r241374
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/* Header file for High-level loop manipulation functions.
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Copyright (C) 2013-2016 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_TREE_SSA_LOOP_MANIP_H
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#define GCC_TREE_SSA_LOOP_MANIP_H
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typedef void (*transform_callback)(struct loop *, void *);
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extern void create_iv (tree, tree, tree, struct loop *, gimple_stmt_iterator *,
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bool, tree *, tree *);
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extern void rewrite_into_loop_closed_ssa_1 (bitmap, unsigned, int,
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struct loop *);
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extern void rewrite_into_loop_closed_ssa (bitmap, unsigned);
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extern void rewrite_virtuals_into_loop_closed_ssa (struct loop *);
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extern void verify_loop_closed_ssa (bool);
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static inline void
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checking_verify_loop_closed_ssa (bool verify_ssa_p)
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{
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if (flag_checking)
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verify_loop_closed_ssa (verify_ssa_p);
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}
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extern basic_block split_loop_exit_edge (edge);
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extern basic_block ip_end_pos (struct loop *);
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extern basic_block ip_normal_pos (struct loop *);
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extern void standard_iv_increment_position (struct loop *,
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gimple_stmt_iterator *, bool *);
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extern bool gimple_duplicate_loop_to_header_edge (struct loop *, edge,
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unsigned int, sbitmap,
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edge, vec<edge> *,
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int);
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extern bool can_unroll_loop_p (struct loop *loop, unsigned factor,
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struct tree_niter_desc *niter);
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extern void tree_transform_and_unroll_loop (struct loop *, unsigned,
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edge, struct tree_niter_desc *,
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transform_callback, void *);
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extern void tree_unroll_loop (struct loop *, unsigned,
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edge, struct tree_niter_desc *);
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extern tree canonicalize_loop_ivs (struct loop *, tree *, bool);
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#endif /* GCC_TREE_SSA_LOOP_MANIP_H */
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