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| author | Michael Matz <matz@suse.de> | 2016-10-20 12:18:32 +0000 |
|---|---|---|
| committer | Michael Matz <matz@gcc.gnu.org> | 2016-10-20 12:18:32 +0000 |
| commit | 28df87300a0dadffa5332e8a8e25688a7e62f5cd (patch) | |
| tree | 6e07e23b33a8db22031caaaa3e7c9e1df95f4a16 /gcc/opts.c | |
| parent | a2e0054e1d169984ec64d64145b71a88a9628537 (diff) | |
| download | gcc-28df87300a0dadffa5332e8a8e25688a7e62f5cd.zip gcc-28df87300a0dadffa5332e8a8e25688a7e62f5cd.tar.gz gcc-28df87300a0dadffa5332e8a8e25688a7e62f5cd.tar.bz2 | |
loop splitting
(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
Diffstat (limited to 'gcc/opts.c')
| -rw-r--r-- | gcc/opts.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -530,6 +530,7 @@ static const struct default_options default_options_table[] = regardless of them being declared inline. */ { OPT_LEVELS_3_PLUS_AND_SIZE, OPT_finline_functions, NULL, 1 }, { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 }, + { OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 }, { OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 }, { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 }, { OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 }, @@ -1427,6 +1428,8 @@ enable_fdo_optimizations (struct gcc_options *opts, opts->x_flag_ipa_bit_cp = value; if (!opts_set->x_flag_predictive_commoning) opts->x_flag_predictive_commoning = value; + if (!opts_set->x_flag_split_loops) + opts->x_flag_split_loops = value; if (!opts_set->x_flag_unswitch_loops) opts->x_flag_unswitch_loops = value; if (!opts_set->x_flag_gcse_after_reload) |