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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2012-04-28 01:56:54 +0000 |
|---|---|---|
| committer | Maxim Kuvyrkov <mkuvyrkov@gcc.gnu.org> | 2012-04-28 01:56:54 +0000 |
| commit | fa06ad0d58e8981afc7dd0e8965505bab04a5320 (patch) | |
| tree | fa87f8c36fc8d168b8c0ab80f20d01bb470d9374 /gcc/opts.c | |
| parent | 52556f04772d3841a6042d2029cf7d0f5e8d5342 (diff) | |
| download | gcc-fa06ad0d58e8981afc7dd0e8965505bab04a5320.zip gcc-fa06ad0d58e8981afc7dd0e8965505bab04a5320.tar.gz gcc-fa06ad0d58e8981afc7dd0e8965505bab04a5320.tar.bz2 | |
re PR tree-optimization/38785 (huge performance regression on EEMBC bitmnp01)
PR tree-optimization/38785
* common.opt (ftree-partial-pre): New option.
* doc/invoke.texi: Document it.
* opts.c (default_options_table): Initialize flag_tree_partial_pre.
* tree-ssa-pre.c (do_partial_partial_insertion): Insert only if it will
benefit speed path.
(execute_pre): Use flag_tree_partial_pre.
Co-Authored-By: Maxim Kuvyrkov <maxim@codesourcery.com>
Co-Authored-By: Steven Bosscher <steven@gcc.gnu.org>
From-SVN: r186928
Diffstat (limited to 'gcc/opts.c')
| -rw-r--r-- | gcc/opts.c | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -499,6 +499,7 @@ static const struct default_options default_options_table[] = { OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 }, { OPT_LEVELS_3_PLUS, OPT_ftree_vectorize, NULL, 1 }, { OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 }, + { OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 }, /* -Ofast adds optimizations to -O3. */ { OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 }, |