The following disables bit-CCP (which can cause quite some
iteration with loops) at -Og.
Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.
Richard.
2014-07-15 Richard Biener <rguent...@suse.de>
* opts.c (default_options_table): Disable bit-ccp at -Og.
Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 212548)
+++ gcc/opts.c (working copy)
@@ -440,7 +440,7 @@ static const struct default_options defa
{ OPT_LEVELS_1_PLUS, OPT_fshrink_wrap, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 },
- { OPT_LEVELS_1_PLUS, OPT_ftree_bit_ccp, NULL, 1 },
+ { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 },
{ OPT_LEVELS_1_PLUS, OPT_ftree_dse, NULL, 1 },
