Hi!
When looking at the hash table memset -> loop patch, I was looking at when
-ftree-loop-distribute-patterns is enabled and noticed since
r271595 / PR88440 it is actually enabled at -O2+ rather than -O3+.
This patch moves it to the proper section, so that OPT_LEVELS_2_PLUS are
together, and updates invoke.texi to match that change.
Bootstrapped/regtested on x86_64-linux and i686-linux, committed to trunk as
obvious.
2019-12-11 Jakub Jelinek <ja...@redhat.com>
* opts.c (default_options_table): Move -ftree-loop-distribute-patterns
entry from -O3 or later section to -O2 or later section.
* doc/invoke.texi (-ftree-loop-distribute-patterns): Mention the
option is enabled by default at -O2+ rather than just at -O3.
--- gcc/opts.c.jj 2019-12-09 00:21:31.694097994 +0100
+++ gcc/opts.c 2019-12-11 17:03:12.623708255 +0100
@@ -508,6 +508,7 @@ static const struct default_options defa
{ OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
{ OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
{ OPT_LEVELS_2_PLUS, OPT_finline_functions, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
/* -O2 and above optimizations, but not -Os or -Og. */
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
@@ -533,7 +534,6 @@ static const struct default_options defa
{ OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_fsplit_paths, NULL, 1 },
- { OPT_LEVELS_2_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 },
{ OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
--- gcc/doc/invoke.texi.jj 2019-12-10 22:03:21.382798370 +0100
+++ gcc/doc/invoke.texi 2019-12-11 17:03:50.828122335 +0100
@@ -9782,8 +9782,8 @@ It is also enabled by @option{-fprofile-
@item -ftree-loop-distribute-patterns
@opindex ftree-loop-distribute-patterns
Perform loop distribution of patterns that can be code generated with
-calls to a library. This flag is enabled by default at @option{-O3}, and
-by @option{-fprofile-use} and @option{-fauto-profile}.
+calls to a library. This flag is enabled by default at @option{-O2} and
+higher, and by @option{-fprofile-use} and @option{-fauto-profile}.
This pass distributes the initialization loops and generates a call to
memset zero. For example, the loop
Jakub
