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| author | Teresa Johnson <tejohnson@google.com> | 2013-11-19 22:13:49 +0000 |
|---|---|---|
| committer | Teresa Johnson <tejohnson@gcc.gnu.org> | 2013-11-19 22:13:49 +0000 |
| commit | 32ad0f03298dd5edd015fa78dcfbb96d66c9a80d (patch) | |
| tree | 0ee342f407ede127f48bbc6e9ebf78572744d167 /gcc | |
| parent | 2ae367c1e7081c2ec9a47267551d197002e79b23 (diff) | |
| download | gcc-32ad0f03298dd5edd015fa78dcfbb96d66c9a80d.zip gcc-32ad0f03298dd5edd015fa78dcfbb96d66c9a80d.tar.gz gcc-32ad0f03298dd5edd015fa78dcfbb96d66c9a80d.tar.bz2 | |
i386-common.c: Enable -freorder-blocks-and-partition at -O2 and up for x86.
2013-11-19 Teresa Johnson <tejohnson@google.com>
* common/config/i386/i386-common.c: Enable
-freorder-blocks-and-partition at -O2 and up for x86.
* doc/invoke.texi: Update -freorder-blocks-and-partition default.
* opts.c (finish_options): Only warn if -freorder-blocks-and-
partition was set on command line.
From-SVN: r205058
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/common/config/i386/i386-common.c | 2 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 2 | ||||
| -rw-r--r-- | gcc/opts.c | 21 |
4 files changed, 24 insertions, 9 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9c79ee9..9cd78e9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2013-11-19 Teresa Johnson <tejohnson@google.com> + + * common/config/i386/i386-common.c: Enable + -freorder-blocks-and-partition at -O2 and up for x86. + * doc/invoke.texi: Update -freorder-blocks-and-partition default. + * opts.c (finish_options): Only warn if -freorder-blocks-and- + partition was set on command line. + 2013-11-19 Sriraman Tallam <tmsriram@google.com> * final.c (final_scan_insn): Emit a label for the split diff --git a/gcc/common/config/i386/i386-common.c b/gcc/common/config/i386/i386-common.c index 341637b..e07479d 100644 --- a/gcc/common/config/i386/i386-common.c +++ b/gcc/common/config/i386/i386-common.c @@ -789,6 +789,8 @@ static const struct default_options ix86_option_optimization_table[] = { /* Enable redundant extension instructions removal at -O2 and higher. */ { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 }, + /* Enable function splitting at -O2 and higher. */ + { OPT_LEVELS_2_PLUS, OPT_freorder_blocks_and_partition, NULL, 1 }, /* Turn off -fschedule-insns by default. It tends to make the problem with not enough registers even worse. */ { OPT_LEVELS_ALL, OPT_fschedule_insns, NULL, 0 }, diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index d4a6639..e005422 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -8173,6 +8173,8 @@ exception handling, for linkonce sections, for functions with a user-defined section attribute and on any architecture that does not support named sections. +Enabled for x86 at levels @option{-O2}, @option{-O3}. + @item -freorder-functions @opindex freorder-functions Reorder functions in the object file in order to @@ -737,9 +737,10 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set, && opts->x_flag_reorder_blocks_and_partition && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) { - inform (loc, - "-freorder-blocks-and-partition does not work " - "with exceptions on this architecture"); + if (opts_set->x_flag_reorder_blocks_and_partition) + inform (loc, + "-freorder-blocks-and-partition does not work " + "with exceptions on this architecture"); opts->x_flag_reorder_blocks_and_partition = 0; opts->x_flag_reorder_blocks = 1; } @@ -752,9 +753,10 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set, && opts->x_flag_reorder_blocks_and_partition && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)) { - inform (loc, - "-freorder-blocks-and-partition does not support " - "unwind info on this architecture"); + if (opts_set->x_flag_reorder_blocks_and_partition) + inform (loc, + "-freorder-blocks-and-partition does not support " + "unwind info on this architecture"); opts->x_flag_reorder_blocks_and_partition = 0; opts->x_flag_reorder_blocks = 1; } @@ -769,9 +771,10 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set, && targetm_common.unwind_tables_default && (ui_except == UI_SJLJ || ui_except >= UI_TARGET)))) { - inform (loc, - "-freorder-blocks-and-partition does not work " - "on this architecture"); + if (opts_set->x_flag_reorder_blocks_and_partition) + inform (loc, + "-freorder-blocks-and-partition does not work " + "on this architecture"); opts->x_flag_reorder_blocks_and_partition = 0; opts->x_flag_reorder_blocks = 1; } |