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| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/common/config/i386/i386-common.c | 3 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5d9d2f8..109936d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-11-07 Segher Boessenkool <segher@kernel.crashing.org> + + PR rtl-optimization/67864 + * common/config/i386/i386-common.c (ix86_option_optimization_table) + <OPT_freorder_blocks_algorithm_>: Use REORDER_BLOCKS_ALGORITHM_STC + at -Os and up. + 2015-11-07 Richard Sandiford <richard.sandiford@arm.com> * trans-mem.c (is_tm_pure_call): Use gimple_call_flags for diff --git a/gcc/common/config/i386/i386-common.c b/gcc/common/config/i386/i386-common.c index 0f8c3e1..49899bd 100644 --- a/gcc/common/config/i386/i386-common.c +++ b/gcc/common/config/i386/i386-common.c @@ -997,6 +997,9 @@ static const struct default_options ix86_option_optimization_table[] = { 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 }, + /* The STC algorithm produces the smallest code at -Os, for x86. */ + { OPT_LEVELS_2_PLUS, OPT_freorder_blocks_algorithm_, NULL, + REORDER_BLOCKS_ALGORITHM_STC }, /* 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 }, |