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| author | Jan Hubicka <hubicka@ucw.cz> | 2017-11-13 18:27:13 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2017-11-13 17:27:13 +0000 |
| commit | d4017fd365a9f56d98dd6a4287b447ae12c423db (patch) | |
| tree | 66ca893530261083ca4e45cb48b8ed35e9c390c7 | |
| parent | 2f02b2c29168b6db2a25deb8073557330f652508 (diff) | |
| download | gcc-d4017fd365a9f56d98dd6a4287b447ae12c423db.zip gcc-d4017fd365a9f56d98dd6a4287b447ae12c423db.tar.gz gcc-d4017fd365a9f56d98dd6a4287b447ae12c423db.tar.bz2 | |
* tree-ssa-sink.c (select_best_block): Do not use frequencies.
From-SVN: r254698
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/tree-ssa-sink.c | 6 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 241e9ca..beb406a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2017-11-13 Jan Hubicka <hubicka@ucw.cz> + + * tree-ssa-sink.c (select_best_block): Do not use frequencies. + 2017-11-13 Eric Botcazou <ebotcazou@adacore.com> PR lto/81351 diff --git a/gcc/tree-ssa-sink.c b/gcc/tree-ssa-sink.c index 1c5d7dd..5d801d3 100644 --- a/gcc/tree-ssa-sink.c +++ b/gcc/tree-ssa-sink.c @@ -226,8 +226,10 @@ select_best_block (basic_block early_bb, /* If BEST_BB is at the same nesting level, then require it to have significantly lower execution frequency to avoid gratutious movement. */ if (bb_loop_depth (best_bb) == bb_loop_depth (early_bb) - && best_bb->count.to_frequency (cfun) - < (early_bb->count.to_frequency (cfun) * threshold / 100.0)) + /* If result of comparsion is unknown, preffer EARLY_BB. + Thus use !(...>=..) rather than (...<...) */ + && !(best_bb->count.apply_scale (100, 1) + > (early_bb->count.apply_scale (threshold, 1)))) return best_bb; /* No better block found, so return EARLY_BB, which happens to be the |