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| author | Jan Hubicka <hubicka@ucw.cz> | 2017-07-03 16:40:46 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2017-07-03 14:40:46 +0000 |
| commit | 2f70a97992aefc22b56cbee13ccd2bb04c6aaa6f (patch) | |
| tree | b971b49f4f54cce7db5fb1c43c9444677e53dbe9 /gcc/tree-ssa-threadupdate.c | |
| parent | d31415ba1989c3d51c536fbba6a976b527213e44 (diff) | |
| download | gcc-2f70a97992aefc22b56cbee13ccd2bb04c6aaa6f.zip gcc-2f70a97992aefc22b56cbee13ccd2bb04c6aaa6f.tar.gz gcc-2f70a97992aefc22b56cbee13ccd2bb04c6aaa6f.tar.bz2 | |
re PR rtl-optimization/81290 (ICE in update_br_prob_note)
PR middle-end/81290
* predict.c (force_edge_cold): Be more careful about propagation
backward.
* profile-count.h (profile_probability::guessed,
profile_probability::fdo, profile_count::guessed, profile_count::fdo):
New.
* tree-ssa-threadupdate.c (recompute_probabilities): Result is guessed.
* gcc.c-torture/compile/pr81290.c: New.
From-SVN: r249924
Diffstat (limited to 'gcc/tree-ssa-threadupdate.c')
| -rw-r--r-- | gcc/tree-ssa-threadupdate.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/tree-ssa-threadupdate.c b/gcc/tree-ssa-threadupdate.c index f5bc95f..235a907 100644 --- a/gcc/tree-ssa-threadupdate.c +++ b/gcc/tree-ssa-threadupdate.c @@ -908,7 +908,7 @@ recompute_probabilities (basic_block bb) /* Prevent overflow computation due to insane profiles. */ if (esucc->count < bb->count) - esucc->probability = esucc->count.probability_in (bb->count); + esucc->probability = esucc->count.probability_in (bb->count).guessed (); else /* Can happen with missing/guessed probabilities, since we may determine that more is flowing along duplicated @@ -1051,7 +1051,8 @@ freqs_to_counts_path (struct redirection_data *rd) if (ein->probability.initialized_p ()) ein->count = profile_count::from_gcov_type (apply_probability (ein->src->frequency * REG_BR_PROB_BASE, - ein->probability.to_reg_br_prob_base ())); + ein->probability + .to_reg_br_prob_base ())).guessed (); else /* FIXME: this is hack; we should track uninitialized values. */ ein->count = profile_count::zero (); |