OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

bb-reorder.c (better_edge_p): Do not build traces across abnormal/eh edges...

Browse Source 
* bb-reorder.c (better_edge_p): Do not build traces across abnormal/eh
	edges; zero probability is not better than uninitialized.

From-SVN: r250033
This commit is contained in:
Jan Hubicka 2017-07-06 18:12:01 +02:00 committed by Jan Hubicka
parent 5094f7d540
commit b0a12b5e46
2 changed files with 13 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2017-07-06 Jan Hubicka <hubicka@ucw.cz>
* bb-reorder.c (better_edge_p): Do not build traces across abnormal/eh
edges; zero probability is not better than uninitialized.
2017-07-06 Maxim Ostapenko <m.ostapenko@samsung.com>
* asan.h (asan_sanitize_allocas_p): Declare.

9
gcc/bb-reorder.c
View File

@ -957,7 +957,14 @@ better_edge_p (const_basic_block bb, const_edge e, profile_probability prob,
return !cur_best_edge
|| cur_best_edge->dest->index > e->dest->index;
if (prob > best_prob + diff_prob || !best_prob.initialized_p ())
/* Those edges are so expensive that continuing a trace is not useful
performance wise. */
if (e->flags & (EDGE_ABNORMAL | EDGE_EH))
return false;
if (prob > best_prob + diff_prob
|| (!best_prob.initialized_p ()
&& prob > profile_probability::guessed_never ()))
/* The edge has higher probability than the temporary best edge. */
is_better_edge = true;
else if (prob < best_prob - diff_prob)