http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50295
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-09-06
08:15:21 UTC ---
We have:
<bb 4>:
# DEBUG this => this_2(D)
reason_15 = reason_10(D);
reason_17 = reason_15;
# DEBUG reason => reason_17
D.137092_16 = &this_2(D)->D.122214;
mozilla::net::PWyciwygChannelChild::Send__delete__ (D.137092_16);
D.132395_6 = 0;
and ccp (substitute_and_fold called from ccp_finalize) decides (because
has_zero_uses is true for reason_17) to remove reason_17 = reason_15; stmt
first, which during gsi_remove adds a # DEBUG D#xxx => reason_15 stmt.
Then reason_15 = reason_10(D); is being removed, but for some reason the newly
added debug stmt isn't found during FOR_EACH_IMM_USE_FAST for reason_15.
