http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53823
John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
--- Comment #16 from John David Anglin <danglin at gcc dot gnu.org> 2012-08-01
00:30:40 UTC ---
The first shift amount seems to come from this statement
in expand_mult_const:
int log = alg->log[opno];
The algorithm choice seems cost related, so it's starting
to make a bit of sense that this broke in 189441.
