http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57812
Bug ID: 57812
Summary: Waste work in computed_jump_p()
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pchang9 at cs dot wisc.edu
CC: nistor1 at illinois dot edu
The problem appears in revision 200588 in version 4.9.
In method "computed_jump_p()" in gcc/rtlanal.c, the loop on line 2801 should
break immediately after "has_use_labelref" is set to "1". All the iterations
after "has_use_labelref" set to "1" do not perform any useful work, at best
they just set "has_use_labelref" again to "1".
