http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57806
Bug ID: 57806
Summary: Waste work in propagate_nothrow()
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
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 "propagate_nothrow()" in gcc/ipa-pure-const.c, the loop on line 1432
should break immediately after "can_throw" is set to "true". All the iterations
after "can_throw" set to "true" do not perform any useful work, at best they
just set "can_throw" again to "true".
