http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57782
Bug ID: 57782
Summary: Waste work in remove_path()
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
Created attachment 30423
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30423&action=edit
Suggested patch
The problem appears in revision 200588 in version 4.9. I have attached a patch
that fixes it.
In method "remove_path()" in cfgloopmanip.c, the loop on line 343 should break
immediately after "irred_invalidated" is set to "true". All the iterations
after "irred_invalidated" set to "true" do not perform any useful work, at best
they just set "irred_invalidated" again to "true".
