http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57276
Bug ID: 57276
Summary: Waste work in
cgraph_edge_brings_all_agg_vals_for_node()
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: pchang9 at cs dot wisc.edu
Created attachment 30111
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30111&action=edit
Suggested patch
The problem appears in version 4.9 and in revision 198887. I have attached
a one-line patch that fixes it.
In method "cgraph_edge_brings_all_agg_vals_for_node()" in ipa-cp.c, the
loop in 3210 should break immediately after "found" is set to "true".
All the iterations after "found" is set to "true" do not perform any
useful work, at best they just set "found" again to "true".
