http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59597
Bug ID: 59597
Summary: Performance degradation on Coremark after r205074
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: izamyatin at gmail dot com
Target: x86
Created attachment 31510
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31510&action=edit
reduced test
Degradation could be seen at -Ofast for the attached test which similar to the
Coremark codes
It seems that jump threading here performs unnecessary nodes duplication and as
a result if-conversion doesn't happen.
