http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47440
Summary: Use LCM for vzeroupper optimization Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassig...@gcc.gnu.org ReportedBy: hjl.to...@gmail.com From: http://gcc.gnu.org/ml/gcc-patches/2010-12/msg01923.html http://gcc.gnu.org/ml/gcc-patches/2011-01/msg00967.html LCM infrastructure (see lcm.c) is suggested for placing vzerouppers at optimum points. Targeting 4.7.