[Bug target/47440] Use LCM for vzeroupper insertion

[vbyakovl23 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47440

Vladimir Yakovlev <vbyakovl23 at gmail dot com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |ASSIGNED

--- Comment #3 from Vladimir Yakovlev <vbyakovl23 at gmail dot com> 2012-08-22 
15:25:54 UTC ---
I implemented vzeroupper insertion using mode switching technique.
http://gcc.gnu.org/ml/gcc-patches/2012-08/msg01429.html