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[Bug other/54857] Superfluous NOPs on Atom
- From: "pinskia at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 08 Oct 2012 18:50:47 +0000
- Subject: [Bug other/54857] Superfluous NOPs on Atom
- Auto-submitted: auto-generated
- References: <bug-54857-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54857
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-10-08 18:50:47 UTC ---
This was done by design for Atom see
http://gcc.gnu.org/ml/gcc-patches/2010-09/msg01104.html :
On Atom, the function return address isn't ready until 4 cycles after
function is entered.