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[Bug target/84522] GCC does not generate cmpxchg16b when mcx16 is used
- 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: Thu, 22 Feb 2018 20:47:51 +0000
- Subject: [Bug target/84522] GCC does not generate cmpxchg16b when mcx16 is used
- Auto-submitted: auto-generated
- References: <bug-84522-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84522
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
IIRC this was done because there is no atomic load/stores or a way to do
backwards compatible.