[Bug 211864] LLVM is using AVX instructions for CPUTYPE=btver1

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Mon Aug 15 17:21:58 UTC 2016


Dimitry Andric <dim at FreeBSD.org> changed:

           What    |Removed                     |Added
             Status|Open                        |In Progress
           Assignee|freebsd-bugs at FreeBSD.org    |dim at FreeBSD.org

--- Comment #1 from Dimitry Andric <dim at FreeBSD.org> ---
Created attachment 173705
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=173705&action=edit
Import upstream fix to stop using xsave/avx on btver1 CPUs

Michel, can you please try out this patch?  As far as I can see, this causes
clang to not generate AVX instructions anymore, at least for that sudo port.

But I would appreciate independent verification. :)

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