[Bug 218387] -march=native or any specific CPU with clang seems to produce a lot of x87 instructions

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Apr 5 02:41:04 UTC 2017


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218387

--- Comment #1 from Adam Stylinski <kungfujesus06 at gmail.com> ---
Ahh, evidently this isn't a new issue.  Any value of -march that is later than
nocona results in x87 instructions being emitted all over the binary.

I'd still consider it a bug, though, as Apple & Linux's clang ports appear to
have correct behavior for these values.

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