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On Fri, 02 Dec 2011 20:36:16 -0500
Mike Gilbert <floppym@g.o> wrote:
> I've never thought of -mfpmath=sse as a "ricer" flag. If anything, it
> should make floating point calculations more consistent.
Not really. It's it's extremely target processor dependent and generally the
defaults are the best settings. It can vary a lot based on the SSE
instructions and number of registers available and the register allocator and
scheduler are optimized with that in mind.
> The varying behavior between gcc versions seems like a possibly good
> reason to not "support" it, but I'm not familiar with this. Has it
> stabilized recently or is it still in flux?
I'd say it's still in flux. The register allocator and instruction scheduler
were both rewritten for 4.4 and have seen a lot of work since then.
--
fonts, gcc-porting, it makes no sense how it makes no sense
toolchain, wxwidgets but i'll take it free anytime
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