[Bug target/32301] int __attribute__((vector_size(8))) doesn't use %mm0, produces ugly code

[tomash dot brechko at gmail dot com]

------- Comment #2 from tomash dot brechko at gmail dot com  2007-06-12 16:43 
-------
Sorry, I failed to find two other reports you reference, maybe I'm repeating
someone's questions then.  Okay, there are reasons not to use %mm0, but why
%xmm0 is not used then?  Something like

f:
        movq    b, %xmm0
        movq    a, %xmm1
        paddd   %xmm1, %xmm0
        movq    %xmm0, c
        ret

And the other question is if copying of vector onto the stack is a misfeature,
or there are reasons for doing that in synthesized vector operations, so this
won't change.  Thank you!


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32301