[Bug target/24073] (vector float){a, b, 0, 0} code gen is not good

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-27 14:33 -------
(In reply to comment #4)
> I think that following example wins the contest:
> 
> vector float f(void) { return (vector float){ a, a, b, b}; }

For this, it is a different bug.  The issue with the above is that ix86_expand_vector_init_duplicate check 
for mmx_okay is bad.
Currently, we have
      if (!mmx_ok && !TARGET_SSE)
but I if I change it to:
      if (!mmx_ok)
we get:
        movss   _a, %xmm0
        movss   _b, %xmm1
        unpcklps        %xmm0, %xmm0
        unpcklps        %xmm1, %xmm1
        movlhps %xmm1, %xmm0
Which looks ok to me.  That testcase should be opened into another bug as it is obviously wrong.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24073