[Bug target/17619] Non-optimal code for -mfpmath=387,sse

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-01 14:27 -------
Actually the most optimial code would be:
_Z6foobarv:
.LFB2:  
        pushl   %ebp
.LCFI0: 
        movl    %esp, %ebp
.LCFI1: 
        subl    $24, %esp
.LCFI2: 
        movaps  a, %xmm0
        mulps   b, %xmm0
        movaps  %xmm0, -24(%ebp)
        fldz
        fadds   -24(%ebp)
        fadds   -20(%ebp)
        fadds   -16(%ebp)
        fadds   -12(%ebp)
        leave
        ret

But to do that we need the tree vectorizer to become better and also split the loop into two.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17619