[Bug target/40030] New: vector float * vector float + vector float should produce only vmaddfp

[pinskia at gcc dot gnu dot org]

Take:
#define vector __vector

vector float f(vector float a, vector float b, vector float c)
{
  return a * b + c;
}
--- CUT ---
Currently for Powerpc (with -O2 -maltivec), we get:
        vspltisw 0,-1
        vslw 0,0,0
        vmaddfp 3,2,3,0
        vaddfp 2,3,4

But this should really just produce:
        vmaddfp 2,2,3,4


-- 
           Summary: vector float * vector float + vector float should
                    produce only vmaddfp
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
GCC target triplet: powerpc*-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40030