[Bug target/17381] New: Unnecessary register move for float extend

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

double d;
float f;

void test1(float fParm)
{
  d = fParm;
  f = fParm;
}

test1:
        lwz 9,LC..1(2)
        fmr 0,1 <--- unnecessary register copy introduced by extendsfdf2
        lwz 11,LC..0(2)
        stfs 1,0(9)
        stfd 0,0(11)
        blr

-- 
           Summary: Unnecessary register move for float extend
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dje at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: *-*-*
  GCC host triplet: *-*-*
GCC target triplet: powerpc-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17381