[Bug middle-end/30172] New: Operations with partly constant complex values not folded

[rguenth at gcc dot gnu dot org]

We do not fold for example

  __complex__ ( x, 0 ) * __complex__ ( 0, 1 )

or

  __complex__ ( x, 0 ) + __complex__ ( 0, y )


I have a partial patch.


-- 
           Summary: Operations with partly constant complex values not
                    folded
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: rguenth at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30172