[Bug middle-end/32279] New: Fold 1.0/sqrt(x/y) to sqrt(y/x)

[rguenth at gcc dot gnu dot org]

This may even work for -funsafe-math-optimizations only (we round differently).
One has to enumerate all interesting cases (mainly x == 0) and see if NaN/Inf
are properly preserved in all cases.


-- 
           Summary: Fold 1.0/sqrt(x/y) to sqrt(y/x)
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32279