[Bug middle-end/38750] New: (-A) * (-B) -> A * B folding should include constant B

[rguenth at gcc dot gnu dot org]

So we fold (1 - j) * -2 to (j - 1) * 2.


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           Summary: (-A) * (-B) -> A * B folding should include constant B
           Product: gcc
           Version: 4.4.0
            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=38750