https://travis-ci.org/dropbox/pyston/jobs/84262536

gistfile1.txt

enclosing_stmt: #7 = #5._is_column(#6)
after_expr:     #16.get(#17, #18)

39 blocks
Block 0 'entry'; Predecessors: Successors: 1 2
    "generate/update a :class:`.ColumnProprerty` given a
        :class:`.Column` object. "
    #0 = util
    #1 = prop
    #2 = #0.to_list(#1)
    columns = #2
    #3 = columns
    #4 = #3[0]
    column = #4
    #5 = expression
    #6 = column
    #7 = #5._is_column(#6)
    #8 = not (#7)
    if :NONZERO(#8) goto 1 else goto 2
Block 1 'iftrue'; Predecessors: 0 Successors:
    #9 = sa_exc
    #10 = key
    #11 = prop
    #12 = (#10, #11)
    #13 = "%s=%r is not an instance of MapperProperty or Column"%#12
    #14 = #9.ArgumentError(#13)
    raise #14
Block 2 'iffalse'; Predecessors: 0 Successors: 4 21
    #15 = self
    #16 = #15._props
    #17 = key
    #18 = None
    #19 = #16.get(#17, #18)
    prop = #19
    #20 = isinstance
    #21 = prop
    #22 = properties
    #23 = #22.ColumnProperty
    #24 = #20(#21, #23)
    if :NONZERO(#24) goto 4 else goto 21