[Cython] Control flow graph

Robert Bradshaw robertwb at math.washington.edu
Tue Feb 15 08:21:40 CET 2011

On Mon, Feb 14, 2011 at 9:49 PM, Vitja Makarov <vitja.makarov at gmail.com> wrote:
> 2011/2/15 Robert Bradshaw <robertwb at math.washington.edu>:
>> On Sun, Feb 13, 2011 at 11:40 PM, Vitja Makarov <vitja.makarov at gmail.com> wrote:
>>> Hi!
>>> In order to implement "reaching definitions" algorithm.
>>> I'm now working on control-flow (or data-flow) graph.
>>> Here is funny picture made with graphviz ;)
>>> http://piccy.info/view3/1099337/ca29d7054d09bd0503cefa25f5f49420/1200/
>> Cool. Any plans on handling exceptions?
> Sure, but I don't have much time for this :(
> Linear block inside try...except body should be split by assignments
> and each subblock should point to exception handling entry point.

Would every possible failing sub-expression have to point to the
exception handling point(s)? I suppose it depends on whether you'll be
handling more than assignment tracking.

> As result I want to have set of possible assignments for each NameNode position.
> So handling of uninitialized variables, unused, unused results should be easy,
> later it may help to implement local variable deletion. And guess that
> could help type inference.


- Robert

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