Hi.
Did anybody use Dead code elimination (DCE)? I played a bit with it the
last days -
it basically does as it's written "Eliminate assignment instructions whose
results are not
used".
I managed to run successfully DCE on reasonably complex C functions. There
is a small
trick, though, you need to do in order to run DCE correctly: since it uses the
sid's of
the CIL statements, you need to run the Cfg.cfgFun, which also initializes
these sid's -
this is basically a small patch to the deadcodelim.ml I can provide .
I have a question: did anybody implement copy propagation? Is this part of
the
partial.ml module that does also constant folding among others? I ask about
copy and
constant propagation because these would provide further opportunity for
removal in DCE?
One last thing: I guess the function removeUnusedVars can be substituted
with
Rmtmps.removeUnusedTemps, right?
Thanks,
Alex
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