Re: Reducing fortran testcase with delta.

[VandeVondele Joost <vondele at pci dot uzh dot ch>]

Hi Li,

I've attached 'Fortran-aware' delta. I tries to guess cut a Fortran file 
in more reasonable places (e.g. between subroutine boundaries, after 
enddos). It works reasonably well, but is a hack.

Especially with Fortran90 and modules, iterated delta runs can help a lot 
(i.e. first runs removes 'public/use' module statements, next round cleans 
more efficiently). It also features 'randomized' bisection. That helps to 
reduce towards a minimized testcase when iterating delta runs.

I usually call it with the following script:

> cat do_many
for i in `seq 1 30`
do
  ~/delta-2006.08.03/delta -suffix=.f90 -test=delta.script -cp_minimal=small.f90  bug.f90
  cp small.f90 small.f90.$i
  cp small.f90 bug.f90
done

Cheers,

Joost

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