re: [GCC 4.2 Project] Omega data dependence test

[Dan Kegel <dank at kegel dot com>]

Sebastian Pop wrote:
> [http://gcc.gnu.org/wiki/Omega%20data%20dependence%20test]
> ...
I can't understand a word of the proposal.
Mabe you were trying to be funny, but it ended up being obscure.
If the average gcc developer can understand it, then
it doesn't matter that I can't, but I have a feeling
others might find it hard to read, too.

But this part caught my eye:

>   In a further future, when GCC will finally have a proper
>   intermediate representation that can be stored to disk and then
>   loaded back to memory, we will transform the SEB into GCC
>   contributors.  The plan is to propose the integration of a delta
>   debugger (DD) into GCC such that the regression flags will directly
>   output a reduced pattern that will show the regression.  A
>   pattern-zilla will collect the optimal solution and a testcase that
>   show the weakness of a heuristic function.

Since I started playing with delta debugging for
tracking down ICEs, I've been thinking it might
be nice to have an option to gcc to perform
delta debugging automatically if an ICE occurs,
and have it automatically submit the minimized
testcase.  Sounds like you're talking about something
similar, but not for ICEs.  I wish I understood your
proposal better.
- Dan

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