[M3devel] Open CM3 regression tests

[Olaf Wagner]

Quoting Tony Hosking <hosking at cs.purdue.edu>:

> Are your sets larger than a single word?  The M3 frontend compiles
> small sets (elements <= BITSIZE(Word.T)) differently from large
> (elements > BITSIZE(Word.T)).  The out-of-line set operations are only
> for large sets.

These are small sets. There are other tests for large sets, which seem
to succeed.

So obviously the problem is in the cm3cg backend, as in m3middle
set_compare will only write

     Cmd   (u, OpName [op]);
     Int   (u, s);
     TName (u, t);

which then gets read by the actual code generator.
I guess one of you guys will be much faster tracking this down
through the gcc tree construction and manipulation code. It's been
several years that I have had a look at that.

Olaf
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