Previously we had a FunctionSigFlags, but it's more flexible
to just have one set of output flags that apply to the entire
process and just pipe the entire set of flags through the
output process.
This will be useful when we start allowing the user to customize
the outputting behavior.
llvm-svn: 340894
This is a pretty large refactor / re-write of the Microsoft
demangler. The previous one was a little hackish because it
evolved as I was learning about all the various edge cases,
exceptions, etc. It didn't have a proper AST and so there was
lots of custom handling of things that should have been much
more clean.
Taking what was learned from that experience, it's now
re-written with a completely redesigned and much more sensible
AST. It's probably still not perfect, but at least it's
comprehensible now to someone else who wants to come along
and make some modifications or read the code.
Incidentally, this fixed a couple of bugs, so I've enabled
the tests which now pass.
llvm-svn: 340710
