[LLVMdev] Stub LLVM backend wanted

[David Given]

I'm trying to port LLVM to a new architecture. I'm finding that the
initial bootstrapping stage of getting something which will build, even
if it doesn't work, is complex and rather disheartening --- there's this
huge cliff of difficulty in just getting all the boilerplate laid out
correctly, before getting to the fun stuff. The other backends are of
limited use here because, of course, they're cluttered up with code due
to being real backends.

So: does anyone have a stub backend I can use as a starting point?
Something which only has a few registers, implements no instructions
other than the minimum necessary to actually compile an empty function,
contains no custom optimisation passes, etc. From there I can start
incrementally adding features, testing at each stage.

(In addition, if anyone knows of any docs other than 'Writing an LLVM
backend' (which is very short on detail) or 'Creating an LLVM backend
for the Cpu0 architecture' (which is unfinished), I'd be really
interested...)

-- 
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│ language in which it is the least bit hard to write bad programs." ---
│ Flon's Axiom

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