[cfe-dev] How to add new target?

[Artur Pietrek]

>
> Hi Artur,
>

Hi Daniel


> > Hi all,
> > so after "greping" the code I was able to do (more or less) everything I
> > wanted to do.
>
> As you have discovered, this stuff isn't very well documented yet. Do
> you feel like writing up a blurb we could add to our Internals Manual
> describing what you have discovered?
>

I'll try when I'll make it work correct ;)

BTW I've noticed strange behaviour. When I switched from llvm-gcc to clang,
my benchmarks stopped working. When I compile simple code:

char array[] =
"+0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz";

int main() {
  return array[31];
}

like this:
clang -ccc-host-triple mycpu -O0 -S hello.c -o hello.s

The code is wrong, to be precise in one instruction I get
lbs $r16 = 0[$r17] instead of lbs $r16 = 31[$r17]

but the code is correct when I do it like this:
clang -ccc-host-triple mycpu -O0 hello.c -c -emit-llvm -o hello.bc
llc -march=mycpu hello.bc -o hello.s


Am I missing something? Shouldn't these two be equivalent?
Thanks in advance.

Artur
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