[PATCH] Add support for parsing ARM symbol variants on ELF targets

[David Peixotto]

> Hi David,
> 
> > I've attached a patch that removes most of the VK_ARM_* types along
> > with parsing the variants correctly for ARM.
> 
> Thanks! I love seeing refactoring like this. I've got one comment:
> 
> +      if (Lexer.isNot(AsmToken::RParen)) {
> +          return Error(Lexer.getTok().getLoc(), "unexpected token in
> + variant");
> 
> I think this error message could be more helpful if it mentions that we
> expect a closing paren. I'd be happy for you to fix that and commit
> without posting another patch for review -- I'll take a look at the
> commit.

Ok, I will improve the error message and commit. Thanks!