[LLVMdev] Directly emit LLVM IR?

[Neil Booth]

Jan Rehders wrote:-

> Hi,
> 
> >? Emit LLVM assembly from your compiler's native language.
> >for: very straightforward to get started
> >against: the .ll parser is slower than the bitcode reader when  
> >interfacing to the middle end
> >against: you'll have to re-engineer the LLVM IR object model and asm  
> >writer in your language
> >against: it may be harder to track changes to the IR
> 
> One more problem with this: in order to emit float constants you have  
> to convert them to hexadecimal notation which I found nontrivial. My  
> pet language is still lacking proper float support because of this.  
> I'm not aware whether there are more pitfalls like this lurking  
> around. (Time to finally move to the ocaml bindings.. :))

APFloat can emit hex representation of any float to desired precision
and rounding method.

Neil.