[LLVMdev] Void values

Kenneth Uildriks kennethuil at gmail.com
Sat Jun 12 05:37:52 PDT 2010

Are there any platforms where it wouldn't Just Work if the code
generator generated a {} return everywhere it presently generates a
void return?  I'm not saying make those changes to the code generator,
I'm just asking if VMCore replaced void with {} would any code
generators need changing?  I don't think X86 would be affected - EAX
is not preserved even if the function returns void.

On Sat, Jun 12, 2010 at 6:23 AM, Duncan Sands <baldrick at free.fr> wrote:
>> I don't know of anyone working on it, but I'd really like to eliminate void.  It doesn't seem like a useful feature of the type system.  Functions can be changed to return {} for example.
> Not having a void type also means that people writing front-ends for C-like
> languages won't try to convert "void*" into a pointer to the LLVM void type
> and be confused when it doesn't work :)
> Ciao,
> Duncan.
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