llvm dev - Feb 2013 - [LLVMdev] Argument Lowering

Hi David,

On 12/02/13 18:46, dag at cray.com wrote:
> Duncan Sands <baldrick at free.fr> writes:
>
>> Rather than trying to have LLVM codegen take care of ABI issues (which
means
>> passing all kinds of extra information in the IR), another possibility
is to
>> have LLVM provide a helper library for generating correct IR.  You
would say
>> to the library: my parameter is a union type with these fields
(described
>> using C/C++ language concepts such as unions, POD etc), and it would
tell you
>> what IR to output (or output it for you).  This library could then be
used by
>> clang and every front-end confronted with ABI issues.  There is a bug
report
>> about this somewhere.
>
> That sounds like an excellent idea.  I am basically at the point of
> rewriting our argument handling due to some past sub-optimal design
> choices.  I can't promise anything at the moment (gotta go through
> corporate) but it would be in my interest to contribute that code to
> such a library.
I guess you could try to factor Clang's ABI code out.

Ciao, Duncan.

On Tue, Feb 12, 2013 at 1:01 PM, Duncan Sands <baldrick at free.fr> wrote:
> I guess you could try to factor Clang's ABI code out.
>
Wasn't Dave Abrahams (CC'd) exploring in this direction?

-- Sean Silva
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on Tue Feb 12 2013, Sean Silva <silvas-AT-purdue.edu> wrote:
> On Tue, Feb 12, 2013 at 1:01 PM, Duncan Sands <baldrick at free.fr>
> wrote:
>
>     I guess you could try to factor Clang's ABI code out.
>
>
> Wasn't Dave Abrahams (CC'd) exploring in this direction?
I was, and I may yet pursue that job further.  I'll have to talk to my
new colleagues about that in a couple weeks.

-- 
Dave Abrahams