[gomp4, 0/23] Initial submission/RFC: WIP ptx backend

[Joseph S. Myers]

On Mon, 9 Dec 2013, Bernd Schmidt wrote:

>  * Everything must live in an address space. There are several for
>    global variables, constant data, and local variables. We have C
>    frontend changes to apply and deal with implicit address spaces.

I think implicit address spaces should be dealt with at gimplification or 
later: the datastructures inside the front end should reflect the 
qualifiers in C standard terms, which don't include these implicit address 
spaces, and putting things in these address spaces should be part of a 
lowering pass.

In general I'd rather front ends only did target-specific things where 
needed for language semantics (e.g. knowledge of type sizes and offsets in 
structs).  (For example, I'd like handling of 
targetm.calls.promote_prototypes to move out of the front ends.)

-- 
Joseph S. Myers
joseph@codesourcery.com