On Tue, Oct 20, 2015 at 09:34:35PM +0300, Alexander Monakov wrote:
> On NVPTX, we don't need most of target.c functionality, except for GOMP_teams.
> Provide it as a copy of the generic implementation for now (it most likely
> will need to change down the line: on NVPTX we do need to spawn several
> thread blocks for #pragma omp teams).
>
> Alternatively, it might make sense to split GOMP_teams out of target.c into
> its own file (teams.c?), leaving target.c a 0-size stub in config/nvptx.
>
> * config/nvptx/target.c: New.
This is fine. I bet it will need changes on the compiler side too,
GOMP_teams has been written with rough idea of the dynamic parallelism,
we'll need to do something with private (per-CTA) vars, shared (global) vars
etc., dunno if with tweaks just in the late omp lowering pass after it
is lowered/expanded as OpenMP already, or if we'll need Martin's HSA
approach.
Jakub
