On Thu, Aug 25, 2022 at 05:38:58PM +0200, Tobias Burnus wrote:
> On 25.08.22 16:54, Tobias Burnus wrote:
>
> The attached patch prepare for reverse-offload device->host
> function-address lookup by requesting (if needed) the on-device address.
>
>
> This patch adds the actual implementation for GCN. A variant would be
> to only generate .offload_func_table inside mkoffload when
> OMP_REQUIRES_REVERSE_OFFLOAD has been requested.
>
> This is currently effectively a no op as with [1/3] patch, always NULL
> is passed and as GOMP_OFFLOAD_get_num_devices returns <= 0 as soon as
> 'omp requires reverse_offload' has been specified.
>
> OK for mainline?
>
> Tobias
>
>
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> GCN: libgomp+mkoffload.cc: Prepare for reverse offload fn lookup
>
> Add support to GCN for reverse lookup of function name to prepare for
> 'omp target device(ancestor:1)'.
>
> gcc/ChangeLog:
>
> * config/gcn/mkoffload.cc (process_asm): Create .offload_func_table,
> similar to pre-existing .offload_var_table.
>
> libgomp/ChangeLog:
>
> * plugin/plugin-gcn.c (GOMP_OFFLOAD_load_image): Read
> .offload_func_table to populate rev_fn_table when requested.
Ok.
Jakub
