[nvptx libgomp plugin] Build only in supported configurations (was: [nvptx offloading] Only 64-bit configurations are currently supported)

[Thomas Schwinge]

Hi!

On 2015-07-08T17:03:02+0200, I wrote:
> On Wed, 18 Feb 2015 09:50:15 +0100, I wrote:
>> So far, we have concentrated only on the 64-bit x86_64 configuration;
>> 32-bit has several known issues to be resolved.
>> <https://gcc.gnu.org/PR65099> filed.

(This still holds, and is unlikely to ever get addressed.)

> I have committed the following patch in r225560.  This gets us rid of the
> lots of "expected FAILs" in the 32-bit part of
> RUNTESTFLAGS='--target_board=unix\{-m64,-m32\}' testing, for example.
>
> commit fe265ad3c9624da88f43be349137696449148f4f
> Author: tschwinge <tschwinge@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date:   Wed Jul 8 14:59:59 2015 +0000
>
>     [nvptx offloading] Only 64-bit configurations are currently supported
>
>       PR libgomp/65099
>       gcc/
>       * config/nvptx/mkoffload.c (main): Create an offload image only in
>       64-bit configurations.

(That remains in place.)

>       libgomp/
>       * plugin/plugin-nvptx.c (nvptx_get_num_devices): Return 0 if not
>       in a 64-bit configuration.

That, for reasons given in the commit log, I've just refined, pushed
"[nvptx libgomp plugin] Build only in supported configurations" to master
branch in commit 6106dfb9f73a33c87108ad5b2dcd4842bdd7828e, and
cherry-picked into releases/gcc-10 branch in commit
1e56a7c9a6631b217299b2ddcd5c4d497bb3445e, releases/gcc-9 branch in commit
0f1e1069a753e912b058f0d4bf599f0edde28408, releases/gcc-8 branch in commit
f9267925c648f2ccd9e4680b699e581003125bcf, see attached.


Grüße
 Thomas


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