[nvptx] vector length patch series

[Tom de Vries]

On 14-12-18 20:58, Tom de Vries wrote:
> 0003-openacc-Add-target-hook-TARGET_GOACC_ADJUST_PARALLEL.patch

> 0017-nvptx-Enable-large-vectors.patch

1.

If I void nvptx_adjust_parallelism like this:
...
static unsigned
nvptx_adjust_parallelism (unsigned inner_mask, unsigned outer_mask)
{
  return default_goacc_adjust_parallelism (inner_mask, outer_mask);
}
...
I don't run into any failing tests. From what I can tell, the only
test-case that the proposed implementation of the hook has an effect on,
is the worker vector loop in vred2d-128.c, but that one is passing.

Can you confirm that this hook is in fact needed? Does this test fail on
a specific card? Or is there another test-case that exercises this?

2.

If you have a test-case where this is indeed failing without the
proposed hook implementation, then please try to remove the hardcoding
of vector_length > 32 from the test-source and instead set it using
-fopenacc-dim. AFAIU, the proposed hook does not handle that case, so
you should be able to make it fail.
If so, can you test whether attached implementation fixes it?

Thanks,
- Tom
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