Hi all,

This adds OpenMP 5.1's 'present' modifier to the to/from/map clauses
and 'defaultmap(present)'.

I have now committed that patch as r14-1579-g4ede915d5dde935a16df2c6640aee5ab22348d30,
or as attached.

Or rather: I have done so after revising the patch for the issues I noted before;
while doing so and when adding a bunch of additional tests, I found a few additional
issues, which have been fixed as well. Somehow, there cannot be too many testcases ...

Tobias

See previously in this thread for my review comments and Kwok's patch remarks, i.e.

On 28.04.23 19:26, Tobias Burnus wrote:
> On 17.02.23 12:45, Kwok Cheung Yeung wrote:
>> This is a revised version of the patch for the 'present' modifier for
>> OpenMP.
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