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For `map`, the following restriction changed in OpenMP 5.0:
* OpenMP 4.5 [2.15.5.1, Restrictions]: "A list item cannot appear in
both a map clause and a data-sharing attribute clause on the same
construct.
* OpenMP 5.0 [2.19.7.1, Restrictions]: "A list item cannot appear in
both a map clause and a data-sharing attribute clause on the same
construct unless the construct is a combined construct."
This patch removes this restriction in the case of combined constructs
and OpenMP 5.0, and it updates Sema not to capture a scalar by copy in
the target region when `firstprivate` and `map` appear for that scalar
on a combined target construct.
This patch also adds a fixme to a test that now reveals that a
diagnostic about loop iteration variables is dropped in the case of
OpenMP 5.0. That bug exists regardless of this patch's changes.
Reviewed By: ABataev, jdoerfert, hfinkel, kkwli0
Differential Revision: https://reviews.llvm.org/D65835
llvm-svn: 369619
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