[Frontend][OpenMP] Allow implicit clauses to fail to apply (#100460)

The `linear(x)` clause implies `firstprivate(x)` on the compound
construct if `x` is not an induction variable. With more construct
combinations coming in OpenMP 6.0, the `firstprivate` clause may not be
possible to apply, e.g. in "masked simd".
An additional benefit from this change is that it allows treating leaf
constructs as combined constructs with a single constituent. Otherwise,
a `linear` clause on a lone `simd` construct could imply a
`firstprivate` clause that can't be applied.

0 files changed, 0 insertions, 0 deletions