Follow up from D92955 and D83636. This patch makes the base cpp files
OMP.cpp and ACC.cpp normal files and they now include the XXX.inc file
generated by tablegen. This reduces the number of file generated by the
DirectiveEmitter backend and makes it closer to the proposal in D83636.
Reviewed By: Meinersbur
Differential Revision: https://reviews.llvm.org/D93560
Validity check introduce in D90241 are a bit too restrict and this patch propose to losen
them a bit. The duplicate clauses is now check only between the three allowed lists and between the
requiredClauses and allowedClauses lists. This allows to enable some check where a clause can be
required but also appear only once on the directive. We found these kind of restriction useful
on the set directive in OpenACC for example.
Reviewed By: kiranchandramohan
Differential Revision: https://reviews.llvm.org/D90770
Check for duplicate clauses associated with directive. Clauses can appear only once
in the 4 lists associated with each directive (allowedClauses, allowedOnceClauses,
allowedExclusiveClauses, requiredClauses). Duplicates were already present (removed with this
patch) or were introduce in new patches by mistake (D89861).
Reviewed By: kiranchandramohan
Differential Revision: https://reviews.llvm.org/D90241