[llvm-branch-commits] [OpenMP] Runtime support for graph_id and graph_reset clauses (PR #216325)

[Julian Brown via llvm-branch-commits]

https://github.com/jtb20 created https://github.com/llvm/llvm-project/pull/216325

This patch adds the runtime support for graph_id and graph_reset
functionality, including freeing of old taskgraph records.

Lazy expiration of taskgraphs is partially implemented here, but won't be
wired up fully until concurrent/nowait taskgraph execution is implemented.