llvm-project

da6db6b9 - [OpenMP] Support 'taskgraph' semantics via new libomp API entry points

[OpenMP] Support 'taskgraph' semantics via new libomp API entry points This patch supports the OpenMP 6.0 'taskgraph' directive via several new API entry points for libomp. New entry points are used for several reasons. The first reason is to pass extra information from the compiler relevant to the taskgraph-recording case -- e.g. the __kmpc_taskgraph_task entry point has extra arguments relating to shared data. The second reason is to reduce the potential overhead of the taskgraph implementation on the rest of the runtime. A third intention is to capture OpenMP semantics at a slightly higher level: in particular when we come to add offload target tasks to this implementation, those will also use new API entry points to hopefully allow dependencies to be handled entirely on the GPU, rather than by being wrapped in a host task. Pull Request: https://github.com/llvm/llvm-project/pull/194051