52 Commits

Author	SHA1	Message	Date
Johannes Doerfert	e28936f613	[OpenMP][Opt] Annotate known runtime functions and deduplicate more ... This adds ~27 more runtime calls to the OpenMPKinds.def file, all with attributes. We deduplicate 16 of those automatically in function = thread scope. And we annotate all of them automatically during the OpenMPOpt discovery step. A test with all omp_XXXX runtime calls to track annotation coverage is included. Reviewed By: JonChesterfield Differential Revision: https://reviews.llvm.org/D69984	2020-02-08 18:35:39 -06:00
Johannes Doerfert	9548b74a83	[OpenMP] Introduce the OpenMPOpt transformation pass ... The OpenMPOpt pass is a CGSCC pass in which OpenMP specific optimizations can reside. The OpenMPOpt pass uses the OpenMPKinds.def file to identify runtime calls and their uses. This allows targeted transformations and eases their implementation. This initial patch deduplicates `__kmpc_global_thread_num` and `omp_get_thread_num` calls. We can also identify arguments that are equivalent to such a call result and use it instead. Later we can determine "gtid" arguments based on the use in kernel functions etc. Reviewed By: JonChesterfield Differential Revision: https://reviews.llvm.org/D69930	2020-02-08 14:47:03 -06:00