[PATCH] D106154: [WIP][AbstractAttributor] Fold __kmpc_parallel_level if possible

[Shilei Tian via Phabricator via llvm-commits]

tianshilei1992 created this revision.
tianshilei1992 added reviewers: jdoerfert, JonChesterfield, ggeorgakoudis, jhuber6.
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tianshilei1992 requested review of this revision.
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Similar to D105787 <https://reviews.llvm.org/D105787>, this patch tries to fold `__kmpc_parallel_level` if possible.
Note that `__kmpc_parallel_level` doesn't take activeness into consideration,
based on current `deviceRTLs`, its return value can be such as 0, 1, 2, instead
of 0, 129, 130, etc. that also indicate activeness.

TODOs:

- Important parts are still missing when merging parallel levels from caller.
- Test is still missing.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106154

Files:
  llvm/lib/Transforms/IPO/OpenMPOpt.cpp

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