[PATCH] D69785: [OpenMP] Introduce the OpenMP-IR-Builder

[Johannes Doerfert via Phabricator via llvm-commits]

jdoerfert created this revision.
jdoerfert added reviewers: kiranchandramohan, ABataev, RaviNarayanaswamy, gtbercea, grokos, sdmitriev, JonChesterfield, hfinkel, fghanim.
Herald added subscribers: cfe-commits, jfb, guansong, bollu, hiraditya, mgorny.
Herald added projects: clang, LLVM.

This is the initial patch for the OpenMP-IR-Builder, as discussed on the
mailing list ([1] and later) and at the US Dev Meeting'19.

The design is similar to D61953 <https://reviews.llvm.org/D61953> but:

- placed in `llvm/lib/IR/` next to IRBuilder, for lack of a better location.
- in a non-WIP status, with proper documentation and working.
- using a OpenMPKinds.def file to manage lists of directives, runtime functions, types, ..., similar to the current Clang implementation.
- restricted to handle only (simple) barriers, to implement most `#pragma omp barrier` directives and most implicit barriers.
- properly hooked into Clang to be used if possible.
- compatible with the remaining code generation.

The plan is to have multiple people working on moving logic from Clang
here once the initial scaffolding (=this patch) landed.

[1] http://lists.flang-compiler.org/pipermail/flang-dev_lists.flang-compiler.org/2019-May/000197.html


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D69785

Files:
  clang/include/clang/Basic/OpenMPKinds.def
  clang/include/clang/Basic/OpenMPKinds.h
  clang/lib/Basic/OpenMPKinds.cpp
  clang/lib/CodeGen/CGOpenMPRuntime.cpp
  clang/lib/CodeGen/CodeGenModule.cpp
  clang/lib/CodeGen/CodeGenModule.h
  clang/test/OpenMP/for_firstprivate_codegen.cpp
  clang/test/OpenMP/for_linear_codegen.cpp
  clang/test/OpenMP/parallel_copyin_codegen.cpp
  clang/test/OpenMP/sections_codegen.cpp
  llvm/include/llvm/IR/OpenMPIRBuilder.h
  llvm/include/llvm/IR/OpenMPKinds.def
  llvm/lib/IR/CMakeLists.txt
  llvm/lib/IR/OpenMPIRBuilder.cpp

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