[PATCH] D74941: [OpenMP] `omp begin/end declare variant` - part 1, parsing

[Johannes Doerfert via Phabricator via cfe-commits]

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

This is the first part extracted from D71179 <https://reviews.llvm.org/D71179> and cleaned up.

This patch provides parsing support for `omp begin/end declare variant`,
as defined in OpenMP technical report 8 (TR8).

A major purpose of this patch is to provide proper math.h/cmath support
for OpenMP target offloading. See PR42061, PR42798, PR42799.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D74941

Files:
  clang/include/clang/AST/OpenMPClause.h
  clang/include/clang/Basic/DiagnosticParseKinds.td
  clang/include/clang/Parse/Parser.h
  clang/lib/AST/OpenMPClause.cpp
  clang/lib/Basic/OpenMPKinds.cpp
  clang/lib/CodeGen/CGOpenMPRuntime.cpp
  clang/lib/CodeGen/CGOpenMPRuntimeNVPTX.cpp
  clang/lib/Parse/ParseOpenMP.cpp
  clang/lib/Sema/SemaOpenMP.cpp
  llvm/include/llvm/Frontend/OpenMP/OMPKinds.def

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