[all-commits] [llvm/llvm-project] 329879: [utils][TableGen] Handle versions on clause/direct...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/users/kparzysz/spr/t08-versioned-spellings
  Home:   https://github.com/llvm/llvm-project
  Commit: 3298791d9baeff1137fcb74f151f87b2d2196816
      https://github.com/llvm/llvm-project/commit/3298791d9baeff1137fcb74f151f87b2d2196816
  Author: Krzysztof Parzyszek <Krzysztof.Parzyszek at amd.com>
  Date:   2025-06-05 (Thu, 05 Jun 2025)

  Changed paths:
    A llvm/include/llvm/Frontend/Directive/Spelling.h
    M llvm/include/llvm/TableGen/DirectiveEmitter.h
    M llvm/lib/Frontend/CMakeLists.txt
    A llvm/lib/Frontend/Directive/CMakeLists.txt
    A llvm/lib/Frontend/Directive/Spelling.cpp
    M llvm/lib/Frontend/OpenACC/CMakeLists.txt
    M llvm/lib/Frontend/OpenMP/CMakeLists.txt
    M llvm/test/TableGen/directive1.td
    M llvm/test/TableGen/directive2.td
    M llvm/utils/TableGen/Basic/DirectiveEmitter.cpp

  Log Message:
  -----------
  [utils][TableGen] Handle versions on clause/directive spellings

In "get<lang>DirectiveName(Kind, Version)", return the spelling that
corresponds to Version, and in "get<lang>DirectiveKindAndVersions(Name)"
return the pair {Kind, VersionRange}, where VersionRange contains the
minimum and the maximum versions that allow "Name" as a spelling.
This applies to clauses as well. In general it applies to classes that
have spellings (defined via TableGen class "Spelling").

Given a Kind and a Version, getting the corresponding spelling requires
a runtime search (which can fail in a general case). To avoid generating
the search function inline, a small additional component of llvm/Frontent
was added: LLVMFrontendDirective. The corresponding header file also
defines C++ classes "Spelling" and "VersionRange", which are used in
TableGen/DirectiveEmitter as well.

For background information see
https://discourse.llvm.org/t/rfc-alternative-spellings-of-openmp-directives/85507



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