[PATCH] D147324: [OpenMP][MLIR][Flang][bbc][Driver] Add OpenMP RTL Flags to Flang and generate omp.FlagsAttr from them

[Andrew Gozillon via Phabricator via cfe-commits]

agozillon created this revision.
Herald added subscribers: sunshaoce, bzcheeseman, rriddle, guansong, yaxunl.
Herald added a reviewer: sscalpone.
Herald added a reviewer: awarzynski.
Herald added a reviewer: kiranchandramohan.
Herald added projects: Flang, All.
agozillon requested review of this revision.
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This patch ports OpenMP RTL flags from the shared Clang compiler
options to Flang. As well as adding a limited subset to bbc.

This patch enables the flags below (and any equals or inverse variants)
for Flang that exist in Clang:

-fopenmp-target-debug
-fopenmp-assume-threads-oversubscription
-fopenmp-assume-teams-oversubscription
-fopenmp-assume-no-nested-parallelism
-fopenmp-assume-no-thread-state

For the bbc tool it only utilises the primary variants to minimize
additional complexity in the tool.

The patch also provides FlagAttr generation from these flags. Which
will be lowered to LLVM-IR in a subsequent patch.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147324

Files:
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Flang.cpp
  flang/include/flang/Frontend/LangOptions.def
  flang/include/flang/Tools/CrossToolHelpers.h
  flang/lib/Frontend/CompilerInvocation.cpp
  flang/lib/Frontend/FrontendActions.cpp
  flang/test/Driver/driver-help.f90
  flang/test/Driver/omp-frontend-forwarding.f90
  flang/test/Lower/OpenMP/rtl-flags.f90
  flang/tools/bbc/bbc.cpp

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