[PATCH] D93401: [flang][driver] Add support for `-D`, `-U`

[Faris via Phabricator via cfe-commits]

FarisRehman created this revision.
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FarisRehman requested review of this revision.
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Add support for options -D and -U in the Flang driver along with a regression test for them.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D93401

Files:
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Flang.cpp
  flang/include/flang/Frontend/CompilerInstance.h
  flang/include/flang/Frontend/CompilerInvocation.h
  flang/include/flang/Frontend/PreprocessorOptions.h
  flang/lib/Frontend/CompilerInstance.cpp
  flang/lib/Frontend/CompilerInvocation.cpp
  flang/test/Flang-Driver/driver-help-hidden.f90
  flang/test/Flang-Driver/driver-help.f90
  flang/test/Flang-Driver/macro.f90

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