[PATCH] D97457: [flang][driver] Add `-fdebug-dump-parsing-log`

[Andrzej Warzynski via Phabricator via cfe-commits]

awarzynski created this revision.
Herald added a reviewer: sscalpone.
Herald added subscribers: jansvoboda11, dang.
awarzynski requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Adds `-fdebug-dump-parsing-log` in the new driver. This option is
semantically identical to `-fdebug-instrumented-parse` in `f18` (the
former is added as an alias in `f18`).

As dumping the parsing log makes only sense for instrumented parses, we
set Fortran::parser::Options::instrumentedParse to `True` when
`-fdebug-dump-parsing-log` is used. This is consistent with `f18`. To
facilate tweaking the frontend based on the action being run,
`setUpFrontendBasedOnAction` in CompilerInvocation.cpp is introduced.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D97457

Files:
  clang/include/clang/Driver/Options.td
  flang/include/flang/Frontend/FrontendActions.h
  flang/include/flang/Frontend/FrontendOptions.h
  flang/lib/Frontend/CompilerInvocation.cpp
  flang/lib/Frontend/FrontendActions.cpp
  flang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
  flang/test/Flang-Driver/debug-parsing-log.f90
  flang/test/Flang-Driver/driver-help.f90
  flang/tools/f18/f18.cpp

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