[all-commits] [llvm/llvm-project] 523d7b: [flang][driver] Add `-fdebug-dump-parsing-log`

[Andrzej Warzyński via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 523d7bc6f427f9ae32e54dbf1764826cfb269d21
      https://github.com/llvm/llvm-project/commit/523d7bc6f427f9ae32e54dbf1764826cfb269d21
  Author: Andrzej Warzynski <andrzej.warzynski at arm.com>
  Date:   2021-03-10 (Wed, 10 Mar 2021)

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

  Log Message:
  -----------
  [flang][driver] Add `-fdebug-dump-parsing-log`

This patch 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 facilitate tweaking the configuration of the frontend based on the
action being requested, `setUpFrontendBasedOnAction` is introduced in
CompilerInvocation.cpp.

Differential Revision: https://reviews.llvm.org/D97457