[PATCH] D151088: [flang][hlfir] Separate -emit-fir and -emit-hlfir

[Tom Eccles via Phabricator via cfe-commits]

tblah created this revision.
tblah added reviewers: awarzynski, vzakhari, jeanPerier, clementval.
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tblah requested review of this revision.
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In review for https://reviews.llvm.org/D146278, @vzakhari asked to
separate -emit-fir and -emit-hlfir. This will allow FIR to be easily
outputted after the HLFIR passes have been run.

The new semantics are as follows:

| Action      | -flang-experimental-hlfir? | Result                          |
| =========== | ========================== | =============================== |
| -emit-hlfir | N                          | Outputs HLFIR                   |
| -emit-hlfir | Y                          | Outputs HLFIR                   |
| -emit-fir   | N                          | Outputs FIR, using old lowering |
| -emit-fir   | Y                          | Outputs FIR, lowering via HLFIR |
|

A patch for bbc will follow.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151088

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/Driver/driver-help.f90
  flang/test/HLFIR/flang-experimental-hlfir-flag.f90

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