Revert "[Flang] Generate documentation for compiler flags"

This reverts commit 396e944d82.

Failing bot: https://lab.llvm.org/buildbot/#/builders/89/builds/30096

clang/utils/TableGen/ClangOptionDocEmitter.cpp

@@ -168,29 +168,6 @@ bool hasFlag(const Record *OptionOrGroup, StringRef OptionFlag) {
   return false;
 }
 
-bool isIncluded(const Record *OptionOrGroup, const Record *DocInfo) {
-  assert(DocInfo->getValue("IncludedFlags") && "Missing includeFlags");
-  for (StringRef Inclusion : DocInfo->getValueAsListOfStrings("IncludedFlags"))
-    if (hasFlag(OptionOrGroup, Inclusion))
-      return true;
-  return false;
-}
-
-bool isGroupIncluded(const DocumentedGroup &Group, const Record *DocInfo) {
-  if (isIncluded(Group.Group, DocInfo))
-    return true;
-  for (auto &O : Group.Options)
-    if (isIncluded(O.Option, DocInfo))
-      return true;
-  for (auto &G : Group.Groups) {
-    if (isIncluded(G.Group, DocInfo))
-      return true;
-    if (isGroupIncluded(G, DocInfo))
-      return true;
-  }
-  return false;
-}
-
 bool isExcluded(const Record *OptionOrGroup, const Record *DocInfo) {
   // FIXME: Provide a flag to specify the set of exclusions.
   for (StringRef Exclusion : DocInfo->getValueAsListOfStrings("ExcludedFlags"))
@@ -327,8 +304,6 @@ void emitOption(const DocumentedOption &Option, const Record *DocInfo,
                 raw_ostream &OS) {
   if (isExcluded(Option.Option, DocInfo))
     return;
-  if (DocInfo->getValue("IncludedFlags") && !isIncluded(Option.Option, DocInfo))
-    return;
   if (Option.Option->getValueAsDef("Kind")->getName() == "KIND_UNKNOWN" ||
       Option.Option->getValueAsDef("Kind")->getName() == "KIND_INPUT")
     return;
@@ -404,9 +379,6 @@ void emitGroup(int Depth, const DocumentedGroup &Group, const Record *DocInfo,
   if (isExcluded(Group.Group, DocInfo))
     return;
 
-  if (DocInfo->getValue("IncludedFlags") && !isGroupIncluded(Group, DocInfo))
-    return;
-
   emitHeading(Depth,
               getRSTStringWithTextFallback(Group.Group, "DocName", "Name"), OS);
 

flang/docs/CMakeLists.txt

@@ -91,16 +91,6 @@ if (LLVM_ENABLE_DOXYGEN)
 endif()
 endif()
 
-function (gen_rst_file_from_td output_file td_option source docs_target)
-  if (NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${source}")
-    message(FATAL_ERROR "Cannot find source file: ${source} in ${CMAKE_CURRENT_SOURCE_DIR}")
-  endif()
-  get_filename_component(TABLEGEN_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${source}" DIRECTORY)
-  list(APPEND LLVM_TABLEGEN_FLAGS "-I${TABLEGEN_INCLUDE_DIR}")
-  clang_tablegen(Source/${output_file} ${td_option} SOURCE ${source} TARGET "gen-${output_file}")
-  add_dependencies(${docs_target} "gen-${output_file}")
-endfunction()
-
 if (LLVM_ENABLE_SPHINX)
   include(AddSphinxTarget)
   if (SPHINX_FOUND)
@@ -124,7 +114,6 @@ if (LLVM_ENABLE_SPHINX)
           COMMAND "${Python3_EXECUTABLE}"
           ARGS ${CMAKE_CURRENT_BINARY_DIR}/Source/FIR/CreateFIRLangRef.py)
 
-      gen_rst_file_from_td(FlangCommandLineReference.rst -gen-opt-docs ../include/flang/FlangOptionsDocs.td docs-flang-html)
     endif()
     if (${SPHINX_OUTPUT_MAN})
       add_sphinx_target(man flang)

flang/docs/index.md

@@ -45,7 +45,6 @@ on how to get in touch with us and to learn more about the current status.
    DoConcurrent
    Extensions
    FIRLangRef
-   FlangCommandLineReference
    FlangDriver
    FortranIR
    FortranLLVMTestSuite

flang/include/flang/FlangOptionsDocs.td

@@ -1,35 +0,0 @@
-//==--- FlangOptionDocs.td - Option documentation -------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-def GlobalDocumentation {
-  code Intro =[{..
-  -------------------------------------------------------------------
-  NOTE: This file is automatically generated by running clang-tblgen
-  -gen-opt-docs. Do not edit this file by hand!!
-  -------------------------------------------------------------------
-
-=====================================
-Flang command line argument reference
-=====================================
-.. contents::
-   :local:
-
-Introduction
-============
-
-}];
-
-  string Program = "flang";
-
-  list<string> ExcludedFlags = [];
-  list<string> IncludedFlags = ["FlangOption"];
-
-}
-
-
-include "../../../clang/include/clang/Driver/Options.td"