[clang][cli] Port PreprocessorOpts simple string based options to new option parsing system

Depends on D84671

Reviewed By: Bigcheese

Original patch by Daniel Grumberg.

Differential Revision: https://reviews.llvm.org/D84672

Author: jansvoboda11

clang/include/clang/Driver/Options.td

@@ -2615,7 +2615,8 @@ def image__base : Separate<["-"], "image_base">;
 def include_ : JoinedOrSeparate<["-", "--"], "include">, Group<clang_i_Group>, EnumName<"include">,
     MetaVarName<"<file>">, HelpText<"Include file before parsing">, Flags<[CC1Option]>;
 def include_pch : Separate<["-"], "include-pch">, Group<clang_i_Group>, Flags<[CC1Option]>,
-  HelpText<"Include precompiled header file">, MetaVarName<"<file>">;
+  HelpText<"Include precompiled header file">, MetaVarName<"<file>">,
+  MarshallingInfoString<"PreprocessorOpts->ImplicitPCHInclude">;
 def relocatable_pch : Flag<["-", "--"], "relocatable-pch">, Flags<[CC1Option]>,
   HelpText<"Whether to build a relocatable precompiled header">,
   MarshallingInfoFlag<"FrontendOpts.RelocatablePCH">;
@@ -4857,7 +4858,8 @@ def foverride_record_layout_EQ : Joined<["-"], "foverride-record-layout=">,
   HelpText<"Override record layouts with those in the given file">;
 def pch_through_header_EQ : Joined<["-"], "pch-through-header=">,
   HelpText<"Stop PCH generation after including this file.  When using a PCH, "
-           "skip tokens until after this file is included.">;
+           "skip tokens until after this file is included.">,
+  MarshallingInfoString<"PreprocessorOpts->PCHThroughHeader">;
 def pch_through_hdrstop_create : Flag<["-"], "pch-through-hdrstop-create">,
   HelpText<"When creating a PCH, stop PCH generation after #pragma hdrstop.">,
   MarshallingInfoFlag<"PreprocessorOpts->PCHWithHdrStopCreate">;
@@ -4904,7 +4906,9 @@ def fconstant_string_class : Separate<["-"], "fconstant-string-class">,
   HelpText<"Specify the class to use for constant Objective-C string objects.">,
   MarshallingInfoString<"LangOpts->ObjCConstantStringClass">;
 def fobjc_arc_cxxlib_EQ : Joined<["-"], "fobjc-arc-cxxlib=">,
-  HelpText<"Objective-C++ Automatic Reference Counting standard library kind">, Values<"libc++,libstdc++,none">;
+  HelpText<"Objective-C++ Automatic Reference Counting standard library kind">, Values<"libc++,libstdc++,none">,
+  NormalizedValues<["ARCXX_libcxx", "ARCXX_libstdcxx", "ARCXX_nolib"]>,
+  MarshallingInfoString<"PreprocessorOpts->ObjCXXARCStandardLibrary", "ARCXX_nolib">, AutoNormalizeEnum;
 def fobjc_runtime_has_weak : Flag<["-"], "fobjc-runtime-has-weak">,
   HelpText<"The target Objective-C runtime supports ARC weak operations">;
 def fobjc_dispatch_method_EQ : Joined<["-"], "fobjc-dispatch-method=">,

clang/lib/Frontend/CompilerInvocation.cpp

@@ -3115,11 +3115,8 @@ static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
                                   DiagnosticsEngine &Diags,
                                   frontend::ActionKind Action) {
-  Opts.ImplicitPCHInclude = std::string(Args.getLastArgValue(OPT_include_pch));
   Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) ||
                         Args.hasArg(OPT_pch_through_hdrstop_use);
-  Opts.PCHThroughHeader =
-      std::string(Args.getLastArgValue(OPT_pch_through_header_EQ));
   Opts.AllowPCHWithCompilerErrors =
       Args.hasArg(OPT_fallow_pch_with_errors, OPT_fallow_pcm_with_errors);
 
@@ -3187,19 +3184,6 @@ static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
     Opts.addRemappedFile(Split.first, Split.second);
   }
 
-  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
-    StringRef Name = A->getValue();
-    unsigned Library = llvm::StringSwitch<unsigned>(Name)
-      .Case("libc++", ARCXX_libcxx)
-      .Case("libstdc++", ARCXX_libstdcxx)
-      .Case("none", ARCXX_nolib)
-      .Default(~0U);
-    if (Library == ~0U)
-      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
-    else
-      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
-  }
-
   // Always avoid lexing editor placeholders when we're just running the
   // preprocessor as we never want to emit the
   // "editor placeholder in source file" error in PP only mode.