[clang][cli] Better defaults for MarshallingInfoString

Depends on D84018

Reviewed By: Bigcheese

Original patch by Daniel Grumberg.

Differential Revision: https://reviews.llvm.org/D84185

Author: jansvoboda11

clang/include/clang/Driver/Options.td

@@ -3933,7 +3933,7 @@ def target_feature : Separate<["-"], "target-feature">,
 def triple : Separate<["-"], "triple">,
   HelpText<"Specify target triple (e.g. i686-apple-darwin9)">,
   MarshallingInfoString<"TargetOpts->Triple", "llvm::Triple::normalize(llvm::sys::getDefaultTargetTriple())">,
-  AlwaysEmit, Normalizer<"normalizeTriple">, DenormalizeString;
+  AlwaysEmit, Normalizer<"normalizeTriple">;
 def target_abi : Separate<["-"], "target-abi">,
   HelpText<"Target a particular ABI type">;
 def target_sdk_version_EQ : Joined<["-"], "target-sdk-version=">,
@@ -3998,7 +3998,8 @@ def analyzer_viz_egraph_graphviz : Flag<["-"], "analyzer-viz-egraph-graphviz">,
   HelpText<"Display exploded graph using GraphViz">,
   MarshallingInfoFlag<"AnalyzerOpts->visualizeExplodedGraphWithGraphViz">;
 def analyzer_dump_egraph : Separate<["-"], "analyzer-dump-egraph">,
-  HelpText<"Dump exploded graph to the specified file">;
+  HelpText<"Dump exploded graph to the specified file">,
+  MarshallingInfoString<"AnalyzerOpts->DumpExplodedGraphTo">;
 def analyzer_dump_egraph_EQ : Joined<["-"], "analyzer-dump-egraph=">, Alias<analyzer_dump_egraph>;
 
 def analyzer_inline_max_stack_depth : Separate<["-"], "analyzer-inline-max-stack-depth">,

clang/lib/Frontend/CompilerInvocation.cpp

@@ -272,6 +272,15 @@ static void denormalizeSimpleEnumJoined(SmallVectorImpl<const char *> &Args,
                      "the tablegen option description");
 }
 
+static Optional<std::string> normalizeString(OptSpecifier Opt, int TableIndex,
+                                             const ArgList &Args,
+                                             DiagnosticsEngine &Diags) {
+  auto *Arg = Args.getLastArg(Opt);
+  if (!Arg)
+    return None;
+  return std::string(Arg->getValue());
+}
+
 static void denormalizeString(SmallVectorImpl<const char *> &Args,
                               const char *Spelling,
                               CompilerInvocation::StringAllocator SA,
@@ -498,8 +507,6 @@ static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
         .Case("false", false)
         .Default(false);
 
-  Opts.DumpExplodedGraphTo =
-      std::string(Args.getLastArgValue(OPT_analyzer_dump_egraph));
   Opts.AnalyzeSpecificFunction =
       std::string(Args.getLastArgValue(OPT_analyze_function));
   Opts.maxBlockVisitOnPath =

llvm/include/llvm/Option/OptParser.td

@@ -155,8 +155,11 @@ class MarshallingInfo<code keypath, code defaultvalue> {
   code DefaultValue = defaultvalue;
 }
 
-class MarshallingInfoString<code keypath, code defaultvalue>
-  : MarshallingInfo<keypath, defaultvalue> {}
+class MarshallingInfoString<code keypath, code defaultvalue="std::string()">
+  : MarshallingInfo<keypath, defaultvalue> {
+  code Normalizer = "normalizeString";
+  code Denormalizer = "denormalizeString";
+}
 
 class MarshallingInfoFlag<code keypath, code defaultvalue = "false">
   : MarshallingInfo<keypath, defaultvalue> {
@@ -189,7 +192,6 @@ class Normalizer<code normalizer> { code Normalizer = normalizer; }
 class Denormalizer<code denormalizer> { code Denormalizer = denormalizer; }
 class NormalizedValuesScope<code scope> { code NormalizedValuesScope = scope; }
 class NormalizedValues<list<code> definitions> { list<code> NormalizedValues = definitions; } 
-class DenormalizeString { code Denormalizer = "denormalizeString"; }
 class AutoNormalizeEnum {
   code Normalizer = "normalizeSimpleEnum";
   code Denormalizer = "denormalizeSimpleEnum";