diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -4527,6 +4527,8 @@
   HelpText<"Dump the parse tree (skips the semantic checks)">,
   DocBrief<[{Run the Parser and then output the parse tree. Semantic
 checks are disabled.}]>;
+def fdebug_dump_all : Flag<["-"], "fdebug-dump-all">, Group<Action_Group>,
+  HelpText<"Dump symbols and the parse tree after the semantic checks">;
 def fdebug_dump_provenance : Flag<["-"], "fdebug-dump-provenance">, Group<Action_Group>,
   HelpText<"Dump provenance">;
 def fdebug_dump_parsing_log : Flag<["-"], "fdebug-dump-parsing-log">, Group<Action_Group>,
diff --git a/flang/include/flang/Frontend/FrontendActions.h b/flang/include/flang/Frontend/FrontendActions.h
--- a/flang/include/flang/Frontend/FrontendActions.h
+++ b/flang/include/flang/Frontend/FrontendActions.h
@@ -116,6 +116,10 @@
   void ExecuteAction() override;
 };
 
+class DebugDumpAllAction : public PrescanAndSemaAction {
+  void ExecuteAction() override;
+};
+
 class DebugPreFIRTreeAction : public PrescanAndSemaAction {
   void ExecuteAction() override;
 };
diff --git a/flang/include/flang/Frontend/FrontendOptions.h b/flang/include/flang/Frontend/FrontendOptions.h
--- a/flang/include/flang/Frontend/FrontendOptions.h
+++ b/flang/include/flang/Frontend/FrontendOptions.h
@@ -51,6 +51,9 @@
   /// Parse, run semantics and then output the parse tree
   DebugDumpParseTree,
 
+  /// Parse, run semantics and then output the parse tree symbols
+  DebugDumpAll,
+
   /// Parse and then output the parse tree, skip the semantic checks
   DebugDumpParseTreeNoSema,
 
diff --git a/flang/lib/Frontend/CompilerInvocation.cpp b/flang/lib/Frontend/CompilerInvocation.cpp
--- a/flang/lib/Frontend/CompilerInvocation.cpp
+++ b/flang/lib/Frontend/CompilerInvocation.cpp
@@ -141,6 +141,9 @@
     case clang::driver::options::OPT_fdebug_dump_parse_tree:
       opts.programAction_ = DebugDumpParseTree;
       break;
+    case clang::driver::options::OPT_fdebug_dump_all:
+      opts.programAction_ = DebugDumpAll;
+      break;
     case clang::driver::options::OPT_fdebug_dump_parse_tree_no_sema:
       opts.programAction_ = DebugDumpParseTreeNoSema;
       break;
diff --git a/flang/lib/Frontend/FrontendActions.cpp b/flang/lib/Frontend/FrontendActions.cpp
--- a/flang/lib/Frontend/FrontendActions.cpp
+++ b/flang/lib/Frontend/FrontendActions.cpp
@@ -305,6 +305,42 @@
   semantics.DumpSymbols(llvm::outs());
 }
 
+void DebugDumpAllAction::ExecuteAction() {
+  CompilerInstance &ci = this->instance();
+
+  // Dump parse tree
+  auto &parseTree{instance().parsing().parseTree()};
+  Fortran::parser::AnalyzedObjectsAsFortran asFortran =
+      Fortran::frontend::getBasicAsFortran();
+  llvm::outs() << "========================";
+  llvm::outs() << " Flang: parse tree dump ";
+  llvm::outs() << "========================\n";
+  Fortran::parser::DumpTree(llvm::outs(), parseTree, &asFortran);
+
+  auto &semantics = this->semantics();
+  auto tables{Fortran::semantics::BuildRuntimeDerivedTypeTables(
+      instance().invocation().semanticsContext())};
+  // The runtime derived type information table builder may find and report
+  // semantic errors. So it is important that we report them _after_
+  // BuildRuntimeDerivedTypeTables is run.
+  reportFatalSemanticErrors(
+      semantics, this->instance().diagnostics(), GetCurrentFileOrBufferName());
+
+  if (!tables.schemata) {
+    unsigned DiagID =
+        ci.diagnostics().getCustomDiagID(clang::DiagnosticsEngine::Error,
+            "could not find module file for __fortran_type_info");
+    ci.diagnostics().Report(DiagID);
+    llvm::errs() << "\n";
+  }
+
+  // Dump symbols
+  llvm::outs() << "=====================";
+  llvm::outs() << " Flang: symbols dump ";
+  llvm::outs() << "=====================\n";
+  semantics.DumpSymbols(llvm::outs());
+}
+
 void DebugDumpParseTreeNoSemaAction::ExecuteAction() {
   auto &parseTree{instance().parsing().parseTree()};
   Fortran::parser::AnalyzedObjectsAsFortran asFortran =
diff --git a/flang/lib/FrontendTool/ExecuteCompilerInvocation.cpp b/flang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
--- a/flang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ b/flang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -55,6 +55,9 @@
   case DebugDumpParseTreeNoSema:
     return std::make_unique<DebugDumpParseTreeNoSemaAction>();
     break;
+  case DebugDumpAll:
+    return std::make_unique<DebugDumpAllAction>();
+    break;
   case DebugDumpProvenance:
     return std::make_unique<DebugDumpProvenanceAction>();
     break;
diff --git a/flang/test/Driver/driver-help.f90 b/flang/test/Driver/driver-help.f90
--- a/flang/test/Driver/driver-help.f90
+++ b/flang/test/Driver/driver-help.f90
@@ -69,6 +69,7 @@
 ! HELP-FC1-NEXT: -falternative-parameter-statement
 ! HELP-FC1-NEXT: Enable the old style PARAMETER statement
 ! HELP-FC1-NEXT: -fbackslash            Specify that backslash in string introduces an escape character
+! HELP-FC1-NEXT: -fdebug-dump-all       Dump symbols and the parse tree after the semantic checks
 ! HELP-FC1-NEXT: -fdebug-dump-parse-tree-no-sema
 ! HELP-FC1-NEXT:                        Dump the parse tree (skips the semantic checks)
 ! HELP-FC1-NEXT: -fdebug-dump-parse-tree Dump the parse tree