Merge pull request swiftlang#38245 from owenv/emit-frontend-tool-flags

Author: owenv

lib/FrontendTool/FrontendTool.cpp

@@ -1048,7 +1048,13 @@ static bool printSwiftVersion(const CompilerInvocation &Invocation) {
 
 static void printSingleFrontendOpt(llvm::opt::OptTable &table, options::ID id,
                                    llvm::raw_ostream &OS) {
-  if (table.getOption(id).hasFlag(options::FrontendOption)) {
+  if (table.getOption(id).hasFlag(options::FrontendOption) ||
+      table.getOption(id).hasFlag(options::AutolinkExtractOption) ||
+      table.getOption(id).hasFlag(options::ModuleWrapOption) ||
+      table.getOption(id).hasFlag(options::SwiftIndentOption) ||
+      table.getOption(id).hasFlag(options::SwiftAPIExtractOption) ||
+      table.getOption(id).hasFlag(options::SwiftSymbolGraphExtractOption) ||
+      table.getOption(id).hasFlag(options::SwiftAPIDigesterOption)) {
     auto name = StringRef(table.getOptionName(id));
     if (!name.empty()) {
       OS << "    \"" << name << "\",\n";

test/Frontend/emit-supported-features.swift

@@ -1,6 +1,7 @@
 // RUN: %target-swift-frontend -emit-supported-features %s | %FileCheck %s
 
 // CHECK: "SupportedArguments"
+// CHECK: "abi"
 // CHECK: "emit-module"
 // CHECK: "LastOption"
 // CHECK: "SupportedFeatures"