diff --git a/lldb/.clang-format-ignore b/lldb/.clang-format-ignore
new file mode 100644
index 0000000000000..1b8515a9c2831
--- /dev/null
+++ b/lldb/.clang-format-ignore
@@ -0,0 +1,2 @@
+source/Plugins/Language/CPlusPlus/LanguageCPlusPlusProperties.td
+source/Plugins/Language/Swift/LanguageSwiftProperties.td
diff --git a/lldb/include/lldb/Core/DemangledNameInfo.h b/lldb/include/lldb/Core/DemangledNameInfo.h
index 4b5ba5e42b3b1..cda0cb6ff3dad 100644
--- a/lldb/include/lldb/Core/DemangledNameInfo.h
+++ b/lldb/include/lldb/Core/DemangledNameInfo.h
@@ -73,6 +73,11 @@ struct DemangledNameInfo {
   bool hasBasename() const {
     return BasenameRange.second > BasenameRange.first;
   }
+
+  /// Returns \c true if this object holds a valid arguments range.
+  bool hasArguments() const {
+    return ArgumentsRange.second > ArgumentsRange.first;
+  }
 };
 
 /// An OutputBuffer which keeps a record of where certain parts of a
diff --git a/lldb/include/lldb/Core/PluginManager.h b/lldb/include/lldb/Core/PluginManager.h
index c0213e3f8d3f6..0c988e5969538 100644
--- a/lldb/include/lldb/Core/PluginManager.h
+++ b/lldb/include/lldb/Core/PluginManager.h
@@ -610,6 +610,14 @@ class PluginManager {
   static bool CreateSettingForCPlusPlusLanguagePlugin(
       Debugger &debugger, const lldb::OptionValuePropertiesSP &properties_sp,
       llvm::StringRef description, bool is_global_property);
+
+  static lldb::OptionValuePropertiesSP
+  GetSettingForSwiftLanguagePlugin(Debugger &debugger,
+                                   llvm::StringRef setting_name);
+
+  static bool CreateSettingForSwiftLanguagePlugin(
+      Debugger &debugger, const lldb::OptionValuePropertiesSP &properties_sp,
+      llvm::StringRef description, bool is_global_property);
 };
 
 } // namespace lldb_private
diff --git a/lldb/source/Core/Mangled.cpp b/lldb/source/Core/Mangled.cpp
index 13d51a1b80bc9..954373c5280d1 100644
--- a/lldb/source/Core/Mangled.cpp
+++ b/lldb/source/Core/Mangled.cpp
@@ -148,6 +148,41 @@ void Mangled::SetValue(ConstString name) {
   }
 }
 
+// BEGIN SWIFT
+#ifdef LLDB_ENABLE_SWIFT
+static ConstString GetSwiftDemangledStr(ConstString m_mangled,
+                                        const SymbolContext *sc,
+                                        ConstString &m_demangled) {
+  const char *mangled_name = m_mangled.GetCString();
+  Log *log = GetLog(LLDBLog::Demangle);
+  LLDB_LOGF(log, "demangle swift: %s", mangled_name);
+  auto [demangled, info] = SwiftLanguageRuntime::TrackedDemangleSymbolAsString(
+      mangled_name, SwiftLanguageRuntime::eSimplified, sc);
+  info.PrefixRange.second =
+      std::min(info.BasenameRange.first, info.ArgumentsRange.first);
+  info.SuffixRange.first =
+      std::max(info.BasenameRange.second, info.ArgumentsRange.second);
+  info.SuffixRange.second = demangled.length();
+
+  // Don't cache the demangled name the function isn't available yet.
+  if (!sc || !sc->function) {
+    LLDB_LOGF(log, "demangle swift: %s -> \"%s\" (not cached)", mangled_name,
+              demangled.c_str());
+    return ConstString(demangled);
+  }
+  if (demangled.empty()) {
+    LLDB_LOGF(log, "demangle swift: %s -> error: failed to demangle",
+              mangled_name);
+  } else {
+    LLDB_LOGF(log, "demangle swift: %s -> \"%s\"", mangled_name,
+              demangled.c_str());
+    m_demangled.SetStringWithMangledCounterpart(demangled, m_mangled);
+  }
+  return m_demangled;
+}
+#endif // LLDB_ENABLE_SWIFT
+// END SWIFT
+
 // Local helpers for different demangling implementations.
 static char *GetMSVCDemangledStr(llvm::StringRef M) {
   char *demangled_cstr = llvm::microsoftDemangle(
@@ -349,28 +384,7 @@ ConstString Mangled::GetDemangledNameImpl(bool force, // BEGIN SWIFT
     // Demangling a swift name requires the swift compiler. This is
     // explicitly unsupported on llvm.org.
 #ifdef LLDB_ENABLE_SWIFT
-  {
-    const char *mangled_name = m_mangled.GetCString();
-    Log *log = GetLog(LLDBLog::Demangle);
-    LLDB_LOGF(log, "demangle swift: %s", mangled_name);
-    std::string demangled(SwiftLanguageRuntime::DemangleSymbolAsString(
-        mangled_name, SwiftLanguageRuntime::eTypeName, sc));
-    // Don't cache the demangled name the function isn't available yet.
-    if (!sc || !sc->function) {
-      LLDB_LOGF(log, "demangle swift: %s -> \"%s\" (not cached)", mangled_name,
-                demangled.c_str());
-      return ConstString(demangled);
-    }
-    if (demangled.empty()) {
-      LLDB_LOGF(log, "demangle swift: %s -> error: failed to demangle",
-                mangled_name);
-    } else {
-      LLDB_LOGF(log, "demangle swift: %s -> \"%s\"", mangled_name,
-                demangled.c_str());
-      m_demangled.SetStringWithMangledCounterpart(demangled, m_mangled);
-    }
-    return m_demangled;
-  }
+    return GetSwiftDemangledStr(m_mangled, sc, m_demangled);
 #endif // LLDB_ENABLE_SWIFT
   break;
   case eManglingSchemeNone:
diff --git a/lldb/source/Core/PluginManager.cpp b/lldb/source/Core/PluginManager.cpp
index c7ef83d82d6c7..8a19684d63f28 100644
--- a/lldb/source/Core/PluginManager.cpp
+++ b/lldb/source/Core/PluginManager.cpp
@@ -1766,6 +1766,7 @@ static constexpr llvm::StringLiteral kJITLoaderPluginName("jit-loader");
 static constexpr llvm::StringLiteral
     kStructuredDataPluginName("structured-data");
 static constexpr llvm::StringLiteral kCPlusPlusLanguagePlugin("cplusplus");
+static constexpr llvm::StringLiteral kSwiftLanguagePlugin("swift");
 
 lldb::OptionValuePropertiesSP
 PluginManager::GetSettingForDynamicLoaderPlugin(Debugger &debugger,
@@ -1937,3 +1938,17 @@ bool PluginManager::CreateSettingForCPlusPlusLanguagePlugin(
                                 "Settings for CPlusPlus language plug-ins",
                                 properties_sp, description, is_global_property);
 }
+
+lldb::OptionValuePropertiesSP
+PluginManager::GetSettingForSwiftLanguagePlugin(Debugger &debugger,
+                                                llvm::StringRef setting_name) {
+  return GetSettingForPlugin(debugger, setting_name, kSwiftLanguagePlugin);
+}
+
+bool PluginManager::CreateSettingForSwiftLanguagePlugin(
+    Debugger &debugger, const lldb::OptionValuePropertiesSP &properties_sp,
+    llvm::StringRef description, bool is_global_property) {
+  return CreateSettingForPlugin(debugger, kSwiftLanguagePlugin,
+                                "Settings for Swift language plug-ins",
+                                properties_sp, description, is_global_property);
+}
\ No newline at end of file
diff --git a/lldb/source/Plugins/Language/Swift/CMakeLists.txt b/lldb/source/Plugins/Language/Swift/CMakeLists.txt
index 78cc8db0e8811..ae26f05d07c10 100644
--- a/lldb/source/Plugins/Language/Swift/CMakeLists.txt
+++ b/lldb/source/Plugins/Language/Swift/CMakeLists.txt
@@ -1,3 +1,11 @@
+lldb_tablegen(LanguageSwiftProperties.inc -gen-lldb-property-defs
+  SOURCE LanguageSwiftProperties.td
+  TARGET LLDBPluginLanguageSwiftPropertiesGen)
+
+lldb_tablegen(LanguageSwiftPropertiesEnum.inc -gen-lldb-property-enum-defs
+  SOURCE LanguageSwiftProperties.td
+  TARGET LLDBPluginLanguageSwiftPropertiesEnumGen)
+
 set(LLVM_NO_RTTI 1)
 
 add_lldb_library(lldbPluginSwiftLanguage PLUGIN
@@ -36,3 +44,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL Clang AND NOT SWIFT_COMPILER_MSVC_LIKE)
   target_compile_options(lldbPluginSwiftLanguage PRIVATE
     -Wno-dollar-in-identifier-extension)
 endif()
+
+add_dependencies(lldbPluginSwiftLanguage
+  LLDBPluginLanguageSwiftPropertiesGen
+  LLDBPluginLanguageSwiftPropertiesEnumGen)
\ No newline at end of file
diff --git a/lldb/source/Plugins/Language/Swift/LanguageSwiftProperties.td b/lldb/source/Plugins/Language/Swift/LanguageSwiftProperties.td
new file mode 100644
index 0000000000000..b863e32b52d89
--- /dev/null
+++ b/lldb/source/Plugins/Language/Swift/LanguageSwiftProperties.td
@@ -0,0 +1,8 @@
+include "../../../../include/lldb/Core/PropertiesBase.td"
+
+let Definition = "language_swift" in {
+  def FunctionNameFormat: Property<"function-name-format", "FormatEntity">,
+    Global,
+    DefaultStringValue<"${function.prefix}${ansi.fg.yellow}${function.basename}${ansi.normal}${function.formatted-arguments}${function.suffix}">,
+    Desc<"Swift specific frame format string to use when displaying stack frame information for threads.">;
+}
\ No newline at end of file
diff --git a/lldb/source/Plugins/Language/Swift/SwiftLanguage.cpp b/lldb/source/Plugins/Language/Swift/SwiftLanguage.cpp
index a4e34603f474c..12efed2b5be5c 100644
--- a/lldb/source/Plugins/Language/Swift/SwiftLanguage.cpp
+++ b/lldb/source/Plugins/Language/Swift/SwiftLanguage.cpp
@@ -68,7 +68,7 @@ void SwiftLanguage::Initialize() {
   static ConstString g_SwiftStringStorageClass("_TtCs15__StringStorage");
   static ConstString g_NSArrayClass1("_TtCs22__SwiftDeferredNSArray");
   PluginManager::RegisterPlugin(GetPluginNameStatic(), "Swift Language",
-                                CreateInstance);
+                                CreateInstance, &DebuggerInitialize);
 
   lldb_private::formatters::NSString_Additionals::GetAdditionalSummaries()
       .emplace(
@@ -1895,6 +1895,220 @@ SwiftLanguage::GetDemangledFunctionNameWithoutArguments(Mangled mangled) const {
   return mangled_name;
 }
 
+static std::optional<llvm::StringRef>
+GetDemangledBasename(const SymbolContext &sc) {
+  Mangled mangled = sc.GetPossiblyInlinedFunctionName();
+  if (!mangled)
+    return std::nullopt;
+
+  auto demangled_name = mangled.GetDemangledName().GetStringRef();
+  if (demangled_name.empty())
+    return std::nullopt;
+
+  const std::optional<DemangledNameInfo> &info = mangled.GetDemangledInfo();
+  if (!info)
+    return std::nullopt;
+
+  // Function without a basename is nonsense.
+  if (!info->hasBasename())
+    return std::nullopt;
+
+  return demangled_name.slice(info->BasenameRange.first,
+                              info->BasenameRange.second);
+}
+
+static std::optional<llvm::StringRef>
+GetDemangledFunctionPrefix(const SymbolContext &sc) {
+  Mangled mangled = sc.GetPossiblyInlinedFunctionName();
+  if (!mangled)
+    return std::nullopt;
+
+  auto demangled_name = mangled.GetDemangledName().GetStringRef();
+  if (demangled_name.empty())
+    return std::nullopt;
+
+  const std::optional<DemangledNameInfo> &info = mangled.GetDemangledInfo();
+  if (!info)
+    return std::nullopt;
+
+  // Function without a basename is nonsense.
+  if (!info->hasBasename())
+    return std::nullopt;
+
+  return demangled_name.slice(info->PrefixRange.first,
+                              info->PrefixRange.second);
+}
+
+static std::optional<llvm::StringRef>
+GetDemangledFunctionSuffix(const SymbolContext &sc) {
+  Mangled mangled = sc.GetPossiblyInlinedFunctionName();
+  if (!mangled)
+    return std::nullopt;
+
+  auto demangled_name = mangled.GetDemangledName().GetStringRef();
+  if (demangled_name.empty())
+    return std::nullopt;
+
+  const std::optional<DemangledNameInfo> &info = mangled.GetDemangledInfo();
+  if (!info)
+    return std::nullopt;
+
+  // Function without a basename is nonsense.
+  if (!info->hasBasename())
+    return std::nullopt;
+
+  return demangled_name.slice(info->SuffixRange.first,
+                              info->SuffixRange.second);
+}
+
+static bool PrintDemangledArgumentList(Stream &s, const SymbolContext &sc) {
+  assert(sc.symbol);
+
+  Mangled mangled = sc.GetPossiblyInlinedFunctionName();
+  if (!mangled)
+    return false;
+
+  auto demangled_name = mangled.GetDemangledName().GetStringRef();
+  if (demangled_name.empty())
+    return false;
+
+  const std::optional<DemangledNameInfo> &info = mangled.GetDemangledInfo();
+  if (!info)
+    return false;
+
+  // Function without a basename is nonsense.
+  if (!info->hasBasename())
+    return false;
+
+  if (info->ArgumentsRange.second < info->ArgumentsRange.first)
+    return false;
+
+  s << demangled_name.slice(info->ArgumentsRange.first,
+                            info->ArgumentsRange.second);
+
+  return true;
+}
+
+static VariableListSP GetFunctionVariableList(const SymbolContext &sc) {
+  assert(sc.function);
+
+  if (sc.block)
+    if (Block *inline_block = sc.block->GetContainingInlinedBlock())
+      return inline_block->GetBlockVariableList(true);
+
+  return sc.function->GetBlock(true).GetBlockVariableList(true);
+}
+
+bool SwiftLanguage::HandleFrameFormatVariable(const SymbolContext &sc,
+                                              const ExecutionContext *exe_ctx,
+                                              FormatEntity::Entry::Type type,
+                                              Stream &s) {
+  switch (type) {
+  case FormatEntity::Entry::Type::FunctionBasename: {
+    std::optional<llvm::StringRef> name = GetDemangledBasename(sc);
+    if (!name)
+      return false;
+
+    s << *name;
+
+    return true;
+  }
+  case FormatEntity::Entry::Type::FunctionFormattedArguments: {
+    // This ensures we print the arguments even when no debug-info is available.
+    //
+    // FIXME: we should have a Entry::Type::FunctionArguments and
+    // use it in the plugin.cplusplus.display.function-name-format
+    // once we have a "fallback operator" in the frame-format language.
+    if (!sc.function && sc.symbol)
+      return PrintDemangledArgumentList(s, sc);
+    std::string display_name = SwiftLanguageRuntime::DemangleSymbolAsString(
+        sc.function->GetMangled().GetMangledName().GetStringRef(),
+        SwiftLanguageRuntime::eSimplified, &sc, exe_ctx);
+    if (display_name.empty())
+      return false;
+
+    VariableList args;
+    if (auto variable_list_sp = GetFunctionVariableList(sc))
+      variable_list_sp->AppendVariablesWithScope(eValueTypeVariableArgument,
+                                                 args);
+
+    ExecutionContextScope *exe_scope =
+        exe_ctx ? exe_ctx->GetBestExecutionContextScope() : nullptr;
+    return GetFunctionDisplayArgs(args, s, display_name, exe_scope);
+  }
+  case FormatEntity::Entry::Type::FunctionPrefix: {
+    std::optional<llvm::StringRef> prefix = GetDemangledFunctionPrefix(sc);
+    if (!prefix)
+      return false;
+
+    s << *prefix;
+
+    return true;
+  }
+  case FormatEntity::Entry::Type::FunctionSuffix: {
+    std::optional<llvm::StringRef> suffix = GetDemangledFunctionSuffix(sc);
+    if (!suffix)
+      return false;
+
+    s << *suffix;
+
+    return true;
+  }
+
+  case FormatEntity::Entry::Type::FunctionScope:
+  case FormatEntity::Entry::Type::FunctionTemplateArguments:
+  case FormatEntity::Entry::Type::FunctionReturnRight:
+  case FormatEntity::Entry::Type::FunctionReturnLeft:
+  case FormatEntity::Entry::Type::FunctionQualifiers:
+  default:
+    return true;
+  }
+}
+
+#define LLDB_PROPERTIES_language_swift
+#include "LanguageSwiftProperties.inc"
+
+enum {
+#define LLDB_PROPERTIES_language_swift
+#include "LanguageSwiftPropertiesEnum.inc"
+};
+
+namespace {
+class PluginProperties : public Properties {
+public:
+  static llvm::StringRef GetSettingName() { return "display"; }
+
+  PluginProperties() {
+    m_collection_sp = std::make_shared<OptionValueProperties>(GetSettingName());
+    m_collection_sp->Initialize(g_language_swift_properties);
+  }
+
+  FormatEntity::Entry GetFunctionNameFormat() const {
+    return GetPropertyAtIndexAs<const FormatEntity::Entry>(
+        ePropertyFunctionNameFormat, {});
+  }
+};
+} // namespace
+
+static PluginProperties &GetGlobalPluginProperties() {
+  static PluginProperties g_settings;
+  return g_settings;
+}
+
+FormatEntity::Entry SwiftLanguage::GetFunctionNameFormat() const {
+  return GetGlobalPluginProperties().GetFunctionNameFormat();
+}
+
+void SwiftLanguage::DebuggerInitialize(Debugger &debugger) {
+  if (!PluginManager::GetSettingForSwiftLanguagePlugin(
+          debugger, PluginProperties::GetSettingName())) {
+    PluginManager::CreateSettingForSwiftLanguagePlugin(
+        debugger, GetGlobalPluginProperties().GetValueProperties(),
+        "Properties for the Swift language plug-in.",
+        /*is_global_property=*/true);
+  }
+}
+
 namespace {
 using namespace swift::Demangle;
 struct AsyncInfo {
diff --git a/lldb/source/Plugins/Language/Swift/SwiftLanguage.h b/lldb/source/Plugins/Language/Swift/SwiftLanguage.h
index 9d51c2a3a012b..c322e59ebe668 100644
--- a/lldb/source/Plugins/Language/Swift/SwiftLanguage.h
+++ b/lldb/source/Plugins/Language/Swift/SwiftLanguage.h
@@ -130,6 +130,8 @@ class SwiftLanguage : public Language {
 
   llvm::StringRef GetInstanceVariableName() override { return "self"; }
 
+  FormatEntity::Entry GetFunctionNameFormat() const override;
+
   /// Override that skips breakpoints inside await resume ("Q") async funclets.
   void FilterForLineBreakpoints(
       llvm::SmallVectorImpl<SymbolContext> &) const override;
@@ -138,6 +140,9 @@ class SwiftLanguage : public Language {
   // PluginInterface protocol
   //------------------------------------------------------------------
   llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
+
+private:
+  static void DebuggerInitialize(Debugger &);
 };
 
 } // namespace lldb_private
diff --git a/lldb/source/Plugins/Language/Swift/SwiftMangled.h b/lldb/source/Plugins/Language/Swift/SwiftMangled.h
new file mode 100644
index 0000000000000..b9c9edfed6adf
--- /dev/null
+++ b/lldb/source/Plugins/Language/Swift/SwiftMangled.h
@@ -0,0 +1,89 @@
+//===-- SwiftMangled.h ------------------------------------------*- C++ -*-===//
+//
+// This source file is part of the Swift.org open source project
+//
+// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_SwiftDemangle_h_
+#define liblldb_SwiftDemangle_h_
+
+#include "lldb/Core/DemangledNameInfo.h"
+#include "swift/Demangling/Demangle.h"
+
+using namespace swift::Demangle;
+
+class TrackingNodePrinter : public NodePrinter {
+public:
+  TrackingNodePrinter(DemangleOptions options) : NodePrinter(options) {}
+
+  lldb_private::DemangledNameInfo takeInfo() { return std::move(info); }
+
+private:
+  lldb_private::DemangledNameInfo info;
+  std::optional<unsigned> parametersDepth;
+
+  void startName() {
+    if (!info.hasBasename())
+      info.BasenameRange.first = getStreamLength();
+  }
+
+  void endName() {
+    if (!info.hasBasename())
+      info.BasenameRange.second = getStreamLength();
+  }
+
+  void startParameters(unsigned depth) {
+    if (parametersDepth || !info.hasBasename() || info.hasArguments()) {
+      return;
+    }
+    info.ArgumentsRange.first = getStreamLength();
+    parametersDepth = depth;
+  }
+
+  void endParameters(unsigned depth) {
+    if (!parametersDepth || *parametersDepth != depth || info.hasArguments()) {
+      return;
+    }
+    info.ArgumentsRange.second = getStreamLength();
+  }
+
+  bool shouldTrackNameRange(NodePointer Node) const {
+    switch (Node->getKind()) {
+    case Node::Kind::Function:
+    case Node::Kind::Constructor:
+    case Node::Kind::Allocator:
+    case Node::Kind::ExplicitClosure:
+      return true;
+    default:
+      return false;
+    }
+  }
+
+  void printFunctionName(bool hasName, llvm::StringRef &OverwriteName,
+                         llvm::StringRef &ExtraName, bool MultiWordName,
+                         int &ExtraIndex, NodePointer Entity,
+                         unsigned int depth) override {
+    if (shouldTrackNameRange(Entity))
+      startName();
+    NodePrinter::printFunctionName(hasName, OverwriteName, ExtraName,
+                                   MultiWordName, ExtraIndex, Entity, depth);
+    if (shouldTrackNameRange(Entity))
+      endName();
+  }
+
+  void printFunctionParameters(NodePointer LabelList, NodePointer ParameterType,
+                               unsigned depth, bool showTypes) override {
+    startParameters(depth);
+    NodePrinter::printFunctionParameters(LabelList, ParameterType, depth,
+                                         showTypes);
+    endParameters(depth);
+  }
+};
+
+#endif // liblldb_SwiftDemangle_h_
diff --git a/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h b/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h
index 1751bdc8ffe25..f15d8c42e851d 100644
--- a/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h
+++ b/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h
@@ -200,6 +200,12 @@ class SwiftLanguageRuntime : public LanguageRuntime {
   IsSwiftAsyncAwaitResumePartialFunctionSymbol(llvm::StringRef name);
 
   enum DemangleMode { eSimplified, eTypeName, eDisplayTypeName };
+
+  static std::pair<std::string, std::optional<DemangledNameInfo>>
+  DemangleSymbolAsString(llvm::StringRef symbol, DemangleMode mode,
+                         bool tracking, const SymbolContext *sc = nullptr,
+                         const ExecutionContext *exe_ctx = nullptr);
+
   static std::string
   DemangleSymbolAsString(llvm::StringRef symbol, DemangleMode mode,
                          const SymbolContext *sc = nullptr,
@@ -207,6 +213,11 @@ class SwiftLanguageRuntime : public LanguageRuntime {
 
   static std::string GetParentNameIfClosure(llvm::StringRef mangled_name);
 
+  static std::pair<std::string, DemangledNameInfo>
+  TrackedDemangleSymbolAsString(llvm::StringRef symbol, DemangleMode mode,
+                                const SymbolContext *sc = nullptr,
+                                const ExecutionContext *exe_ctx = nullptr);
+
   /// Demangle a symbol to a swift::Demangle node tree.
   ///
   /// This is a central point of access, for purposes such as logging.
diff --git a/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeNames.cpp b/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeNames.cpp
index babe548ebb7b3..b5d1c494b0c0e 100644
--- a/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeNames.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeNames.cpp
@@ -15,6 +15,7 @@
 #include "SwiftLanguageRuntime.h"
 
 #include "lldb/Breakpoint/StoppointCallbackContext.h"
+#include "lldb/Core/DemangledNameInfo.h"
 #include "lldb/Symbol/Block.h"
 #include "lldb/Symbol/CompileUnit.h"
 #include "lldb/Symbol/VariableList.h"
@@ -27,10 +28,11 @@
 #include "swift/ABI/Task.h"
 #include "swift/Demangling/Demangle.h"
 #include "swift/Demangling/Demangler.h"
+#include "swift/Demangling/ManglingFlavor.h"
 
+#include "Plugins/Language/Swift/SwiftMangled.h"
 #include "Plugins/Process/Utility/RegisterContext_x86.h"
 #include "Utility/ARM64_DWARF_Registers.h"
-#include "swift/Demangling/ManglingFlavor.h"
 #include "llvm/ADT/SmallSet.h"
 
 using namespace lldb;
@@ -816,9 +818,11 @@ void SwiftLanguageRuntime::GetGenericParameterNamesForFunction(
   }
 }
 
-std::string SwiftLanguageRuntime::DemangleSymbolAsString(
-    llvm::StringRef symbol, DemangleMode mode, const SymbolContext *sc,
-    const ExecutionContext *exe_ctx) {
+std::pair<std::string, std::optional<DemangledNameInfo>>
+SwiftLanguageRuntime::DemangleSymbolAsString(llvm::StringRef symbol,
+                                             DemangleMode mode, bool tracking,
+                                             const SymbolContext *sc,
+                                             const ExecutionContext *exe_ctx) {
   bool did_init = false;
   llvm::DenseMap<ArchetypePath, llvm::StringRef> dict;
   swift::Demangle::DemangleOptions options;
@@ -863,7 +867,7 @@ std::string SwiftLanguageRuntime::DemangleSymbolAsString(
       return swift::Demangle::genericParameterName(depth, index);
     };
   } else {
-    // Print generic generic parameter names.
+    // Print generic parameter names.
     options.GenericParameterName = [&](uint64_t depth, uint64_t index) {
       std::string name;
       {
@@ -873,7 +877,29 @@ std::string SwiftLanguageRuntime::DemangleSymbolAsString(
       return name;
     };
   }
-  return swift::Demangle::demangleSymbolAsString(symbol, options);
+  if (tracking) {
+    TrackingNodePrinter printer = TrackingNodePrinter(options);
+    swift::Demangle::demangleSymbolAsString(symbol, &printer);
+    return std::pair<std::string, std::optional<DemangledNameInfo>>(
+        printer.takeString(), printer.takeInfo());
+  }
+  return std::pair<std::string, std::optional<DemangledNameInfo>>(
+      swift::Demangle::demangleSymbolAsString(symbol, options), std::nullopt);
+}
+
+std::string SwiftLanguageRuntime::DemangleSymbolAsString(
+    llvm::StringRef symbol, DemangleMode mode, const SymbolContext *sc,
+    const ExecutionContext *exe_ctx) {
+  return DemangleSymbolAsString(symbol, mode, false, sc, exe_ctx).first;
+}
+
+std::pair<std::string, DemangledNameInfo>
+SwiftLanguageRuntime::TrackedDemangleSymbolAsString(
+    llvm::StringRef symbol, DemangleMode mode, const SymbolContext *sc,
+    const ExecutionContext *exe_ctx) {
+  auto demangledData = DemangleSymbolAsString(symbol, mode, true, sc, exe_ctx);
+  return std::pair<std::string, DemangledNameInfo>(demangledData.first,
+                                                   *demangledData.second);
 }
 
 swift::Demangle::NodePointer
diff --git a/lldb/unittests/Core/CMakeLists.txt b/lldb/unittests/Core/CMakeLists.txt
index f06fcd250cf7d..65c52fbec4232 100644
--- a/lldb/unittests/Core/CMakeLists.txt
+++ b/lldb/unittests/Core/CMakeLists.txt
@@ -11,6 +11,7 @@ add_lldb_unittest(LLDBCoreTests
   RichManglingContextTest.cpp
   SourceLocationSpecTest.cpp
   SourceManagerTest.cpp
+  SwiftDemanglingPartsTest.cpp
   UniqueCStringMapTest.cpp
 
   LINK_LIBS
diff --git a/lldb/unittests/Core/SwiftDemanglingPartsTest.cpp b/lldb/unittests/Core/SwiftDemanglingPartsTest.cpp
new file mode 100644
index 0000000000000..558e8cad2fb5d
--- /dev/null
+++ b/lldb/unittests/Core/SwiftDemanglingPartsTest.cpp
@@ -0,0 +1,1263 @@
+//===-- SwiftMangledTest.cpp ----------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "Plugins/LanguageRuntime/Swift/SwiftLanguageRuntime.h"
+#include "TestingSupport/TestUtilities.h"
+
+#include "lldb/Core/DemangledNameInfo.h"
+#include "lldb/Core/Mangled.h"
+
+#include "gtest/gtest.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+struct SwiftDemanglingPartsTestCase {
+  const char *mangled;
+  DemangledNameInfo expected_info;
+  std::string_view basename;
+  std::string_view arguments;
+};
+
+SwiftDemanglingPartsTestCase g_swift_demangling_parts_test_cases[] = {
+    // clang-format off
+  { "_TFC3foo3bar3basfT3zimCS_3zim_T_",
+    { /*.BasenameRange=*/{8, 11}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 25},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 8}, /*.SuffixRange=*/{25, 31}
+    },
+    /*.basename=*/"bas",
+    /*.arguments=*/"(zim: foo.zim)"
+  },
+  { "_TToFC3foo3bar3basfT3zimCS_3zim_T_",
+    { /*.BasenameRange=*/{14, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 31},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 14}, /*.SuffixRange=*/{31, 37}
+    },
+    /*.basename=*/"bas",
+    /*.arguments=*/"(zim: foo.zim)"
+  },
+  { "_TTOFSC3fooFTSdSd_Sd",
+    { /*.BasenameRange=*/{25, 28}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{28, 56},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 25}, /*.SuffixRange=*/{56, 72}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Double, Swift.Double)"
+  },
+  { "_T03foo3barC3basyAA3zimCAE_tFTo",
+    { /*.BasenameRange=*/{14, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 31},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 14}, /*.SuffixRange=*/{31, 37}
+    },
+    /*.basename=*/"bas",
+    /*.arguments=*/"(zim: foo.zim)"
+  },
+  { "_T0SC3fooS2d_SdtFTO",
+    { /*.BasenameRange=*/{25, 28}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{28, 56},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 25}, /*.SuffixRange=*/{56, 72}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Double, Swift.Double)"
+  },
+  { "_$s3foo3barC3bas3zimyAaEC_tFTo",
+    { /*.BasenameRange=*/{14, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 31},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 14}, /*.SuffixRange=*/{31, 37}
+    },
+    /*.basename=*/"bas",
+    /*.arguments=*/"(zim: foo.zim)"
+  },
+  { "_$sSC3fooyS2d_SdtFTO",
+    { /*.BasenameRange=*/{25, 28}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{28, 56},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 25}, /*.SuffixRange=*/{56, 72}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Double, Swift.Double)"
+  },
+  { "$s4main3fooyySiFyyXEfU_TA.1",
+    { /*.BasenameRange=*/{28, 38}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{39, 41},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 28}, /*.SuffixRange=*/{41, 103}
+    },
+    /*.basename=*/"closure #1",
+    /*.arguments=*/"()"
+  },
+  { "$s4main8MyStructV3fooyyFAA1XV_Tg5.foo",
+    { /*.BasenameRange=*/{49, 52}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{52, 54},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 49}, /*.SuffixRange=*/{54, 89}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"()"
+  },
+  { "_TTDFC3foo3bar3basfT3zimCS_3zim_T_",
+    { /*.BasenameRange=*/{16, 19}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{19, 33},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 16}, /*.SuffixRange=*/{33, 39}
+    },
+    /*.basename=*/"bas",
+    /*.arguments=*/"(zim: foo.zim)"
+  },
+  { "_TF3foooi1pFTCS_3barVS_3bas_OS_3zim",
+    { /*.BasenameRange=*/{4, 11}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 29},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 4}, /*.SuffixRange=*/{29, 40}
+    },
+    /*.basename=*/"+ infix",
+    /*.arguments=*/"(foo.bar, foo.bas)"
+  },
+  { "_TF3foooP1xFTCS_3barVS_3bas_OS_3zim",
+    { /*.BasenameRange=*/{4, 13}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{13, 31},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 4}, /*.SuffixRange=*/{31, 42}
+    },
+    /*.basename=*/"^ postfix",
+    /*.arguments=*/"(foo.bar, foo.bas)"
+  },
+  { "_TFC3foo3barCfT_S0_",
+    { /*.BasenameRange=*/{8, 25}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 27},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 8}, /*.SuffixRange=*/{27, 38}
+    },
+    /*.basename=*/"__allocating_init",
+    /*.arguments=*/"()"
+  },
+  { "_TFC3foo3barcfT_S0_",
+    { /*.BasenameRange=*/{8, 12}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{12, 14},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 8}, /*.SuffixRange=*/{14, 25}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TIF1t1fFT1iSi1sSS_T_A_",
+    { /*.BasenameRange=*/{24, 25}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 56},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 24}, /*.SuffixRange=*/{56, 62}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"(i: Swift.Int, s: Swift.String)"
+  },
+  { "_TIF1t1fFT1iSi1sSS_T_A0_",
+    { /*.BasenameRange=*/{24, 25}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 56},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 24}, /*.SuffixRange=*/{56, 62}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"(i: Swift.Int, s: Swift.String)"
+  },
+  { "_TFSqcfT_GSqx_",
+    { /*.BasenameRange=*/{15, 19}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{19, 21},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 15}, /*.SuffixRange=*/{21, 42}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TF21class_bound_protocols32class_bound_protocol_compositionFT1xPS_10ClassBoundS_13NotClassBound__PS0_S1__",
+    { /*.BasenameRange=*/{22, 54}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{54, 129},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 22}, /*.SuffixRange=*/{129, 203}
+    },
+    /*.basename=*/"class_bound_protocol_composition",
+    /*.arguments=*/"(x: class_bound_protocols.ClassBound & class_bound_protocols.NotClassBound)"
+  },
+  { "_TFVCC6nested6AClass12AnotherClass7AStruct9aFunctionfT1aSi_S2_",
+    { /*.BasenameRange=*/{35, 44}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{44, 58},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 35}, /*.SuffixRange=*/{58, 96}
+    },
+    /*.basename=*/"aFunction",
+    /*.arguments=*/"(a: Swift.Int)"
+  },
+  { "_TFCF5types1gFT1bSb_T_L0_10Collection3zimfT_T_",
+    { /*.BasenameRange=*/{0, 3}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{3, 5},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{5, 60}
+    },
+    /*.basename=*/"zim",
+    /*.arguments=*/"()"
+  },
+  { "_TFF17capture_promotion22test_capture_promotionFT_FT_SiU_FT_Si_promote0",
+    { /*.BasenameRange=*/{0, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 13},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{13, 125}
+    },
+    /*.basename=*/"closure #1",
+    /*.arguments=*/"()"
+  },
+  { "_TFIVs8_Processi10_argumentsGSaSS_U_FT_GSaSS_",
+    { /*.BasenameRange=*/{0, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{0, 0},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{10, 130}
+    },
+    /*.basename=*/"_arguments",
+    /*.arguments=*/""
+  },
+  { "_TFIvVs8_Process10_argumentsGSaSS_iU_FT_GSaSS_",
+    { /*.BasenameRange=*/{0, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 13},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{13, 137}
+    },
+    /*.basename=*/"closure #1",
+    /*.arguments=*/"()"
+  },
+  { "_TTWC13call_protocol1CS_1PS_FS1_3foofT_Si",
+    { /*.BasenameRange=*/{37, 40}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{40, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 37}, /*.SuffixRange=*/{42, 121}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"()"
+  },
+  { "_T013call_protocol1CCAA1PA2aDP3fooSiyFTW",
+    { /*.BasenameRange=*/{37, 40}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{40, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 37}, /*.SuffixRange=*/{42, 121}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"()"
+  },
+  { "_TFC12dynamic_self1X1ffT_DS0_",
+    { /*.BasenameRange=*/{15, 16}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{16, 18},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 15}, /*.SuffixRange=*/{18, 26}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"()"
+  },
+  { "_TTSg5Si___TFSqcfT_GSqx_",
+    { /*.BasenameRange=*/{53, 57}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{57, 59},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 53}, /*.SuffixRange=*/{59, 80}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TTSgq5Si___TFSqcfT_GSqx_",
+    { /*.BasenameRange=*/{65, 69}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{69, 71},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 65}, /*.SuffixRange=*/{71, 92}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TTSg5SiSis3Foos_Sf___TFSqcfT_GSqx_",
+    { /*.BasenameRange=*/{102, 106}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{106, 108},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 102}, /*.SuffixRange=*/{108, 129}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TTSg5Si_Sf___TFSqcfT_GSqx_",
+    { /*.BasenameRange=*/{66, 70}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{70, 72},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 66}, /*.SuffixRange=*/{72, 93}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_TTSr5Si___TF4test7genericurFxx",
+    { /*.BasenameRange=*/{61, 68}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{71, 74},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 61}, /*.SuffixRange=*/{74, 79}
+    },
+    /*.basename=*/"generic",
+    /*.arguments=*/"(A)"
+  },
+  { "_TTSrq5Si___TF4test7genericurFxx",
+    { /*.BasenameRange=*/{73, 80}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{83, 86},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 73}, /*.SuffixRange=*/{86, 91}
+    },
+    /*.basename=*/"generic",
+    /*.arguments=*/"(A)"
+  },
+  { "_TF8manglingX22egbpdajGbuEbxfgehfvwxnFT_T_",
+    { /*.BasenameRange=*/{9, 43}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{43, 45},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{45, 51}
+    },
+    /*.basename=*/"ليهمابتكلموشعربي؟",
+    /*.arguments=*/"()"
+  },
+  { "_TF8manglingX24ihqwcrbEcvIaIdqgAFGpqjyeFT_T_",
+    { /*.BasenameRange=*/{9, 36}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{36, 38},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{38, 44}
+    },
+    /*.basename=*/"他们为什么不说中文",
+    /*.arguments=*/"()"
+  },
+  { "_TF8manglingX27ihqwctvzcJBfGFJdrssDxIboAybFT_T_",
+    { /*.BasenameRange=*/{9, 36}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{36, 38},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{38, 44}
+    },
+    /*.basename=*/"他們爲什麽不說中文",
+    /*.arguments=*/"()"
+  },
+  { "_TF8manglingX30Proprostnemluvesky_uybCEdmaEBaFT_T_",
+    { /*.BasenameRange=*/{9, 35}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{35, 37},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{37, 43}
+    },
+    /*.basename=*/"Pročprostěnemluvíčesky",
+    /*.arguments=*/"()"
+  },
+  { "_TF8manglingXoi7p_qcaDcFTSiSi_Si",
+    { /*.BasenameRange=*/{9, 20}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{20, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{42, 55}
+    },
+    /*.basename=*/"«+» infix",
+    /*.arguments=*/"(Swift.Int, Swift.Int)"
+  },
+  { "_TF8manglingoi2qqFTSiSi_T_",
+    { /*.BasenameRange=*/{9, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 39},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{39, 45}
+    },
+    /*.basename=*/"?? infix",
+    /*.arguments=*/"(Swift.Int, Swift.Int)"
+  },
+  { "_TFE11ext_structAV11def_structA1A4testfT_T_",
+    { /*.BasenameRange=*/{41, 45}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{45, 47},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 41}, /*.SuffixRange=*/{47, 53}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"()"
+  },
+  { "_TF13devirt_accessP5_DISC15getPrivateClassFT_CS_P5_DISC12PrivateClass",
+    { /*.BasenameRange=*/{14, 40}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{40, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 14}, /*.SuffixRange=*/{42, 83}
+    },
+    /*.basename=*/"(getPrivateClass in _DISC)",
+    /*.arguments=*/"()"
+  },
+  { "_TF4mainP5_mainX3wxaFT_T_",
+    { /*.BasenameRange=*/{5, 18}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{18, 20},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{20, 26}
+    },
+    /*.basename=*/"(λ in _main)",
+    /*.arguments=*/"()"
+  },
+  { "_TF4mainP5_main3abcFT_aS_P5_DISC3xyz",
+    { /*.BasenameRange=*/{5, 19}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{19, 21},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{21, 44}
+    },
+    /*.basename=*/"(abc in _main)",
+    /*.arguments=*/"()"
+  },
+  { "_TFCs13_NSSwiftArray29canStoreElementsOfDynamicTypefPMP_Sb",
+    { /*.BasenameRange=*/{20, 49}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{49, 59},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 20}, /*.SuffixRange=*/{59, 73}
+    },
+    /*.basename=*/"canStoreElementsOfDynamicType",
+    /*.arguments=*/"(Any.Type)"
+  },
+  { "_TTSf1cl35_TFF7specgen6callerFSiT_U_FTSiSi_T_Si___TF7specgen12take_closureFFTSiSi_T_T_",
+    { /*.BasenameRange=*/{183, 195}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{195, 225},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 183}, /*.SuffixRange=*/{225, 231}
+    },
+    /*.basename=*/"take_closure",
+    /*.arguments=*/"((Swift.Int, Swift.Int) -> ())"
+  },
+  { "_TTSfq1cl35_TFF7specgen6callerFSiT_U_FTSiSi_T_Si___TF7specgen12take_closureFFTSiSi_T_T_",
+    { /*.BasenameRange=*/{195, 207}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{207, 237},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 195}, /*.SuffixRange=*/{237, 243}
+    },
+    /*.basename=*/"take_closure",
+    /*.arguments=*/"((Swift.Int, Swift.Int) -> ())"
+  },
+  { "_TTSf1cl35_TFF7specgen6callerFSiT_U_FTSiSi_T_Si___TTSg5Si___TF7specgen12take_closureFFTSiSi_T_T_",
+    { /*.BasenameRange=*/{221, 233}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{233, 263},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 221}, /*.SuffixRange=*/{263, 269}
+    },
+    /*.basename=*/"take_closure",
+    /*.arguments=*/"((Swift.Int, Swift.Int) -> ())"
+  },
+  { "_TTSg5Si___TTSf1cl35_TFF7specgen6callerFSiT_U_FTSiSi_T_Si___TF7specgen12take_closureFFTSiSi_T_T_",
+    { /*.BasenameRange=*/{221, 233}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{233, 263},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 221}, /*.SuffixRange=*/{263, 269}
+    },
+    /*.basename=*/"take_closure",
+    /*.arguments=*/"((Swift.Int, Swift.Int) -> ())"
+  },
+  { "_TTSf1cpi0_cpfl0_cpse0v4u123_cpg53globalinit_33_06E7F1D906492AE070936A9B58CBAE1C_token8_cpfr36_TFtest_capture_propagation2_closure___TF7specgen12take_closureFFTSiSi_T_T_",
+    { /*.BasenameRange=*/{357, 369}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{369, 399},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 357}, /*.SuffixRange=*/{399, 405}
+    },
+    /*.basename=*/"take_closure",
+    /*.arguments=*/"((Swift.Int, Swift.Int) -> ())"
+  },
+  { "_TTSf0gs___TFVs17_LegacyStringCore15_invariantCheckfT_T_",
+    { /*.BasenameRange=*/{105, 120}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{120, 122},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 105}, /*.SuffixRange=*/{122, 128}
+    },
+    /*.basename=*/"_invariantCheck",
+    /*.arguments=*/"()"
+  },
+  { "_TTSf2g___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{164, 168}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{168, 189},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 164}, /*.SuffixRange=*/{189, 216}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf2dg___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{173, 177}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{177, 198},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 173}, /*.SuffixRange=*/{198, 225}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf2dgs___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{186, 190}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{190, 211},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 186}, /*.SuffixRange=*/{211, 238}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf3d_i_d_i_d_i___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{209, 213}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{213, 234},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 209}, /*.SuffixRange=*/{234, 261}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf3d_i_n_i_d_i___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{194, 198}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{198, 219},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 194}, /*.SuffixRange=*/{219, 246}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TFFV23interface_type_mangling18GenericTypeContext23closureInGenericContexturFqd__T_L_3fooFTqd__x_T_",
+    { /*.BasenameRange=*/{0, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{7, 14},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{14, 103}
+    },
+    /*.basename=*/"foo #1",
+    /*.arguments=*/"(A1, A)"
+  },
+  { "_TFFV23interface_type_mangling18GenericTypeContextg31closureInGenericPropertyContextxL_3fooFT_x",
+    { /*.BasenameRange=*/{0, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{7, 9},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{9, 103}
+    },
+    /*.basename=*/"foo #1",
+    /*.arguments=*/"()"
+  },
+  { "_TTWurGV23interface_type_mangling18GenericTypeContextx_S_18GenericWitnessTestS_FS1_23closureInGenericContextuRxS1_rfqd__T_",
+    { /*.BasenameRange=*/{64, 87}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{142, 146},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 64}, /*.SuffixRange=*/{146, 289}
+    },
+    /*.basename=*/"closureInGenericContext",
+    /*.arguments=*/"(A1)"
+  },
+  { "_TTWurGV23interface_type_mangling18GenericTypeContextx_S_18GenericWitnessTestS_FS1_16twoParamsAtDepthu0_RxS1_rfTqd__1yqd_0__T_",
+    { /*.BasenameRange=*/{64, 80}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{138, 149},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 64}, /*.SuffixRange=*/{149, 292}
+    },
+    /*.basename=*/"twoParamsAtDepth",
+    /*.arguments=*/"(A1, y: B1)"
+  },
+  { "_TFC3red11BaseClassEHcfzT1aSi_S0_",
+    { /*.BasenameRange=*/{16, 20}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{20, 34},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 16}, /*.SuffixRange=*/{34, 60}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(a: Swift.Int)"
+  },
+  { "_TFC4testP33_83378C430F65473055F1BD53F3ADCDB71C5doFoofT_T_",
+    { /*.BasenameRange=*/{46, 51}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{51, 53},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 46}, /*.SuffixRange=*/{53, 59}
+    },
+    /*.basename=*/"doFoo",
+    /*.arguments=*/"()"
+  },
+  { "_TFVV15nested_generics5Lunch6DinnerCfT11firstCoursex12secondCourseGSqqd___9leftoversx14transformationFxqd___GS1_x_qd___",
+    { /*.BasenameRange=*/{29, 33}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{33, 124},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 29}, /*.SuffixRange=*/{124, 163}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(firstCourse: A, secondCourse: Swift.Optional<A1>, leftovers: A, transformation: (A) -> A1)"
+  },
+  { "_TFVFC15nested_generics7HotDogs11applyRelishFT_T_L_6RelishCfT8materialx_GS1_x_",
+    { /*.BasenameRange=*/{0, 4}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{4, 17},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{17, 140}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(material: A)"
+  },
+  { "_TFVFE15nested_genericsSS3fooFT_T_L_6CheeseCfT8materialx_GS0_x_",
+    { /*.BasenameRange=*/{0, 4}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{4, 17},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{17, 164}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(material: A)"
+  },
+  { "_T0s17MutableCollectionP1asAARzs012RandomAccessB0RzsAA11SubSequences013BidirectionalB0PRpzsAdHRQlE06rotatecD05Indexs01_A9IndexablePQzAM15shiftingToStart_tFAJs01_J4BasePQzAQcfU_",
+    { /*.BasenameRange=*/{0, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 41},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{41, 435}
+    },
+    /*.basename=*/"closure #1",
+    /*.arguments=*/"(A.Swift._IndexableBase.Index)"
+  },
+  { "_$Ss17MutableCollectionP1asAARzs012RandomAccessB0RzsAA11SubSequences013BidirectionalB0PRpzsAdHRQlE06rotatecD015shiftingToStart5Indexs01_A9IndexablePQzAN_tFAKs01_M4BasePQzAQcfU_",
+    { /*.BasenameRange=*/{0, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 41},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 0}, /*.SuffixRange=*/{41, 435}
+    },
+    /*.basename=*/"closure #1",
+    /*.arguments=*/"(A.Swift._IndexableBase.Index)"
+  },
+  { "_T04main5innerys5Int32Vz_yADctF25closure_with_box_argumentxz_Bi32__lXXTf1nc_n",
+    { /*.BasenameRange=*/{151, 156}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{156, 196},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 151}, /*.SuffixRange=*/{196, 202}
+    },
+    /*.basename=*/"inner",
+    /*.arguments=*/"(inout Swift.Int32, (Swift.Int32) -> ())"
+  },
+  { "_$S4main5inneryys5Int32Vz_yADctF25closure_with_box_argumentxz_Bi32__lXXTf1nc_n",
+    { /*.BasenameRange=*/{151, 156}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{156, 196},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 151}, /*.SuffixRange=*/{196, 202}
+    },
+    /*.basename=*/"inner",
+    /*.arguments=*/"(inout Swift.Int32, (Swift.Int32) -> ())"
+  },
+  { "_T03foo6testityyyc_yyctF1a1bTf3pfpf_n",
+    { /*.BasenameRange=*/{132, 138}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{138, 158},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 132}, /*.SuffixRange=*/{158, 164}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(() -> (), () -> ())"
+  },
+  { "_$S3foo6testityyyyc_yyctF1a1bTf3pfpf_n",
+    { /*.BasenameRange=*/{132, 138}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{138, 158},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 132}, /*.SuffixRange=*/{158, 164}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(() -> (), () -> ())"
+  },
+  { "_T0s10DictionaryV3t17E6Index2V1loiSbAEyxq__G_AGtFZ",
+    { /*.BasenameRange=*/{50, 57}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{57, 157},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 50}, /*.SuffixRange=*/{157, 171}
+    },
+    /*.basename=*/"< infix",
+    /*.arguments=*/"((extension in t17):Swift.Dictionary<A, B>.Index2, (extension in t17):Swift.Dictionary<A, B>.Index2)"
+  },
+  { "_T08mangling14varargsVsArrayySi3arrd_SS1ntF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 59},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{59, 65}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Int..., n: Swift.String)"
+  },
+  { "_T08mangling14varargsVsArrayySaySiG3arr_SS1ntF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 69},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{69, 75}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>, n: Swift.String)"
+  },
+  { "_T08mangling14varargsVsArrayySaySiG3arrd_SS1ntF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 72},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{72, 78}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>..., n: Swift.String)"
+  },
+  { "_T08mangling14varargsVsArrayySi3arrd_tF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{42, 48}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Int...)"
+  },
+  { "_T08mangling14varargsVsArrayySaySiG3arrd_tF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 55},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{55, 61}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>...)"
+  },
+  { "_$Ss10DictionaryV3t17E6Index2V1loiySbAEyxq__G_AGtFZ",
+    { /*.BasenameRange=*/{50, 57}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{57, 157},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 50}, /*.SuffixRange=*/{157, 171}
+    },
+    /*.basename=*/"< infix",
+    /*.arguments=*/"((extension in t17):Swift.Dictionary<A, B>.Index2, (extension in t17):Swift.Dictionary<A, B>.Index2)"
+  },
+  { "_$S8mangling14varargsVsArray3arr1nySid_SStF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 59},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{59, 65}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Int..., n: Swift.String)"
+  },
+  { "_$S8mangling14varargsVsArray3arr1nySaySiG_SStF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 69},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{69, 75}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>, n: Swift.String)"
+  },
+  { "_$S8mangling14varargsVsArray3arr1nySaySiGd_SStF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 72},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{72, 78}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>..., n: Swift.String)"
+  },
+  { "_$S8mangling14varargsVsArray3arrySid_tF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{42, 48}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Int...)"
+  },
+  { "_$S8mangling14varargsVsArray3arrySaySiGd_tF",
+    { /*.BasenameRange=*/{9, 23}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{23, 55},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{55, 61}
+    },
+    /*.basename=*/"varargsVsArray",
+    /*.arguments=*/"(arr: Swift.Array<Swift.Int>...)"
+  },
+  { "_T010Foundation11MeasurementV12SimulatorKitSo9UnitAngleCRszlE11OrientationO2eeoiSbAcDEAGOyAF_G_AKtFZ",
+    { /*.BasenameRange=*/{98, 106}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{106, 264},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 98}, /*.SuffixRange=*/{264, 278}
+    },
+    /*.basename=*/"== infix",
+    /*.arguments=*/"((extension in SimulatorKit):Foundation.Measurement<__C.UnitAngle>.Orientation, (extension in SimulatorKit):Foundation.Measurement<__C.UnitAngle>.Orientation)"
+  },
+  { "_$S10Foundation11MeasurementV12SimulatorKitSo9UnitAngleCRszlE11OrientationO2eeoiySbAcDEAGOyAF_G_AKtFZ",
+    { /*.BasenameRange=*/{98, 106}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{106, 264},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 98}, /*.SuffixRange=*/{264, 278}
+    },
+    /*.basename=*/"== infix",
+    /*.arguments=*/"((extension in SimulatorKit):Foundation.Measurement<__C.UnitAngle>.Orientation, (extension in SimulatorKit):Foundation.Measurement<__C.UnitAngle>.Orientation)"
+  },
+  { "_T04main1_yyF",
+    { /*.BasenameRange=*/{5, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{6, 8},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{8, 14}
+    },
+    /*.basename=*/"_",
+    /*.arguments=*/"()"
+  },
+  { "_T04test6testitSiyt_tF",
+    { /*.BasenameRange=*/{5, 11}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 15},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{15, 28}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(())"
+  },
+  { "_$S4test6testitySiyt_tF",
+    { /*.BasenameRange=*/{5, 11}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 15},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{15, 28}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(())"
+  },
+  { "_T03abc6testitySiFTm",
+    { /*.BasenameRange=*/{11, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 28},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 11}, /*.SuffixRange=*/{28, 34}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(Swift.Int)"
+  },
+  { "_T04main4TestCACSi1x_tc6_PRIV_Llfc",
+    { /*.BasenameRange=*/{10, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 40},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 10}, /*.SuffixRange=*/{40, 53}
+    },
+    /*.basename=*/"(in _PRIV_).init",
+    /*.arguments=*/"(x: Swift.Int)"
+  },
+  { "_$S3abc6testityySiFTm",
+    { /*.BasenameRange=*/{11, 17}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{17, 28},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 11}, /*.SuffixRange=*/{28, 34}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(Swift.Int)"
+  },
+  { "_$S4main4TestC1xACSi_tc6_PRIV_Llfc",
+    { /*.BasenameRange=*/{10, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 40},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 10}, /*.SuffixRange=*/{40, 53}
+    },
+    /*.basename=*/"(in _PRIV_).init",
+    /*.arguments=*/"(x: Swift.Int)"
+  },
+  { "_T03nix6testitSaySiGyFTv_",
+    { /*.BasenameRange=*/{28, 34}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{34, 36},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 28}, /*.SuffixRange=*/{36, 62}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"()"
+  },
+  { "_T03nix6testitSaySiGyFTv_r",
+    { /*.BasenameRange=*/{36, 42}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{42, 44},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 36}, /*.SuffixRange=*/{44, 70}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"()"
+  },
+  { "_T03nix6testitSaySiGyFTv0_",
+    { /*.BasenameRange=*/{28, 34}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{34, 36},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 28}, /*.SuffixRange=*/{36, 62}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"()"
+  },
+  { "$sSo5GizmoC11doSomethingyypSgSaySSGSgFToTembgnn_",
+    { /*.BasenameRange=*/{51, 62}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{62, 105},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 51}, /*.SuffixRange=*/{105, 128}
+    },
+    /*.basename=*/"doSomething",
+    /*.arguments=*/"(Swift.Optional<Swift.Array<Swift.String>>)"
+  },
+  { "_T0s24_UnicodeScalarExceptions33_0E4228093681F6920F0AB2E48B4F1C69LLVACycfC",
+    { /*.BasenameRange=*/{70, 74}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{74, 76},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 70}, /*.SuffixRange=*/{76, 149}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"()"
+  },
+  { "_T0s18EnumeratedIteratorVyxGs8Sequencess0B8ProtocolRzlsADP5splitSay03SubC0QzGSi9maxSplits_Sb25omittingEmptySubsequencesSb7ElementQzKc14whereSeparatortKFTW",
+    { /*.BasenameRange=*/{36, 41}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{41, 152},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 36}, /*.SuffixRange=*/{152, 294}
+    },
+    /*.basename=*/"split",
+    /*.arguments=*/"(maxSplits: Swift.Int, omittingEmptySubsequences: Swift.Bool, whereSeparator: (A.Element) throws -> Swift.Bool)"
+  },
+  { "$s18opaque_return_type3fooQryFQOHo",
+    { /*.BasenameRange=*/{85, 88}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{88, 90},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 85}, /*.SuffixRange=*/{90, 100}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"()"
+  },
+  { "$s20mangling_retroactive5test0yyAA1ZVy12RetroactiveB1XVSiAE1YVAG0D1A1PAAyHCg_AiJ1QAAyHCg1_GF",
+    { /*.BasenameRange=*/{21, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 93},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 21}, /*.SuffixRange=*/{93, 99}
+    },
+    /*.basename=*/"test0",
+    /*.arguments=*/"(mangling_retroactive.Z<RetroactiveB.X, Swift.Int, RetroactiveB.Y>)"
+  },
+  { "$s20mangling_retroactive5test0yyAA1ZVy12RetroactiveB1XVSiAE1YVAG0D1A1PHPyHCg_AiJ1QHPyHCg1_GF",
+    { /*.BasenameRange=*/{21, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 93},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 21}, /*.SuffixRange=*/{93, 99}
+    },
+    /*.basename=*/"test0",
+    /*.arguments=*/"(mangling_retroactive.Z<RetroactiveB.X, Swift.Int, RetroactiveB.Y>)"
+  },
+  { "$s20mangling_retroactive5test0yyAA1ZVy12RetroactiveB1XVSiAE1YVAG0D1A1PHpyHCg_AiJ1QHpyHCg1_GF",
+    { /*.BasenameRange=*/{21, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 93},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 21}, /*.SuffixRange=*/{93, 99}
+    },
+    /*.basename=*/"test0",
+    /*.arguments=*/"(mangling_retroactive.Z<RetroactiveB.X, Swift.Int, RetroactiveB.Y>)"
+  },
+  { "_TTSf0os___TFVs17_LegacyStringCore15_invariantCheckfT_T_",
+    { /*.BasenameRange=*/{105, 120}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{120, 122},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 105}, /*.SuffixRange=*/{122, 128}
+    },
+    /*.basename=*/"_invariantCheck",
+    /*.arguments=*/"()"
+  },
+  { "_TTSf2o___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{164, 168}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{168, 189},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 164}, /*.SuffixRange=*/{189, 216}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf2do___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{173, 177}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{177, 198},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 173}, /*.SuffixRange=*/{198, 225}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TTSf2dos___TTSf2s_d___TFVs17_LegacyStringCoreCfVs13_StringBufferS_",
+    { /*.BasenameRange=*/{186, 190}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{190, 211},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 186}, /*.SuffixRange=*/{211, 238}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(Swift._StringBuffer)"
+  },
+  { "_TtCF4test11doNotCrash1FT_QuL_8MyClass1",
+    { /*.BasenameRange=*/{20, 31}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{31, 33},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 20}, /*.SuffixRange=*/{33, 41}
+    },
+    /*.basename=*/"doNotCrash1",
+    /*.arguments=*/"()"
+  },
+  { "$s4Test5ProtoP8IteratorV10collectionAEy_qd__Gqd___tcfc",
+    { /*.BasenameRange=*/{20, 24}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{24, 40},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 20}, /*.SuffixRange=*/{40, 67}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(collection: A1)"
+  },
+  { "$s4test3fooV4blahyAA1SV1fQryFQOy_Qo_AHF",
+    { /*.BasenameRange=*/{9, 13}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{13, 61},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{61, 111}
+    },
+    /*.basename=*/"blah",
+    /*.arguments=*/"(<<opaque return type of test.S.f() -> some>>.0)"
+  },
+  { "$S3nix8MystructV1xACyxGx_tcfc7MyaliasL_ayx__GD",
+    { /*.BasenameRange=*/{30, 34}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{34, 40},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 30}, /*.SuffixRange=*/{40, 59}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(x: A)"
+  },
+  { "$S3nix8MystructV6testit1xyx_tF7MyaliasL_ayx__GD",
+    { /*.BasenameRange=*/{30, 36}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{36, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 30}, /*.SuffixRange=*/{42, 48}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(x: A)"
+  },
+  { "$S3nix8MystructV6testit1x1u1vyx_qd__qd_0_tr0_lF7MyaliasL_ayx_qd__qd_0__GD",
+    { /*.BasenameRange=*/{30, 36}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{44, 64},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 30}, /*.SuffixRange=*/{64, 70}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(x: A, u: A1, v: B1)"
+  },
+  { "$s1A1gyyxlFx_qd__t_Ti5",
+    { /*.BasenameRange=*/{40, 41}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{44, 47},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 40}, /*.SuffixRange=*/{47, 53}
+    },
+    /*.basename=*/"g",
+    /*.arguments=*/"(A)"
+  },
+  { "$s4Test6testityyxlFAA8MystructV_TB5",
+    { /*.BasenameRange=*/{47, 53}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{56, 59},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 47}, /*.SuffixRange=*/{59, 65}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"(A)"
+  },
+  { "$sSUss17FixedWidthIntegerRzrlEyxqd__cSzRd__lufCSu_SiTg5",
+    { /*.BasenameRange=*/{128, 132}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{165, 169},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 128}, /*.SuffixRange=*/{169, 174}
+    },
+    /*.basename=*/"init",
+    /*.arguments=*/"(A1)"
+  },
+  { "$s4test7genFuncyyx_q_tr0_lFSi_SbTtt1g5",
+    { /*.BasenameRange=*/{55, 62}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{68, 74},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 55}, /*.SuffixRange=*/{74, 80}
+    },
+    /*.basename=*/"genFunc",
+    /*.arguments=*/"(A, B)"
+  },
+  { "$s4test3StrCACycfC",
+    { /*.BasenameRange=*/{9, 26}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{26, 28},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{28, 40}
+    },
+    /*.basename=*/"__allocating_init",
+    /*.arguments=*/"()"
+  },
+  { "$s3red4testyAA3ResOyxSayq_GAEs5ErrorAAq_sAFHD1__HCg_GADyxq_GsAFR_r0_lF",
+    { /*.BasenameRange=*/{4, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{35, 50},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 4}, /*.SuffixRange=*/{50, 80}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"(red.Res<A, B>)"
+  },
+  { "$s3red4testyAA7OurTypeOy4them05TheirD0Vy5AssocQzGAjE0F8ProtocolAAxAA0c7DerivedH0HD1_AA0c4BaseH0HI1_AieKHA2__HCg_GxmAaLRzlF",
+    { /*.BasenameRange=*/{4, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{43, 51},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 4}, /*.SuffixRange=*/{51, 91}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"(A.Type)"
+  },
+  { "$sSo17OS_dispatch_queueC4sync7executeyyyXE_tFTOTA",
+    { /*.BasenameRange=*/{59, 63}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{63, 82},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 59}, /*.SuffixRange=*/{82, 88}
+    },
+    /*.basename=*/"sync",
+    /*.arguments=*/"(execute: () -> ())"
+  },
+  { "$s7example1fyyYaF",
+    { /*.BasenameRange=*/{8, 9}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{9, 11},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 8}, /*.SuffixRange=*/{11, 23}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"()"
+  },
+  { "$s7example1fyyYaKF",
+    { /*.BasenameRange=*/{8, 9}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{9, 11},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 8}, /*.SuffixRange=*/{11, 30}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"()"
+  },
+  { "$s4main20receiveInstantiationyySo34__CxxTemplateInst12MagicWrapperIiEVzF",
+    { /*.BasenameRange=*/{5, 25}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 71},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{71, 77}
+    },
+    /*.basename=*/"receiveInstantiation",
+    /*.arguments=*/"(inout __C.__CxxTemplateInst12MagicWrapperIiE)"
+  },
+  { "$s4main19returnInstantiationSo34__CxxTemplateInst12MagicWrapperIiEVyF",
+    { /*.BasenameRange=*/{5, 24}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{24, 26},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{26, 68}
+    },
+    /*.basename=*/"returnInstantiation",
+    /*.arguments=*/"()"
+  },
+  { "$s4main6testityyYaFTu",
+    { /*.BasenameRange=*/{31, 37}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{37, 39},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 31}, /*.SuffixRange=*/{39, 51}
+    },
+    /*.basename=*/"testit",
+    /*.arguments=*/"()"
+  },
+  { "$s13test_mangling3fooyS2f_S2ftFTJfUSSpSr",
+    { /*.BasenameRange=*/{41, 44}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{44, 83},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 41}, /*.SuffixRange=*/{83, 148}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, Swift.Float, Swift.Float)"
+  },
+  { "$s13test_mangling4foo21xq_x_t16_Differentiation14DifferentiableR_AA1P13TangentVectorRp_r0_lFAdERzAdER_AafGRpzAafHRQr0_lTJrSpSr",
+    { /*.BasenameRange=*/{41, 45}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{126, 132},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 41}, /*.SuffixRange=*/{132, 341}
+    },
+    /*.basename=*/"foo2",
+    /*.arguments=*/"(x: A)"
+  },
+  { "$s13test_mangling4foo21xq_x_t16_Differentiation14DifferentiableR_AA1P13TangentVectorRp_r0_lFAdERzAdER_AafGRpzAafHRQr0_lTJVrSpSr",
+    { /*.BasenameRange=*/{58, 62}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{143, 149},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 58}, /*.SuffixRange=*/{149, 358}
+    },
+    /*.basename=*/"foo2",
+    /*.arguments=*/"(x: A)"
+  },
+  { "$s13test_mangling3fooyS2f_xq_t16_Differentiation14DifferentiableR_r0_lFAcDRzAcDR_r0_lTJpUSSpSr",
+    { /*.BasenameRange=*/{26, 29}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{76, 95},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 26}, /*.SuffixRange=*/{95, 249}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, A, B)"
+  },
+  { "$s13test_mangling4foo21xq_x_t16_Differentiation14DifferentiableR_AA1P13TangentVectorRp_r0_lFTSAdERzAdER_AafGRpzAafHRQr0_lTJrSpSr",
+    { /*.BasenameRange=*/{79, 83}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{164, 170},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 79}, /*.SuffixRange=*/{170, 379}
+    },
+    /*.basename=*/"foo2",
+    /*.arguments=*/"(x: A)"
+  },
+  { "$s13test_mangling3fooyS2f_xq_t16_Differentiation14DifferentiableR_r0_lFAcDRzAcDR_r0_lTJpUSSpSrTj",
+    { /*.BasenameRange=*/{44, 47}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{94, 113},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 44}, /*.SuffixRange=*/{113, 267}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, A, B)"
+  },
+  { "$s13test_mangling3fooyS2f_xq_t16_Differentiation14DifferentiableR_r0_lFAcDRzAcDR_r0_lTJpUSSpSrTq",
+    { /*.BasenameRange=*/{48, 51}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{98, 117},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 48}, /*.SuffixRange=*/{117, 271}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, A, B)"
+  },
+  { "$s39differentiation_subset_parameters_thunk19inoutIndirectCalleryq_x_q_q0_t16_Differentiation14DifferentiableRzAcDR_AcDR0_r1_lFxq_Sdq_xq_Sdr0_ly13TangentVectorAcDPQy_AeFQzIsegnrr_Iegnnnro_TJSrSSSpSrSUSP",
+    { /*.BasenameRange=*/{106, 125}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{247, 256},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 106}, /*.SuffixRange=*/{256, 658}
+    },
+    /*.basename=*/"inoutIndirectCaller",
+    /*.arguments=*/"(A, B, C)"
+  },
+  { "$s13test_mangling3fooyS2f_S2ftFWJrSpSr",
+    { /*.BasenameRange=*/{57, 60}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{60, 99},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 57}, /*.SuffixRange=*/{99, 161}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, Swift.Float, Swift.Float)"
+  },
+  { "$s13test_mangling3fooyS2f_xq_t16_Differentiation14DifferentiableR_r0_lFAcDRzAcDR_r0_lWJrUSSpSr",
+    { /*.BasenameRange=*/{57, 60}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{107, 126},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 57}, /*.SuffixRange=*/{126, 280}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(Swift.Float, A, B)"
+  },
+  { "$s5async1hyyS2iYbXEF",
+    { /*.BasenameRange=*/{6, 7}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{7, 43},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 6}, /*.SuffixRange=*/{43, 49}
+    },
+    /*.basename=*/"h",
+    /*.arguments=*/"(@Sendable (Swift.Int) -> Swift.Int)"
+  },
+  { "$s5Actor02MyA0C17testAsyncFunctionyyYaKFTY0_",
+    { /*.BasenameRange=*/{54, 71}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{71, 73},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 54}, /*.SuffixRange=*/{73, 92}
+    },
+    /*.basename=*/"testAsyncFunction",
+    /*.arguments=*/"()"
+  },
+  { "$s5Actor02MyA0C17testAsyncFunctionyyYaKFTQ1_",
+    { /*.BasenameRange=*/{52, 69}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{69, 71},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 52}, /*.SuffixRange=*/{71, 90}
+    },
+    /*.basename=*/"testAsyncFunction",
+    /*.arguments=*/"()"
+  },
+  { "$s4diff1hyyS2iYjfXEF",
+    { /*.BasenameRange=*/{5, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{6, 58},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{58, 64}
+    },
+    /*.basename=*/"h",
+    /*.arguments=*/"(@differentiable(_forward) (Swift.Int) -> Swift.Int)"
+  },
+  { "$s4diff1hyyS2iYjrXEF",
+    { /*.BasenameRange=*/{5, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{6, 57},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{57, 63}
+    },
+    /*.basename=*/"h",
+    /*.arguments=*/"(@differentiable(reverse) (Swift.Int) -> Swift.Int)"
+  },
+  { "$s4diff1hyyS2iYjdXEF",
+    { /*.BasenameRange=*/{5, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{6, 48},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{48, 54}
+    },
+    /*.basename=*/"h",
+    /*.arguments=*/"(@differentiable (Swift.Int) -> Swift.Int)"
+  },
+  { "$s4diff1hyyS2iYjlXEF",
+    { /*.BasenameRange=*/{5, 6}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{6, 57},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{57, 63}
+    },
+    /*.basename=*/"h",
+    /*.arguments=*/"(@differentiable(_linear) (Swift.Int) -> Swift.Int)"
+  },
+  { "$s4test3fooyyS2f_SfYkztYjrXEF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{8, 96},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{96, 102}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(@differentiable(reverse) (Swift.Float, inout @noDerivative Swift.Float) -> Swift.Float)"
+  },
+  { "$s4test3fooyyS2f_SfYkntYjrXEF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{8, 98},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{98, 104}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(@differentiable(reverse) (Swift.Float, __owned @noDerivative Swift.Float) -> Swift.Float)"
+  },
+  { "$s4test3fooyyS2f_SfYktYjrXEF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{8, 90},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{90, 96}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(@differentiable(reverse) (Swift.Float, @noDerivative Swift.Float) -> Swift.Float)"
+  },
+  { "$s4test3fooyyS2f_SfYktYaYbYjrXEF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{8, 106},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{106, 112}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(@differentiable(reverse) @Sendable (Swift.Float, @noDerivative Swift.Float) async -> Swift.Float)"
+  },
+  { "$s1t10globalFuncyyAA7MyActorCYiF",
+    { /*.BasenameRange=*/{2, 12}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{12, 32},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 2}, /*.SuffixRange=*/{32, 38}
+    },
+    /*.basename=*/"globalFunc",
+    /*.arguments=*/"(isolated t.MyActor)"
+  },
+  { "$s6Foobar7Vector2VAASdRszlE10simdMatrix5scale6rotate9translateSo0C10_double3x3aACySdG_SdAJtFZ0D4TypeL_aySd__GD",
+    { /*.BasenameRange=*/{102, 112}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{112, 212},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 102}, /*.SuffixRange=*/{212, 234}
+    },
+    /*.basename=*/"simdMatrix",
+    /*.arguments=*/"(scale: Foobar.Vector2<Swift.Double>, rotate: Swift.Double, translate: Foobar.Vector2<Swift.Double>)"
+  },
+  { "$s17distributed_thunk2DAC1fyyFTE",
+    { /*.BasenameRange=*/{39, 40}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{40, 42},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 39}, /*.SuffixRange=*/{42, 48}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"()"
+  },
+  { "$s16distributed_test1XC7computeyS2iFTF",
+    { /*.BasenameRange=*/{44, 51}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{51, 62},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 44}, /*.SuffixRange=*/{62, 75}
+    },
+    /*.basename=*/"compute",
+    /*.arguments=*/"(Swift.Int)"
+  },
+  { "$s27distributed_actor_accessors7MyActorC7simple2ySSSiFTETFHF",
+    { /*.BasenameRange=*/{118, 125}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{125, 136},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 118}, /*.SuffixRange=*/{136, 152}
+    },
+    /*.basename=*/"simple2",
+    /*.arguments=*/"(Swift.Int)"
+  },
+  { "$s1A3bar1aySSYt_tF",
+    { /*.BasenameRange=*/{2, 5}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{5, 29},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 2}, /*.SuffixRange=*/{29, 35}
+    },
+    /*.basename=*/"bar",
+    /*.arguments=*/"(a: _const Swift.String)"
+  },
+  { "$s1t1fyyFSiAA3StrVcs7KeyPathCyADSiGcfu_SiADcfu0_33_556644b740b1b333fecb81e55a7cce98ADSiTf3npk_n",
+    { /*.BasenameRange=*/{258, 259}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{259, 261},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 258}, /*.SuffixRange=*/{261, 267}
+    },
+    /*.basename=*/"f",
+    /*.arguments=*/"()"
+  },
+  { "$s21back_deploy_attribute0A12DeployedFuncyyFTwb",
+    { /*.BasenameRange=*/{48, 64}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{64, 66},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 48}, /*.SuffixRange=*/{66, 72}
+    },
+    /*.basename=*/"backDeployedFunc",
+    /*.arguments=*/"()"
+  },
+  { "$s21back_deploy_attribute0A12DeployedFuncyyFTwB",
+    { /*.BasenameRange=*/{51, 67}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{67, 69},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 51}, /*.SuffixRange=*/{69, 75}
+    },
+    /*.basename=*/"backDeployedFunc",
+    /*.arguments=*/"()"
+  },
+  { "$s4test3fooyyAA1P_px1TRts_XPlF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{11, 36},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{36, 42}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(any test.P<Self.T == A>)"
+  },
+  { "$s4test3fooyyAA1P_pSS1TAaCPRts_Si1UAERtsXPF",
+    { /*.BasenameRange=*/{5, 8}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{8, 79},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{79, 85}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"(any test.P<Self.test.P.T == Swift.String, Self.test.P.U == Swift.Int>)"
+  },
+  { "$s4test3FooVAAyyAA1P_pF",
+    { /*.BasenameRange=*/{9, 13}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{13, 21},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 9}, /*.SuffixRange=*/{21, 27}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"(test.P)"
+  },
+  { "$s7Library3fooyyFTwS",
+    { /*.BasenameRange=*/{30, 33}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{33, 35},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 30}, /*.SuffixRange=*/{35, 41}
+    },
+    /*.basename=*/"foo",
+    /*.arguments=*/"()"
+  },
+  { "$s9MacroUser13testStringify1a1bySi_SitF9stringifyfMf1_",
+    { /*.BasenameRange=*/{58, 71}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{71, 99},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 58}, /*.SuffixRange=*/{99, 105}
+    },
+    /*.basename=*/"testStringify",
+    /*.arguments=*/"(a: Swift.Int, b: Swift.Int)"
+  },
+  { "$s9MacroUser016testFreestandingA9ExpansionyyF4Foo3L_V23bitwidthNumberedStructsfMf_6methodfMu0_",
+    { /*.BasenameRange=*/{111, 141}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{141, 143},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 111}, /*.SuffixRange=*/{143, 149}
+    },
+    /*.basename=*/"testFreestandingMacroExpansion",
+    /*.arguments=*/"()"
+  },
+  { "@__swiftmacro_1a13testStringifyAA1bySi_SitF9stringifyfMf_",
+    { /*.BasenameRange=*/{50, 63}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{63, 91},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 50}, /*.SuffixRange=*/{91, 97}
+    },
+    /*.basename=*/"testStringify",
+    /*.arguments=*/"(a: Swift.Int, b: Swift.Int)"
+  },
+  { "$s12typed_throws15rethrowConcreteyyAA7MyErrorOYKF",
+    { /*.BasenameRange=*/{13, 28}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{28, 30},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 13}, /*.SuffixRange=*/{30, 65}
+    },
+    /*.basename=*/"rethrowConcrete",
+    /*.arguments=*/"()"
+  },
+  { "$s3red3use2fnySiyYAXE_tF",
+    { /*.BasenameRange=*/{4, 7}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{7, 43},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 4}, /*.SuffixRange=*/{43, 49}
+    },
+    /*.basename=*/"use",
+    /*.arguments=*/"(fn: @isolated(any) () -> Swift.Int)"
+  },
+  { "$s4testAAyAA5KlassC_ACtACnYTF",
+    { /*.BasenameRange=*/{5, 9}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{9, 29},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{29, 65}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"(__owned test.Klass)"
+  },
+  { "$s5test24testyyAA5KlassCnYuF",
+    { /*.BasenameRange=*/{6, 10}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{10, 39},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 6}, /*.SuffixRange=*/{39, 45}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"(sending __owned test2.Klass)"
+  },
+  { "$s4testA2A5KlassCyYTF",
+    { /*.BasenameRange=*/{5, 9}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{9, 11},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{11, 33}
+    },
+    /*.basename=*/"test",
+    /*.arguments=*/"()"
+  },
+  { "$s4null19transferAsyncResultAA16NonSendableKlassCyYaYTF",
+    { /*.BasenameRange=*/{5, 24}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{24, 26},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 5}, /*.SuffixRange=*/{26, 65}
+    },
+    /*.basename=*/"transferAsyncResult",
+    /*.arguments=*/"()"
+  },
+  { "$s3red7MyActorC3runyxxyYaKACYcYTXEYaKlFZ",
+    { /*.BasenameRange=*/{19, 22}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 68},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 19}, /*.SuffixRange=*/{68, 86}
+    },
+    /*.basename=*/"run",
+    /*.arguments=*/"(@red.MyActor () async throws -> sending A)"
+  },
+  { "$s3red7MyActorC3runyxxyYaKYAYTXEYaKlFZ",
+    { /*.BasenameRange=*/{19, 22}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 70},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 19}, /*.SuffixRange=*/{70, 88}
+    },
+    /*.basename=*/"run",
+    /*.arguments=*/"(@isolated(any) () async throws -> sending A)"
+  },
+  { "$s3red7MyActorC3runyxxyYaKYCXEYaKlFZ",
+    { /*.BasenameRange=*/{19, 22}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{25, 71},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 19}, /*.SuffixRange=*/{71, 89}
+    },
+    /*.basename=*/"run",
+    /*.arguments=*/"(nonisolated(nonsending) () async throws -> A)"
+  },
+  { "_$s15raw_identifiers0020pathfoo_yuEHaaCiJskayyF",
+    { /*.BasenameRange=*/{16, 28}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{28, 30},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 16}, /*.SuffixRange=*/{30, 36}
+    },
+    /*.basename=*/"`path://foo`",
+    /*.arguments=*/"()"
+  },
+  { "_$s15raw_identifiers10FontWeightO009_100_FpEpdyyFZ",
+    { /*.BasenameRange=*/{34, 39}, /*.ScopeRange=*/{0, 0}, /*.ArgumentsRange=*/{39, 41},
+    /*.QualifiersRange=*/{0, 0}, /*.PrefixRange=*/{0, 34}, /*.SuffixRange=*/{41, 47}
+    },
+    /*.basename=*/"`100`",
+    /*.arguments=*/"()"
+  },
+    // clang-format on
+};
+
+struct SwiftDemanglingPartsTestFixture
+    : public ::testing::TestWithParam<SwiftDemanglingPartsTestCase> {};
+
+TEST_P(SwiftDemanglingPartsTestFixture, SwiftDemanglingParts) {
+  const auto &[mangled, info, basename, arguments] = GetParam();
+
+  TrackingNodePrinter printer =
+      TrackingNodePrinter(swift::Demangle::DemangleOptions());
+  swift::Demangle::demangleSymbolAsString(std::string(mangled), &printer);
+  std::string demangled = printer.takeString();
+  DemangledNameInfo nameInfo = printer.takeInfo();
+  nameInfo.PrefixRange.second =
+      std::min(info.BasenameRange.first, info.ArgumentsRange.first);
+  nameInfo.SuffixRange.first =
+      std::max(info.BasenameRange.second, info.ArgumentsRange.second);
+  nameInfo.SuffixRange.second = demangled.length();
+
+  EXPECT_EQ(nameInfo.BasenameRange, info.BasenameRange);
+  EXPECT_EQ(nameInfo.ScopeRange, info.ScopeRange);
+  EXPECT_EQ(nameInfo.ArgumentsRange, info.ArgumentsRange);
+  EXPECT_EQ(nameInfo.QualifiersRange, info.QualifiersRange);
+  EXPECT_EQ(nameInfo.PrefixRange, info.PrefixRange);
+  EXPECT_EQ(nameInfo.SuffixRange, info.SuffixRange);
+
+  auto get_part = [&](const std::pair<size_t, size_t> &loc) {
+    return demangled.substr(loc.first, loc.second - loc.first);
+  };
+
+  EXPECT_EQ(get_part(nameInfo.BasenameRange), basename);
+  EXPECT_EQ(get_part(nameInfo.ArgumentsRange), arguments);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    SwiftDemanglingPartsTests, SwiftDemanglingPartsTestFixture,
+    ::testing::ValuesIn(g_swift_demangling_parts_test_cases));