Index: lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
===================================================================
--- lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
+++ lldb/source/Plugins/Platform/MacOSX/PlatformDarwin.cpp
@@ -555,21 +555,21 @@
   return false;
 }
 
-// The architecture selection rules for arm processors These cpu subtypes have
-// distinct names (e.g. armv7f) but armv7 binaries run fine on an armv7f
-// processor.
-
+/// The architecture selection rules for arm processors These cpu subtypes have
+/// distinct names (e.g. armv7f) but armv7 binaries run fine on an armv7f
+/// processor.
 bool PlatformDarwin::ARMGetSupportedArchitectureAtIndex(uint32_t idx,
                                                         ArchSpec &arch) {
   ArchSpec system_arch(GetSystemArchitecture());
 
-// When lldb is running on a watch or tv, set the arch OS name appropriately.
 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
 #define OSNAME "tvos"
 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
 #define OSNAME "watchos"
 #elif defined(TARGET_OS_BRIDGE) && TARGET_OS_BRIDGE == 1
 #define OSNAME "bridgeos"
+#elif defined(TARGET_OS_OSX) && TARGET_OS_OSX == 1
+#define OSNAME "macosx"
 #else
 #define OSNAME "ios"
 #endif