Merge pull request #65046 from augusto2112/cherry-pick-add-nodebug-again

Reintroduce alwaysinline and nodebug as fallbacks to SWIFT_INLINE_THU…

Author: augusto2112

lib/PrintAsClang/_SwiftCxxInteroperability.h

@@ -28,20 +28,23 @@
 # define SWIFT_CALL __attribute__((swiftcall))
 #endif
 
-#if __has_attribute(always_inline) && __has_attribute(nodebug)
+#if __has_attribute(transparent_stepping)
+#define SWIFT_INLINE_THUNK_ATTRIBUTES                                          \
+  __attribute__((transparent_stepping))
+#elif __has_attribute(always_inline) && __has_attribute(nodebug)
 #define SWIFT_INLINE_THUNK_ATTRIBUTES                                          \
   __attribute__((always_inline)) __attribute__((nodebug))
+#else
+#define SWIFT_INLINE_THUNK_ATTRIBUTES
+#endif
+
 #if defined(DEBUG) && __has_attribute(used)
 // Additional 'used' attribute is used in debug mode to make inline thunks
 // accessible to LLDB.
 #define SWIFT_INLINE_THUNK_USED_ATTRIBUTE __attribute__((used))
 #else
 #define SWIFT_INLINE_THUNK_USED_ATTRIBUTE
 #endif
-#else
-#define SWIFT_INLINE_THUNK_ATTRIBUTES
-#define SWIFT_INLINE_THUNK_USED_ATTRIBUTE
-#endif
 
 /// The `SWIFT_INLINE_THUNK` macro is applied on the inline function thunks in
 /// the header that represents a C/C++ Swift module interface generated by the