Emit location information but do not generate debug info in the output.
This is useful in cases where the backend wants to track source locations for instructions without actually emitting debug info for them (e.g., when -Rpass is used).
LimitedDebugInfo
Emit only debug info necessary for generating line number tables (-gline-tables-only).
FullDebugInfo
Limit generated debug info to reduce size (-fno-standalone-debug).
This emits forward decls for types that could be replaced with forward decls in the source code. For dynamic C++ classes type info is only emitted into the module that contains the classe's vtable. Generate complete debug info.