Function rustc_codegen_llvm::debuginfo::create_scope_map::compute_mir_scopes

pub fn compute_mir_scopes<'ll, 'tcx>(
    cx: &CodegenCx<'ll, 'tcx>,
    instance: Instance<'tcx>,
    mir: &Body<'tcx>,
    debug_context: &mut FunctionDebugContext<&'ll DIScope, &'ll DILocation>
)

Produces DIScope DIEs for each MIR Scope which has variables defined in it.