80     pub inst: InputSourceInst,
90 pub enum InputSourceInst {  enum
106 impl InputSourceInst {  implementation
111             &InputSourceInst::UniqueUse(inst, output_idx)  in as_inst()
112             | &InputSourceInst::Use(inst, output_idx) => Some((inst, output_idx)),  in as_inst()
113             &InputSourceInst::None => None,  in as_inst()
1579                     InputSourceInst::None  in get_value_as_source_or_const()
1587                         InputSourceInst::UniqueUse(src_inst, result_idx)  in get_value_as_source_or_const()
1589                         InputSourceInst::Use(src_inst, result_idx)  in get_value_as_source_or_const()
1610                         InputSourceInst::UniqueUse(src_inst, 0)  in get_value_as_source_or_const()
1612                         InputSourceInst::None  in get_value_as_source_or_const()
1616             _ => InputSourceInst::None,  in get_value_as_source_or_const()