search for: 54680

..._TAG_class_type Tag = 47, Count = 27122, Ops = 108488, Name = DW_TAG_template_type_parameter Tag = 28, Count = 8491, Ops = 33964, Name = DW_TAG_inheritance Tag = 66, Count = 10930, Ops = 43720, Name = DW_TAG_rvalue_reference_type Tag = 16, Count = 54680, Ops = 218720, Name = DW_TAG_reference_type Tag = 23, Count = 624, Ops = 4992, Name = DW_TAG_union_type Tag = 4, Count = 5344, Ops = 42752, Name = DW_TAG_enumeration_type Tag = 11, Count = 360390, Ops = 1081170, Name = DW_TAG_lexical_block Tag =...

In r219010, I merged integer and string fields into a single header field. By reducing the number of metadata operands used in debug info, this saved 2.2GB on an `llvm-lto` bootstrap. I've done some profiling of DW_TAGs to see what parts of PR17891 and PR17892 to tackle next, and I've concluded that they will be insufficient. Instead, I'd like to implement a more aggressive plan,