965b598b2a
Normalize common kinds of DWARF sub-expressions to make debug info encoding a bit more compact: DW_OP_constu [X < 32] -> DW_OP_litX DW_OP_constu [all ones] -> DW_OP_lit0, DW_OP_not (64-bit only) Differential revision: https://reviews.llvm.org/D51640 llvm-svn: 341457