[clang] [llvm] [Dwarf] Support heterogeneous DW_{OP,AT}s needed for AMDGPU CFI (PR #153883)

[Scott Linder via llvm-commits]

slinder1 wrote:

Ping

Since this touched some includes I also confirmed it is benign in terms of compile time impact http://llvm-compile-time-tracker.com/compare.php?from=21a5729b87a6c2e271334049fa28af10fa12f0c7&to=782cde16ae3d58ff50f8ec3b304771189cf54e10&stat=instructions%3Au

https://github.com/llvm/llvm-project/pull/153883