[LifetimeSafety] Investigate +161% compile time hit for AST/ByteCode/Interp.cpp

[usx95]

File:
https://github.com/llvm/llvm-project/blob/main/clang/lib/AST/ByteCode/Interp.cpp

Per-file compile-time regressions:
http://llvm-compile-time-tracker.com/compare_clang.php?from=128eacfaba78162c944c073270db02e237b7b851&to=fddb8174bad28a12830236c05eeb981fab2b2a9b&stat=instructions%3Au&sortBy=relative-difference

[llvmbot]

@llvm/issue-subscribers-clang-temporal-safety

Author: Utkarsh Saxena (usx95)

File: https://github.com/llvm/llvm-project/blob/main/clang/lib/AST/ByteCode/Interp.cpp

Per-file compile-time regressions:
http://llvm-compile-time-tracker.com/compare_clang.php?from=128eacfaba78162c944c073270db02e237b7b851&to=fddb8174bad28a12830236c05eeb981fab2b2a9b&stat=instructions%3Au

[usx95]

#165789 would fix this file. It brings down regression from 150% to 2%.