[clang] [Clang] Overflow Pattern Exclusions (PR #100272)

[Eli Friedman via cfe-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM

The other thing you could do is modify ScalarExprEmitter::EmitCompare... if it sees an overflow pattern, it passes that down as an argument to the visit of the add.  But I guess given the current structure of the code, that gets very complicated, so just storing the bit is probably easier.

https://github.com/llvm/llvm-project/pull/100272