2 Commits

Author	SHA1	Message	Date
Scott McMurray	ec9e35618d	Also get add nuw from uN::checked_add	2024-06-23 13:29:06 -07:00
Scott McMurray	986d9f104b	Make checked ops emit *unchecked* LLVM operations where feasible ... For things with easily pre-checked overflow conditions -- shifts and unsigned subtraction -- write then checked methods in such a way that we stop emitting wrapping versions of them. For example, today <https://rust.godbolt.org/z/qM9YK8Txb> neither ```rust a.checked_sub(b).unwrap() ``` nor ```rust a.checked_sub(b).unwrap_unchecked() ``` actually optimizes to `sub nuw`. After this PR they do.	2024-04-18 18:11:21 -07:00