Xinlong Chen b670265b58
[DAG] ComputeKnownBits - set low bit to zero for ADD(X,X) (#186461)
ADD(X,X) is equivalent to SHL(X,1), so bit[0] is always zero.

This allows downstream folds like `and(add(x,x), 1) -> 0`.

Fixes #186091
2026-03-23 16:10:36 +00:00
..
2025-07-15 13:22:33 -04:00
2026-03-23 13:14:17 +00:00