2 Commits

Author	SHA1	Message	Date
Noah Goldstein	d81db0e5f5	[KnownBits] Implement knownbits lshr/ashr with exact flag ... The exact flag basically allows us to set an upper bound on shift amount when we have a known 1 in `LHS`. Typically we deduce exact using knownbits (on non-exact incoming shifts), so this is particularly impactful, but may be useful in some circumstances. Closes #84254	2024-03-11 15:51:07 -05:00
Noah Goldstein	f19d9e1617	[KnownBits] Add test for computing more information for lshr/ashr with exact flag; NFC	2024-03-11 15:51:06 -05:00