Jay Foad d6bca8c71a [KnownBits] Make clmul optimal (#177916) ...

Normally I would push back on implementations that take O(BitWidth)
steps, but since the corresponding APInt function already takes
O(BitWidth) steps, this KnownBits function is no worse in that regard.

Also add the same early-out optimization to both the APInt function and
the KnownBits function.

2026-01-26 13:51:25 +00:00

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