Jay Foad 868da2ea93 [SelectionDAG] Remove an early-out from computeKnownBits for smin/smax ...

Even if we know nothing about LHS, it can still be useful to know that
smax(LHS, RHS) >= RHS and smin(LHS, RHS) <= RHS.

Differential Revision: https://reviews.llvm.org/D87145

2021-01-14 18:15:17 +00:00

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