Craig Topper d65e8ee507 [RISCV] Add more cmov isel patterns to handle seteq/ne with a small non-zero immediate. ...

Similar to our free standing setcc patterns, we can use ADDI to
subtract the immediate from the other operand. Then the cmov
can check if the result is zero or non-zero.

Reviewed By: mundaym

Differential Revision: https://reviews.llvm.org/D95169

2021-01-22 14:51:22 -08:00

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