Craig Topper 048458f94c [RISCV] Add no NaN support to lowerFMAXIMUM_FMINIMUM.
Using the nonans FMF and the DAG.isKnownNeverNaN on the inputs.

Reviewed By: fakepaper56

Differential Revision: https://reviews.llvm.org/D156748
2023-08-01 09:51:24 -07:00
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