Craig Topper e05fdab125 [TableGen] Add predicate checks to isel patterns for default HwMode. ...

As discussed in D100691 and based on D100889.

I removed the ModeChecks cache which provides little value. Reduced
from three loops to two. Used ArrayRef to pass the Predicate to
AppendPattern to avoid needing to construct a vector for single
mode. Used SmallVector to avoid heap allocation constructing
DefaultCheck for the in tree targets the use it.

Reviewed By: kparzysz

Differential Revision: https://reviews.llvm.org/D101240

2021-04-27 10:46:51 -07:00

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