Wang Pengcheng 211abe38d8 [SelectionDAG] Add space-optimized forms of OPC_CheckComplexPat (#73310) ...

We record the usage of each `ComplexPat` and sort the `ComplexPat`s
by usage.

For the top 8 `ComplexPat`s, we will emit a `OPC_CheckComplexPatN`
to save one byte.

Overall this reduces the llc binary size with all in-tree targets by
about 89K.

2024-01-11 15:28:12 +08:00

1.1 KiB

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