Craig Topper 517334bdb8 [TableGen] Add maps from Write/ReadType to the parent WriteRes/ReadAdvance. NFC (#123876) ...

Use this to improve performance of SubtargetEmitter::findWriteResources
and SubtargetEmitter::findReadAdvance. Now we can do a map lookup
instead of a linear search through all WriteRes/ReadAdvance records.
    
This reduces the build time of RISCVGenSubtargetInfo.inc on my
machine from 43 seconds to 10 seconds.

2025-01-22 13:41:42 -08:00

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