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bc227b65c2
For target descriptions with very large and very dense register files, TableGen can take an extremely long time to run. This change makes a dent in that (~15% in my measurements) by accelerating the single hottest operation with better data structures. I believe there's still a lot of room to make this even faster with more global changes that require replacing some of the existing datastructures in this area with bit vectors, but that's a more involved change and I wanted to get this simpler improvement in first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227562 91177308-0d34-0410-b5e6-96231b3b80d8 |
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