[PATCH] D23384: Use a byte array as an internal buffer of BitVector.

[David Majnemer via llvm-commits]

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Have you actually measured this to be a major improvement? Are there so many bits that the old way is a major bottleneck?
The BitVector is used for the CodeGen and optimizer, I'm not entirely convinced it makes sense to modify this generic datastructure so drastically for PDBs...


https://reviews.llvm.org/D23384