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a2b43e3e
2017 Apr 13
2
Improve the performance of JamCRC
Lldb relies heavily on crc when loading shared libraries. The existing
implementation is quite slow as it computes a byte at a time, creating a
long dependency chain.
Unfortunately the polynomial is not the same as the one implemented by x86
processors in SSE 4.2, but there's another way to make it faster by using
more lookup tables.
Zlib implements this, but rather than require zlib, I