Artem Dergachev 5657486854 [analyzer] Use faster hashing (MD5) in CloneDetector. ...

This replaces the old approach of fingerprinting every AST node into a string,
which avoided collisions and was simple to implement, but turned out to be
extremely ineffective with respect to both performance and memory.

The collisions are now dealt with in a separate pass, which no longer causes
performance problems because collisions are rare.

Patch by Raphael Isemann!

Differential Revision: https://reviews.llvm.org/D22515

llvm-svn: 279378

2016-08-20 17:35:53 +00:00

6.1 KiB

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