[PATCH] D16419: Use std::piecewise_constant_distribution instead of ad-hoc binary search.

[Ivan Krasin via llvm-commits]

krasin created this revision.
krasin added a reviewer: aizatsky.
krasin added subscribers: kcc, llvm-commits.

Fix the issue with the most recently discovered unit receiving much less attention.

Note: I had to change the seed for one test to make it pass. Alternatively,
the number of runs could be increased. I believe that the average time of
'foo' discovery is not increased, just seed=1 was particularly convenient
for the previous PRNG scheme used.

http://reviews.llvm.org/D16419

Files:
  lib/Fuzzer/FuzzerInternal.h
  lib/Fuzzer/FuzzerLoop.cpp
  lib/Fuzzer/test/fuzzer-traces.test

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