tree 5ee1cfc2c5941b05c1f4de561f669f29a6eb3535
parent d76e2695c4ec76523667872f4abb65c3646967ce
author Max Moroz <mmoroz@chromium.org> 1532466164 +0000
committer Copybara-Service <copybara-worker@google.com> 1616739469 -0700

[libFuzzer] Handle unstable edges by disregarding unstable edges

Summary:
Added a new mode within flag -handle_unstable for new unstable handling algorithm that does the following:
    When an edge is shown as unstable, copy to UnstableCounters the value 0.
    During ApplyUnstableCounters we copy back the value 0 to ModuleInline8bitCounters if the edge was unstable.

This way we would be ignoring completely features that were collected through non-determinism.
Unstable hits would be counted as if it never hit.

Reviewers: metzman, Dor1s, kcc, morehouse

Reviewed By: metzman, morehouse

Subscribers: delcypher, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D49684

llvm-svn: 337853
GitOrigin-RevId: 8db0befc6d34c6db33ce8210faccdb5da6c2f670