[Webkit-unassigned] [Bug 89940] New: JSC should try to make profiling deterministic because otherwise reproducing failures is nearly impossible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=89940

           Summary: JSC should try to make profiling deterministic because
                    otherwise reproducing failures is nearly impossible
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: fpizlo at apple.com
        Depends on: 89802


We should in future do more exploration of the stochastic profiling from https://bugs.webkit.org/show_bug.cgi?id=89802.  But without some sort of record-replay mode, this sort of randomness greatly increases the work required to narrow in on compiler bugs.

This bug is concerned with just removing the random part of http://trac.webkit.org/changeset/121215.  It still leaves the ability to periodically compute least-upper-bounds of value profiles by setting an artificially low execution count threshold.

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