[Webkit-unassigned] [Bug 146099] New: Control Flow Profiler should keep execution counts of basic blocks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146099

            Bug ID: 146099
           Summary: Control Flow Profiler should keep execution counts of
                    basic blocks
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: saambarati1 at gmail.com
                CC: basile_clement at apple.com, benjamin at webkit.org,
                    burg at cs.washington.edu, fpizlo at apple.com,
                    ggaren at apple.com, joepeck at webkit.org,
                    jonowells at apple.com, mark.lam at apple.com,
                    mmirman at apple.com, msaboff at apple.com,
                    nvasilyev at apple.com, oliver at apple.com,
                    timothy at apple.com, utatane.tea at gmail.com

This will prevent us from optimizing op_profile_control_flow compilation in the baseline and DFG because we will no
longer be able to change op_profile_control_flow into a no-op if the basic block executed. This will definitely slow down the control flow profiler a bit.

But, having execution counts for basic blocks will allow the inspector to do some badass stuff. So we should do it.

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