[Webkit-unassigned] [Bug 239878] New: [Speedometer] Avoid emitting stack checks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239878

            Bug ID: 239878
           Summary: [Speedometer] Avoid emitting stack checks
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: justin_michaud at apple.com

Let's try using a guard page instead of stack checks, and measure how much we hate ourselves. Removing these checks altogether appears to be 0.5% better on JS2 and might be 0.3% better on Speedometer.

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