[Webkit-unassigned] [Bug 147243] New: jsc-tailcall: Repatching tail calls as jump should depend on the opcode, not the JS CallLinkInfo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147243

            Bug ID: 147243
           Summary: jsc-tailcall: Repatching tail calls as jump should
                    depend on the opcode, not the JS CallLinkInfo
    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: basile_clement at apple.com
            Blocks: 146477

Patch forthcoming. The apparent source of failures on ARM devices for https://bugs.webkit.org/show_bug.cgi?id=146484 looks to be that we are patching NearCalls as jump when the CallLinkInfo tells us we are a tail call.

However even for a tail call, the slow path will still have an actual call (and not jump) opcode: we should be patching based on that information instead.

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