[Webkit-unassigned] [Bug 56292] New: Should try to avoid popping return address in leaf functions.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun Mar 13 23:31:08 PDT 2011


https://bugs.webkit.org/show_bug.cgi?id=56292

           Summary: Should try to avoid popping return address in leaf
                    functions.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: barraclough at apple.com


Presently we preserve the return address in the CallFrameHeader in the RegisterFile,
since we don't allow any recursion on the machine stack. We should fairly trivially
be able to avoid the extra push/pop of the return address in leaf functions.

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