• jyan's avatar
    S390: [Interpreter] Fix incorrect frame walking in arguments create stubs · e7a23425
    jyan authored
    Port 40f34541
    
    Original commit message:
    
        The previous approach taken by FastNew[Sloppy,Strict,Rest]ArgumentsStub
        looked at the function slot in order to skip stub frames
        and find the JS frame. However, stub frames do not have a
        function slot (in fact their fixed frame ends one slot
        before the JS frame's function slot). Therefore, if this
        location in the stub frame happens to have the function
        object the create arguments stubs won't skip this frame
        correctly.
    
        Replace this approach with one where the stub is
        specialized to either skip a frame if required (since
        there will only ever be one extra frame on Ignition
        the loop approach isn't necessary).
    
    R=rmcilroy@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
    BUG=
    
    Review-Url: https://codereview.chromium.org/1978823002
    Cr-Commit-Position: refs/heads/master@{#36252}
    e7a23425
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