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    Revert of [stubs] Port SubStringStub to TurboFan (patchset #8 id:140001 of... · 10a801f1
    hablich authored
    Revert of [stubs] Port SubStringStub to TurboFan (patchset #8 id:140001 of https://codereview.chromium.org/2355793003/ )
    
    Reason for revert:
    Speculative revert because of stability problems
    
    Original issue's description:
    > [stubs] Port SubStringStub to TurboFan
    >
    > This ports the platform-specific SubStringStub to TurboFan.
    >
    > It also contains a minor bug-fix for the case when the requested substring
    > length equals the subject string length, but the start index is not equal to 0.
    > The old stub implementation returned the subject string, while the new
    > implementation calls into runtime, which finally results in a thrown exception.
    >
    > BUG=v8:5415
    >
    > Committed: https://crrev.com/49be31921536716706a6790fbbf9c346b975af16
    > Cr-Commit-Position: refs/heads/master@{#39653}
    
    TBR=ishell@chromium.org,bmeurer@chromium.org,jgruber@chromium.org
    # Not skipping CQ checks because original CL landed more than 1 days ago.
    BUG=v8:5415, chromium:649967
    NOPRESUBMIT=true
    NOTRY=true
    
    Review-Url: https://codereview.chromium.org/2365413002
    Cr-Commit-Position: refs/heads/master@{#39737}
    10a801f1
code-stubs-ppc.cc 188 KB