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    Revert of Type Feedback Vector lives in the closure (patchset #2 id:40001 of... · 3f36e658
    mvstanton authored
    Revert of Type Feedback Vector lives in the closure (patchset #2 id:40001 of https://codereview.chromium.org/1668103002/ )
    
    Reason for revert:
    Must revert for now due to chromium api natives issues.
    
    Original issue's description:
    > Type Feedback Vector lives in the closure
    >
    > (RELAND: the problem before was a missing write barrier for adding the code
    > entry to the new closure. It's been addressed with a new macro instruction
    > and test. The only change to this CL is the addition of two calls to
    > __ RecordWriteCodeEntryField() in the platform CompileLazy builtin.)
    >
    > We get less "pollution" of type feedback if we have one vector per native
    > context, rather than one for the whole system. This CL moves the vector
    > appropriately.
    >
    > We rely more heavily on the Optimized Code Map in the SharedFunctionInfo. The
    > vector actually lives in the first slot of the literals array (indeed there is
    > great commonality between those arrays, they can be thought of as the same
    > thing). So we make greater effort to ensure there is a valid literals array
    > after compilation.
    >
    > This meant, for performance reasons, that we needed to extend
    > FastNewClosureStub to support creating closures with literals. And ultimately,
    > it drove us to move the optimized code map lookup out of FastNewClosureStub
    > and into the compile lazy builtin.
    >
    > The heap change is trivial so I TBR Hannes for it...
    > Also, Yang has had a look at the debugger changes already and approved 'em. So he is TBR style too.
    > And Benedikt reviewed it as well.
    >
    > TBR=hpayer@chromium.org, yangguo@chromium.org, bmeurer@chromium.org
    >
    > BUG=
    >
    > Committed: https://crrev.com/bb31db3ad6de16f86a61f6c7bbfd3274e3d957b5
    > Cr-Commit-Position: refs/heads/master@{#33741}
    
    TBR=bmeurer@chromium.org
    # Skipping CQ checks because original CL landed less than 1 days ago.
    NOPRESUBMIT=true
    NOTREECHECKS=true
    NOTRY=true
    BUG=
    
    Review URL: https://codereview.chromium.org/1670813005
    
    Cr-Commit-Position: refs/heads/master@{#33766}
    3f36e658
access-builder.cc 12.2 KB