Reviewers: Yang,
Message:
Created Revert of Array.prototype.unshift builtin improvements
Description:
Revert of Array.prototype.unshift builtin improvements (patchset #3
id:40001 of
https://codereview.chromium.org/1311343002/ )
Reason for revert:
https://codereview.chromium.org/1315823004/
Original issue's description:
Array.prototype.unshift builtin improvements
Moving unshift to ElementAccessor and increasing the range of arguments
handled directly in C++, namely directly supporting
FastDoubleElementsKind.
This should yield a factor 19 speedup for unshift on fast double arrays.
BUG=
Committed: https://crrev.com/bf6764e6c1197e50ae148755488307a423b1d9b4
Cr-Commit-Position: refs/heads/master@{#30347}
[email protected]
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=
Please review this at https://codereview.chromium.org/1311363003/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+59, -75 lines):
M src/builtins.cc
M src/elements.h
M src/elements.cc
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