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Jaideep Bajwa authored
Port 1edb46cc Original Commit Message: This improves the general Array constructor call performance (w/o usable AllocationSite feedback) in TurboFan by ~2x, i.e. for example invoking the Array constructor like this var a = Array.call(undefined, n); instead of var a = Array(n); such that the CallIC doesn't know that it's eventually calling the Array constructor. It also thus changes the single argument Array constructor to always return holey arrays. Previously the single argument case for the Array constructor was somehow trying to dynamically detect 0 and in that case returned a packed array instead of a holey one. That adds quite a lot of churn, and doesn't seem to be very useful, especially since this might lead to unnecessary feedback pollution later. R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com BUG= LOG=N Change-Id: I6a50ae016556ed38a7d7ca5546b575ca25e91b4a Reviewed-on: https://chromium-review.googlesource.com/586641Reviewed-by: Junliang Yan <jyan@ca.ibm.com> Commit-Queue: Jaideep Bajwa <bjaideep@ca.ibm.com> Cr-Commit-Position: refs/heads/master@{#46909}
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