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Orignial commit message: [crankshaft] No need to rely on the @@hasInstance protector. In Crankshaft we can actually do an abstract interpretation of the @@hasInstance lookup when optimizing instanceof and then use the normal machinery to protect the result instead of relying on the global @@hasInstance protector cell for optimizations. This recovers the 100x performance drop in Node.js v7 reported in https://github.com/nodejs/node/issues/9634. This patch should be easily back-mergable to Node.js v7. BUG=v8:5640 R=yangguo@chromium.org,franzih@chromium.org Committed: https://crrev.com/08377af957b1602396ebf3e11ae000f15ed09333 Cr-Commit-Position: refs/heads/master@{#41059} PR-URL: https://github.com/nodejs/node/pull/9730 Fixes: https://github.com/nodejs/node/issues/9634 Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com>