tree c3f62160965e63d1a5940099f09f01ee663518ae
parent d2ccc599c7a31838752350ae927e41bc386df414
author Z Nguyen-Huu <duongn@microsoft.com> 1560260744 -0700
committer Commit Bot <commit-bot@chromium.org> 1560262685 +0000

Optimize hasOwnProperty for sealed, frozen objects.

Extend CodeStubAssembler::TryLookupElement() to handle frozen/sealed elements.
Also add some tests.

~2x perf improvement in micro-benchmark ObjectFreeze
Before:
TaggedTemplate
TaggedTemplate-Numbers(Score): 2.43
HasOwnProperty
HasOwnProperty-Numbers(Score): 2.94

After:
TaggedTemplate
TaggedTemplate-Numbers(Score): 4.77
HasOwnProperty
HasOwnProperty-Numbers(Score): 4.68

Bug: v8:6831
Change-Id: I6ce057fd812cd6a01e627125a51eefa439710274
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1650633
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62096}