[Webkit-unassigned] [Bug 171198] New: op_spread should have an ArrayProfile
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Sun Apr 23 10:45:30 PDT 2017
https://bugs.webkit.org/show_bug.cgi?id=171198
Bug ID: 171198
Summary: op_spread should have an ArrayProfile
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: sbarati at apple.com
CC: benjamin at webkit.org, fpizlo at apple.com,
ggaren at apple.com, gskachkov at gmail.com,
jfbastien at apple.com, keith_miller at apple.com,
mark.lam at apple.com, msaboff at apple.com,
ticaiolima at gmail.com, utatane.tea at gmail.com
If we had a good idea of what type of array was being spread, we could emit a CheckStructure in such a way that we could emit more efficient machine code for the spread. We'd also be able to prove it could be spread fast (e.g, not observable iterator protocol).
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