Bug 171198 - op_spread should profile its operand
Summary: op_spread should profile its operand
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-04-23 10:45 PDT by Saam Barati
Modified: 2017-04-23 10:45 PDT (History)
10 users (show)

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Description Saam Barati 2017-04-23 10:45:30 PDT 
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).