Bug 182940 - ArrayProfile should profile when it loads from holes
Summary: ArrayProfile should profile when it loads from holes
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Saam Barati
URL:
Keywords:
Depends on: 182912
Blocks:
  Show dependency treegraph
 
Reported: 2018-02-19 14:00 PST by Saam Barati
Modified: 2018-02-19 14:03 PST (History)
11 users (show)

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Description Saam Barati 2018-02-19 14:00:13 PST
Then, if we're doing a GetByVal on an OriginalArray in the DFG, we can optimize when we load from holes for Int32/ArrayStorage and maybe double. Right now, we'll mark it as an out of bounds load. Then, we'll think these loads are effectful.