Bug 130380

Summary:

V8 regexp spends most time in operationGetById

Product:

WebKit

Reporter:

Michael Saboff <msaboff>

Component:

JavaScriptCore

Assignee:

Michael Saboff <msaboff>

Status:

RESOLVED FIXED

Severity:

Normal

Priority:

Version:

528+ (Nightly build)

Hardware:

All

OS:

All

Attachments:

Description	Flags
Patch	fpizlo: review+

Description Michael Saboff 2014-03-17 18:31:21 PDT

Profiling shows that operationGetById is the hottest function when running V8 regexp

Comment 1 Michael Saboff 2014-03-17 19:04:26 PDT

Created attachment 226999 [details]
Patch

When V8 regexp is run from the command line, this patch nets a 2% performance improvement.

Using the JS performance test script, this patch didn't noticeably improve performance.  This is likely due to longer running code being optimized by the DFG.

Comment 2 Michael Saboff 2014-03-17 20:46:50 PDT

Committed r165797: <http://trac.webkit.org/changeset/165797>