Bug 96707 - DFG: Dead GetButterfly's shouldn't be subject to CSE
Summary: DFG: Dead GetButterfly's shouldn't be subject to CSE
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P2 Normal
Assignee: Filip Pizlo
Keywords: InRadar
Depends on:
Reported: 2012-09-13 16:54 PDT by Filip Pizlo
Modified: 2012-09-13 18:44 PDT (History)
6 users (show)

See Also:

the patch (2.69 KB, patch)
2012-09-13 16:57 PDT, Filip Pizlo
no flags Details | Formatted Diff | Diff
the patch (9.20 KB, patch)
2012-09-13 17:08 PDT, Filip Pizlo
oliver: review+
Details | Formatted Diff | Diff

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Description Filip Pizlo 2012-09-13 16:54:32 PDT
Doing so is both pointless (it extends the live range of an operation without eliminating redundancy) and incorrect (it scrazzles the ref counts).  Patch forthcoming.

Comment 1 Filip Pizlo 2012-09-13 16:57:29 PDT
Created attachment 164002 [details]
the patch

Still polishing it but this should do the trick.
Comment 2 Filip Pizlo 2012-09-13 17:08:22 PDT
Created attachment 164003 [details]
the patch
Comment 3 Filip Pizlo 2012-09-13 18:44:20 PDT
Landed in http://trac.webkit.org/changeset/128541