Bug 96707

Summary: DFG: Dead GetButterfly's shouldn't be subject to CSE
Product: WebKit Reporter: Filip Pizlo <fpizlo>
Component: JavaScriptCoreAssignee: Filip Pizlo <fpizlo>
Status: RESOLVED FIXED    
Severity: Normal CC: barraclough, fpizlo, ggaren, mhahnenberg, msaboff, oliver
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Attachments:
Description Flags
the patch
none
the patch oliver: review+

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.

<rdar://problem/12296311>
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