Bug 99262

Summary: DFG structure check hoisting should attempt to ignore side effects and make transformations that are sound even in their presence
Product: WebKit Reporter: Filip Pizlo <fpizlo>
Component: JavaScriptCoreAssignee: Filip Pizlo <fpizlo>
Status: RESOLVED FIXED    
Severity: Normal CC: barraclough, ggaren, mark.lam, mhahnenberg, msaboff, oliver
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Bug Depends on:    
Bug Blocks: 98606, 99260    
Attachments:
Description Flags
work in progress
none
the patch oliver: review+

Description Filip Pizlo 2012-10-13 23:10:48 PDT 
This will simplify the phase and enable hoisting of effectful structure and array checks.
Comment 1 Filip Pizlo 2012-10-14 00:33:43 PDT 
Created attachment 168577 [details]
work in progress

Still investigating performance issues.
Comment 2 Filip Pizlo 2012-10-14 12:37:07 PDT 
Created attachment 168587 [details]
the patch
Comment 3 Filip Pizlo 2012-10-14 13:23:37 PDT 
Landed in http://trac.webkit.org/changeset/131270