Bug 131543

Summary: REGRESSION: Canvas/reuse:JSHeap got 0.82% worse around 2014-04-09 10:41:59
Product: WebKit Reporter: Dirk Schulze <krit>
Component: CanvasAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: rniwa, sam
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   

Description Dirk Schulze 2014-04-11 09:12:36 PDT 
Platform: mac-mavericks

WebKit: http://trac.webkit.org/log/?rev=167024&stop_rev=167016&verbose=on

Looking at the changes in question I wonder if it is the change to AffineTransform: http://trac.webkit.org/changeset/167017

AffineTransform is used a lot in Canvas. On each save() with a transform we create another AffineTransform on the stack. I could be absolutely wrong though and it is not this particular patch, or it doesn't even matter that much.