Bug 63218

Summary: DFG JIT - remove machine type guarantees from graph
Product: WebKit Reporter: Gavin Barraclough <barraclough>
Component: JavaScriptCoreAssignee: Gavin Barraclough <barraclough>
Status: RESOLVED FIXED    
Severity: Normal    
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
The patch sam: review+

Description Gavin Barraclough 2011-06-22 18:51:19 PDT 
The DFG JIT currently makes assumptions about the types of machine registers that certain nodes will be loaded into.  This will be broken as we generate nodes to produce both integer and double code paths.  Remove int<->double conversions nodes.  This design decision also gave rise to multiple types of constant nodes, requiring separate handling for each type.  Merge these back into JSConstant.
Comment 1 Gavin Barraclough 2011-06-22 18:53:44 PDT 
Created attachment 98292 [details]
The patch
Comment 2 Gavin Barraclough 2011-06-23 14:04:53 PDT 
Fixed in r89611