Bug 143733

Summary:	Rationalize DFG OSR exit liveness
Product:	WebKit	Reporter:	Filip Pizlo <fpizlo>
Component:	JavaScriptCore	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	All
OS:	All
Bug Depends on:	143734, 143735, 143736
Bug Blocks:

Description Filip Pizlo 2015-04-14 15:53:18 PDT

Currently we keep things that are dead-in-DFG alive for OSR by using Phantoms.  Phantoms are fine as a backend hack in the DFG, but they are really hard to preserve soundly through serious compiler transformations.  We should rationalize this so that we have fewer bugs to fix.

Comment 1 Filip Pizlo 2015-05-14 12:29:28 PDT

This is done!