[Webkit-unassigned] [Bug 160755] New: DFG's flushForTerminal() needs to add PhantomLocals for bytecode live locals.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160755

            Bug ID: 160755
           Summary: DFG's flushForTerminal() needs to add PhantomLocals
                    for bytecode live locals.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mark.lam at apple.com

If the DFG sees that an inlined function will result in an OSR exit every time, it will treat all downstream blocks as dead.  However, it still needs to keep locals that are alive in the bytecode alive for the compiled function so that those locals are properly written to the stack by the OSR exit ramp.  The existing code neglected to do this.  Will fix.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.webkit.org/pipermail/webkit-unassigned/attachments/20160810/145033c7/attachment.html>