Bug 81583 - Prediction propagation for UInt32ToNumber incorrectly assumes that outs outcome does not change throughout the fixpoint
Summary: Prediction propagation for UInt32ToNumber incorrectly assumes that outs outco...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-03-19 16:09 PDT by Filip Pizlo
Modified: 2012-03-19 16:38 PDT (History)
0 users

See Also:


Attachments
the patch (1.53 KB, patch)
2012-03-19 16:25 PDT, Filip Pizlo
msaboff: review+
Details | Formatted Diff | Diff

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Description Filip Pizlo 2012-03-19 16:09:19 PDT
That was true before the arithmetic node flags backward-flow was combined with the forward-flow of prediction propagaiton.  But it's not true anymore.

Patch forthcoming.
Comment 1 Filip Pizlo 2012-03-19 16:25:44 PDT
Created attachment 132709 [details]
the patch
Comment 2 Filip Pizlo 2012-03-19 16:38:49 PDT
Landed in http://trac.webkit.org/changeset/111269