[Webkit-unassigned] [Bug 67985] New: SpeculativeJIT::shouldSpeculateInteger(NodeIndex, NodeIndex) should return false if either node can be double
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Sep 12 22:28:53 PDT 2011
https://bugs.webkit.org/show_bug.cgi?id=67985
Summary: SpeculativeJIT::shouldSpeculateInteger(NodeIndex,
NodeIndex) should return false if either node can be
double
Product: WebKit
Version: 528+ (Nightly build)
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: fpizlo at apple.com
SpeculativeJIT::shouldSpeculateInteger(NodeIndex, NodeIndex) currently returns false if either child node's prediction or static type is double. But that ignores cases where the prediction says that a node can be double, but is not necessarily always double. This is responsible for 3d-cube always failing speculation.
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