[Webkit-unassigned] [Bug 152963] New: It should be possible to run liveness over registers without also tracking Tmps

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=152963

            Bug ID: 152963
           Summary: It should be possible to run liveness over registers
                    without also tracking Tmps
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fpizlo at apple.com

Tracking Tmps is expensive, tracking Regs is cheap.  We sometimes need to compute liveness of Regs only.  That should be cheap and not expensive.

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