[Webkit-unassigned] [Bug 150657] New: Air::spillEverything() should try to replace tmps with spill slots without using registers whenever possible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150657

            Bug ID: 150657
           Summary: Air::spillEverything() should try to replace tmps with
                    spill slots without using registers whenever possible
    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

This is necessary for lowering patchpoints and stackmaps, where the number of operands may be greater than the number of registers, and we're happy to accept stack slots instead of registers.

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