[Webkit-unassigned] [Bug 150759] New: B3::LowerToAir should recognize Neg (i.e. Sub($0, value))

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150759

            Bug ID: 150759
           Summary: B3::LowerToAir should recognize Neg (i.e. Sub($0,
                    value))
    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

I don't think that the current trySub() lowering handles this.

We could handle it either using a second pattern match rule, or by recognizing the zero immediate inside trySub().

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