[Webkit-unassigned] [Bug 145850] New: Simplify things like CompareEq(@x, @x) and Branch(constant) more eagerly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=145850

            Bug ID: 145850
           Summary: Simplify things like CompareEq(@x, at x) and
                    Branch(constant) more eagerly
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (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'm seeing cases where these sort of float past our optimizations.  It's all because of silly omissions, like AI not handling CompareEq(@x, @x) and CFG simplification not being run in SSA.

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