[Webkit-unassigned] [Bug 19821] New: Merge the instruction pair (less, jfalse)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=19821

           Summary: Merge the instruction pair (less, jfalse)
           Product: WebKit
           Version: 526+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cwzwarich at uwaterloo.ca
                CC: mjs at apple.com


The pair (less, jfalse) is 1.61% of SunSpider instruction pairs. Merging them
into a new opcode jnless is generally a win, but is a large regression on the
regexp-dna and nbody tests.


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