[Webkit-unassigned] [Bug 73727] New: MacroAssembler should support zeroing registers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73727

           Summary: MacroAssembler should support zeroing registers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: oliver at apple.com
                CC: oliver at apple.com, barraclough at apple.com,
                    zherczeg at webkit.org


Currently we use a mix of load ImmPtr(0) and xorPtr(r,r) to zero the contents of a register.  Given that these perform differently on different architectures it probably makes sense to simply have  a MacroAssembler API to zero a register that does the most efficient thing for the target platform.

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