[Libre-soc-isa] [Bug 678] New: cntlzd is needed (from v3.1)

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=678

            Bug ID: 678
           Summary: cntlzd is needed (from v3.1)
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Specification
          Assignee: lkcl at lkcl.net
          Reporter: lkcl at lkcl.net
                CC: libre-soc-isa at lists.libre-soc.org
   NLnet milestone: ---

see bug #671 for elwidth overrides.

by defining cntlzw as "half of the elwidth override" we need the
cntlzd variant which is *not* run at half the elwidth, it's run
at XLEN

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