Bug 678

Summary: cntlzd is needed (from v3.1)
Product: Libre-SOC's first SoC Reporter: Luke Kenneth Casson Leighton <lkcl>
Component: SpecificationAssignee: Luke Kenneth Casson Leighton <lkcl>
Status: CONFIRMED ---    
Severity: enhancement CC: libre-soc-isa
Priority: ---    
Version: unspecified   
Hardware: PC   
OS: Linux   
See Also: https://bugs.libre-soc.org/show_bug.cgi?id=671
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Description Luke Kenneth Casson Leighton 2021-08-30 13:21:58 BST 
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