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Date: Sun, 08 Oct 2017 21:39:57 -0700 (PDT)
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To: vijay.ac.kumar@oracle.com
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Subject: Re: [PATCH v3 3/5] sparc64: SPARC optimised fls function
From: David Miller <davem@davemloft.net>
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From: Vijay Kumar <vijay.ac.kumar@oracle.com>
Date: Fri,  6 Oct 2017 10:54:51 -0600

> +#define LXCNT_O0_G2	\
> +	.word	0x85b002e8
> +
> +	.text
> +	.register	%g2, #scratch
> +	.register	%g3, #scratch
> +
> +ENTRY(NG4fls)
> +	LXCNT_O0_G2	!lzcnt	%o0, %g2

Agreed with others that you should name this LZCNT_* instead of
LXCNT_*.