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From: David Howells <dhowells@redhat.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: dhowells@redhat.com, mingo@elte.hu, tglx@linutronix.de,
       linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] X86: Optimise fls(), ffs() and fls64()
Date: Fri, 26 Mar 2010 17:42:05 +0000
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Linus Torvalds <torvalds@linux-foundation.org> wrote:

> Where did you find that "doesn't modify its output" thing? It's not true. 
> The truth is that the destination is undefined. Just read the dang Intel 
> documentation, it's very clearly stated right there.

Hmmm...  My ancient Borland Assembler dead-tree manual doesn't mention that.

David