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Date: Sun, 27 Dec 2009 00:28:00 -0000
From: Dan Kruchinin <dan.kruchinin@gmail.com>
To: gcc-help@gcc.gnu.org
Subject: Re: [BUG?] GCC inline assembler optimization issue
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> You need a memory clobber here.
> You need to add a clobber to Operand 1.

I added "memory" to the clobber list of spin_unlock, but it doesn't help.
I still have the same problem.