[PATCH] Cleanup asm constraints in atomic operations

John Baldwin jhb at FreeBSD.org
Fri Sep 2 12:41:31 PDT 2005

On Friday 02 September 2005 03:32 pm, John Baldwin wrote:
> alc@ brought to my attention a while back that while gcc allows one to use
> the '+' constraint modifier to collapse identical input and output operands
> that are in registers, it is only allowed for registers and not for memory
> operands.  The patch below removes uses of the '+' modifier in conjunction
> with memory operands in the atomic operations for alpha, amd64, i386, and
> powerpc.  Please test and let me know if there are any regressions.



John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org

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