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Re: Insn for direct increment of memory?


On Saturday 24 September 2005 23:52, Paul Brook wrote:
> On Saturday 24 September 2005 23:35, Greg McGary wrote:
> > I'm working with a machine that has a memory-increment insn.  It's a
> > network-processor performance hack that allows no-latency accumulation
> > of statistical counters.  The insn sends the increment and address to
> > the memory controller which does the add, avoiding the usual
> > long-latency read-increment-write cycle.  I would like to persuade GCC
> > to emit this insn.  Maybe it could be done in the combiner?  Do any
> > GCC ports have this feature?
>
> It should just work if you have the appropriate movsi pattern/alternative.

I mean addsi3 of course.

Paul


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