> > No, that just says the asm uses the value of the pointer.
> > Not what it points to.
>
> Err, no, it is *exactly* what it points to that is important here and
> you're telling the compiler that the instruction will read that much
> memory through the pointer.
You need to use an "m" constraint for that.
A 'register' constraint just requires the value of the address
to be valid.
Look at the asm output from the example code I posted.
David
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