On Thu, 23 Aug 2007, Segher Boessenkool wrote:
>
> This simply isn't true. The compiler *can* combine asm stuff:
Please Segher, just shut up.
The combining, which I've mentioned *multiple*times* is
if (atomic_read(&x) <= 1)
and dammit, if that doesn't result in a *single* instruction, the code
generation is pure and utter crap.
It should result in
cmpl $1,offset(reg)
and nothing else. And there is no way in hell you are doing that with
"atomic_read()" being inline asm.
So can you now just go away?
Linus
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