On Wed, Feb 22, 2017 at 3:57 PM, Christopher Li <sparse@xxxxxxxxxxx> wrote:
>
> I think dropping to zero has some thing to do with get rid of
> the side effect cost. So it possible the cost can be dropping.
No, I think the zero is just a bug, introduced in commit 8376ab091a
("sparse: Fix __builtin_safe_p for pure and const functions").
I might be missing something, but I think Luc's patch is fine.
Linus
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