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SubjectRe: gcc inlining heuristics was Re: [PATCH -v7][RFC]: mutex: implement adaptive spinning
On Sun, Jan 11, 2009 at 04:21:03PM -0800, Linus Torvalds wrote:
> On Mon, 12 Jan 2009, Andi Kleen wrote:
> >
> > so at least least for this case it works. Your case also doesn't work
> > for me. So it looks like gcc didn't like something you did in your test
> > program.
> I very intentionally used _different_ types.
> If you use the same type, gcc will apparenrly happily say "hey, I can
> combine two variables of the same type with different liveness into the
> same variable".


> But that's not the interesting case.

Weird. I wonder where this strange restriction comes from. It indeed
makes this much less useful than it could be :/


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