Messages in this thread | | | Subject | Re: [PATCH GIT 0.6] make use of register variables & size_t | From | Arjan van de Ven <> | Date | Mon, 25 Apr 2005 22:50:09 +0200 |
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On Mon, 2005-04-25 at 11:50 -0700, Linus Torvalds wrote: > > On Mon, 25 Apr 2005, Matthias-Christian Ott wrote: > > > > But this makes, like "register", direct use of processor registers (it > > stores int arguments in eax, ebx, etc.). > > No. It make _unlike_ "register", direct use of processor registers. > > The "register" keyword does _not_ use processor registers. It's just > syntactic fluff, and tells the compiler exactly one thing: > > - that the compiler should warn if you take the address of such a thing. > > In addition, the compiler may generate code that takes it into account, > which most likely means _worse_ code than if it didn't take it into > account.
afaik gcc just otherwise ignores it entirely.
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