Messages in this thread | | | Subject | Re: [RFC] LZO1X de/compression support | From | Bernd Petrovitsch <> | Date | Tue, 22 May 2007 23:24:42 +0200 |
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On Tue, 2007-05-22 at 14:38 +0530, Nitin Gupta wrote: [...] > On 5/18/07, Andrey Panin <pazke@donpac.ru> wrote: > > On 138, 05 18, 2007 at 03:28:31PM +0530, Nitin Gupta wrote: > > > + register const unsigned char *ip; > > > > register keyword is meaningless for today's compiler. > > But can we assume that gcc is being used? What if we use compiler for
Yes. If another compiler wants to compile the kernel, it must have implemented various widely used gcc extensions.
> which it does matter (can't give example for this...)?
The "register" keyword is and was always from start *at most* a hint to the C compiler to use a register for that variable (similar to "inline" BTW). So every C compiler is allowed to simply ignore the "register" for any reason - be it "not implemented" or "the compiler knows better". Trivial reason: Think of a function with 100 register variables.
Bernd -- Firmix Software GmbH http://www.firmix.at/ mobil: +43 664 4416156 fax: +43 1 7890849-55 Embedded Linux Development and Services
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