Messages in this thread | | | Date | Thu, 17 Mar 2011 09:06:41 +0000 | From | Al Viro <> | Subject | Re: question oh macros and gcc's intelligence |
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On Thu, Mar 17, 2011 at 08:48:57AM +0100, Oliver Neukum wrote: > Hi, > > if I write: > > if (le16_to_cpu(p) == CONST) a(); > > is gcc smart enough to convert CONST to le16 and do > a simple comparison?
On little-endian - certainly, on big-endian - forget it. if (p == cpu_to_le16(CONST)) would obviously work on any architecture and yes, it would be a comparison with compile-time constant.
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