| Date | Mon, 23 Jul 2007 09:23:46 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH 7/8] i386: bitops: Kill needless usage of __asm__ __volatile__ |
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Satyam Sharma wrote: > From: Satyam Sharma <ssatyam@cse.iitk.ac.in> > > [7/8] i386: bitops: Kill needless usage of __asm__ __volatile__ > > Another oddity I noticed in this file. The semantics of __volatile__ > when used to qualify inline __asm__ are that the compiler will not > (1) elid, or, (2) reorder, or, (3) intersperse, our inline asm with > the rest of the generated code. >
"asm volatile" does not mean that at all. It only guarantees (1), and only then if the asm is ever reachable.
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