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To: David Howells <dhowells@redhat.com>,
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From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Fri, 22 Jul 2016 17:52:47 +0200
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Subject: Re: [Ksummit-discuss] [TECH TOPIC] Compiler shopping list
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On 07/22/2016 12:41 PM, David Howells wrote:
> Are there additional things we can get the compiler to do for us?  Some
> things I've seen brought up:
> 
>  (1) Additional __atomic_*() ops could be useful.  Suggestions I've heard
>      include direct LL/SC support - though the compiler people don't seem so
>      keen on that.
> 
>  (2) -mmodel=kernel flag so that the compiler can optimise better for the
>      kernel memory model.

Some years ago (actually many) Linus proposed to have an endianess attribute to data
types, so that the compiler can do the bswap automatically. For some reason this
was never implemented, but this might be a good idea anyway.

e.g. 

unsigned long x[10] __attribute__(("bigendian"));