Re: [PATCH][RFC] getting rid of stupid loop in BUG()

[H. Peter Anvin]

David Miller wrote:
> 
> Another issue is that if you have a conditional trap instruction on
> your cpu, and you try the __label__ trick, GCC no longer converts:
> 
> 	BUG_ON(test)
> 
> into just a:
> 
> 	set condition codes;
> 	conditional_trap;
> 
> sequence because the "stuff" inside the basic block is something
> more than just the __builtin_trap().
> 
> The holy grail would be being able to get the perfect conditional
> trap sequence, plus the annotations in a seperate section.

I think that would require a custom gcc builtin, which we might be able
to ask the gcc folks for...

	-hpa
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