Re: [PATCH] Fix the cpumask rewrite

[James Bottomley]

On Sat, 2004-06-26 at 14:11, Linus Torvalds wrote:
> It seems the pa-risc optimizer for gcc is somehow broken. I just checked 
> on x86:
> 
> 	#define test_bit(x,y) \
> 	        (!!((1ul << x) & *(y)))
> 
> 	int test(unsigned long *a)
> 	{
> 	        while (test_bit(0, a));
> 	}

OK, this one definitely compiles to a non reaload loop on parisc.  I
concede we need the volatile.

James


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