Re: [RFC] Merge softirq, local_irq_count, local_bh_count

From: Andrew Morton (andrewm@uow.edu.au)
Date: Sat Jul 29 2000 - 01:18:59 EST


Russell King wrote:
>
> They shouldn't do - GCC should realise that code like:
>
> int this_cpu = 0;
>
> array_access[this_cpu].foo = 0;
> array_access[this_cpu].bar = 1;
>
> can be optimised.

Generally, gcc fails to do this. If you declare `this_cpu' as `const
int' then gcc gets it right. This is particularly significant with
2.7.2.3.

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