Re: gcc 3.0.2/kernel details (-O issue)

[J.A. Magallon]

On 20011222 Pavel Machek wrote:
>Hi!
>
>> > It is interesting that 2.2 can be done with -O. Also I'd expect
>> > errors during compilation and not silent crash...
>> 
>> Well, you certainly won't get errors, because compiler optimizations
>> shouldn't change expected syntax.
>> 
>> -O2 is the standard optimization level for the kernel; everything is
>> compiled via it.  When developers test their code, nuances that the
>> optimization introduce are accepted.  Removing the optimization may
>> break those expectations.  Thus the kernel requires it.
>
>Huh? Those expectations are *bugs*.
>
>Kernel will not link without optimalizations because it *needs*
>inlining. Any else dependency is a *bug*.
>									Pavel

Wouldn't it be better to mark such places with something like
#pragma inline, if gcc allows it, than relaying on gcc guesses about
inlining, or options activated in O2 ?

-- 
J.A. Magallon                           #  Let the source be with you...        
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