Re: [patch 4/21] fix ARCH_HAS_PREFETCH
H. Peter Anvin (firstname.lastname@example.org)
Wed, 14 Aug 2002 12:41:04 -0700
Rogier Wolff wrote:
>>Bullsh*t. It can legitimately transform it into:
>> i = N;
> Right! But people are confusing "practise", "published interface", and
> "spec" again.
> Published interface in this case is that gcc will not optimize an empty
> loop away, as it is often used to generate a timing loop.
Yes. This is a gcc-specific wart, a bad idea from the start, and
apparently one which has caught up with them to the point that they've
had to abandon it.
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