Re: [pcre-dev] doubtful code in compile_branch()

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Συντάκτης: Zack Weinberg
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Προς: pcre-dev
Αντικείμενο: Re: [pcre-dev] doubtful code in compile_branch()
On Thu, May 8, 2008 at 4:23 AM, Philip Hazel <ph10@???> wrote:
> On Wed, 7 May 2008, Zack Weinberg wrote:
>
>> Upward-growing stacks would help in the typical case but have their
>> own headaches (not least that very few CPUs are set up to do it).
>
> OK, thanks, so my question really is "why don't CPUs support upward
> growing stacks?" :-)


I don't know any good reason :-/ I would believe it's a case of
"someone in the dark ages made an arbitrary choice and everyone since
has copied it."

zw