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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Making --with-wide-int the default
Date: Fri, 16 Oct 2015 13:12:14 +0300
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To: David Kastrup <dak@gnu.org>
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> From: David Kastrup <dak@gnu.org>
> Cc: lekktu@gmail.com,  eggert@cs.ucla.edu,  emacs-devel@gnu.org
> Date: Fri, 16 Oct 2015 11:26:27 +0200
> 
> > What is "non-native" about 'long long int'?
> 
> Register lengths and opcodes.  You need two registers for every
> operation, and several opcodes.

Yes, and the compiler already implements that in the most efficient
way possible.