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From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: Efficiency of code generated by Ada compilers
Date: Sat, 14 Aug 2010 15:58:06 +0200
Organization: Ada At Home
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Date: 2010-08-14T15:58:06+02:00
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Le Sat, 14 Aug 2010 12:47:27 +0200, Brian Drummond  =

<brian_drummond@btconnect.com> a =E9crit:
> In a single cycle, one small corner of the Rekursiv would perform both=
  =

> range
> checks and type checks,

Range check... and type check. Just real vs integer or was their some ki=
nd  =

of typing in integers as well ? Also may be character, BCD and the like =
?

> The entire  Rekursiv was
> about 70k gates + memory, next to a contemporary RISC of around 20-30k=
.

70 000 gates, that's light.

> There was much talk then of "bridging the semantic gap" between high  =

> level
> languages and the low level operations in hardware.

Yes. This matter seems gone now, or else nobody care any more or else  =

nobody believe in it any more.

Thanks for all of your testimony/account, was very interesting :)

-- =

There is even better than a pragma Assert: a SPARK --# check.
--# check C and WhoKnowWhat and YouKnowWho;
--# assert Ada;
--  i.e. forget about previous premises which leads to conclusion
--  and start with new conclusion as premise.