Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!oberon!polyslo!cquenel
From: cquenel@polyslo.CalPoly.EDU (56 more school days)
Newsgroups: comp.arch
Subject: Re: i860 Dhrystones
Keywords: Ghreenstones
Message-ID: <9610@polyslo.CalPoly.EDU>
Date: 18 Mar 89 23:16:51 GMT
Reply-To: cquenel@polyslo.CalPoly.EDU (56 more school days)
Organization: Blue Blaze Irregulars
Lines: 25
References:

In article <6326@cbmvax.UUCP> jesup@cbmvax.UUCP (Randell Jesup) writes:
>     Actually, I think the statement "Greenhills C" was the giveaway.
We use Greenhills C here at Commodore for Amiga OS work, and got bitten recently
>because the compiler was set up with the "dhrystone" optimizer turned on,
>without our knowing it.  This causes mis-aligned strcpy()s to bus-fault on
>68000, since it (a) assumes string sources AND destinations are ALWAYS word-
>aligned, and (b) inlines strcpy, even though in general greenhills doesn't
>do inlining.

	Ghreenstones  --

	The benchmark number corresponding to Dhrystones 1.1 run 
	through a "dhrystone" optimizing Greenhills compiler.  
	Known to be 2 to 3 times higher than it should be.

--chris

	(I didn't write this.  You can't sue me, I don't
	 have any money! P.S.  Greenhills deserves it.)

-- 
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\. ./  | Chris Quenelle (The First Lab Rat) cquenel@polyslo.calpoly.edu |  \. ./
 \ /   |                   Better Red than dead !                       |   \ / 
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