Re: What is the ratio of programs sizes CISC versus RISC

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Article #12051

#12051

From: Wm E Davidsen Jr
Date: Thu, 13 Jun 1991 16:32

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In article <pb.676737175@atperf.idca.tds.philips.nl> pb@idca.tds.philips.nl (Peter Brouwer) writes:
| Who can give me some information about the ratio of program sizes of RISC
| versus CISC. Code size (text) and total executable file size, both 32
bit systems, both unix flavors.

Several files compiled in Xenix/386 (SCO C), Sun4 (Sun C), and MIPS
(Ultrix C). All use -O.

	386	Sun4	R3000	386	Sun4	R3000
	Code	Code	Code	File	File	File

file1	56036	 65536	 81920	 71716	 81920	 98304	zoo 2.10 alpha
file2	43560	 49152	 69632	 55368	 65536	 86016	zoo 2.01
file3	50692	 65536	 90122	 64708	 73728	106496	zip 0.82
file4	96468	163840	188416	107620	172032	200704	ksh 88e
file5	76944	114688	151552	 96416	139264	176128	memacs 3.9p3

Draw any conclusions you want, I've never seen a program which wasn't
15-25% larger in RISC, but that doesn't seem to a good reason for
choosing a machine.
-- 
bill davidsen	(davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
        "Most of the VAX instructions are in microcode,
         but halt and no-op are in hardware for efficiency"

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From: davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr)
Newsgroups: comp.arch
Subject: Re: What is the ratio of programs sizes CISC versus RISC
Message-ID: <3429@crdos1.crd.ge.COM>
Date: 13 Jun 91 16:32:32 GMT
References: <pb.676737175@atperf.idca.tds.philips.nl>
Reply-To: davidsen@crdos1.crd.ge.com (bill davidsen)
Organization: GE Corp R&D Center, Schenectady NY
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