Speed of GNU compilers

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Article #53491

#53491

From: Stephen J. Roznowski
Date: Mon, 30 Dec 1991 01:29

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I was going some timings of the fcrypt routines that are a part of Crack,
and noticed the following. Comparing the default C compiler on the Suns
(in /usr/ucb/cc) to GNU C (version 1.40), the Sun compilers seem to come
out ahead, even with adding several of the optimization flags to gcc.

On a Sun3-180, cc -O3 was about 8% faster than gcc.

On a Sun4-75, cc -O3 was about 17% faster than gcc.

Does anyone care to explain why the Sun compilers seem to generate faster
code?

-- 
Stephen J. Roznowski	(sjr@afterlife.ncsc.mil)

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From: sjr@afterlife.ncsc.mil (Stephen J. Roznowski)
Newsgroups: gnu.gcc.help
Subject: Speed of GNU compilers
Message-ID: <1991Dec30.012934.10270@afterlife.ncsc.mil>
Date: 30 Dec 91 01:29:34 GMT
Organization: The Great Beyond
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