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From: aiv@euraiv1.UUCP (Eelco van Asperen)
Newsgroups: comp.lang.c,comp.sys.ibm.pc
Subject: Wanted: Dr.Dobbs benchmarks for C-compilers
Message-ID: <593@euraiv1.UUCP>
Date: Thu, 24-Sep-87 07:46:09 EDT
Article-I.D.: euraiv1.593
Posted: Thu Sep 24 07:46:09 1987
Date-Received: Sun, 27-Sep-87 09:26:06 EDT
Organization: Erasmus University EF/AIV,Rotterdam,Netherlands
Lines: 38
Keywords: C,benchmarking compilers
Xref: mnetor comp.lang.c:4555 comp.sys.ibm.pc:8316

Has anyone got the source of the benchmarks that were used to test
C-compilers in the August 1986 issue of Dr.Dobbs ?  If I remember
corrrectly, there is a Dr.Dobbs conference on Compuserve but since
I'm not on Compuserve, perhaps some kind soul can ask around for me.
Since the C-war is getting hot with the advent of Turbo C and MS-C v5.0,
enough people might be interested to warrant posting of the benchmarks
and their results; they included some nice tests for optimizers.

[try the following with Turbo C;

main()
{
	int x[10];
	int i,j,k;

	for (i = 0; i < 10; i++)		/* dummy to assign some values to x[] */
		x[i] = i;

	i = x[5];		
	j = x[5];
	k = x[5];
	/* a *real* optimizer would load this once in a register and 
	*  then copy that to i,j and k; an even better optimizer would 
	*  not execute these statements at all since they're useless.
	*/
}

and compile with  tcc -S -O -G -Z -c test.c
]

Eelco van Asperen.

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