ack/mach/proto/ncg/main.c
1989-02-02 16:31:51 +00:00

89 lines
1.6 KiB
C

#ifndef NORCSID
static char rcsid[] = "$Header$";
#endif
#include "param.h"
#include "tables.h"
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*
* Author: Hans van Staveren
*/
char *progname;
extern char startupcode[];
extern unsigned codegen();
int maxply=1;
#ifndef NDEBUG
int Debug=0;
char *strtdebug="";
#endif
main(argc,argv) char **argv; {
register unsigned n;
extern unsigned cc1,cc2,cc3,cc4;
unsigned ggd();
progname = argv[0];
while (--argc && **++argv == '-') {
switch(argv[0][1]) {
#ifndef NDEBUG
case 'd':
if ((Debug = argv[0][2]) != 0) {
Debug -= '0';
if (argv[0][3] == '@') {
Debug = 0;
strtdebug = &argv[0][4];
}
} else
Debug++;
break;
#endif
#ifdef TABLEDEBUG
case 'u':
case 'U':
initlset(argv[0]+1);
break;
#endif
case 'p':
maxply = atoi(argv[0]+2);
break;
case 'w': /* weight percentage for size */
n=atoi(argv[0]+2);
cc1 *= n;
cc2 *= 50;
cc3 *= (100-n);
cc4 *= 50;
n=ggd(cc1,cc2);
cc1 /= n;
cc2 /= n;
n=ggd(cc3,cc4);
cc3 /= n;
cc4 /= n;
break;
default:
error("Unknown flag %c",argv[0][1]);
}
}
if (argc > 2)
error("Usage: %s [ EMfile ] [ asfile ]",progname);
in_init(argc >= 1 ? argv[0] : (char *) 0);
out_init(argc >= 2 ? argv[1] : (char *) 0);
readcodebytes();
itokcost();
in_start();
codegen(startupcode,maxply,TRUE,MAXINT,0);
error("Bombed out of codegen");
}
unsigned ggd(a,b) register unsigned a,b; {
register unsigned c;
do {
c = a%b; a=b; b=c;
} while (c!=0);
return(a);
}