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#include "lisc.h"
#include <ctype.h>
char debug['Z'+1] = {
['P'] = 0, /* parsing */
['C'] = 0, /* call lowering */
['I'] = 0, /* instruction selection */
['L'] = 0, /* liveness */
['S'] = 0, /* spilling */
['R'] = 0, /* reg. allocation */
};
void
dumpts(Bits *b, Tmp *tmp, FILE *f)
{
int t;
fprintf(f, "[");
for (t=Tmp0; t<BITS*NBit; t++)
if (BGET(*b, t))
fprintf(f, " %s", tmp[t].name);
fprintf(f, " ]\n");
}
int
main(int ac, char *av[])
{
char *o, *f;
FILE *inf;
Fn *fn;
int n, dbg;
dbg = 0;
if (ac > 1 && strncmp(av[1], "-d", 2) == 0) {
if (av[1][2] == 0) {
if (ac <= 2)
goto Usage;
o = av[2];
f = av[3];
} else {
o = &av[1][2];
f = av[2];
}
for (; *o; o++)
if (isalpha(*o)) {
debug[toupper(*o)] = 1;
dbg = 1;
}
} else
f = av[1];
if (!f || strcmp(f, "-") == 0)
inf = stdin;
else {
inf = fopen(f, "r");
if (!inf) {
fprintf(stderr, "cannot open '%s'\n", f);
goto Usage;
}
}
fn = parse(inf);
fclose(inf);
if (debug['P']) {
fprintf(stderr, "\n> After parsing:\n");
printfn(fn, stderr);
}
isel(fn);
fillrpo(fn);
fillpreds(fn);
filllive(fn);
fillcost(fn);
fillphi(fn);
spill(fn);
rega(fn);
fillrpo(fn);
assert(fn->rpo[0] == fn->start);
for (n=0;; n++)
if (n == fn->nblk-1) {
fn->rpo[n]->link = 0;
break;
} else
fn->rpo[n]->link = fn->rpo[n+1];
if (!dbg)
emitfn(fn, stdout);
else
fprintf(stderr, "\n");
freeall();
exit(0);
Usage:
fprintf(stderr, "usage: %s [-d PCILSR] {file.ssa, -}\n", av[0]);
exit(1);
}
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