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#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <stdarg.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "parse.h"
#include "opt.h"
Bb *mkbb(Cfg *cfg)
{
static int nextbbid = 0;
Bb *bb;
bb = zalloc(sizeof(Bb));
bb->id = nextbbid++;
bb->in = mkbs();
bb->out = mkbs();
lappend(&cfg->bb, &cfg->nbb, bb);
return bb;
}
int addnode(Cfg *cfg, Bb *bb, Node *n)
{
switch (exprop(n)) {
case Ojmp:
case Ocjmp:
lappend(&bb->nl, &bb->nnl, n);
lappend(&cfg->fixjmp, &cfg->nfixjmp, n);
lappend(&cfg->fixblk, &cfg->nfixblk, n);
return 1;
break;
default:
lappend(&bb->nl, &bb->nnl, n);
break;
}
return 0;
}
Cfg *mkcfg(Node **nl, int nn)
{
Cfg *cfg;
Bb *bb;
int i;
cfg = zalloc(sizeof(Cfg));
for (i = 0; i < nn; i++) {
switch (nl[i]->type) {
case Nlbl:
if (bb->nnl)
bb = mkbb(cfg);
lappend(&bb->lbls, &bb->nlbls, nl[i]->lbl.name);
break;
case Nexpr:
if (addnode(cfg, bb, nl[i]))
bb = mkbb(cfg);
break;
case Ndecl:
break;
default:
die("Invalid node type %s in mkcfg", nodestr(nl[i]->type));
}
}
return cfg;
}
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