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move usage computation in filluse()

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This commit is contained in:
Quentin Carbonneaux 2015-11-11 21:21:54 -05:00
parent d3f1cd9483
commit a3a1fc0c80
4 changed files with 54 additions and 14 deletions
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16
lisc/parse.c
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@ -299,18 +299,15 @@ expect(int t)
}
static Ref
tmpref(char *v, int use)
tmpref(char *v)
{
int t;
for (t=Tmp0; t<ntmp; t++)
if (strcmp(v, tmp[t].name) == 0)
goto Found;
return TMP(t);
vgrow(&tmp, ++ntmp);
strcpy(tmp[t].name, v);
Found:
tmp[t].ndef += !use;
tmp[t].nuse += use;
return TMP(t);
}
@ -322,7 +319,7 @@ parseref()
switch (next()) {
case TTmp:
return tmpref(tokval.str, 1);
return tmpref(tokval.str);
case TNum:
c = (Con){.type = CNum, .val = tokval.num};
strcpy(c.label, "");
@ -509,7 +506,7 @@ parseline(PState ps)
closeblk();
return PLbl;
}
r = tmpref(tokval.str, 0);
r = tmpref(tokval.str);
expect(TEq);
w = parsecls(&ty);
op = next();
@ -547,10 +544,6 @@ DoOp:
arg[i] = parseref();
if (req(arg[i], R))
err("invalid instruction argument");
if (op == -1)
if (rtype(arg[i]) == RTmp)
if (!tmp[arg[i].val].phi)
tmp[arg[i].val].phi = r.val;
i++;
t = peek();
if (t == TNL)
@ -572,7 +565,6 @@ DoOp:
curi++;
return PIns;
} else {
tmp[r.val].phi = r.val;
phi = alloc(sizeof *phi);
phi->to = r;
phi->wide = w;