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remove round-robin in ralloc (need preferences)

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Quentin Carbonneaux 2015-08-16 12:41:06 -04:00
parent e1725c0cdd
commit 27f4eae43e
1 changed files with 3 additions and 8 deletions
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11
lisc/rega.c
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@ -73,8 +73,7 @@ radd(RMap *m, int t, int r)
static Ref static Ref
ralloc(RMap *m, int t) ralloc(RMap *m, int t)
{ {
static int x; int r;
int n, r;
if (t < Tmp0) { if (t < Tmp0) {
assert(BGET(m->b, RBASE(t))); assert(BGET(m->b, RBASE(t)));
@ -86,13 +85,9 @@ ralloc(RMap *m, int t)
} else { } else {
r = tmp[t].hint; r = tmp[t].hint;
if (r == -1 || BGET(m->b, r)) if (r == -1 || BGET(m->b, r))
for (n=0;; x=(x+1)%NReg, n++) { for (r=RAX; BGET(m->b, r); r++)
if (n > NReg) if (r+1 == RAX+NReg)
diag("rega: no more regs"); diag("rega: no more regs");
r = RAX + x;
if (!BGET(m->b, r))
break;
}
radd(m, t, r); radd(m, t, r);
if (tmp[t].hint == -1) if (tmp[t].hint == -1)
tmp[t].hint = r; tmp[t].hint = r;