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wip on new stack slots (emit, spill)

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This commit is contained in:
Quentin Carbonneaux 2015-09-29 22:25:49 -04:00
parent ae158a5c40
commit e2174da2f1
6 changed files with 59 additions and 35 deletions
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22
lisc/emit.c
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@ -83,8 +83,10 @@ Next:
break;
case RSlot:
Slot: {
struct { int i:14; } x = {ref.val}; /* fixme, HACK */
fprintf(f, "%d(%%rbp)", -4 * x.i);
struct { int i:14; } x = {ref.val}; /* fixme */
assert(NAlign == 3);
assert(fn->slot >= x.i);
fprintf(f, "%d(%%rbp)", -4 * (fn->slot - x.i));
break;
}
case RCon:
@ -289,19 +291,15 @@ eins(Ins i, Fn *fn, FILE *f)
static int
framesz(Fn *fn)
{
int i, o, a, f;
int i, o, f;
assert(NAlign == 3);
for (i=0, o=0; i<NRClob; i++)
o ^= 1 & (fn->reg >> rclob[i]);
f = 0;
for (i=NAlign-1, a=1<<i; i>=0; i--, a/=2)
if (f == 0 || f - a == fn->svec[i])
f = fn->svec[i];
a = 1 << (NAlign-2);
o *= a;
while ((f + o) % (2 * a))
f += a - f % a;
return f * 16 / (1 << (NAlign-1));
f = fn->slot;
if (f & 3)
f += 4 - (f & 3);
return 4*f + 8*o;
}
void