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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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16
lisc/isel.c
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@ -118,7 +118,7 @@ sel(Ins i, Fn *fn)
r0 = i.arg[n];
cpy[n].s = -1;
s = rslot(r0, fn);
if (s >= 0) {
if (s != -1) {
r0 = newtmp(fn);
i.arg[n] = r0;
cpy[n].r = r0;
@ -172,7 +172,7 @@ sel(Ins i, Fn *fn)
case OStorew:
case OStoreb:
case OStores:
if (cpy[1].s >= 0) {
if (cpy[1].s != -1) {
i.arg[1] = SLOT(cpy[1].s);
cpy[1].s = -1;
}
@ -183,7 +183,7 @@ sel(Ins i, Fn *fn)
case OLoaduh:
case OLoadsb:
case OLoadub:
if (cpy[0].s >= 0) {
if (cpy[0].s != -1) {
i.arg[0] = SLOT(cpy[0].s);
cpy[0].s = -1;
}
@ -237,7 +237,7 @@ Emit:
}
for (n=0; n<2; n++)
if (cpy[n].s >= 0)
if (cpy[n].s != -1)
emit(OAddr, 1, cpy[n].r, SLOT(cpy[n].s), R);
}
@ -638,7 +638,7 @@ isel(Fn *fn)
for (n=Tmp0; n<fn->ntmp; n++)
fn->tmp[n].spill = -1;
fn->stk0 = 0;
fn->slot = 0;
/* lower arguments */
for (b=fn->start, i=b->ins; i-b->ins < b->nins; i++)
@ -691,8 +691,8 @@ isel(Fn *fn)
diag("isel: invalid alloc size");
sz = (sz + n-1) & -n;
sz /= 4;
fn->tmp[i->to.val].spill = fn->stk0;
fn->stk0 -= sz;
fn->tmp[i->to.val].spill = fn->slot;
fn->slot += sz;
*i = (Ins){.op = ONop};
}
@ -702,7 +702,7 @@ isel(Fn *fn)
for (a=0; p->blk[a] != b; a++)
assert(a+1 < p->narg);
s = rslot(p->arg[a], fn);
if (s >= 0) {
if (s != -1) {
p->arg[a] = newtmp(fn);
emit(OAddr, 1, p->arg[a], SLOT(s), R);
}