sam/libqbe
1
0
Fork 0
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions

stop using OXxx1 and use new OLoad

Browse source
This commit is contained in:
Quentin Carbonneaux 2016-02-18 19:40:40 -05:00
parent 7922b259d9
commit 97cfdc309e
6 changed files with 34 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

23
lisc/mem.c
View file

@ -29,9 +29,8 @@ memopt(Fn *fn)
if (u->type != UIns)
goto NextIns;
l = u->u.ins;
if (l->op < OLoadl || l->op > OLoadub)
if (l->op < OStorel || l->op > OStoreb
|| req(i->to, l->arg[0]))
if (!isload(l->op)
&& (!isstore(l->op) || req(i->to, l->arg[0])))
goto NextIns;
}
/* get rid of the alloc and replace uses */
@ -40,8 +39,15 @@ memopt(Fn *fn)
ue = &t->use[t->nuse];
for (u=t->use; u!=ue; u++) {
l = u->u.ins;
if (OStorel <= l->op && l->op <= OStoreb) {
l->cls = l->op == OStorel ? Kl : Kw;
if (isstore(l->op)) {
if (l->op == OStores)
l->cls = Kd;
else if (l->op == OStored)
l->cls = Kd;
else if (l->op == OStorel)
l->cls = Kl;
else
l->cls = Kw;
l->op = OCopy;
l->to = l->arg[1];
l->arg[1] = R;
@ -51,8 +57,7 @@ memopt(Fn *fn)
/* try to turn loads into copies so we
* can eliminate them later */
switch(l->op) {
case OLoadl:
l->cls = Kl;
case OLoad:
l->op = OCopy;
break;
case OLoadsw:
@ -62,8 +67,8 @@ memopt(Fn *fn)
break;
default:
/* keep l->cls */
a = l->op - OLoad;
l->op = OExt + a;
a = l->op - OLoadsw;
l->op = OExtsw + a;
break;
}
}