diff options
| -rw-r--r-- | spill.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/spill.c b/spill.c index 0742caa..c1599c0 100644 --- a/spill.c +++ b/spill.c @@ -309,7 +309,7 @@ void spill(Fn *fn) { Blk *b, *s1, *s2, *hd, **bp; - int j, l, t, k, s, lvarg[2]; + int j, l, t, k, lvarg[2]; uint n; BSet u[1], v[1], w[1]; Ins *i; @@ -404,11 +404,9 @@ spill(Fn *fn) continue; } bszero(w); - s = -1; if (!req(i->to, R)) { assert(rtype(i->to) == RTmp); t = i->to.val; - s = tmp[t].slot; if (bshas(v, t)) bsclr(v, t); else { @@ -442,13 +440,6 @@ spill(Fn *fn) bsset(v, t); if (j-- <= 0) bsset(w, t); - else if (!lvarg[n]) { - /* recycle the slot of - * i->to when possible - */ - if (tmp[t].slot == -1) - tmp[t].slot = s; - } break; } bscopy(u, v); @@ -456,10 +447,7 @@ spill(Fn *fn) for (n=0; n<2; n++) if (rtype(i->arg[n]) == RTmp) { t = i->arg[n].val; - if (bshas(v, t)) { - if (tmp[t].slot == s) - tmp[t].slot = -1; - } else { + if (!bshas(v, t)) { /* do not reload if the * argument is dead */ |