diff options
| -rw-r--r-- | mem.c | 13 |
1 files changed, 9 insertions, 4 deletions
@@ -447,10 +447,15 @@ coalesce(Fn *fn) if (i->op == Oblit0) if (slot(&s, &off0, i->arg[0], fn, sl)) if (slot(&s0, &off1, i->arg[1], fn, sl)) - if (s->s == s0->s && off0 < off1) { - sz = rsval((i+1)->arg[0]); - assert(sz >= 0); - (i+1)->arg[0] = INT(-sz); + if (s->s == s0->s) { + if (off0 < off1) { + sz = rsval((i+1)->arg[0]); + assert(sz >= 0); + (i+1)->arg[0] = INT(-sz); + } else if (off0 == off1) { + *i = (Ins){.op = Onop}; + *(i+1) = (Ins){.op = Onop}; + } } } vfree(bl); |