Function off_used_bits

ir/instr.cpp:3937–3945

DEFINE_AS_EMPTYACCESS(GEP)

static unsigned off_used_bits(const Value &v) {
  if (auto c = isCast(ConversionOp::SExt, v))
    return off_used_bits(c->getValue());

  if (auto ty = dynamic_cast<IntType*>(&v.getType()))
    return min(ty->bits(), 64u);

  return 64;
}

uint64_t GEP::getMaxGEPOffset() const {
  uint64_t off = 0;