Method hash

ir/function.cpp:133–159

BasicBlock Function::sink_bb("#sink");

unsigned Function::FnDecl::hash() const {
  GenHash hash;

  function<void(const Type&)> hash_ty = [&](const Type &ty) {
    if (ty.isPtrType()) {
      hash.add((uint8_t)0x42);
    } else if (dynamic_cast<const VoidType*>(&ty)) {
      hash.add((uint8_t)0xEF);
    } else if (auto agg = ty.getAsAggregateType()) {
      hash.add((uint8_t)0x11);
      for (unsigned i = 0, e = agg->numElementsConst(); i != e; ++i) {
        if (!agg->isPadding(i))
          hash_ty(agg->getChild(i));
      }
    } else {
      uint8_t data[2] = { uint8_t(0x33+ty.isFloatType()), (uint8_t)ty.bits() };
      hash.add(data, sizeof(data));
    }
  };

  for (auto &[ty, attrs] : inputs) {
    hash_ty(*ty);
  }
  hash_ty(*output);
  hash.add(is_varargs * 32);
  return hash();
}

expr Function::getTypeConstraints() const {
  expr t(true);