t.Key.Size_ <= abi.MapMaxKeyBytes && (t.IndirectKey() || t.KeySize != uint8(t.Key.Size_)) {
		throw("key size wrong")
	}
	if t.Elem.Size_ > abi.MapMaxElemBytes && (!t.IndirectElem() || t.ValueSize != uint8(goarch.PtrSize)) ||
		t.Elem.Size_ <= abi.MapMaxElemBytes && (t.IndirectElem() || t.ValueSize != uint8(t.Elem.Size_)) {
		throw("elem size wrong")
	}
	if t.Key.Align_ > abi.MapBucketCount {
		throw("key align too big")

	}
	mt.Flags = 0
	if ktyp.Size_ > abi.MapMaxKeyBytes {
		mt.KeySize = uint8(goarch.PtrSize)
		mt.Flags |= 1 // indirect key
	} else {
		mt.KeySize = uint8(ktyp.Size_)
	}
	if etyp.Size_ > abi.MapMaxElemBytes {
		mt.ValueSize = uint8(goarch.PtrSize)
		mt.Flags |= 2 // indirect value
	} else {
		mt.MapType.ValueSize = uint8(etyp.Size_)
	}
	mt.MapType.BucketSize = uint16(mt.Bucket.Size_)

		// compute size info like hashmap.c does.
		indirectKey, indirectVal := false, false
		if keysize > abi.MapMaxKeyBytes {
			keysize = int64(d.arch.PtrSize)
			indirectKey = true
		}
		if valsize > abi.MapMaxElemBytes {
			valsize = int64(d.arch.PtrSize)
			indirectVal = true
		}

		// Construct type to represent an array of BucketSize keys
		keyname := d.nameFromDIESym(keytype)