}
		wantPrinted := test.printed
		if rlconv(enc) != wantPrinted {
			t.Errorf("%s string mismatch: have %s, want %s",
				test.printed, rlconv(enc), wantPrinted)
		}
	}
}

func TestRegIndex(t *testing.T) {
	tests := []struct {
		regFrom int
		regTo   int
	}{
		{REG_AL, REG_R15B},
		{REG_AX, REG_R15},
		{REG_M0, REG_M7},
		{REG_K0, REG_K7},
		{REG_X0, REG_X31},