CVAL(DW_UT_compile, 1)
CVAL(DW_UT_type, 2)
CVAL(DW_UT_partial, 3)
CVAL(DW_UT_skeleton, 4)
CVAL(DW_UT_split_compile, 5)
CVAL(DW_UT_split_type, 6)