ICC进行check_library，以下missing是否可以忽略？判断依据是什么？

icc_shell> check_library

#BEGIN_XCHECK_LIBRARY

Logic Library:..2_max

Physical Library:../mw_lib/..2

check_library options:

Version:D-2010.03-ICC-SP5

Check date and time:Wed Feb 24 21:26:23 2016

List of logic library and file names

------------------------------------------------------------------------------

Logic library nameLogic library file name

------------------------------------------------------------------------------

..2_max../db/..2_max.db

------------------------------------------------------------------------------

#BEGIN_XCHECK_LOGICCELLS

Number of cells missing in logic library:3 (out of 350)

Information: List of cells missing in logic library (LIBCHK-210)

-------------------------------------------------------------------------

Cell nameCell typePhysical library

-------------------------------------------------------------------------

vddconCore..2

vssconCore..2

rowendCore..2

-------------------------------------------------------------------------

Information: List of physical only cells (LIBCHK-119)

-------------------------------------------------------------------------

Cell nameCell typePhysical library

-------------------------------------------------------------------------

feedthFiller..2

feedth2Filler..2

feedth4Filler..2

feedth8Filler..2

feedth16Filler..2

-------------------------------------------------------------------------

#END_XCHECK_LOGICCELLS

#BEGIN_XCHECK_PHYSICALCELLS

Number of cells missing in physical library:0 (out of 358)

#END_XCHECK_PHYSICALCELLS

#BEGIN_XCHECK_PINS

Number of cells with missing or mismatched pins in libraries:0

#END_XCHECK_PINS

Logic vs. physical library check summary:

Number of cells missing in logic library:3

Information: Logic library is INCONSISTENT with physical library (LIBCHK-220)

#END_XCHECK_LIBRARY

1

如果确认是physical only的单元，是可以忽略的。

如何确定呢?我的logic library为..2_max.db和..2_min.db
MW reference library为..2的Milkyway library是否设置正确呢?还是要加io单元库?（设计中有输入输出端口）
#BEGIN_XCHECK_LOGICCELLS

Number of cells missing in logic library:3 (out of 350)

Information: List of cells missing in logic library (LIBCHK-210)

-------------------------------------------------------------------------

Cell nameCell typePhysical library

-------------------------------------------------------------------------

vddconCore..2

vssconCore..2

rowendCore..2

-------------------------------------------------------------------------