Some module not found in OpenSparcT2 verilog RTL

I am not able find some the modules instantiated in MCU of the OpenSparcT2 core. A few of them are mentioned below . it would be great help if someone can help me getting this modules.

'cl_sc1_l1hdr_8x'
'dff'
'cl_sc1_msff_8x'
'cl_u1_buf_32x'
'cl_u1_nand3_8x'
'cl_u1_inv_8x'
'cl_u1_aoi22_4x'
'cl_u1_buf_8x'
'cl_u1_oai22_4x'
'cl_u1_inv_16x'
'cl_u1_nand2_16x'
'cl_u1_nor3_4x'
'cl_u1_nand2_8x'
'cl_u1_buf_16x'
'cl_u1_nor2_16x'
'cl_u1_inv_32x'