Please help me about the tcl command trick of Design compiler

[yanzixuan]

In one block, all registers are all driven by "clk", but some registers(Type A) are control by "clk_en" by Enable pin.
Some is there any dc command to find all the (type A) registers?
bow

 

[lostinxlation]

try report_transitive_fanout from clk_en.