Xilinx/amd fpga have a CE pin on many of its flops (if not all?). Not sure for altera/intel but would be surprised they wouldn't have.
Note that people talk about Verilog or VHDL as "RTL languages". That is not correct - these languages allow hardware designs using any style to be modeled. But sticking with RTL is strongly encouraged. A design that uses the output from one part of a circuit as a clock to another part, for example, is not RTL. This might cause problems when moving from one FPGA to another or to an ASIC.