How to shift left 4bit signal without making register

[Altera_Forum]

Hi 

I need to create component witch work like shift register for 4 bit signal . How can I do that?

[Altera_Forum]

Hi, 

 Got a favourite language? In VHDL you could do something like:  b <= b(2 downto 0) & '0';  assuming b is defined as a four bit std_logic_vector.  Mark.

[Altera_Forum]

you could do that, but it wont work without registers. Its called a shift register for a reason...

[Altera_Forum]

--- Quote Start ---  you could do that, but it wont work without registers. Its called a shift register for a reason...  --- Quote End ---    Well, yeah, the behaviour of that line of code is entirely dependent on what's around it. On it's own it doesn't hold a value or anything. The OP's question was a little vague...  Mark.

[Altera_Forum]

Thank you for answer!!!