UVM Sequence macros

Based on the requirement few macros can be used while writing a sequence.

Macros	Description
`uvm_do (seq/item)	On calling this macro, create, randomize and send to the driver will be executed
`uvm_do_with (seq/item, constraints)	It is the same as `uvm_do but additionally, constraints can be defined while randomizing
`uvm_do_pri(seq/item, priority)	It is the same as `uvm_do but additionally, the mentioned priority is considered.
`uvm_do_pri_with(seq/item, constraints, priority).	It is a combination of `uvm_do_with and `uvm_do_pri
`uvm_create(seq/item)	This creates a sequence or item.
`uvm_send(seq/item)	It directly sends seq/item without creating and randomizing it. So, make sure the seq/item is created and randomized first.
`uvm_rand_send(seq/item)	It directly sends a randomized seq/item without creating it. So, make sure the seq/item is created first.
`uvm_rand_send_with(seq/item)	It directly sends a randomized seq/item with constraints but without creating it. So, make sure seq/item is created first
`uvm_send_pri(seq/item, Priority)	It is the same as `uvm_send but additionally. priority is also considered.
`uvm_rand_send_pri(seq/item, Priority)	It is combination of `uvm_rand_send and `uvm_send_pri
`uvm_rand_send_pri_with(seq/item, Priority)	It is a combination of `uvm_rand_send_with and `uvm_send_pri.

Note:

`uvm_do macro call does not invoke pre_body and post_body methods
A sequence macro call is not recommended to use because it takes more time to execute on the simulator which results in slow simulation.

UVM Sequence macro examples

`uvm_do example

class my_sequence extends uvm_sequence #(seq_item);
  `uvm_object_utils(my_sequence)
  
   function new (string name = "my_sequence")
     super.new(name);
   endfunction

   task body();
     `uvm_do(req);
   endtask
endclass

class my_sequence extends uvm_sequence #(seq_item);
  `uvm_object_utils(my_sequence)
  
   function new (string name = "my_sequence")
     super.new(name);
   endfunction

   task body();
     `uvm_do(seq1); // calling seq1
     `uvm_do(seq2); // calling seq2
   endtask
endclass

`uvm_do_with example

class my_sequence extends uvm_sequence #(seq_item);
  `uvm_object_utils(my_sequence)
  
   function new (string name = "my_sequence")
     super.new(name);
   endfunction

   task body();
     `uvm_do_with(req, {req.<variable> == 0;}); // any constraint
   endtask
endclass

`uvm_create and `uvm_send example

class my_sequence extends uvm_sequence #(seq_item);
  `uvm_object_utils(my_sequence)
  
   function new (string name = "my_sequence")
     super.new(name);
   endfunction

   task body();
     `uvm_create(req);
     assert(req.randomize());
     `uvm_send(req);
   endtask
endclass

`uvm_rand_send example

class my_sequence extends uvm_sequence #(seq_item);
  `uvm_object_utils(my_sequence)
  
   function new (string name = "my_sequence")
     super.new(name);
   endfunction

   task body();
     `uvm_create(req);
     `uvm_rand_send(req);
   endtask
endclass

UVM Tutorials