NOP instruction compressing apparatus and method in a VLIW machine

A method of compressing instructions to be executed by a parallel processing computer, the method comprising:

• receiving instructions, by the parallel processing computer;
• generating, by the parallel processing computer, a bundle code to indicate whether an instruction group following a current instruction group is a no-operation (NOP) instruction group, and whether the current instruction group is terminated,
• wherein the bundle code is represented by two bits only, and
• wherein the bundle code indicates:
• a first code to indicate that the current instruction group is not terminated,
• a second code to indicate that the current instruction group is terminated and the next instruction group following the current instruction group is not a NOP instruction group,
• a third code to indicate that the current instruction group is terminated and the next instruction group following the current instruction group is a NOP instruction group, and
• a fourth code to indicate that the current instruction group is terminated and next two instruction groups following the current instruction group are NOP instruction groups;
• removing a NOP instruction group from the received instructions based on the generated bundle code, by the parallel processing computer;
• and
• including the generated bundle code in a remaining instruction which has not been removed, by the parallel processing computer.