4.15.5 [10] <4.5, 4.11, 4.13> If this instruction already exists in a legacy ISA, explain how it would be executed in a modern processor like AMD Barcelona.
The last problem in this exercise assumes that each use of the new instruction replaces the given number of original instructions, that the replacement can be made once in the given number of original instructions, and that each time the new instruction is executed the given number of extra stall cycles is added to the program’s execution time:
