This paper describes a new approach to register-pressure-aware instruction scheduling, using Ant Colony Optimization (ACO) . ACO is nature-inspired optimization technique that researchers have successfully applied NP-hard sequencing problems like the Traveling Salesman Problem (TSP) and its derivatives. In this work, we describe an algorithm for solving long-standing compiler problem of balanci...

A large register set can be exploited by keeping variables and constants in registers instead of in memory. Hardware register windows and compiletime or link-time global register allocation are ways to do this. A measure of the effectiveness of any of these register management schemes is how thoroughly they manage to remove loads and stores. This measure also must count extra loads and stores t...

Ibn 'Abdul-Wahhab took the verses revealed to speak about the blasphemers and applied them to the Muslims. This verse means: [Who is more astray than the one who performs supplication (du'a') to [worship] other than Allah; the one other than Allah he supplicates to will not answer his du'a'.]

This paper considers the problem of rotating a formation of spacecraft from one orientation to another, using an optimal amount of fuel. The formation is constrained to have the same shape at the beginning and end of a maneuver. However, the shape is unconstrained throughout the maneuver. This implies that to optimize fuel, each spacecraft travels in a straight line, from its beginning to end p...