Loops in Flow Graphs Loops are important because programs spend most of their time executing them Optimizations that improve the performance of loops can have a significant impact. CS308 Compiler Theory 2Loops in Flow Graphs • Loops are important because programs spend most of their time execut ing t hem • Optimizations that improve the performance of loops can have a si ifi t i t ignifican t impac t. CS308 Compiler Theory 2