Dead Code Elimination

Dead Code Elimination (DCE) [2] is an optimization technique to eliminate some variables not used at all. An overall construct generates 6 variables outside the loop according to the naive translation scheme. Since these control variables are often unused, and the methods are specialized methods known to the compiler--side effect free--we don't have any side effects from applying DCE with data flow analysis to them.

We assume that DCE should be applied after all optimization techniques we discussed earlier. Moreover, we assume we narrow the target of DCE for the HPJava optimization strategy. That is, for the moment, DCE will target only control variables and control scripts for overall constructs.