Optimization Using Partial Redundancy Elimination in SSA Form

Partial Redundancy Elimination in SSA

The SSAPRE algorithm for performing partial redundancy elimination based entirely on SSA form is presented. The algorithm is formulated based on a new conceptual framework, the fac-tored redundancy graph, for analyzing redundancy, and represents the rst sparse approach to the classical problem of partial redundancy elimination. At the same time, it provides new perspectives on the problem and o...

A Practical Improvement to the Partial Redundancy Elimination in SSA Form

Partial Redundancy Elimination using Lazy Code Motion

Anticipation-based partial redundancy elimination for static single assignment form

Partial redundancy elimination (PRE) is a program transformation that identifies and eliminates expressions that are redundant on at least one (but not necessarily all) execution paths of a program without increasing any path length. Chow, Kennedy, et al. devised an algorithm (SSAPRE) for performing partial redundancy elimination on intermediate representation in static single assignment (SSA) ...

Value-Based Partial Redundancy Elimination

Partial redundancy elimination (PRE) is a program transformation that identifies and eliminates expressions that are redundant on at least one (but not necessarily all) execution paths. Global value numbering (GVN) is a program analysis and transformation that identifies operations that compute the same value and eliminates operations that are redundant. A weakness of PRE is that it traditional...