The SSA Representation Framework: Semantics, Analyses and GCC Implementation

Overview & Synopsis

The Static Single Assignment (SSA) language is one of the intermediate representations commonly used in industrial compilers. However, there was little interest from the static program analysis community in this intermediate representation due to the weak formal grounds of the SSA. This thesis presents a denotational semantics of the SSA language, allowing formal definitions of static analyses on the SSA language based on the classical abstract interpretation framework. From a practical point of view, we present the implementation of the formally described static analyses on the SSA in an industrial compiler: the GNU Compiler Collection (GCC).