Code Restructuring for Improving Real Time Response through Code Speed, Size Trade-offs on Limited Memory Embedded DSPs

Embedded systems are constrained by limited on-chip memory and by real time performance requirements. The traditional approach to solve these problems has been to write the embedded code in assembly language, which can no longer be followed due to the increasing complexity of the embedded systems. Programming in high-level language simplifies the software development cycle, incurring a code size and a performance penalty. Traditional compiler optimizations have focussed on improving code speed rather than code density or code size. We present optimizations that improve code density and performance.