Compiler Transformation of Pointers to Explicit Array Accesses in DSP Applications

Abstract. Efficient implementation of DSP applications are critical for embedded systems. However, current applications written in C, make extensive use of pointer arithmetic making compiler analysis and optimisation difficult. This paper presents a method for conversion of a restricted class of pointer-based memory accesses typically found in DSP codes into array accesses with explicit index functions. C programs with pointer accesses to array elements, data independent pointer arithmetic and structured loops can be converted into semantically equivalent representations with explicit array accesses. This technique has been applied to several DSPstone benchmarks on three different processors where initial

• Type: Conference
• Year: 2001
• Where: CC
• Authors: Björn Franke, Michael F. P. O'Boyle
• Keywords: Array Accesses, CC 2001, Explicit Array Accesses, Pointer Accesses, System Software