Resolution, Optimization, and Encoding of Pointer Variables for the Behavioral Synthesis from C

• Main Authors: Luc Semeria, Giovanni De Micheli
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2001
• Subjects: The Pointers
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.10.2745; http://chronos.stanford.edu/users/nanni/publications/archive/./2001/CADICSvol20iss2Feb01pg213.pdf

As designers may model mixed hardware--software systems using a subset of or ++, we present SpC, a solution to synthesize and optimize hardware models with pointers. In hardware, a pointer is not only the address of data in memory, but it may also reference data mapped to registers, ports, or wires. Pointer analysis is used to find the set of locations each pointer may reference in a program at compile time. In this paper, we address the problem of synthesizing and optimizing pointers to multiple variables or array elements. The value of the pointers are encoded and branching statements are used to dynamically access data referenced by pointers. A heuristic is used to efficiently encode the values of the pointers. Compiler techniques are also used to reduce storage before loads and stores. An implementation using the SUIF framework (Wilson et al., 1994; SUIF Compiler Framework) is presented, followed by some case studies and experimental results.