Efficient hardware code generation for FPGAs

  • Authors:
  • Zhi Guo;Walid Najjar;Betul Buyukkurt

  • Affiliations:
  • University of California, Riverside, California;University of California, Riverside, California;University of California, Riverside, California

  • Venue:
  • ACM Transactions on Architecture and Code Optimization (TACO)
  • Year:
  • 2008

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Abstract

The wider acceptance of FPGAs as a computing device requires a higher level of programming abstraction. ROCCC is an optimizing C to HDL compiler. We describe the code generation approach in ROCCC. The smart buffer is a component that reuses input data between adjacent iterations. It significantly improves the performance of the circuit and simplifies loop control. The ROCCC-generated datapath can execute one loop iteration per clock cycle when there is no loop dependency or there is only scalar recurrence variable dependency. ROCCC's approach to supporting while-loops operating on scalars makes the compiler able to move scalar iterative computation into hardware.