Abstract
Data-transfer intensive applications typically contain heavily accessed memories involving considerable arithmetic for the computation and the selection of the different memory access pointers. This data processing, namely addressing, becomes dominant in the overall arithmetic cost and it has to be executed under very tight timing constraints. Different high-level optimizing alternatives suitable for addressing are explored in our Adopt methodology and prototype tool environment to reduce the addressing overhead. They include address expression splitting/clustering, induction variable analysis, target architecture selection, and global-scope algebraic optimization. In addition, some steps aiming to reduce at the system level the time-multiplexed address unit cost, are also incorporated for area and power efficiency. The techniques are demonstrated on test-vehicles representative of real-life applications, shelving important savings on the overall arithmetic cost.
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