Lecture

Instruction Set Extensions: High-Level Synthesis Techniques

Description

This lecture discusses instruction set extensions and high-level synthesis (HLS) in the context of embedded processors. It begins by examining the evolution of the Alpha processor, highlighting the trade-offs between performance, area, and power consumption. The instructor emphasizes the importance of efficiency in embedded systems, where energy and area are critical constraints. The lecture introduces automatic processor customization, showcasing how high-level synthesis can transform C programs into efficient hardware solutions. Various techniques for increasing implementation efficiency are explored, including instruction set extensions and the use of designer-defined features. The discussion also covers the challenges of static versus dynamic scheduling in HLS, emphasizing the need for flexibility in handling control flow and memory dependencies. The lecture concludes with insights into speculative execution and the potential for dynamic scheduling to enhance performance in control-dominated applications. Overall, the lecture provides a comprehensive overview of modern approaches to processor design and optimization in embedded systems.

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