EAN: 9783031006012

SYNTHESIS LECTURES ON COMPUTER ARCHITECTURE P...

This lecture presents a study of the microarchitecture of contemporary microprocessors. The
focus is on implementation aspects  with discussions on their implications in terms of
performance  power  and cost of state-of-the-art designs. The lecture starts with an overview
of the different types of microprocessors and a review of the microarchitecture of cache
memories. Then  it describes the implementation of the fetch unit  where special emphasis is
made on the required support for branch prediction. The next section is devoted to instruction
decode with special focus on the particular support to decoding x86 instructions. The next
chapter presents the allocation stage and pays special attention to the implementation of
register renaming. Afterward  the issue stage is studied. Here  the logic to implement
out-of-order issue for both memory and non-memory instructions is thoroughly described. The
following chapter focuses on the instruction execution and describes the different functional
units that can be found in contemporary microprocessors  as well as the implementation of the
bypass network  which has an important impact on the performance. Finally  the lecture
concludes with the commit stage  where it describes how the architectural state is updated and
recovered in case of exceptions or misspeculations. This lecture is intended for an advanced
course on computer architecture  suitable for graduate students or senior undergrads who want
to specialize in the area of computer architecture. It is also intended for practitioners in
the industry in the area of microprocessor design. The book assumes that the reader is familiar
with the main concepts regarding pipelining  out-of-order execution  cache memories  and
virtual memory. Table of Contents: Introduction   Caches   The Instruction Fetch Unit   Decode
Allocation   The Issue Stage   Execute   The Commit Stage   References   Author Biographies

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