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Chapter 4
4. Implementation Issues
Performance depends on the implementation of an architecture: code optimized for one implementation or system may function poorly on another. This section describes implementation-specific features and the effects they have on performance. Although optimal performance on different implementations may involve code selection issues, this chapter focuses on the following implementation-specific optimization methods:
These optimization methods are sensitive to the detailed layout and code selection of the program, but the specific optimizations that are most beneficial for general-purpose code include:
The trade-offs of scheduling and alignment choices are described and, when possible, the best choices for the full range of PowerPC implementations are identified.
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