25112 Rev. 3.06 September 2005

Software Optimization Guide for AMD64 Processors

2.2332-Bit Integral Data Types

Optimization

Use 32-bit integers instead of integers with smaller sizes (16-bit or 8-bit).

Application

This optimization applies to 32-bit software.

Rational

Be aware of the amount of storage associated with each integral data type.

Chapter 2

C and C++ Source-Level Optimizations

47

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AMD 250 manual 23 32-Bit Integral Data Types, Rational