rel=“noreferer”> 第条规定,每个登记册都有预定目的,更重要的是,
When the engineers at Intel designed the original 8086 processor, they had a special purpose in mind for each register. As they designed the instruction set, they created many optimizations and special instructions based on the function they expected each register to perform. Using registers according to Intel s original plan allows the code to take full advantage of these optimizations. Unfortunately, this seems to be a lost art. Few coders are aware of Intel s overall design, and most compilers are too the simplistic or focused on execution speed to use the registers properly. Understanding how the registers and instruction set fit together, however, is an important step on the road to effortless size-coding.
是否有其他来源证实这一条? 如果是的话,我真的要检查一下。
请指出: I m不讨论像<代码>STOS”使用<代码>><>edi的快速运行情况——我很想知道,如果我使用<代码>eax和