一个架构描述驱动的窥视孔优化器

R. Kessler
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引用次数: 35

摘要

Peep是一个架构描述驱动的窥视孔优化器,它被改编用于可移植标准Lisp编译器。在编译器创建之前,根据目标机器的体系结构描述生成可优化指令表。然后,Peep对目标机器码执行全局流分析,并按照表中定义的方式优化指令。这种全局流分析允许跨基本指令块进行优化,并且使用在编译器生成时创建的表可以最大限度地减少发现可优化指令的开销。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Peep: an architectural description driven peephole optimizer
Peep is an architectural description driven peephole optimizer, that is being adapted for use in the Portable Standard Lisp compiler. Tables of optimizable instructions are generated prior to the creation of the compiler from the architectural description of the target machine. Peep then performs global flow analysis on the target machine code and optimizes instructions as defined in the table. This global flow analysis allows optimization across basic blocks of instructions, and the use of tables created at compiler-generation time minimizes the overhead of discovering optimizable instructions.
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