Underlying the front-end parsers is a symbolic instruction set – a kind of portable assembly code – which can be translated to any of the supported machine architectures.
因为前端解析器其实是符号化指令集，这种指令集实质上是一组可移植的汇编码，能够翻译到任何支持的机器架构之上。
Therefore, on most architectures, a find-first-bit-set instruction is used to find the highest priority bit set in one of five 32-bit words (for the 140 priorities).
因此，在大部分体系架构上，会使用一条find - first -bit -set指令在5个32位的字(140个优先级)中哪一位的优先级最高。
An ARM7 instruction set simulator is implemented for illustration, and the optimization techniques presented in this paper are also applicable for most other modern RISC architectures.
以arm 7指令集模拟器为实例，所提出的优化技术同样适用于其它现代RISC体系结构。
An ARM7 instruction set simulator is implemented for illustration, and the optimization techniques presented in this paper are also applicable for most other modern RISC architectures.
以arm 7指令集模拟器为实例，所提出的优化技术同样适用于其它现代RISC体系结构。
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