面向VLIW DSP结构的编译器的设计与实现  

Design and Implementation of a VLIW DSP Compiler

作　　者：王敏[1,2] 王红梅[1,2] 张铁军[1] 单睿[1] 王东辉[1] 

机构地区：[1]中国科学院声学研究所,北京100190 [2]中国科学院研究生院,北京100039

出　　处：《微计算机应用》2009年第7期49-54,共6页Microcomputer Applications

摘　　要：VLIW编译器实现指令并行性挖掘、相关性检查、指令调度等职能,对VLIW处理器的性能影响较大。本文基于一款VLIW DSP芯片,利用可重定位编译器IMPACT的前端和代码生成器模板,设计和实现了高性能的VLIW编译器。利用伪数据类型和Intrinsic函数结合,在编译器中构建了对SIMD功能的支持。实验结果显示,对比基于GCC版本的编译器,该编译器生成的指令数平均下降42%,并行包数下降30%。VLIW compilers accomplish the tasks of ILP exploiting, instruction scheduling and dependence checks. It has great impact on the performance of VLIW processors. This paper presents the design and implementation of a VLIW DSP compiler, based on the front - end and code - generator template of a retargetable compiler IMPACT. A combination of pseudo data type and intrinsic function is used to support SIMD. The experimental results show that, compared with our GCC version compiler, the new compiler has 42% decrease of instruction number and 30% decrease of parallel package number.

关 键 词：编译器 超长指令字 代码生成器 单指令多数据 

分 类 号：TP314[自动化与计算机技术—计算机软件与理论]