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Design and Implementation of Floating Point Stack on General RISC Architecture

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6 Author(s)
Xuehai Qian ; Inst. of Comput. Technol., Chinese Acad. of Sci. ; He Huang ; Hao Zhang ; Guoping Long
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This paper presents a framework for implementing the X86 FP stack used in an x86-compliant processor based on a general RISC architecture. Architectural supports are added to a typical RISC architecture to maintain the FP stack status. Some speculative techniques are applied to the decode stage to enable pipelined and efficient FP operations. An optimized register renaming scheme is proposed to eliminate redundant micro-ops in FP programs, resulting in an increased performance while mitigating the burden on register rename table. The simulation results show that on average more than 10% fmov micro-ops are removed. Elimination of micro-ops significantly speeds up the execution of programs. The IPC increases are as high as 30% for some programs, and near 10% on average

Published in:

Parallel, Distributed and Network-Based Processing, 2007. PDP '07. 15th EUROMICRO International Conference on

Date of Conference:

7-9 Feb. 2007

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