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July 1981 (vol. 30 no. 7)
pp. 491-504
M. Tokoro, Department of Electrical Engineering, Keio University
This paper describes a microprogram optimization technique called MORIF. The technique is general enough to treat machines whose microoperations require multiple machine cycles on a subcycle basis. The technique is applicable to microinstruction formats varying from horizontal to partially encoded, and to vertical. The technique includes global optimization algorithms for microprograms containing loops and recursive subroutines. Evaluation of the technique is performed from both the viewpoints of the complexity of the devised algorithms, and efficiency of generated object microcodes.
Index Terms:
polysubcycle model, Data flow analysis, local and global optimization, microinstruction format selection, optimization of microprograms, polymachine cycle
Citation:
M. Tokoro, E. Tamura, T. Takizuka, "Optimization of Microprograms," IEEE Transactions on Computers, vol. 30, no. 7, pp. 491-504, July 1981, doi:10.1109/TC.1981.1675828
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