Flexible pipeline for interlock removal

Details Flexible pipeline for interlock removal Flexible pipeline for interlock removal

1995-12-18

1998-07-07

Pan, Daniel H.

Boots, shoes, and leggings

395556, 395395, 364DIG1, 364DIG2, G06F 938, G06F 1342

Patent

active

057782083

ABSTRACT:
A flexible pipeline for reducing performance limiting pipeline interlocks in the execution of programs. The pipeline architecture includes for each pipeline a fetch stage, a decode stage, an execution stage, a hybrid memory/execution stage, and a write back stage. When the result from the execution stage of a first pipeline is not available to a second pipeline until the write back stage of the first pipeline as a consequence of an interlock, the execution stage of the second pipeline may be delayed at least one execution cycle so that the executable functions are performed in the hybrid memory/execution stage or fourth stage of the second pipeline. The result from the execution stage is obtained either by a calculation of the effective address of a memory location or by performing arithmetic/logical unit (ALU) functions. The third stage of operation of the second pipeline carries out a null operation when the execute operation is performed in the fourth stage as a consequence of, for example, a load instruction being followed by a use instruction thereby resulting in a pipeline interlock.

REFERENCES:
patent: Re34052 (1992-09-01), Hester et al.
patent: 4750112 (1988-06-01), Jones et al.
patent: 4985825 (1991-01-01), Webb, Jr. et al.
patent: 5051940 (1991-09-01), Vassiliadis et al.
patent: 5081575 (1992-01-01), Hiller et al.
patent: 5099421 (1992-03-01), Buerkle et al.
patent: 5193167 (1993-03-01), Sites et al.
patent: 5297281 (1994-03-01), Emma et al.
patent: 5299319 (1994-03-01), Vassiliadis et al.
patent: 5333284 (1994-07-01), Nugent
patent: 5367648 (1994-11-01), Chuang et al.
patent: 5404552 (1995-04-01), Ikenaga
patent: 5416911 (1995-05-01), Dinkjian et al.
patent: 5426743 (1995-06-01), Phillips et al.
patent: 5434993 (1995-07-01), Liencres et al.

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