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Shifting register windows

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2 Author(s)
Russell, G. ; Strathclyde Univ., Glasgow, UK ; Shaw, P.

Shifting register windows, a register windowing method that attempts to overcome some of the difficulties of traditional fixed- and variable-sized schemes, is described. Using fewer register elements than a seven-window Sparc organization, shifting register windows more than halves spill/refill memory traffic and reduces visible spill/refill cycles by an order of magnitude. In addition, shifting register windows, a scheme based on fast hardware stack and register-memory dribbling, has a very short register bus length. It also zeros registers as they are being allocated, making common initialization unnecessary.<>

Published in:

Micro, IEEE  (Volume:13 ,  Issue: 4 )