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- Yields improved performance through
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reduced latency via forwarding
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reduced stalls due to structural, WAR and WAW hazards
- Substantial hardware cost
- Associative lookup needed for tag matching
- For every register and reservation station
- Tag matching must be very fast
- Performance could be improved by duplicating the CDB,
but would need to do double tag matching at every
register and reservation station
Paul H J Kelly
Mon Dec 1 20:07:28 GMT 1997