•Sensible plan?
•Lipasti and Shen (1996) define value locality as
•“the likelihood of a
previously-seen value appearing in a
storage location”
•claim that for SPEC92, simple
hardware structure can predict load value correctly
49%-61% of the time
•Compare with optimising
compiler:
•opportunistic common subsexpression
elimination
•achieve more parallelism than the data
dependences allow (!)