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2013 Jul 24
1
[LLVMdev] Pre-RA scheduler details
...LVM,
list-hybrid and list-ilp. I've done some digging on the internet and played
around with executing some test files using the two schedules. However, I'm
still uncertain of the behaviors and heuristics used in each.
For example, the XXXX_ls_rr_sort::isReady for hybrid includes a 3 cycle
readydelay (seems arbitrary) whereas the ilp version readies all
instructions once data dependencies are resolved.
Additionally, the ilp_ls_rr_sort::operator() just calls BURRSort at the end
after applying a bunch of heuristics to the queue beforehand. Reading it is
quite laborious (very few comments) and wa...