Hi, This patch adds dump printouts for scheduling heuristics in rank_for_schedule. Rank_for_schedule is one of the cornerstones of haifa scheduler, yet its decisions are hard to track and debug.
This patch adds statistical gathering for each branch of rank_for_schedule, and prints them out according to sched verbosity. This patch helped me track down several bugs in rank_for_schedule that result is stupid scheduling decisions. Bootstrapped and tested on x86_64-linux-gnu. OK to apply? Thank you, -- Maxim Kuvyrkov www.linaro.org
0002-Add-statistical-printout-of-rank_for_schedule-decisi.patch
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