[LLVMdev] Questions about Static Profile Estimator
Mark Murphy
mrkmurph at gmail.com
Thu Feb 5 09:51:00 PST 2015
I have been using ProfileEstimatorPass to provide some static ProfileInfo
information in order to do some optimizations, and I have a couple of
questions.
1. The estimator seems to be purely intra-procedural. It starts new edge
and block weights at the beginning of every function. Is there any existing
way to get this to produce a full program profile?
2. I found the BranchProbabilityInfo file and saw that it has heuristics
that should produce a good static estimate. Can BranchProbabilityInfo or
BlockFrequencyInfo be used to provide ProfileInfo data?
Thanks for any help or guidance you can give me.
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