Displaying 2 results from an estimated 2 matches for "e0247ca0".
2014 Feb 03
2
[LLVMdev] [RFC] BlockFrequency is the wrong metric; we need a new one
...branch predictor’s history table will pick up on that and successfully predict this branch despite it being unbiased when considered in isolation.
—Owen
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2014 Feb 02
5
[LLVMdev] [RFC] BlockFrequency is the wrong metric; we need a new one
Right now, all profile information is funneled through two analysis passes
prior to any part of the optimizer using it.
First, we have BranchProbabilityInfo, which provides a simple interface to
the simplest form of profile information: local and relative branch
probabilities. These merely express the likelihood of taking one of a
mutually exclusive set of exit paths from a basic block. They are