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+title = "Profile-based heuristics"
+author = "Yann Herklotz"
+tags = []
+categories = []
+backlinks = ["2b1d1"]
+forwardlinks = []
+zettelid = "2b1d2"
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+
+These are probably the most common. A test set of inputs can be used to
+check which are the most likely paths for the program to take, which
+guides the formation of the regions to be if-converted. This gives good
+performance as paths that are often executed can be placed into one
+region, whereas paths that are not executed are placed outside of the
+blocks so that the if-converted instructions do not take up time in the
+critical path.