[PATCH] D60086: [SampleProfile] Check entry count instead of total count to decide if inlined callsite is hot.

[Wei Mi via Phabricator via llvm-commits]

wmi added a comment.

Theorectically, as you said checking entry sample count rather than the total sample count makes more sense. However, the entry sample count of callsite is not as precise as function sample entry count, which is got from lbr directly. For callsite, it can get very wrong entry sample count because of missing debug information after optimization. That is why we chose total sample count instead of entry sample count when evaluating the hotness of callsite.


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https://reviews.llvm.org/D60086