Mircea Trofin 302e91baf4 [llvm][NFC] Add comments and common-case API to MachineBlockFrequencyInfo ...

Clarify the relation between a block's BlockFrequency and the
getEntryFreq() API, and added an API for the relatively common case of
finding a block's frequency relative to the entrypoint.

Added / moved some comments to header.

Differential Revision: https://reviews.llvm.org/D84357

2020-07-23 08:42:34 -07:00

64 KiB

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