[PATCH] D77422: [llvm-exegesis] Add benchmark mode that uses LBR for more precise measurements.

[Vy Nguyen via Phabricator via llvm-commits]

oontvoo added a comment.

Updated patch to cover what we discussed in the sync last week and this week, specifically:

- Remove the worker-thread executor (not needed. It's fine to use the same thread)
- Make PerfEvent virtual so the X86Counter can create its own PerfEvent with LBR-specific attributes.

Remaining questions:

- Counter should be able to return more than one readings.
- We should validate that repetion-mode=loop for LBR


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  https://reviews.llvm.org/D77422/new/

https://reviews.llvm.org/D77422