[llvm] [BOLT] Extract call continuation traces from pre-aggregated profile (PR #109486)

[Amir Ayupov via llvm-commits]

aaupov wrote:

> Hi Amir, what's the status here, do you plan to make this only kick in for preaggregated profile, or are you done equalizing both cases by removing the adjustment in line 906?

Performance testing shows it's better to restrict return profile conversion to pre-aggregated profile only. I'll update the description.

https://github.com/llvm/llvm-project/pull/109486