[llvm] [TRE] Adjust function entry count when using instrumented profiles (PR #143987)

[Matthias Braun via llvm-commits]

MatzeB wrote:

For my understanding: Is this a performance improvement? Otherwise I would expect the pass to just invalidate the analysis (as it doesn't seem to explicitely preserve it) forcing a recompute of BlockFrequencyInfo next time it is needed?

https://github.com/llvm/llvm-project/pull/143987