snehasish marked an inline comment as done.
snehasish added a comment.

In D145644#4182239 <https://reviews.llvm.org/D145644#4182239>, @tejohnson wrote:
> Generally lgtm, but why did the raw profiles change size from what is 
> currently committed?

The reduction in size of the raw profiles is due to D145528 
<https://reviews.llvm.org/D145528> where we moved the initialization flags. The 
older raw profiles include e.g. 4 entries for the basic test case including 
calls to malloc from `Symbolizer::LateInitialize`. These two entries were 
pruned by the filtering logic in RawMemProfReader but contribute to the 
original raw file size. After D145528 <https://reviews.llvm.org/D145528> we 
only have two entries in the generated raw profile. Verified by making a local 
change to disable filtering and ran `llvm-profdata show --memory` on the older 
profiles.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D145644/new/

https://reviews.llvm.org/D145644

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