[PATCH] D104060: Machine IR Profile

[Kyungwoo Lee via Phabricator via llvm-commits]

kyulee added a comment.

> Yes there are other instrumentations that provide similar features with low runtime overhead, but MIP seems to be the only one that extracts out all metadata to minimize binary size overhead.

I echo this. There are instrumentations with similar features (e.g, code coverage) but they required to keep metadata in the final binary, The other/rest lightweight instrumentations (without metadata) are far from complete to match the feature that MIP provides.
The key differentiation of MIP is that the metadata (mipmap) is expressed with relative relocations, which can be extractable in any build target and platform, which took us non-trivial amount of time to make them right.
In theory, we could improve other existing insturmentations like MIP to extract metadata, but this may require a significant amount of changes in the architect and format.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D104060/new/

https://reviews.llvm.org/D104060