[PATCH] D104060: Machine IR Profile

[Ellis Hoag via Phabricator via llvm-commits]

ellis added a comment.

> Can you compare the instrumentation overhead with -fcs-profile-generate? (as with -fprofile-generate). You may also want to disable value profiling (which can be expensive) in -fcs-profile-generate.



> Thanks for sharing this! Specifically re: the -fprofile-generate v. MIP comparison for code coverage, perhaps it would be more fair to compare against -finstrument-function-entry-bare. The latter only adds one call per function, whereas -fprofile-generate can add instrument a function in more than one place.

@davidxl @vsk

Yes, I am planning to run some more simple benchmarks from `llvm-test-suite` for code size and performance of the instrumented binaries. I can compare MIP vs `-finstrument-function-entry-bare`, but are there any flags I should compare against?


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https://reviews.llvm.org/D104060