[PATCH] D99110: [Coverage] Load records immediately

[Choongwoo Han via Phabricator via llvm-commits]

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The current implementation keeps binary buffers until it completes
loading of all files. This approach requires a lot of memory if there
are a lot of huge binaries. Thus, make it to load coverage records
immediately rather than waiting for loading other binaries.

This reduces memory usage from >128GB to 5GB in my case.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99110

Files:
  llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
  llvm/include/llvm/ProfileData/Coverage/CoverageMappingReader.h
  llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
  llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
  llvm/unittests/ProfileData/CoverageMappingTest.cpp

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