[PATCH] D45850: [ELF] Read the call graph profile from object files.

[Michael Spencer via Phabricator via llvm-commits]

Bigcheese created this revision.
Bigcheese added reviewers: ruiu, espindola.
Herald added subscribers: arichardson, emaste.

This uses the call graph profile embedded in the object files to construct the call graph.

This is read from a `SHT_LLVM_CALL_GRAPH_PROFILE` (0x6fff4c02) section as (uint32_t, uint32_t, uint64_t) tuples as (from symbol index, to symbol index, weight).

This depends on https://reviews.llvm.org/D44965 for llvm.


https://reviews.llvm.org/D45850

Files:
  ELF/Config.h
  ELF/Driver.cpp
  ELF/InputFiles.cpp
  ELF/InputFiles.h
  test/ELF/cgprofile-obj.s

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