[PATCH] D114565: [InstrProf] Attach debug info to counters

[Ellis Hoag via Phabricator via cfe-commits]

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Add the llvm flag `-debug-info-correlate` to attach debug info to instrumentation counters so we can correlate raw profile data to their functions. Raw profiles are dumped as `.proflite` files. The next diff enables `llvm-profdata` to consume `.proflite` and debug info files to produce a normal `.profdata` profile.

Part of the "lightweight instrumentation" work: https://groups.google.com/g/llvm-dev/c/r03Z6JoN7d4


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D114565

Files:
  clang/lib/CodeGen/BackendUtil.cpp
  compiler-rt/include/profile/InstrProfData.inc
  compiler-rt/lib/profile/InstrProfiling.c
  compiler-rt/lib/profile/InstrProfilingMerge.c
  compiler-rt/lib/profile/InstrProfilingWriter.c
  llvm/include/llvm/ProfileData/InstrProf.h
  llvm/include/llvm/ProfileData/InstrProfData.inc
  llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
  llvm/lib/ProfileData/InstrProf.cpp
  llvm/lib/ProfileData/InstrProfWriter.cpp
  llvm/lib/Transforms/Instrumentation/InstrProfiling.cpp
  llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
  llvm/test/Instrumentation/InstrProfiling/debug-info-correlate.ll

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