[llvm] [NFC][SampleFDO] Re-apply "In text sample prof reader, report more concrete parsing errors for different line types" (PR #155124)

[Mingming Liu via llvm-commits]

mingmingl-llvm wrote:

Searching `error` keyword in https://github.com/llvm/llvm-project/actions/runs/17181673072/job/48744876485?pr=155124 shows the error is in lldb and isn't caused by this change afaikt. So going to merge since this is a re-apply of approved change. Will keep an eye on buildbots.

```
Testing:  0.. 10
  UNRESOLVED: lldb-api :: functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py (378 of 3023)
  ******************** TEST 'lldb-api :: functionalities/data-formatter/data-formatter-stl/generic/list/TestDataFormatterGenericList.py' FAILED ********************
  Script:
  --
  /usr/bin/python3 /home/gha/actions-runner/_work/llvm-project/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env LLVM_LIBS_DIR=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./lib --env LLVM_INCLUDE_DIR=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/include --env LLVM_TOOLS_DIR=/home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin --libcxx-include-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/include/c++/v1 --libcxx-include-target-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/include/x86_64-unknown-linux-gnu/c++/v1 --libcxx-library-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./lib/x86_64-unknown-linux-gnu --arch x86_64 --build-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lldb-test-build.noindex --lldb-module-cache-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/lldb --compiler /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/clang --dsymutil /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin/dsymutil --make /usr/bin/gmake --llvm-tools-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./bin --lldb-obj-root /home/gha/actions-runner/_work/llvm-project/llvm-project/build/tools/lldb --lldb-libs-dir /home/gha/actions-runner/_work/llvm-project/llvm-project/build/./lib --cmake-build-type Release /home/gha/actions-runner/_work/llvm-project/llvm-project/lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/list -p TestDataFormatterGenericList.py
  --
  Exit Code: -6
  
  Command Output (stdout):
  --
  lldb version 22.0.0git (https://github.com/llvm/llvm-project revision 92ab1dfb820b536545c6182b04eed177108f14e7)
    clang revision 92ab1dfb820b536545c6182b04eed177108f14e7
    llvm revision 92ab1dfb820b536545c6182b04eed177108f14e7
  
  --
  Command Output (stderr):
  --
  UNSUPPORTED: LLDB (/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/clang-x86_64) :: test_ptr_and_ref_libcpp_dsym 
```

https://github.com/llvm/llvm-project/pull/155124