[PATCH] D35175: New option that adds the DiagID enum name and index to Diagnostic output.

[don hinton via Phabricator via cfe-commits]

hintonda created this revision.

This option helps locate the origin of a diagnostic message
by outputing the enum name and index associated with a specific
DiagID, allowing users to grep the code for the enum name directly
without having to find it in the td files first.

Additional ideas:

1. add another option to pass in the index (or enum) to force an assert or backtrace when a specific DiagID is seen.
2. capture __FILE__ and __LINE__ when a diagnostic is created and output it.  This would make it easier to find the specific instance, and verify all instances are actually tested.  Currently, it's almost impossible to determine if all instances are actually tested.
3. keep track of the permutations and make sure each one is tested.


https://reviews.llvm.org/D35175

Files:
  include/clang/Basic/DiagnosticIDs.h
  include/clang/Basic/DiagnosticOptions.def
  include/clang/Driver/Options.td
  lib/Basic/DiagnosticIDs.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/TextDiagnosticPrinter.cpp

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