[PATCH] D27604: [Driver] Add compiler option to generate a reproducer

[Bruno Cardoso Lopes via Phabricator via cfe-commits]

bruno created this revision.
bruno added reviewers: rsmith, v.g.vassilev.
bruno added subscribers: cfe-commits, mehdi_amini.

One way to currently test the reproducers is to setup
"FORCE_CLANG_DIAGNOSTICS_CRASH=1" before invoking clang. This simulates
a crash and produces the same contents needed by the reproducers.

The reproducers are specially useful when triaging Modules issues, not
only on crashes, but also for reproducing misleading warnings, errors,
etc. I propose we add '-gen-reproducer' driver option to clang (or
any similar name) and give users a flag option.

Additionally, clang already have -fno-crash-diagnostics, which disables
the crash reproducers. I've decided not to propose "-fcrash-diagnostics"
since it doesn't convey the ideia of reproduction despite a crash.


https://reviews.llvm.org/D27604

Files:
  docs/UsersManual.rst
  include/clang/Basic/DiagnosticDriverKinds.td
  include/clang/Driver/Driver.h
  include/clang/Driver/Options.td
  lib/Driver/Driver.cpp
  test/Driver/crash-report-crashfile.m
  tools/driver/driver.cpp

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