[PATCH] D39694: [VerifyDiagnosticConsumer] support -verify=PREFIX

[Joel E. Denny via Phabricator via cfe-commits]

jdenny created this revision.

This mimic's FileCheck's --check-prefix option.

The default PREFIX is "expected".  That is, "-verify" is equivalent to
"-verify=expected".

The goal is to permit exercising a single test suite source file with
different compiler options producing different sets of diagnostics.
While cpp can be combined with the existing -verify to accomplish the
same goal, source is often easier to read when it's not cluttered with
preprocessor directives.  For those cases, this tiny extension seems
worthwhile.


https://reviews.llvm.org/D39694

Files:
  include/clang/Basic/DiagnosticOptions.h
  include/clang/Driver/CC1Options.td
  lib/Frontend/CompilerInvocation.cpp
  lib/Frontend/VerifyDiagnosticConsumer.cpp
  test/Frontend/verify-prefix.c

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