[PATCH] Change how we deal with (implicit) -fno-rtti + -fsanitize=vptr

[Filipe Cabecinhas]

Changed it to retain current behavior (never enable rtti just because of a sanitizer), but fix the failing case (we were assuming -cc1 would care about -fno-sanitize=).

Refactored the code so the rtti/no-rtti decision was made in one place, and the other code that cares just asks the ToolChain.


http://reviews.llvm.org/D7525

Files:
  include/clang/Driver/ToolChain.h
  lib/Driver/SanitizerArgs.cpp
  lib/Driver/ToolChain.cpp
  lib/Driver/Tools.cpp
  test/Driver/fsanitize.c
  test/Driver/rtti-options.cpp

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