Dmitri Gribenko 07aa3556c4 Provide the same ABI regardless of NDEBUG
For projects depending on LLVM, I find it very useful to combine a
release-no-asserts build of LLVM with a debug+asserts build of the dependent
project.  The motivation is that when developing a dependent project, you are
debugging that project itself, not LLVM.  In my usecase, a significant part of
the runtime is spent in LLVM optimization passes, so I would like to build LLVM
without assertions to get the best performance from this combination.

Currently, `lib/Support/Debug.cpp` changes the set of symbols it provides
depending on NDEBUG, while `include/llvm/Support/Debug.h` requires extra
symbols when NDEBUG is not defined.  Thus, it is not possible to enable
assertions in an external project that uses facilities of `Debug.h`.

This patch changes `Debug.cpp` and `Valgrind.cpp` to always define the symbols
that other code may depend on when #including LLVM headers without NDEBUG.

http://reviews.llvm.org/D7662



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229819 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 05:30:16 +00:00
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