DEBUG_RUNTIME unused?

Hi all,

There's a configuration switch --enable-debug-runtime that sets
DEBUG_RUNTIME to 1 (see
http://llvm.org/viewvc/llvm-project/llvm/trunk/configure?view=markup)
IIUC this variable is meant to control the debug symbols in the
runtime libraries, but it is not used anywhere except projects/sample/

I'd like to be able to build compiler-rt with debug symbols, but not
all the users will appreciate adding -g by default.
Should I add support for DEBUG_RUNTIME to compiler-rt?

TIA,
Alexander Potapenko
Software Engineer
Google Moscow