[LLVMdev] LLVM use of C++ exceptions and RTTI

[Alasdair Grant]

Hi,

It's good that llvm/lib builds with exceptions and RTTI disabled as it
supports doing optimization and codegen on very constrained platforms.
Judging by REQUIRES_EH in makefiles, only a few bits like TableGen, llvm-ar
and llvm-ranlib need them, and I doubt these would need to run on a target.
It's unlikely exceptions would get in in a random patch, because it would
have to change the makefile; but even so, it would be useful to know that
it's due to a definite design rule (assuming that's the case).
Maybe this could be added to http://llvm.org/docs/CodingStandards.html ?

Al

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