[llvm] r205430 - ARM: Add support for segmented stacks

[Tim Northover]

> +    ARMConstantPoolValue *NewCPV = ARMConstantPoolSymbol::Create(
> +        MF.getFunction()->getContext(), "STACK_LIMIT", PCLabelId, 0);

I thought I'd already mentioned that this is incompatible with C.
Someone could quite easily write "int STACK_LIMIT = 42;" in a program.

Tim.