[llvm-commits] [LLVM, SwitchInst, case ranges] Auxiliary patch #1

[Stepan Dyatkovskiy]

Hi all. The main discussion branch of this feature is here:
http://llvm.org/bugs/show_bug.cgi?id=1255

We need change SwitchInst internals: replace case value type from 
"ConstantInt" to "APInt", then move case values out from operands 
collection. To do that we need add APInt::isInitialized feature. We also 
need extend SmallSet class adding Compare parameter to this template:
template <typename T, unsigned N,  typename C = std::less<T> >

Please find attached patches for review.

Regards,
Stepan.
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