[llvm-dev] how to get LoopInfo in FunctionPass in LLVM3.7.0

[Q Z via llvm-dev]

I want get some loop information(the methods are included in LoopInfo
class) ,but when I use "const LoopInfo *LI=&getAnalysis<LoopInfo>()", I got
a compiler error.
the version of LLVM is 3.7.0.

can anyone help me?please give me some example.thank you!
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