[cfe-dev] Extracting llvm IR CFG from Clang

[xiaohui chen via cfe-dev]

Dear All:

I am working on Clang/LLVM and interested to know if there is a
programmatic way to extract the CFG of a specific
node in AST like a for loop?

 I am aware of -emit-llvmoption, but it will apply on the whole TU.

For example,
we could use  CFG::buildCFG to extract the source level CFG of a specific
node.
Is there a counterpart API to extract the LLVM IR level CFG of a specific
node?

Sincerely
xiaohui
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