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c++11lambdallvmllvm-clangllvm-c++-api

LLVM IR Lambda Functions

I have compiled a C++11 program (test.cpp) into an LLVM IR file (test.ll) using clang++ 3.4. The program contains several C++ lambda functions, and I was wondering if it is possible to extract the IR for only the lambda functions using a technique like the following:

Module *mod = ParseIRFile("test.ll", *err, ctx);
for (Module::iterator f = mod->begin(); f != mod->end(); ++f) {
    //is there some function like isLambdaFunction()?
    if (f->isLambdaFunction()) { 
        cout << "Lambda Function" << endl;
    }
}
Solution

  • No. There is no notion of lambda functions in LLVM IR. Clang lowers lambdas to structs with methods, AFAIK.

    You could get this from Clang's AST, but not from LLVM IR.