Method codegen

libchigraph/src/GraphModule.cpp:194–273

	}

	Result codegen(
	    size_t /*inID*/, const llvm::DebugLoc& nodeLocation, const std::vector<llvm::Value*>& io,
	    llvm::BasicBlock* codegenInto, const std::vector<llvm::BasicBlock*>& outputBlocks,
	    std::unordered_map<std::string, std::shared_ptr<void>>& /*compileCache*/) override {
		assert(io.size() == dataInputs().size() + dataOutputs().size() && codegenInto != nullptr &&
		       outputBlocks.size() == 1);

		Result res;

		// compile the c code if it hasn't already been compiled
		if (llcompiledmod == nullptr) {
			auto args = mExtraArguments;

			// add -I for the .c dir
			args.push_back("-I");
			args.push_back(mGraphModule->pathToCSources().string());

			llcompiledmod = compileCCode(llvm::sys::fs::getMainExecutable(nullptr, nullptr).c_str(),
			                             mCCode, args, context().llvmContext(), res);

			if (!res) { return res; }
		}

		// create a copy of the module
		auto copymod = llvm::CloneModule(llcompiledmod.get());

		// link it in

		auto parentModule = codegenInto
		                        ->
#if LLVM_VERSION_LESS_EQUAL(3, 6)
		                    getParent()
		                        ->getParent()
#else
		                    getModule()
#endif
		    ;

#if LLVM_VERSION_LESS_EQUAL(3, 7)
		llvm::Linker::LinkModules(parentModule, copymod
#if LLVM_VERSION_LESS_EQUAL(3, 5)
		                          ,
		                          llvm::Linker::DestroySource, nullptr
#endif
		                          );
#else
		llvm::Linker::linkModules(*parentModule, std::move(copymod));
#endif

		parentModule->setDataLayout("");

		auto llfunc = parentModule->getFunction(mFunctionName);
		assert(llfunc != nullptr);

		llvm::IRBuilder<> builder(codegenInto);

		size_t ioSize = io.size();