+/// @brief Get an update functor that updates the value of a named function
+/// pointer.
+template <typename JITLayerT>
+JITCompileCallbackManagerBase::UpdateFtor
+getLocalFPUpdater(JITLayerT &JIT, typename JITLayerT::ModuleSetHandleT H,
+ std::string Name) {
+ // FIXME: Move-capture Name once we can use C++14.
+ return [=,&JIT](TargetAddress Addr) {
+ auto FPSym = JIT.findSymbolIn(H, Name, true);
+ assert(FPSym && "Cannot find function pointer to update.");
+ void *FPAddr = reinterpret_cast<void*>(
+ static_cast<uintptr_t>(FPSym.getAddress()));
+ memcpy(FPAddr, &Addr, sizeof(uintptr_t));
+ };
+ }
+
+/// @brief Build a function pointer of FunctionType with the given constant
+/// address.
+///
+/// Usage example: Turn a trampoline address into a function pointer constant
+/// for use in a stub.
+Constant* createIRTypedAddress(FunctionType &FT, TargetAddress Addr);
+
+/// @brief Create a function pointer with the given type, name, and initializer
+/// in the given Module.
+GlobalVariable* createImplPointer(PointerType &PT, Module &M,
+ const Twine &Name, Constant *Initializer);