Index: lib/CodeGen/Analysis.cpp
===================================================================
--- lib/CodeGen/Analysis.cpp
+++ lib/CodeGen/Analysis.cpp
@@ -590,6 +590,7 @@
   // argument. On other platforms like arm-none-eabi, memcpy may be
   // expanded as library call without return value, like __aeabi_memcpy.
   const CallInst *Call = cast<CallInst>(I);
+  auto *BitCastIn = dyn_cast<BitCastInst>(Call->getArgOperand(0));
   if (Function *F = Call->getCalledFunction()) {
     Intrinsic::ID IID = F->getIntrinsicID();
     if (((IID == Intrinsic::memcpy &&
@@ -598,7 +599,10 @@
           TLI.getLibcallName(RTLIB::MEMMOVE) == StringRef("memmove")) ||
          (IID == Intrinsic::memset &&
           TLI.getLibcallName(RTLIB::MEMSET) == StringRef("memset"))) &&
-        RetVal == Call->getArgOperand(0))
+        (RetVal == Call->getArgOperand(0) || 
+         (BitCastIn && RetVal == BitCastIn->getOperand(0) && 
+          Call->getArgOperand(0)->getType()->isPointerTy() &&
+          BitCastIn->getOperand(0)->getType()->isPointerTy())))
       return true;
   }