diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index b551370..1c95b57 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -1478,7 +1478,8 @@
   assert(Addr->getType()->isPointerType());
   Addr = Addr->IgnoreParens();
   if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(Addr)) {
-    if (ICE->getCastKind() == CK_BitCast || ICE->getCastKind() == CK_NoOp) {
+    if ((ICE->getCastKind() == CK_BitCast || ICE->getCastKind() == CK_NoOp) &&
+        ICE->getSubExpr()->getType()->isPointerType()) {
       std::pair<llvm::Value*, unsigned> Ptr = 
           EmitPointerWithAlignment(ICE->getSubExpr());
       Ptr.first = Builder.CreateBitCast(Ptr.first,
diff --git a/test/CodeGenObjC/builtin-memfns.m b/test/CodeGenObjC/builtin-memfns.m
new file mode 100644
index 0000000..b5c87d9
--- /dev/null
+++ b/test/CodeGenObjC/builtin-memfns.m
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple x86_64-apple-macosx10.8.0 -emit-llvm < %s| FileCheck %s
+
+void *memcpy(void *restrict s1, const void *restrict s2, unsigned long n);
+
+// PR13660
+void test1(int *a, id b) {
+	// CHECK: @test1
+	// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* {{.*}}, i64 8, i32 1, i1 false)
+	memcpy(a, b, 8);
+}