Check in LLVM r95781.
diff --git a/test/CodeGenCXX/function-template-specialization.cpp b/test/CodeGenCXX/function-template-specialization.cpp
new file mode 100644
index 0000000..4a79fb1
--- /dev/null
+++ b/test/CodeGenCXX/function-template-specialization.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
+template<typename T, typename U>
+T* next(T* ptr, const U& diff);
+
+template<typename T, typename U>
+T* next(T* ptr, const U& diff) {
+ return ptr + diff;
+}
+
+void test(int *iptr, float *fptr, int diff) {
+ // CHECK: _Z4nextIiiEPT_S1_RKT0_
+ iptr = next(iptr, diff);
+
+ // CHECK: _Z4nextIfiEPT_S1_RKT0_
+ fptr = next(fptr, diff);
+}
+
+template<typename T, typename U>
+T* next(T* ptr, const U& diff);
+
+void test2(int *iptr, double *dptr, int diff) {
+ iptr = next(iptr, diff);
+
+ // CHECK: _Z4nextIdiEPT_S1_RKT0_
+ dptr = next(dptr, diff);
+}