Fix for CodeGenSYCL/functionptr-addrspace.cpp lit test

	After optimization, the function is completely empty. Therefore it is "nocapture".
	ptr type arguments should be "noundef" (probably all args in C/C++ should be noundef).
	Both "nocapture" and "noundef" are correct.

Author: dbudanov-cmplr

clang/test/CodeGenSYCL/functionptr-addrspace.cpp

@@ -7,7 +7,7 @@ __attribute__((sycl_kernel)) void kernel_single_task(const Func &kernelFunc) {
   kernelFunc();
 }
 
-// CHECK: define dso_local spir_func{{.*}}invoke_function{{.*}}(i32 ()* nocapture %fptr, i32 addrspace(4)* nocapture %ptr)
+// CHECK: define dso_local spir_func{{.*}}invoke_function{{.*}}(i32 ()* nocapture noundef %fptr, i32 addrspace(4)* nocapture noundef %ptr)
 void invoke_function(int (*fptr)(), int *ptr) {}
 
 int f() { return 0; }