Add test for operator overloaded by data location

test/libsolidity/semanticTests/operators/custom/operator_overloaded_by_data_location.sol

@@ -0,0 +1,53 @@
+using {
+    addC as +,
+    addM as +,
+    addS as +
+} for S;
+
+struct S {
+    uint v;
+}
+
+function addC(S calldata _s, S calldata) pure returns (S calldata) {
+    return _s;
+}
+
+function addM(S memory _s, S memory) pure returns (S memory) {
+    _s.v = 7;
+    return _s;
+}
+
+function addS(S storage _s, S storage) returns (S storage) {
+    _s.v = 13;
+    return _s;
+}
+
+contract C {
+    S s;
+
+    function testC(S calldata _s) public returns (S calldata) {
+        return _s + _s;
+    }
+
+    function testM() public returns (S memory) {
+        S memory sTmp;
+        return sTmp + sTmp;
+    }
+
+    function testS() public returns (uint) {
+        s + s;
+        return s.v;
+    }
+
+    function testSTmp() public returns (uint) {
+        S storage sTmp = s;
+        sTmp + sTmp;
+        return sTmp.v;
+    }
+}
+
+// ----
+// testC((uint256)): 3 -> 3
+// testM()-> 7
+// testS() -> 13
+// testSTmp() -> 13