Fix struct member access for memory and implement for calldata.

test/libsolidity/semanticTests/viaYul/struct_member_access.sol

@@ -0,0 +1,39 @@
+pragma experimental ABIEncoderV2;
+
+contract C {
+    struct S {
+        uint a;
+        uint[] b;
+        uint c;
+    }
+
+    S s;
+    constructor() public {
+        s.a = 42;
+        s.b.push(1);
+        s.b.push(2);
+        s.b.push(3);
+        s.c = 21;
+    }
+
+    function f(S memory m) public pure returns (uint, uint[] memory, uint) {
+        return (m.a, m.b, m.c);
+    }
+    function g(S calldata c) external pure returns (uint, uint, uint, uint, uint, uint) {
+        return (c.a, c.b.length, c.c, c.b[0], c.b[1], c.b[2]);
+    }
+    function g2(S calldata c1, S calldata c2) external pure returns (uint, uint, uint, uint, uint, uint) {
+        return (c1.a, c1.c, c2.a, c2.b.length, c2.c, c2.b[0]);
+    }
+    function h() external view returns (uint, uint, uint, uint, uint, uint) {
+        return (s.a, s.b.length, s.c, s.b[0], s.b[1], s.b[2]);
+    }
+}
+// ====
+// EVMVersion: >homestead
+// compileViaYul: also
+// ----
+// f((uint256,uint256[],uint256)): 0x20, 42, 0x60, 21, 3, 1, 2, 3 -> 42, 0x60, 21, 3, 1, 2, 3
+// g((uint256,uint256[],uint256)): 0x20, 42, 0x60, 21, 3, 1, 2, 3 -> 42, 3, 21, 1, 2, 3
+// g2((uint256,uint256[],uint256),(uint256,uint256[],uint256)): 0x40, 0x0120, 42, 0x60, 21, 2, 1, 2, 3, 7, 0x80, 9, 0, 1, 17  -> 42, 21, 7, 1, 9, 17
+// h() -> 42, 3, 21, 1, 2, 3