[Sol->Yul] Implementing member access to arrays in calldata structs.

libsolidity/codegen/ir/IRGeneratorForStatements.cpp

@@ -1810,6 +1810,11 @@ void IRGeneratorForStatements::endVisit(MemberAccess const& _memberAccess)
 					", " <<
 					offset <<
 					")\n";
+			else if (
+				dynamic_cast<ArrayType const*>(_memberAccess.annotation().type) ||
+				dynamic_cast<StructType const*>(_memberAccess.annotation().type)
+			)
+				define(_memberAccess) << offset << "\n";
 			else
 				define(_memberAccess) <<
 					m_utils.readFromCalldata(*_memberAccess.annotation().type) <<

test/libsolidity/semanticTests/structs/calldata/calldata_struct_array_member.sol

@@ -1,4 +1,4 @@
-pragma abicoder               v2;
+pragma abicoder v2;
 
 
 contract C {
@@ -19,6 +19,7 @@ contract C {
         c = s.c;
     }
 }
-
+// ====
+// compileViaYul: also
 // ----
 // f((uint256,uint256[2],uint256)): 42, 1, 2, 23 -> 42, 1, 2, 23

test/libsolidity/semanticTests/structs/calldata/calldata_struct_array_member_dynamic.sol

@@ -0,0 +1,24 @@
+pragma abicoder v2;
+
+contract C {
+    struct S {
+        uint32 a;
+        uint256[] b;
+        uint64 c;
+    }
+
+    function f(S calldata s)
+        external
+        pure
+        returns (uint32 a, uint256 b0, uint256 b1, uint64 c)
+    {
+        a = s.a;
+        b0 = s.b[0];
+        b1 = s.b[1];
+        c = s.c;
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// f((uint32,uint256[],uint64)): 0x20, 42, 0x60, 23, 2, 1, 2 -> 42, 1, 2, 23

test/libsolidity/semanticTests/structs/calldata/calldata_struct_struct_member.sol

@@ -0,0 +1,28 @@
+pragma abicoder v2;
+
+contract C {
+    struct S {
+        uint64 a;
+        uint64 b;
+    }
+    struct S1 {
+        uint256 a;
+        S s;
+        uint256 c;
+    }
+
+    function f(S1 calldata s1)
+        external
+        pure
+        returns (uint256 a, uint64 b0, uint64 b1, uint256 c)
+    {
+        a = s1.a;
+        b0 = s1.s.a;
+        b1 = s1.s.b;
+        c = s1.c;
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// f((uint256,(uint64, uint64),uint256)): 42, 1, 2, 23 -> 42, 1, 2, 23

test/libsolidity/semanticTests/structs/calldata/calldata_struct_struct_member_dynamic.sol

@@ -0,0 +1,28 @@
+pragma abicoder v2;
+
+contract C {
+    struct S {
+        uint64 a;
+        bytes b;
+    }
+    struct S1 {
+        uint256 a;
+        S s;
+        uint256 c;
+    }
+
+    function f(S1 calldata s1)
+        external
+        pure
+        returns (uint256 a, uint64 b0, byte b1, uint256 c)
+    {
+        a = s1.a;
+        b0 = s1.s.a;
+        b1 = s1.s.b[0];
+        c = s1.c;
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// f((uint256,(uint64, bytes),uint256)): 0x20, 42, 0x60, 23, 1, 0x40, 2, "ab" -> 42, 1, "a", 23

test/libsolidity/semanticTests/various/nested_calldata_struct.sol

@@ -22,5 +22,7 @@ contract C {
     }
 }
 
+// ====
+// compileViaYul: also
 // ----
 // f((uint256,uint256,(uint256,uint256),uint256)): 1, 2, 3, 4, 5 -> 1, 2, 3, 4, 5