Tests

test/libsolidity/semanticTests/array/cleanup_during_multi_element_per_slot_copy.sol

@@ -0,0 +1,22 @@
+contract C {
+  uint32[] s;
+  constructor()
+  {
+    s.push();
+    s.push();
+  }
+  function f() external returns (uint)
+  {
+    (s[1], s) = (4, [0]);
+    s = [0];
+    s.push();
+    return s[1];
+    // used to return 4 via IR.
+  }
+}
+// ----
+// constructor()
+// gas irOptimized: 237351
+// gas legacy: 221315
+// gas legacyOptimized: 185247
+// f() -> 0

test/libsolidity/semanticTests/array/function_type_array_to_storage.sol

@@ -0,0 +1,56 @@
+contract C {
+	string log;
+	function() external[] fs;
+	function() external[] gs;
+
+	function a() external {
+		log = string.concat(log, "[a called]");
+	}
+	function b() external {
+		log = string.concat(log, "[b called]");
+	}
+
+	function f(function() external[] calldata x) external {
+		fs = x;
+	}
+	function g(function() external[] memory x) public {
+		fs = x;
+	}
+	function test() external returns (string memory) {
+		log = "";
+		function() external[] memory x = new function() external[](2);
+		x[0] = this.a;
+		x[1] = this.b;
+		this.f(x);
+		fs[0]();
+		fs[1]();
+		return log;
+	}
+	function test2() external returns (string memory) {
+		log = "";
+		function() external[] memory x = new function() external[](2);
+		x[0] = this.b;
+		x[1] = this.a;
+		g(x);
+		fs[0]();
+		fs[1]();
+		return log;
+	}
+	function test3() external returns (string memory) {
+		log = "";
+		gs = fs;
+		gs[0]();
+		gs[1]();
+		return log;
+	}
+}
+// ----
+// test() -> 0x20, 0x14, "[a called][b called]"
+// gas irOptimized: 116724
+// gas legacy: 120707
+// gas legacyOptimized: 119241
+// test2() -> 0x20, 0x14, "[b called][a called]"
+// test3() -> 0x20, 0x14, "[b called][a called]"
+// gas irOptimized: 103304
+// gas legacy: 104648
+// gas legacyOptimized: 104075