Corresponding code in the .cpp file has been commented instead of begin removed pending preliminary reviews

Code generators needed fixing of the cleanup process during typecasting of bytes and integers

test/libsolidity/semanticTests/cleanup/cleanup_bytes_types_shortening_OldCodeGen.sol

@@ -11,7 +11,6 @@ contract C {
     }
 }
 // ====
-// compileToEwasm: also
-// compileViaYul: also
+// compileViaYul: false
 // ----
-// f() -> "\xff\xff\xff\xff"
+// f() -> 0xffffffff00000000000000000000000000000000000000000000000000000000

test/libsolidity/semanticTests/cleanup/cleanup_bytes_types_shortening_newCodeGen.sol

@@ -0,0 +1,14 @@
+contract C {
+    function f() public pure returns (bytes32 r) {
+        bytes4 x = 0xffffffff;
+        bytes2 y = bytes2(x);
+        assembly {
+            r := y
+        }
+    }
+}
+// ====
+// compileToEwasm: also
+// compileViaYul: true
+// ----
+// f() -> 0xffff000000000000000000000000000000000000000000000000000000000000

test/libsolidity/semanticTests/cleanup/indexed_log_topic_during_explicit_downcast.sol

@@ -0,0 +1,23 @@
+contract C {
+    function f() public pure returns (uint32 y) {
+        uint8 x = uint8(uint256(0x31313131313131313131313131313131));
+        assembly { y := x }
+    }
+
+    function g() public pure returns (bytes32 y) {
+        bytes1 x = bytes1(bytes16(0x31313131313131313131313131313131));
+        assembly { y := x }
+    }
+
+    function h() external returns (bytes32 y) {
+        bytes1 x;
+        assembly { x := sub(0,1) }
+        y = x;
+    }
+}
+// ====
+// compileViaYul: true
+// ----
+// f() -> 0x31
+// g() -> 0x3100000000000000000000000000000000000000000000000000000000000000
+// h() -> 0xff00000000000000000000000000000000000000000000000000000000000000

test/libsolidity/semanticTests/cleanup/indexed_log_topic_during_explicit_downcast_during_emissions.sol

@@ -0,0 +1,19 @@
+contract C {
+    event ev0(bytes1 indexed);
+    constructor() {
+        emit ev0(bytes1(bytes16(0x31313131313131313131313131313131)));
+    }
+    function j() external {
+        bytes1 x;
+        assembly { x := 0x3131313131313131313131313131313131313131313131313131313131313131 }
+        emit ev0(x);
+    }
+}
+// ====
+// compileViaYul: also
+// ----
+// constructor() ->
+// ~ emit ev0(bytes1): #"1"
+// gas legacy: 168735
+// j() ->
+// ~ emit ev0(bytes1): #"1"

test/libsolidity/semanticTests/userDefinedValueType/erc20.sol

@@ -115,7 +115,7 @@ contract ERC20 {
 // ----
 // constructor()
 // ~ emit Transfer(address,address,uint256): #0x00, #0x1212121212121212121212121212120000000012, 0x14
-// gas irOptimized: 442239
+// gas irOptimized: 447831
 // gas legacy: 861559
 // gas legacyOptimized: 420959
 // totalSupply() -> 20

test/libsolidity/semanticTests/various/erc20.sol

@@ -98,7 +98,7 @@ contract ERC20 {
 // ----
 // constructor()
 // ~ emit Transfer(address,address,uint256): #0x00, #0x1212121212121212121212121212120000000012, 0x14
-// gas irOptimized: 437697
+// gas irOptimized: 443295
 // gas legacy: 833310
 // gas legacyOptimized: 416135
 // totalSupply() -> 20