returnSize assigned according to truth value of returnInfo.dynamicReturnSize

test/libsolidity/semanticTests/functionCall/creation_function_call_with_args.sol

@@ -17,7 +17,7 @@ contract D {
 // compileViaYul: also
 // ----
 // constructor(): 2 ->
-// gas irOptimized: 200295
+// gas irOptimized: 203967
 // gas legacy: 245842
 // gas legacyOptimized: 195676
 // f() -> 2

test/libsolidity/semanticTests/functionCall/creation_function_call_with_salt.sol

@@ -18,7 +18,7 @@ contract D {
 // compileViaYul: also
 // ----
 // constructor(): 2 ->
-// gas irOptimized: 200458
+// gas irOptimized: 204130
 // gas legacy: 246202
 // gas legacyOptimized: 195914
 // f() -> 2

test/libsolidity/semanticTests/functionCall/external_call_to_nonexisting.sol

@@ -25,7 +25,7 @@ contract C {
 // compileViaYul: also
 // ----
 // constructor(), 1 ether ->
-// gas irOptimized: 308423
+// gas irOptimized: 315341
 // gas legacy: 465314
 // gas legacyOptimized: 304481
 // f(uint256): 0 -> FAILURE

test/libsolidity/semanticTests/functionCall/external_call_to_nonexisting_debugstrings.sol

@@ -27,7 +27,7 @@ contract C {
 // revertStrings: debug
 // ----
 // constructor(), 1 ether ->
-// gas irOptimized: 445767
+// gas irOptimized: 452673
 // gas legacy: 834272
 // gas legacyOptimized: 510004
 // f(uint256): 0 -> FAILURE, hex"08c379a0", 0x20, 37, "Target contract does not contain", " code"

test/libsolidity/semanticTests/functionCall/failed_create.sol

@@ -18,7 +18,7 @@ contract C {
 // compileViaYul: also
 // ----
 // constructor(), 20 wei
-// gas irOptimized: 213663
+// gas irOptimized: 219285
 // gas legacy: 294569
 // gas legacyOptimized: 174699
 // f(uint256): 20 -> 1370859564726510389319704988634906228201275401179
@@ -26,7 +26,7 @@ contract C {
 // f(uint256): 20 -> FAILURE
 // x() -> 1
 // stack(uint256): 1023 -> FAILURE
-// gas irOptimized: 304303
+// gas irOptimized: 314884
 // gas legacy: 483942
 // gas legacyOptimized: 298807
 // x() -> 1

test/libsolidity/semanticTests/functionCall/gas_and_value_basic.sol

@@ -41,7 +41,7 @@ contract test {
 // compileViaYul: also
 // ----
 // constructor(), 20 wei ->
-// gas irOptimized: 274154
+// gas irOptimized: 283040
 // gas legacy: 402654
 // gas legacyOptimized: 274470
 // sendAmount(uint256): 5 -> 5

test/libsolidity/semanticTests/functionCall/gas_and_value_brace_syntax.sol

@@ -40,7 +40,7 @@ contract test {
 // compileViaYul: also
 // ----
 // constructor(), 20 wei ->
-// gas irOptimized: 274154
+// gas irOptimized: 283040
 // gas legacy: 402654
 // gas legacyOptimized: 274470
 // sendAmount(uint256): 5 -> 5

test/libsolidity/semanticTests/functionCall/return_size_bigger_than_expected.sol

@@ -0,0 +1,31 @@
+interface ShortReturn {
+    function f() external pure returns (bytes32);
+}
+contract LongReturn {
+    function f() external pure returns (uint[20] memory) {}
+}
+
+contract Test {
+    function test() public returns (uint) {
+        LongReturn longReturn = new LongReturn();
+        uint freeMemoryBefore;
+        assembly {
+            freeMemoryBefore := mload(0x40)
+        }
+
+        ShortReturn(address(longReturn)).f();
+
+        uint freeMemoryAfter;
+
+        assembly {
+            freeMemoryAfter := mload(0x40)
+        }
+
+        return freeMemoryAfter - freeMemoryBefore;
+    }
+}
+// ====
+// compileViaYul: true
+// ----
+// test() -> 0x20
+// gas legacy: 131966

test/libsolidity/semanticTests/functionCall/return_size_shorter_than_expected.sol

@@ -0,0 +1,32 @@
+interface LongReturn {
+    function f() external pure returns (uint[20] memory);
+}
+contract ShortReturn {
+    function f() external pure returns (bytes32) {}
+}
+
+contract Test {
+    function test() public returns (uint) {
+        ShortReturn shortReturn = new ShortReturn();
+        uint freeMemoryBefore;
+        assembly {
+            freeMemoryBefore := mload(0x40)
+        }
+
+        LongReturn(address(shortReturn)).f();
+
+        uint freeMemoryAfter;
+
+        assembly {
+            freeMemoryAfter := mload(0x40)
+        }
+
+        return freeMemoryAfter - freeMemoryBefore;
+    }
+}
+// ====
+// EVMVersion: <=homestead
+// compileViaYul: true
+// ----
+// test() -> 0x0500
+// gas legacy: 131966

test/libsolidity/semanticTests/functionCall/return_size_shorter_than_expected_evm_version_after_homestead.sol

@@ -0,0 +1,34 @@
+interface LongReturn {
+    function f() external pure returns (uint[20] memory);
+}
+contract ShortReturn {
+    function f() external pure returns (bytes32) {}
+}
+
+contract Test {
+    function test() public returns (uint) {
+        ShortReturn shortReturn = new ShortReturn();
+        uint freeMemoryBefore;
+        assembly {
+            freeMemoryBefore := mload(0x40)
+        }
+
+        // This reverts. The external call succeeds but ABI decoding fails due to the returned
+        // `bytes32` being much shorter than the expected `uint[20]`.
+        LongReturn(address(shortReturn)).f();
+
+        uint freeMemoryAfter;
+
+        assembly {
+            freeMemoryAfter := mload(0x40)
+        }
+
+        return freeMemoryAfter - freeMemoryBefore;
+    }
+}
+// ====
+// EVMVersion: >homestead
+// compileViaYul: true
+// ----
+// test() -> FAILURE
+// gas legacy: 131966