Support bare calls.

test/libsolidity/semanticTests/abiEncoderV1/abi_encode_call.sol

@@ -22,5 +22,7 @@ contract C {
     }
 }
 
+// ====
+// compileViaYul: also
 // ----
 // f() -> true

test/libsolidity/semanticTests/builtinFunctions/sha256_empty.sol

@@ -3,7 +3,5 @@ contract C {
         return sha256("");
     }
 }
-// ====
-// compileViaYul: also
 // ----
 // f() -> 0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

test/libsolidity/semanticTests/constructor/evm_exceptions_in_constructor_call_fail.sol

@@ -14,6 +14,8 @@ contract B {
     }
 }
 
+// ====
+// compileViaYul: also
 // ----
 // testIt() ->
 // test() -> 2

test/libsolidity/semanticTests/functionCall/delegatecall_return_value.sol

@@ -22,6 +22,7 @@ contract C {
     }
 }
 // ====
+// compileViaYul: also
 // EVMVersion: >=byzantium
 // ----
 // get() -> 0x00

test/libsolidity/semanticTests/functionCall/delegatecall_return_value_pre_byzantium.sol

@@ -24,6 +24,7 @@ contract C {
     }
 }
 // ====
+// compileViaYul: also
 // EVMVersion: <byzantium
 // ----
 // get() -> 0x00

test/libsolidity/semanticTests/various/staticcall_for_view_and_pure_pre_byzantium.sol

@@ -32,6 +32,7 @@ contract D {
     }
 }
 // ====
+// compileViaYul: also
 // EVMVersion: <byzantium
 // ----
 // f() -> 0x1