Merge pull request #11737 from ethereum/fix_shift_cleanup

Yul: Fix cleanup for left shift of bytes types.

Author: chriseth

libsolidity/codegen/YulUtilFunctions.cpp

@@ -445,7 +445,7 @@ string YulUtilFunctions::typedShiftLeftFunction(Type const& _type, Type const& _
 			Whiskers(R"(
 			function <functionName>(value, bits) -> result {
 				bits := <cleanAmount>(bits)
-				result := <cleanup>(<shift>(bits, value))
+				result := <cleanup>(<shift>(bits, <cleanup>(value)))
 			}
 			)")
 			("functionName", functionName)

test/libsolidity/semanticTests/operators/shifts/shift_bytes_cleanup_viaYul.sol

@@ -13,8 +13,8 @@ contract C {
 	}
 }
 // ====
-// compileViaYul: true
 // compileToEwasm: also
+// compileViaYul: true
 // ----
-// l(uint8): 64 -> 0x3930313233343536373839306162636465000000000000000000000000000000
+// l(uint8): 64 -> 0x3930313233343536373839300000000000000000000000000000000000000000
 // r(uint8): 64 -> 0x313233343536373839303132000000000000000000000000