minor cleanup

core/blockchain.go

@@ -1803,27 +1803,6 @@ func (bc *BlockChain) insertChain(chain types.Blocks, verifySeals bool) (int, er
 	return it.index, err
 }
 
-// PreprocessBlock processes block on top of the chain to calculate receipts, bloom and state root
-func (bc *BlockChain) PreprocessBlock(block *types.Block) (common.Hash, types.Bloom, common.Hash, uint64, error) {
-	// Retrieve the parent block and it's state to execute on top
-	parent := bc.CurrentBlock().Header()
-	if parent == nil {
-		parent = bc.GetHeader(block.ParentHash(), block.NumberU64()-1)
-	}
-	statedb, err := state.New(parent.Root, bc.stateCache, bc.snaps)
-	if err != nil {
-		return common.Hash{}, types.Bloom{}, common.Hash{}, 0, err
-	}
-	receipts, _, usedGas, err := bc.processor.Process(block, statedb, bc.vmConfig)
-	if err != nil {
-		return common.Hash{}, types.Bloom{}, common.Hash{}, 0, err
-	}
-	receiptSha := types.DeriveSha(receipts, trie.NewStackTrie(nil))
-	bloom := types.CreateBloom(receipts)
-	stateRoot := statedb.GetRootHash()
-	return receiptSha, bloom, stateRoot, usedGas, nil
-}
-
 func (bc *BlockChain) BuildAndWriteBlock(parentBlock *types.Block, header *types.Header, txs types.Transactions) (WriteStatus, error) {
 	if !bc.chainmu.TryLock() {
 		return NonStatTy, errInsertionInterrupted

rollup/da_syncer/da/da.go

@@ -41,7 +41,7 @@ type PartialHeader struct {
 	Time       uint64
 	BaseFee    *big.Int
 	GasLimit   uint64
-	Difficulty *big.Int
+	Difficulty uint64
 	ExtraData  []byte
 }
 
@@ -51,7 +51,7 @@ func (h *PartialHeader) ToHeader() *types.Header {
 		Time:       h.Time,
 		BaseFee:    h.BaseFee,
 		GasLimit:   h.GasLimit,
-		Difficulty: h.Difficulty,
+		Difficulty: new(big.Int).SetUint64(h.Difficulty),
 		Extra:      h.ExtraData,
 	}
 }