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-rw-r--r--core/blockchain.go7
-rw-r--r--core/state_transition.go6
2 files changed, 5 insertions, 8 deletions
diff --git a/core/blockchain.go b/core/blockchain.go
index cab923bca..794e1915f 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -665,10 +665,11 @@ func SetReceiptsData(config *params.ChainConfig, block *types.Block, receipts ty
// The transaction hash can be retrieved from the transaction itself
receipts[j].TxHash = transactions[j].Hash()
- tx, _ := transactions[j].AsMessage(signer)
// The contract address can be derived from the transaction itself
- if MessageCreatesContract(tx) {
- receipts[j].ContractAddress = crypto.CreateAddress(tx.From(), tx.Nonce())
+ if transactions[j].To() == nil {
+ // Deriving the signer is expensive, only do if it's actually needed
+ from, _ := types.Sender(signer, transactions[j])
+ receipts[j].ContractAddress = crypto.CreateAddress(from, transactions[j].Nonce())
}
// The used gas can be calculated based on previous receipts
if j == 0 {
diff --git a/core/state_transition.go b/core/state_transition.go
index 9e11144c6..ea773b801 100644
--- a/core/state_transition.go
+++ b/core/state_transition.go
@@ -78,10 +78,6 @@ type Message interface {
Data() []byte
}
-func MessageCreatesContract(msg Message) bool {
- return msg.To() == nil
-}
-
// IntrinsicGas computes the 'intrinsic gas' for a message
// with the given data.
//
@@ -220,7 +216,7 @@ func (self *StateTransition) TransitionDb() (ret []byte, requiredGas, usedGas *b
sender := self.from() // err checked in preCheck
homestead := self.evm.ChainConfig().IsHomestead(self.evm.BlockNumber)
- contractCreation := MessageCreatesContract(msg)
+ contractCreation := msg.To() == nil
// Pay intrinsic gas
// TODO convert to uint64
intrinsicGas := IntrinsicGas(self.data, contractCreation, homestead)