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core/vm: optimize MSTORE and SLOAD (#16939)

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* vm/test: add tests+benchmarks for mstore

* core/vm: less alloc and copying for mstore

* core/vm: less allocs in sload

* vm: check for errors more correctly
This commit is contained in:
Martin Holst Swende
2018-06-14 11:23:37 +02:00
committed by Péter Szilágyi
parent 1836366ac1
commit 947e0afeb3
3 changed files with 68 additions and 11 deletions
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8
core/vm/instructions.go
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@ -556,7 +556,7 @@ func opMload(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *St
func opMstore(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
memory.Set(mStart.Uint64(), 32, math.PaddedBigBytes(val, 32))
memory.Set32(mStart.Uint64(), val)
evm.interpreter.intPool.put(mStart, val)
return nil, nil
@ -570,9 +570,9 @@ func opMstore8(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *
}
func opSload(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
loc := common.BigToHash(stack.pop())
val := evm.StateDB.GetState(contract.Address(), loc).Big()
stack.push(val)
loc := stack.peek()
val := evm.StateDB.GetState(contract.Address(), common.BigToHash(loc))
loc.SetBytes(val.Bytes())
return nil, nil
}