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[DRAFT] No need to fetch and transfer for 0 tx to precompile #724

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[DRAFT] No need to fetch and transfer for 0 tx to precompile #724

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13 changes: 7 additions & 6 deletions src/EVM.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -1167,13 +1167,14 @@ precompiledContract this xGas precompileAddr recipient xValue inOffset inSize ou
case result' of
Nothing -> case stk of
x:_ -> case maybeLitWordSimp x of
Just 0 ->
Just 0 -> pure ()
Just 1 -> do
when (xValue /= Lit 0) $ do
fetchAccount (LitAddr recipient) $ \_ -> do
touchAccount self
touchAccount (LitAddr recipient)
transfer self (LitAddr recipient) xValue
pure ()
Just 1 ->
fetchAccount (LitAddr recipient) $ \_ -> do
touchAccount self
touchAccount (LitAddr recipient)
transfer self (LitAddr recipient) xValue
_ -> unexpectedSymArg "unexpected return value from precompile" [x]
_ -> underrun
_ -> pure ()
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