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Automatically merged updates to draft EIP(s) 2315 (#2510)

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EIPS/eip-2315.md
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@ -37,39 +37,42 @@ These changes do not affect the semantics of existing EVM code.
## Test Cases
```
offset step op stack
0 0 PUSH1 3 []
1 1 JUMPSUB [3]
2 4 STOP []
3 2 JUMPDEST []
4 3 RETURNSUB []
data return
offset step opcode stack stack
0 0 PUSH1 3 [] []
1 1 JUMPSUB [3] [1]
2 4 STOP [] [1]
3 2 JUMPDEST [] [1]
4 3 RETURNSUB [] []
```
The above code should terminate after 4 steps with an empty stack.
```
offset step op stack
0 0 PUSH1 2 []
1 1 JUMPSUB [2]
2 2 JUMPDEST []
3 3 RETURNSUB []
data return
offset step opcode stack stack
0 0 PUSH1 2 [] []
1 1 JUMPSUB [2] [1]
2 2 JUMPDEST [] [1]
3 3 RETURNSUB [] []
```
The above code should terminate after 4 steps with an empty stack.
```
offset step op stack
0 0 PUSH1 2 []
1 1 JUMPSUB [3]
2 8 STOP []
3 2 JUMPDEST []
4 3 PUSH1 7 []
5 4 JUMPSUB [7]
6 7 RETURNSUB []
7 5 JUMPDEST []
8 6 RETURNSUB []
data return
offset step opcode stack stack
0 0 PUSH1 3 [] []
1 1 JUMPSUB [3] [1]
2 8 STOP [] []
3 2 JUMPDEST [] [1]
4 3 PUSH1 7 [] [1]
5 4 JUMPSUB [7] [1,5]
6 7 RETURNSUB [] [1]
7 5 JUMPDEST [] [1]
8 6 RETURNSUB [] [1]
```
The above code should terminate after 8 steps with an empty stack.
The above code should terminate after 8 steps with an empty stack. The above code should terminate after 8 steps with an empty stack.
## Implementations
No clients have implemented this proposal as of yet, but there is a Draft PR on the [evmone interpreter](https://github.com/ethereum/evmone/pull/229).
No clients have implemented this proposal as of yet, but there are Draft PRs on the [evmone](https://github.com/ethereum/evmone/pull/229) and [geth](https://github.com/ethereum/go-ethereum/pull/20619) interpreters.
The new operators proposed here are demonstrated by the following pseudocode, which in seven lines adds a return stack and cases for `JUMPSUB` and `RETURNSUB` to a simple loop-and-switch interpreter.
```