Docs for block.basefee and basefee() in Yul.

Author: hrkrshnn

docs/cheatsheet.rst

@@ -84,6 +84,7 @@ Global Variables
   to ``abi.encodeWithSelector(bytes4(keccak256(bytes(signature)), ...)```
 - ``bytes.concat(...) returns (bytes memory)``: :ref:`Concatenates variable number of
   arguments to one byte array<bytes-concat>`
+- ``block.basefee`` (``uint``): current block's base fee (`EIP-3198 <https://eips.ethereum.org/EIPS/eip-3198>`_ and `EIP-1559 <https://eips.ethereum.org/EIPS/eip-1559>`_)
 - ``block.chainid`` (``uint``): current chain id
 - ``block.coinbase`` (``address payable``): current block miner's address
 - ``block.difficulty`` (``uint``): current block difficulty

docs/units-and-global-variables.rst

@@ -72,6 +72,7 @@ Block and Transaction Properties
 --------------------------------
 
 - ``blockhash(uint blockNumber) returns (bytes32)``: hash of the given block when ``blocknumber`` is one of the 256 most recent blocks; otherwise returns zero
+- ``block.basefee`` (``uint``): current block's base fee (`EIP-3198 <https://eips.ethereum.org/EIPS/eip-3198>`_ and `EIP-1559 <https://eips.ethereum.org/EIPS/eip-1559>`_)
 - ``block.chainid`` (``uint``): current chain id
 - ``block.coinbase`` (``address payable``): current block miner's address
 - ``block.difficulty`` (``uint``): current block difficulty

docs/yul.rst

@@ -879,7 +879,9 @@ the ``dup`` and ``swap`` instructions as well as ``jump`` instructions, labels a
 | log4(p, s, t1, t2, t3,  | `-` | F | log with topics t1, t2, t3, t4 and data mem[p...(p+s))          |
 | t4)                     |     |   |                                                                 |
 +-------------------------+-----+---+-----------------------------------------------------------------+
-| chainid()               |     | I | ID of the executing chain (EIP 1344)                            |
+| chainid()               |     | I | ID of the executing chain (EIP-1344)                            |
++-------------------------+-----+---+-----------------------------------------------------------------+
+| basefee()               |     | L | current block's base fee (EIP-3198 and EIP-1559)                |
 +-------------------------+-----+---+-----------------------------------------------------------------+
 | origin()                |     | F | transaction sender                                              |
 +-------------------------+-----+---+-----------------------------------------------------------------+