Set default EVM version to London.

Author: hrkrshnn

.circleci/soltest_all.sh

@@ -29,7 +29,7 @@ set -e
 REPODIR="$(realpath "$(dirname "$0")"/..)"
 
 EVM_VALUES=(homestead byzantium constantinople petersburg istanbul berlin london)
-DEFAULT_EVM=berlin
+DEFAULT_EVM=london
 [[ " ${EVM_VALUES[*]} " =~ $DEFAULT_EVM ]]
 OPTIMIZE_VALUES=(0 1)
 STEPS=$(( 1 + ${#EVM_VALUES[@]} * ${#OPTIMIZE_VALUES[@]} ))

Changelog.md

@@ -7,6 +7,7 @@ Language Features:
 
 Compiler Features:
  * AssemblyStack: Also run opcode-based optimizer when compiling Yul code.
+ * EVM: Set the default EVM version to "London".
  * Yul EVM Code Transform: Do not reuse stack slots that immediately become unreachable.
  * Yul EVM Code Transform: Also pop unused argument slots for functions without return variables (under the same restrictions as for functions with return variables).
  * Yul Optimizer: Move function arguments and return variables to memory with the experimental Stack Limit Evader (which is not enabled by default).

docs/using-the-compiler.rst

@@ -169,10 +169,12 @@ at each version. Backward compatibility is not guaranteed between each version.
    - The compiler behaves the same way as with constantinople.
 - ``istanbul``
    - Opcodes ``chainid`` and ``selfbalance`` are available in assembly.
-- ``berlin`` (**default**)
+- ``berlin``
    - Gas costs for ``SLOAD``, ``*CALL``, ``BALANCE``, ``EXT*`` and ``SELFDESTRUCT`` increased. The
      compiler assumes cold gas costs for such operations. This is relevant for gas estimation and
      the optimizer.
+- ``london`` (**default**)
+   - The block's base fee (`EIP-3198 <https://eips.ethereum.org/EIPS/eip-3198>`_ and `EIP-1559 <https://eips.ethereum.org/EIPS/eip-1559>`_) can be accessed via the global ``block.basefee`` or ``basefee()`` in inline assembly.
 
 
 .. index:: ! standard JSON, ! --standard-json

liblangutil/EVMVersion.h

@@ -102,7 +102,7 @@ class EVMVersion:
 
 	EVMVersion(Version _version): m_version(_version) {}
 
-	Version m_version = Version::Berlin;
+	Version m_version = Version::London;
 };
 
 }

scripts/tests.sh

@@ -86,7 +86,7 @@ EVM_VERSIONS="homestead byzantium"
 
 if [ -z "$CI" ]
 then
-    EVM_VERSIONS+=" constantinople petersburg istanbul berlin"
+    EVM_VERSIONS+=" constantinople petersburg istanbul berlin london"
 fi
 
 # And then run the Solidity unit-tests in the matrix combination of optimizer / no optimizer
@@ -96,9 +96,9 @@ do
     for vm in $EVM_VERSIONS
     do
         FORCE_ABIV1_RUNS="no"
-        if [[ "$vm" == "berlin" ]]
+        if [[ "$vm" == "london" ]]
         then
-            FORCE_ABIV1_RUNS="no yes" # run both in berlin
+            FORCE_ABIV1_RUNS="no yes" # run both in london
         fi
         for abiv1 in $FORCE_ABIV1_RUNS
         do

solc/CommandLineParser.cpp

@@ -523,7 +523,7 @@ General Information)").c_str(),
 			g_strEVMVersion.c_str(),
 			po::value<string>()->value_name("version")->default_value(EVMVersion{}.name()),
 			"Select desired EVM version. Either homestead, tangerineWhistle, spuriousDragon, "
-			"byzantium, constantinople, petersburg, istanbul or berlin."
+			"byzantium, constantinople, petersburg, istanbul, berlin or london."
 		)
 		(
 			g_strExperimentalViaIR.c_str(),

test/externalTests/common.sh

@@ -173,7 +173,7 @@ function run_install
 
     replace_version_pragmas
     force_truffle_solc_modules "$soljson"
-    force_truffle_compiler_settings "$CONFIG" "${DIR}/solc" "$OPTIMIZER_LEVEL" berlin
+    force_truffle_compiler_settings "$CONFIG" "${DIR}/solc" "$OPTIMIZER_LEVEL" london
 
     $init_fn
 }
@@ -234,7 +234,7 @@ function truffle_run_test
     for level in $(seq "$OPTIMIZER_LEVEL" 3)
     do
         clean
-        force_truffle_compiler_settings "$CONFIG" "${DIR}/solc" "$level" berlin
+        force_truffle_compiler_settings "$CONFIG" "${DIR}/solc" "$level" london
 
         printLog "Running compile function..."
         $compile_fn

test/libsolidity/StandardCompiler.cpp

@@ -1067,9 +1067,11 @@ BOOST_AUTO_TEST_CASE(evm_version)
 	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"istanbul\"") != string::npos);
 	result = compile(inputForVersion("\"evmVersion\": \"berlin\","));
 	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"berlin\"") != string::npos);
+	result = compile(inputForVersion("\"evmVersion\": \"london\","));
+	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"london\"") != string::npos);
 	// test default
 	result = compile(inputForVersion(""));
-	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"berlin\"") != string::npos);
+	BOOST_CHECK(result["contracts"]["fileA"]["A"]["metadata"].asString().find("\"evmVersion\":\"london\"") != string::npos);
 	// test invalid
 	result = compile(inputForVersion("\"evmVersion\": \"invalid\","));
 	BOOST_CHECK(result["errors"][0]["message"].asString() == "Invalid EVM version requested.");