WIP: ⚗️ Adding a validator benchmark contract

.env.exemple

@@ -0,0 +1,2 @@
+# Is benchmark write result allowed?
+WRITE_BENCHMARK_RESULT=true

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "lib/solady"]
 	path = lib/solady
 	url = https://github.com/vectorized/solady
+[submodule "lib/forge-gas-metering"]
+	path = lib/forge-gas-metering
+	url = https://github.com/emo-eth/forge-gas-metering

foundry.toml

@@ -9,6 +9,7 @@ cbor_metadata = false
 optimize = true
 via-ir = false
 runs = 1000000
+fs_permissions = [{ access = "read-write", path = "./gas"}]
 
 [profile.deploy]
 via-ir = true

gas/validator/base.json

@@ -0,0 +1,18 @@
+{
+    "global": {
+      "disable": 0,
+      "enable": 0,
+      "fullDeployment": 0
+    },
+    "signature": {
+      "ko_viaKernel": 0,
+      "ko_viaValidator": 0,
+      "viaKernel": 0,
+      "viaValidator": 0
+    },
+    "userOp": {
+      "viaEntryPoint": 0,
+      "validationViaKernel": 0,
+      "validationViaValidator": 0
+    }
+  }

gas/validator/mainnet_ECDSA.json

@@ -0,0 +1,18 @@
+{
+  "global": {
+    "disable": 2418,
+    "enable": 44714,
+    "fullDeployment": 24858
+  },
+  "signature": {
+    "ko_viaKernel": 40973,
+    "ko_viaValidator": 31224,
+    "viaKernel": 40953,
+    "viaValidator": 31214
+  },
+  "userOp": {
+    "viaEntryPoint": 192331,
+    "validationViaKernel": 43195,
+    "validationViaValidator": 31543
+  }
+}

gas/validator/mainnet_FclWebAuthN.json

@@ -0,0 +1,18 @@
+{
+  "global": {
+    "disable": 115792089237316195423570985008687907853269984665640564039457584007913129622417,
+    "enable": 64936,
+    "fullDeployment": 25514
+  },
+  "signature": {
+    "ko_viaKernel": 428301,
+    "ko_viaValidator": 412774,
+    "viaKernel": 425055,
+    "viaValidator": 408794
+  },
+  "userOp": {
+    "viaEntryPoint": 576427,
+    "validationViaKernel": 427216,
+    "validationViaValidator": 414308
+  }
+}

remappings.txt

@@ -1,4 +1,5 @@
 ds-test/=lib/forge-std/lib/ds-test/src/
 forge-std/=lib/forge-std/src/
 solady/=lib/solady/src/
-FreshCryptoLib/=lib/FreshCryptoLib/solidity/src/
+FreshCryptoLib/=lib/FreshCryptoLib/solidity/src/
+gas-metering/=lib/forge-gas-metering/src/

src/utils/ERC4337Utils.sol

@@ -5,6 +5,7 @@ import {IEntryPoint} from "I4337/interfaces/IEntryPoint.sol";
 import {UserOperation} from "I4337/interfaces/UserOperation.sol";
 import "solady/utils/ECDSA.sol";
 import {Vm} from "forge-std/Test.sol";
+import {Kernel} from "../Kernel.sol";
 
 library ERC4337Utils {
     function test() public {}
@@ -68,4 +69,12 @@ library ERC4337Utils {
 
         return keccak256(abi.encode(typeHash, hashedName, hashedVersion, block.chainid, address(verifyingContract)));
     }
+
+    /// @dev Returns the EIP-712 domain separator for the given kernel account.
+    function getDomainSeparator(Kernel kernel) internal view returns (bytes32 domainSeparator) {
+        // Extract a few infos from the kernel
+        (, string memory name, string memory version,,,,) = kernel.eip712Domain();
+        // Build the domain separator
+        domainSeparator = _buildDomainSeparator(name, version, address(kernel));
+    }
 }

src/utils/KernelTestBase.sol

@@ -26,6 +26,7 @@ import {TestERC721} from "../mock/TestERC721.sol";
 import {TestERC1155} from "../mock/TestERC1155.sol";
 
 using ERC4337Utils for IEntryPoint;
+using ERC4337Utils for Kernel;
 
 abstract contract KernelTestBase is Test {
     // to support 0.8.19
@@ -201,7 +202,7 @@ abstract contract KernelTestBase is Test {
         bytes32 hash = ECDSA.toEthSignedMessageHash(bytes(message));
         bytes32 digest = keccak256(
             abi.encodePacked(
-                "\x19\x01", ERC4337Utils._buildDomainSeparator(KERNEL_NAME, KERNEL_VERSION, address(kernel)), hash
+                "\x19\x01", ERC4337Utils.getDomainSeparator(kernel), hash
             )
         );
         bytes memory sig = signHash(digest);
@@ -455,7 +456,7 @@ abstract contract KernelTestBase is Test {
         return keccak256(
             abi.encodePacked(
                 "\x19\x01",
-                ERC4337Utils._buildDomainSeparator(KERNEL_NAME, KERNEL_VERSION, address(kernel)),
+                kernel.getDomainSeparator(),
                 ERC4337Utils.getStructHash(sig, validUntil, validAfter, validator, executor, enableData)
             )
         );