execution_chain

Author: advaita-saha

PrecompileTests.md

@@ -2,7 +2,7 @@ PrecompileTests
 ===
 ## PrecompileTests
 ```diff
-- P256Verify.json                                                 Fail
++ P256Verify.json                                                 OK
 + blake2F.json                                                    OK
 + blsG1Add.json                                                   OK
 + blsG1MultiExp.json                                              OK
@@ -25,7 +25,7 @@ PrecompileTests
 + ripemd160.json                                                  OK
 + sha256.json                                                     OK
 ```
-OK: 21/22 Fail: 1/22 Skip: 0/22
+OK: 22/22 Fail: 0/22 Skip: 0/22
 ## eest
 ```diff
 + add_G1_bls.json                                                 OK
@@ -50,4 +50,4 @@ OK: 21/22 Fail: 1/22 Skip: 0/22
 OK: 18/18 Fail: 0/18 Skip: 0/18
 
 ---TOTAL---
-OK: 39/40 Fail: 1/40 Skip: 0/40
+OK: 40/40 Fail: 0/40 Skip: 0/40

execution_chain/evm/interpreter/gas_costs.nim

@@ -494,7 +494,6 @@ template gasCosts(fork: EVMFork, prefix, ResultGasCostsName: untyped) =
           # 0s: Stop and Arithmetic Operations
           Stop:            fixed GasZero,
           Add:             fixed GasVeryLow,
-          Clz:             fixed GasLow,
           Mul:             fixed GasLow,
           Sub:             fixed GasVeryLow,
           Div:             fixed GasLow,
@@ -521,6 +520,7 @@ template gasCosts(fork: EVMFork, prefix, ResultGasCostsName: untyped) =
           Shl:             fixed GasVeryLow,
           Shr:             fixed GasVeryLow,
           Sar:             fixed GasVeryLow,
+          Clz:             fixed GasVeryLow,
 
           # 20s: SHA3
           Sha3:            memExpansion `prefix gasSha3`,