feat: add Opcode::modifies_memory back (#1421)

bluealloy · May 15, 2024 · 4763c8b · 4763c8b
1 parent 84d1372
commit 4763c8b
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/crates/interpreter/src/opcode.rs b/crates/interpreter/src/opcode.rs
@@ -313,6 +313,28 @@ impl OpCode {
     pub const fn get(self) -> u8 {
         self.0
     }
+
+    /// Returns true if the opcode modifies memory.
+    /// <https://bluealloy.github.io/revm/crates/interpreter/memory.html#opcodes>
+    /// <https://github.com/crytic/evm-opcodes>
+    #[inline]
+    pub const fn modifies_memory(&self) -> bool {
+        matches!(
+            *self,
+            OpCode::EXTCODECOPY
+                | OpCode::MLOAD
+                | OpCode::MSTORE
+                | OpCode::MSTORE8
+                | OpCode::MCOPY
+                | OpCode::CODECOPY
+                | OpCode::CALLDATACOPY
+                | OpCode::RETURNDATACOPY
+                | OpCode::CALL
+                | OpCode::CALLCODE
+                | OpCode::DELEGATECALL
+                | OpCode::STATICCALL
+        )
+    }
 }
 
 /// Information about opcode, such as name, and stack inputs and outputs.