support SIMD fuzzing in reference interpreter (#3980)

* support SIMD fuzzing in reference interpreter

* formatting

crates/fuzzing/wasm-spec-interpreter/src/lib.rs

@@ -16,6 +16,7 @@ pub enum Value {
     I64(i64),
     F32(i32),
     F64(i64),
+    V128(Vec<u8>),
 }
 
 #[cfg(feature = "has-libinterpret")]

crates/fuzzing/wasm-spec-interpreter/src/with_library.rs

@@ -59,6 +59,7 @@ mod ocaml_bindings {
             Value::I64(i: OCamlInt64),
             Value::F32(i: OCamlInt32),
             Value::F64(i: OCamlInt64),
+            Value::V128(i: OCamlBytes),
         }
     }
 
@@ -103,4 +104,21 @@ mod tests {
             Err("Error(_, \"(Isabelle) trap: load\")".to_string())
         );
     }
+
+    #[test]
+    fn simd_not() {
+        let module = wat::parse_file("tests/simd_not.wat").unwrap();
+
+        let parameters = Some(vec![Value::V128(vec![
+            0, 255, 0, 0, 255, 0, 0, 0, 0, 255, 0, 0, 0, 0, 0, 0,
+        ])]);
+        let results = interpret(&module, parameters.clone()).unwrap();
+
+        assert_eq!(
+            results,
+            vec![Value::V128(vec![
+                255, 0, 255, 255, 0, 255, 255, 255, 255, 0, 255, 255, 255, 255, 255, 255
+            ])]
+        );
+    }
 }