fix(jit): should not be unreachable

Cargo.toml

@@ -17,7 +17,6 @@ inherits = "release"
 
 [profile.release]
 lto = true
-codegen-units = 1
 strip = true
 
 [dependencies]

src/jit/helpers.rs

@@ -226,7 +226,7 @@ extern "C" fn helper_neg(rhs: JITValue, _env: *const VmEnv) -> JITValue {
                 float: -unsafe { rhs.data.float },
             },
         },
-        _ => unreachable!(),
+        _ => todo!(),
     }
 }
 
@@ -239,7 +239,7 @@ extern "C" fn helper_not(rhs: JITValue, _env: *const VmEnv) -> JITValue {
                 bool: !unsafe { rhs.data.bool },
             },
         },
-        _ => unreachable!(),
+        _ => todo!(),
     }
 }