...

src/compiler/NubLang/Generation/QBE/QBEGenerator.cs

@@ -97,28 +97,21 @@ public partial class QBEGenerator
         return _writer.ToString();
     }
 
-    private string QBEAssign(NubType type)
+    private static string QBEAssign(NubType type)
     {
-        return type switch
+        if (type.IsSimpleType(out var simpleType, out _))
         {
-            NubComplexType => "=l",
-            NubSimpleType simpleType => simpleType switch
+            return simpleType.StorageSize switch
             {
-                NubFuncType or NubFuncType => "=l",
-                NubPrimitiveType primitiveType => primitiveType.Kind switch
-                {
-                    PrimitiveTypeKind.I64 or PrimitiveTypeKind.U64 => "=l",
-                    PrimitiveTypeKind.I32 or PrimitiveTypeKind.U32 => "=w",
-                    PrimitiveTypeKind.I16 or PrimitiveTypeKind.U16 => "=w",
-                    PrimitiveTypeKind.I8 or PrimitiveTypeKind.U8 or PrimitiveTypeKind.Bool => "=w",
-                    PrimitiveTypeKind.F64 => "=d",
-                    PrimitiveTypeKind.F32 => "=s",
-                    _ => throw new ArgumentOutOfRangeException()
-                },
-                _ => throw new NotSupportedException($"'{type}' type cannot be used in variables")
-            },
-            _ => throw new UnreachableException()
-        };
+                StorageSize.I8 or StorageSize.U8 or StorageSize.I16 or StorageSize.U16 or StorageSize.I32 or StorageSize.U32 => "=w",
+                StorageSize.I64 or StorageSize.U64 => "=l",
+                StorageSize.F32 => "=s",
+                StorageSize.F64 => "=d",
+                _ => throw new ArgumentOutOfRangeException(nameof(simpleType.StorageSize))
+            };
+        }
+
+        return "=l";
     }
 
     private void EmitStore(NubType type, string value, string destination)