- Deprecate @compact use for comparison. Old behaviour is enabled using --use-old-compact-eq.

- Switch available for types implementing `@operator(==)`.
- `Type.is_eq` is now true for types with `==` overload.
- Functions being tested for overload are now always checked before test.
- Compile time indexing at compile time in a $typeof was no considered compile time.

src/compiler/llvm_codegen_expr.c

@@ -3573,6 +3573,7 @@ MEMCMP:
 		case TYPE_UNION:
 		case TYPE_STRUCT:
 		case TYPE_BITSTRUCT:
+			assert(compiler.build.old_compact_eq);
 			if (array_base->decl->attr_compact) goto MEMCMP;
 			break;
 		case TYPE_POISONED: