Simplify untagRib

Removing a misleading comment. This is the one we probably want to inline somehow.
mossprescott · Apr 23, 2024 · 0fb6394 · 0fb6394
1 parent cebb4c0
commit 0fb6394
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/alt/scheme/Obj.jack b/alt/scheme/Obj.jack
@@ -31,11 +31,8 @@ class Obj {
     /* Convert to a raw pointer. */
     function Rib untagRib(Obj obj) {
         // TODO: (optionally) check the tag bit
-        var int raw;
 
-        // Note: first negate to avoid overflow
-        let raw = -obj;
-        return raw + raw + raw;
+        return -(obj + obj + obj);
     }
 
     /* Strip off the sig bit. */