Add fast path for char postinc

src/cc65/expr.c

@@ -1534,6 +1534,14 @@ static void PostInc (ExprDesc* Expr)
     /* Get the data type */
     Flags = TypeOf (Expr->Type);
 
+    /* Fast path: char */
+    if ((Flags & CF_CHAR) == CF_CHAR && ED_GetLoc(Expr) & (E_LOC_GLOBAL | E_LOC_STATIC)) {
+
+        LoadExpr (CF_NONE, Expr);
+        AddCodeLine ("inc %s", ED_GetLabelName(Expr, 0));
+
+    } else {
+
         /* Push the address if needed */
         PushAddr (Expr);
 
@@ -1553,6 +1561,7 @@ static void PostInc (ExprDesc* Expr)
 
         /* Restore the original value in the primary register */
         g_restore (Flags | CF_FORCECHAR);
+    }
 
     /* The result is always an expression, no reference */
     ED_MakeRValExpr (Expr);