From d2d37470bcaa3af3a9e7bda266c6884b13e9afda Mon Sep 17 00:00:00 2001
From: phfr24 <phfr24@inf.ufpr.br>
Date: Mon, 15 Dec 2025 21:37:33 -0300
Subject: [PATCH] microoptimization for update_cell

---
 lifeboot.asm | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/lifeboot.asm b/lifeboot.asm
index d4ba435..67e7ce9 100644
--- a/lifeboot.asm
+++ b/lifeboot.asm
@@ -291,11 +291,9 @@ mov dx, [es:si + bx]        ; dl = cell current state
 cmp dl, ALIVE               ; if (ALIVE) {
 jne .else
 
-cmp ax, 2                   ;     if (n < 2)
-jl .dead                    ;         return DEAD
-
-cmp ax, 3                   ;     if (n > 3)
-jg .dead                    ;         return DEAD
+shr ax, 1
+xor ax, 1                   ;     if (n != 2 || n != 3)
+jnz .dead                   ;         return DEAD (likely)
 
 jmp .alive                  ;     return ALIVE
 
-- 
2.54.0