From 0f2fd824e617c509cb904e83da5658e975868c16 Mon Sep 17 00:00:00 2001
From: George Hotz <geohot@gmail.com>
Date: Sun, 28 Dec 2025 13:41:24 +0000
Subject: [PATCH] bug fix

---
 tinygrad/renderer/rdna_regalloc.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tinygrad/renderer/rdna_regalloc.py b/tinygrad/renderer/rdna_regalloc.py
index abda255294..d20a528d73 100644
--- a/tinygrad/renderer/rdna_regalloc.py
+++ b/tinygrad/renderer/rdna_regalloc.py
@@ -436,8 +436,8 @@ class RDNARegAlloc:
     self._last_use[uop] = pos
 
   def get_last_use(self, uop: UOp) -> int:
-    """Get last use position for a UOp."""
-    return self._last_use.get(uop, -1)
+    """Get effective death position for a UOp (considering alias groups)."""
+    return self._get_death_pos(uop)
 
   def is_vgpr_owner(self, reg: int) -> bool:
     """Check if register has an owner."""