From fca1f51bf8209a41f8d7cd13ff09f113ac0d87b6 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Thu, 21 Sep 2023 02:38:29 +0200
Subject: [PATCH] ARM64: Fuse negative 32 bit constants into arithmetic ops
 again.

Thanks to Peter Cawley. #1065
---
 src/lj_asm_arm64.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lj_asm_arm64.h b/src/lj_asm_arm64.h
index c2b17737..8673f7df 100644
--- a/src/lj_asm_arm64.h
+++ b/src/lj_asm_arm64.h
@@ -222,7 +222,8 @@ static uint32_t asm_fuseopm(ASMState *as, A64Ins ai, IRRef ref, RegSet allow)
     return A64F_M(ir->r);
   } else if (irref_isk(ref)) {
     int64_t k = get_k64val(as, ref);
-    uint32_t m = logical ? emit_isk13(k, irt_is64(ir->t)) : emit_isk12(k);
+    uint32_t m = logical ? emit_isk13(k, irt_is64(ir->t)) :
+			   emit_isk12(irt_is64(ir->t) ? k : (int32_t)k);
     if (m)
       return m;
   } else if (mayfuse(as, ref)) {