From cb7af652f583d54aad07253a0ff78e478c641f1e Mon Sep 17 00:00:00 2001
From: RSDuck <RSDuck@users.noreply.github.com>
Date: Mon, 18 Nov 2024 20:08:49 +0100
Subject: [PATCH] aarch64 lto broken GPU2D workaround

---
 src/GPU2D_Soft.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/GPU2D_Soft.cpp b/src/GPU2D_Soft.cpp
index 6ad2cd3e..01dade2b 100644
--- a/src/GPU2D_Soft.cpp
+++ b/src/GPU2D_Soft.cpp
@@ -914,6 +914,9 @@ void SoftRenderer::DrawBG_3D()
 template<bool mosaic, SoftRenderer::DrawPixel drawPixel>
 void SoftRenderer::DrawBG_Text(u32 line, u32 bgnum)
 {
+    // workaround for backgrounds missing on aarch64 with lto build
+    asm volatile ("" : : : "memory");
+
     u16 bgcnt = CurUnit->BGCnt[bgnum];
 
     u32 tilesetaddr, tilemapaddr;