From b7453e120671eee518994655b0a6db41b673f099 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sigrid=20Solveig=20Hafl=C3=ADnud=C3=B3ttir?=
 <ftrvxmtrx@gmail.com>
Date: Sun, 26 Dec 2021 14:31:24 +0100
Subject: [PATCH] ppu aarch64: sorry, neauoire

---
 src/devices/ppu_aarch64.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/devices/ppu_aarch64.c b/src/devices/ppu_aarch64.c
index d33db23..fb7470e 100644
--- a/src/devices/ppu_aarch64.c
+++ b/src/devices/ppu_aarch64.c
@@ -1,3 +1,4 @@
+#ifdef __aarch64__
 #include <arm_neon.h>
 #include "ppu.h"
 
@@ -11,6 +12,12 @@ ppu_redraw(Ppu *p, Uint32 *screen)
 
 	p->fg.changed = p->bg.changed = 0;
 
+#ifdef __has_builtin
+#if __has_builtin(__builtin_assume)
+	__builtin_assume(p->width > 0 && p->height > 0);
+#endif
+#endif
+
 	for(i = 0; i < (p->width * p->height & ~15); i += 16, fg += 16, bg += 16, screen += 16) {
 		uint8x16_t fg8 = vld1q_u8(fg);
 		uint8x16_t bg8 = vld1q_u8(bg);
@@ -27,3 +34,4 @@ ppu_redraw(Ppu *p, Uint32 *screen)
 	for(; i < p->width * p->height; i++)
 		screen[i] = p->palette[*fg ? *fg : *bg];
 }
+#endif