From ee451fe345cc86263d0ab5d0f81aa3c296595516 Mon Sep 17 00:00:00 2001
From: TellowKrinkle <tellowkrinkle@gmail.com>
Date: Thu, 24 Nov 2022 20:43:54 -0600
Subject: [PATCH] Common: Fix slow emulator startup on M1s

---
 common/AlignedMalloc.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/AlignedMalloc.cpp b/common/AlignedMalloc.cpp
index adc76fdb8e..5db3b40246 100644
--- a/common/AlignedMalloc.cpp
+++ b/common/AlignedMalloc.cpp
@@ -28,6 +28,11 @@ void* _aligned_malloc(size_t size, size_t align)
 #if defined(__USE_ISOC11) && !defined(ASAN_WORKAROUND) // not supported yet on gcc 4.9
 	return aligned_alloc(align, size);
 #else
+#ifdef __APPLE__
+	// MacOS has a bug where posix_memalign is ridiculously slow on unaligned sizes
+	// This especially bad on M1s for some reason
+	size = (size + align - 1) & ~(align - 1);
+#endif
 	void* result = 0;
 	posix_memalign(&result, align, size);
 	return result;