From 7c4cbbf8d9b0deb06f67cd402a22136014abba45 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Wed, 5 Aug 2020 13:24:14 +0300
Subject: checkasm: Use mach_absolute_time() as timer on darwin on ARM

The cycle counter instructions aren't accessible on iOS/macOS on
ARM. The mach_absolute_time() function has much coarser precision,
but is the least bad option available.
---
 tests/checkasm/checkasm.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'tests')

diff --git a/tests/checkasm/checkasm.h b/tests/checkasm/checkasm.h
index 27c28d7..2a3391b 100644
--- a/tests/checkasm/checkasm.h
+++ b/tests/checkasm/checkasm.h
@@ -127,6 +127,9 @@ static inline uint64_t readtime(void) {
 }
 #define readtime readtime
 #endif
+#elif (ARCH_AARCH64 || ARCH_ARM) && defined(__APPLE__)
+#include <mach/mach_time.h>
+#define readtime() mach_absolute_time()
 #elif ARCH_AARCH64
 #ifdef _MSC_VER
 #include <windows.h>
-- 
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