From 333cc2ccf86e6dbbcbee81ab59498ef3ffb1df9d Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <Patrick.Pelissier@gmail.com>
Date: Sun, 12 May 2024 19:50:22 +0200
Subject: [PATCH] Provide prefetch on non GCC target & compatible

---
 m-core.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/m-core.h b/m-core.h
index fa14ffc5..8e88b24a 100644
--- a/m-core.h
+++ b/m-core.h
@@ -147,7 +147,10 @@
 #if defined(__GNUC__)
 # define M_PREFETCH(p)           __builtin_prefetch((p), 0, 0)
 #else
-# define M_PREFETCH(p)           (void) 0
+# define M_PREFETCH(p) do {                                                   \
+    volatile char m_c = *(volatile char *) (p);                               \
+    (void) m_c;                                                               \
+  } while (0)
 #endif
 
 /* Ignore some warnings detected by some compilers in the library.