Signed-off-by: Martin Storsjö <[email protected]>
---
mingw-w64-headers/crt/_mingw.h.in | 19 +++++++++++++++++++
mingw-w64-headers/crt/intrin.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/mingw-w64-headers/crt/_mingw.h.in
b/mingw-w64-headers/crt/_mingw.h.in
index 087fce88d..3a83bbeff 100644
--- a/mingw-w64-headers/crt/_mingw.h.in
+++ b/mingw-w64-headers/crt/_mingw.h.in
@@ -622,6 +622,25 @@ __MINGW_INTRIN_INLINE void __cdecl __MINGW_ATTRIB_NORETURN
__fastfail(unsigned i
}
#endif /* __MINGW_FASTFAIL_IMPL == 1 */
+#ifdef __has_builtin
+#define __MINGW_PREFETCH_IMPL !__has_builtin(__prefetch)
+#else
+#define __MINGW_PREFETCH_IMPL 1
+#endif
+#if __MINGW_PREFETCH_IMPL == 1
+#if defined(__arm__) || defined(__aarch64__)
+void __cdecl __prefetch(const void *addr);
+__MINGW_INTRIN_INLINE void __cdecl __prefetch(const void *addr)
+{
+#if defined(__arm__)
+ __asm__ __volatile__("pld [%0]"::"r"(addr));
+#elif defined(__aarch64__)
+ __asm__ __volatile__("prfm pldl1keep, [%0]"::"r"(addr));
+#endif
+}
+#endif /* defined(__arm__) || defined(__aarch64__) */
+#endif /* __MINGW_PREFETCH_IMPL == 1 */
+
#endif /* defined(__MINGW_INTRIN_INLINE) */
/* mingw-w64 specific functions: */
diff --git a/mingw-w64-headers/crt/intrin.h b/mingw-w64-headers/crt/intrin.h
index 5dcbca9b0..69653e440 100644
--- a/mingw-w64-headers/crt/intrin.h
+++ b/mingw-w64-headers/crt/intrin.h
@@ -504,6 +504,7 @@ extern "C" {
__MACHINEI(unsigned short __cdecl _outpw(unsigned short,unsigned short))
__MACHINEI(unsigned short __cdecl outpw(unsigned short,unsigned short))
__MACHINECE(void __cdecl __prefetch(unsigned long *addr))
+ __MACHINEARM_ARM64(void __cdecl __prefetch(const void *addr))
__MACHINEIA64(__MINGW_EXTENSION void __ptcl(__int64,__int64))
__MACHINEIA64(__MINGW_EXTENSION void __ptcg(__int64,__int64))
__MACHINEIA64(__MINGW_EXTENSION void __ptcga(__int64,__int64))
--
2.25.1
_______________________________________________
Mingw-w64-public mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
