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From 346de7591f58015d111f4d4f3b001382c04d5557 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Tue, 13 Apr 2021 18:44:25 -0700
Subject: [PATCH] intrincs: Check for __builtin_ia32_rdtsc
on modern gcc ( >=4.6 ) __rdtsc function is implemented using
special builtin function called __builtin_ia32_rdtsc, its actually
a define in gcc, so __has_builtin check fails for __rdtsc even
though it is defined to imply __builtin_ia32_rdtsc(), therefore
check for existence of __builtin_ia32_rdtsc as well
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
mingw-w64-crt/intrincs/rdtsc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mingw-w64-crt/intrincs/rdtsc.c b/mingw-w64-crt/intrincs/rdtsc.c
index bf9c03b..df04711 100644
--- a/mingw-w64-crt/intrincs/rdtsc.c
+++ b/mingw-w64-crt/intrincs/rdtsc.c
@@ -11,7 +11,7 @@
#define __has_builtin(x) 0
#endif
-#if !__has_builtin(__rdtsc)
+#if !__has_builtin(__rdtsc) && !__has_builtin(__builtin_ia32_rdtsc)
unsigned __int64 __rdtsc(void)
{
#ifdef _WIN64
--
2.31.1
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