Piotr Caban : msvcrt: Don't clear x87 status word x86_64 _clearfp.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f46ef017cd6bf47c69c122e206ef0f4872f566a2
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=f46ef017cd6bf47c69c122e20...

Author: Piotr Caban <piotr(a)codeweavers.com>
Date:   Wed Aug  4 18:04:48 2021 +0200

msvcrt: Don't clear x87 status word x86_64 _clearfp.

Signed-off-by: Piotr Caban <piotr(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/msvcrt/math.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index ce85cb0da43..d45327b8f1f 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -5315,7 +5315,7 @@ unsigned int CDECL _statusfp(void)
 unsigned int CDECL _clearfp(void)
 {
     unsigned int flags = 0;
-#if (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))
+#if (defined(__GNUC__) || defined(__clang__)) && defined(__i386__)
     unsigned long fpword;
 
     __asm__ __volatile__( "fnstsw %0; fnclex" : "=m" (fpword) );
@@ -5333,6 +5333,8 @@ unsigned int CDECL _clearfp(void)
         _setfp_sse(NULL, 0, &sse_sw, _MCW_EM);
         flags |= sse_sw;
     }
+#elif defined(__x86_64__)
+    _setfp_sse(NULL, 0, &flags, _MCW_EM);
 #elif defined(__aarch64__)
     ULONG_PTR fpsr;