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

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

msvcrt: Don't clear x87 status word x86_64 _clearfp.
f46ef017 · Piotr Caban · Alexandre Julliard · ab3afe83 · f46ef017
Commit f46ef017 authored Aug 04, 2021 by Piotr Caban Committed by Alexandre Julliard Aug 04, 2021
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math.c dlls/msvcrt/math.c +3 -1

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--- 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;