1 files changed, 91 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Headers/fxsrintrin.h b/contrib/llvm-project/clang/lib/Headers/fxsrintrin.h
new file mode 100644
index 000000000000..afee6aa97674
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/Headers/fxsrintrin.h
@@ -0,0 +1,91 @@
+/*===---- fxsrintrin.h - FXSR intrinsic ------------------------------------===
+ *
+ * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ * See https://llvm.org/LICENSE.txt for license information.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __IMMINTRIN_H
+#error "Never use <fxsrintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __FXSRINTRIN_H
+#define __FXSRINTRIN_H
+
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__,  __target__("fxsr")))
+
+/// Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
+///    memory region pointed to by the input parameter \a __p.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> FXSAVE </c> instruction.
+///
+/// \param __p
+///    A pointer to a 512-byte memory region. The beginning of this memory
+///    region should be aligned on a 16-byte boundary.
+static __inline__ void __DEFAULT_FN_ATTRS
+_fxsave(void *__p)
+{
+  __builtin_ia32_fxsave(__p);
+}
+
+/// Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
+///    memory region pointed to by the input parameter \a __p. The contents of
+///    this memory region should have been written to by a previous \c _fxsave
+///    or \c _fxsave64 intrinsic.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> FXRSTOR </c> instruction.
+///
+/// \param __p
+///    A pointer to a 512-byte memory region. The beginning of this memory
+///    region should be aligned on a 16-byte boundary.
+static __inline__ void __DEFAULT_FN_ATTRS
+_fxrstor(void *__p)
+{
+  __builtin_ia32_fxrstor(__p);
+}
+
+#ifdef __x86_64__
+/// Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
+///    memory region pointed to by the input parameter \a __p.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> FXSAVE64 </c> instruction.
+///
+/// \param __p
+///    A pointer to a 512-byte memory region. The beginning of this memory
+///    region should be aligned on a 16-byte boundary.
+static __inline__ void __DEFAULT_FN_ATTRS
+_fxsave64(void *__p)
+{
+  __builtin_ia32_fxsave64(__p);
+}
+
+/// Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
+///    memory region pointed to by the input parameter \a __p. The contents of
+///    this memory region should have been written to by a previous \c _fxsave
+///    or \c _fxsave64 intrinsic.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> FXRSTOR64 </c> instruction.
+///
+/// \param __p
+///    A pointer to a 512-byte memory region. The beginning of this memory
+///    region should be aligned on a 16-byte boundary.
+static __inline__ void __DEFAULT_FN_ATTRS
+_fxrstor64(void *__p)
+{
+  __builtin_ia32_fxrstor64(__p);
+}
+#endif
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif