1 files changed, 62 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Headers/mwaitxintrin.h b/contrib/llvm-project/clang/lib/Headers/mwaitxintrin.h
new file mode 100644
index 000000000000..65f427105b41
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/Headers/mwaitxintrin.h
@@ -0,0 +1,62 @@
+/*===---- mwaitxintrin.h - MONITORX/MWAITX intrinsics ----------------------===
+ *
+ * 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 __X86INTRIN_H
+#error "Never use <mwaitxintrin.h> directly; include <x86intrin.h> instead."
+#endif
+
+#ifndef __MWAITXINTRIN_H
+#define __MWAITXINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__,  __target__("mwaitx")))
+
+/// Establishes a linear address memory range to be monitored and puts
+///    the processor in the monitor event pending state. Data stored in the
+///    monitored address range causes the processor to exit the pending state.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c MONITORX instruction.
+///
+/// \param __p
+///    The memory range to be monitored. The size of the range is determined by
+///    CPUID function 0000_0005h.
+/// \param __extensions
+///    Optional extensions for the monitoring state.
+/// \param __hints
+///    Optional hints for the monitoring state.
+static __inline__ void __DEFAULT_FN_ATTRS
+_mm_monitorx(void * __p, unsigned __extensions, unsigned __hints)
+{
+  __builtin_ia32_monitorx(__p, __extensions, __hints);
+}
+
+/// Used with the \c MONITORX instruction to wait while the processor is in
+///    the monitor event pending state. Data stored in the monitored address
+///    range, or an interrupt, causes the processor to exit the pending state.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the \c MWAITX instruction.
+///
+/// \param __extensions
+///    Optional extensions for the monitoring state, which can vary by
+///    processor.
+/// \param __hints
+///    Optional hints for the monitoring state, which can vary by processor.
+static __inline__ void __DEFAULT_FN_ATTRS
+_mm_mwaitx(unsigned __extensions, unsigned __hints, unsigned __clock)
+{
+  __builtin_ia32_mwaitx(__extensions, __hints, __clock);
+}
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif /* __MWAITXINTRIN_H */