1 files changed, 45 insertions, 0 deletions
diff --git a/clang/lib/Headers/rtmintrin.h b/clang/lib/Headers/rtmintrin.h
new file mode 100644
index 0000000000000..36ff5835173f5
--- /dev/null
+++ b/clang/lib/Headers/rtmintrin.h
@@ -0,0 +1,45 @@
+/*===---- rtmintrin.h - RTM 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 __IMMINTRIN_H
+#error "Never use <rtmintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __RTMINTRIN_H
+#define __RTMINTRIN_H
+
+#define _XBEGIN_STARTED   (~0u)
+#define _XABORT_EXPLICIT  (1 << 0)
+#define _XABORT_RETRY     (1 << 1)
+#define _XABORT_CONFLICT  (1 << 2)
+#define _XABORT_CAPACITY  (1 << 3)
+#define _XABORT_DEBUG     (1 << 4)
+#define _XABORT_NESTED    (1 << 5)
+#define _XABORT_CODE(x)   (((x) >> 24) & 0xFF)
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("rtm")))
+
+static __inline__ unsigned int __DEFAULT_FN_ATTRS
+_xbegin(void)
+{
+  return __builtin_ia32_xbegin();
+}
+
+static __inline__ void __DEFAULT_FN_ATTRS
+_xend(void)
+{
+  __builtin_ia32_xend();
+}
+
+#define _xabort(imm) __builtin_ia32_xabort((imm))
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif /* __RTMINTRIN_H */