1 files changed, 105 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Headers/rdseedintrin.h b/contrib/llvm-project/clang/lib/Headers/rdseedintrin.h
new file mode 100644
index 000000000000..8a4fe093055b
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/Headers/rdseedintrin.h
@@ -0,0 +1,105 @@
+/*===---- rdseedintrin.h - RDSEED 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 <rdseedintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __RDSEEDINTRIN_H
+#define __RDSEEDINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("rdseed")))
+
+/// Stores a hardware-generated 16-bit random value in the memory at \a __p.
+///
+///    The random number generator complies with NIST SP800-90B and SP800-90C.
+///
+/// \code{.operation}
+/// IF HW_NRND_GEN.ready == 1
+///   Store16(__p, HW_NRND_GEN.data)
+///   result := 1
+/// ELSE
+///   Store16(__p, 0)
+///   result := 0
+/// END
+/// \endcode
+///
+/// \headerfile <immintrin.h>
+///
+/// This intrinsic corresponds to the \c RDSEED instruction.
+///
+/// \param __p
+///    Pointer to memory for storing the 16-bit random number.
+/// \returns 1 if a random number was generated, 0 if not.
+static __inline__ int __DEFAULT_FN_ATTRS
+_rdseed16_step(unsigned short *__p)
+{
+  return (int) __builtin_ia32_rdseed16_step(__p);
+}
+
+/// Stores a hardware-generated 32-bit random value in the memory at \a __p.
+///
+///    The random number generator complies with NIST SP800-90B and SP800-90C.
+///
+/// \code{.operation}
+/// IF HW_NRND_GEN.ready == 1
+///   Store32(__p, HW_NRND_GEN.data)
+///   result := 1
+/// ELSE
+///   Store32(__p, 0)
+///   result := 0
+/// END
+/// \endcode
+///
+/// \headerfile <immintrin.h>
+///
+/// This intrinsic corresponds to the \c RDSEED instruction.
+///
+/// \param __p
+///    Pointer to memory for storing the 32-bit random number.
+/// \returns 1 if a random number was generated, 0 if not.
+static __inline__ int __DEFAULT_FN_ATTRS
+_rdseed32_step(unsigned int *__p)
+{
+  return (int) __builtin_ia32_rdseed32_step(__p);
+}
+
+#ifdef __x86_64__
+/// Stores a hardware-generated 64-bit random value in the memory at \a __p.
+///
+///    The random number generator complies with NIST SP800-90B and SP800-90C.
+///
+/// \code{.operation}
+/// IF HW_NRND_GEN.ready == 1
+///   Store64(__p, HW_NRND_GEN.data)
+///   result := 1
+/// ELSE
+///   Store64(__p, 0)
+///   result := 0
+/// END
+/// \endcode
+///
+/// \headerfile <immintrin.h>
+///
+/// This intrinsic corresponds to the \c RDSEED instruction.
+///
+/// \param __p
+///    Pointer to memory for storing the 64-bit random number.
+/// \returns 1 if a random number was generated, 0 if not.
+static __inline__ int __DEFAULT_FN_ATTRS
+_rdseed64_step(unsigned long long *__p)
+{
+  return (int) __builtin_ia32_rdseed64_step(__p);
+}
+#endif
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif /* __RDSEEDINTRIN_H */