1 files changed, 25 insertions, 0 deletions
diff --git a/cpukit/compiler-rt/lib/builtins/paritydi2.c b/cpukit/compiler-rt/lib/builtins/paritydi2.c
new file mode 100644
index 0000000000..350dceb8ce
--- /dev/null
+++ b/cpukit/compiler-rt/lib/builtins/paritydi2.c
@@ -0,0 +1,25 @@
+//===-- paritydi2.c - Implement __paritydi2 -------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __paritydi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+// Returns: 1 if number of bits is odd else returns 0
+
+COMPILER_RT_ABI int __paritydi2(di_int a) {
+  dwords x;
+  x.all = a;
+  su_int x2 = x.s.high ^ x.s.low;
+  x2 ^= x2 >> 16;
+  x2 ^= x2 >> 8;
+  x2 ^= x2 >> 4;
+  return (0x6996 >> (x2 & 0xF)) & 1;
+}