1 files changed, 27 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/paritysi2.c b/contrib/compiler-rt/lib/paritysi2.c
new file mode 100644
index 0000000..ba05782
--- /dev/null
+++ b/contrib/compiler-rt/lib/paritysi2.c
@@ -0,0 +1,27 @@
+/* ===-- paritysi2.c - Implement __paritysi2 -------------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __paritysi2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+/* Returns: 1 if number of bits is odd else returns 0 */
+
+si_int
+__paritysi2(si_int a)
+{
+    su_int x = (su_int)a;
+    x ^= x >> 16;
+    x ^= x >> 8;
+    x ^= x >> 4;
+    return (0x6996 >> (x & 0xF)) & 1;
+}