Initial import of compiler-rt.

 -


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@74292 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 50 insertions, 0 deletions

diff --git a/test/Unit/paritysi2_test.c b/test/Unit/paritysi2_test.c
new file mode 100644
index 000000000..f15f90eb9
--- /dev/null
+++ b/test/Unit/paritysi2_test.c
@@ -0,0 +1,50 @@
+//===-- paritysi2_test.c - Test __paritysi2 -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __paritysi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+// Returns: 1 if number of bits is odd else returns 0
+
+si_int __paritysi2(si_int a);
+
+int naive_parity(si_int a)
+{
+    int r = 0;
+    for (; a; a = a & (a - 1))
+        r = ~r;
+    return r & 1;
+}
+
+int test__paritysi2(si_int a)
+{
+    si_int x = __paritysi2(a);
+    si_int expected = naive_parity(a);
+    if (x != expected)
+        printf("error in __paritysi2(0x%X) = %d, expected %d\n",
+               a, x, expected);
+    return x != expected;
+}
+
+char assumption_2[sizeof(si_int)*CHAR_BIT == 32] = {0};
+
+int main()
+{
+    int i;
+    for (i = 0; i < 10000; ++i)
+        if (test__paritysi2(rand()))
+            return 1;
+
+   return 0;
+}