1 files changed, 82 insertions, 0 deletions
diff --git a/test/builtins/Unit/popcountti2_test.c b/test/builtins/Unit/popcountti2_test.c
new file mode 100644
index 0000000000000..d17e03afd6659
--- /dev/null
+++ b/test/builtins/Unit/popcountti2_test.c
@@ -0,0 +1,82 @@
+//===-- popcountti2_test.c - Test __popcountti2 ----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __popcountti2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef CRT_HAS_128BIT
+
+// Returns: count of 1 bits
+
+si_int __popcountti2(ti_int a);
+
+int naive_popcount(ti_int a)
+{
+    int r = 0;
+    for (; a; a = (tu_int)a >> 1)
+        r += a & 1;
+    return r;
+}
+
+int test__popcountti2(ti_int a)
+{
+    si_int x = __popcountti2(a);
+    si_int expected = naive_popcount(a);
+    if (x != expected)
+    {
+        twords at;
+        at.all = a;
+        printf("error in __popcountti2(0x%.16llX%.16llX) = %d, expected %d\n",
+               at.s.high, at.s.low, x, expected);
+    }
+    return x != expected;
+}
+
+char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
+char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0};
+
+#endif
+
+int main()
+{
+#ifdef CRT_HAS_128BIT
+    if (test__popcountti2(0))
+        return 1;
+    if (test__popcountti2(1))
+        return 1;
+    if (test__popcountti2(2))
+        return 1;
+    if (test__popcountti2(0xFFFFFFFFFFFFFFFDLL))
+        return 1;
+    if (test__popcountti2(0xFFFFFFFFFFFFFFFELL))
+        return 1;
+    if (test__popcountti2(0xFFFFFFFFFFFFFFFFLL))
+        return 1;
+    if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFDLL)))
+        return 1;
+    if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL)))
+        return 1;
+    if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL)))
+        return 1;
+    int i;
+    for (i = 0; i < 10000; ++i)
+        if (test__popcountti2(((ti_int)rand() << 96) | ((ti_int)rand() << 64) |
+                              ((ti_int)rand() << 32) | rand()))
+            return 1;
+
+#else
+    printf("skipped\n");
+#endif
+   return 0;
+}