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-rw-r--r--test/Unit/popcountti2_test.c80
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diff --git a/test/Unit/popcountti2_test.c b/test/Unit/popcountti2_test.c
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+++ b/test/Unit/popcountti2_test.c
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+//===-- popcountti2_test.c - Test __popcountti2 ----------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __popcountti2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#if __x86_64
+
+#include "int_lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+// 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.high, at.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()
+{
+#if __x86_64
+ 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;
+
+#endif
+ return 0;
+}