Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 1 | //===-- popcountti2_test.c - Test __popcountti2 ----------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Howard Hinnant | 9ad441f | 2010-11-16 22:13:33 +0000 | [diff] [blame] | 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file tests __popcountti2 for the compiler_rt library. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #if __x86_64 |
| 15 | |
| 16 | #include "int_lib.h" |
| 17 | #include <stdio.h> |
| 18 | #include <stdlib.h> |
| 19 | |
| 20 | // Returns: count of 1 bits |
| 21 | |
| 22 | si_int __popcountti2(ti_int a); |
| 23 | |
| 24 | int naive_popcount(ti_int a) |
| 25 | { |
| 26 | int r = 0; |
| 27 | for (; a; a = (tu_int)a >> 1) |
| 28 | r += a & 1; |
| 29 | return r; |
| 30 | } |
| 31 | |
| 32 | int test__popcountti2(ti_int a) |
| 33 | { |
| 34 | si_int x = __popcountti2(a); |
| 35 | si_int expected = naive_popcount(a); |
| 36 | if (x != expected) |
| 37 | { |
| 38 | twords at; |
| 39 | at.all = a; |
| 40 | printf("error in __popcountti2(0x%.16llX%.16llX) = %d, expected %d\n", |
Daniel Dunbar | cff5248 | 2009-10-27 17:49:07 +0000 | [diff] [blame] | 41 | at.s.high, at.s.low, x, expected); |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 42 | } |
| 43 | return x != expected; |
| 44 | } |
| 45 | |
| 46 | char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; |
| 47 | char assumption_2[sizeof(di_int)*CHAR_BIT == 64] = {0}; |
| 48 | |
| 49 | #endif |
| 50 | |
| 51 | int main() |
| 52 | { |
| 53 | #if __x86_64 |
| 54 | if (test__popcountti2(0)) |
| 55 | return 1; |
| 56 | if (test__popcountti2(1)) |
| 57 | return 1; |
| 58 | if (test__popcountti2(2)) |
| 59 | return 1; |
| 60 | if (test__popcountti2(0xFFFFFFFFFFFFFFFDLL)) |
| 61 | return 1; |
| 62 | if (test__popcountti2(0xFFFFFFFFFFFFFFFELL)) |
| 63 | return 1; |
| 64 | if (test__popcountti2(0xFFFFFFFFFFFFFFFFLL)) |
| 65 | return 1; |
| 66 | if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFDLL))) |
| 67 | return 1; |
| 68 | if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFELL))) |
| 69 | return 1; |
| 70 | if (test__popcountti2(make_ti(0xFFFFFFFFFFFFFFFFLL, 0xFFFFFFFFFFFFFFFFLL))) |
| 71 | return 1; |
| 72 | int i; |
| 73 | for (i = 0; i < 10000; ++i) |
| 74 | if (test__popcountti2(((ti_int)rand() << 96) | ((ti_int)rand() << 64) | |
| 75 | ((ti_int)rand() << 32) | rand())) |
| 76 | return 1; |
| 77 | |
Joerg Sonnenberger | 7482815 | 2011-05-29 21:43:29 +0000 | [diff] [blame] | 78 | #else |
| 79 | printf("skipped\n"); |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 80 | #endif |
| 81 | return 0; |
| 82 | } |