| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 1 | //===-- ffsti2_test.c - Test __ffsti2 -------------------------------------===// |
| 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 __ffsti2 for the compiler_rt library. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #if __x86_64 |
| 15 | |
| 16 | #include "int_lib.h" |
| 17 | #include <stdio.h> |
| 18 | |
| 19 | // Returns: the index of the least significant 1-bit in a, or |
| 20 | // the value zero if a is zero. The least significant bit is index one. |
| 21 | |
| 22 | si_int __ffsti2(ti_int a); |
| 23 | |
| 24 | int test__ffsti2(ti_int a, si_int expected) |
| 25 | { |
| 26 | si_int x = __ffsti2(a); |
| 27 | if (x != expected) |
| 28 | { |
| 29 | twords at; |
| 30 | at.all = a; |
| 31 | printf("error in __ffsti2(0x%llX%.16llX) = %d, expected %d\n", |
| Daniel Dunbar | cff5248 | 2009-10-27 17:49:07 +0000 | [diff] [blame] | 32 | at.s.high, at.s.low, x, expected); |
| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 33 | } |
| 34 | return x != expected; |
| 35 | } |
| 36 | |
| 37 | char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; |
| 38 | |
| 39 | #endif |
| 40 | |
| 41 | int main() |
| 42 | { |
| 43 | #if __x86_64 |
| 44 | if (test__ffsti2(0x00000000, 0)) |
| 45 | return 1; |
| 46 | if (test__ffsti2(0x00000001, 1)) |
| 47 | return 1; |
| 48 | if (test__ffsti2(0x00000002, 2)) |
| 49 | return 1; |
| 50 | if (test__ffsti2(0x00000003, 1)) |
| 51 | return 1; |
| 52 | if (test__ffsti2(0x00000004, 3)) |
| 53 | return 1; |
| 54 | if (test__ffsti2(0x00000005, 1)) |
| 55 | return 1; |
| 56 | if (test__ffsti2(0x0000000A, 2)) |
| 57 | return 1; |
| 58 | if (test__ffsti2(0x10000000, 29)) |
| 59 | return 1; |
| 60 | if (test__ffsti2(0x20000000, 30)) |
| 61 | return 1; |
| 62 | if (test__ffsti2(0x60000000, 30)) |
| 63 | return 1; |
| 64 | if (test__ffsti2(0x80000000uLL, 32)) |
| 65 | return 1; |
| 66 | if (test__ffsti2(0x0000050000000000uLL, 41)) |
| 67 | return 1; |
| 68 | if (test__ffsti2(0x0200080000000000uLL, 44)) |
| 69 | return 1; |
| 70 | if (test__ffsti2(0x7200000000000000uLL, 58)) |
| 71 | return 1; |
| 72 | if (test__ffsti2(0x8000000000000000uLL, 64)) |
| 73 | return 1; |
| 74 | if (test__ffsti2(make_ti(0x8000000800000000uLL, 0), 100)) |
| 75 | return 1; |
| 76 | if (test__ffsti2(make_ti(0x8000000000000000uLL, 0), 128)) |
| 77 | return 1; |
| 78 | |
| Joerg Sonnenberger | 7482815 | 2011-05-29 21:43:29 +0000 | [diff] [blame] | 79 | #else |
| 80 | printf("skipped\n"); |
| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 81 | #endif |
| 82 | return 0; |
| 83 | } |