| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 1 | //===-- clzti2_test.c - Test __clzti2 -------------------------------------===// |
| 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 __clzti2 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 number of leading 0-bits |
| 20 | |
| 21 | // Precondition: a != 0 |
| 22 | |
| 23 | si_int __clzti2(ti_int a); |
| 24 | |
| 25 | int test__clzti2(ti_int a, si_int expected) |
| 26 | { |
| 27 | si_int x = __clzti2(a); |
| 28 | if (x != expected) |
| 29 | { |
| 30 | twords at; |
| 31 | at.all = a; |
| 32 | printf("error in __clzti2(0x%llX%.16llX) = %d, expected %d\n", |
| Daniel Dunbar | cff5248 | 2009-10-27 17:49:07 +0000 | [diff] [blame] | 33 | at.s.high, at.s.low, x, expected); |
| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 34 | } |
| 35 | return x != expected; |
| 36 | } |
| 37 | |
| 38 | char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0}; |
| 39 | |
| 40 | #endif |
| 41 | |
| 42 | int main() |
| 43 | { |
| 44 | #if __x86_64 |
| 45 | const int N = (int)(sizeof(ti_int) * CHAR_BIT); |
| 46 | |
| 47 | if (test__clzti2(0x00000001, N-1)) |
| 48 | return 1; |
| 49 | if (test__clzti2(0x00000002, N-2)) |
| 50 | return 1; |
| 51 | if (test__clzti2(0x00000003, N-2)) |
| 52 | return 1; |
| 53 | if (test__clzti2(0x00000004, N-3)) |
| 54 | return 1; |
| 55 | if (test__clzti2(0x00000005, N-3)) |
| 56 | return 1; |
| 57 | if (test__clzti2(0x0000000A, N-4)) |
| 58 | return 1; |
| 59 | if (test__clzti2(0x1000000A, N*3/4+3)) |
| 60 | return 1; |
| 61 | if (test__clzti2(0x2000000A, N*3/4+2)) |
| 62 | return 1; |
| 63 | if (test__clzti2(0x6000000A, N*3/4+1)) |
| 64 | return 1; |
| 65 | if (test__clzti2(0x8000000AuLL, N*3/4)) |
| 66 | return 1; |
| 67 | if (test__clzti2(0x000005008000000AuLL, 85)) |
| 68 | return 1; |
| 69 | if (test__clzti2(0x020005008000000AuLL, 70)) |
| 70 | return 1; |
| 71 | if (test__clzti2(0x720005008000000AuLL, 65)) |
| 72 | return 1; |
| 73 | if (test__clzti2(0x820005008000000AuLL, 64)) |
| 74 | return 1; |
| 75 | |
| 76 | if (test__clzti2(make_ti(0x0000000080000000LL, 0x8000000800000000LL), 32)) |
| 77 | return 1; |
| 78 | if (test__clzti2(make_ti(0x0000000100000000LL, 0x8000000800000000LL), 31)) |
| 79 | return 1; |
| 80 | if (test__clzti2(make_ti(0x1000000100000000LL, 0x8000000800000000LL), 3)) |
| 81 | return 1; |
| 82 | if (test__clzti2(make_ti(0x7000000100000000LL, 0x8000000800000000LL), 1)) |
| 83 | return 1; |
| 84 | if (test__clzti2(make_ti(0x8000000100000000LL, 0x8000000800000000LL), 0)) |
| 85 | return 1; |
| Joerg Sonnenberger | 7482815 | 2011-05-29 21:43:29 +0000 | [diff] [blame] | 86 | #else |
| 87 | printf("skipped\n"); |
| Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 88 | #endif |
| 89 | return 0; |
| 90 | } |