1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_ctzti2
// REQUIRES: int128
#include "int_lib.h"
#include <stdio.h>
#ifdef CRT_HAS_128BIT
// Returns: the number of trailing 0-bits
// Precondition: a != 0
COMPILER_RT_ABI int __ctzti2(ti_int a);
int test__ctzti2(ti_int a, int expected)
{
int x = __ctzti2(a);
if (x != expected)
{
twords at;
at.all = a;
printf("error in __ctzti2(0x%llX%.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};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__ctzti2(0x00000001, 0))
return 1;
if (test__ctzti2(0x00000002, 1))
return 1;
if (test__ctzti2(0x00000003, 0))
return 1;
if (test__ctzti2(0x00000004, 2))
return 1;
if (test__ctzti2(0x00000005, 0))
return 1;
if (test__ctzti2(0x0000000A, 1))
return 1;
if (test__ctzti2(0x10000000, 28))
return 1;
if (test__ctzti2(0x20000000, 29))
return 1;
if (test__ctzti2(0x60000000, 29))
return 1;
if (test__ctzti2(0x80000000uLL, 31))
return 1;
if (test__ctzti2(0x0000050000000000uLL, 40))
return 1;
if (test__ctzti2(0x0200080000000000uLL, 43))
return 1;
if (test__ctzti2(0x7200000000000000uLL, 57))
return 1;
if (test__ctzti2(0x8000000000000000uLL, 63))
return 1;
if (test__ctzti2(make_ti(0x00000000A0000000LL, 0x0000000000000000LL), 93))
return 1;
if (test__ctzti2(make_ti(0xF000000000000000LL, 0x0000000000000000LL), 124))
return 1;
if (test__ctzti2(make_ti(0x8000000000000000LL, 0x0000000000000000LL), 127))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
|
