forked from OSchip/llvm-project
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
//===-- 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;
|
|
}
|