GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcompiler_rt/divdi3.c Lines: 0 6 0.0 %
Date: 2017-11-13 Branches: 0 0 0.0 %

Line Branch Exec Source
1
/* ===-- divdi3.c - Implement __divdi3 -------------------------------------===
2
 *
3
 *                     The LLVM Compiler Infrastructure
4
 *
5
 * This file is dual licensed under the MIT and the University of Illinois Open
6
 * Source Licenses. See LICENSE.TXT for details.
7
 *
8
 * ===----------------------------------------------------------------------===
9
 *
10
 * This file implements __divdi3 for the compiler_rt library.
11
 *
12
 * ===----------------------------------------------------------------------===
13
 */
14
15
#include "int_lib.h"
16
17
/* Returns: a / b */
18
19
COMPILER_RT_ABI di_int
20
__divdi3(di_int a, di_int b)
21
{
22
    const int bits_in_dword_m1 = (int)(sizeof(di_int) * CHAR_BIT) - 1;
23
    di_int s_a = a >> bits_in_dword_m1;           /* s_a = a < 0 ? -1 : 0 */
24
    di_int s_b = b >> bits_in_dword_m1;           /* s_b = b < 0 ? -1 : 0 */
25
    a = (a ^ s_a) - s_a;                         /* negate if s_a == -1 */
26
    b = (b ^ s_b) - s_b;                         /* negate if s_b == -1 */
27
    s_a ^= s_b;                                  /*sign of quotient */
28
    return (__udivmoddi4(a, b, (du_int*)0) ^ s_a) - s_a;  /* negate if s_a == -1 */
29
}