File: pr66187-2.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (97 lines) | stat: -rw-r--r-- 1,719 bytes parent folder | download | duplicates (6)
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
/* PR tree-optimization/66187 */
/* { dg-do run } */
/* { dg-options "-O2 -fwrapv" } */

__attribute__((noinline, noclone)) int
f0 (unsigned char x, unsigned char y)
{
  return (x + y) & 0x2ff;
}

__attribute__((noinline, noclone)) int
f1 (unsigned char x, unsigned char y)
{
  return (x - y) & 0x2ff;
}

__attribute__((noinline, noclone)) int
f2 (signed char x, signed char y)
{
  return (x + y) & -4;
}

__attribute__((noinline, noclone)) int
f3 (signed char x, signed char y)
{
  return (x + y) & 0xf8;
}

__attribute__((noinline, noclone)) int
f4 (signed char x, signed char y)
{
  return (x + y) & 0x78;
}

__attribute__((noinline, noclone)) int
f5 (unsigned char x, unsigned char y)
{
  int a = x;
  int b = y;
  int c = a + b;
  return c & 0x2ff;
}

__attribute__((noinline, noclone)) int
f6 (unsigned char x, unsigned char y)
{
  int a = x;
  int b = y;
  int c = a - b;
  return c & 0x2ff;
}

__attribute__((noinline, noclone)) int
f7 (signed char x, signed char y)
{
  int a = x;
  int b = y;
  int c = a + b;
  return c & -4;
}

__attribute__((noinline, noclone)) int
f8 (signed char x, signed char y)
{
  int a = x;
  int b = y;
  int c = a + b;
  return c & 0xf8;
}

__attribute__((noinline, noclone)) int
f9 (signed char x, signed char y)
{
  int a = x;
  int b = y;
  int c = a + b;
  return c & 0x78;
}

int
main ()
{
  if (__SCHAR_MAX__ != 127 || sizeof (int) != 4)
    return 0;
  if (f0 (0xff, 0xff) != 0xfe
      || f1 (0, 1) != 0x2ff
      || f2 (-2, 1) != -4
      || f3 (-2, 1) != 0xf8
      || f4 (-2, 1) != 0x78
      || f5 (0xff, 0xff) != 0xfe
      || f6 (0, 1) != 0x2ff
      || f7 (-2, 1) != -4
      || f8 (-2, 1) != 0xf8
      || f9 (-2, 1) != 0x78)
    __builtin_abort ();
  return 0;
}