File: pr61839_2.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A7-2018-q2-5
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 539,188 kB
  • sloc: ansic: 2,739,935; cpp: 848,238; ada: 602,637; makefile: 62,919; asm: 55,635; xml: 46,238; exp: 23,020; sh: 19,616; python: 6,371; pascal: 3,889; awk: 3,278; perl: 2,691; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (54 lines) | stat: -rw-r--r-- 1,154 bytes parent folder | download | duplicates (4)
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
/* PR tree-optimization/61839.  */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-evrp" } */
/* { dg-require-effective-target int32plus } */

__attribute__ ((noinline))
int foo ()
{
  int a = -1;
  volatile unsigned b = 1U;
  int c = 1;
  c = (a + 972195718) / (b ? 2 : 0);
  if (c == 486097858)
    ;
  else
    __builtin_abort ();
  return 0;
}

__attribute__ ((noinline))
int bar ()
{
  int a = -1;
  volatile unsigned b = 1U;
  int c = 1;
  c = (a + 972195718) % (b ? 2 : 0);
  if (c == 1)
    ;
  else
    __builtin_abort ();
  return 0;
}

__attribute__ ((noinline))
int bar2 ()
{
  int a = -1;
  volatile unsigned b = 1U;
  int c = 1;
  c = (a + 972195716) % (b ? 1 : 2);
  if (c == 0)
    ;
  else
    __builtin_abort ();
  return 0;
}


/* Dont optimize 972195717 / 0 in function foo.  */
/* { dg-final { scan-tree-dump-times "972195717 / " 1  "evrp" } } */
/* Dont optimize 972195717 % 0 in function bar.  */
/* { dg-final { scan-tree-dump-times "972195717 % " 1 "evrp" } } */
/* May optimize in function bar2, but EVRP doesn't perform this yet.  */
/* { dg-final { scan-tree-dump-times "972195715 % " 0 "evrp" { xfail *-*-* } } } */