blob: 638189e66e569c6d2786ed8b3e1c859d9b185c72 (
plain)
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 *-*-* } } } */
|