summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.dg/tree-ssa/alias-18.c
blob: e86acbc19005896b38a9420a79f94a609e1b3f60 (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
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
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-fre-details -fdump-tree-optimized" } */

struct A {
  int i;
  int j;
  float x;
};
struct B {
  struct A a;
  int k;
};

int g;

int test0 (struct A *p, struct A *q)
{
  p->i = 0;
  q->j = -1;
  return p->i;
}

int test1 (struct A *p, struct B *q)
{
  p->i = 1;
  q->k = -1;
  return p->i;
}

int test2 (struct A *p, struct B *q)
{
  p->i = 2;
  q->a.i = -1;
  return p->i;
}

int test3 (struct A *p, struct B *q)
{
  p->i = 3;
  q->a.j = -1;
  return p->i;
}

int test4 (struct A *p)
{
  g = 4;
  p->i = -1;
  return g;
}

int test5 (struct A *p)
{
  p->i = 5;
  g = -1;
  return p->i;
}

int test6 (struct A *p, int *q)
{
  p->i = 6;
  *q = -1;
  return p->i;
}

int test7 (struct A *p, int *q)
{
  p->j = 7;
  *q = -1;
  return p->j;
}

int test8 (struct A *p, int *q)
{
  *q = 8;
  p->x = -1;
  return *q;
}

/* { dg-final { scan-tree-dump "with 0" "fre" } } */
/* { dg-final { scan-tree-dump "with 1" "fre" } } */
/* { dg-final { scan-tree-dump "with 3" "fre" } } */
/* { dg-final { scan-tree-dump "with 4" "fre" } } */
/* { dg-final { scan-tree-dump "with 5" "fre" } } */
/* { dg-final { scan-tree-dump "with 8" "fre" } } */
/* { dg-final { scan-tree-dump-not "return 2;" "optimized" } } */
/* { dg-final { scan-tree-dump-not "return 6;" "optimized" } } */
/* { dg-final { scan-tree-dump-not "return 7;" "optimized" } } */
/* { dg-final { scan-tree-dump-not "return -1;" "optimized" } } */
/* { dg-final { cleanup-tree-dump "fre" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */