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
|
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-reassoc1" } */
unsigned f1 (unsigned x, unsigned z)
{
unsigned y = x + z;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
y = y + x;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 7" 1 "reassoc1" } } */
unsigned f2 (unsigned x, unsigned z)
{
unsigned y = x + z;
y = y + x;
y = y + x;
y = y + x;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 5" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 4" 1 "reassoc1" } } */
unsigned f3 (unsigned x, unsigned z, unsigned k)
{
unsigned y = x + z;
y = y + x;
y = y + z;
y = y + z;
y = y + k;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 2" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 3" 1 "reassoc1" } } */
unsigned f4 (unsigned x, unsigned z, unsigned k)
{
unsigned y = k + x;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
y = y + z;
return y;
}
/* { dg-final { scan-tree-dump-times "\\\* 8" 1 "reassoc1" } } */
unsigned f5 (unsigned x, unsigned y, unsigned z)
{
return x + y + y + y + y + y \
+ y + z + z + z + z + z + z + z + z + z;
}
/* { dg-final { scan-tree-dump-times "\\\* 6" 1 "reassoc1" } } */
/* { dg-final { scan-tree-dump-times "\\\* 9" 1 "reassoc1" } } */
|
