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re PR tree-optimization/33291 (a+=2; a+=2 not simplified to a+=4; with -O3 ...
[gcc.git]
/
gcc
/
testsuite
/
gcc.dg
/
tree-ssa
/
pr22018.c
1
/* { dg-do run } */
2
/* { dg-options -O2 } */
3
4
void
abort
(
void
);
5
void
g
(
int
);
6
void
f
(
int
l
)
7
{
8
unsigned
i
;
9
for
(
i
=
0
;
i
<
l
;
i
++)
10
{
11
int
y
=
i
;
12
/* VRP was wrongfully computing z's range to be [0, 0] instead
13
of [-INF, 0]. */
14
int
z
=
y
*-
32
;
15
g
(
z
);
16
}
17
}
18
19
void
g
(
int
i
)
20
{
21
static int
x
=
0
;
22
if
(
i
==
0
)
23
x
++;
24
if
(
x
>
1
)
25
abort
();
26
}
27
28
int
main
(
void
)
29
{
30
f
(
3
);
31
return
0
;
32
}