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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
/
20041008-1.c
1
/* { dg-do run } */
2
/* { dg-options "-O2" } */
3
4
struct
A
{
5
int
x
;
6
int
y
;
7
};
8
9
baz
(
struct
A
*
a
)
10
{
11
a
->
x
=
3
;
12
a
->
y
=
2
;
13
}
14
15
foo
(
int
i
)
16
{
17
struct
A a
;
18
19
/* Make sure we can't scalarize 'a'. */
20
baz
(&
a
);
21
22
if
(
i
>
10
)
23
a
.
x
=
i
;
24
else
25
a
.
x
=
i
;
26
27
/* Copy propagation should prove that this predicate is always false. */
28
if
(
a
.
x
!=
i
)
29
link_error
();
30
31
return
a
.
x
;
32
}
33
34
main
()
35
{
36
foo
(
30
);
37
return
0
;
38
}