blob: d365075b7291a3bac626879892f15b4d17eebe3d (
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
|
/* { dg-do link } */
/* { dg-options "-O2" } */
/* PR middle-end/18628 exposed a problem in which cse folded a load
from a jump table into the label that was the target of the branch.
Unfortunately, the indirect jump was moved to a different basic
block, and the LABEL_REF copied to the register wasn't enough to
keep the cfg from optimizing the otherwise-unused label away. So
we ended up with a dangling reference to the label. */
int i;
int main()
{
for (;;)
{
switch (i)
{
case 0:
case 1:
return 1;
case 2:
case 3:
return 0;
case 5:
--i;
}
}
}
|
