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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
/
pr23391.c
1
/* { dg-do compile } */
2
/* { dg-options "-O2" } */
3
4
void
5
foo
(
int
N
)
6
{
7
int
C
;
8
double
R
;
9
10
R
=
0.0
;
11
do
12
{
13
R
+=
0.001
;
14
C
= (
int
) (
R
*
N
);
15
if
(-
R
*
N
<=
R
*
N
)
16
{
17
C
++;
18
}
19
}
20
while
(
C
<
0
);
21
22
return
;
23
}