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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
/
pr23115.c
1
/* { dg-do run } */
2
/* { dg-options "-O2 -ftree-vectorize" } */
3
4
extern
void
abort
(
void
);
5
6
#define MIN2(a,b) (((a)<(b)) ? (a) : (b))
7
#define MAX2(a,b) (((a)>(b)) ? (a) : (b))
8
9
double
p
[
2
] = {
4
.,
5
. };
10
11
int
main
()
12
{
13
long
j
;
14
double
R
,
n
,
x
;
15
16
n
=
1
.
e300
;
17
x
= -
1
.
e300
;
18
for
(
j
=
0
;
j
<
2
;
j
++ )
19
{
20
x
=
MAX2
(
x
,
p
[
j
]);
21
n
=
MIN2
(
n
,
p
[
j
]);
22
}
23
R
=
x
-
n
;
24
25
if
(
R
<
0.1
)
26
abort
();
27
28
return
0
;
29
}