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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
/
scev-2.c
1
/* PR tree-optimization/19899 */
2
/* Decrementing a floating-point variable in a loop caused an ICE. */
3
4
/* { dg-do run } */
5
/* { dg-options "-O -ftree-vectorize" } */
6
7
extern
void
abort
(
void
);
8
9
int
main
()
10
{
11
double
a
=
20
;
12
int
i
;
13
14
for
(
i
=
0
;
i
<
10
; ++
i
)
15
a
-=
2
;
16
17
if
(
a
)
18
abort
();
19
return
0
;
20
}