aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/pr32964.c
blob: 18e73f939cd72ee468eaf23d2d34421bc95a9b75 (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
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-optimized" } */

union A
{
 float a;
};

float t(float a)
{
  union A a1, a2, a3;
  int i;

  a1.a = a;
  for(i = 0; i<100; i++)
    {
      a2 = a1;
      a2.a += a;
      a1 = a2;
  }
  a3 = a1;
  return a3.a;
}

/* { dg-final { scan-tree-dump-times "union" 0 "optimized"} } */
/* { dg-final { cleanup-tree-dump "optimized" } } */