aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c
blob: 32b068275c183bce0b4ade81313d0a11d293332f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-pre-stats" } */

struct X { int i; };

int foo (int x)
{
  struct X a;
  struct X b;
  struct X *p;
  a.i = 1;
  b.i = 2;
  if (x)
    p = &a;
  else
    p = &b;
  return p->i;
}

/* We should eliminate the load from p for a PHI node with values 1 and 2.  */

/* { dg-final { scan-tree-dump "Eliminated: 1" "pre" } } */
/* { dg-final { cleanup-tree-dump "pre" } } */