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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-dce1" } */
int
foo (int *p)
{
int a = *p;
int b = p != 0;
*p = b;
if (b)
return a;
else
return 0;
}
/* Target with fno-delete-null-pointer-checks should not fold checks */
/* { dg-final { scan-tree-dump "Folding predicate " "vrp1" { target { ! keeps_null_pointer_checks } } } } */
/* { dg-final { scan-tree-dump-times "Folding predicate " 0 "vrp1" { target { keeps_null_pointer_checks } } } } */
/* { dg-final { scan-tree-dump-not "b_. =" "dce1" { target { ! avr-*-* } } } } */
/* { dg-final { scan-tree-dump "b_. =" "dce1" { target { avr-*-* } } } } */
/* { dg-final { cleanup-tree-dump "vrp1" } } */
/* { dg-final { cleanup-tree-dump "dce1" } } */
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