rt_gccstream/gcc/testsuite/gcc.dg/tree-ssa/struct-aliasing-2.c

19 lines
409 B
C

/* { dg-do "compile" } */
/* { dg-options "-O2 -fdump-tree-fre" } */
struct S { unsigned f; };
int
foo ( struct S *p)
{
int *q = (int *)&p->f;
int i = *q;
return i + p->f;
}
/* There should only be one load of p->f because fwprop can change *(int *)&p->f into just (int)p->f. */
/* { dg-final { scan-tree-dump-times "p_.\\\(D\\\)->f" 1 "fre" } } */
/* { dg-final { cleanup-tree-dump "fre" } } */