Subversion Repositories openrisc_2011-10-31

/* Verify that gimple-level NRV is occurring when values other than the

   return slot are call-clobbered.  */

/* { dg-do compile } */

/* { dg-options "-O -fdump-tree-optimized" } */

typedef struct { int x[20]; void *y; } S;

typedef struct { int a; S b; } T;

S nrv_candidate (void);

void use_result (S, int);

int *ptr;

void foo (void)

{

  S result;

  T result_arr[10][5];

  int i;

  ptr = &i;

  /* i is call-clobbered for these calls, but result and result_arr

     aren't.  */

  result = nrv_candidate ();

  result_arr[3][4].b = nrv_candidate ();

  use_result (result, i);

  use_result (result_arr[3][4].b, i);

}

/* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */

/* { dg-final { cleanup-tree-dump "optimized" } } */