1 /* Verify that gimple-level NRV is occurring when values other than the
2    return slot are call-clobbered.  */
3 /* { dg-do compile } */
4 /* { dg-options "-O -fdump-tree-optimized" } */
5 
6 typedef struct { int x[20]; void *y; } S;
7 typedef struct { int a; S b; } T;
8 S nrv_candidate (void);
9 void use_result (S, int);
10 int *ptr;
foo(void)11 void foo (void)
12 {
13   S result;
14   T result_arr[10][5];
15 
16   int i;
17 
18   ptr = &i;
19 
20   /* i is call-clobbered for these calls, but result and result_arr
21      aren't.  */
22   result = nrv_candidate ();
23   result_arr[3][4].b = nrv_candidate ();
24 
25   use_result (result, i);
26   use_result (result_arr[3][4].b, i);
27 }
28 
29 /* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */
30