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 #ifdef __SPU__
7 /* SPU returns aggregates up to 1172 bytes in registers.  */
8 typedef struct { int x[300]; void *y; } S;
9 #else
10 typedef struct { int x[20]; void *y; } S;
11 #endif
12 typedef struct { int a; S b; } T;
13 S nrv_candidate (void);
14 void use_result (S, int);
15 int *ptr;
foo(void)16 void foo (void)
17 {
18   S result;
19   T result_arr[10][5];
20 
21   int i;
22 
23   ptr = &i;
24 
25   /* i is call-clobbered for these calls, but result and result_arr
26      aren't.  */
27   result = nrv_candidate ();
28   result_arr[3][4].b = nrv_candidate ();
29 
30   use_result (result, i);
31   use_result (result_arr[3][4].b, i);
32 }
33 
34 /* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */
35 /* { dg-final { cleanup-tree-dump "optimized" } } */
36