| /* 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" } } */ |
