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111
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1 /* Verify that gimple-level NRV is occurring when values other than the
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2 return slot are call-clobbered. */
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3 /* { dg-do compile } */
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4 /* { dg-options "-O -fdump-tree-optimized" } */
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5
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6 typedef struct { int x[20]; void *y; } S;
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7 typedef struct { int a; S b; } T;
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8 S nrv_candidate (void);
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9 void use_result (S, int);
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10 int *ptr;
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11 void foo (void)
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12 {
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13 S result;
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14 T result_arr[10][5];
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15
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16 int i;
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17
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18 ptr = &i;
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19
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20 /* i is call-clobbered for these calls, but result and result_arr
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21 aren't. */
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22 result = nrv_candidate ();
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23 result_arr[3][4].b = nrv_candidate ();
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24
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25 use_result (result, i);
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26 use_result (result_arr[3][4].b, i);
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27 }
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28
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29 /* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */
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