30 lines
705 B
C
30 lines
705 B
C
/* Verify that gimple-level NRV is occurring when values other than the
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return slot are call-clobbered. */
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/* { dg-do compile } */
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/* { dg-options "-O -fdump-tree-optimized" } */
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typedef struct { int x[20]; void *y; } S;
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typedef struct { int a; S b; } T;
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S nrv_candidate (void);
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void use_result (S, int);
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int *ptr;
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void foo (void)
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{
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S result;
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T result_arr[10][5];
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int i;
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ptr = &i;
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/* i is call-clobbered for these calls, but result and result_arr
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aren't. */
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result = nrv_candidate ();
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result_arr[3][4].b = nrv_candidate ();
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use_result (result, i);
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use_result (result_arr[3][4].b, i);
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}
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/* { dg-final { scan-tree-dump-times "return slot optimization" 2 "optimized" } } */
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