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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-O1 -fdump-tree-optimized" } */
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3
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4 struct
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5 {
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6 struct
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7 {
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8 int a;
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9 int b;
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10 } a[100];
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11 } a;
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12
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13 typedef __SIZE_TYPE__ size_t;
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14 void foo(size_t);
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15 size_t *bar (void);
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16
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17 int
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18 main (void)
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19 {
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20 size_t *b = bar ();
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21
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22 /* This should be folded. */
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23 foo (&a.a[50].a - &a.a[33].b);
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24 foo ((size_t) &a.a[50].b - (size_t) &a);
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25
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26 /* And this should not. */
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27 foo ((size_t) &b - (size_t) b);
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28 return 0;
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29 }
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30
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31 /* Two of the calls to foo should be folded to just foo(constant). */
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32
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33 /* { dg-final { scan-tree-dump-times "foo \\(\[0-9\]*\\)" 2 "optimized" } } */
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