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111
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1 /* PR middle-end/29215 */
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2 /* { dg-do compile } */
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3 /* { dg-options "-O2 -fdump-tree-ccp1" } */
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4
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5 char buf[5 * sizeof (int) + 1] __attribute__((aligned (__alignof__ (int))));
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6
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7 static void
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8 foo (int arg1, int arg2, int arg3, int arg4, int arg5)
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9 {
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10 __builtin_memcpy (buf, &arg1, sizeof (int));
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11 __builtin_memcpy (buf + sizeof (int), &arg2, sizeof (int));
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12 __builtin_memcpy (buf + 2 * sizeof (int), &arg3, sizeof (int));
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13 __builtin_memcpy (buf + 3 * sizeof (int), &arg4, sizeof (int));
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14 __builtin_memcpy (buf + 4 * sizeof (int), &arg5, sizeof (int));
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15 }
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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 union { char buf[4]; int i; } u;
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21 u.i = 0;
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22 u.buf[0] = 'a';
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23 u.buf[1] = 'b';
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24 u.buf[2] = 'c';
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25 u.buf[3] = 'd';
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26 foo (u.i, u.i, u.i, u.i, u.i);
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27 buf[5 * sizeof (int)] = '\0';
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28 __builtin_puts (buf);
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29 return 0;
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30 }
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31
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32 /* { dg-final { scan-tree-dump-not "memcpy" "ccp1" } } */
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