28 lines
549 B
C
28 lines
549 B
C
/* { dg-do run } */
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/* { dg-options "-O3 -fno-dce -fno-forward-propagate" } */
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void __attribute__ ((noinline, noclone))
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foo (int *a, int n)
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{
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int *lasta = a + n;
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for (; a != lasta; a++)
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{
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*a *= 2;
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a[1] = a[-1] + a[-2];
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}
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}
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int
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main ()
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{
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int a[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
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int r[16] = { 1, 2, 6, 6, 16, 24, 44, 80,
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136, 248, 432, 768, 1360, 2400, 4256, 3760 };
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unsigned i;
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foo (&a[2], 13);
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for (i = 0; i < 8; ++i)
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if (a[i] != r[i])
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__builtin_abort ();
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return 0;
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}
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