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111
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1 /* { dg-do compile } */
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2 /* { dg-require-effective-target vect_int } */
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3 /* { dg-additional-options "--param=vect-max-version-for-alias-checks=2" } */
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4
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5 /* A test case showing four potential alias checks between a[i] and b[0], b[1],
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6 b[i+1] and b[i+2]. With alias check merging enabled, those four checks
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7 can be merged into two, and the loop will be vectorized with
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8 vect-max-version-for-alias-checks=2. */
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9
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10 void foo (int *a, int *b)
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11 {
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12 int i;
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13 for (i = 0; i < 1000; ++i)
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14 a[i] = b[0] + b[1] + b[i+1] + b[i+2];
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15 }
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16
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17 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
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