17 lines
411 B
C
17 lines
411 B
C
/* { dg-do compile } */
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/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
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int a[1000], b[1000];
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void test(void)
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{
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int i;
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for (i = 1; i < 999; i++)
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b[i] = (a[i + 1] + a[i] + a[i - 1]) / 3;
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}
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/* Verify that we used 3 temporary variables for the loop. */
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/* { dg-final { scan-tree-dump-times "Unrolling 3 times." 1 "pcom"} } */
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/* { dg-final { cleanup-tree-dump "pcom" } } */
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