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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [tree-ssa/] [ldist-3.c] - Blame information for rev 298

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Line No. Rev Author Line
1 298 jeremybenn
/* { dg-do compile { target int32plus } } */
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/* { dg-options "-O2 -ftree-loop-distribution -fdump-tree-ldist-all" } */
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int loop1 (int k)
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{
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  unsigned int i;
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  int a[10000], b[10000], c[10000], d[10000];
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  a[0] = k; a[3] = k*2;
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  c[1] = k+1;
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  for (i = 2; i < (10000-1); i ++)
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    {
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      a[i] = k * i; /* S1 */
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      b[i] = a[i-2] + k; /* S2 */
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      c[i] = b[i] + a[i+1]; /* S3 */
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      d[i] = c[i-1] + k + i; /* S4 */
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    }
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  /*
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    Dependences:
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    S1 -> S2 (flow, level 1)
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    S1 -> S3 (anti, level 1)
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    S2 -> S3 (flow, level 0)
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    S3 -> S4 (flow, level 1)
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    There are three partitions: {S1, S3}, {S2} and {S4}.
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    The cost model should fuse together all the partitions, as they
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    are reusing the same data, ending on a single partition.
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  */
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  return a[10000-2] + b[10000-1] + c[10000-2] + d[10000-2];
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}
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/* { dg-final { scan-tree-dump-times "distributed: split to 3 loops" 0 "ldist" } } */
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/* { dg-final { cleanup-tree-dump "ldist" } } */

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