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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
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Rev 384 |
/* A test for # of iterations analysis (signed counter cannot wrap) and final
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/* A test for # of iterations analysis (signed counter cannot wrap) and final
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value replacement. */
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value replacement. */
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/* { dg-options "-O2 -fdump-tree-optimized" } */
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/* { dg-options "-O2 -fdump-tree-optimized" } */
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int foo(void);
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int foo(void);
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int bla(void)
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int bla(void)
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{
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{
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int i, n = foo (), j;
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int i, n = foo (), j;
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j = 0;
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j = 0;
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/* The loop should be removed completely. */
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/* The loop should be removed completely. */
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for (i = 1; i <= n; i++)
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for (i = 1; i <= n; i++)
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j += n;
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j += n;
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/* Should be replaced with return n * n; */
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/* Should be replaced with return n * n; */
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return j;
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return j;
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}
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}
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/* Since the loop is removed, there should be no addition. */
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/* Since the loop is removed, there should be no addition. */
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/* { dg-final { scan-tree-dump-times "\\+" 0 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "\\+" 0 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "n_. \\* n_." 1 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "n_. \\* n_." 1 "optimized" } } */
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/* The if from the loop header copying remains in the code. */
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/* The if from the loop header copying remains in the code. */
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/* { dg-final { scan-tree-dump-times "if " 1 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "if " 1 "optimized" } } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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