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111
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1 /* A test for induction variable merging. */
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2
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3 /* { dg-do compile } */
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4 /* { dg-options "-O1 -fdump-tree-optimized" } */
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5
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6 void foo(long);
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7
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8 void xxx(void)
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9 {
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10 long iter, jter;
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11
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12 for (iter = 0, jter = 2; iter < 100; iter++, jter++)
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13 {
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14 foo (iter);
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15 foo (jter);
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16 }
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17 }
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18
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19 /* Only iter variable should remain. */
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20
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21 /* { dg-final { scan-tree-dump-times "int jiter" 0 "optimized" } } */
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22
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23 /* And jter shouldn't be an induction variable anymore (no PHI node). */
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24 /* { dg-final { scan-tree-dump-times "jter_\[0-9\]* = PHI" 0 "optimized" } } */
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25
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26 /* And the use of jter should be replaced by iter + 2 */
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27
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28 /* { dg-final { scan-tree-dump-times " \\+ 2" 1 "optimized" } } */
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29
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