22 lines
597 B
C
22 lines
597 B
C
/* { dg-do compile } */
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/* { dg-options "-O1 -fdump-tree-optimized" } */
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int f(int x)
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{
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return ((~x) != 0);
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}
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int f1(int x)
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{
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return ((~x) == 0);
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}
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/* There should be no != 0 which is produced by the front-end as
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~x != 0 is the same as x != -1 (or ~0). Likewise for ==. */
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/* { dg-final { scan-tree-dump-times "!= 0" 0 "optimized"} } */
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/* { dg-final { scan-tree-dump-times "!= -1" 1 "optimized"} } */
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/* { dg-final { scan-tree-dump-times "== 0" 0 "optimized"} } */
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/* { dg-final { scan-tree-dump-times "== -1" 1 "optimized"} } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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