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annotate gcc/testsuite/gcc.dg/no-strict-overflow-8.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-fno-strict-overflow -O2 -fdump-tree-optimized" } */
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3
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4 /* We cannot fold i > 0 because p->a - p->b can be larger than INT_MAX
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5 and thus i can wrap. Dual of Wstrict-overflow-18.c */
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6
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7 struct c { unsigned int a; unsigned int b; };
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8 extern void bar (struct c *);
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9 int
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10 foo (struct c *p)
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11 {
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12 int i;
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13 int sum = 0;
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14
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15 for (i = 0; i < p->a - p->b; ++i)
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16 {
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17 if (i > 0)
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18 sum += 2;
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19 bar (p);
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20 }
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21 return sum;
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22 }
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23
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24 /* { dg-final { scan-tree-dump "i_.* > 0" "optimized" } } */