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111
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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -fdump-tree-strlen" } */
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3
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4 #include "strlenopt.h"
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5
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6 __attribute__((noinline, noclone)) size_t
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7 fn1 (char *p, const char *r)
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8 {
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9 size_t len1 = strlen (r);
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10 char *q = strchr (p, '\0');
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11 *q = '\0';
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12 return len1 - strlen (r); // This strlen should be optimized into len1.
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13 }
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14
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15 int
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16 main (void)
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17 {
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18 char p[] = "foobar";
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19 const char *volatile q = "xyzzy";
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20 fn1 (p, q);
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21 return 0;
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22 }
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23
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24 /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */
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25 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */
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