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111
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1 /* { dg-do run } */
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2 /* { dg-options "-O2 -fdump-tree-strlen -fdump-tree-optimized" } */
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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, char *q)
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8 {
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9 size_t s = strlen (q);
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10 strcpy (p, q);
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11 return s - strlen (p);
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12 }
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13
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14 __attribute__((noinline, noclone)) size_t
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15 fn2 (char *p, char *q)
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16 {
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17 size_t s = strlen (q);
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18 memcpy (p, q, s + 1);
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19 return s - strlen (p);
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20 }
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21
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22 __attribute__((noinline, noclone)) size_t
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23 fn3 (char *p)
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24 {
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25 memcpy (p, "abcd", 5);
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26 return strlen (p);
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27 }
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28
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29 __attribute__((noinline, noclone)) size_t
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30 fn4 (char *p)
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31 {
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32 memcpy (p, "efg\0hij", 6);
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33 return strlen (p);
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34 }
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35
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36 int
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37 main ()
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38 {
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39 char buf[64];
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40 char *volatile p = buf;
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41 char *volatile q = "ABCDEF";
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42 buf[7] = 'G';
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43 if (fn1 (p, q) != 0 || memcmp (buf, "ABCDEF\0G", 8))
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44 abort ();
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45 q = "HIJ";
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46 if (fn2 (p + 1, q) != 0 || memcmp (buf, "AHIJ\0F\0G", 8))
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47 abort ();
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48 buf[6] = 'K';
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49 if (fn3 (p + 1) != 4 || memcmp (buf, "Aabcd\0KG", 8))
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50 abort ();
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51 if (fn4 (p) != 3 || memcmp (buf, "efg\0hiKG", 8))
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52 abort ();
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53 return 0;
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54 }
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55
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56 /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */
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57 /* { dg-final { scan-tree-dump-times "memcpy \\(" 4 "strlen" } } */
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58 /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */
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59 /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */
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60 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */
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61 /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen" } } */
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62 /* { dg-final { scan-tree-dump-times "return 0" 3 "optimized" } } */
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63 /* { dg-final { scan-tree-dump-times "return 4" 1 "optimized" } } */
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64 /* { dg-final { scan-tree-dump-times "return 3" 1 "optimized" } } */
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