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annotate gcc/testsuite/gcc.dg/strlenopt-19.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 1830386684a0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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)) char *
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7 fn1 (int x, int y, int z)
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8 {
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9 static char buf[40];
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10 const char *p;
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11 switch (x)
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12 {
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13 case 0:
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14 p = "abcd";
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15 /* Prevent cswitch optimization. */
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16 asm volatile ("" : : : "memory");
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17 break;
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18 case 1:
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19 p = "efgh";
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20 break;
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21 case 2:
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22 p = "ijkl";
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23 break;
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24 default:
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25 p = "mnop";
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26 break;
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27 }
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28 if (y)
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29 {
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30 strcpy (buf, p);
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31 if (z)
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32 strcat (buf, "ABCDEFG");
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33 else
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34 strcat (buf, "HIJKLMN");
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35 }
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36 else
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37 {
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38 strcpy (buf, p + 1);
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39 if (z)
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40 strcat (buf, "OPQ");
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41 else
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42 strcat (buf, "RST");
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43 }
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44 return buf;
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45 }
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46
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47 int
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48 main ()
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49 {
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50 int i;
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51 for (i = 0; i < 5; i++)
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52 {
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53 const char *p = "abcdefghijklmnop" + (i < 3 ? i : 3) * 4;
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54 const char *q;
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55 fn1 (i ? 0 : 1, 1, 1);
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56 q = fn1 (i, 0, 0);
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57 if (memcmp (q, p + 1, 3) != 0 || memcmp (q + 3, "RST", 4) != 0)
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58 abort ();
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59 fn1 (i ? 0 : 1, 0, 1);
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60 q = fn1 (i, 1, 0);
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61 if (memcmp (q, p, 4) != 0 || memcmp (q + 4, "HIJKLMN", 8) != 0)
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62 abort ();
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63 fn1 (i ? 0 : 1, 1, 0);
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64 q = fn1 (i, 0, 1);
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65 if (memcmp (q, p + 1, 3) != 0 || memcmp (q + 3, "OPQ", 4) != 0)
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66 abort ();
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67 fn1 (i ? 0 : 1, 0, 0);
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68 q = fn1 (i, 1, 1);
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69 if (memcmp (q, p, 4) != 0 || memcmp (q + 4, "ABCDEFG", 8) != 0)
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70 abort ();
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71 }
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72 return 0;
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73 }
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74
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75 /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen" } } */
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76 /* { dg-final { scan-tree-dump-times "memcpy \\(" 6 "strlen" } } */
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77 /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */
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78 /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */
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79 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */
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80 /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen" } } */