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comparison 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
comparison
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68:561a7518be6b 111:04ced10e8804
1 /* { dg-do run } */
2 /* { dg-options "-O2 -fdump-tree-strlen" } */
3
4 #include "strlenopt.h"
5
6 __attribute__((noinline, noclone)) char *
7 fn1 (int x, int y, int z)
8 {
9 static char buf[40];
10 const char *p;
11 switch (x)
12 {
13 case 0:
14 p = "abcd";
15 /* Prevent cswitch optimization. */
16 asm volatile ("" : : : "memory");
17 break;
18 case 1:
19 p = "efgh";
20 break;
21 case 2:
22 p = "ijkl";
23 break;
24 default:
25 p = "mnop";
26 break;
27 }
28 if (y)
29 {
30 strcpy (buf, p);
31 if (z)
32 strcat (buf, "ABCDEFG");
33 else
34 strcat (buf, "HIJKLMN");
35 }
36 else
37 {
38 strcpy (buf, p + 1);
39 if (z)
40 strcat (buf, "OPQ");
41 else
42 strcat (buf, "RST");
43 }
44 return buf;
45 }
46
47 int
48 main ()
49 {
50 int i;
51 for (i = 0; i < 5; i++)
52 {
53 const char *p = "abcdefghijklmnop" + (i < 3 ? i : 3) * 4;
54 const char *q;
55 fn1 (i ? 0 : 1, 1, 1);
56 q = fn1 (i, 0, 0);
57 if (memcmp (q, p + 1, 3) != 0 || memcmp (q + 3, "RST", 4) != 0)
58 abort ();
59 fn1 (i ? 0 : 1, 0, 1);
60 q = fn1 (i, 1, 0);
61 if (memcmp (q, p, 4) != 0 || memcmp (q + 4, "HIJKLMN", 8) != 0)
62 abort ();
63 fn1 (i ? 0 : 1, 1, 0);
64 q = fn1 (i, 0, 1);
65 if (memcmp (q, p + 1, 3) != 0 || memcmp (q + 3, "OPQ", 4) != 0)
66 abort ();
67 fn1 (i ? 0 : 1, 0, 0);
68 q = fn1 (i, 1, 1);
69 if (memcmp (q, p, 4) != 0 || memcmp (q + 4, "ABCDEFG", 8) != 0)
70 abort ();
71 }
72 return 0;
73 }
74
75 /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen" } } */
76 /* { dg-final { scan-tree-dump-times "memcpy \\(" 6 "strlen" } } */
77 /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */
78 /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */
79 /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */
80 /* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen" } } */