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comparison gcc/testsuite/gcc.dg/strlenopt-28.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 1830386684a0
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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 volatile int v;
7
8 size_t
9 f1 (void)
10 {
11 char a[30];
12 v += 1;
13 memcpy (a, "1234567", 8);
14 memcpy (a + 7, "89abcdefg", 10);
15 memcpy (a + 16, "h", 2);
16 return strlen (a); // This strlen should be optimized into 17.
17 }
18
19 size_t
20 f2 (void)
21 {
22 char a[30];
23 v += 2;
24 strcpy (a, "1234567");
25 strcpy (a + 7, "89abcdefg");
26 strcpy (a + 16, "h");
27 return strlen (a); // This strlen should be optimized into 17.
28 }
29
30 size_t
31 f3 (char *a)
32 {
33 v += 3;
34 memcpy (a, "1234567", 8);
35 memcpy (a + 7, "89abcdefg", 10);
36 memcpy (a + 16, "h", 2);
37 return strlen (a); // This strlen should be optimized into 17.
38 }
39
40 size_t
41 f4 (char *a)
42 {
43 v += 4;
44 strcpy (a, "1234567");
45 strcpy (a + 7, "89abcdefg");
46 strcpy (a + 16, "h");
47 return strlen (a); // This strlen should be optimized into 17.
48 }
49
50 int
51 main ()
52 {
53 char a[30];
54 if (f1 () != 17 || f2 () != 17 || f3 (a) != 17 || f4 (a) != 17)
55 abort ();
56 return 0;
57 }
58
59 /* { dg-final { scan-tree-dump-times "strlen \\(" 0 "strlen" } } */