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comparison gcc/testsuite/gcc.dg/pr79715.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* PR tree-optimization/79715 - hand-rolled strdup with unused result
2 not eliminated
3 { dg-do compile }
4 { dg-options "-O2 -Wall -fdump-tree-optimized" } */
5
6 void f (const char *s)
7 {
8 unsigned n = __builtin_strlen (s) + 1;
9 char *p = __builtin_malloc (n);
10 __builtin_memcpy (p, s, n);
11 __builtin_free (p);
12 }
13
14 void g (const char *s)
15 {
16 unsigned n = __builtin_strlen (s) + 1;
17 char *p = __builtin_malloc (n);
18 __builtin_strcpy (p, s);
19 __builtin_free (p);
20 }
21
22 /* { dg-final { scan-tree-dump-not "free" "optimized" } }
23 { dg-final { scan-tree-dump-not "malloc" "optimized" } }
24 { dg-final { scan-tree-dump-not "memcpy" "optimized" } }
25 { dg-final { scan-tree-dump-not "strcpy" "optimized" } }
26 { dg-final { scan-tree-dump-not "strlen" "optimized" } } */