Mercurial > hg > CbC > CbC_gcc

comparison gcc/testsuite/gcc.dg/tree-ssa/pr83141.c @ 131:84e7813d76e9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents
children
comparison
equal deleted inserted replaced
111:04ced10e8804 131:84e7813d76e9
1 /* { dg-do run } */
2 /* { dg-options "-O -fdump-tree-esra-details" } */
3
4 volatile short vs;
5 volatile long vl;
6
7 struct A { short s; long i; long j; };
8 struct A a, b;
9 void foo ()
10 {
11 struct A c;
12 __builtin_memcpy (&c, &b, sizeof (struct A));
13 __builtin_memcpy (&a, &c, sizeof (struct A));
14
15 vs = c.s;
16 vl = c.i;
17 vl = c.j;
18 }
19
20
21 int main()
22 {
23 if ((sizeof (short) != 2)
24 || (__builtin_offsetof (struct A, i) < 4))
25 return 0;
26
27 __builtin_memset (&b, 0, sizeof (struct A));
28 b.s = 1;
29 __builtin_memcpy ((char *)&b+2, &b, 2);
30 foo ();
31 __builtin_memcpy (&a, (char *)&a+2, 2);
32 if (a.s != 1)
33 __builtin_abort ();
34 return 0;
35 }
36
37 /* { dg-final { scan-tree-dump-not "Will attempt to totally scalarize" "esra" } } */