| /* { dg-require-effective-target vect_int } */ |
| |
| #include <stdarg.h> |
| #include "tree-vect.h" |
| |
| #define N 16 |
| |
| int main1 () |
| { |
| union { |
| char a[N] __attribute__ ((__aligned__(16))); |
| char b[N] __attribute__ ((__aligned__(16))); |
| } s; |
| int i; |
| |
| /* Initialization. */ |
| for (i = 0; i < N; i++) |
| { |
| s.b[i] = 3*i; |
| } |
| |
| /* Can't vectorize - dependence analysis fails cause s.a and s.b may |
| overlap. */ |
| for (i = 0; i < N; i++) |
| { |
| s.a[i] = s.b[i] + 1; |
| } |
| |
| /* check results: */ |
| for (i = 0; i < N; i++) |
| { |
| if (s.a[i] != 3*i + 1) |
| abort (); |
| } |
| |
| return 0; |
| } |
| |
| int main (void) |
| { |
| check_vect (); |
| |
| return main1 (); |
| } |
| |
| |
| /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail *-*-* } } } */ |
| /* { dg-final { scan-tree-dump-times "can't determine dependence between" 1 "vect" } } */ |
| /* { dg-final { cleanup-tree-dump "vect" } } */ |
