| /* { dg-require-effective-target vect_int } */ |
| |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include "tree-vect.h" |
| |
| #define N 16 |
| |
| struct extraction |
| { |
| int a[N][N]; |
| int b[N][N]; |
| }; |
| |
| static int a[N][N]; |
| static int b[N][N]; |
| static int c[N][N]; |
| |
| __attribute__ ((noinline)) |
| int main1 (int x) { |
| int i,j, off; |
| struct extraction *p; |
| p = (struct extraction *) malloc (sizeof (struct extraction)); |
| for (i = 0; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| a[i][j] = (i*7 + j*17)%53; |
| b[i][j] = (i*11+ j*13)%41; |
| asm volatile ("" ::: "memory"); |
| } |
| } |
| for (i = 0; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| c[i][j] = a[i][j]; |
| asm volatile ("" ::: "memory"); |
| } |
| } |
| for (i = 1; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| off = x + i + j + N+1; |
| if (x + i + j > N*N-1) |
| break; |
| if (off > N*N-1) |
| *(&c[0][0]+x+i+j) = *(&b[0][0] + off - N*N); |
| else |
| *(&c[0][0]+x+i+j) = *(&a[0][0] + off); |
| asm volatile ("" ::: "memory"); |
| } |
| } |
| |
| for (i = 0; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| p->a[i][j] = a[i][j]; |
| p->b[i][j] = b[i][j]; |
| asm volatile ("" ::: "memory"); |
| } |
| } |
| |
| /* Vectorizable: distance > number of iterations. */ |
| for (i = 1; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| *((int *)p + x + i + j) = *((int *)p + x + i + j + N+1); |
| } |
| } |
| |
| /* check results: */ |
| for (i = 0; i < N; i++) |
| { |
| for (j = 0; j < N; j++) |
| { |
| if (p->a[i][j] != c[i][j]) |
| abort (); |
| } |
| } |
| return 0; |
| } |
| |
| int main (void) |
| { |
| check_vect (); |
| |
| return main1 (N); |
| } |
| |
| /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */ |
| /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 2 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */ |
| /* { dg-final { scan-tree-dump-times "possible dependence between data-refs" 0 "vect" } } */ |
| |