| /* { dg-require-effective-target mmap } */ |
| |
| #include <sys/mman.h> |
| #include <stdio.h> |
| |
| #define COUNT 128 |
| #define MMAP_SIZE 0x20000 |
| #define ADDRESS 0x1122000000 |
| #define TYPE unsigned int |
| |
| #ifndef MAP_ANONYMOUS |
| #define MAP_ANONYMOUS MAP_ANON |
| #endif |
| |
| void __attribute__((noipa)) |
| loop (TYPE *restrict x, TYPE *restrict y) |
| { |
| for (int i = 0; i < COUNT; ++i) |
| { |
| x[i * 4] = y[i * 2] + 1; |
| x[i * 4 + 1] = y[i * 2] + 2; |
| x[i * 4 + 2] = y[i * 2 + 1] + 3; |
| x[i * 4 + 3] = y[i * 2 + 1] + 4; |
| } |
| } |
| |
| TYPE x[COUNT * 4]; |
| |
| int |
| main (void) |
| { |
| void *y; |
| TYPE *end_y; |
| |
| y = mmap ((void *) ADDRESS, MMAP_SIZE, PROT_READ | PROT_WRITE, |
| MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| if (y == MAP_FAILED) |
| { |
| perror ("mmap"); |
| return 1; |
| } |
| |
| end_y = (TYPE *) ((char *) y + MMAP_SIZE); |
| |
| loop (x, end_y - COUNT * 2); |
| |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump "Data access with gaps requires scalar epilogue loop" "vect" { target { vect_perm && vect_int } } } } */ |