| /* { dg-additional-options "-O3" } */ |
| /* { dg-require-effective-target vect_int } */ |
| |
| #include "tree-vect.h" |
| |
| #define N 80 |
| |
| void __attribute__ ((noipa)) |
| f (signed char *restrict a, signed char *restrict b, |
| signed char *restrict c, int n, int step) |
| { |
| for (int j = 0; j < n; ++j) |
| { |
| for (int i = 0; i < 16; ++i) |
| a[i] = (b[i] + c[i]) >> 1; |
| a += step; |
| b += step; |
| c += step; |
| } |
| } |
| |
| #define BASE1 -126 |
| #define BASE2 -42 |
| |
| signed char a[N], b[N], c[N]; |
| |
| int |
| main (void) |
| { |
| check_vect (); |
| |
| for (int i = 0; i < N; ++i) |
| { |
| a[i] = i; |
| b[i] = BASE1 + i * 3; |
| c[i] = BASE2 + i * 2; |
| asm volatile ("" ::: "memory"); |
| } |
| f (a, b, c, N / 20, 20); |
| for (int i = 0; i < N; ++i) |
| { |
| int d = (BASE1 + BASE2 + i * 5) >> 1; |
| if (a[i] != (i % 20 < 16 ? d : i)) |
| __builtin_abort (); |
| } |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump "vect_recog_average_pattern: detected" "vect" } } */ |
| /* { dg-final { scan-tree-dump {\.AVG_FLOOR} "vect" { target vect_avg_qi } } } */ |
| /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" { target vect_avg_qi } } } */ |
| /* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" { target vect_avg_qi } } } */ |