1 /* { dg-require-effective-target vect_int } */
2 
3 #include "tree-vect.h"
4 
5 #define N 50
6 
7 #ifndef SIGNEDNESS_1
8 #define SIGNEDNESS_1 unsigned
9 #define SIGNEDNESS_2 unsigned
10 #define SIGNEDNESS_3 unsigned
11 #endif
12 
13 SIGNEDNESS_1 int __attribute__ ((noipa))
f(SIGNEDNESS_1 int res,SIGNEDNESS_3 char * restrict a,SIGNEDNESS_3 char * restrict b)14 f (SIGNEDNESS_1 int res, SIGNEDNESS_3 char *restrict a,
15    SIGNEDNESS_3 char *restrict b)
16 {
17   for (__INTPTR_TYPE__ i = 0; i < N; ++i)
18     {
19       int av = a[i];
20       int bv = b[i];
21       SIGNEDNESS_2 short mult = av * bv;
22       res += mult;
23     }
24   return res;
25 }
26 
27 #define BASE ((SIGNEDNESS_3 int) -1 < 0 ? -126 : 4)
28 #define OFFSET 20
29 
30 int
main(void)31 main (void)
32 {
33   check_vect ();
34 
35   SIGNEDNESS_3 char a[N], b[N];
36   int expected = 0x12345;
37   for (int i = 0; i < N; ++i)
38     {
39       a[i] = BASE + i * 5;
40       b[i] = BASE + OFFSET + i * 4;
41       asm volatile ("" ::: "memory");
42       expected += (SIGNEDNESS_2 short) (a[i] * b[i]);
43     }
44   if (f (0x12345, a, b) != expected)
45     __builtin_abort ();
46 }
47 
48 /* { dg-final { scan-tree-dump "vect_recog_dot_prod_pattern: detected" "vect" } } */
49 /* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" { target vect_sdot_qi } } } */
50