1 /* { dg-require-effective-target vect_float } */
2 /* { dg-additional-options "--param vect-max-peeling-for-alignment=0" } */
3
4 #include "tree-vect.h"
5
6 #define N 256
7
8 __attribute__ ((noinline))
bar(float * pa,float * pb,float * pc)9 void bar (float *pa, float *pb, float *pc)
10 {
11 int i;
12
13 /* check results: */
14 for (i = 0; i < N; i++)
15 {
16 if (pa[i] != (pb[i] * pc[i]))
17 abort ();
18 }
19
20 return;
21 }
22
23 /* Unaligned pointer accesses, with unknown alignment.
24 The loop bound is known and divisible by the vectorization factor.
25 No aliasing problems.
26 vect-50.c is similar to this one with one difference:
27 the loop bound is unknown.
28 vect-45.c is similar to this one with one difference:
29 can't prove that pointers don't alias. */
30
31 __attribute__ ((noinline)) int
main1(float * __restrict__ pa,float * __restrict__ pb,float * __restrict__ pc)32 main1 (float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
33 {
34 int i;
35
36 for (i = 0; i < N; i++)
37 {
38 pa[i] = pb[i] * pc[i];
39 }
40
41 bar (pa,pb,pc);
42
43 return 0;
44 }
45
main(void)46 int main (void)
47 {
48 int i;
49 float a[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
50 float b[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69};
51 float c[N+4] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23};
52
53 check_vect ();
54
55 main1 (a,b,c);
56 main1 (&a[1],b,c);
57 main1 (a,&b[1],c);
58 main1 (&a[1],&b[1],&c[1]);
59
60 return 0;
61 }
62
63 /* For targets that don't support misaligned loads we version for the
64 all three accesses (peeling to align the store will not force the
65 two loads to be aligned). */
66
67 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
68 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 3 "vect" { xfail { ! vect_unaligned_possible } } } } */
69 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" { xfail { { vect_no_align && { ! vect_hw_misalign } } || {! vector_alignment_reachable} } } } } */
70 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 3 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
71 /* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" { target { {! vector_alignment_reachable} && {{! vect_no_align} && {! vect_hw_misalign} } } } } } */
72