Viewing file:  aligned-section-anchors-vect-70.c (1.08 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-require-effective-target section_anchors } */
/* { dg-require-effective-target vect_int } */
#define N 32
/* Increase alignment of struct if an array's offset is multiple of alignment of
vector type corresponding to it's scalar type.
For the below test-case:
offsetof(e) == 8 bytes.
i) For arm: let x = alignment of vector type corresponding to int,
x == 8 bytes.
Since offsetof(e) % x == 0, set DECL_ALIGN(a, b, c) to x.
ii) For aarch64, ppc: x == 16 bytes.
Since offsetof(e) % x != 0, don't increase alignment of a, b, c.
*/
static struct A {
int p1, p2;
int e[N];
} a, b, c;
int foo(void)
{
for (int i = 0; i < N; i++)
a.e[i] = b.e[i] + c.e[i];
return a.e[0];
}
/* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 0 "increase_alignment" { target aarch64*-*-* } } } */
/* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 0 "increase_alignment" { target powerpc64*-*-* } } } */
/* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 3 "increase_alignment" { target arm*-*-* } } } */
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