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111
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1 /* { dg-do compile } */
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2 /* { dg-require-effective-target section_anchors } */
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3 /* { dg-require-effective-target vect_int } */
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4
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5 #define N 32
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6
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7 /* Increase alignment of struct if an array's offset is multiple of alignment of
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8 vector type corresponding to it's scalar type.
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9 For the below test-case:
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10 offsetof(e) == 8 bytes.
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11 i) For arm: let x = alignment of vector type corresponding to int,
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12 x == 8 bytes.
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13 Since offsetof(e) % x == 0, set DECL_ALIGN(a, b, c) to x.
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14 ii) For aarch64, ppc: x == 16 bytes.
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15 Since offsetof(e) % x != 0, don't increase alignment of a, b, c.
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16 */
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17
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18 static struct A {
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19 int p1, p2;
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20 int e[N];
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21 } a, b, c;
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22
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23 int foo(void)
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24 {
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25 for (int i = 0; i < N; i++)
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26 a.e[i] = b.e[i] + c.e[i];
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27
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28 return a.e[0];
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29 }
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30
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31 /* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 0 "increase_alignment" { target aarch64*-*-* } } } */
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32 /* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 0 "increase_alignment" { target powerpc64*-*-* } } } */
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33 /* { dg-final { scan-ipa-dump-times "Increasing alignment of decl" 3 "increase_alignment" { target arm*-*-* } } } */
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