48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/* { dg-do run } */
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/* { dg-require-effective-target store_merge } */
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/* { dg-options "-O2 -fno-tree-vectorize -fdump-tree-store-merging" } */
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struct S { unsigned char b[2]; unsigned short c; unsigned char d[4]; unsigned long e; };
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__attribute__((noipa)) void
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foo (struct S *p)
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{
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p->b[1] = 1;
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p->c = 23;
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p->d[0] = 4;
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p->d[1] = 5;
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p->d[2] = 6;
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p->d[3] = 7;
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p->e = 8;
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}
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__attribute__((noipa)) void
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bar (struct S *p)
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{
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p->b[1] = 9;
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p->c = 112;
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p->d[0] = 10;
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p->d[1] = 11;
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}
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struct S s = { { 30, 31 }, 32, { 33, 34, 35, 36 }, 37 };
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int
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main ()
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{
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asm volatile ("" : : : "memory");
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foo (&s);
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asm volatile ("" : : : "memory");
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if (s.b[0] != 30 || s.b[1] != 1 || s.c != 23 || s.d[0] != 4 || s.d[1] != 5
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|| s.d[2] != 6 || s.d[3] != 7 || s.e != 8)
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__builtin_abort ();
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bar (&s);
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asm volatile ("" : : : "memory");
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if (s.b[0] != 30 || s.b[1] != 9 || s.c != 112 || s.d[0] != 10 || s.d[1] != 11
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|| s.d[2] != 6 || s.d[3] != 7 || s.e != 8)
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__builtin_abort ();
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return 0;
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}
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/* { dg-final { scan-tree-dump-times "Merging successful" 2 "store-merging" } } */
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