/* PR tree-optimization/88709 */ /* { dg-do run { target int32 } } */ /* { dg-require-effective-target store_merge } */ /* { dg-options "-O2 -fdump-tree-store-merging-details" } */ /* { dg-final { scan-tree-dump "New sequence of 3 stores to replace old one of 6 stores" "store-merging" { target { le && { ! arm*-*-* } } } } } */ /* { dg-final { scan-tree-dump "New sequence of \[34] stores to replace old one of 6 stores" "store-merging" { target { be && { ! arm*-*-* } } } } } */ struct T { char a[1024]; }; __attribute__((noipa)) void bar (struct T *t) { int x = 0x506; if (__builtin_memcmp (&t->a[97], &x, sizeof (x))) __builtin_abort (); __builtin_memset (&t->a[97], '\0', sizeof (x)); for (int i = 0; i < 8; ++i) if (t->a[i] != ((i == 54) + 2 * (i == 52) + 3 * (i == 95) + 4 * (i == 96))) __builtin_abort (); } int main () { struct T t = {}; t.a[54] = 1; t.a[52] = 2; t.a[95] = 3; t.a[96] = 4; int x = 0x506; __builtin_memcpy (&t.a[97], &x, sizeof (x)); bar (&t); }