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/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-fre1" } */
struct A { float x, y; };
struct B { struct A u; };
void bar (struct A *);
float
f1 (struct B *x, int y)
{
struct A p;
p.x = 1.0f;
p.y = 2.0f;
struct A *q = &x[y].u;
*q = p;
float f = x[y].u.x + x[y].u.y;
bar (&p);
return f;
}
float
f2 (struct B *x, int y)
{
struct A p;
p.x = 1.0f;
p.y = 2.0f;
x[y].u = p;
float f = x[y].u.x + x[y].u.y;
bar (&p);
return f;
}
float
f3 (struct B *x, int y)
{
struct A p;
p.x = 1.0f;
p.y = 2.0f;
struct A *q = &x[y].u;
__builtin_memcpy (&q->x, &p.x, sizeof (float));
__builtin_memcpy (&q->y, &p.y, sizeof (float));
float f = x[y].u.x + x[y].u.y;
bar (&p);
return f;
}
float
f4 (struct B *x, int y)
{
struct A p;
p.x = 1.0f;
p.y = 2.0f;
__builtin_memcpy (&x[y].u.x, &p.x, sizeof (float));
__builtin_memcpy (&x[y].u.y, &p.y, sizeof (float));
float f = x[y].u.x + x[y].u.y;
bar (&p);
return f;
}
/* { dg-final { scan-tree-dump-times "return 3.0" 4 "fre1" } } */
/* { dg-final { cleanup-tree-dump "fre1" } } */
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