...T[] getBuf(T)() @safe
{
    T[100] ret;
    auto r = ret[];
    return r;
}

void main() @safe...

...4,,7
L12:
	fstp	%st(1)
L10:
	rep ret
L7:
	fldl	LC0
	ret

Bye,
bearophile

...4(%ebp), %esp
	popl	%esi
	popl	%ebp
	ret
LBB0_5:
	movl	$11, 4(%esp)
	movl...

...something
  append ~= item;
  MyType[] ret;
  if (append.data.length < 10_000)
  {
    ret = append.data).dup...

...offset)
             ret ~= format(" internal padding\n");
           offset += off-offset;
        }

        foreach(i; 0 .. size)
           ret ~= format...

...runtime;
 bool ret=Runtime.initialize();//will segfault below with or without that
 assert(ret);//ok...

...ptr __memset32
        add ESP,018h
        pop EAX
        ret


ldc2 is smarter and removes the calls...

...ret = new Foo();
    ret.data = data;
    assert(ret.data.length < 1_000_000); // OK!
    ret...

...eax,eax
   20:	c9                   	leave
   21:	c3                   	ret
   22:	66 0f 1f 44 00 00...

...EAX
        leave
        ret

_D4temp16__T8doubleItTxiZ8doubleItFNaNbNiNfxiZxi:
        enter   4,0
        add EAX,EAX
        leave
        ret

Bye,
bearophile