Make "`aa[key]`" use the same runtime call as "`key in aa`". The runtime calls these were using were different, but with equivalent definitions. With `ldc -O3`, the following functions now all compile to the exact same code: {{{ int[int] y; void foo(int x) { if (x in y) { auto z = x in y; sink(*z); } } void bar(int x) { if (x in y) { sink(y[x]); } } void baz(int x) { if (auto p = x in y) { sink(*p); } } }}}

module tangotests.templ1;

import Util = tango.text.Util;

extern(C) int printf(char*, ...);

void main()
{
    foreach (line; Util.lines("a\nb\nc"))
    {
        printf("%.*s\n", line.length, line.ptr);
    }
}