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 mini.arrays20;

int[] foo()
{
    return [2,4,6];
}

int[] bar()
{
    return [1,3,5];
}

void main()
{
    auto a = foo();
    auto b = bar();
    assert(b[0] == 1);
    assert(a[0] == 2);
    assert(b[1] == 3);
    assert(a[1] == 4);
    assert(b[2] == 5);
    assert(a[2] == 6);
}