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 foreach10;

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

void main() {
    char* last = null;
    printf("The addresses should increment:\n");
    foreach (ref c; "bar") {
        auto a = {
            printf("%x '%c'\n", c, c);
            return &c;
        };
        auto nw = a();
        printf("ptr = %p\n", nw);
        if (last != null)
            assert(nw == last+1);
        last = nw;
    }
}