Update comments now that LLVM PR3861 has been fixed. However, since conditionally removing the workaround makes the ABI dependent on LLVM version, I reconsidered that. (The same revision of LDC compiling for the same target should probably produce code that follows the same ABI, right?)

module aa1;

void main()
{
    int[int] aai;
    assert(aai is null);
    aai[0] = 52;
    assert(aai !is null);
    int i = aai[0];
    assert(i == 52);
    aai[32] = 123;
    int j = aai[32];
    assert(i == 52);
    assert(j == 123);
}