[PATCH] D27042: lld: Default image base address to 0x400000

[Rafael Espíndola via llvm-commits]

> I agree wholeheartedly RE: cargo cult.  I didn't mean to imply that we
> should just blindly copy every decision that was made for ld/gold.  I do
> think it worthwhile to understand where we diverge and why, though.
>
> My original question was: why 2MB?  I am just curious how we arrived at
> that number (for my own education).

Ed covered the "why at least 2MB and aligned at 2MB". The why not 4MB
is mainly so that we have a chance of finding out why it might be
significant. If we just did what bfd did we would never know if it was
important or incidental. With 2MB we are covering the know uses. If
the need for 4MB never comes up we will know it was incidental (or at
least historical).

Cheers,
Rafael