[PATCH] D31042: Allow DataLayout to specify addrspace for allocas.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In https://reviews.llvm.org/D31042#711661, @rjmccall wrote:

> In https://reviews.llvm.org/D31042#711648, @arsenm wrote:
>
> > LLVM treats 0 as the "generic" address space. This is how the LangRef refers to it.
>
>
> You're revising LangRef here one way or the other.  I'm suggesting that a better revision would be to stop saying that address space 0 is the "generic" address space (because there is no such thing), and instead say that it is the address space of the stack.  Is there anything actually preventing you from doing that?


Yes. The pointer size of the stack smaller than the pointer size for code or most other memory. 0 is a valid, dereferencable pointer for the stack address space


https://reviews.llvm.org/D31042