[PATCH] D26196: Add support for non-zero null pointer for C and OpenCL

[John McCall via cfe-commits]

rjmccall added a comment.

In https://reviews.llvm.org/D26196#592823, @yaxunl wrote:

> Hi John,
>
> It seems the casting from a pointer to different address space is not affected by this change. When a null pointer is casted to different address space, it is casted the same way as an ordinary pointer, e.g. by addrspacecast.


You mean, the code-generation for that knows about your special null pointer representation?  That is confusing.


https://reviews.llvm.org/D26196