[PATCH] D14755: Handle ARMv6-J as an alias, instead of fake architecture

[Jonathan Roelofs via llvm-commits]

jroelofs added a comment.

GCC seems to think `arm1136j-s` and `arm1136jz-s` are real things. FWIW, it treats `arm1136j-s` as v6J + no VFP2, `arm1136jf-s` as v6J + VFP2, `arm1136jz-s` as v6zk + no VFP2, and `arm1136jz-s` as v6zk + VFP2.  That being said, it's possible GCC was wrong for adding them in the first place.  I have no idea how many people rely on this behavior in gcc, or in clang.

Perhaps it's best to "break" this with an error message that says: "x is not supported, did you mean y?"... that way users whose build systems are dependent on this mcpu at least get an explanation on what they have to fix, rather than  them complaining that something just doesn't work anymore.


http://reviews.llvm.org/D14755