[PATCH] D14737: Convert some ObjC msgSends to runtime calls

[John McCall via cfe-commits]

rjmccall added a comment.

In http://reviews.llvm.org/D14737#291481, @stephanemoore wrote:

> I hope that it's not presumptuous of me to inquire but I was wondering if the intent of this patch is to optimize calls to RR methods (and alloc) in non-ARC code? Would I be correct in assuming that clang will already emit direct calls to relevant RR runtime functions when ARC is enabled?


Correct.  The patch turns ObjC message sends of -retain, -release, and +alloc into calls to the runtime functions we already use in ARC.

This is largely irrelevant in ARC because it's illegal to write an ObjC message send of -retain or -release.  The change to +alloc would still apply, however.


http://reviews.llvm.org/D14737