[PATCH] CodeGen: implement __emit and __yield intrinsics

[Tim Northover]

Hi Reid,

On 24 April 2014 19:41, Saleem Abdulrasool <abdulras at fb.com> wrote:
> This adds the __emit and __yield ARM intrinsics.  This is mostly for MSVC
> compatibility, although the ARM toolchain also supports this intrinsics.

__yield has the blessing of the ACLE, so it should be reasonably
simple to get added. But it should be done via an LLVM intrinsic
rather than inlineasm: @llvm.arm.hint probably (you may need to create
it).

__emit is a terrible idea. I'm steering well clear of any patch involving it.

> If emitting code in ARM mode, the instruction is 32-bits wide, and 16-bits wide in thumb mode.

This appears to be false.

Cheers.

Tim.