[LLVMdev] Add support for ldr pseudo instruction in ARM integrated assembler

[Chris Lattner]

On Oct 26, 2013, at 5:45 PM, JF Bastien <jfb at google.com> wrote:

>>> Do the ARM usages include allowing a single pseudo-instruction to expand
>>> to multiple real instructions? For example, a movw/movt pair? If so, I’m
>>> *very* opposed to that part.
>> 
>> 
>> Why?  For people writing assembly manually, having pseudo instructions to
>> encapsulate common patterns is very useful.
> 
> Would it be acceptable for this pseudo-instruction to expand to
> movw/movt for some targets, and ldr for others? AFAIK the former
> performs better on some ARM implementations which the OP may have an
> interest in.

I'm not an arm32 expert, so I'll defer to other wiser people :-)

-Chris