[LLVMdev] LLVM ARM backend enhancements

[Chris Lattner]

I'm happy to announce that Apple is contributing some major  
extensions to the LLVM ARM backend.  The improvements include support  
for ARM v4/v6, vfp support, soft float, pre/postinc support, load/ 
store multiple generation, constant pool entry motion (to support  
large functions), and support for the darwin/arm ABI.  In addition to  
ARM support, the backend now includes code generation support for the  
Thumb instruction set, which is effectively a completely new and  
different code generator.

Evan is the main author of these extensions, but Jim and I  
contributed a few pieces here and there.  We're currently working  
with Rafael and Lauro to integrate our changes with theirs, and hope  
to commit the code in the next couple of days.  We're looking forward  
to future collaboration with other LLVM ARM developers to continue  
improving the code generator.

-Chris