[PATCH, 3.3 docs] Add PowerPC release notes

[Bill Wendling]

Sure. Please commit directly to the 3.3 branch.

-bw

On Jun 6, 2013, at 6:20 AM, Bill Schmidt <wschmidt at linux.vnet.ibm.com> wrote:

> Release notes for PowerPC changes in LLVM 3.3.  Is this ok for
> RELEASE_33/rc3?
> 
> Thanks,
> Bill
> 
> 
> Index: rc3/docs/ReleaseNotes.rst
> ===================================================================
> --- rc3/docs/ReleaseNotes.rst	(revision 183398)
> +++ rc3/docs/ReleaseNotes.rst	(working copy)
> @@ -103,6 +103,30 @@ Hexagon Target
>   architectures which are no longer in use. Currently supported
>   architectures are hexagonv4 and hexagonv5.
> 
> +PowerPC Target
> +--------------
> +
> +New features and improvements:
> +
> +- PowerPC now supports an assembly parser.
> +- Support added for thread-local storage.  64-bit ELF subtarget only.
> +- Support added for medium and large code model (-mcmodel=medium,large).
> +  Medium code model is now the default.  64-bit ELF subtarget only.
> +- Improved register allocation (fewer reserved registers).
> +- 64-bit atomic load and store are now supported.
> +- Improved code generation for unaligned memory accesses of scalar types.
> +- Improved performance of floating-point divide and square root
> +  with -ffast-math.
> +- Support for predicated returns.
> +- Improved code generation for comparisons.
> +- Support added for inline setjmp and longjmp.
> +- Support added for many instructions introduced in PowerISA 2.04, 2.05,
> +  and 2.06.
> +- Improved spill code for vector registers.
> +- Support added for -mno-altivec.
> +- ABI compatibility fixes for complex parameters, 128-bit integer parameters,
> +  and varargs functions.  64-bit ELF subtarget only.
> +  
> Loop Vectorizer
> ---------------
> 
> 
>