llvm dev - Jan 2013 - [LLVMdev] AVX2 in 3.2

The 3.2 release notes mention "Small codegen optimizations, especially
for AVX2."  Can someone provide a little more information about that?
What kinds of things were improved for AVX2?

Thanks!

                          -David

Hi David, 

There were many changes. For example, efficient lowering of vector casts (trunc,
zext, sext), simplified vblend patterns, shuffle patterns, AVX2 gathers, just to
name a few.

Nadav

On Jan 7, 2013, at 12:13 PM, dag at cray.com wrote:
> The 3.2 release notes mention "Small codegen optimizations, especially
> for AVX2."  Can someone provide a little more information about that?
> What kinds of things were improved for AVX2?
> 
> Thanks!
> 
>                          -David
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev

Nadav Rotem <nrotem at apple.com> writes:
> Hi David, 
>
> There were many changes. For example, efficient lowering of vector
> casts (trunc, zext, sext), simplified vblend patterns, shuffle
> patterns, AVX2 gathers, just to name a few.
Thanks Nadav, that's very helpful!

                          -David