[llvm-commits] [llvm] r155809 - in /llvm/trunk: lib/Transforms/Scalar/LoopStrengthReduce.cpp test/Transforms/LoopStrengthReduce/pr12691.ll

[Eli Friedman]

On Thu, May 3, 2012 at 11:41 AM, Eli Friedman <eli.friedman at gmail.com> wrote:
> On Thu, May 3, 2012 at 11:33 AM, Bill Wendling <isanbard at gmail.com> wrote:
>> Argh! I just kicked off rc2 testing last night. I suppose I can sneak this in. What is the risk of this patch and how often will this problem be hit?
>
> This only affects vector code which uses vector registers of multiple
> widths in the same function, where the backend doesn't have custom
> concatenation code.  I don't think the difference is visible on x86 or
> ARM (because we custom-lower the operation in question), but this
> likely impacts other architectures with multiple vector register
> widths.

Err, gah, replying to wrong thead, nvm/

-Eli