[llvm-commits] [llvm] r132984 - /llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

[Dan Gohman]

On Jun 14, 2011, at 12:18 AM, Nadav Rotem wrote:

> Author: nadav
> Date: Tue Jun 14 02:18:26 2011
> New Revision: 132984
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=132984&view=rev
> Log:
> Disable trunc-store simplification on vectors.

Hi Nadav,

What's the reasoning behind this? Is this just because it's a
pessimization on certain targets, or is there a more fundamental
reason? Can you add some comments explaining this?

Thanks,

Dan