[llvm-commits] [llvm] r93202 - /llvm/trunk/lib/Transforms/InstCombine/InstCombineCasts.cpp

[Dan Gohman]

On Jan 11, 2010, at 2:49 PM, Chris Lattner wrote:

> Author: lattner
> Date: Mon Jan 11 16:49:40 2010
> New Revision: 93202
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=93202&view=rev
> Log:
> reenable the piece that turns trunc(zext(x)) -> x even if zext has multiple uses,
> codegen has no apparent problem with the trunc version of this, because it turns
> into a simple subreg idiom

On targets where TargetLowering::isTruncateFree returns true,
at least.

Dan