[llvm-commits] [llvm] r44874 - /llvm/trunk/lib/CodeGen/MachineLICM.cpp

[Chris Lattner]

On Dec 12, 2007, at 1:38 AM, Evan Cheng wrote:

>
>
> On Dec 11, 2007, at 11:40 AM, Bill Wendling <isanbard at gmail.com>  
> wrote:
>
>> Author: void
>> Date: Tue Dec 11 13:40:06 2007
>> New Revision: 44874
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=44874&view=rev
>> Log:
>> Blark! How in the world did this work without this?!
>
> One thing that is some what annoying to me is if LICM is after live
> variables then it won't need to compute vreg def info or liveness
> info. I wonder if it is possible to move the pass after live  
> variables?

What would this give?  liveness for vregs is trivial in ssa form, no?

-Chris