[PATCH] D20092: [AMDGPU] Fix issues introduced by aggressive block placement

[Chuang-Yu Cheng via llvm-commits]

cycheng abandoned this revision.
cycheng added a comment.

Because http://reviews.llvm.org/D20017 has been abandoned, so abandon this patch, too.
We might need this patch again if "-force-precise-rotation-cost" turn on by default, and do loop rotation on this pattern:

            entry               
              |                 
  ------> loop.header (body)    
  |97%    /       \             
  |      /50%      \50%         
  --- latch <--- if.then        
         |
         |3%
     loop.end

Thanks for all reviewers!


http://reviews.llvm.org/D20092