AMDGPU/SI: Use common topological sort algorithm in SIScheduleDAGMI

Reviewers: arsenm, axeldavy

Subscribers: MatzeB, arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D19823

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272346 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed