[Pipeliner] Fix the Schedule DAG topoligical order.
This patch updates the DAG change to reflect in the topological ordering
of the nodes.
Differential Revision: https://reviews.llvm.org/D53105
llvm-svn: 344282
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 3d8510f..1109be1 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -1295,6 +1295,7 @@
// Add a dependence between the new instruction and the instruction
// that defines the new base.
SDep Dep(&I, SDep::Anti, NewBase);
+ Topo.AddPred(LastSU, &I);
LastSU->addPred(Dep);
// Remember the base and offset information so that we can update the