EXTRACT_SUBREG coalescing support. The coalescer now treats EXTRACT_SUBREG like

[oota-llvm.git] / lib / CodeGen / SelectionDAG / ScheduleDAG.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
index b616b7e4825818d503cddaf74a3b5cf34b88a246..bb5379c34917ff64fc008c7368b492eb3c1ca8fa 100644 (file)
--- a/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
@@ -567,9 +567,6 @@ void ScheduleDAG::EmitSubregNode(SDNode *Node,
     // TODO: If the node is a use of a CopyFromReg from a physical register
     // fold the extract into the copy now
 
-    // TODO: Add tracking info to SSARegMap of which vregs are subregs
-    // to allow coalescing in the allocator
-    
     // Create the extract_subreg machine instruction.
     MachineInstr *MI =
       new MachineInstr(BB, TII->get(TargetInstrInfo::EXTRACT_SUBREG));