First chunk of MachineInstr bundle support.

1. Added opcode BUNDLE
2. Taught MachineInstr class to deal with bundled MIs
3. Changed MachineBasicBlock iterator to skip over bundled MIs; added an iterator to walk all the MIs
4. Taught MachineBasicBlock methods about bundled MIs

llvm-svn: 145975

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index b74142dc807..ddbeaeb7cb7 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -346,7 +346,8 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
                   TII.get(TargetOpcode::DBG_VALUE))
           .addReg(CopyUseMI->getOperand(0).getReg(), RegState::Debug)
           .addImm(Offset).addMetadata(Variable);
-        EntryMBB->insertAfter(CopyUseMI, NewMI);
+        MachineBasicBlock::iterator Pos = CopyUseMI;
+        EntryMBB->insertAfter(Pos, NewMI);
       }
     }
   }