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/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp
index 8ba93a429c2..3866fc08691 100644
--- a/llvm/lib/CodeGen/RegisterCoalescer.cpp
+++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp
@@ -710,7 +710,8 @@ bool RegisterCoalescer::RemoveCopyByCommutingDef(const CoalescerPair &CP,
     return false;
   if (NewMI != DefMI) {
     LIS->ReplaceMachineInstrInMaps(DefMI, NewMI);
-    MBB->insert(DefMI, NewMI);
+    MachineBasicBlock::iterator Pos = DefMI;
+    MBB->insert(Pos, NewMI);
     MBB->erase(DefMI);
   }
   unsigned OpIdx = NewMI->findRegisterUseOperandIdx(IntA.reg, false);