Use MachineBasicBlock::transferSuccessors.

llvm-svn: 52594

1 files changed, 3 insertions, 8 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index beb03d0e598..000cfc3f2cd 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -4018,15 +4018,10 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
   MachineFunction *F = BB->getParent();
   F->getBasicBlockList().insert(It, copy0MBB);
   F->getBasicBlockList().insert(It, sinkMBB);
-  // Update machine-CFG edges by first adding all successors of the current
+  // Update machine-CFG edges by transferring all successors of the current
   // block to the new block which will contain the Phi node for the select.
-  for(MachineBasicBlock::succ_iterator i = BB->succ_begin(), 
-      e = BB->succ_end(); i != e; ++i)
-    sinkMBB->addSuccessor(*i);
-  // Next, remove all successors of the current block, and add the true
-  // and fallthrough blocks as its successors.
-  while(!BB->succ_empty())
-    BB->removeSuccessor(BB->succ_begin());
+  sinkMBB->transferSuccessors(BB);
+  // Next, add the true and fallthrough blocks as its successors.
   BB->addSuccessor(copy0MBB);
   BB->addSuccessor(sinkMBB);