add moveBefore/moveAfter helper methods
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31145 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index ebd492c..fcc0129 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -120,6 +120,18 @@
}
}
+void MachineBasicBlock::moveBefore(MachineBasicBlock *NewAfter) {
+ MachineFunction::BasicBlockListType &BBList =getParent()->getBasicBlockList();
+ getParent()->getBasicBlockList().splice(NewAfter, BBList, this);
+}
+
+void MachineBasicBlock::moveAfter(MachineBasicBlock *NewBefore) {
+ MachineFunction::BasicBlockListType &BBList =getParent()->getBasicBlockList();
+ MachineFunction::iterator BBI = NewBefore;
+ getParent()->getBasicBlockList().splice(++BBI, BBList, this);
+}
+
+
void MachineBasicBlock::addSuccessor(MachineBasicBlock *succ) {
Successors.push_back(succ);
succ->addPredecessor(this);