Add SkipPHIsAndLabels from PHIElimination to MachineBasicBlock. It is needed
elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117763 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 834c9ed..d4f901d 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -147,6 +147,13 @@
   return I;
 }
 
+MachineBasicBlock::iterator
+MachineBasicBlock::SkipPHIsAndLabels(MachineBasicBlock::iterator I) {
+  while (I != end() && (I->isPHI() || I->isLabel() || I->isDebugValue()))
+    ++I;
+  return I;
+}
+
 MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
   iterator I = end();
   while (I != begin() && (--I)->getDesc().isTerminator())