Start using MBB numbers directly instead of going through the live variables
map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14518 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 4fc08ec..cdcebfc 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -96,7 +96,7 @@
     unsigned miIndex = 0;
     for (MachineFunction::iterator mbb = mf_->begin(), mbbEnd = mf_->end();
          mbb != mbbEnd; ++mbb) {
-        unsigned mbbIdx = lv_->getMachineBasicBlockIndex(mbb);
+        unsigned mbbIdx = mbb->getNumber();
         bool inserted = mbbi2mbbMap_.insert(std::make_pair(mbbIdx,
                                                            mbb)).second;
         assert(inserted && "multiple index -> MachineBasicBlock");