There is only one register coalescer. Merge it into the base class and
remove the analysis group.

llvm-svn: 133899
diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp
index 7961be3..bcb38d7 100644
--- a/llvm/lib/CodeGen/RegAllocBasic.cpp
+++ b/llvm/lib/CodeGen/RegAllocBasic.cpp
@@ -141,7 +141,7 @@
   initializeLiveIntervalsPass(*PassRegistry::getPassRegistry());
   initializeSlotIndexesPass(*PassRegistry::getPassRegistry());
   initializeStrongPHIEliminationPass(*PassRegistry::getPassRegistry());
-  initializeRegisterCoalescerAnalysisGroup(*PassRegistry::getPassRegistry());
+  initializeRegisterCoalescerPass(*PassRegistry::getPassRegistry());
   initializeCalculateSpillWeightsPass(*PassRegistry::getPassRegistry());
   initializeLiveStacksPass(*PassRegistry::getPassRegistry());
   initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry());