Change uses of Function::front to Function::getEntryBlock for readability.

llvm-svn: 35265
diff --git a/llvm/lib/Transforms/Utils/CloneFunction.cpp b/llvm/lib/Transforms/Utils/CloneFunction.cpp
index d80a831..cff58ab 100644
--- a/llvm/lib/Transforms/Utils/CloneFunction.cpp
+++ b/llvm/lib/Transforms/Utils/CloneFunction.cpp
@@ -59,7 +59,7 @@
     CodeInfo->ContainsUnwinds        |= isa<UnwindInst>(BB->getTerminator());
     CodeInfo->ContainsDynamicAllocas |= hasDynamicAllocas;
     CodeInfo->ContainsDynamicAllocas |= hasStaticAllocas && 
-                                        BB != &BB->getParent()->front();
+                                        BB != &BB->getParent()->getEntryBlock();
   }
   return NewBB;
 }