Add support to dump dot graph block layout after MBP

Differential Revision: https://reviews.llvm.org/D29141

llvm-svn: 293408
diff --git a/llvm/lib/CodeGen/BranchFolding.cpp b/llvm/lib/CodeGen/BranchFolding.cpp
index a898e32..1bdfa2d 100644
--- a/llvm/lib/CodeGen/BranchFolding.cpp
+++ b/llvm/lib/CodeGen/BranchFolding.cpp
@@ -498,6 +498,8 @@
   return MBFI.printBlockFreq(OS, Freq);
 }
 
+void BranchFolder::MBFIWrapper::view(bool isSimple) { MBFI.view(isSimple); }
+
 /// CountTerminators - Count the number of terminators in the given
 /// block and set I to the position of the first non-terminator, if there
 /// is one, or MBB->end() otherwise.