print the machine CFG in the -print-machineinstrs dump

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20976 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 6774dde9ab..695ba13a49 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -100,6 +100,14 @@ void MachineBasicBlock::print(std::ostream &OS) const {
     OS << "\t";
     I->print(OS, &getParent()->getTarget());
   }
+
+  // Print the successors of this block according to the CFG.
+  if (!succ_empty()) {
+    OS << "    Successors according to CFG:";
+    for (const_succ_iterator SI = succ_begin(), E = succ_end(); SI != E; ++SI)
+      OS << " " << *SI;
+    OS << "\n";
+  }
 }
 
 void MachineBasicBlock::addSuccessor(MachineBasicBlock *succ) {