From d6351e76d53bfb9d6be9487a394b8a5b75a28e42 Mon Sep 17 00:00:00 2001
From: Ahmed Bougacha <ahmed.bougacha@gmail.com>
Date: Wed, 21 Aug 2013 07:27:50 +0000
Subject: MC CFG: Don't insert preds/succs again.

llvm-svn: 188874
---
 llvm/lib/MC/MCFunction.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/MC/MCFunction.cpp')

diff --git a/llvm/lib/MC/MCFunction.cpp b/llvm/lib/MC/MCFunction.cpp
index 2665d3e167b..473d07bf994 100644
--- a/llvm/lib/MC/MCFunction.cpp
+++ b/llvm/lib/MC/MCFunction.cpp
@@ -37,7 +37,8 @@ MCBasicBlock::MCBasicBlock(const MCTextAtom &Insts, MCFunction *Parent)
 {}
 
 void MCBasicBlock::addSuccessor(const MCBasicBlock *MCBB) {
-  Successors.push_back(MCBB);
+  if (!isSuccessor(MCBB))
+    Successors.push_back(MCBB);
 }
 
 bool MCBasicBlock::isSuccessor(const MCBasicBlock *MCBB) const {
@@ -46,7 +47,8 @@ bool MCBasicBlock::isSuccessor(const MCBasicBlock *MCBB) const {
 }
 
 void MCBasicBlock::addPredecessor(const MCBasicBlock *MCBB) {
-  Predecessors.push_back(MCBB);
+  if (!isPredecessor(MCBB))
+    Predecessors.push_back(MCBB);
 }
 
 bool MCBasicBlock::isPredecessor(const MCBasicBlock *MCBB) const {
-- 
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