From 4f2c29708d3208197f706f6e8841a2f828aea89c Mon Sep 17 00:00:00 2001
From: Manman Ren <manman.ren@gmail.com>
Date: Tue, 23 Jul 2013 23:07:38 +0000
Subject: [PATCH] Debug Info: clean up.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187002 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/IR/DebugInfo.cpp | 24 ++++++------------------
 1 file changed, 6 insertions(+), 18 deletions(-)

diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index 1168ef3c94f..0fbfd2da86c 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -661,9 +661,7 @@ MDNode *DISubprogram::getVariablesNodes() const {
 }
 
 DIArray DISubprogram::getVariables() const {
-  if (MDNode *T = getNodeField(DbgNode, 18))
-    return DIArray(T);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 18));
 }
 
 Value *DITemplateValueParameter::getValue() const {
@@ -686,27 +684,21 @@ DIArray DICompileUnit::getEnumTypes() const {
   if (!DbgNode || DbgNode->getNumOperands() < 13)
     return DIArray();
 
-  if (MDNode *N = getNodeField(DbgNode, 7))
-    return DIArray(N);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 7));
 }
 
 DIArray DICompileUnit::getRetainedTypes() const {
   if (!DbgNode || DbgNode->getNumOperands() < 13)
     return DIArray();
 
-  if (MDNode *N = getNodeField(DbgNode, 8))
-    return DIArray(N);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 8));
 }
 
 DIArray DICompileUnit::getSubprograms() const {
   if (!DbgNode || DbgNode->getNumOperands() < 13)
     return DIArray();
 
-  if (MDNode *N = getNodeField(DbgNode, 9))
-    return DIArray(N);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 9));
 }
 
 
@@ -714,18 +706,14 @@ DIArray DICompileUnit::getGlobalVariables() const {
   if (!DbgNode || DbgNode->getNumOperands() < 13)
     return DIArray();
 
-  if (MDNode *N = getNodeField(DbgNode, 10))
-    return DIArray(N);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 10));
 }
 
 DIArray DICompileUnit::getImportedEntities() const {
   if (!DbgNode || DbgNode->getNumOperands() < 13)
     return DIArray();
 
-  if (MDNode *N = getNodeField(DbgNode, 11))
-    return DIArray(N);
-  return DIArray();
+  return DIArray(getNodeField(DbgNode, 11));
 }
 
 /// fixupSubprogramName - Replace contains special characters used