From 8d8c981a1f20a5454a4abeffa64942aa0e94d0c5 Mon Sep 17 00:00:00 2001
From: "Duncan P. N. Exon Smith" <dexonsmith@apple.com>
Date: Fri, 10 Apr 2015 23:53:44 +0000
Subject: [PATCH] DebugInfo: Remove dead DIDescriptor::getDescriptorField()

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234665 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/IR/DebugInfo.h | 11 -----------
 lib/IR/DebugInfo.cpp        | 19 -------------------
 2 files changed, 30 deletions(-)

diff --git a/include/llvm/IR/DebugInfo.h b/include/llvm/IR/DebugInfo.h
index 88e81f372fe..7703ad1cfe9 100644
--- a/include/llvm/IR/DebugInfo.h
+++ b/include/llvm/IR/DebugInfo.h
@@ -63,10 +63,6 @@ typedef DenseMap<const MDString *, MDNode *> DITypeIdentifierMap;
 /// This should not be stored in a container, because the underlying MDNode may
 /// change in certain situations.
 class DIDescriptor {
-  // Befriends DIRef so DIRef can befriend the protected member
-  // function: getFieldAs<DIRef>.
-  template <typename T> friend class DIRef;
-
 public:
   /// \brief Duplicated debug info flags.
   ///
@@ -80,11 +76,6 @@ public:
 protected:
   const MDNode *DbgNode;
 
-  DIDescriptor getDescriptorField(unsigned Elt) const;
-  template <typename DescTy> DescTy getFieldAs(unsigned Elt) const {
-    return DescTy(getDescriptorField(Elt));
-  }
-
 public:
   explicit DIDescriptor(const MDNode *N = nullptr) : DbgNode(N) {}
   DIDescriptor(const DebugNode *N) : DbgNode(N) {}
@@ -245,8 +236,6 @@ public:
 ///
 /// Abstracts over direct and identifier-based metadata references.
 template <typename T> class DIRef {
-  template <typename DescTy>
-  friend DescTy DIDescriptor::getFieldAs(unsigned Elt) const;
   friend DIScopeRef DIScope::getContext() const;
   friend DIScopeRef DIScope::getRef() const;
   friend class DIType;
diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index 56db33a63d2..70a67225685 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -33,25 +33,6 @@
 using namespace llvm;
 using namespace llvm::dwarf;
 
-//===----------------------------------------------------------------------===//
-// DIDescriptor
-//===----------------------------------------------------------------------===//
-
-static Metadata *getField(const MDNode *DbgNode, unsigned Elt) {
-  if (!DbgNode || Elt >= DbgNode->getNumOperands())
-    return nullptr;
-  return DbgNode->getOperand(Elt);
-}
-
-static MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) {
-  return dyn_cast_or_null<MDNode>(getField(DbgNode, Elt));
-}
-
-DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
-  MDNode *Field = getNodeField(DbgNode, Elt);
-  return DIDescriptor(Field);
-}
-
 /// \brief Return the size reported by the variable's type.
 unsigned DIVariable::getSizeInBits(const DITypeIdentifierMap &Map) {
   DIType Ty = getType().resolve(Map);