From 1552e50011cd267afa25d17e87268130f7422bed Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Thu, 22 Jan 2015 21:43:01 +0000
Subject: [PATCH] Remove dead leak detector parts that fell out of use in
 r224703.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226867 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/IR/LLVMContextImpl.cpp |   3 +-
 lib/IR/LLVMContextImpl.h   |   4 --
 lib/IR/LeaksContext.h      | 103 -------------------------------------
 3 files changed, 1 insertion(+), 109 deletions(-)
 delete mode 100644 lib/IR/LeaksContext.h

diff --git a/lib/IR/LLVMContextImpl.cpp b/lib/IR/LLVMContextImpl.cpp
index 880e1c1bcad..3370bdb0f88 100644
--- a/lib/IR/LLVMContextImpl.cpp
+++ b/lib/IR/LLVMContextImpl.cpp
@@ -97,8 +97,7 @@ LLVMContextImpl::~LLVMContextImpl() {
     delete I;
 #include "llvm/IR/Metadata.def"
 
-  // Free the constants.  This is important to do here to ensure that they are
-  // freed before the LeakDetector is torn down.
+  // Free the constants.
   std::for_each(ExprConstants.map_begin(), ExprConstants.map_end(),
                 DropFirst());
   std::for_each(ArrayConstants.map_begin(), ArrayConstants.map_end(),
diff --git a/lib/IR/LLVMContextImpl.h b/lib/IR/LLVMContextImpl.h
index 3b3be0f9982..4d3fa4462a3 100644
--- a/lib/IR/LLVMContextImpl.h
+++ b/lib/IR/LLVMContextImpl.h
@@ -17,7 +17,6 @@
 
 #include "AttributeImpl.h"
 #include "ConstantsContext.h"
-#include "LeaksContext.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/ArrayRef.h"
@@ -392,9 +391,6 @@ public:
 
   ConstantInt *TheTrueVal;
   ConstantInt *TheFalseVal;
-  
-  LeakDetectorImpl<Value> LLVMObjects;
-  LeakDetectorImpl<Metadata> LLVMMDObjects;
 
   // Basic type instances.
   Type VoidTy, LabelTy, HalfTy, FloatTy, DoubleTy, MetadataTy;
diff --git a/lib/IR/LeaksContext.h b/lib/IR/LeaksContext.h
deleted file mode 100644
index 47704fa1a76..00000000000
--- a/lib/IR/LeaksContext.h
+++ /dev/null
@@ -1,103 +0,0 @@
-//===- LeaksContext.h - LeadDetector Implementation ------------*- C++ -*--===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file defines various helper methods and classes used by
-// LLVMContextImpl for leaks detectors.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_IR_LEAKSCONTEXT_H
-#define LLVM_LIB_IR_LEAKSCONTEXT_H
-
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Value.h"
-#include "llvm/Support/raw_ostream.h"
-
-namespace llvm {
-
-template <class T>
-struct PrinterTrait {
-  static void print(const T* P) { errs() << P; }
-};
-
-template<>
-struct PrinterTrait<Value> {
-  static void print(const Value* P) { errs() << *P; }
-};
-
-template <> struct PrinterTrait<Metadata> {
-  static void print(const Metadata *P) { P->print(errs()); }
-};
-
-template <typename T>
-struct LeakDetectorImpl {
-  explicit LeakDetectorImpl(const char* const name = "") : 
-    Cache(nullptr), Name(name) { }
-
-  void clear() {
-    Cache = nullptr;
-    Ts.clear();
-  }
-    
-  void setName(const char* n) { 
-    Name = n;
-  }
-    
-  // Because the most common usage pattern, by far, is to add a
-  // garbage object, then remove it immediately, we optimize this
-  // case.  When an object is added, it is not added to the set
-  // immediately, it is added to the CachedValue Value.  If it is
-  // immediately removed, no set search need be performed.
-  void addGarbage(const T* o) {
-    assert(Ts.count(o) == 0 && "Object already in set!");
-    if (Cache) {
-      assert(Cache != o && "Object already in set!");
-      Ts.insert(Cache);
-    }
-    Cache = o;
-  }
-
-  void removeGarbage(const T* o) {
-    if (o == Cache)
-      Cache = nullptr; // Cache hit
-    else
-      Ts.erase(o);
-  }
-
-  bool hasGarbage(const std::string& Message) {
-    addGarbage(nullptr); // Flush the Cache
-
-    assert(!Cache && "No value should be cached anymore!");
-
-    if (!Ts.empty()) {
-      errs() << "Leaked " << Name << " objects found: " << Message << ":\n";
-      for (typename SmallPtrSet<const T*, 8>::iterator I = Ts.begin(),
-           E = Ts.end(); I != E; ++I) {
-        errs() << '\t';
-        PrinterTrait<T>::print(*I);
-        errs() << '\n';
-      }
-      errs() << '\n';
-
-      return true;
-    }
-    
-    return false;
-  }
-
-private:
-  SmallPtrSet<const T*, 8> Ts;
-  const T* Cache;
-  const char* Name;
-};
-
-}
-
-#endif