From f9666f9b3a3d26810deae8cd54feb6e47ecee61a Mon Sep 17 00:00:00 2001
From: Roman Divacky <rdivacky@FreeBSD.org>
Date: Fri, 23 Oct 2009 15:58:05 +0000
Subject: [PATCH] This was removed upstream.

---
 lib/Transforms/IPO/IndMemRemoval.cpp | 90 ----------------------------
 1 file changed, 90 deletions(-)
 delete mode 100644 lib/Transforms/IPO/IndMemRemoval.cpp

diff --git a/lib/Transforms/IPO/IndMemRemoval.cpp b/lib/Transforms/IPO/IndMemRemoval.cpp
deleted file mode 100644
index e7884ec634b..00000000000
--- a/lib/Transforms/IPO/IndMemRemoval.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-//===-- IndMemRemoval.cpp - Remove indirect allocations and frees ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass finds places where memory allocation functions may escape into
-// indirect land.  Some transforms are much easier (aka possible) only if free 
-// or malloc are not called indirectly.
-// Thus find places where the address of memory functions are taken and 
-// construct bounce functions with direct calls of those functions.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "indmemrem"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Pass.h"
-#include "llvm/Module.h"
-#include "llvm/Instructions.h"
-#include "llvm/Type.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Support/Compiler.h"
-using namespace llvm;
-
-STATISTIC(NumBounceSites, "Number of sites modified");
-STATISTIC(NumBounce     , "Number of bounce functions created");
-
-namespace {
-  class VISIBILITY_HIDDEN IndMemRemPass : public ModulePass {
-  public:
-    static char ID; // Pass identification, replacement for typeid
-    IndMemRemPass() : ModulePass(&ID) {}
-
-    virtual bool runOnModule(Module &M);
-  };
-} // end anonymous namespace
-
-char IndMemRemPass::ID = 0;
-static RegisterPass<IndMemRemPass>
-X("indmemrem","Indirect Malloc and Free Removal");
-
-bool IndMemRemPass::runOnModule(Module &M) {
-  // In theory, all direct calls of malloc and free should be promoted
-  // to intrinsics.  Therefore, this goes through and finds where the
-  // address of free or malloc are taken and replaces those with bounce
-  // functions, ensuring that all malloc and free that might happen
-  // happen through intrinsics.
-  bool changed = false;
-  if (Function* F = M.getFunction("free")) {
-    if (F->isDeclaration() && F->arg_size() == 1 && !F->use_empty()) {
-      Function* FN = Function::Create(F->getFunctionType(),
-                                      GlobalValue::LinkOnceAnyLinkage,
-                                      "free_llvm_bounce", &M);
-      BasicBlock* bb = BasicBlock::Create(M.getContext(), "entry",FN);
-      Instruction* R = ReturnInst::Create(M.getContext(), bb);
-      new FreeInst(FN->arg_begin(), R);
-      ++NumBounce;
-      NumBounceSites += F->getNumUses();
-      F->replaceAllUsesWith(FN);
-      changed = true;
-    }
-  }
-  if (Function* F = M.getFunction("malloc")) {
-    if (F->isDeclaration() && F->arg_size() == 1 && !F->use_empty()) {
-      Function* FN = Function::Create(F->getFunctionType(), 
-                                      GlobalValue::LinkOnceAnyLinkage,
-                                      "malloc_llvm_bounce", &M);
-      FN->setDoesNotAlias(0);
-      BasicBlock* bb = BasicBlock::Create(M.getContext(), "entry",FN);
-      Instruction* c = CastInst::CreateIntegerCast(
-          FN->arg_begin(), Type::getInt32Ty(M.getContext()), false, "c", bb);
-      Instruction* a = new MallocInst(Type::getInt8Ty(M.getContext()),
-                                      c, "m", bb);
-      ReturnInst::Create(M.getContext(), a, bb);
-      ++NumBounce;
-      NumBounceSites += F->getNumUses();
-      F->replaceAllUsesWith(FN);
-      changed = true;
-    }
-  }
-  return changed;
-}
-
-ModulePass *llvm::createIndMemRemPass() {
-  return new IndMemRemPass();
-}
-- 
2.45.0