From: Eli Friedman <eli.friedman@gmail.com>
Date: Wed, 15 Jun 2011 19:58:09 +0000 (+0000)
Subject: Remove unused code.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e97c7da59d65bbbd5e0d67b3ef9d742794437e2f;p=oota-llvm.git

Remove unused code.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133078 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Transforms/Utils/Cloning.h b/include/llvm/Transforms/Utils/Cloning.h
index 853de2dc031..674c2d002e8 100644
--- a/include/llvm/Transforms/Utils/Cloning.h
+++ b/include/llvm/Transforms/Utils/Cloning.h
@@ -107,12 +107,6 @@ BasicBlock *CloneBasicBlock(const BasicBlock *BB,
                             const Twine &NameSuffix = "", Function *F = 0,
                             ClonedCodeInfo *CodeInfo = 0);
 
-
-/// CloneLoop - Clone Loop. Clone dominator info for loop insiders. Populate
-/// VMap using old blocks to new blocks mapping.
-Loop *CloneLoop(Loop *L, LPPassManager *LPM, LoopInfo *LI, 
-                ValueToValueMapTy &VMap, Pass *P);
-
 /// CloneFunction - Return a copy of the specified function, but without
 /// embedding the function into another module.  Also, any references specified
 /// in the VMap are changed to refer to their mapped value instead of the
diff --git a/lib/Transforms/Utils/CloneLoop.cpp b/lib/Transforms/Utils/CloneLoop.cpp
deleted file mode 100644
index 87dd14153a1..00000000000
--- a/lib/Transforms/Utils/CloneLoop.cpp
+++ /dev/null
@@ -1,128 +0,0 @@
-//===- CloneLoop.cpp - Clone loop nest ------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the CloneLoop interface which makes a copy of a loop.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Utils/Cloning.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/Dominators.h"
-
-
-using namespace llvm;
-
-/// CloneDominatorInfo - Clone a basic block's dominator tree. It is expected
-/// that the basic block is already cloned.
-static void CloneDominatorInfo(BasicBlock *BB, 
-                               ValueToValueMapTy &VMap,
-                               DominatorTree *DT) {
-
-  assert (DT && "DominatorTree is not available");
-  ValueToValueMapTy::iterator BI = VMap.find(BB);
-  assert (BI != VMap.end() && "BasicBlock clone is missing");
-  BasicBlock *NewBB = cast<BasicBlock>(BI->second);
-
-  // NewBB already got dominator info.
-  if (DT->getNode(NewBB))
-    return;
-
-  assert (DT->getNode(BB) && "BasicBlock does not have dominator info");
-  // Entry block is not expected here. Infinite loops are not to cloned.
-  assert (DT->getNode(BB)->getIDom() && "BasicBlock does not have immediate dominator");
-  BasicBlock *BBDom = DT->getNode(BB)->getIDom()->getBlock();
-
-  // NewBB's dominator is either BB's dominator or BB's dominator's clone.
-  BasicBlock *NewBBDom = BBDom;
-  ValueToValueMapTy::iterator BBDomI = VMap.find(BBDom);
-  if (BBDomI != VMap.end()) {
-    NewBBDom = cast<BasicBlock>(BBDomI->second);
-    if (!DT->getNode(NewBBDom))
-      CloneDominatorInfo(BBDom, VMap, DT);
-  }
-  DT->addNewBlock(NewBB, NewBBDom);
-}
-
-/// CloneLoop - Clone Loop. Clone dominator info. Populate VMap
-/// using old blocks to new blocks mapping.
-Loop *llvm::CloneLoop(Loop *OrigL, LPPassManager  *LPM, LoopInfo *LI,
-                      ValueToValueMapTy &VMap, Pass *P) {
-  
-  DominatorTree *DT = NULL;
-  if (P)
-    DT = P->getAnalysisIfAvailable<DominatorTree>();
-
-  SmallVector<BasicBlock *, 16> NewBlocks;
-
-  // Populate loop nest.
-  SmallVector<Loop *, 8> LoopNest;
-  LoopNest.push_back(OrigL);
-
-
-  Loop *NewParentLoop = NULL;
-  do {
-    Loop *L = LoopNest.pop_back_val();
-    Loop *NewLoop = new Loop();
-
-    if (!NewParentLoop)
-      NewParentLoop = NewLoop;
-
-    LPM->insertLoop(NewLoop, L->getParentLoop());
-
-    // Clone Basic Blocks.
-    for (Loop::block_iterator I = L->block_begin(), E = L->block_end();
-         I != E; ++I) {
-      BasicBlock *BB = *I;
-      BasicBlock *NewBB = CloneBasicBlock(BB, VMap, ".clone");
-      VMap[BB] = NewBB;
-      if (P)
-        LPM->cloneBasicBlockSimpleAnalysis(BB, NewBB, L);
-      NewLoop->addBasicBlockToLoop(NewBB, LI->getBase());
-      NewBlocks.push_back(NewBB);
-    }
-
-    // Clone dominator info.
-    if (DT)
-      for (Loop::block_iterator I = L->block_begin(), E = L->block_end();
-           I != E; ++I) {
-        BasicBlock *BB = *I;
-        CloneDominatorInfo(BB, VMap, DT);
-      }
-
-    // Process sub loops
-    for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I)
-      LoopNest.push_back(*I);
-  } while (!LoopNest.empty());
-
-  // Remap instructions to reference operands from VMap.
-  for(SmallVector<BasicBlock *, 16>::iterator NBItr = NewBlocks.begin(), 
-        NBE = NewBlocks.end();  NBItr != NBE; ++NBItr) {
-    BasicBlock *NB = *NBItr;
-    for(BasicBlock::iterator BI = NB->begin(), BE = NB->end(); 
-        BI != BE; ++BI) {
-      Instruction *Insn = BI;
-      for (unsigned index = 0, num_ops = Insn->getNumOperands(); 
-           index != num_ops; ++index) {
-        Value *Op = Insn->getOperand(index);
-        ValueToValueMapTy::iterator OpItr = VMap.find(Op);
-        if (OpItr != VMap.end())
-          Insn->setOperand(index, OpItr->second);
-      }
-    }
-  }
-
-  BasicBlock *Latch = OrigL->getLoopLatch();
-  Function *F = Latch->getParent();
-  F->getBasicBlockList().insert(OrigL->getHeader(), 
-                                NewBlocks.begin(), NewBlocks.end());
-
-
-  return NewParentLoop;
-}