Undo previous check-in.

[oota-llvm.git] / lib / Transforms / Utils / DbgInfoRemover.cpp

diff --git a/lib/Transforms/Utils/DbgInfoRemover.cpp b/lib/Transforms/Utils/DbgInfoRemover.cpp
index 484354d7317b6a578ea597ab4335f6dfd05002f3..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644 (file)
--- a/lib/Transforms/Utils/DbgInfoRemover.cpp
+++ b/lib/Transforms/Utils/DbgInfoRemover.cpp
@@ -1,97 +0,0 @@
-//===- DbgInforemover.cpp - Remove Debug Info Intrinsics ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This is utility pass removes all debug information intrinsics from a 
-// function.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Module.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/Pass.h"
-#include "llvm/ADT/SmallPtrSet.h"
-using namespace llvm;
-
-namespace {
-  // Remove dbg intrinsics and related globals from this module.
-  struct RemoveDbgInfoPass : public ModulePass {
-    static char ID; // Pass identification, replacement for typeid
-    RemoveDbgInfoPass() : ModulePass(&ID) {}
-    
-    void getAnalysisUsage(AnalysisUsage &Info) const {
-      Info.setPreservesCFG();
-    }
-
-    bool runOnModule(Module &M) {
-      bool Changed = false;
-      DbgGlobals.clear();
-
-      for (Module::iterator I = M.begin(), E = M.end(); I != E; ) {
-        Function *F = I++;
-        Changed |= cleanupFunction(*F);
-        if (F->hasName() && !strncmp(F->getNameStart(), "llvm.dbg", 8))
-          M.getFunctionList().erase(F);
-      }
-
-      for (Module::global_iterator GVI = M.global_begin(), E = M.global_end();
-           GVI != E; ) {
-        GlobalVariable *GV = GVI++;
-        if (GV->hasName() && !strncmp(GV->getNameStart(), "llvm.dbg", 8)) {
-          if (GV->hasInitializer())
-            CollectDbgGlobals(GV->getInitializer());
-          GV->replaceAllUsesWith(UndefValue::get(GV->getType()));
-          GV->removeDeadConstantUsers();
-          M.getGlobalList().erase(GV);
-        }
-      }
-
-      for (SmallPtrSet<GlobalVariable *,8>::iterator CI = DbgGlobals.begin(),
-             CE = DbgGlobals.end(); CI != CE; ) {
-        GlobalVariable *GV = *CI++;
-        GV->removeDeadConstantUsers();
-        if (GV->use_empty())
-          M.getGlobalList().erase(GV);
-      }
-      return Changed;
-    }
-
-    void CollectDbgGlobals(Constant *C) {
-      if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C))
-        DbgGlobals.insert(GV);
-      for (User::op_iterator I = C->op_begin(), E = C->op_end(); I != E; ++I) 
-        CollectDbgGlobals(cast<Constant>(*I));
-    }
-
-    bool cleanupFunction(Function &F) {
-      SmallVector<Instruction *, 8> WorkList;
-      for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
-        for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
-          if (isa<DbgInfoIntrinsic>(I))
-            WorkList.push_back(I);
-
-      for (SmallVector<Instruction *, 8>::iterator WI = WorkList.begin(),
-             WE = WorkList.end(); WI != WE; ++WI)
-        (*WI)->eraseFromParent();
-     
-      return !WorkList.empty();
-    }
-    
-  private:
-    SmallPtrSet<GlobalVariable *, 8> DbgGlobals;
-  };
-  
-  char RemoveDbgInfoPass::ID = 0;
-  static RegisterPass<RemoveDbgInfoPass> X("remove-dbginfo",
-                                           "Remove Debugging Information");
-}
-
-ModulePass *llvm::createRemoveDbgInfoPass() {
-  return new RemoveDbgInfoPass();
-}