Take out the debug info probe stuff. It's making some changes to

the PassManager annoying and should be reimplemented as a decorator
on top of existing passes (as should the timing data).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153305 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 3 insertions, 335 deletions

diff --git a/include/llvm/DebugInfoProbe.h b/include/llvm/DebugInfoProbe.h
deleted file mode 100644
index 78d00dfeed..0000000000
--- a/include/llvm/DebugInfoProbe.h
+++ /dev/null
@@ -1,67 +0,0 @@
-//===-- DebugInfoProbe.h - DebugInfo Probe ----------------------*- 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 a probe, DebugInfoProbe, that can be used by pass
-// manager to analyze how optimizer is treating debugging information.
-// 
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_TRANSFORMS_UTILS_DEBUGINFOPROBE_H
-#define LLVM_TRANSFORMS_UTILS_DEBUGINFOPROBE_H
-
-#include "llvm/ADT/StringMap.h"
-
-namespace llvm {
-  class Function;
-  class Pass;
-  class DebugInfoProbeImpl;
-
-  /// DebugInfoProbe - This class provides a interface to monitor
-  /// how an optimization pass is preserving debugging information.
-  class DebugInfoProbe {
-    public:
-    DebugInfoProbe();
-    ~DebugInfoProbe();
-
-    /// initialize - Collect information before running an optimization pass.
-    void initialize(StringRef PName, Function &F);
-
-    /// finalize - Collect information after running an optimization pass. This
-    /// must be used after initialization.
-    void finalize(Function &F);
-
-    /// report - Report findings. This should be invoked after finalize.
-    void report();
-
-    private:
-    DebugInfoProbeImpl *pImpl;
-  };
-
-  /// DebugInfoProbeInfo - This class provides an interface that a pass manager
-  /// can use to manage debug info probes.
-  class DebugInfoProbeInfo {
-    StringMap<DebugInfoProbe *> Probes;
-  public:
-    DebugInfoProbeInfo() {}
-
-    /// ~DebugInfoProbeInfo - Report data collected by all probes before deleting
-    /// them.
-    ~DebugInfoProbeInfo();
-
-    /// initialize - Collect information before running an optimization pass.
-    void initialize(Pass *P, Function &F);
-
-    /// finalize - Collect information after running an optimization pass. This
-    /// must be used after initialization.
-    void finalize(Pass *P, Function &F);
-  };
-
-} // End llvm namespace
-
-#endif
diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 5ba1f4045d..aba700ac5c 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -14,10 +14,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/LoopPass.h"
-#include "llvm/DebugInfoProbe.h"
 #include "llvm/Assembly/PrintModulePass.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/Timer.h"
 using namespace llvm;
 
@@ -54,20 +52,6 @@ char PrintLoopPass::ID = 0;
 }
 
 //===----------------------------------------------------------------------===//
-// DebugInfoProbe
-
-static DebugInfoProbeInfo *TheDebugProbe;
-static void createDebugInfoProbe() {
-  if (TheDebugProbe) return;
-
-  // Constructed the first time this is called. This guarantees that the
-  // object will be constructed, if -enable-debug-info-probe is set,
-  // before static globals, thus it will be destroyed before them.
-  static ManagedStatic<DebugInfoProbeInfo> DIP;
-  TheDebugProbe = &*DIP;
-}
-
-//===----------------------------------------------------------------------===//
 // LPPassManager
 //
 
@@ -195,7 +179,6 @@ void LPPassManager::getAnalysisUsage(AnalysisUsage &Info) const {
 bool LPPassManager::runOnFunction(Function &F) {
   LI = &getAnalysis<LoopInfo>();
   bool Changed = false;
-  createDebugInfoProbe();
 
   // Collect inherited analysis from Module level pass manager.
   populateInheritedAnalysis(TPM->activeStack);
@@ -227,21 +210,19 @@ bool LPPassManager::runOnFunction(Function &F) {
     // Run all passes on the current Loop.
     for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
       LoopPass *P = getContainedPass(Index);
+
       dumpPassInfo(P, EXECUTION_MSG, ON_LOOP_MSG,
                    CurrentLoop->getHeader()->getName());
       dumpRequiredSet(P);
 
       initializeAnalysisImpl(P);
-      if (TheDebugProbe)
-        TheDebugProbe->initialize(P, F);
+
       {
         PassManagerPrettyStackEntry X(P, *CurrentLoop->getHeader());
         TimeRegion PassTimer(getPassTimer(P));
 
         Changed |= P->runOnLoop(CurrentLoop, *this);
       }
-      if (TheDebugProbe)
-        TheDebugProbe->finalize(P, F);
 
       if (Changed)
         dumpPassInfo(P, MODIFICATION_MSG, ON_LOOP_MSG,
diff --git a/lib/VMCore/DebugInfoProbe.cpp b/lib/VMCore/DebugInfoProbe.cpp
deleted file mode 100644
index d1275ff58c..0000000000
--- a/lib/VMCore/DebugInfoProbe.cpp
+++ /dev/null
@@ -1,225 +0,0 @@
-//===-- DebugInfoProbe.cpp - DebugInfo Probe ------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements DebugInfoProbe. This probe can be used by a pass
-// manager to analyze how optimizer is treating debugging information.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "debuginfoprobe"
-#include "llvm/DebugInfoProbe.h"
-#include "llvm/Function.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/Metadata.h"
-#include "llvm/PassManager.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/DebugLoc.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/StringRef.h"
-#include <set>
-#include <string>
-
-using namespace llvm;
-
-static cl::opt<bool>
-EnableDebugInfoProbe("enable-debug-info-probe", cl::Hidden,
-                     cl::desc("Enable debug info probe"));
-
-// CreateInfoOutputFile - Return a file stream to print our output on.
-namespace llvm { extern raw_ostream *CreateInfoOutputFile(); }
-
-//===----------------------------------------------------------------------===//
-// DebugInfoProbeImpl - This class implements a interface to monitor
-// how an optimization pass is preserving debugging information.
-
-namespace llvm {
-
-  class DebugInfoProbeImpl {
-  public:
-    DebugInfoProbeImpl() : NumDbgLineLost(0),NumDbgValueLost(0) {}
-    void initialize(StringRef PName, Function &F);
-    void finalize(Function &F);
-    void report();
-  private:
-    unsigned NumDbgLineLost, NumDbgValueLost;
-    std::string PassName;
-    Function *TheFn;
-    std::set<MDNode *> DbgVariables;
-    std::set<Instruction *> MissingDebugLoc;
-  };
-}
-
-//===----------------------------------------------------------------------===//
-// DebugInfoProbeImpl
-
-/// initialize - Collect information before running an optimization pass.
-void DebugInfoProbeImpl::initialize(StringRef PName, Function &F) {
-  if (!EnableDebugInfoProbe) return;
-  PassName = PName;
-
-  DbgVariables.clear();
-  MissingDebugLoc.clear();
-  TheFn = &F;
-
-  for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
-    for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); 
-         BI != BE; ++BI) {
-      if (!isa<PHINode>(BI) && BI->getDebugLoc().isUnknown())
-        MissingDebugLoc.insert(BI);
-      if (!isa<DbgInfoIntrinsic>(BI)) continue;
-      Value *Addr = NULL;
-      MDNode *Node = NULL;
-      if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI)) {
-        Addr = DDI->getAddress();
-        Node = DDI->getVariable();
-      } else if (DbgValueInst *DVI = dyn_cast<DbgValueInst>(BI)) {
-        Addr = DVI->getValue();
-        Node = DVI->getVariable();
-      }
-      if (Addr)
-        DbgVariables.insert(Node);
-    }
-}
-
-/// report - Report findings. This should be invoked after finalize.
-void DebugInfoProbeImpl::report() {
-  if (!EnableDebugInfoProbe) return;
-  if (NumDbgLineLost || NumDbgValueLost) {
-    raw_ostream *OutStream = CreateInfoOutputFile();
-    if (NumDbgLineLost)
-      *OutStream << NumDbgLineLost
-                 << "\t times line number info lost by "
-                 << PassName << "\n";
-    if (NumDbgValueLost)
-      *OutStream << NumDbgValueLost
-                 << "\t times variable info lost by    "
-                 << PassName << "\n";
-    delete OutStream;
-  }
-  NumDbgLineLost = 0;
-  NumDbgValueLost = 0;
-}
-
-/// finalize - Collect information after running an optimization pass. This
-/// must be used after initialization.
-void DebugInfoProbeImpl::finalize(Function &F) {
-  if (!EnableDebugInfoProbe) return;
-  assert (TheFn == &F && "Invalid function to measure!");
-
-  std::set<MDNode *>DbgVariables2;
-  for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI)
-    for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); 
-         BI != BE; ++BI) {
-      if (!isa<PHINode>(BI) && BI->getDebugLoc().isUnknown() &&
-          MissingDebugLoc.count(BI) == 0) {
-        ++NumDbgLineLost;
-        DEBUG(dbgs() << "DebugInfoProbe (" << PassName << "): --- ");
-        DEBUG(BI->print(dbgs()));
-        DEBUG(dbgs() << "\n");
-      }
-      if (!isa<DbgInfoIntrinsic>(BI)) continue;
-      Value *Addr = NULL;
-      MDNode *Node = NULL;
-      if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI)) {
-        Addr = DDI->getAddress();
-        Node = DDI->getVariable();
-      } else if (DbgValueInst *DVI = dyn_cast<DbgValueInst>(BI)) {
-        Addr = DVI->getValue();
-        Node = DVI->getVariable();
-      }
-      if (Addr)
-        DbgVariables2.insert(Node);
-    }
-
-  for (std::set<MDNode *>::iterator I = DbgVariables.begin(), 
-         E = DbgVariables.end(); I != E; ++I) {
-    if (DbgVariables2.count(*I) == 0 && (*I)->getNumOperands() >= 2) {
-      DEBUG(dbgs() 
-            << "DebugInfoProbe("
-            << PassName
-            << "): Losing dbg info for variable: ";
-            if (MDString *MDS = dyn_cast_or_null<MDString>(
-                (*I)->getOperand(2)))
-              dbgs() << MDS->getString();
-            else
-              dbgs() << "...";
-            dbgs() << "\n");
-      ++NumDbgValueLost;
-    }
-  }
-}
-
-//===----------------------------------------------------------------------===//
-// DebugInfoProbe
-
-DebugInfoProbe::DebugInfoProbe() {
-  pImpl = new DebugInfoProbeImpl();
-}
-
-DebugInfoProbe::~DebugInfoProbe() {
-  delete pImpl;
-}
-
-/// initialize - Collect information before running an optimization pass.
-void DebugInfoProbe::initialize(StringRef PName, Function &F) {
-  pImpl->initialize(PName, F);
-}
-
-/// finalize - Collect information after running an optimization pass. This
-/// must be used after initialization.
-void DebugInfoProbe::finalize(Function &F) {
-  pImpl->finalize(F);
-}
-
-/// report - Report findings. This should be invoked after finalize.
-void DebugInfoProbe::report() {
-  pImpl->report();
-}
-
-//===----------------------------------------------------------------------===//
-// DebugInfoProbeInfo
-
-/// ~DebugInfoProbeInfo - Report data collected by all probes before deleting
-/// them.
-DebugInfoProbeInfo::~DebugInfoProbeInfo() {
-  if (!EnableDebugInfoProbe) return;
-    for (StringMap<DebugInfoProbe*>::iterator I = Probes.begin(),
-           E = Probes.end(); I != E; ++I) {
-      I->second->report();
-      delete I->second;
-    }
-  }
-
-/// initialize - Collect information before running an optimization pass.
-void DebugInfoProbeInfo::initialize(Pass *P, Function &F) {
-  if (!EnableDebugInfoProbe) return;
-  if (P->getAsPMDataManager())
-    return;
-
-  StringMapEntry<DebugInfoProbe *> &Entry =
-    Probes.GetOrCreateValue(P->getPassName());
-  DebugInfoProbe *&Probe = Entry.getValue();
-  if (!Probe)
-    Probe = new DebugInfoProbe();
-  Probe->initialize(P->getPassName(), F);
-}
-
-/// finalize - Collect information after running an optimization pass. This
-/// must be used after initialization.
-void DebugInfoProbeInfo::finalize(Pass *P, Function &F) {
-  if (!EnableDebugInfoProbe) return;
-  if (P->getAsPMDataManager())
-    return;
-  StringMapEntry<DebugInfoProbe *> &Entry =
-    Probes.GetOrCreateValue(P->getPassName());
-  DebugInfoProbe *&Probe = Entry.getValue();
-  assert (Probe && "DebugInfoProbe is not initialized!");
-  Probe->finalize(F);
-}
diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index 773862d203..28fbaa6678 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/lib/VMCore/PassManager.cpp
@@ -14,7 +14,6 @@
 
 #include "llvm/PassManagers.h"
 #include "llvm/PassManager.h"
-#include "llvm/DebugInfoProbe.h"
 #include "llvm/Assembly/PrintModulePass.h"
 #include "llvm/Assembly/Writer.h"
 #include "llvm/Support/CommandLine.h"
@@ -26,7 +25,6 @@
 #include "llvm/Support/PassNameParser.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Mutex.h"
-#include "llvm/ADT/StringMap.h"
 #include <algorithm>
 #include <map>
 using namespace llvm;
@@ -422,20 +420,6 @@ char PassManagerImpl::ID = 0;
 namespace {
 
 //===----------------------------------------------------------------------===//
-// DebugInfoProbe
-
-static DebugInfoProbeInfo *TheDebugProbe;
-static void createDebugInfoProbe() {
-  if (TheDebugProbe) return;
-
-  // Constructed the first time this is called. This guarantees that the
-  // object will be constructed, if -enable-debug-info-probe is set,
-  // before static globals, thus it will be destroyed before them.
-  static ManagedStatic<DebugInfoProbeInfo> DIP;
-  TheDebugProbe = &*DIP;
-}
-
-//===----------------------------------------------------------------------===//
 /// TimingInfo Class - This class is used to calculate information about the
 /// amount of time each pass takes to execute.  This only happens when
 /// -time-passes is enabled on the command line.
@@ -1440,7 +1424,6 @@ void FunctionPassManagerImpl::releaseMemoryOnTheFly() {
 bool FunctionPassManagerImpl::run(Function &F) {
   bool Changed = false;
   TimingInfo::createTheTimeInfo();
-  createDebugInfoProbe();
 
   initializeAllAnalysisInfo();
   for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index)
@@ -1488,16 +1471,13 @@ bool FPPassManager::runOnFunction(Function &F) {
     dumpRequiredSet(FP);
 
     initializeAnalysisImpl(FP);
-    if (TheDebugProbe)
-      TheDebugProbe->initialize(FP, F);
+
     {
       PassManagerPrettyStackEntry X(FP, F);
       TimeRegion PassTimer(getPassTimer(FP));
 
       LocalChanged |= FP->runOnFunction(F);
     }
-    if (TheDebugProbe)
-      TheDebugProbe->finalize(FP, F);
 
     Changed |= LocalChanged;
     if (LocalChanged)
@@ -1647,7 +1627,6 @@ Pass* MPPassManager::getOnTheFlyPass(Pass *MP, AnalysisID PI, Function &F){
 bool PassManagerImpl::run(Module &M) {
   bool Changed = false;
   TimingInfo::createTheTimeInfo();
-  createDebugInfoProbe();
 
   dumpArguments();
   dumpPasses();