+++ /dev/null
-//===-- 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
//===----------------------------------------------------------------------===//
#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;
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
//
bool LPPassManager::runOnFunction(Function &F) {
LI = &getAnalysis<LoopInfo>();
bool Changed = false;
- createDebugInfoProbe();
// Collect inherited analysis from Module level pass manager.
populateInheritedAnalysis(TPM->activeStack);
// 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,
+++ /dev/null
-//===-- 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);
-}
#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"
#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;
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
bool FunctionPassManagerImpl::run(Function &F) {
bool Changed = false;
TimingInfo::createTheTimeInfo();
- createDebugInfoProbe();
initializeAllAnalysisInfo();
for (unsigned Index = 0; Index < getNumContainedManagers(); ++Index)
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)
bool PassManagerImpl::run(Module &M) {
bool Changed = false;
TimingInfo::createTheTimeInfo();
- createDebugInfoProbe();
dumpArguments();
dumpPasses();