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-rw-r--r--lib/VMCore/DebugInfoProbe.cpp225
1 files changed, 0 insertions, 225 deletions
diff --git a/lib/VMCore/DebugInfoProbe.cpp b/lib/VMCore/DebugInfoProbe.cpp
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index d1275ff..0000000
--- a/lib/VMCore/DebugInfoProbe.cpp
+++ /dev/null
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-//===-- 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);
-}
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