#define DEBUG_TYPE "insert-gcov-profiling"
-#include "ProfilingUtils.h"
#include "llvm/Transforms/Instrumentation.h"
-#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Instructions.h"
-#include "llvm/Transforms/Utils/ModuleUtils.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/DebugLoc.h"
-#include "llvm/Support/InstIterator.h"
-#include "llvm/Support/IRBuilder.h"
-#include "llvm/Support/PathV2.h"
+#include "ProfilingUtils.h"
#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/UniqueVector.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Pass.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/DebugLoc.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InstIterator.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Utils/ModuleUtils.h"
+#include <algorithm>
#include <string>
#include <utility>
using namespace llvm;
+static cl::opt<std::string>
+DefaultGCOVVersion("default-gcov-version", cl::init("402*"), cl::Hidden,
+ cl::ValueRequired);
+
+GCOVOptions GCOVOptions::getDefault() {
+ GCOVOptions Options;
+ Options.EmitNotes = true;
+ Options.EmitData = true;
+ Options.UseCfgChecksum = false;
+ Options.NoRedZone = false;
+ Options.FunctionNamesInData = true;
+
+ if (DefaultGCOVVersion.size() != 4) {
+ llvm::report_fatal_error(std::string("Invalid -default-gcov-version: ") +
+ DefaultGCOVVersion);
+ }
+ memcpy(Options.Version, DefaultGCOVVersion.c_str(), 4);
+ return Options;
+}
+
namespace {
class GCOVProfiler : public ModulePass {
public:
static char ID;
- GCOVProfiler()
- : ModulePass(ID), EmitNotes(true), EmitData(true), Use402Format(false),
- UseExtraChecksum(false) {
+ GCOVProfiler() : ModulePass(ID), Options(GCOVOptions::getDefault()) {
+ ReversedVersion[0] = Options.Version[3];
+ ReversedVersion[1] = Options.Version[2];
+ ReversedVersion[2] = Options.Version[1];
+ ReversedVersion[3] = Options.Version[0];
+ ReversedVersion[4] = '\0';
initializeGCOVProfilerPass(*PassRegistry::getPassRegistry());
}
- GCOVProfiler(bool EmitNotes, bool EmitData, bool use402Format = false,
- bool useExtraChecksum = false)
- : ModulePass(ID), EmitNotes(EmitNotes), EmitData(EmitData),
- Use402Format(use402Format), UseExtraChecksum(useExtraChecksum) {
- assert((EmitNotes || EmitData) && "GCOVProfiler asked to do nothing?");
+ GCOVProfiler(const GCOVOptions &Options) : ModulePass(ID), Options(Options){
+ assert((Options.EmitNotes || Options.EmitData) &&
+ "GCOVProfiler asked to do nothing?");
+ ReversedVersion[0] = Options.Version[3];
+ ReversedVersion[1] = Options.Version[2];
+ ReversedVersion[2] = Options.Version[1];
+ ReversedVersion[3] = Options.Version[0];
+ ReversedVersion[4] = '\0';
initializeGCOVProfilerPass(*PassRegistry::getPassRegistry());
}
virtual const char *getPassName() const {
return "GCOV Profiler";
}
+
private:
bool runOnModule(Module &M);
- // Create the GCNO files for the Module based on DebugInfo.
- void emitGCNO();
+ // Create the .gcno files for the Module based on DebugInfo.
+ void emitProfileNotes();
// Modify the program to track transitions along edges and call into the
// profiling runtime to emit .gcda files when run.
Constant *getIncrementIndirectCounterFunc();
Constant *getEmitFunctionFunc();
Constant *getEmitArcsFunc();
+ Constant *getDeleteWriteoutFunctionListFunc();
+ Constant *getDeleteFlushFunctionListFunc();
Constant *getEndFileFunc();
// Create or retrieve an i32 state value that is used to represent the
// block number.
GlobalVariable *buildEdgeLookupTable(Function *F,
GlobalVariable *Counter,
- const UniqueVector<BasicBlock *> &Preds,
- const UniqueVector<BasicBlock *> &Succs);
+ const UniqueVector<BasicBlock *>&Preds,
+ const UniqueVector<BasicBlock*>&Succs);
// Add the function to write out all our counters to the global destructor
// list.
- void insertCounterWriteout(SmallVector<std::pair<GlobalVariable *,
- MDNode *>, 8> &);
+ Function *insertCounterWriteout(ArrayRef<std::pair<GlobalVariable*,
+ MDNode*> >);
+ Function *insertFlush(ArrayRef<std::pair<GlobalVariable*, MDNode*> >);
void insertIndirectCounterIncrement();
- std::string mangleName(DICompileUnit CU, std::string NewStem);
+ std::string mangleName(DICompileUnit CU, const char *NewStem);
+
+ GCOVOptions Options;
- bool EmitNotes;
- bool EmitData;
- bool Use402Format;
- bool UseExtraChecksum;
+ // Reversed, NUL-terminated copy of Options.Version.
+ char ReversedVersion[5];
Module *M;
LLVMContext *Ctx;
INITIALIZE_PASS(GCOVProfiler, "insert-gcov-profiling",
"Insert instrumentation for GCOV profiling", false, false)
-ModulePass *llvm::createGCOVProfilerPass(bool EmitNotes, bool EmitData,
- bool Use402Format,
- bool UseExtraChecksum) {
- return new GCOVProfiler(EmitNotes, EmitData, Use402Format, UseExtraChecksum);
+ModulePass *llvm::createGCOVProfilerPass(const GCOVOptions &Options) {
+ return new GCOVProfiler(Options);
+}
+
+static std::string getFunctionName(DISubprogram SP) {
+ if (!SP.getLinkageName().empty())
+ return SP.getLinkageName();
+ return SP.getName();
}
namespace {
SmallVector<uint32_t, 32> Lines;
};
+
+ // Sorting function for deterministic behaviour in GCOVBlock::writeOut.
+ struct StringKeySort {
+ bool operator()(StringMapEntry<GCOVLines *> *LHS,
+ StringMapEntry<GCOVLines *> *RHS) const {
+ return LHS->getKey() < RHS->getKey();
+ }
+ };
+
// Represent a basic block in GCOV. Each block has a unique number in the
// function, number of lines belonging to each block, and a set of edges to
// other blocks.
void writeOut() {
uint32_t Len = 3;
+ SmallVector<StringMapEntry<GCOVLines *> *, 32> SortedLinesByFile;
for (StringMap<GCOVLines *>::iterator I = LinesByFile.begin(),
E = LinesByFile.end(); I != E; ++I) {
Len += I->second->length();
+ SortedLinesByFile.push_back(&*I);
}
writeBytes(LinesTag, 4);
write(Len);
write(Number);
- for (StringMap<GCOVLines *>::iterator I = LinesByFile.begin(),
- E = LinesByFile.end(); I != E; ++I)
- I->second->writeOut();
+
+ StringKeySort Sorter;
+ std::sort(SortedLinesByFile.begin(), SortedLinesByFile.end(), Sorter);
+ for (SmallVectorImpl<StringMapEntry<GCOVLines *> *>::iterator
+ I = SortedLinesByFile.begin(), E = SortedLinesByFile.end();
+ I != E; ++I)
+ (*I)->getValue()->writeOut();
write(0);
write(0);
}
// object users can construct, the blocks and lines will be rooted here.
class GCOVFunction : public GCOVRecord {
public:
- GCOVFunction(DISubprogram SP, raw_ostream *os,
- bool Use402Format, bool UseExtraChecksum) {
+ GCOVFunction(DISubprogram SP, raw_ostream *os, uint32_t Ident,
+ bool UseCfgChecksum) {
this->os = os;
Function *F = SP.getFunction();
ReturnBlock = new GCOVBlock(i++, os);
writeBytes(FunctionTag, 4);
- uint32_t BlockLen = 1 + 1 + 1 + lengthOfGCOVString(SP.getName()) +
+ uint32_t BlockLen = 1 + 1 + 1 + lengthOfGCOVString(getFunctionName(SP)) +
1 + lengthOfGCOVString(SP.getFilename()) + 1;
- if (UseExtraChecksum)
+ if (UseCfgChecksum)
++BlockLen;
write(BlockLen);
- uint32_t Ident = reinterpret_cast<intptr_t>((MDNode*)SP);
write(Ident);
write(0); // lineno checksum
- if (UseExtraChecksum)
+ if (UseCfgChecksum)
write(0); // cfg checksum
- writeGCOVString(SP.getName());
+ writeGCOVString(getFunctionName(SP));
writeGCOVString(SP.getFilename());
write(SP.getLineNumber());
}
DEBUG(dbgs() << Blocks.size() << " blocks.\n");
// Emit edges between blocks.
- for (DenseMap<BasicBlock *, GCOVBlock *>::iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I) {
- GCOVBlock &Block = *I->second;
+ if (Blocks.empty()) return;
+ Function *F = Blocks.begin()->first->getParent();
+ for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) {
+ GCOVBlock &Block = *Blocks[I];
if (Block.OutEdges.empty()) continue;
writeBytes(EdgeTag, 4);
}
// Emit lines for each block.
- for (DenseMap<BasicBlock *, GCOVBlock *>::iterator I = Blocks.begin(),
- E = Blocks.end(); I != E; ++I) {
- I->second->writeOut();
+ for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) {
+ Blocks[I]->writeOut();
}
}
};
}
-std::string GCOVProfiler::mangleName(DICompileUnit CU, std::string NewStem) {
+std::string GCOVProfiler::mangleName(DICompileUnit CU, const char *NewStem) {
if (NamedMDNode *GCov = M->getNamedMetadata("llvm.gcov")) {
for (int i = 0, e = GCov->getNumOperands(); i != e; ++i) {
MDNode *N = GCov->getOperand(i);
SmallString<128> Filename = CU.getFilename();
sys::path::replace_extension(Filename, NewStem);
- return sys::path::filename(Filename.str());
+ StringRef FName = sys::path::filename(Filename);
+ SmallString<128> CurPath;
+ if (sys::fs::current_path(CurPath)) return FName;
+ sys::path::append(CurPath, FName.str());
+ return CurPath.str();
}
bool GCOVProfiler::runOnModule(Module &M) {
this->M = &M;
Ctx = &M.getContext();
- if (EmitNotes) emitGCNO();
- if (EmitData) return emitProfileArcs();
+ if (Options.EmitNotes) emitProfileNotes();
+ if (Options.EmitData) return emitProfileArcs();
return false;
}
-void GCOVProfiler::emitGCNO() {
+void GCOVProfiler::emitProfileNotes() {
NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu");
if (!CU_Nodes) return;
DICompileUnit CU(CU_Nodes->getOperand(i));
std::string ErrorInfo;
raw_fd_ostream out(mangleName(CU, "gcno").c_str(), ErrorInfo,
- raw_fd_ostream::F_Binary);
- if (!Use402Format)
- out.write("oncg*404MVLL", 12);
- else
- out.write("oncg*204MVLL", 12);
+ sys::fs::F_Binary);
+ out.write("oncg", 4);
+ out.write(ReversedVersion, 4);
+ out.write("MVLL", 4);
DIArray SPs = CU.getSubprograms();
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
DISubprogram SP(SPs.getElement(i));
- if (!SP.Verify()) continue;
+ assert((!SP || SP.isSubprogram()) &&
+ "A MDNode in subprograms of a CU should be null or a DISubprogram.");
+ if (!SP)
+ continue;
Function *F = SP.getFunction();
if (!F) continue;
- GCOVFunction Func(SP, &out, Use402Format, UseExtraChecksum);
+ GCOVFunction Func(SP, &out, i, Options.UseCfgChecksum);
for (Function::iterator BB = F->begin(), E = F->end(); BB != E; ++BB) {
GCOVBlock &Block = Func.getBlock(BB);
SmallVector<std::pair<GlobalVariable *, MDNode *>, 8> CountersBySP;
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
DISubprogram SP(SPs.getElement(i));
- if (!SP.Verify()) continue;
+ assert((!SP || SP.isSubprogram()) &&
+ "A MDNode in subprograms of a CU should be null or a DISubprogram.");
+ if (!SP)
+ continue;
Function *F = SP.getFunction();
if (!F) continue;
if (!Result) Result = true;
Value *Counter = Builder.CreateConstInBoundsGEP2_64(Counters, 0,
Edge);
Value *Count = Builder.CreateLoad(Counter);
- Count = Builder.CreateAdd(Count,
- ConstantInt::get(Type::getInt64Ty(*Ctx),1));
+ Count = Builder.CreateAdd(Count, Builder.getInt64(1));
Builder.CreateStore(Count, Counter);
} else if (BranchInst *BI = dyn_cast<BranchInst>(TI)) {
- Value *Sel = Builder.CreateSelect(
- BI->getCondition(),
- ConstantInt::get(Type::getInt64Ty(*Ctx), Edge),
- ConstantInt::get(Type::getInt64Ty(*Ctx), Edge + 1));
+ Value *Sel = Builder.CreateSelect(BI->getCondition(),
+ Builder.getInt64(Edge),
+ Builder.getInt64(Edge + 1));
SmallVector<Value *, 2> Idx;
- Idx.push_back(Constant::getNullValue(Type::getInt64Ty(*Ctx)));
+ Idx.push_back(Builder.getInt64(0));
Idx.push_back(Sel);
Value *Counter = Builder.CreateInBoundsGEP(Counters, Idx);
Value *Count = Builder.CreateLoad(Counter);
- Count = Builder.CreateAdd(Count,
- ConstantInt::get(Type::getInt64Ty(*Ctx),1));
+ Count = Builder.CreateAdd(Count, Builder.getInt64(1));
Builder.CreateStore(Count, Counter);
} else {
ComplexEdgePreds.insert(BB);
ComplexEdgePreds, ComplexEdgeSuccs);
GlobalVariable *EdgeState = getEdgeStateValue();
- Type *Int32Ty = Type::getInt32Ty(*Ctx);
for (int i = 0, e = ComplexEdgePreds.size(); i != e; ++i) {
IRBuilder<> Builder(ComplexEdgePreds[i+1]->getTerminator());
- Builder.CreateStore(ConstantInt::get(Int32Ty, i), EdgeState);
+ Builder.CreateStore(Builder.getInt32(i), EdgeState);
}
for (int i = 0, e = ComplexEdgeSuccs.size(); i != e; ++i) {
// call runtime to perform increment
}
}
- insertCounterWriteout(CountersBySP);
+ Function *WriteoutF = insertCounterWriteout(CountersBySP);
+ Function *FlushF = insertFlush(CountersBySP);
+
+ // Create a small bit of code that registers the "__llvm_gcov_writeout" to
+ // be executed at exit and the "__llvm_gcov_flush" function to be executed
+ // when "__gcov_flush" is called.
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ Function *F = Function::Create(FTy, GlobalValue::InternalLinkage,
+ "__llvm_gcov_init", M);
+ F->setUnnamedAddr(true);
+ F->setLinkage(GlobalValue::InternalLinkage);
+ F->addFnAttr(Attribute::NoInline);
+ if (Options.NoRedZone)
+ F->addFnAttr(Attribute::NoRedZone);
+
+ BasicBlock *BB = BasicBlock::Create(*Ctx, "entry", F);
+ IRBuilder<> Builder(BB);
+
+ FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ Type *Params[] = {
+ PointerType::get(FTy, 0),
+ PointerType::get(FTy, 0)
+ };
+ FTy = FunctionType::get(Builder.getVoidTy(), Params, false);
+
+ // Inialize the environment and register the local writeout and flush
+ // functions.
+ Constant *GCOVInit = M->getOrInsertFunction("llvm_gcov_init", FTy);
+ Builder.CreateCall2(GCOVInit, WriteoutF, FlushF);
+ Builder.CreateRetVoid();
+
+ appendToGlobalCtors(*M, F, 0);
}
if (InsertIndCounterIncrCode)
// read it. Threads and invoke make this untrue.
// emit [(succs * preds) x i64*], logically [succ x [pred x i64*]].
+ size_t TableSize = Succs.size() * Preds.size();
Type *Int64PtrTy = Type::getInt64PtrTy(*Ctx);
- ArrayType *EdgeTableTy = ArrayType::get(
- Int64PtrTy, Succs.size() * Preds.size());
+ ArrayType *EdgeTableTy = ArrayType::get(Int64PtrTy, TableSize);
- Constant **EdgeTable = new Constant*[Succs.size() * Preds.size()];
+ OwningArrayPtr<Constant *> EdgeTable(new Constant*[TableSize]);
Constant *NullValue = Constant::getNullValue(Int64PtrTy);
- for (int i = 0, ie = Succs.size() * Preds.size(); i != ie; ++i)
+ for (size_t i = 0; i != TableSize; ++i)
EdgeTable[i] = NullValue;
unsigned Edge = 0;
if (Successors > 1 && !isa<BranchInst>(TI) && !isa<ReturnInst>(TI)) {
for (int i = 0; i != Successors; ++i) {
BasicBlock *Succ = TI->getSuccessor(i);
- IRBuilder<> builder(Succ);
- Value *Counter = builder.CreateConstInBoundsGEP2_64(Counters, 0,
+ IRBuilder<> Builder(Succ);
+ Value *Counter = Builder.CreateConstInBoundsGEP2_64(Counters, 0,
Edge + i);
EdgeTable[((Succs.idFor(Succ)-1) * Preds.size()) +
(Preds.idFor(BB)-1)] = cast<Constant>(Counter);
Edge += Successors;
}
- ArrayRef<Constant*> V(&EdgeTable[0], Succs.size() * Preds.size());
+ ArrayRef<Constant*> V(&EdgeTable[0], TableSize);
GlobalVariable *EdgeTableGV =
new GlobalVariable(
*M, EdgeTableTy, true, GlobalValue::InternalLinkage,
}
Constant *GCOVProfiler::getStartFileFunc() {
- FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx),
- Type::getInt8PtrTy(*Ctx), false);
+ Type *Args[] = {
+ Type::getInt8PtrTy(*Ctx), // const char *orig_filename
+ Type::getInt8PtrTy(*Ctx), // const char version[4]
+ };
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), Args, false);
return M->getOrInsertFunction("llvm_gcda_start_file", FTy);
}
}
Constant *GCOVProfiler::getEmitFunctionFunc() {
- Type *Args[2] = {
+ Type *Args[3] = {
Type::getInt32Ty(*Ctx), // uint32_t ident
Type::getInt8PtrTy(*Ctx), // const char *function_name
+ Type::getInt8Ty(*Ctx), // uint8_t use_extra_checksum
};
FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), Args, false);
return M->getOrInsertFunction("llvm_gcda_emit_function", FTy);
Type::getInt32Ty(*Ctx), // uint32_t num_counters
Type::getInt64PtrTy(*Ctx), // uint64_t *counters
};
- FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx),
- Args, false);
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), Args, false);
return M->getOrInsertFunction("llvm_gcda_emit_arcs", FTy);
}
+Constant *GCOVProfiler::getDeleteWriteoutFunctionListFunc() {
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ return M->getOrInsertFunction("llvm_delete_writeout_function_list", FTy);
+}
+
+Constant *GCOVProfiler::getDeleteFlushFunctionListFunc() {
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ return M->getOrInsertFunction("llvm_delete_flush_function_list", FTy);
+}
+
Constant *GCOVProfiler::getEndFileFunc() {
FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
return M->getOrInsertFunction("llvm_gcda_end_file", FTy);
return GV;
}
-void GCOVProfiler::insertCounterWriteout(
- SmallVector<std::pair<GlobalVariable *, MDNode *>, 8> &CountersBySP) {
- FunctionType *WriteoutFTy =
- FunctionType::get(Type::getVoidTy(*Ctx), false);
- Function *WriteoutF = Function::Create(WriteoutFTy,
- GlobalValue::InternalLinkage,
- "__llvm_gcov_writeout", M);
+Function *GCOVProfiler::insertCounterWriteout(
+ ArrayRef<std::pair<GlobalVariable *, MDNode *> > CountersBySP) {
+ FunctionType *WriteoutFTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ Function *WriteoutF = M->getFunction("__llvm_gcov_writeout");
+ if (!WriteoutF)
+ WriteoutF = Function::Create(WriteoutFTy, GlobalValue::InternalLinkage,
+ "__llvm_gcov_writeout", M);
WriteoutF->setUnnamedAddr(true);
- BasicBlock *BB = BasicBlock::Create(*Ctx, "", WriteoutF);
+ WriteoutF->addFnAttr(Attribute::NoInline);
+ if (Options.NoRedZone)
+ WriteoutF->addFnAttr(Attribute::NoRedZone);
+
+ BasicBlock *BB = BasicBlock::Create(*Ctx, "entry", WriteoutF);
IRBuilder<> Builder(BB);
Constant *StartFile = getStartFileFunc();
NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu");
if (CU_Nodes) {
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
- DICompileUnit compile_unit(CU_Nodes->getOperand(i));
- std::string FilenameGcda = mangleName(compile_unit, "gcda");
- Builder.CreateCall(StartFile,
- Builder.CreateGlobalStringPtr(FilenameGcda));
- for (SmallVector<std::pair<GlobalVariable *, MDNode *>, 8>::iterator
- I = CountersBySP.begin(), E = CountersBySP.end();
- I != E; ++I) {
- DISubprogram SP(I->second);
- intptr_t ident = reinterpret_cast<intptr_t>(I->second);
- Builder.CreateCall2(EmitFunction,
- ConstantInt::get(Type::getInt32Ty(*Ctx), ident),
- Builder.CreateGlobalStringPtr(SP.getName()));
-
- GlobalVariable *GV = I->first;
+ DICompileUnit CU(CU_Nodes->getOperand(i));
+ std::string FilenameGcda = mangleName(CU, "gcda");
+ Builder.CreateCall2(StartFile,
+ Builder.CreateGlobalStringPtr(FilenameGcda),
+ Builder.CreateGlobalStringPtr(ReversedVersion));
+ for (unsigned j = 0, e = CountersBySP.size(); j != e; ++j) {
+ DISubprogram SP(CountersBySP[j].second);
+ Builder.CreateCall3(
+ EmitFunction, Builder.getInt32(j),
+ Options.FunctionNamesInData ?
+ Builder.CreateGlobalStringPtr(getFunctionName(SP)) :
+ Constant::getNullValue(Builder.getInt8PtrTy()),
+ Builder.getInt8(Options.UseCfgChecksum));
+
+ GlobalVariable *GV = CountersBySP[j].first;
unsigned Arcs =
cast<ArrayType>(GV->getType()->getElementType())->getNumElements();
Builder.CreateCall2(EmitArcs,
- ConstantInt::get(Type::getInt32Ty(*Ctx), Arcs),
+ Builder.getInt32(Arcs),
Builder.CreateConstGEP2_64(GV, 0, 0));
}
Builder.CreateCall(EndFile);
}
}
- Builder.CreateRetVoid();
- // Create a small bit of code that registers the "__llvm_gcov_writeout"
- // function to be executed at exit.
- FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
- Function *F = Function::Create(FTy, GlobalValue::InternalLinkage,
- "__llvm_gcov_init", M);
- F->setUnnamedAddr(true);
- F->setLinkage(GlobalValue::InternalLinkage);
- F->addFnAttr(Attribute::NoInline);
-
- BB = BasicBlock::Create(*Ctx, "entry", F);
- Builder.SetInsertPoint(BB);
-
- FTy = FunctionType::get(Type::getInt32Ty(*Ctx),
- PointerType::get(FTy, 0), false);
- Function *AtExitFn =
- Function::Create(FTy, GlobalValue::ExternalLinkage, "atexit", M);
- Builder.CreateCall(AtExitFn, WriteoutF);
Builder.CreateRetVoid();
-
- appendToGlobalCtors(*M, F, 0);
+ return WriteoutF;
}
void GCOVProfiler::insertIndirectCounterIncrement() {
Fn->setUnnamedAddr(true);
Fn->setLinkage(GlobalValue::InternalLinkage);
Fn->addFnAttr(Attribute::NoInline);
-
- Type *Int32Ty = Type::getInt32Ty(*Ctx);
- Type *Int64Ty = Type::getInt64Ty(*Ctx);
- Constant *NegOne = ConstantInt::get(Int32Ty, 0xffffffff);
+ if (Options.NoRedZone)
+ Fn->addFnAttr(Attribute::NoRedZone);
// Create basic blocks for function.
BasicBlock *BB = BasicBlock::Create(*Ctx, "entry", Fn);
Argument *Arg = Fn->arg_begin();
Arg->setName("predecessor");
Value *Pred = Builder.CreateLoad(Arg, "pred");
- Value *Cond = Builder.CreateICmpEQ(Pred, NegOne);
+ Value *Cond = Builder.CreateICmpEQ(Pred, Builder.getInt32(0xffffffff));
BranchInst::Create(Exit, PredNotNegOne, Cond, BB);
Builder.SetInsertPoint(PredNotNegOne);
// uint64_t *counter = counters[pred];
// if (!counter) return;
- Value *ZExtPred = Builder.CreateZExt(Pred, Int64Ty);
+ Value *ZExtPred = Builder.CreateZExt(Pred, Builder.getInt64Ty());
Arg = llvm::next(Fn->arg_begin());
Arg->setName("counters");
Value *GEP = Builder.CreateGEP(Arg, ZExtPred);
Value *Counter = Builder.CreateLoad(GEP, "counter");
Cond = Builder.CreateICmpEQ(Counter,
- Constant::getNullValue(Int64Ty->getPointerTo()));
+ Constant::getNullValue(
+ Builder.getInt64Ty()->getPointerTo()));
Builder.CreateCondBr(Cond, Exit, CounterEnd);
// ++*counter;
Builder.SetInsertPoint(CounterEnd);
Value *Add = Builder.CreateAdd(Builder.CreateLoad(Counter),
- ConstantInt::get(Int64Ty, 1));
+ Builder.getInt64(1));
Builder.CreateStore(Add, Counter);
Builder.CreateBr(Exit);
Builder.SetInsertPoint(Exit);
Builder.CreateRetVoid();
}
+
+Function *GCOVProfiler::
+insertFlush(ArrayRef<std::pair<GlobalVariable*, MDNode*> > CountersBySP) {
+ FunctionType *FTy = FunctionType::get(Type::getVoidTy(*Ctx), false);
+ Function *FlushF = M->getFunction("__llvm_gcov_flush");
+ if (!FlushF)
+ FlushF = Function::Create(FTy, GlobalValue::InternalLinkage,
+ "__llvm_gcov_flush", M);
+ else
+ FlushF->setLinkage(GlobalValue::InternalLinkage);
+ FlushF->setUnnamedAddr(true);
+ FlushF->addFnAttr(Attribute::NoInline);
+ if (Options.NoRedZone)
+ FlushF->addFnAttr(Attribute::NoRedZone);
+
+ BasicBlock *Entry = BasicBlock::Create(*Ctx, "entry", FlushF);
+
+ // Write out the current counters.
+ Constant *WriteoutF = M->getFunction("__llvm_gcov_writeout");
+ assert(WriteoutF && "Need to create the writeout function first!");
+
+ IRBuilder<> Builder(Entry);
+ Builder.CreateCall(WriteoutF);
+
+ // Zero out the counters.
+ for (ArrayRef<std::pair<GlobalVariable *, MDNode *> >::iterator
+ I = CountersBySP.begin(), E = CountersBySP.end();
+ I != E; ++I) {
+ GlobalVariable *GV = I->first;
+ Constant *Null = Constant::getNullValue(GV->getType()->getElementType());
+ Builder.CreateStore(Null, GV);
+ }
+
+ Type *RetTy = FlushF->getReturnType();
+ if (RetTy == Type::getVoidTy(*Ctx))
+ Builder.CreateRetVoid();
+ else if (RetTy->isIntegerTy())
+ // Used if __llvm_gcov_flush was implicitly declared.
+ Builder.CreateRet(ConstantInt::get(RetTy, 0));
+ else
+ report_fatal_error("invalid return type for __llvm_gcov_flush");
+
+ return FlushF;
+}
projects / oota-llvm.git / blobdiff