#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
-#include "llvm/CodeGen/MachineDebugInfoDesc.h"
+#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Instructions.h"
#include "llvm/Module.h"
#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Streams.h"
using namespace llvm;
using namespace llvm::dwarf;
char MachineModuleInfo::ID = 0;
//===----------------------------------------------------------------------===//
-
-/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
-/// specified value in their initializer somewhere.
-static void
-getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
- // Scan though value users.
- for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
- // If the user is a GlobalVariable then add to result.
- Result.push_back(GV);
- } else if (Constant *C = dyn_cast<Constant>(*I)) {
- // If the user is a constant variable then scan its users
- getGlobalVariablesUsing(C, Result);
- }
- }
-}
-
-/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
-/// named GlobalVariable.
-static void
-getGlobalVariablesUsing(Module &M, const std::string &RootName,
- std::vector<GlobalVariable*> &Result) {
- std::vector<const Type*> FieldTypes;
- FieldTypes.push_back(Type::Int32Ty);
- FieldTypes.push_back(Type::Int32Ty);
-
- // Get the GlobalVariable root.
- GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
- StructType::get(FieldTypes));
-
- // If present and linkonce then scan for users.
- if (UseRoot && UseRoot->hasLinkOnceLinkage())
- getGlobalVariablesUsing(UseRoot, Result);
-}
-
-/// isStringValue - Return true if the given value can be coerced to a string.
-///
-static bool isStringValue(Value *V) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
- if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
- ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
- return Init->isString();
- }
- } else if (Constant *C = dyn_cast<Constant>(V)) {
- if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
- return isStringValue(GV);
- else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
- if (CE->getOpcode() == Instruction::GetElementPtr) {
- if (CE->getNumOperands() == 3 &&
- cast<Constant>(CE->getOperand(1))->isNullValue() &&
- isa<ConstantInt>(CE->getOperand(2))) {
- return isStringValue(CE->getOperand(0));
- }
- }
- }
- }
- return false;
-}
-
-/// getGlobalVariable - Return either a direct or cast Global value.
-///
-static GlobalVariable *getGlobalVariable(Value *V) {
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
- return GV;
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::BitCast) {
- return dyn_cast<GlobalVariable>(CE->getOperand(0));
- } else if (CE->getOpcode() == Instruction::GetElementPtr) {
- for (unsigned int i=1; i<CE->getNumOperands(); i++) {
- if (!CE->getOperand(i)->isNullValue())
- return NULL;
- }
- return dyn_cast<GlobalVariable>(CE->getOperand(0));
- }
- }
- return NULL;
-}
-
-/// isGlobalVariable - Return true if the given value can be coerced to a
-/// GlobalVariable.
-static bool isGlobalVariable(Value *V) {
- if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
- return true;
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (CE->getOpcode() == Instruction::BitCast) {
- return isa<GlobalVariable>(CE->getOperand(0));
- } else if (CE->getOpcode() == Instruction::GetElementPtr) {
- for (unsigned int i=1; i<CE->getNumOperands(); i++) {
- if (!CE->getOperand(i)->isNullValue())
- return false;
- }
- return isa<GlobalVariable>(CE->getOperand(0));
- }
- }
- return false;
-}
-
-//===----------------------------------------------------------------------===//
-
-/// ApplyToFields - Target the visitor to each field of the debug information
-/// descriptor.
-void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
- DD->ApplyToFields(this);
-}
-
-namespace {
-
-//===----------------------------------------------------------------------===//
-/// DICountVisitor - This DIVisitor counts all the fields in the supplied debug
-/// the supplied DebugInfoDesc.
-class DICountVisitor : public DIVisitor {
-private:
- unsigned Count; // Running count of fields.
-
-public:
- DICountVisitor() : DIVisitor(), Count(0) {}
-
- // Accessors.
- unsigned getCount() const { return Count; }
-
- /// Apply - Count each of the fields.
- ///
- virtual void Apply(int &Field) { ++Count; }
- virtual void Apply(unsigned &Field) { ++Count; }
- virtual void Apply(int64_t &Field) { ++Count; }
- virtual void Apply(uint64_t &Field) { ++Count; }
- virtual void Apply(bool &Field) { ++Count; }
- virtual void Apply(std::string &Field) { ++Count; }
- virtual void Apply(DebugInfoDesc *&Field) { ++Count; }
- virtual void Apply(GlobalVariable *&Field) { ++Count; }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- ++Count;
- }
-};
-
-//===----------------------------------------------------------------------===//
-/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
-/// supplied DebugInfoDesc.
-class DIDeserializeVisitor : public DIVisitor {
-private:
- DIDeserializer &DR; // Active deserializer.
- unsigned I; // Current operand index.
- ConstantStruct *CI; // GlobalVariable constant initializer.
-
-public:
- DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
- : DIVisitor(), DR(D), I(0), CI(cast<ConstantStruct>(GV->getInitializer()))
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getSExtValue();
- }
- virtual void Apply(unsigned &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(int64_t &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getSExtValue();
- }
- virtual void Apply(uint64_t &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(bool &Field) {
- Constant *C = CI->getOperand(I++);
- Field = cast<ConstantInt>(C)->getZExtValue();
- }
- virtual void Apply(std::string &Field) {
- Constant *C = CI->getOperand(I++);
- // Fills in the string if it succeeds
- if (!GetConstantStringInfo(C, Field))
- Field.clear();
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- Constant *C = CI->getOperand(I++);
- Field = DR.Deserialize(C);
- }
- virtual void Apply(GlobalVariable *&Field) {
- Constant *C = CI->getOperand(I++);
- Field = getGlobalVariable(C);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- Field.resize(0);
- Constant *C = CI->getOperand(I++);
- GlobalVariable *GV = getGlobalVariable(C);
- if (GV->hasInitializer()) {
- if (ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer())) {
- for (unsigned i = 0, N = CA->getNumOperands(); i < N; ++i) {
- GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
- DebugInfoDesc *DE = DR.Deserialize(GVE);
- Field.push_back(DE);
- }
- } else if (GV->getInitializer()->isNullValue()) {
- if (const ArrayType *T =
- dyn_cast<ArrayType>(GV->getType()->getElementType())) {
- Field.resize(T->getNumElements());
- }
- }
- }
- }
-};
-
-//===----------------------------------------------------------------------===//
-/// DISerializeVisitor - This DIVisitor serializes all the fields in
-/// the supplied DebugInfoDesc.
-class DISerializeVisitor : public DIVisitor {
-private:
- DISerializer &SR; // Active serializer.
- std::vector<Constant*> &Elements; // Element accumulator.
-
-public:
- DISerializeVisitor(DISerializer &S, std::vector<Constant*> &E)
- : DIVisitor()
- , SR(S)
- , Elements(E)
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Elements.push_back(ConstantInt::get(Type::Int32Ty, int32_t(Field)));
- }
- virtual void Apply(unsigned &Field) {
- Elements.push_back(ConstantInt::get(Type::Int32Ty, uint32_t(Field)));
- }
- virtual void Apply(int64_t &Field) {
- Elements.push_back(ConstantInt::get(Type::Int64Ty, int64_t(Field)));
- }
- virtual void Apply(uint64_t &Field) {
- Elements.push_back(ConstantInt::get(Type::Int64Ty, uint64_t(Field)));
- }
- virtual void Apply(bool &Field) {
- Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
- }
- virtual void Apply(std::string &Field) {
- Elements.push_back(SR.getString(Field));
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- GlobalVariable *GV = NULL;
-
- // If non-NULL then convert to global.
- if (Field) GV = SR.Serialize(Field);
-
- // FIXME - At some point should use specific type.
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
-
- if (GV) {
- // Set to pointer to global.
- Elements.push_back(ConstantExpr::getBitCast(GV, EmptyTy));
- } else {
- // Use NULL.
- Elements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
- virtual void Apply(GlobalVariable *&Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- if (Field) {
- Elements.push_back(ConstantExpr::getBitCast(Field, EmptyTy));
- } else {
- Elements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- unsigned N = Field.size();
- ArrayType *AT = ArrayType::get(EmptyTy, N);
- std::vector<Constant *> ArrayElements;
-
- for (unsigned i = 0; i < N; ++i) {
- if (DebugInfoDesc *Element = Field[i]) {
- GlobalVariable *GVE = SR.Serialize(Element);
- Constant *CE = ConstantExpr::getBitCast(GVE, EmptyTy);
- ArrayElements.push_back(cast<Constant>(CE));
- } else {
- ArrayElements.push_back(ConstantPointerNull::get(EmptyTy));
- }
- }
-
- Constant *CA = ConstantArray::get(AT, ArrayElements);
- GlobalVariable *CAGV = new GlobalVariable(AT, true,
- GlobalValue::InternalLinkage,
- CA, "llvm.dbg.array",
- SR.getModule());
- CAGV->setSection("llvm.metadata");
- Constant *CAE = ConstantExpr::getBitCast(CAGV, EmptyTy);
- Elements.push_back(CAE);
- }
-};
-
-//===----------------------------------------------------------------------===//
-/// DIGetTypesVisitor - This DIVisitor gathers all the field types in
-/// the supplied DebugInfoDesc.
-class DIGetTypesVisitor : public DIVisitor {
-private:
- DISerializer &SR; // Active serializer.
- std::vector<const Type*> &Fields; // Type accumulator.
-
-public:
- DIGetTypesVisitor(DISerializer &S, std::vector<const Type*> &F)
- : DIVisitor()
- , SR(S)
- , Fields(F)
- {}
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Fields.push_back(Type::Int32Ty);
- }
- virtual void Apply(unsigned &Field) {
- Fields.push_back(Type::Int32Ty);
- }
- virtual void Apply(int64_t &Field) {
- Fields.push_back(Type::Int64Ty);
- }
- virtual void Apply(uint64_t &Field) {
- Fields.push_back(Type::Int64Ty);
- }
- virtual void Apply(bool &Field) {
- Fields.push_back(Type::Int1Ty);
- }
- virtual void Apply(std::string &Field) {
- Fields.push_back(SR.getStrPtrType());
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- // FIXME - At some point should use specific type.
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
- virtual void Apply(GlobalVariable *&Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- const PointerType *EmptyTy = SR.getEmptyStructPtrType();
- Fields.push_back(EmptyTy);
- }
-};
-
-//===----------------------------------------------------------------------===//
-/// DIVerifyVisitor - This DIVisitor verifies all the field types against
-/// a constant initializer.
-class DIVerifyVisitor : public DIVisitor {
-private:
- DIVerifier &VR; // Active verifier.
- bool IsValid; // Validity status.
- unsigned I; // Current operand index.
- ConstantStruct *CI; // GlobalVariable constant initializer.
-
-public:
- DIVerifyVisitor(DIVerifier &V, GlobalVariable *GV)
- : DIVisitor()
- , VR(V)
- , IsValid(true)
- , I(0)
- , CI(cast<ConstantStruct>(GV->getInitializer()))
- {
- }
-
- // Accessors.
- bool isValid() const { return IsValid; }
-
- /// Apply - Set the value of each of the fields.
- ///
- virtual void Apply(int &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(unsigned &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(int64_t &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(uint64_t &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C);
- }
- virtual void Apply(bool &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isa<ConstantInt>(C) && C->getType() == Type::Int1Ty;
- }
- virtual void Apply(std::string &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid &&
- (!C || isStringValue(C) || C->isNullValue());
- }
- virtual void Apply(DebugInfoDesc *&Field) {
- // FIXME - Prepare the correct descriptor.
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- }
- virtual void Apply(GlobalVariable *&Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- Constant *C = CI->getOperand(I++);
- IsValid = IsValid && isGlobalVariable(C);
- if (!IsValid) return;
-
- GlobalVariable *GV = getGlobalVariable(C);
- IsValid = IsValid && GV && GV->hasInitializer();
- if (!IsValid) return;
-
- ConstantArray *CA = dyn_cast<ConstantArray>(GV->getInitializer());
- IsValid = IsValid && CA;
- if (!IsValid) return;
-
- for (unsigned i = 0, N = CA->getNumOperands(); IsValid && i < N; ++i) {
- IsValid = IsValid && isGlobalVariable(CA->getOperand(i));
- if (!IsValid) return;
-
- GlobalVariable *GVE = getGlobalVariable(CA->getOperand(i));
- VR.Verify(GVE);
- }
- }
-};
-
-}
-
-//===----------------------------------------------------------------------===//
-
-DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
- return Deserialize(getGlobalVariable(V));
-}
-DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
- // Handle NULL.
- if (!GV) return NULL;
-
- // Check to see if it has been already deserialized.
- DebugInfoDesc *&Slot = GlobalDescs[GV];
- if (Slot) return Slot;
-
- // Get the Tag from the global.
- unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
-
- // Create an empty instance of the correct sort.
- Slot = DebugInfoDesc::DescFactory(Tag);
-
- // If not a user defined descriptor.
- if (Slot) {
- // Deserialize the fields.
- DIDeserializeVisitor DRAM(*this, GV);
- DRAM.ApplyToFields(Slot);
- }
-
- return Slot;
-}
-
-//===----------------------------------------------------------------------===//
-
-/// getStrPtrType - Return a "sbyte *" type.
-///
-const PointerType *DISerializer::getStrPtrType() {
- // If not already defined.
- if (!StrPtrTy) {
- // Construct the pointer to signed bytes.
- StrPtrTy = PointerType::getUnqual(Type::Int8Ty);
- }
-
- return StrPtrTy;
-}
-
-/// getEmptyStructPtrType - Return a "{ }*" type.
-///
-const PointerType *DISerializer::getEmptyStructPtrType() {
- // If not already defined.
- if (EmptyStructPtrTy) return EmptyStructPtrTy;
-
- // Construct the pointer to empty structure type.
- const StructType *EmptyStructTy =
- StructType::get(std::vector<const Type*>());
-
- // Construct the pointer to empty structure type.
- EmptyStructPtrTy = PointerType::getUnqual(EmptyStructTy);
- return EmptyStructPtrTy;
-}
-
-/// getTagType - Return the type describing the specified descriptor (via tag.)
-///
-const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
- // Attempt to get the previously defined type.
- StructType *&Ty = TagTypes[DD->getTag()];
-
- // If not already defined.
- if (!Ty) {
- // Set up fields vector.
- std::vector<const Type*> Fields;
- // Get types of fields.
- DIGetTypesVisitor GTAM(*this, Fields);
- GTAM.ApplyToFields(DD);
-
- // Construct structured type.
- Ty = StructType::get(Fields);
-
- // Register type name with module.
- M->addTypeName(DD->getTypeString(), Ty);
- }
-
- return Ty;
-}
-
-/// getString - Construct the string as constant string global.
-///
-Constant *DISerializer::getString(const std::string &String) {
- // Check string cache for previous edition.
- Constant *&Slot = StringCache[String.c_str()];
-
- // Return Constant if previously defined.
- if (Slot) return Slot;
-
- // If empty string then use a sbyte* null instead.
- if (String.empty()) {
- Slot = ConstantPointerNull::get(getStrPtrType());
- } else {
- // Construct string as an llvm constant.
- Constant *ConstStr = ConstantArray::get(String);
-
- // Otherwise create and return a new string global.
- GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
- GlobalVariable::InternalLinkage,
- ConstStr, ".str", M);
- StrGV->setSection("llvm.metadata");
-
- // Convert to generic string pointer.
- Slot = ConstantExpr::getBitCast(StrGV, getStrPtrType());
- }
-
- return Slot;
-
-}
-
-/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
-/// so that it can be serialized to a .bc or .ll file.
-GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
- // Check if the DebugInfoDesc is already in the map.
- GlobalVariable *&Slot = DescGlobals[DD];
-
- // See if DebugInfoDesc exists, if so return prior GlobalVariable.
- if (Slot) return Slot;
-
- // Get the type associated with the Tag.
- const StructType *Ty = getTagType(DD);
-
- // Create the GlobalVariable early to prevent infinite recursion.
- GlobalVariable *GV = new GlobalVariable(Ty, true, DD->getLinkage(),
- NULL, DD->getDescString(), M);
- GV->setSection("llvm.metadata");
-
- // Insert new GlobalVariable in DescGlobals map.
- Slot = GV;
-
- // Set up elements vector
- std::vector<Constant*> Elements;
- // Add fields.
- DISerializeVisitor SRAM(*this, Elements);
- SRAM.ApplyToFields(DD);
-
- // Set the globals initializer.
- GV->setInitializer(ConstantStruct::get(Ty, Elements));
-
- return GV;
-}
-
-/// addDescriptor - Directly connect DD with existing GV.
-void DISerializer::addDescriptor(DebugInfoDesc *DD,
- GlobalVariable *GV) {
- DescGlobals[DD] = GV;
-}
-
-//===----------------------------------------------------------------------===//
-
-/// Verify - Return true if the GlobalVariable appears to be a valid
-/// serialization of a DebugInfoDesc.
-bool DIVerifier::Verify(Value *V) {
- return !V || Verify(getGlobalVariable(V));
-}
-bool DIVerifier::Verify(GlobalVariable *GV) {
- // NULLs are valid.
- if (!GV) return true;
-
- // Check prior validity.
- unsigned &ValiditySlot = Validity[GV];
-
- // If visited before then use old state.
- if (ValiditySlot) return ValiditySlot == Valid;
-
- // Assume validity for the time being (recursion.)
- ValiditySlot = Valid;
-
- // Make sure the global is internal or link once (anchor.)
- if (GV->getLinkage() != GlobalValue::InternalLinkage &&
- GV->getLinkage() != GlobalValue::LinkOnceLinkage) {
- ValiditySlot = Invalid;
- return false;
- }
-
- // Get the Tag.
- unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
-
- // Check for user defined descriptors.
- if (Tag == DW_TAG_invalid) {
- ValiditySlot = Valid;
- return true;
- }
-
- // Get the Version.
- unsigned Version = DebugInfoDesc::VersionFromGlobal(GV);
-
- // Check for version mismatch.
- if (Version != LLVMDebugVersion) {
- ValiditySlot = Invalid;
- return false;
- }
-
- // Construct an empty DebugInfoDesc.
- DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
-
- // Allow for user defined descriptors.
- if (!DD) return true;
-
- // Get the initializer constant.
- ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
-
- // Get the operand count.
- unsigned N = CI->getNumOperands();
-
- // Get the field count.
- unsigned &CountSlot = Counts[Tag];
- if (!CountSlot) {
- // Check the operand count to the field count
- DICountVisitor CTAM;
- CTAM.ApplyToFields(DD);
- CountSlot = CTAM.getCount();
- }
-
- // Field count must be at most equal operand count.
- if (CountSlot > N) {
- delete DD;
- ValiditySlot = Invalid;
- return false;
- }
-
- // Check each field for valid type.
- DIVerifyVisitor VRAM(*this, GV);
- VRAM.ApplyToFields(DD);
-
- // Release empty DebugInfoDesc.
- delete DD;
-
- // If fields are not valid.
- if (!VRAM.isValid()) {
- ValiditySlot = Invalid;
- return false;
- }
- return true;
-}
-
-/// isVerified - Return true if the specified GV has already been
-/// verified as a debug information descriptor.
-bool DIVerifier::isVerified(GlobalVariable *GV) {
- unsigned &ValiditySlot = Validity[GV];
- if (ValiditySlot) return ValiditySlot == Valid;
- return false;
-}
-
-//===----------------------------------------------------------------------===//
-
-DebugScope::~DebugScope() {
- for (unsigned i = 0, e = Scopes.size(); i < e; ++i) delete Scopes[i];
- for (unsigned i = 0, e = Variables.size(); i < e; ++i) delete Variables[i];
-}
-
-//===----------------------------------------------------------------------===//
-
MachineModuleInfo::MachineModuleInfo()
-: ImmutablePass((intptr_t)&ID)
-, DR()
-, VR()
-, CompileUnits()
-, Directories()
-, SourceFiles()
-, Lines()
+: ImmutablePass(&ID)
, LabelIDList()
-, ScopeMap()
-, RootScope(NULL)
, FrameMoves()
, LandingPads()
, Personalities()
, CallsEHReturn(0)
, CallsUnwindInit(0)
+, DbgInfoAvailable(false)
{
// Always emit "no personality" info
Personalities.push_back(NULL);
/// EndFunction - Discard function meta information.
///
void MachineModuleInfo::EndFunction() {
- // Clean up scope information.
- if (RootScope) {
- delete RootScope;
- ScopeMap.clear();
- RootScope = NULL;
- }
-
- // Clean up line info.
- Lines.clear();
-
// Clean up frame info.
FrameMoves.clear();
CallsUnwindInit = 0;
}
-/// getDescFor - Convert a Value to a debug information descriptor.
-///
-// FIXME - use new Value type when available.
-DebugInfoDesc *MachineModuleInfo::getDescFor(Value *V) {
- return DR.Deserialize(V);
-}
-
/// AnalyzeModule - Scan the module for global debug information.
///
void MachineModuleInfo::AnalyzeModule(Module &M) {
- SetupCompileUnits(M);
-
// Insert functions in the llvm.used array into UsedFunctions.
GlobalVariable *GV = M.getGlobalVariable("llvm.used");
if (!GV || !GV->hasInitializer()) return;
}
}
-/// SetupCompileUnits - Set up the unique vector of compile units.
-///
-void MachineModuleInfo::SetupCompileUnits(Module &M) {
- std::vector<void*> CUList;
- CompileUnitDesc CUD;
- getAnchoredDescriptors(M, &CUD, CUList);
-
- for (unsigned i = 0, e = CUList.size(); i < e; i++)
- CompileUnits.insert((CompileUnitDesc*)CUList[i]);
-}
-
-/// getCompileUnits - Return a vector of debug compile units.
-///
-const UniqueVector<CompileUnitDesc *> MachineModuleInfo::getCompileUnits()const{
- return CompileUnits;
-}
-
-/// getAnchoredDescriptors - Return a vector of anchored debug descriptors.
-///
-void
-MachineModuleInfo::getAnchoredDescriptors(Module &M, const AnchoredDesc *Desc,
- std::vector<void*> &AnchoredDescs) {
- std::vector<GlobalVariable*> Globals;
- getGlobalVariablesUsing(M, Desc->getAnchorString(), Globals);
-
- for (unsigned i = 0, e = Globals.size(); i < e; ++i) {
- GlobalVariable *GV = Globals[i];
-
- // FIXME - In the short term, changes are too drastic to continue.
- if (DebugInfoDesc::TagFromGlobal(GV) == Desc->getTag() &&
- DebugInfoDesc::VersionFromGlobal(GV) == LLVMDebugVersion)
- AnchoredDescs.push_back(DR.Deserialize(GV));
- }
-}
-
-/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
-/// named GlobalVariable.
-void
-MachineModuleInfo::getGlobalVariablesUsing(Module &M,
- const std::string &RootName,
- std::vector<GlobalVariable*> &Globals) {
- return ::getGlobalVariablesUsing(M, RootName, Globals);
-}
-
-/// RecordSourceLine - Records location information and associates it with a
-/// debug label. Returns a unique label ID used to generate a label and
-/// provide correspondence to the source line list.
-unsigned MachineModuleInfo::RecordSourceLine(unsigned Line, unsigned Column,
- unsigned Source) {
- unsigned ID = NextLabelID();
- Lines.push_back(SourceLineInfo(Line, Column, Source, ID));
- return ID;
-}
-
-/// RecordSource - Register a source file with debug info. Returns an source
-/// ID.
-unsigned MachineModuleInfo::RecordSource(const std::string &Directory,
- const std::string &Source) {
- unsigned DirectoryID = Directories.insert(Directory);
- return SourceFiles.insert(SourceFileInfo(DirectoryID, Source));
-}
-unsigned MachineModuleInfo::RecordSource(const CompileUnitDesc *CompileUnit) {
- return RecordSource(CompileUnit->getDirectory(),
- CompileUnit->getFileName());
-}
-
-/// RecordRegionStart - Indicate the start of a region.
-///
-unsigned MachineModuleInfo::RecordRegionStart(Value *V) {
- // FIXME - need to be able to handle split scopes because of bb cloning.
- DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
- DebugScope *Scope = getOrCreateScope(ScopeDesc);
- unsigned ID = NextLabelID();
- if (!Scope->getStartLabelID()) Scope->setStartLabelID(ID);
- return ID;
-}
-
-/// RecordRegionEnd - Indicate the end of a region.
-///
-unsigned MachineModuleInfo::RecordRegionEnd(Value *V) {
- // FIXME - need to be able to handle split scopes because of bb cloning.
- DebugInfoDesc *ScopeDesc = DR.Deserialize(V);
- DebugScope *Scope = getOrCreateScope(ScopeDesc);
- unsigned ID = NextLabelID();
- Scope->setEndLabelID(ID);
- return ID;
-}
-
-/// RecordVariable - Indicate the declaration of a local variable.
-///
-void MachineModuleInfo::RecordVariable(GlobalValue *GV, unsigned FrameIndex) {
- VariableDesc *VD = cast<VariableDesc>(DR.Deserialize(GV));
- DebugScope *Scope = getOrCreateScope(VD->getContext());
- DebugVariable *DV = new DebugVariable(VD, FrameIndex);
- Scope->AddVariable(DV);
-}
-
-/// getOrCreateScope - Returns the scope associated with the given descriptor.
-///
-DebugScope *MachineModuleInfo::getOrCreateScope(DebugInfoDesc *ScopeDesc) {
- DebugScope *&Slot = ScopeMap[ScopeDesc];
- if (!Slot) {
- // FIXME - breaks down when the context is an inlined function.
- DebugInfoDesc *ParentDesc = NULL;
- if (BlockDesc *Block = dyn_cast<BlockDesc>(ScopeDesc)) {
- ParentDesc = Block->getContext();
- }
- DebugScope *Parent = ParentDesc ? getOrCreateScope(ParentDesc) : NULL;
- Slot = new DebugScope(Parent, ScopeDesc);
- if (Parent) {
- Parent->AddScope(Slot);
- } else if (RootScope) {
- // FIXME - Add inlined function scopes to the root so we can delete
- // them later. Long term, handle inlined functions properly.
- RootScope->AddScope(Slot);
- } else {
- // First function is top level function.
- RootScope = Slot;
- }
- }
- return Slot;
-}
-
//===-EH-------------------------------------------------------------------===//
/// getOrCreateLandingPadInfo - Find or create an LandingPadInfo for the
/// specified MachineBasicBlock.
-LandingPadInfo &
-MachineModuleInfo::getOrCreateLandingPadInfo(MachineBasicBlock *LandingPad) {
+LandingPadInfo &MachineModuleInfo::getOrCreateLandingPadInfo
+ (MachineBasicBlock *LandingPad) {
unsigned N = LandingPads.size();
-
for (unsigned i = 0; i < N; ++i) {
LandingPadInfo &LP = LandingPads[i];
if (LP.LandingPadBlock == LandingPad)
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
LP.Personality = Personality;
- for (unsigned i = 0, e = Personalities.size(); i < e; ++i)
+ for (unsigned i = 0; i < Personalities.size(); ++i)
if (Personalities[i] == Personality)
return;
void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
std::vector<GlobalVariable *> &TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- unsigned TyInfoSize = TyInfo.size();
- std::vector<unsigned> IdsInFilter(TyInfoSize);
-
- for (unsigned I = 0; I != TyInfoSize; ++I)
+ std::vector<unsigned> IdsInFilter(TyInfo.size());
+ for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
IdsInFilter[I] = getTypeIDFor(TyInfo[I]);
-
LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
}
continue;
}
- for (unsigned j = 0; j != LandingPads[i].BeginLabels.size(); ) {
+ for (unsigned j=0; j != LandingPads[i].BeginLabels.size(); ) {
unsigned BeginLabel = MappedLabel(LandingPad.BeginLabels[j]);
unsigned EndLabel = MappedLabel(LandingPad.EndLabels[j]);
/// getTypeIDFor - Return the type id for the specified typeinfo. This is
/// function wide.
unsigned MachineModuleInfo::getTypeIDFor(GlobalVariable *TI) {
- for (unsigned i = 0, e = TypeInfos.size(); i != e; ++i)
- if (TypeInfos[i] == TI)
- return i + 1;
+ for (unsigned i = 0, N = TypeInfos.size(); i != N; ++i)
+ if (TypeInfos[i] == TI) return i + 1;
TypeInfos.push_back(TI);
return TypeInfos.size();
// Add the new filter.
int FilterID = -(1 + FilterIds.size());
FilterIds.reserve(FilterIds.size() + TyIds.size() + 1);
-
for (unsigned I = 0, N = TyIds.size(); I != N; ++I)
FilterIds.push_back(TyIds[I]);
-
FilterEnds.push_back(FilterIds.size());
FilterIds.push_back(0); // terminator
return FilterID;
const Function* Personality = NULL;
// Scan landing pads. If there is at least one non-NULL personality - use it.
- for (unsigned i = 0, e = LandingPads.size(); i != e; ++i)
+ for (unsigned i = 0; i != LandingPads.size(); ++i)
if (LandingPads[i].Personality) {
Personality = LandingPads[i].Personality;
break;
}
- for (unsigned i = 0, e = Personalities.size(); i < e; ++i)
+ for (unsigned i = 0; i < Personalities.size(); ++i) {
if (Personalities[i] == Personality)
return i;
+ }
// This should never happen
- assert(0 && "Personality function should be set!");
+ LLVM_UNREACHABLE("Personality function should be set!");
return 0;
}
struct DebugLabelFolder : public MachineFunctionPass {
static char ID;
- DebugLabelFolder() : MachineFunctionPass((intptr_t)&ID) {}
+ DebugLabelFolder() : MachineFunctionPass(&ID) {}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.addPreservedID(MachineLoopInfoID);
+ AU.addPreservedID(MachineDominatorsID);
+ MachineFunctionPass::getAnalysisUsage(AU);
+ }
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual const char *getPassName() const { return "Label Folder"; }
bool DebugLabelFolder::runOnMachineFunction(MachineFunction &MF) {
// Get machine module info.
- MachineModuleInfo *MMI = getAnalysisToUpdate<MachineModuleInfo>();
+ MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
if (!MMI) return false;
// Track if change is made.
// Iterate through instructions.
for (MachineBasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ) {
// Is it a label.
- if (I->isDebugLabel()) {
+ if (I->isDebugLabel() && !MMI->isDbgLabelUsed(I->getOperand(0).getImm())){
// The label ID # is always operand #0, an immediate.
unsigned NextLabel = I->getOperand(0).getImm();
FunctionPass *createDebugLabelFoldingPass() { return new DebugLabelFolder(); }
}
+
projects / oota-llvm.git / blobdiff