diff options
Diffstat (limited to 'contrib/llvm/lib/IR/DebugInfo.cpp')
| -rw-r--r-- | contrib/llvm/lib/IR/DebugInfo.cpp | 803 |
1 files changed, 528 insertions, 275 deletions
diff --git a/contrib/llvm/lib/IR/DebugInfo.cpp b/contrib/llvm/lib/IR/DebugInfo.cpp index ec83dca..70a756f 100644 --- a/contrib/llvm/lib/IR/DebugInfo.cpp +++ b/contrib/llvm/lib/IR/DebugInfo.cpp @@ -34,24 +34,6 @@ using namespace llvm::dwarf; // DIDescriptor //===----------------------------------------------------------------------===// -DIDescriptor::DIDescriptor(const DIFile F) : DbgNode(F.DbgNode) { -} - -DIDescriptor::DIDescriptor(const DISubprogram F) : DbgNode(F.DbgNode) { -} - -DIDescriptor::DIDescriptor(const DILexicalBlockFile F) : DbgNode(F.DbgNode) { -} - -DIDescriptor::DIDescriptor(const DILexicalBlock F) : DbgNode(F.DbgNode) { -} - -DIDescriptor::DIDescriptor(const DIVariable F) : DbgNode(F.DbgNode) { -} - -DIDescriptor::DIDescriptor(const DIType F) : DbgNode(F.DbgNode) { -} - bool DIDescriptor::Verify() const { return DbgNode && (DIDerivedType(DbgNode).Verify() || @@ -65,7 +47,7 @@ bool DIDescriptor::Verify() const { DIObjCProperty(DbgNode).Verify() || DITemplateTypeParameter(DbgNode).Verify() || DITemplateValueParameter(DbgNode).Verify() || - DIImportedModule(DbgNode).Verify()); + DIImportedEntity(DbgNode).Verify()); } static Value *getField(const MDNode *DbgNode, unsigned Elt) { @@ -74,10 +56,8 @@ static Value *getField(const MDNode *DbgNode, unsigned Elt) { return DbgNode->getOperand(Elt); } -static const MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) { - if (const MDNode *R = dyn_cast_or_null<MDNode>(getField(DbgNode, Elt))) - return R; - return 0; +static MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) { + return dyn_cast_or_null<MDNode>(getField(DbgNode, Elt)); } static StringRef getStringField(const MDNode *DbgNode, unsigned Elt) { @@ -95,8 +75,8 @@ uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const { return 0; if (Elt < DbgNode->getNumOperands()) - if (ConstantInt *CI - = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt))) + if (ConstantInt *CI = + dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt))) return CI->getZExtValue(); return 0; @@ -107,21 +87,16 @@ int64_t DIDescriptor::getInt64Field(unsigned Elt) const { return 0; if (Elt < DbgNode->getNumOperands()) - if (ConstantInt *CI - = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt))) + if (ConstantInt *CI = + dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt))) return CI->getSExtValue(); return 0; } DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const { - if (DbgNode == 0) - return DIDescriptor(); - - if (Elt < DbgNode->getNumOperands()) - return - DIDescriptor(dyn_cast_or_null<const MDNode>(DbgNode->getOperand(Elt))); - return DIDescriptor(); + MDNode *Field = getNodeField(DbgNode, Elt); + return DIDescriptor(Field); } GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const { @@ -129,7 +104,7 @@ GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const { return 0; if (Elt < DbgNode->getNumOperands()) - return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt)); + return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt)); return 0; } @@ -138,7 +113,7 @@ Constant *DIDescriptor::getConstantField(unsigned Elt) const { return 0; if (Elt < DbgNode->getNumOperands()) - return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt)); + return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt)); return 0; } @@ -147,7 +122,7 @@ Function *DIDescriptor::getFunctionField(unsigned Elt) const { return 0; if (Elt < DbgNode->getNumOperands()) - return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt)); + return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt)); return 0; } @@ -156,19 +131,17 @@ void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) { return; if (Elt < DbgNode->getNumOperands()) { - MDNode *Node = const_cast<MDNode*>(DbgNode); + MDNode *Node = const_cast<MDNode *>(DbgNode); Node->replaceOperandWith(Elt, F); } } unsigned DIVariable::getNumAddrElements() const { - return DbgNode->getNumOperands()-8; + return DbgNode->getNumOperands() - 8; } /// getInlinedAt - If this variable is inlined then return inline location. -MDNode *DIVariable::getInlinedAt() const { - return dyn_cast_or_null<MDNode>(DbgNode->getOperand(7)); -} +MDNode *DIVariable::getInlinedAt() const { return getNodeField(DbgNode, 7); } //===----------------------------------------------------------------------===// // Predicates @@ -177,7 +150,8 @@ MDNode *DIVariable::getInlinedAt() const { /// isBasicType - Return true if the specified tag is legal for /// DIBasicType. bool DIDescriptor::isBasicType() const { - if (!DbgNode) return false; + if (!DbgNode) + return false; switch (getTag()) { case dwarf::DW_TAG_base_type: case dwarf::DW_TAG_unspecified_type: @@ -189,7 +163,8 @@ bool DIDescriptor::isBasicType() const { /// isDerivedType - Return true if the specified tag is legal for DIDerivedType. bool DIDescriptor::isDerivedType() const { - if (!DbgNode) return false; + if (!DbgNode) + return false; switch (getTag()) { case dwarf::DW_TAG_typedef: case dwarf::DW_TAG_pointer_type: @@ -212,7 +187,8 @@ bool DIDescriptor::isDerivedType() const { /// isCompositeType - Return true if the specified tag is legal for /// DICompositeType. bool DIDescriptor::isCompositeType() const { - if (!DbgNode) return false; + if (!DbgNode) + return false; switch (getTag()) { case dwarf::DW_TAG_array_type: case dwarf::DW_TAG_structure_type: @@ -228,7 +204,8 @@ bool DIDescriptor::isCompositeType() const { /// isVariable - Return true if the specified tag is legal for DIVariable. bool DIDescriptor::isVariable() const { - if (!DbgNode) return false; + if (!DbgNode) + return false; switch (getTag()) { case dwarf::DW_TAG_auto_variable: case dwarf::DW_TAG_arg_variable: @@ -256,11 +233,6 @@ bool DIDescriptor::isGlobalVariable() const { getTag() == dwarf::DW_TAG_constant); } -/// isGlobal - Return true if the specified tag is legal for DIGlobal. -bool DIDescriptor::isGlobal() const { - return isGlobalVariable(); -} - /// isUnspecifiedParmeter - Return true if the specified tag is /// DW_TAG_unspecified_parameters. bool DIDescriptor::isUnspecifiedParameter() const { @@ -270,17 +242,19 @@ bool DIDescriptor::isUnspecifiedParameter() const { /// isScope - Return true if the specified tag is one of the scope /// related tag. bool DIDescriptor::isScope() const { - if (!DbgNode) return false; + if (!DbgNode) + return false; switch (getTag()) { case dwarf::DW_TAG_compile_unit: case dwarf::DW_TAG_lexical_block: case dwarf::DW_TAG_subprogram: case dwarf::DW_TAG_namespace: + case dwarf::DW_TAG_file_type: return true; default: break; } - return false; + return isType(); } /// isTemplateTypeParameter - Return true if the specified tag is @@ -292,7 +266,9 @@ bool DIDescriptor::isTemplateTypeParameter() const { /// isTemplateValueParameter - Return true if the specified tag is /// DW_TAG_template_value_parameter. bool DIDescriptor::isTemplateValueParameter() const { - return DbgNode && getTag() == dwarf::DW_TAG_template_value_parameter; + return DbgNode && (getTag() == dwarf::DW_TAG_template_value_parameter || + getTag() == dwarf::DW_TAG_GNU_template_template_param || + getTag() == dwarf::DW_TAG_GNU_template_parameter_pack); } /// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit. @@ -314,13 +290,13 @@ bool DIDescriptor::isNameSpace() const { /// lexical block with an extra file. bool DIDescriptor::isLexicalBlockFile() const { return DbgNode && getTag() == dwarf::DW_TAG_lexical_block && - (DbgNode->getNumOperands() == 3); + (DbgNode->getNumOperands() == 3); } /// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block. bool DIDescriptor::isLexicalBlock() const { return DbgNode && getTag() == dwarf::DW_TAG_lexical_block && - (DbgNode->getNumOperands() > 3); + (DbgNode->getNumOperands() > 3); } /// isSubrange - Return true if the specified tag is DW_TAG_subrange_type. @@ -338,33 +314,28 @@ bool DIDescriptor::isObjCProperty() const { return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property; } -/// \brief Return true if the specified tag is DW_TAG_imported_module. -bool DIDescriptor::isImportedModule() const { - return DbgNode && getTag() == dwarf::DW_TAG_imported_module; +/// \brief Return true if the specified tag is DW_TAG_imported_module or +/// DW_TAG_imported_declaration. +bool DIDescriptor::isImportedEntity() const { + return DbgNode && (getTag() == dwarf::DW_TAG_imported_module || + getTag() == dwarf::DW_TAG_imported_declaration); } //===----------------------------------------------------------------------===// // Simple Descriptor Constructors and other Methods //===----------------------------------------------------------------------===// -DIType::DIType(const MDNode *N) : DIScope(N) { - if (!N) return; - if (!isBasicType() && !isDerivedType() && !isCompositeType()) { - DbgNode = 0; - } -} - unsigned DIArray::getNumElements() const { if (!DbgNode) return 0; return DbgNode->getNumOperands(); } -/// replaceAllUsesWith - Replace all uses of debug info referenced by -/// this descriptor. +/// replaceAllUsesWith - Replace all uses of the MDNode used by this +/// type with the one in the passed descriptor. void DIType::replaceAllUsesWith(DIDescriptor &D) { - if (!DbgNode) - return; + + assert(DbgNode && "Trying to replace an unverified type!"); // Since we use a TrackingVH for the node, its easy for clients to manufacture // legitimate situations where they want to replaceAllUsesWith() on something @@ -372,19 +343,19 @@ void DIType::replaceAllUsesWith(DIDescriptor &D) { // this detail by allowing a value to be replaced with replaceAllUsesWith() // itself. if (DbgNode != D) { - MDNode *Node = const_cast<MDNode*>(DbgNode); + MDNode *Node = const_cast<MDNode *>(DbgNode); const MDNode *DN = D; const Value *V = cast_or_null<Value>(DN); - Node->replaceAllUsesWith(const_cast<Value*>(V)); + Node->replaceAllUsesWith(const_cast<Value *>(V)); MDNode::deleteTemporary(Node); } } -/// replaceAllUsesWith - Replace all uses of debug info referenced by -/// this descriptor. +/// replaceAllUsesWith - Replace all uses of the MDNode used by this +/// type with the one in D. void DIType::replaceAllUsesWith(MDNode *D) { - if (!DbgNode) - return; + + assert(DbgNode && "Trying to replace an unverified type!"); // Since we use a TrackingVH for the node, its easy for clients to manufacture // legitimate situations where they want to replaceAllUsesWith() on something @@ -392,39 +363,24 @@ void DIType::replaceAllUsesWith(MDNode *D) { // this detail by allowing a value to be replaced with replaceAllUsesWith() // itself. if (DbgNode != D) { - MDNode *Node = const_cast<MDNode*>(DbgNode); + MDNode *Node = const_cast<MDNode *>(DbgNode); const MDNode *DN = D; const Value *V = cast_or_null<Value>(DN); - Node->replaceAllUsesWith(const_cast<Value*>(V)); + Node->replaceAllUsesWith(const_cast<Value *>(V)); MDNode::deleteTemporary(Node); } } -/// isUnsignedDIType - Return true if type encoding is unsigned. -bool DIType::isUnsignedDIType() { - DIDerivedType DTy(DbgNode); - if (DTy.Verify()) - return DTy.getTypeDerivedFrom().isUnsignedDIType(); - - DIBasicType BTy(DbgNode); - if (BTy.Verify()) { - unsigned Encoding = BTy.getEncoding(); - if (Encoding == dwarf::DW_ATE_unsigned || - Encoding == dwarf::DW_ATE_unsigned_char || - Encoding == dwarf::DW_ATE_boolean) - return true; - } - return false; -} - /// Verify - Verify that a compile unit is well formed. bool DICompileUnit::Verify() const { if (!isCompileUnit()) return false; - StringRef N = getFilename(); - if (N.empty()) + + // Don't bother verifying the compilation directory or producer string + // as those could be empty. + if (getFilename().empty()) return false; - // It is possible that directory and produce string is empty. + return DbgNode->getNumOperands() == 13; } @@ -433,31 +389,85 @@ bool DIObjCProperty::Verify() const { if (!isObjCProperty()) return false; - DIType Ty = getType(); - if (!Ty.Verify()) return false; - // Don't worry about the rest of the strings for now. return DbgNode->getNumOperands() == 8; } +/// Check if a field at position Elt of a MDNode is a MDNode. +/// We currently allow an empty string and an integer. +/// But we don't allow a non-empty string in a MDNode field. +static bool fieldIsMDNode(const MDNode *DbgNode, unsigned Elt) { + // FIXME: This function should return true, if the field is null or the field + // is indeed a MDNode: return !Fld || isa<MDNode>(Fld). + Value *Fld = getField(DbgNode, Elt); + if (Fld && isa<MDString>(Fld) && !cast<MDString>(Fld)->getString().empty()) + return false; + return true; +} + +/// Check if a field at position Elt of a MDNode is a MDString. +static bool fieldIsMDString(const MDNode *DbgNode, unsigned Elt) { + Value *Fld = getField(DbgNode, Elt); + return !Fld || isa<MDString>(Fld); +} + +/// Check if a value can be a reference to a type. +static bool isTypeRef(const Value *Val) { + return !Val || + (isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) || + (isa<MDNode>(Val) && DIType(cast<MDNode>(Val)).isType()); +} + +/// Check if a field at position Elt of a MDNode can be a reference to a type. +static bool fieldIsTypeRef(const MDNode *DbgNode, unsigned Elt) { + Value *Fld = getField(DbgNode, Elt); + return isTypeRef(Fld); +} + +/// Check if a value can be a ScopeRef. +static bool isScopeRef(const Value *Val) { + return !Val || + (isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) || + (isa<MDNode>(Val) && DIScope(cast<MDNode>(Val)).isScope()); +} + +/// Check if a field at position Elt of a MDNode can be a ScopeRef. +static bool fieldIsScopeRef(const MDNode *DbgNode, unsigned Elt) { + Value *Fld = getField(DbgNode, Elt); + return isScopeRef(Fld); +} + /// Verify - Verify that a type descriptor is well formed. bool DIType::Verify() const { if (!isType()) return false; - if (getContext() && !getContext().Verify()) + // Make sure Context @ field 2 is MDNode. + if (!fieldIsScopeRef(DbgNode, 2)) return false; - unsigned Tag = getTag(); + + // FIXME: Sink this into the various subclass verifies. + uint16_t Tag = getTag(); if (!isBasicType() && Tag != dwarf::DW_TAG_const_type && Tag != dwarf::DW_TAG_volatile_type && Tag != dwarf::DW_TAG_pointer_type && Tag != dwarf::DW_TAG_ptr_to_member_type && Tag != dwarf::DW_TAG_reference_type && Tag != dwarf::DW_TAG_rvalue_reference_type && - Tag != dwarf::DW_TAG_restrict_type && - Tag != dwarf::DW_TAG_array_type && + Tag != dwarf::DW_TAG_restrict_type && Tag != dwarf::DW_TAG_array_type && Tag != dwarf::DW_TAG_enumeration_type && Tag != dwarf::DW_TAG_subroutine_type && + Tag != dwarf::DW_TAG_inheritance && Tag != dwarf::DW_TAG_friend && getFilename().empty()) return false; + // DIType is abstract, it should be a BasicType, a DerivedType or + // a CompositeType. + if (isBasicType()) + DIBasicType(DbgNode).Verify(); + else if (isCompositeType()) + DICompositeType(DbgNode).Verify(); + else if (isDerivedType()) + DIDerivedType(DbgNode).Verify(); + else + return false; return true; } @@ -468,6 +478,14 @@ bool DIBasicType::Verify() const { /// Verify - Verify that a derived type descriptor is well formed. bool DIDerivedType::Verify() const { + // Make sure DerivedFrom @ field 9 is TypeRef. + if (!fieldIsTypeRef(DbgNode, 9)) + return false; + if (getTag() == dwarf::DW_TAG_ptr_to_member_type) + // Make sure ClassType @ field 10 is a TypeRef. + if (!fieldIsTypeRef(DbgNode, 10)) + return false; + return isDerivedType() && DbgNode->getNumOperands() >= 10 && DbgNode->getNumOperands() <= 14; } @@ -476,10 +494,18 @@ bool DIDerivedType::Verify() const { bool DICompositeType::Verify() const { if (!isCompositeType()) return false; - if (getContext() && !getContext().Verify()) + + // Make sure DerivedFrom @ field 9 and ContainingType @ field 12 are TypeRef. + if (!fieldIsTypeRef(DbgNode, 9)) + return false; + if (!fieldIsTypeRef(DbgNode, 12)) + return false; + + // Make sure the type identifier at field 14 is MDString, it can be null. + if (!fieldIsMDString(DbgNode, 14)) return false; - return DbgNode->getNumOperands() >= 10 && DbgNode->getNumOperands() <= 14; + return DbgNode->getNumOperands() == 15; } /// Verify - Verify that a subprogram descriptor is well formed. @@ -487,11 +513,13 @@ bool DISubprogram::Verify() const { if (!isSubprogram()) return false; - if (getContext() && !getContext().Verify()) + // Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode. + if (!fieldIsScopeRef(DbgNode, 2)) return false; - - DICompositeType Ty = getType(); - if (!Ty.Verify()) + if (!fieldIsMDNode(DbgNode, 7)) + return false; + // Containing type @ field 12. + if (!fieldIsTypeRef(DbgNode, 12)) return false; return DbgNode->getNumOperands() == 20; } @@ -503,15 +531,13 @@ bool DIGlobalVariable::Verify() const { if (getDisplayName().empty()) return false; - - if (getContext() && !getContext().Verify()) + // Make sure context @ field 2 and type @ field 8 are MDNodes. + if (!fieldIsMDNode(DbgNode, 2)) return false; - - DIType Ty = getType(); - if (!Ty.Verify()) + if (!fieldIsMDNode(DbgNode, 8)) return false; - - if (!getGlobal() && !getConstant()) + // Make sure StaticDataMemberDeclaration @ field 12 is MDNode. + if (!fieldIsMDNode(DbgNode, 12)) return false; return DbgNode->getNumOperands() == 13; @@ -522,13 +548,11 @@ bool DIVariable::Verify() const { if (!isVariable()) return false; - if (getContext() && !getContext().Verify()) + // Make sure context @ field 1 and type @ field 5 are MDNodes. + if (!fieldIsMDNode(DbgNode, 1)) return false; - - DIType Ty = getType(); - if (!Ty.Verify()) + if (!fieldIsMDNode(DbgNode, 5)) return false; - return DbgNode->getNumOperands() >= 8; } @@ -548,9 +572,7 @@ bool DINameSpace::Verify() const { } /// \brief Retrieve the MDNode for the directory/file pair. -MDNode *DIFile::getFileNode() const { - return const_cast<MDNode*>(getNodeField(DbgNode, 1)); -} +MDNode *DIFile::getFileNode() const { return getNodeField(DbgNode, 1); } /// \brief Verify that the file descriptor is well formed. bool DIFile::Verify() const { @@ -588,62 +610,82 @@ bool DITemplateValueParameter::Verify() const { } /// \brief Verify that the imported module descriptor is well formed. -bool DIImportedModule::Verify() const { - return isImportedModule() && DbgNode->getNumOperands() == 4; +bool DIImportedEntity::Verify() const { + return isImportedEntity() && + (DbgNode->getNumOperands() == 4 || DbgNode->getNumOperands() == 5); } -/// getOriginalTypeSize - If this type is derived from a base type then -/// return base type size. -uint64_t DIDerivedType::getOriginalTypeSize() const { - unsigned Tag = getTag(); - - if (Tag != dwarf::DW_TAG_member && Tag != dwarf::DW_TAG_typedef && - Tag != dwarf::DW_TAG_const_type && Tag != dwarf::DW_TAG_volatile_type && - Tag != dwarf::DW_TAG_restrict_type) - return getSizeInBits(); - - DIType BaseType = getTypeDerivedFrom(); - - // If this type is not derived from any type then take conservative approach. - if (!BaseType.isValid()) - return getSizeInBits(); - - // If this is a derived type, go ahead and get the base type, unless it's a - // reference then it's just the size of the field. Pointer types have no need - // of this since they're a different type of qualification on the type. - if (BaseType.getTag() == dwarf::DW_TAG_reference_type || - BaseType.getTag() == dwarf::DW_TAG_rvalue_reference_type) - return getSizeInBits(); - - if (BaseType.isDerivedType()) - return DIDerivedType(BaseType).getOriginalTypeSize(); +/// getObjCProperty - Return property node, if this ivar is associated with one. +MDNode *DIDerivedType::getObjCProperty() const { + return getNodeField(DbgNode, 10); +} - return BaseType.getSizeInBits(); +MDString *DICompositeType::getIdentifier() const { + return cast_or_null<MDString>(getField(DbgNode, 14)); } -/// getObjCProperty - Return property node, if this ivar is associated with one. -MDNode *DIDerivedType::getObjCProperty() const { - if (DbgNode->getNumOperands() <= 10) - return NULL; - return dyn_cast_or_null<MDNode>(DbgNode->getOperand(10)); +#ifndef NDEBUG +static void VerifySubsetOf(const MDNode *LHS, const MDNode *RHS) { + for (unsigned i = 0; i != LHS->getNumOperands(); ++i) { + // Skip the 'empty' list (that's a single i32 0, rather than truly empty). + if (i == 0 && isa<ConstantInt>(LHS->getOperand(i))) + continue; + const MDNode *E = cast<MDNode>(LHS->getOperand(i)); + bool found = false; + for (unsigned j = 0; !found && j != RHS->getNumOperands(); ++j) + found = E == RHS->getOperand(j); + assert(found && "Losing a member during member list replacement"); + } } +#endif /// \brief Set the array of member DITypes. void DICompositeType::setTypeArray(DIArray Elements, DIArray TParams) { - assert((!TParams || DbgNode->getNumOperands() == 14) && + assert((!TParams || DbgNode->getNumOperands() == 15) && "If you're setting the template parameters this should include a slot " "for that!"); TrackingVH<MDNode> N(*this); - N->replaceOperandWith(10, Elements); + if (Elements) { +#ifndef NDEBUG + // Check that the new list of members contains all the old members as well. + if (const MDNode *El = cast_or_null<MDNode>(N->getOperand(10))) + VerifySubsetOf(El, Elements); +#endif + N->replaceOperandWith(10, Elements); + } if (TParams) N->replaceOperandWith(13, TParams); DbgNode = N; } +void DICompositeType::addMember(DIDescriptor D) { + SmallVector<llvm::Value *, 16> M; + DIArray OrigM = getTypeArray(); + unsigned Elements = OrigM.getNumElements(); + if (Elements == 1 && !OrigM.getElement(0)) + Elements = 0; + M.reserve(Elements + 1); + for (unsigned i = 0; i != Elements; ++i) + M.push_back(OrigM.getElement(i)); + M.push_back(D); + setTypeArray(DIArray(MDNode::get(DbgNode->getContext(), M))); +} + +/// Generate a reference to this DIType. Uses the type identifier instead +/// of the actual MDNode if possible, to help type uniquing. +DIScopeRef DIScope::getRef() const { + if (!isCompositeType()) + return DIScopeRef(*this); + DICompositeType DTy(DbgNode); + if (!DTy.getIdentifier()) + return DIScopeRef(*this); + return DIScopeRef(DTy.getIdentifier()); +} + /// \brief Set the containing type. void DICompositeType::setContainingType(DICompositeType ContainingType) { TrackingVH<MDNode> N(*this); - N->replaceOperandWith(12, ContainingType); + N->replaceOperandWith(12, ContainingType.getRef()); DbgNode = N; } @@ -673,24 +715,59 @@ bool DISubprogram::describes(const Function *F) { } unsigned DISubprogram::isOptimized() const { - assert (DbgNode && "Invalid subprogram descriptor!"); + assert(DbgNode && "Invalid subprogram descriptor!"); if (DbgNode->getNumOperands() == 15) return getUnsignedField(14); return 0; } MDNode *DISubprogram::getVariablesNodes() const { - if (!DbgNode || DbgNode->getNumOperands() <= 18) - return NULL; - return dyn_cast_or_null<MDNode>(DbgNode->getOperand(18)); + return getNodeField(DbgNode, 18); } DIArray DISubprogram::getVariables() const { - if (!DbgNode || DbgNode->getNumOperands() <= 18) - return DIArray(); - if (MDNode *T = dyn_cast_or_null<MDNode>(DbgNode->getOperand(18))) - return DIArray(T); - return DIArray(); + return DIArray(getNodeField(DbgNode, 18)); +} + +Value *DITemplateValueParameter::getValue() const { + return getField(DbgNode, 4); +} + +// If the current node has a parent scope then return that, +// else return an empty scope. +DIScopeRef DIScope::getContext() const { + + if (isType()) + return DIType(DbgNode).getContext(); + + if (isSubprogram()) + return DIScopeRef(DISubprogram(DbgNode).getContext()); + + if (isLexicalBlock()) + return DIScopeRef(DILexicalBlock(DbgNode).getContext()); + + if (isLexicalBlockFile()) + return DIScopeRef(DILexicalBlockFile(DbgNode).getContext()); + + if (isNameSpace()) + return DIScopeRef(DINameSpace(DbgNode).getContext()); + + assert((isFile() || isCompileUnit()) && "Unhandled type of scope."); + return DIScopeRef(NULL); +} + +// If the scope node has a name, return that, else return an empty string. +StringRef DIScope::getName() const { + if (isType()) + return DIType(DbgNode).getName(); + if (isSubprogram()) + return DISubprogram(DbgNode).getName(); + if (isNameSpace()) + return DINameSpace(DbgNode).getName(); + assert((isLexicalBlock() || isLexicalBlockFile() || isFile() || + isCompileUnit()) && + "Unhandled type of scope."); + return StringRef(); } StringRef DIScope::getFilename() const { @@ -709,54 +786,51 @@ DIArray DICompileUnit::getEnumTypes() const { if (!DbgNode || DbgNode->getNumOperands() < 13) return DIArray(); - if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(7))) - return DIArray(N); - return DIArray(); + return DIArray(getNodeField(DbgNode, 7)); } DIArray DICompileUnit::getRetainedTypes() const { if (!DbgNode || DbgNode->getNumOperands() < 13) return DIArray(); - if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(8))) - return DIArray(N); - return DIArray(); + return DIArray(getNodeField(DbgNode, 8)); } DIArray DICompileUnit::getSubprograms() const { if (!DbgNode || DbgNode->getNumOperands() < 13) return DIArray(); - if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(9))) - return DIArray(N); - return DIArray(); + return DIArray(getNodeField(DbgNode, 9)); } - DIArray DICompileUnit::getGlobalVariables() const { if (!DbgNode || DbgNode->getNumOperands() < 13) return DIArray(); - if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(10))) - return DIArray(N); - return DIArray(); + return DIArray(getNodeField(DbgNode, 10)); } -DIArray DICompileUnit::getImportedModules() const { +DIArray DICompileUnit::getImportedEntities() const { if (!DbgNode || DbgNode->getNumOperands() < 13) return DIArray(); - if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(11))) - return DIArray(N); - return DIArray(); + return DIArray(getNodeField(DbgNode, 11)); } -/// fixupObjcLikeName - Replace contains special characters used +/// fixupSubprogramName - Replace contains special characters used /// in a typical Objective-C names with '.' in a given string. -static void fixupObjcLikeName(StringRef Str, SmallVectorImpl<char> &Out) { +static void fixupSubprogramName(DISubprogram Fn, SmallVectorImpl<char> &Out) { + StringRef FName = + Fn.getFunction() ? Fn.getFunction()->getName() : Fn.getName(); + FName = Function::getRealLinkageName(FName); + + StringRef Prefix("llvm.dbg.lv."); + Out.reserve(FName.size() + Prefix.size()); + Out.append(Prefix.begin(), Prefix.end()); + bool isObjCLike = false; - for (size_t i = 0, e = Str.size(); i < e; ++i) { - char C = Str[i]; + for (size_t i = 0, e = FName.size(); i < e; ++i) { + char C = FName[i]; if (C == '[') isObjCLike = true; @@ -771,33 +845,16 @@ static void fixupObjcLikeName(StringRef Str, SmallVectorImpl<char> &Out) { /// getFnSpecificMDNode - Return a NameMDNode, if available, that is /// suitable to hold function specific information. NamedMDNode *llvm::getFnSpecificMDNode(const Module &M, DISubprogram Fn) { - SmallString<32> Name = StringRef("llvm.dbg.lv."); - StringRef FName = "fn"; - if (Fn.getFunction()) - FName = Fn.getFunction()->getName(); - else - FName = Fn.getName(); - char One = '\1'; - if (FName.startswith(StringRef(&One, 1))) - FName = FName.substr(1); - fixupObjcLikeName(FName, Name); + SmallString<32> Name; + fixupSubprogramName(Fn, Name); return M.getNamedMetadata(Name.str()); } /// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable /// to hold function specific information. NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) { - SmallString<32> Name = StringRef("llvm.dbg.lv."); - StringRef FName = "fn"; - if (Fn.getFunction()) - FName = Fn.getFunction()->getName(); - else - FName = Fn.getName(); - char One = '\1'; - if (FName.startswith(StringRef(&One, 1))) - FName = FName.substr(1); - fixupObjcLikeName(FName, Name); - + SmallString<32> Name; + fixupSubprogramName(Fn, Name); return M.getOrInsertNamedMetadata(Name.str()); } @@ -810,8 +867,7 @@ DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope, SmallVector<Value *, 16> Elts; // Insert inlined scope as 7th element. for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i) - i == 7 ? Elts.push_back(InlinedScope) : - Elts.push_back(DV->getOperand(i)); + i == 7 ? Elts.push_back(InlinedScope) : Elts.push_back(DV->getOperand(i)); return DIVariable(MDNode::get(VMContext, Elts)); } @@ -820,9 +876,8 @@ DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) { SmallVector<Value *, 16> Elts; // Insert inlined scope as 7th element. for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i) - i == 7 ? - Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext))): - Elts.push_back(DV->getOperand(i)); + i == 7 ? Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext))) + : Elts.push_back(DV->getOperand(i)); return DIVariable(MDNode::get(VMContext, Elts)); } @@ -846,31 +901,70 @@ DICompositeType llvm::getDICompositeType(DIType T) { if (T.isCompositeType()) return DICompositeType(T); - if (T.isDerivedType()) - return getDICompositeType(DIDerivedType(T).getTypeDerivedFrom()); + if (T.isDerivedType()) { + // This function is currently used by dragonegg and dragonegg does + // not generate identifier for types, so using an empty map to resolve + // DerivedFrom should be fine. + DITypeIdentifierMap EmptyMap; + return getDICompositeType( + DIDerivedType(T).getTypeDerivedFrom().resolve(EmptyMap)); + } return DICompositeType(); } -/// isSubprogramContext - Return true if Context is either a subprogram -/// or another context nested inside a subprogram. -bool llvm::isSubprogramContext(const MDNode *Context) { - if (!Context) - return false; - DIDescriptor D(Context); - if (D.isSubprogram()) - return true; - if (D.isType()) - return isSubprogramContext(DIType(Context).getContext()); - return false; +/// Update DITypeIdentifierMap by going through retained types of each CU. +DITypeIdentifierMap +llvm::generateDITypeIdentifierMap(const NamedMDNode *CU_Nodes) { + DITypeIdentifierMap Map; + for (unsigned CUi = 0, CUe = CU_Nodes->getNumOperands(); CUi != CUe; ++CUi) { + DICompileUnit CU(CU_Nodes->getOperand(CUi)); + DIArray Retain = CU.getRetainedTypes(); + for (unsigned Ti = 0, Te = Retain.getNumElements(); Ti != Te; ++Ti) { + if (!Retain.getElement(Ti).isCompositeType()) + continue; + DICompositeType Ty(Retain.getElement(Ti)); + if (MDString *TypeId = Ty.getIdentifier()) { + // Definition has priority over declaration. + // Try to insert (TypeId, Ty) to Map. + std::pair<DITypeIdentifierMap::iterator, bool> P = + Map.insert(std::make_pair(TypeId, Ty)); + // If TypeId already exists in Map and this is a definition, replace + // whatever we had (declaration or definition) with the definition. + if (!P.second && !Ty.isForwardDecl()) + P.first->second = Ty; + } + } + } + return Map; } //===----------------------------------------------------------------------===// // DebugInfoFinder implementations. //===----------------------------------------------------------------------===// +void DebugInfoFinder::reset() { + CUs.clear(); + SPs.clear(); + GVs.clear(); + TYs.clear(); + Scopes.clear(); + NodesSeen.clear(); + TypeIdentifierMap.clear(); + TypeMapInitialized = false; +} + +void DebugInfoFinder::InitializeTypeMap(const Module &M) { + if (!TypeMapInitialized) + if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) { + TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes); + TypeMapInitialized = true; + } +} + /// processModule - Process entire module and collect debug info. void DebugInfoFinder::processModule(const Module &M) { + InitializeTypeMap(M); if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) { for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) { DICompileUnit CU(CU_Nodes->getOperand(i)); @@ -878,8 +972,10 @@ void DebugInfoFinder::processModule(const Module &M) { DIArray GVs = CU.getGlobalVariables(); for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) { DIGlobalVariable DIG(GVs.getElement(i)); - if (addGlobalVariable(DIG)) + if (addGlobalVariable(DIG)) { + processScope(DIG.getContext()); processType(DIG.getType()); + } } DIArray SPs = CU.getSubprograms(); for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) @@ -890,36 +986,38 @@ void DebugInfoFinder::processModule(const Module &M) { DIArray RetainedTypes = CU.getRetainedTypes(); for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i) processType(DIType(RetainedTypes.getElement(i))); - // FIXME: We really shouldn't be bailing out after visiting just one CU - return; + DIArray Imports = CU.getImportedEntities(); + for (unsigned i = 0, e = Imports.getNumElements(); i != e; ++i) { + DIImportedEntity Import = DIImportedEntity(Imports.getElement(i)); + DIDescriptor Entity = Import.getEntity(); + if (Entity.isType()) + processType(DIType(Entity)); + else if (Entity.isSubprogram()) + processSubprogram(DISubprogram(Entity)); + else if (Entity.isNameSpace()) + processScope(DINameSpace(Entity).getContext()); + } } } } /// processLocation - Process DILocation. -void DebugInfoFinder::processLocation(DILocation Loc) { - if (!Loc.Verify()) return; - DIDescriptor S(Loc.getScope()); - if (S.isCompileUnit()) - addCompileUnit(DICompileUnit(S)); - else if (S.isSubprogram()) - processSubprogram(DISubprogram(S)); - else if (S.isLexicalBlock()) - processLexicalBlock(DILexicalBlock(S)); - else if (S.isLexicalBlockFile()) { - DILexicalBlockFile DBF = DILexicalBlockFile(S); - processLexicalBlock(DILexicalBlock(DBF.getScope())); - } - processLocation(Loc.getOrigLocation()); +void DebugInfoFinder::processLocation(const Module &M, DILocation Loc) { + if (!Loc) + return; + InitializeTypeMap(M); + processScope(Loc.getScope()); + processLocation(M, Loc.getOrigLocation()); } /// processType - Process DIType. void DebugInfoFinder::processType(DIType DT) { if (!addType(DT)) return; + processScope(DT.getContext().resolve(TypeIdentifierMap)); if (DT.isCompositeType()) { DICompositeType DCT(DT); - processType(DCT.getTypeDerivedFrom()); + processType(DCT.getTypeDerivedFrom().resolve(TypeIdentifierMap)); DIArray DA = DCT.getTypeArray(); for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) { DIDescriptor D = DA.getElement(i); @@ -930,7 +1028,35 @@ void DebugInfoFinder::processType(DIType DT) { } } else if (DT.isDerivedType()) { DIDerivedType DDT(DT); - processType(DDT.getTypeDerivedFrom()); + processType(DDT.getTypeDerivedFrom().resolve(TypeIdentifierMap)); + } +} + +void DebugInfoFinder::processScope(DIScope Scope) { + if (Scope.isType()) { + DIType Ty(Scope); + processType(Ty); + return; + } + if (Scope.isCompileUnit()) { + addCompileUnit(DICompileUnit(Scope)); + return; + } + if (Scope.isSubprogram()) { + processSubprogram(DISubprogram(Scope)); + return; + } + if (!addScope(Scope)) + return; + if (Scope.isLexicalBlock()) { + DILexicalBlock LB(Scope); + processScope(LB.getContext()); + } else if (Scope.isLexicalBlockFile()) { + DILexicalBlockFile LBF = DILexicalBlockFile(Scope); + processScope(LBF.getScope()); + } else if (Scope.isNameSpace()) { + DINameSpace NS(Scope); + processScope(NS.getContext()); } } @@ -942,8 +1068,7 @@ void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) { else if (Context.isLexicalBlockFile()) { DILexicalBlockFile DBF = DILexicalBlockFile(Context); return processLexicalBlock(DILexicalBlock(DBF.getScope())); - } - else + } else return processSubprogram(DISubprogram(Context)); } @@ -951,13 +1076,30 @@ void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) { void DebugInfoFinder::processSubprogram(DISubprogram SP) { if (!addSubprogram(SP)) return; + processScope(SP.getContext().resolve(TypeIdentifierMap)); processType(SP.getType()); + DIArray TParams = SP.getTemplateParams(); + for (unsigned I = 0, E = TParams.getNumElements(); I != E; ++I) { + DIDescriptor Element = TParams.getElement(I); + if (Element.isTemplateTypeParameter()) { + DITemplateTypeParameter TType(Element); + processScope(TType.getContext().resolve(TypeIdentifierMap)); + processType(TType.getType().resolve(TypeIdentifierMap)); + } else if (Element.isTemplateValueParameter()) { + DITemplateValueParameter TVal(Element); + processScope(TVal.getContext().resolve(TypeIdentifierMap)); + processType(TVal.getType().resolve(TypeIdentifierMap)); + } + } } /// processDeclare - Process DbgDeclareInst. -void DebugInfoFinder::processDeclare(const DbgDeclareInst *DDI) { +void DebugInfoFinder::processDeclare(const Module &M, + const DbgDeclareInst *DDI) { MDNode *N = dyn_cast<MDNode>(DDI->getVariable()); - if (!N) return; + if (!N) + return; + InitializeTypeMap(M); DIDescriptor DV(N); if (!DV.isVariable()) @@ -965,12 +1107,29 @@ void DebugInfoFinder::processDeclare(const DbgDeclareInst *DDI) { if (!NodesSeen.insert(DV)) return; + processScope(DIVariable(N).getContext()); + processType(DIVariable(N).getType()); +} + +void DebugInfoFinder::processValue(const Module &M, const DbgValueInst *DVI) { + MDNode *N = dyn_cast<MDNode>(DVI->getVariable()); + if (!N) + return; + InitializeTypeMap(M); + + DIDescriptor DV(N); + if (!DV.isVariable()) + return; + + if (!NodesSeen.insert(DV)) + return; + processScope(DIVariable(N).getContext()); processType(DIVariable(N).getType()); } /// addType - Add type into Tys. bool DebugInfoFinder::addType(DIType DT) { - if (!DT.isValid()) + if (!DT) return false; if (!NodesSeen.insert(DT)) @@ -982,9 +1141,8 @@ bool DebugInfoFinder::addType(DIType DT) { /// addCompileUnit - Add compile unit into CUs. bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) { - if (!CU.Verify()) + if (!CU) return false; - if (!NodesSeen.insert(CU)) return false; @@ -994,7 +1152,7 @@ bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) { /// addGlobalVariable - Add global variable into GVs. bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) { - if (!DIDescriptor(DIG).isGlobalVariable()) + if (!DIG) return false; if (!NodesSeen.insert(DIG)) @@ -1006,7 +1164,7 @@ bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) { // addSubprogram - Add subprgoram into SPs. bool DebugInfoFinder::addSubprogram(DISubprogram SP) { - if (!DIDescriptor(SP).isSubprogram()) + if (!SP) return false; if (!NodesSeen.insert(SP)) @@ -1016,18 +1174,33 @@ bool DebugInfoFinder::addSubprogram(DISubprogram SP) { return true; } +bool DebugInfoFinder::addScope(DIScope Scope) { + if (!Scope) + return false; + // FIXME: Ocaml binding generates a scope with no content, we treat it + // as null for now. + if (Scope->getNumOperands() == 0) + return false; + if (!NodesSeen.insert(Scope)) + return false; + Scopes.push_back(Scope); + return true; +} + //===----------------------------------------------------------------------===// // DIDescriptor: dump routines for all descriptors. //===----------------------------------------------------------------------===// /// dump - Print descriptor to dbgs() with a newline. void DIDescriptor::dump() const { - print(dbgs()); dbgs() << '\n'; + print(dbgs()); + dbgs() << '\n'; } /// print - Print descriptor. void DIDescriptor::print(raw_ostream &OS) const { - if (!DbgNode) return; + if (!DbgNode) + return; if (const char *Tag = dwarf::TagString(getTag())) OS << "[ " << Tag << " ]"; @@ -1089,7 +1262,8 @@ void DIEnumerator::printInternal(raw_ostream &OS) const { } void DIType::printInternal(raw_ostream &OS) const { - if (!DbgNode) return; + if (!DbgNode) + return; StringRef Res = getName(); if (!Res.empty()) @@ -1097,13 +1271,11 @@ void DIType::printInternal(raw_ostream &OS) const { // TODO: Print context? - OS << " [line " << getLineNumber() - << ", size " << getSizeInBits() - << ", align " << getAlignInBits() - << ", offset " << getOffsetInBits(); + OS << " [line " << getLineNumber() << ", size " << getSizeInBits() + << ", align " << getAlignInBits() << ", offset " << getOffsetInBits(); if (isBasicType()) if (const char *Enc = - dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding())) + dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding())) OS << ", enc " << Enc; OS << "]"; @@ -1116,7 +1288,12 @@ void DIType::printInternal(raw_ostream &OS) const { OS << " [artificial]"; if (isForwardDecl()) - OS << " [fwd]"; + OS << " [decl]"; + else if (getTag() == dwarf::DW_TAG_structure_type || + getTag() == dwarf::DW_TAG_union_type || + getTag() == dwarf::DW_TAG_enumeration_type || + getTag() == dwarf::DW_TAG_class_type) + OS << " [def]"; if (isVector()) OS << " [vector]"; if (isStaticMember()) @@ -1194,19 +1371,17 @@ void DIObjCProperty::printInternal(raw_ostream &OS) const { if (!Name.empty()) OS << " [" << Name << ']'; - OS << " [line " << getLineNumber() - << ", properties " << getUnsignedField(6) << ']'; + OS << " [line " << getLineNumber() << ", properties " << getUnsignedField(6) + << ']'; } static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS, const LLVMContext &Ctx) { - if (!DL.isUnknown()) { // Print source line info. + if (!DL.isUnknown()) { // Print source line info. DIScope Scope(DL.getScope(Ctx)); + assert(Scope.isScope() && "Scope of a DebugLoc should be a DIScope."); // Omit the directory, because it's likely to be long and uninteresting. - if (Scope.Verify()) - CommentOS << Scope.getFilename(); - else - CommentOS << "<unknown>"; + CommentOS << Scope.getFilename(); CommentOS << ':' << DL.getLine(); if (DL.getCol() != 0) CommentOS << ':' << DL.getCol(); @@ -1233,3 +1408,81 @@ void DIVariable::printExtendedName(raw_ostream &OS) const { } } } + +/// Specialize constructor to make sure it has the correct type. +template <> DIRef<DIScope>::DIRef(const Value *V) : Val(V) { + assert(isScopeRef(V) && "DIScopeRef should be a MDString or MDNode"); +} +template <> DIRef<DIType>::DIRef(const Value *V) : Val(V) { + assert(isTypeRef(V) && "DITypeRef should be a MDString or MDNode"); +} + +/// Specialize getFieldAs to handle fields that are references to DIScopes. +template <> +DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const { + return DIScopeRef(getField(DbgNode, Elt)); +} +/// Specialize getFieldAs to handle fields that are references to DITypes. +template <> DITypeRef DIDescriptor::getFieldAs<DITypeRef>(unsigned Elt) const { + return DITypeRef(getField(DbgNode, Elt)); +} + +/// Strip debug info in the module if it exists. +/// To do this, we remove all calls to the debugger intrinsics and any named +/// metadata for debugging. We also remove debug locations for instructions. +/// Return true if module is modified. +bool llvm::StripDebugInfo(Module &M) { + + bool Changed = false; + + // Remove all of the calls to the debugger intrinsics, and remove them from + // the module. + if (Function *Declare = M.getFunction("llvm.dbg.declare")) { + while (!Declare->use_empty()) { + CallInst *CI = cast<CallInst>(Declare->use_back()); + CI->eraseFromParent(); + } + Declare->eraseFromParent(); + Changed = true; + } + + if (Function *DbgVal = M.getFunction("llvm.dbg.value")) { + while (!DbgVal->use_empty()) { + CallInst *CI = cast<CallInst>(DbgVal->use_back()); + CI->eraseFromParent(); + } + DbgVal->eraseFromParent(); + Changed = true; + } + + for (Module::named_metadata_iterator NMI = M.named_metadata_begin(), + NME = M.named_metadata_end(); NMI != NME;) { + NamedMDNode *NMD = NMI; + ++NMI; + if (NMD->getName().startswith("llvm.dbg.")) { + NMD->eraseFromParent(); + Changed = true; + } + } + + for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI) + for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE; + ++FI) + for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE; + ++BI) { + if (!BI->getDebugLoc().isUnknown()) { + Changed = true; + BI->setDebugLoc(DebugLoc()); + } + } + + return Changed; +} + +/// Return Debug Info Metadata Version by checking module flags. +unsigned llvm::getDebugMetadataVersionFromModule(const Module &M) { + Value *Val = M.getModuleFlag("Debug Info Version"); + if (!Val) + return 0; + return cast<ConstantInt>(Val)->getZExtValue(); +} |
