[llvm] r192879 - Changing DebugInfoFinder to iterate over all the compile units.
Michael Kuperstein
michael.m.kuperstein at intel.com
Thu Oct 17 03:27:12 PDT 2013
Author: mkuper
Date: Thu Oct 17 05:27:12 2013
New Revision: 192879
URL: http://llvm.org/viewvc/llvm-project?rev=192879&view=rev
Log:
Changing DebugInfoFinder to iterate over all the compile units.
Solves http://llvm.org/bugs/show_bug.cgi?id=17507
Committed on behalf of alon.mishne at intel.com
Added:
llvm/trunk/test/DebugInfo/debuginfofinder-multiple-cu.ll
Modified:
llvm/trunk/lib/IR/DebugInfo.cpp
Modified: llvm/trunk/lib/IR/DebugInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/DebugInfo.cpp?rev=192879&r1=192878&r2=192879&view=diff
==============================================================================
--- llvm/trunk/lib/IR/DebugInfo.cpp (original)
+++ llvm/trunk/lib/IR/DebugInfo.cpp Thu Oct 17 05:27:12 2013
@@ -1,1421 +1,1419 @@
-//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the helper classes used to build and interpret debug
-// information in LLVM IR form.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/IntrinsicInst.h"
-#include "llvm/IR/Intrinsics.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/Dwarf.h"
-#include "llvm/Support/ValueHandle.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-using namespace llvm::dwarf;
-
-//===----------------------------------------------------------------------===//
-// DIDescriptor
-//===----------------------------------------------------------------------===//
-
-bool DIDescriptor::Verify() const {
- return DbgNode &&
- (DIDerivedType(DbgNode).Verify() ||
- DICompositeType(DbgNode).Verify() || DIBasicType(DbgNode).Verify() ||
- DIVariable(DbgNode).Verify() || DISubprogram(DbgNode).Verify() ||
- DIGlobalVariable(DbgNode).Verify() || DIFile(DbgNode).Verify() ||
- DICompileUnit(DbgNode).Verify() || DINameSpace(DbgNode).Verify() ||
- DILexicalBlock(DbgNode).Verify() ||
- DILexicalBlockFile(DbgNode).Verify() ||
- DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
- DIObjCProperty(DbgNode).Verify() ||
- DITemplateTypeParameter(DbgNode).Verify() ||
- DITemplateValueParameter(DbgNode).Verify() ||
- DIImportedEntity(DbgNode).Verify());
-}
-
-static Value *getField(const MDNode *DbgNode, unsigned Elt) {
- if (DbgNode == 0 || Elt >= DbgNode->getNumOperands())
- return 0;
- return DbgNode->getOperand(Elt);
-}
-
-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) {
- if (MDString *MDS = dyn_cast_or_null<MDString>(getField(DbgNode, Elt)))
- return MDS->getString();
- return StringRef();
-}
-
-StringRef DIDescriptor::getStringField(unsigned Elt) const {
- return ::getStringField(DbgNode, Elt);
-}
-
-uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
-
- if (Elt < DbgNode->getNumOperands())
- if (ConstantInt *CI
- = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
- return CI->getZExtValue();
-
- return 0;
-}
-
-int64_t DIDescriptor::getInt64Field(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
-
- if (Elt < DbgNode->getNumOperands())
- if (ConstantInt *CI
- = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
- return CI->getSExtValue();
-
- return 0;
-}
-
-DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
- MDNode *Field = getNodeField(DbgNode, Elt);
- return DIDescriptor(Field);
-}
-
-GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
-
- if (Elt < DbgNode->getNumOperands())
- return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
- return 0;
-}
-
-Constant *DIDescriptor::getConstantField(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
-
- if (Elt < DbgNode->getNumOperands())
- return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
- return 0;
-}
-
-Function *DIDescriptor::getFunctionField(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
-
- if (Elt < DbgNode->getNumOperands())
- return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
- return 0;
-}
-
-void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
- if (DbgNode == 0)
- return;
-
- if (Elt < DbgNode->getNumOperands()) {
- MDNode *Node = const_cast<MDNode*>(DbgNode);
- Node->replaceOperandWith(Elt, F);
- }
-}
-
-unsigned DIVariable::getNumAddrElements() const {
- return DbgNode->getNumOperands()-8;
-}
-
-/// getInlinedAt - If this variable is inlined then return inline location.
-MDNode *DIVariable::getInlinedAt() const {
- return getNodeField(DbgNode, 7);
-}
-
-//===----------------------------------------------------------------------===//
-// Predicates
-//===----------------------------------------------------------------------===//
-
-/// isBasicType - Return true if the specified tag is legal for
-/// DIBasicType.
-bool DIDescriptor::isBasicType() const {
- if (!DbgNode) return false;
- switch (getTag()) {
- case dwarf::DW_TAG_base_type:
- case dwarf::DW_TAG_unspecified_type:
- return true;
- default:
- return false;
- }
-}
-
-/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
-bool DIDescriptor::isDerivedType() const {
- if (!DbgNode) return false;
- switch (getTag()) {
- case dwarf::DW_TAG_typedef:
- case dwarf::DW_TAG_pointer_type:
- case dwarf::DW_TAG_ptr_to_member_type:
- case dwarf::DW_TAG_reference_type:
- case dwarf::DW_TAG_rvalue_reference_type:
- case dwarf::DW_TAG_const_type:
- case dwarf::DW_TAG_volatile_type:
- case dwarf::DW_TAG_restrict_type:
- case dwarf::DW_TAG_member:
- case dwarf::DW_TAG_inheritance:
- case dwarf::DW_TAG_friend:
- return true;
- default:
- // CompositeTypes are currently modelled as DerivedTypes.
- return isCompositeType();
- }
-}
-
-/// isCompositeType - Return true if the specified tag is legal for
-/// DICompositeType.
-bool DIDescriptor::isCompositeType() const {
- if (!DbgNode) return false;
- switch (getTag()) {
- case dwarf::DW_TAG_array_type:
- case dwarf::DW_TAG_structure_type:
- case dwarf::DW_TAG_union_type:
- case dwarf::DW_TAG_enumeration_type:
- case dwarf::DW_TAG_subroutine_type:
- case dwarf::DW_TAG_class_type:
- return true;
- default:
- return false;
- }
-}
-
-/// isVariable - Return true if the specified tag is legal for DIVariable.
-bool DIDescriptor::isVariable() const {
- if (!DbgNode) return false;
- switch (getTag()) {
- case dwarf::DW_TAG_auto_variable:
- case dwarf::DW_TAG_arg_variable:
- return true;
- default:
- return false;
- }
-}
-
-/// isType - Return true if the specified tag is legal for DIType.
-bool DIDescriptor::isType() const {
- return isBasicType() || isCompositeType() || isDerivedType();
-}
-
-/// isSubprogram - Return true if the specified tag is legal for
-/// DISubprogram.
-bool DIDescriptor::isSubprogram() const {
- return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
-}
-
-/// isGlobalVariable - Return true if the specified tag is legal for
-/// DIGlobalVariable.
-bool DIDescriptor::isGlobalVariable() const {
- return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
- getTag() == dwarf::DW_TAG_constant);
-}
-
-/// isUnspecifiedParmeter - Return true if the specified tag is
-/// DW_TAG_unspecified_parameters.
-bool DIDescriptor::isUnspecifiedParameter() const {
- return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
-}
-
-/// isScope - Return true if the specified tag is one of the scope
-/// related tag.
-bool DIDescriptor::isScope() const {
- 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 isType();
-}
-
-/// isTemplateTypeParameter - Return true if the specified tag is
-/// DW_TAG_template_type_parameter.
-bool DIDescriptor::isTemplateTypeParameter() const {
- return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
-}
-
-/// 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 ||
- 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.
-bool DIDescriptor::isCompileUnit() const {
- return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
-}
-
-/// isFile - Return true if the specified tag is DW_TAG_file_type.
-bool DIDescriptor::isFile() const {
- return DbgNode && getTag() == dwarf::DW_TAG_file_type;
-}
-
-/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
-bool DIDescriptor::isNameSpace() const {
- return DbgNode && getTag() == dwarf::DW_TAG_namespace;
-}
-
-/// isLexicalBlockFile - Return true if the specified descriptor is a
-/// lexical block with an extra file.
-bool DIDescriptor::isLexicalBlockFile() const {
- return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
- (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);
-}
-
-/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
-bool DIDescriptor::isSubrange() const {
- return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
-}
-
-/// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
-bool DIDescriptor::isEnumerator() const {
- return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
-}
-
-/// isObjCProperty - Return true if the specified tag is DW_TAG_APPLE_property.
-bool DIDescriptor::isObjCProperty() const {
- return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
-}
-
-/// \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
-//===----------------------------------------------------------------------===//
-
-unsigned DIArray::getNumElements() const {
- if (!DbgNode)
- return 0;
- return DbgNode->getNumOperands();
-}
-
-/// replaceAllUsesWith - Replace all uses of the MDNode used by this
-/// type with the one in the passed descriptor.
-void DIType::replaceAllUsesWith(DIDescriptor &D) {
-
- 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
- // which, due to uniquing, has merged with the source. We shield clients from
- // this detail by allowing a value to be replaced with replaceAllUsesWith()
- // itself.
- if (DbgNode != D) {
- MDNode *Node = const_cast<MDNode*>(DbgNode);
- const MDNode *DN = D;
- const Value *V = cast_or_null<Value>(DN);
- Node->replaceAllUsesWith(const_cast<Value*>(V));
- MDNode::deleteTemporary(Node);
- }
-}
-
-/// replaceAllUsesWith - Replace all uses of the MDNode used by this
-/// type with the one in D.
-void DIType::replaceAllUsesWith(MDNode *D) {
-
- 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
- // which, due to uniquing, has merged with the source. We shield clients from
- // this detail by allowing a value to be replaced with replaceAllUsesWith()
- // itself.
- if (DbgNode != D) {
- MDNode *Node = const_cast<MDNode*>(DbgNode);
- const MDNode *DN = D;
- const Value *V = cast_or_null<Value>(DN);
- Node->replaceAllUsesWith(const_cast<Value*>(V));
- MDNode::deleteTemporary(Node);
- }
-}
-
-/// Verify - Verify that a compile unit is well formed.
-bool DICompileUnit::Verify() const {
- if (!isCompileUnit())
- return false;
-
- // Don't bother verifying the compilation directory or producer string
- // as those could be empty.
- if (getFilename().empty())
- return false;
-
- return DbgNode->getNumOperands() == 13;
-}
-
-/// Verify - Verify that an ObjC property is well formed.
-bool DIObjCProperty::Verify() const {
- if (!isObjCProperty())
- 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;
- // Make sure Context @ field 2 is MDNode.
- if (!fieldIsScopeRef(DbgNode, 2))
- return false;
-
- // 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_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;
-}
-
-/// Verify - Verify that a basic type descriptor is well formed.
-bool DIBasicType::Verify() const {
- return isBasicType() && DbgNode->getNumOperands() == 10;
-}
-
-/// 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;
-}
-
-/// Verify - Verify that a composite type descriptor is well formed.
-bool DICompositeType::Verify() const {
- if (!isCompositeType())
- return false;
-
- // 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() == 15;
-}
-
-/// Verify - Verify that a subprogram descriptor is well formed.
-bool DISubprogram::Verify() const {
- if (!isSubprogram())
- return false;
-
- // Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode.
- if (!fieldIsScopeRef(DbgNode, 2))
- return false;
- if (!fieldIsMDNode(DbgNode, 7))
- return false;
- // Containing type @ field 12.
- if (!fieldIsTypeRef(DbgNode, 12))
- return false;
- return DbgNode->getNumOperands() == 20;
-}
-
-/// Verify - Verify that a global variable descriptor is well formed.
-bool DIGlobalVariable::Verify() const {
- if (!isGlobalVariable())
- return false;
-
- if (getDisplayName().empty())
- return false;
- // Make sure context @ field 2 and type @ field 8 are MDNodes.
- if (!fieldIsMDNode(DbgNode, 2))
- return false;
- if (!fieldIsMDNode(DbgNode, 8))
- return false;
- // Make sure StaticDataMemberDeclaration @ field 12 is MDNode.
- if (!fieldIsMDNode(DbgNode, 12))
- return false;
-
- return DbgNode->getNumOperands() == 13;
-}
-
-/// Verify - Verify that a variable descriptor is well formed.
-bool DIVariable::Verify() const {
- if (!isVariable())
- return false;
-
- // Make sure context @ field 1 and type @ field 5 are MDNodes.
- if (!fieldIsMDNode(DbgNode, 1))
- return false;
- if (!fieldIsMDNode(DbgNode, 5))
- return false;
- return DbgNode->getNumOperands() >= 8;
-}
-
-/// Verify - Verify that a location descriptor is well formed.
-bool DILocation::Verify() const {
- if (!DbgNode)
- return false;
-
- return DbgNode->getNumOperands() == 4;
-}
-
-/// Verify - Verify that a namespace descriptor is well formed.
-bool DINameSpace::Verify() const {
- if (!isNameSpace())
- return false;
- return DbgNode->getNumOperands() == 5;
-}
-
-/// \brief Retrieve the MDNode for the directory/file pair.
-MDNode *DIFile::getFileNode() const {
- return getNodeField(DbgNode, 1);
-}
-
-/// \brief Verify that the file descriptor is well formed.
-bool DIFile::Verify() const {
- return isFile() && DbgNode->getNumOperands() == 2;
-}
-
-/// \brief Verify that the enumerator descriptor is well formed.
-bool DIEnumerator::Verify() const {
- return isEnumerator() && DbgNode->getNumOperands() == 3;
-}
-
-/// \brief Verify that the subrange descriptor is well formed.
-bool DISubrange::Verify() const {
- return isSubrange() && DbgNode->getNumOperands() == 3;
-}
-
-/// \brief Verify that the lexical block descriptor is well formed.
-bool DILexicalBlock::Verify() const {
- return isLexicalBlock() && DbgNode->getNumOperands() == 6;
-}
-
-/// \brief Verify that the file-scoped lexical block descriptor is well formed.
-bool DILexicalBlockFile::Verify() const {
- return isLexicalBlockFile() && DbgNode->getNumOperands() == 3;
-}
-
-/// \brief Verify that the template type parameter descriptor is well formed.
-bool DITemplateTypeParameter::Verify() const {
- return isTemplateTypeParameter() && DbgNode->getNumOperands() == 7;
-}
-
-/// \brief Verify that the template value parameter descriptor is well formed.
-bool DITemplateValueParameter::Verify() const {
- return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
-}
-
-/// \brief Verify that the imported module descriptor is well formed.
-bool DIImportedEntity::Verify() const {
- return isImportedEntity() &&
- (DbgNode->getNumOperands() == 4 || DbgNode->getNumOperands() == 5);
-}
-
-/// getObjCProperty - Return property node, if this ivar is associated with one.
-MDNode *DIDerivedType::getObjCProperty() const {
- return getNodeField(DbgNode, 10);
-}
-
-MDString *DICompositeType::getIdentifier() const {
- return cast_or_null<MDString>(getField(DbgNode, 14));
-}
-
-#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() == 15) &&
- "If you're setting the template parameters this should include a slot "
- "for that!");
- TrackingVH<MDNode> N(*this);
- 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.getRef());
- DbgNode = N;
-}
-
-/// isInlinedFnArgument - Return true if this variable provides debugging
-/// information for an inlined function arguments.
-bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
- assert(CurFn && "Invalid function");
- if (!getContext().isSubprogram())
- return false;
- // This variable is not inlined function argument if its scope
- // does not describe current function.
- return !DISubprogram(getContext()).describes(CurFn);
-}
-
-/// describes - Return true if this subprogram provides debugging
-/// information for the function F.
-bool DISubprogram::describes(const Function *F) {
- assert(F && "Invalid function");
- if (F == getFunction())
- return true;
- StringRef Name = getLinkageName();
- if (Name.empty())
- Name = getName();
- if (F->getName() == Name)
- return true;
- return false;
-}
-
-unsigned DISubprogram::isOptimized() const {
- assert (DbgNode && "Invalid subprogram descriptor!");
- if (DbgNode->getNumOperands() == 15)
- return getUnsignedField(14);
- return 0;
-}
-
-MDNode *DISubprogram::getVariablesNodes() const {
- return getNodeField(DbgNode, 18);
-}
-
-DIArray DISubprogram::getVariables() const {
- 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 {
- if (!DbgNode)
- return StringRef();
- return ::getStringField(getNodeField(DbgNode, 1), 0);
-}
-
-StringRef DIScope::getDirectory() const {
- if (!DbgNode)
- return StringRef();
- return ::getStringField(getNodeField(DbgNode, 1), 1);
-}
-
-DIArray DICompileUnit::getEnumTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
- return DIArray();
-
- return DIArray(getNodeField(DbgNode, 7));
-}
-
-DIArray DICompileUnit::getRetainedTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
- return DIArray();
-
- return DIArray(getNodeField(DbgNode, 8));
-}
-
-DIArray DICompileUnit::getSubprograms() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
- return DIArray();
-
- return DIArray(getNodeField(DbgNode, 9));
-}
-
-
-DIArray DICompileUnit::getGlobalVariables() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
- return DIArray();
-
- return DIArray(getNodeField(DbgNode, 10));
-}
-
-DIArray DICompileUnit::getImportedEntities() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
- return DIArray();
-
- return DIArray(getNodeField(DbgNode, 11));
-}
-
-/// fixupSubprogramName - Replace contains special characters used
-/// in a typical Objective-C names with '.' in a given string.
-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 = FName.size(); i < e; ++i) {
- char C = FName[i];
- if (C == '[')
- isObjCLike = true;
-
- if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
- C == '+' || C == '(' || C == ')'))
- Out.push_back('.');
- else
- Out.push_back(C);
- }
-}
-
-/// 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;
- 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;
- fixupSubprogramName(Fn, Name);
- return M.getOrInsertNamedMetadata(Name.str());
-}
-
-/// createInlinedVariable - Create a new inlined variable based on current
-/// variable.
-/// @param DV Current Variable.
-/// @param InlinedScope Location at current variable is inlined.
-DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
- 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(InlinedScope) :
- Elts.push_back(DV->getOperand(i));
- return DIVariable(MDNode::get(VMContext, Elts));
-}
-
-/// cleanseInlinedVariable - Remove inlined scope from the variable.
-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));
- return DIVariable(MDNode::get(VMContext, Elts));
-}
-
-/// getDISubprogram - Find subprogram that is enclosing this scope.
-DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
- DIDescriptor D(Scope);
- if (D.isSubprogram())
- return DISubprogram(Scope);
-
- if (D.isLexicalBlockFile())
- return getDISubprogram(DILexicalBlockFile(Scope).getContext());
-
- if (D.isLexicalBlock())
- return getDISubprogram(DILexicalBlock(Scope).getContext());
-
- return DISubprogram();
-}
-
-/// getDICompositeType - Find underlying composite type.
-DICompositeType llvm::getDICompositeType(DIType T) {
- if (T.isCompositeType())
- return DICompositeType(T);
-
- 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();
-}
-
-/// 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();
-}
-
-/// processModule - Process entire module and collect debug info.
-void DebugInfoFinder::processModule(const Module &M) {
- if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
- TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
- for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
- DICompileUnit CU(CU_Nodes->getOperand(i));
- addCompileUnit(CU);
- DIArray GVs = CU.getGlobalVariables();
- for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) {
- DIGlobalVariable DIG(GVs.getElement(i));
- if (addGlobalVariable(DIG)) {
- processScope(DIG.getContext());
- processType(DIG.getType());
- }
- }
- DIArray SPs = CU.getSubprograms();
- for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
- processSubprogram(DISubprogram(SPs.getElement(i)));
- DIArray EnumTypes = CU.getEnumTypes();
- for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
- processType(DIType(EnumTypes.getElement(i)));
- DIArray RetainedTypes = CU.getRetainedTypes();
- for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
- processType(DIType(RetainedTypes.getElement(i)));
- 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());
- }
- // FIXME: We really shouldn't be bailing out after visiting just one CU
- return;
- }
- }
-}
-
-/// processLocation - Process DILocation.
-void DebugInfoFinder::processLocation(DILocation Loc) {
- if (!Loc) return;
- processScope(Loc.getScope());
- processLocation(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().resolve(TypeIdentifierMap));
- DIArray DA = DCT.getTypeArray();
- for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
- DIDescriptor D = DA.getElement(i);
- if (D.isType())
- processType(DIType(D));
- else if (D.isSubprogram())
- processSubprogram(DISubprogram(D));
- }
- } else if (DT.isDerivedType()) {
- DIDerivedType DDT(DT);
- 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());
- }
-}
-
-/// processLexicalBlock
-void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
- DIScope Context = LB.getContext();
- if (Context.isLexicalBlock())
- return processLexicalBlock(DILexicalBlock(Context));
- else if (Context.isLexicalBlockFile()) {
- DILexicalBlockFile DBF = DILexicalBlockFile(Context);
- return processLexicalBlock(DILexicalBlock(DBF.getScope()));
- }
- else
- return processSubprogram(DISubprogram(Context));
-}
-
-/// processSubprogram - Process DISubprogram.
-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) {
- MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
- if (!N) return;
-
- DIDescriptor DV(N);
- if (!DV.isVariable())
- return;
-
- if (!NodesSeen.insert(DV))
- return;
- processScope(DIVariable(N).getContext());
- processType(DIVariable(N).getType());
-}
-
-void DebugInfoFinder::processValue(const DbgValueInst *DVI) {
- MDNode *N = dyn_cast<MDNode>(DVI->getVariable());
- if (!N) return;
-
- 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)
- return false;
-
- if (!NodesSeen.insert(DT))
- return false;
-
- TYs.push_back(DT);
- return true;
-}
-
-/// addCompileUnit - Add compile unit into CUs.
-bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
- if (!CU)
- return false;
- if (!NodesSeen.insert(CU))
- return false;
-
- CUs.push_back(CU);
- return true;
-}
-
-/// addGlobalVariable - Add global variable into GVs.
-bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
- if (!DIG)
- return false;
-
- if (!NodesSeen.insert(DIG))
- return false;
-
- GVs.push_back(DIG);
- return true;
-}
-
-// addSubprogram - Add subprgoram into SPs.
-bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
- if (!SP)
- return false;
-
- if (!NodesSeen.insert(SP))
- return false;
-
- SPs.push_back(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 - Print descriptor.
-void DIDescriptor::print(raw_ostream &OS) const {
- if (!DbgNode) return;
-
- if (const char *Tag = dwarf::TagString(getTag()))
- OS << "[ " << Tag << " ]";
-
- if (this->isSubrange()) {
- DISubrange(DbgNode).printInternal(OS);
- } else if (this->isCompileUnit()) {
- DICompileUnit(DbgNode).printInternal(OS);
- } else if (this->isFile()) {
- DIFile(DbgNode).printInternal(OS);
- } else if (this->isEnumerator()) {
- DIEnumerator(DbgNode).printInternal(OS);
- } else if (this->isBasicType()) {
- DIType(DbgNode).printInternal(OS);
- } else if (this->isDerivedType()) {
- DIDerivedType(DbgNode).printInternal(OS);
- } else if (this->isCompositeType()) {
- DICompositeType(DbgNode).printInternal(OS);
- } else if (this->isSubprogram()) {
- DISubprogram(DbgNode).printInternal(OS);
- } else if (this->isGlobalVariable()) {
- DIGlobalVariable(DbgNode).printInternal(OS);
- } else if (this->isVariable()) {
- DIVariable(DbgNode).printInternal(OS);
- } else if (this->isObjCProperty()) {
- DIObjCProperty(DbgNode).printInternal(OS);
- } else if (this->isNameSpace()) {
- DINameSpace(DbgNode).printInternal(OS);
- } else if (this->isScope()) {
- DIScope(DbgNode).printInternal(OS);
- }
-}
-
-void DISubrange::printInternal(raw_ostream &OS) const {
- int64_t Count = getCount();
- if (Count != -1)
- OS << " [" << getLo() << ", " << Count - 1 << ']';
- else
- OS << " [unbounded]";
-}
-
-void DIScope::printInternal(raw_ostream &OS) const {
- OS << " [" << getDirectory() << "/" << getFilename() << ']';
-}
-
-void DICompileUnit::printInternal(raw_ostream &OS) const {
- DIScope::printInternal(OS);
- OS << " [";
- unsigned Lang = getLanguage();
- if (const char *LangStr = dwarf::LanguageString(Lang))
- OS << LangStr;
- else
- (OS << "lang 0x").write_hex(Lang);
- OS << ']';
-}
-
-void DIEnumerator::printInternal(raw_ostream &OS) const {
- OS << " [" << getName() << " :: " << getEnumValue() << ']';
-}
-
-void DIType::printInternal(raw_ostream &OS) const {
- if (!DbgNode) return;
-
- StringRef Res = getName();
- if (!Res.empty())
- OS << " [" << Res << "]";
-
- // TODO: Print context?
-
- OS << " [line " << getLineNumber()
- << ", size " << getSizeInBits()
- << ", align " << getAlignInBits()
- << ", offset " << getOffsetInBits();
- if (isBasicType())
- if (const char *Enc =
- dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding()))
- OS << ", enc " << Enc;
- OS << "]";
-
- if (isPrivate())
- OS << " [private]";
- else if (isProtected())
- OS << " [protected]";
-
- if (isArtificial())
- OS << " [artificial]";
-
- if (isForwardDecl())
- 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())
- OS << " [static]";
-}
-
-void DIDerivedType::printInternal(raw_ostream &OS) const {
- DIType::printInternal(OS);
- OS << " [from " << getTypeDerivedFrom().getName() << ']';
-}
-
-void DICompositeType::printInternal(raw_ostream &OS) const {
- DIType::printInternal(OS);
- DIArray A = getTypeArray();
- OS << " [" << A.getNumElements() << " elements]";
-}
-
-void DINameSpace::printInternal(raw_ostream &OS) const {
- StringRef Name = getName();
- if (!Name.empty())
- OS << " [" << Name << ']';
-
- OS << " [line " << getLineNumber() << ']';
-}
-
-void DISubprogram::printInternal(raw_ostream &OS) const {
- // TODO : Print context
- OS << " [line " << getLineNumber() << ']';
-
- if (isLocalToUnit())
- OS << " [local]";
-
- if (isDefinition())
- OS << " [def]";
-
- if (getScopeLineNumber() != getLineNumber())
- OS << " [scope " << getScopeLineNumber() << "]";
-
- if (isPrivate())
- OS << " [private]";
- else if (isProtected())
- OS << " [protected]";
-
- StringRef Res = getName();
- if (!Res.empty())
- OS << " [" << Res << ']';
-}
-
-void DIGlobalVariable::printInternal(raw_ostream &OS) const {
- StringRef Res = getName();
- if (!Res.empty())
- OS << " [" << Res << ']';
-
- OS << " [line " << getLineNumber() << ']';
-
- // TODO : Print context
-
- if (isLocalToUnit())
- OS << " [local]";
-
- if (isDefinition())
- OS << " [def]";
-}
-
-void DIVariable::printInternal(raw_ostream &OS) const {
- StringRef Res = getName();
- if (!Res.empty())
- OS << " [" << Res << ']';
-
- OS << " [line " << getLineNumber() << ']';
-}
-
-void DIObjCProperty::printInternal(raw_ostream &OS) const {
- StringRef Name = getObjCPropertyName();
- if (!Name.empty())
- OS << " [" << Name << ']';
-
- OS << " [line " << getLineNumber()
- << ", properties " << getUnsignedField(6) << ']';
-}
-
-static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS,
- const LLVMContext &Ctx) {
- 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.
- CommentOS << Scope.getFilename();
- CommentOS << ':' << DL.getLine();
- if (DL.getCol() != 0)
- CommentOS << ':' << DL.getCol();
- DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(DL.getInlinedAt(Ctx));
- if (!InlinedAtDL.isUnknown()) {
- CommentOS << " @[ ";
- printDebugLoc(InlinedAtDL, CommentOS, Ctx);
- CommentOS << " ]";
- }
- }
-}
-
-void DIVariable::printExtendedName(raw_ostream &OS) const {
- const LLVMContext &Ctx = DbgNode->getContext();
- StringRef Res = getName();
- if (!Res.empty())
- OS << Res << "," << getLineNumber();
- if (MDNode *InlinedAt = getInlinedAt()) {
- DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(InlinedAt);
- if (!InlinedAtDL.isUnknown()) {
- OS << " @[";
- printDebugLoc(InlinedAtDL, OS, Ctx);
- OS << "]";
- }
- }
-}
-
-/// 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));
-}
+//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the helper classes used to build and interpret debug
+// information in LLVM IR form.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/IntrinsicInst.h"
+#include "llvm/IR/Intrinsics.h"
+#include "llvm/IR/Module.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Dwarf.h"
+#include "llvm/Support/ValueHandle.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+using namespace llvm::dwarf;
+
+//===----------------------------------------------------------------------===//
+// DIDescriptor
+//===----------------------------------------------------------------------===//
+
+bool DIDescriptor::Verify() const {
+ return DbgNode &&
+ (DIDerivedType(DbgNode).Verify() ||
+ DICompositeType(DbgNode).Verify() || DIBasicType(DbgNode).Verify() ||
+ DIVariable(DbgNode).Verify() || DISubprogram(DbgNode).Verify() ||
+ DIGlobalVariable(DbgNode).Verify() || DIFile(DbgNode).Verify() ||
+ DICompileUnit(DbgNode).Verify() || DINameSpace(DbgNode).Verify() ||
+ DILexicalBlock(DbgNode).Verify() ||
+ DILexicalBlockFile(DbgNode).Verify() ||
+ DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
+ DIObjCProperty(DbgNode).Verify() ||
+ DITemplateTypeParameter(DbgNode).Verify() ||
+ DITemplateValueParameter(DbgNode).Verify() ||
+ DIImportedEntity(DbgNode).Verify());
+}
+
+static Value *getField(const MDNode *DbgNode, unsigned Elt) {
+ if (DbgNode == 0 || Elt >= DbgNode->getNumOperands())
+ return 0;
+ return DbgNode->getOperand(Elt);
+}
+
+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) {
+ if (MDString *MDS = dyn_cast_or_null<MDString>(getField(DbgNode, Elt)))
+ return MDS->getString();
+ return StringRef();
+}
+
+StringRef DIDescriptor::getStringField(unsigned Elt) const {
+ return ::getStringField(DbgNode, Elt);
+}
+
+uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
+ if (DbgNode == 0)
+ return 0;
+
+ if (Elt < DbgNode->getNumOperands())
+ if (ConstantInt *CI
+ = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
+ return CI->getZExtValue();
+
+ return 0;
+}
+
+int64_t DIDescriptor::getInt64Field(unsigned Elt) const {
+ if (DbgNode == 0)
+ return 0;
+
+ if (Elt < DbgNode->getNumOperands())
+ if (ConstantInt *CI
+ = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
+ return CI->getSExtValue();
+
+ return 0;
+}
+
+DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
+ MDNode *Field = getNodeField(DbgNode, Elt);
+ return DIDescriptor(Field);
+}
+
+GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
+ if (DbgNode == 0)
+ return 0;
+
+ if (Elt < DbgNode->getNumOperands())
+ return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
+ return 0;
+}
+
+Constant *DIDescriptor::getConstantField(unsigned Elt) const {
+ if (DbgNode == 0)
+ return 0;
+
+ if (Elt < DbgNode->getNumOperands())
+ return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
+ return 0;
+}
+
+Function *DIDescriptor::getFunctionField(unsigned Elt) const {
+ if (DbgNode == 0)
+ return 0;
+
+ if (Elt < DbgNode->getNumOperands())
+ return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
+ return 0;
+}
+
+void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
+ if (DbgNode == 0)
+ return;
+
+ if (Elt < DbgNode->getNumOperands()) {
+ MDNode *Node = const_cast<MDNode*>(DbgNode);
+ Node->replaceOperandWith(Elt, F);
+ }
+}
+
+unsigned DIVariable::getNumAddrElements() const {
+ return DbgNode->getNumOperands()-8;
+}
+
+/// getInlinedAt - If this variable is inlined then return inline location.
+MDNode *DIVariable::getInlinedAt() const {
+ return getNodeField(DbgNode, 7);
+}
+
+//===----------------------------------------------------------------------===//
+// Predicates
+//===----------------------------------------------------------------------===//
+
+/// isBasicType - Return true if the specified tag is legal for
+/// DIBasicType.
+bool DIDescriptor::isBasicType() const {
+ if (!DbgNode) return false;
+ switch (getTag()) {
+ case dwarf::DW_TAG_base_type:
+ case dwarf::DW_TAG_unspecified_type:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
+bool DIDescriptor::isDerivedType() const {
+ if (!DbgNode) return false;
+ switch (getTag()) {
+ case dwarf::DW_TAG_typedef:
+ case dwarf::DW_TAG_pointer_type:
+ case dwarf::DW_TAG_ptr_to_member_type:
+ case dwarf::DW_TAG_reference_type:
+ case dwarf::DW_TAG_rvalue_reference_type:
+ case dwarf::DW_TAG_const_type:
+ case dwarf::DW_TAG_volatile_type:
+ case dwarf::DW_TAG_restrict_type:
+ case dwarf::DW_TAG_member:
+ case dwarf::DW_TAG_inheritance:
+ case dwarf::DW_TAG_friend:
+ return true;
+ default:
+ // CompositeTypes are currently modelled as DerivedTypes.
+ return isCompositeType();
+ }
+}
+
+/// isCompositeType - Return true if the specified tag is legal for
+/// DICompositeType.
+bool DIDescriptor::isCompositeType() const {
+ if (!DbgNode) return false;
+ switch (getTag()) {
+ case dwarf::DW_TAG_array_type:
+ case dwarf::DW_TAG_structure_type:
+ case dwarf::DW_TAG_union_type:
+ case dwarf::DW_TAG_enumeration_type:
+ case dwarf::DW_TAG_subroutine_type:
+ case dwarf::DW_TAG_class_type:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// isVariable - Return true if the specified tag is legal for DIVariable.
+bool DIDescriptor::isVariable() const {
+ if (!DbgNode) return false;
+ switch (getTag()) {
+ case dwarf::DW_TAG_auto_variable:
+ case dwarf::DW_TAG_arg_variable:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/// isType - Return true if the specified tag is legal for DIType.
+bool DIDescriptor::isType() const {
+ return isBasicType() || isCompositeType() || isDerivedType();
+}
+
+/// isSubprogram - Return true if the specified tag is legal for
+/// DISubprogram.
+bool DIDescriptor::isSubprogram() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
+}
+
+/// isGlobalVariable - Return true if the specified tag is legal for
+/// DIGlobalVariable.
+bool DIDescriptor::isGlobalVariable() const {
+ return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
+ getTag() == dwarf::DW_TAG_constant);
+}
+
+/// isUnspecifiedParmeter - Return true if the specified tag is
+/// DW_TAG_unspecified_parameters.
+bool DIDescriptor::isUnspecifiedParameter() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
+}
+
+/// isScope - Return true if the specified tag is one of the scope
+/// related tag.
+bool DIDescriptor::isScope() const {
+ 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 isType();
+}
+
+/// isTemplateTypeParameter - Return true if the specified tag is
+/// DW_TAG_template_type_parameter.
+bool DIDescriptor::isTemplateTypeParameter() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
+}
+
+/// 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 ||
+ 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.
+bool DIDescriptor::isCompileUnit() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
+}
+
+/// isFile - Return true if the specified tag is DW_TAG_file_type.
+bool DIDescriptor::isFile() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_file_type;
+}
+
+/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
+bool DIDescriptor::isNameSpace() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_namespace;
+}
+
+/// isLexicalBlockFile - Return true if the specified descriptor is a
+/// lexical block with an extra file.
+bool DIDescriptor::isLexicalBlockFile() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
+ (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);
+}
+
+/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
+bool DIDescriptor::isSubrange() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
+}
+
+/// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
+bool DIDescriptor::isEnumerator() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
+}
+
+/// isObjCProperty - Return true if the specified tag is DW_TAG_APPLE_property.
+bool DIDescriptor::isObjCProperty() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
+}
+
+/// \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
+//===----------------------------------------------------------------------===//
+
+unsigned DIArray::getNumElements() const {
+ if (!DbgNode)
+ return 0;
+ return DbgNode->getNumOperands();
+}
+
+/// replaceAllUsesWith - Replace all uses of the MDNode used by this
+/// type with the one in the passed descriptor.
+void DIType::replaceAllUsesWith(DIDescriptor &D) {
+
+ 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
+ // which, due to uniquing, has merged with the source. We shield clients from
+ // this detail by allowing a value to be replaced with replaceAllUsesWith()
+ // itself.
+ if (DbgNode != D) {
+ MDNode *Node = const_cast<MDNode*>(DbgNode);
+ const MDNode *DN = D;
+ const Value *V = cast_or_null<Value>(DN);
+ Node->replaceAllUsesWith(const_cast<Value*>(V));
+ MDNode::deleteTemporary(Node);
+ }
+}
+
+/// replaceAllUsesWith - Replace all uses of the MDNode used by this
+/// type with the one in D.
+void DIType::replaceAllUsesWith(MDNode *D) {
+
+ 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
+ // which, due to uniquing, has merged with the source. We shield clients from
+ // this detail by allowing a value to be replaced with replaceAllUsesWith()
+ // itself.
+ if (DbgNode != D) {
+ MDNode *Node = const_cast<MDNode*>(DbgNode);
+ const MDNode *DN = D;
+ const Value *V = cast_or_null<Value>(DN);
+ Node->replaceAllUsesWith(const_cast<Value*>(V));
+ MDNode::deleteTemporary(Node);
+ }
+}
+
+/// Verify - Verify that a compile unit is well formed.
+bool DICompileUnit::Verify() const {
+ if (!isCompileUnit())
+ return false;
+
+ // Don't bother verifying the compilation directory or producer string
+ // as those could be empty.
+ if (getFilename().empty())
+ return false;
+
+ return DbgNode->getNumOperands() == 13;
+}
+
+/// Verify - Verify that an ObjC property is well formed.
+bool DIObjCProperty::Verify() const {
+ if (!isObjCProperty())
+ 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;
+ // Make sure Context @ field 2 is MDNode.
+ if (!fieldIsScopeRef(DbgNode, 2))
+ return false;
+
+ // 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_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;
+}
+
+/// Verify - Verify that a basic type descriptor is well formed.
+bool DIBasicType::Verify() const {
+ return isBasicType() && DbgNode->getNumOperands() == 10;
+}
+
+/// 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;
+}
+
+/// Verify - Verify that a composite type descriptor is well formed.
+bool DICompositeType::Verify() const {
+ if (!isCompositeType())
+ return false;
+
+ // 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() == 15;
+}
+
+/// Verify - Verify that a subprogram descriptor is well formed.
+bool DISubprogram::Verify() const {
+ if (!isSubprogram())
+ return false;
+
+ // Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode.
+ if (!fieldIsScopeRef(DbgNode, 2))
+ return false;
+ if (!fieldIsMDNode(DbgNode, 7))
+ return false;
+ // Containing type @ field 12.
+ if (!fieldIsTypeRef(DbgNode, 12))
+ return false;
+ return DbgNode->getNumOperands() == 20;
+}
+
+/// Verify - Verify that a global variable descriptor is well formed.
+bool DIGlobalVariable::Verify() const {
+ if (!isGlobalVariable())
+ return false;
+
+ if (getDisplayName().empty())
+ return false;
+ // Make sure context @ field 2 and type @ field 8 are MDNodes.
+ if (!fieldIsMDNode(DbgNode, 2))
+ return false;
+ if (!fieldIsMDNode(DbgNode, 8))
+ return false;
+ // Make sure StaticDataMemberDeclaration @ field 12 is MDNode.
+ if (!fieldIsMDNode(DbgNode, 12))
+ return false;
+
+ return DbgNode->getNumOperands() == 13;
+}
+
+/// Verify - Verify that a variable descriptor is well formed.
+bool DIVariable::Verify() const {
+ if (!isVariable())
+ return false;
+
+ // Make sure context @ field 1 and type @ field 5 are MDNodes.
+ if (!fieldIsMDNode(DbgNode, 1))
+ return false;
+ if (!fieldIsMDNode(DbgNode, 5))
+ return false;
+ return DbgNode->getNumOperands() >= 8;
+}
+
+/// Verify - Verify that a location descriptor is well formed.
+bool DILocation::Verify() const {
+ if (!DbgNode)
+ return false;
+
+ return DbgNode->getNumOperands() == 4;
+}
+
+/// Verify - Verify that a namespace descriptor is well formed.
+bool DINameSpace::Verify() const {
+ if (!isNameSpace())
+ return false;
+ return DbgNode->getNumOperands() == 5;
+}
+
+/// \brief Retrieve the MDNode for the directory/file pair.
+MDNode *DIFile::getFileNode() const {
+ return getNodeField(DbgNode, 1);
+}
+
+/// \brief Verify that the file descriptor is well formed.
+bool DIFile::Verify() const {
+ return isFile() && DbgNode->getNumOperands() == 2;
+}
+
+/// \brief Verify that the enumerator descriptor is well formed.
+bool DIEnumerator::Verify() const {
+ return isEnumerator() && DbgNode->getNumOperands() == 3;
+}
+
+/// \brief Verify that the subrange descriptor is well formed.
+bool DISubrange::Verify() const {
+ return isSubrange() && DbgNode->getNumOperands() == 3;
+}
+
+/// \brief Verify that the lexical block descriptor is well formed.
+bool DILexicalBlock::Verify() const {
+ return isLexicalBlock() && DbgNode->getNumOperands() == 6;
+}
+
+/// \brief Verify that the file-scoped lexical block descriptor is well formed.
+bool DILexicalBlockFile::Verify() const {
+ return isLexicalBlockFile() && DbgNode->getNumOperands() == 3;
+}
+
+/// \brief Verify that the template type parameter descriptor is well formed.
+bool DITemplateTypeParameter::Verify() const {
+ return isTemplateTypeParameter() && DbgNode->getNumOperands() == 7;
+}
+
+/// \brief Verify that the template value parameter descriptor is well formed.
+bool DITemplateValueParameter::Verify() const {
+ return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
+}
+
+/// \brief Verify that the imported module descriptor is well formed.
+bool DIImportedEntity::Verify() const {
+ return isImportedEntity() &&
+ (DbgNode->getNumOperands() == 4 || DbgNode->getNumOperands() == 5);
+}
+
+/// getObjCProperty - Return property node, if this ivar is associated with one.
+MDNode *DIDerivedType::getObjCProperty() const {
+ return getNodeField(DbgNode, 10);
+}
+
+MDString *DICompositeType::getIdentifier() const {
+ return cast_or_null<MDString>(getField(DbgNode, 14));
+}
+
+#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() == 15) &&
+ "If you're setting the template parameters this should include a slot "
+ "for that!");
+ TrackingVH<MDNode> N(*this);
+ 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.getRef());
+ DbgNode = N;
+}
+
+/// isInlinedFnArgument - Return true if this variable provides debugging
+/// information for an inlined function arguments.
+bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
+ assert(CurFn && "Invalid function");
+ if (!getContext().isSubprogram())
+ return false;
+ // This variable is not inlined function argument if its scope
+ // does not describe current function.
+ return !DISubprogram(getContext()).describes(CurFn);
+}
+
+/// describes - Return true if this subprogram provides debugging
+/// information for the function F.
+bool DISubprogram::describes(const Function *F) {
+ assert(F && "Invalid function");
+ if (F == getFunction())
+ return true;
+ StringRef Name = getLinkageName();
+ if (Name.empty())
+ Name = getName();
+ if (F->getName() == Name)
+ return true;
+ return false;
+}
+
+unsigned DISubprogram::isOptimized() const {
+ assert (DbgNode && "Invalid subprogram descriptor!");
+ if (DbgNode->getNumOperands() == 15)
+ return getUnsignedField(14);
+ return 0;
+}
+
+MDNode *DISubprogram::getVariablesNodes() const {
+ return getNodeField(DbgNode, 18);
+}
+
+DIArray DISubprogram::getVariables() const {
+ 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 {
+ if (!DbgNode)
+ return StringRef();
+ return ::getStringField(getNodeField(DbgNode, 1), 0);
+}
+
+StringRef DIScope::getDirectory() const {
+ if (!DbgNode)
+ return StringRef();
+ return ::getStringField(getNodeField(DbgNode, 1), 1);
+}
+
+DIArray DICompileUnit::getEnumTypes() const {
+ if (!DbgNode || DbgNode->getNumOperands() < 13)
+ return DIArray();
+
+ return DIArray(getNodeField(DbgNode, 7));
+}
+
+DIArray DICompileUnit::getRetainedTypes() const {
+ if (!DbgNode || DbgNode->getNumOperands() < 13)
+ return DIArray();
+
+ return DIArray(getNodeField(DbgNode, 8));
+}
+
+DIArray DICompileUnit::getSubprograms() const {
+ if (!DbgNode || DbgNode->getNumOperands() < 13)
+ return DIArray();
+
+ return DIArray(getNodeField(DbgNode, 9));
+}
+
+
+DIArray DICompileUnit::getGlobalVariables() const {
+ if (!DbgNode || DbgNode->getNumOperands() < 13)
+ return DIArray();
+
+ return DIArray(getNodeField(DbgNode, 10));
+}
+
+DIArray DICompileUnit::getImportedEntities() const {
+ if (!DbgNode || DbgNode->getNumOperands() < 13)
+ return DIArray();
+
+ return DIArray(getNodeField(DbgNode, 11));
+}
+
+/// fixupSubprogramName - Replace contains special characters used
+/// in a typical Objective-C names with '.' in a given string.
+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 = FName.size(); i < e; ++i) {
+ char C = FName[i];
+ if (C == '[')
+ isObjCLike = true;
+
+ if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
+ C == '+' || C == '(' || C == ')'))
+ Out.push_back('.');
+ else
+ Out.push_back(C);
+ }
+}
+
+/// 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;
+ 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;
+ fixupSubprogramName(Fn, Name);
+ return M.getOrInsertNamedMetadata(Name.str());
+}
+
+/// createInlinedVariable - Create a new inlined variable based on current
+/// variable.
+/// @param DV Current Variable.
+/// @param InlinedScope Location at current variable is inlined.
+DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
+ 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(InlinedScope) :
+ Elts.push_back(DV->getOperand(i));
+ return DIVariable(MDNode::get(VMContext, Elts));
+}
+
+/// cleanseInlinedVariable - Remove inlined scope from the variable.
+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));
+ return DIVariable(MDNode::get(VMContext, Elts));
+}
+
+/// getDISubprogram - Find subprogram that is enclosing this scope.
+DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
+ DIDescriptor D(Scope);
+ if (D.isSubprogram())
+ return DISubprogram(Scope);
+
+ if (D.isLexicalBlockFile())
+ return getDISubprogram(DILexicalBlockFile(Scope).getContext());
+
+ if (D.isLexicalBlock())
+ return getDISubprogram(DILexicalBlock(Scope).getContext());
+
+ return DISubprogram();
+}
+
+/// getDICompositeType - Find underlying composite type.
+DICompositeType llvm::getDICompositeType(DIType T) {
+ if (T.isCompositeType())
+ return DICompositeType(T);
+
+ 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();
+}
+
+/// 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();
+}
+
+/// processModule - Process entire module and collect debug info.
+void DebugInfoFinder::processModule(const Module &M) {
+ if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
+ TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
+ for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
+ DICompileUnit CU(CU_Nodes->getOperand(i));
+ addCompileUnit(CU);
+ DIArray GVs = CU.getGlobalVariables();
+ for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) {
+ DIGlobalVariable DIG(GVs.getElement(i));
+ if (addGlobalVariable(DIG)) {
+ processScope(DIG.getContext());
+ processType(DIG.getType());
+ }
+ }
+ DIArray SPs = CU.getSubprograms();
+ for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
+ processSubprogram(DISubprogram(SPs.getElement(i)));
+ DIArray EnumTypes = CU.getEnumTypes();
+ for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
+ processType(DIType(EnumTypes.getElement(i)));
+ DIArray RetainedTypes = CU.getRetainedTypes();
+ for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
+ processType(DIType(RetainedTypes.getElement(i)));
+ 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) return;
+ processScope(Loc.getScope());
+ processLocation(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().resolve(TypeIdentifierMap));
+ DIArray DA = DCT.getTypeArray();
+ for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
+ DIDescriptor D = DA.getElement(i);
+ if (D.isType())
+ processType(DIType(D));
+ else if (D.isSubprogram())
+ processSubprogram(DISubprogram(D));
+ }
+ } else if (DT.isDerivedType()) {
+ DIDerivedType DDT(DT);
+ 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());
+ }
+}
+
+/// processLexicalBlock
+void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
+ DIScope Context = LB.getContext();
+ if (Context.isLexicalBlock())
+ return processLexicalBlock(DILexicalBlock(Context));
+ else if (Context.isLexicalBlockFile()) {
+ DILexicalBlockFile DBF = DILexicalBlockFile(Context);
+ return processLexicalBlock(DILexicalBlock(DBF.getScope()));
+ }
+ else
+ return processSubprogram(DISubprogram(Context));
+}
+
+/// processSubprogram - Process DISubprogram.
+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) {
+ MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
+ if (!N) return;
+
+ DIDescriptor DV(N);
+ if (!DV.isVariable())
+ return;
+
+ if (!NodesSeen.insert(DV))
+ return;
+ processScope(DIVariable(N).getContext());
+ processType(DIVariable(N).getType());
+}
+
+void DebugInfoFinder::processValue(const DbgValueInst *DVI) {
+ MDNode *N = dyn_cast<MDNode>(DVI->getVariable());
+ if (!N) return;
+
+ 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)
+ return false;
+
+ if (!NodesSeen.insert(DT))
+ return false;
+
+ TYs.push_back(DT);
+ return true;
+}
+
+/// addCompileUnit - Add compile unit into CUs.
+bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
+ if (!CU)
+ return false;
+ if (!NodesSeen.insert(CU))
+ return false;
+
+ CUs.push_back(CU);
+ return true;
+}
+
+/// addGlobalVariable - Add global variable into GVs.
+bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
+ if (!DIG)
+ return false;
+
+ if (!NodesSeen.insert(DIG))
+ return false;
+
+ GVs.push_back(DIG);
+ return true;
+}
+
+// addSubprogram - Add subprgoram into SPs.
+bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
+ if (!SP)
+ return false;
+
+ if (!NodesSeen.insert(SP))
+ return false;
+
+ SPs.push_back(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 - Print descriptor.
+void DIDescriptor::print(raw_ostream &OS) const {
+ if (!DbgNode) return;
+
+ if (const char *Tag = dwarf::TagString(getTag()))
+ OS << "[ " << Tag << " ]";
+
+ if (this->isSubrange()) {
+ DISubrange(DbgNode).printInternal(OS);
+ } else if (this->isCompileUnit()) {
+ DICompileUnit(DbgNode).printInternal(OS);
+ } else if (this->isFile()) {
+ DIFile(DbgNode).printInternal(OS);
+ } else if (this->isEnumerator()) {
+ DIEnumerator(DbgNode).printInternal(OS);
+ } else if (this->isBasicType()) {
+ DIType(DbgNode).printInternal(OS);
+ } else if (this->isDerivedType()) {
+ DIDerivedType(DbgNode).printInternal(OS);
+ } else if (this->isCompositeType()) {
+ DICompositeType(DbgNode).printInternal(OS);
+ } else if (this->isSubprogram()) {
+ DISubprogram(DbgNode).printInternal(OS);
+ } else if (this->isGlobalVariable()) {
+ DIGlobalVariable(DbgNode).printInternal(OS);
+ } else if (this->isVariable()) {
+ DIVariable(DbgNode).printInternal(OS);
+ } else if (this->isObjCProperty()) {
+ DIObjCProperty(DbgNode).printInternal(OS);
+ } else if (this->isNameSpace()) {
+ DINameSpace(DbgNode).printInternal(OS);
+ } else if (this->isScope()) {
+ DIScope(DbgNode).printInternal(OS);
+ }
+}
+
+void DISubrange::printInternal(raw_ostream &OS) const {
+ int64_t Count = getCount();
+ if (Count != -1)
+ OS << " [" << getLo() << ", " << Count - 1 << ']';
+ else
+ OS << " [unbounded]";
+}
+
+void DIScope::printInternal(raw_ostream &OS) const {
+ OS << " [" << getDirectory() << "/" << getFilename() << ']';
+}
+
+void DICompileUnit::printInternal(raw_ostream &OS) const {
+ DIScope::printInternal(OS);
+ OS << " [";
+ unsigned Lang = getLanguage();
+ if (const char *LangStr = dwarf::LanguageString(Lang))
+ OS << LangStr;
+ else
+ (OS << "lang 0x").write_hex(Lang);
+ OS << ']';
+}
+
+void DIEnumerator::printInternal(raw_ostream &OS) const {
+ OS << " [" << getName() << " :: " << getEnumValue() << ']';
+}
+
+void DIType::printInternal(raw_ostream &OS) const {
+ if (!DbgNode) return;
+
+ StringRef Res = getName();
+ if (!Res.empty())
+ OS << " [" << Res << "]";
+
+ // TODO: Print context?
+
+ OS << " [line " << getLineNumber()
+ << ", size " << getSizeInBits()
+ << ", align " << getAlignInBits()
+ << ", offset " << getOffsetInBits();
+ if (isBasicType())
+ if (const char *Enc =
+ dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding()))
+ OS << ", enc " << Enc;
+ OS << "]";
+
+ if (isPrivate())
+ OS << " [private]";
+ else if (isProtected())
+ OS << " [protected]";
+
+ if (isArtificial())
+ OS << " [artificial]";
+
+ if (isForwardDecl())
+ 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())
+ OS << " [static]";
+}
+
+void DIDerivedType::printInternal(raw_ostream &OS) const {
+ DIType::printInternal(OS);
+ OS << " [from " << getTypeDerivedFrom().getName() << ']';
+}
+
+void DICompositeType::printInternal(raw_ostream &OS) const {
+ DIType::printInternal(OS);
+ DIArray A = getTypeArray();
+ OS << " [" << A.getNumElements() << " elements]";
+}
+
+void DINameSpace::printInternal(raw_ostream &OS) const {
+ StringRef Name = getName();
+ if (!Name.empty())
+ OS << " [" << Name << ']';
+
+ OS << " [line " << getLineNumber() << ']';
+}
+
+void DISubprogram::printInternal(raw_ostream &OS) const {
+ // TODO : Print context
+ OS << " [line " << getLineNumber() << ']';
+
+ if (isLocalToUnit())
+ OS << " [local]";
+
+ if (isDefinition())
+ OS << " [def]";
+
+ if (getScopeLineNumber() != getLineNumber())
+ OS << " [scope " << getScopeLineNumber() << "]";
+
+ if (isPrivate())
+ OS << " [private]";
+ else if (isProtected())
+ OS << " [protected]";
+
+ StringRef Res = getName();
+ if (!Res.empty())
+ OS << " [" << Res << ']';
+}
+
+void DIGlobalVariable::printInternal(raw_ostream &OS) const {
+ StringRef Res = getName();
+ if (!Res.empty())
+ OS << " [" << Res << ']';
+
+ OS << " [line " << getLineNumber() << ']';
+
+ // TODO : Print context
+
+ if (isLocalToUnit())
+ OS << " [local]";
+
+ if (isDefinition())
+ OS << " [def]";
+}
+
+void DIVariable::printInternal(raw_ostream &OS) const {
+ StringRef Res = getName();
+ if (!Res.empty())
+ OS << " [" << Res << ']';
+
+ OS << " [line " << getLineNumber() << ']';
+}
+
+void DIObjCProperty::printInternal(raw_ostream &OS) const {
+ StringRef Name = getObjCPropertyName();
+ if (!Name.empty())
+ OS << " [" << Name << ']';
+
+ OS << " [line " << getLineNumber()
+ << ", properties " << getUnsignedField(6) << ']';
+}
+
+static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS,
+ const LLVMContext &Ctx) {
+ 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.
+ CommentOS << Scope.getFilename();
+ CommentOS << ':' << DL.getLine();
+ if (DL.getCol() != 0)
+ CommentOS << ':' << DL.getCol();
+ DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(DL.getInlinedAt(Ctx));
+ if (!InlinedAtDL.isUnknown()) {
+ CommentOS << " @[ ";
+ printDebugLoc(InlinedAtDL, CommentOS, Ctx);
+ CommentOS << " ]";
+ }
+ }
+}
+
+void DIVariable::printExtendedName(raw_ostream &OS) const {
+ const LLVMContext &Ctx = DbgNode->getContext();
+ StringRef Res = getName();
+ if (!Res.empty())
+ OS << Res << "," << getLineNumber();
+ if (MDNode *InlinedAt = getInlinedAt()) {
+ DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(InlinedAt);
+ if (!InlinedAtDL.isUnknown()) {
+ OS << " @[";
+ printDebugLoc(InlinedAtDL, OS, Ctx);
+ OS << "]";
+ }
+ }
+}
+
+/// 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));
+}
Added: llvm/trunk/test/DebugInfo/debuginfofinder-multiple-cu.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/debuginfofinder-multiple-cu.ll?rev=192879&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/debuginfofinder-multiple-cu.ll (added)
+++ llvm/trunk/test/DebugInfo/debuginfofinder-multiple-cu.ll Thu Oct 17 05:27:12 2013
@@ -0,0 +1,40 @@
+; RUN: opt -analyze -module-debuginfo < %s | FileCheck %s
+
+; Produced from linking:
+; /tmp/test1.c containing f()
+; /tmp/test2.c containing g()
+
+; Verify that both compile units and both their contained functions are
+; listed by DebugInfoFinder:
+;CHECK: Compile Unit: [ DW_TAG_compile_unit ] [/tmp/test1.c] [DW_LANG_C99]
+;CHECK: Compile Unit: [ DW_TAG_compile_unit ] [/tmp/test2.c] [DW_LANG_C99]
+;CHECK: Subprogram: [ DW_TAG_subprogram ] [line 1] [def] [f]
+;CHECK: Subprogram: [ DW_TAG_subprogram ] [line 1] [def] [g]
+
+define void @f() {
+ ret void, !dbg !14
+}
+
+define void @g() {
+ ret void, !dbg !15
+}
+
+!llvm.dbg.cu = !{!0, !8}
+!llvm.module.flags = !{!13}
+
+!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.4 (192092)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/test1.c] [DW_LANG_C99]
+!1 = metadata !{metadata !"test1.c", metadata !"/tmp"}
+!2 = metadata !{i32 0}
+!3 = metadata !{metadata !4}
+!4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"f", metadata !"f", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, void ()* @f, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [f]
+!5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/test1.c]
+!6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
+!7 = metadata !{null}
+!8 = metadata !{i32 786449, metadata !9, i32 12, metadata !"clang version 3.4 (192092)", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !10, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/test2.c] [DW_LANG_C99]
+!9 = metadata !{metadata !"test2.c", metadata !"/tmp"}
+!10 = metadata !{metadata !11}
+!11 = metadata !{i32 786478, metadata !9, metadata !12, metadata !"g", metadata !"g", metadata !"", i32 1, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 0, i1 false, void ()* @g, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [g]
+!12 = metadata !{i32 786473, metadata !9} ; [ DW_TAG_file_type ] [/tmp/test2.c]
+!13 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
+!14 = metadata !{i32 1, i32 0, metadata !4, null}
+!15 = metadata !{i32 1, i32 0, metadata !11, null}
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