//
//===----------------------------------------------------------------------===//
-#include "llvm/DebugInfo.h"
+#include "llvm/IR/DebugInfo.h"
+#include "LLVMContextImpl.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/DIBuilder.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/IR/ValueHandle.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;
DIObjCProperty(DbgNode).Verify() ||
DITemplateTypeParameter(DbgNode).Verify() ||
DITemplateValueParameter(DbgNode).Verify() ||
- DIImportedEntity(DbgNode).Verify());
+ DIImportedEntity(DbgNode).Verify() || DIExpression(DbgNode).Verify());
}
-static Value *getField(const MDNode *DbgNode, unsigned Elt) {
- if (DbgNode == 0 || Elt >= DbgNode->getNumOperands())
- return 0;
+static Metadata *getField(const MDNode *DbgNode, unsigned Elt) {
+ if (!DbgNode || Elt >= DbgNode->getNumOperands())
+ return nullptr;
return DbgNode->getOperand(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)))
+ if (auto *C = getConstantField(Elt))
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(C))
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();
+ if (auto *C = getConstantField(Elt))
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(C))
+ return CI->getZExtValue();
return 0;
}
}
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;
+ return dyn_cast_or_null<GlobalVariable>(getConstantField(Elt));
}
Constant *DIDescriptor::getConstantField(unsigned Elt) const {
- if (DbgNode == 0)
- return 0;
+ if (!DbgNode)
+ return nullptr;
if (Elt < DbgNode->getNumOperands())
- return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
- return 0;
+ if (auto *C =
+ dyn_cast_or_null<ConstantAsMetadata>(DbgNode->getOperand(Elt)))
+ return C->getValue();
+ return nullptr;
}
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;
+ return dyn_cast_or_null<Function>(getConstantField(Elt));
}
void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
- if (DbgNode == 0)
+ if (!DbgNode)
return;
if (Elt < DbgNode->getNumOperands()) {
- MDNode *Node = const_cast<MDNode*>(DbgNode);
- Node->replaceOperandWith(Elt, F);
+ MDNode *Node = const_cast<MDNode *>(DbgNode);
+ Node->replaceOperandWith(Elt, F ? ConstantAsMetadata::get(F) : nullptr);
}
}
-unsigned DIVariable::getNumAddrElements() const {
- return DbgNode->getNumOperands()-8;
+static unsigned DIVariableInlinedAtIndex = 4;
+MDNode *DIVariable::getInlinedAt() const {
+ return getNodeField(DbgNode, DIVariableInlinedAtIndex);
}
-/// getInlinedAt - If this variable is inlined then return inline location.
-MDNode *DIVariable::getInlinedAt() const {
- return getNodeField(DbgNode, 7);
+/// \brief Return the size reported by the variable's type.
+unsigned DIVariable::getSizeInBits(const DITypeIdentifierMap &Map) {
+ DIType Ty = getType().resolve(Map);
+ // Follow derived types until we reach a type that
+ // reports back a size.
+ while (Ty.isDerivedType() && !Ty.getSizeInBits()) {
+ DIDerivedType DT(&*Ty);
+ Ty = DT.getTypeDerivedFrom().resolve(Map);
+ }
+ assert(Ty.getSizeInBits() && "type with size 0");
+ return Ty.getSizeInBits();
+}
+
+uint64_t DIExpression::getElement(unsigned Idx) const {
+ unsigned I = Idx + 1;
+ assert(I < getNumHeaderFields() &&
+ "non-existing complex address element requested");
+ return getHeaderFieldAs<int64_t>(I);
+}
+
+bool DIExpression::isVariablePiece() const {
+ return getNumElements() && getElement(0) == dwarf::DW_OP_piece;
+}
+
+uint64_t DIExpression::getPieceOffset() const {
+ assert(isVariablePiece());
+ return getElement(1);
+}
+
+uint64_t DIExpression::getPieceSize() const {
+ assert(isVariablePiece());
+ return getElement(2);
}
//===----------------------------------------------------------------------===//
// Predicates
//===----------------------------------------------------------------------===//
-/// isBasicType - Return true if the specified tag is legal for
-/// DIBasicType.
+bool DIDescriptor::isSubroutineType() const {
+ return DbgNode && getTag() == dwarf::DW_TAG_subroutine_type;
+}
+
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:
}
}
-/// 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:
}
}
-/// 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:
}
}
-/// 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:
}
}
-/// 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;
+ if (!DbgNode)
+ return false;
switch (getTag()) {
case dwarf::DW_TAG_compile_unit:
case dwarf::DW_TAG_lexical_block:
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);
+ DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 2;
}
-/// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
bool DIDescriptor::isLexicalBlock() const {
+ // FIXME: There are always exactly 4 header fields in DILexicalBlock, but
+ // something relies on this returning true for DILexicalBlockFile.
return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
- (DbgNode->getNumOperands() > 3);
+ DbgNode->getNumOperands() == 3 &&
+ (getNumHeaderFields() == 2 || getNumHeaderFields() == 4);
}
-/// 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);
}
+bool DIDescriptor::isExpression() const {
+ return DbgNode && (getTag() == dwarf::DW_TAG_expression);
+}
+
//===----------------------------------------------------------------------===//
// 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) {
+void DIDescriptor::replaceAllUsesWith(LLVMContext &VMContext, DIDescriptor D) {
assert(DbgNode && "Trying to replace an unverified type!");
// 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);
+ const MDNode *DN = D;
+ if (DbgNode == DN) {
+ SmallVector<Metadata *, 10> Ops(DbgNode->getNumOperands());
+ for (size_t i = 0; i != Ops.size(); ++i)
+ Ops[i] = DbgNode->getOperand(i);
+ DN = MDNode::get(VMContext, Ops);
}
-}
-/// 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);
- }
+ assert(DbgNode->isTemporary() && "Expected temporary node");
+ auto *Node = const_cast<MDNode *>(DbgNode);
+ Node->replaceAllUsesWith(const_cast<MDNode *>(DN));
+ MDNode::deleteTemporary(Node);
+ DbgNode = DN;
}
-/// 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;
+void DIDescriptor::replaceAllUsesWith(MDNode *D) {
+ assert(DbgNode && "Trying to replace an unverified type!");
+ assert(DbgNode != D && "This replacement should always happen");
+ assert(DbgNode->isTemporary() && "Expected temporary node");
+ auto *Node = const_cast<MDNode *>(DbgNode);
+ Node->replaceAllUsesWith(D);
+ MDNode::deleteTemporary(Node);
}
-/// Verify - Verify that a compile unit is well formed.
bool DICompileUnit::Verify() const {
if (!isCompileUnit())
return false;
if (getFilename().empty())
return false;
- return DbgNode->getNumOperands() == 13;
+ return DbgNode->getNumOperands() == 7 && getNumHeaderFields() == 8;
}
-/// 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;
+ return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 6;
}
-/// Check if a field at position Elt of a MDNode is a MDNode.
+/// \brief 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())
+ Metadata *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.
+/// \brief 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);
+ Metadata *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());
+/// \brief Check if a value can be a reference to a type.
+static bool isTypeRef(const Metadata *MD) {
+ if (!MD)
+ return true;
+ if (auto *S = dyn_cast<MDString>(MD))
+ return !S->getString().empty();
+ if (auto *N = dyn_cast<MDNode>(MD))
+ return DIType(N).isType();
+ return false;
}
-/// Check if a field at position Elt of a MDNode can be a reference to a type.
+/// \brief Check if referenced field might be a type.
static bool fieldIsTypeRef(const MDNode *DbgNode, unsigned Elt) {
- Value *Fld = getField(DbgNode, Elt);
- return isTypeRef(Fld);
+ return isTypeRef(dyn_cast_or_null<Metadata>(getField(DbgNode, Elt)));
}
-/// 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());
+/// \brief Check if a value can be a ScopeRef.
+static bool isScopeRef(const Metadata *MD) {
+ if (!MD)
+ return true;
+ if (auto *S = dyn_cast<MDString>(MD))
+ return !S->getString().empty();
+ return isa<MDNode>(MD);
}
-/// Check if a field at position Elt of a MDNode can be a ScopeRef.
+/// \brief 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);
+ return isScopeRef(dyn_cast_or_null<Metadata>(getField(DbgNode, Elt)));
}
-/// Verify - Verify that a type descriptor is well formed.
bool DIType::Verify() const {
if (!isType())
return false;
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();
+ return DIBasicType(DbgNode).Verify();
else if (isCompositeType())
- DICompositeType(DbgNode).Verify();
+ return DICompositeType(DbgNode).Verify();
else if (isDerivedType())
- DIDerivedType(DbgNode).Verify();
+ return 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;
+ return isBasicType() && DbgNode->getNumOperands() == 3 &&
+ getNumHeaderFields() == 8;
}
-/// Verify - Verify that a derived type descriptor is well formed.
bool DIDerivedType::Verify() const {
- // Make sure DerivedFrom @ field 9 is MDNode.
- if (!fieldIsMDNode(DbgNode, 9))
+ // Make sure DerivedFrom @ field 3 is TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
if (getTag() == dwarf::DW_TAG_ptr_to_member_type)
- // Make sure ClassType @ field 10 is a TypeRef.
- if (!fieldIsTypeRef(DbgNode, 10))
+ // Make sure ClassType @ field 4 is a TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 4))
return false;
- return isDerivedType() && DbgNode->getNumOperands() >= 10 &&
- DbgNode->getNumOperands() <= 14;
+ return isDerivedType() && DbgNode->getNumOperands() >= 4 &&
+ DbgNode->getNumOperands() <= 8 && getNumHeaderFields() >= 7 &&
+ getNumHeaderFields() <= 8;
}
-/// 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 MDNodes.
- if (!fieldIsMDNode(DbgNode, 9))
+ // Make sure DerivedFrom @ field 3 and ContainingType @ field 5 are TypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- if (!fieldIsTypeRef(DbgNode, 12))
+ if (!fieldIsTypeRef(DbgNode, 5))
return false;
- // Make sure the type identifier at field 14 is MDString, it can be null.
- if (!fieldIsMDString(DbgNode, 14))
+ // Make sure the type identifier at field 7 is MDString, it can be null.
+ if (!fieldIsMDString(DbgNode, 7))
return false;
- // If this is an array type verify that we have a DIType in the derived type
- // field as that's the type of our element.
- if (getTag() == dwarf::DW_TAG_array_type)
- if (!DIType(getTypeDerivedFrom()))
- return false;
+ // A subroutine type can't be both & and &&.
+ if (isLValueReference() && isRValueReference())
+ return false;
- return DbgNode->getNumOperands() == 15;
+ return DbgNode->getNumOperands() == 8 && getNumHeaderFields() == 8;
}
-/// Verify - Verify that a subprogram descriptor is well formed.
bool DISubprogram::Verify() const {
if (!isSubprogram())
return false;
- // Make sure context @ field 2 and type @ field 7 are MDNodes.
- if (!fieldIsMDNode(DbgNode, 2))
+ // Make sure context @ field 2 is a ScopeRef and type @ field 3 is a MDNode.
+ if (!fieldIsScopeRef(DbgNode, 2))
+ return false;
+ if (!fieldIsMDNode(DbgNode, 3))
return false;
- if (!fieldIsMDNode(DbgNode, 7))
+ // Containing type @ field 4.
+ if (!fieldIsTypeRef(DbgNode, 4))
return false;
- // Containing type @ field 12.
- if (!fieldIsTypeRef(DbgNode, 12))
+
+ // A subprogram can't be both & and &&.
+ if (isLValueReference() && isRValueReference())
return false;
- return DbgNode->getNumOperands() == 20;
+
+ // If a DISubprogram has an llvm::Function*, then scope chains from all
+ // instructions within the function should lead to this DISubprogram.
+ if (auto *F = getFunction()) {
+ for (auto &BB : *F) {
+ for (auto &I : BB) {
+ DebugLoc DL = I.getDebugLoc();
+ if (DL.isUnknown())
+ continue;
+
+ MDNode *Scope = nullptr;
+ MDNode *IA = nullptr;
+ // walk the inlined-at scopes
+ while ((IA = DL.getInlinedAt()))
+ DL = DebugLoc::getFromDILocation(IA);
+ DL.getScopeAndInlinedAt(Scope, IA);
+ assert(!IA);
+ while (!DIDescriptor(Scope).isSubprogram()) {
+ DILexicalBlockFile D(Scope);
+ Scope = D.isLexicalBlockFile()
+ ? D.getScope()
+ : DebugLoc::getFromDILexicalBlock(Scope).getScope();
+ }
+ if (!DISubprogram(Scope).describes(F))
+ return false;
+ }
+ }
+ }
+ return DbgNode->getNumOperands() == 9 && getNumHeaderFields() == 12;
}
-/// 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))
+ // Make sure context @ field 1 is an MDNode.
+ if (!fieldIsMDNode(DbgNode, 1))
return false;
- if (!fieldIsMDNode(DbgNode, 8))
+ // Make sure that type @ field 3 is a DITypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- // Make sure StaticDataMemberDeclaration @ field 12 is MDNode.
- if (!fieldIsMDNode(DbgNode, 12))
+ // Make sure StaticDataMemberDeclaration @ field 5 is MDNode.
+ if (!fieldIsMDNode(DbgNode, 5))
return false;
- return DbgNode->getNumOperands() == 13;
+ return DbgNode->getNumOperands() == 6 && getNumHeaderFields() == 7;
}
-/// 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.
+ // Make sure context @ field 1 is an MDNode.
if (!fieldIsMDNode(DbgNode, 1))
return false;
- if (!fieldIsMDNode(DbgNode, 5))
+ // Make sure that type @ field 3 is a DITypeRef.
+ if (!fieldIsTypeRef(DbgNode, 3))
return false;
- return DbgNode->getNumOperands() >= 8;
+
+ // Check the number of header fields, which is common between complex and
+ // simple variables.
+ if (getNumHeaderFields() != 4)
+ return false;
+
+ // Variable without an inline location.
+ if (DbgNode->getNumOperands() == 4)
+ return true;
+
+ // Variable with an inline location.
+ return getInlinedAt() != nullptr && DbgNode->getNumOperands() == 5;
}
-/// Verify - Verify that a location descriptor is well formed.
-bool DILocation::Verify() const {
+bool DIExpression::Verify() const {
+ // Empty DIExpressions may be represented as a nullptr.
if (!DbgNode)
- return false;
+ return true;
+
+ return isExpression() && DbgNode->getNumOperands() == 1;
+}
- return DbgNode->getNumOperands() == 4;
+bool DILocation::Verify() const {
+ return DbgNode && isa<MDLocation>(DbgNode);
}
-/// Verify - Verify that a namespace descriptor is well formed.
bool DINameSpace::Verify() const {
if (!isNameSpace())
return false;
- return DbgNode->getNumOperands() == 5;
+ return DbgNode->getNumOperands() == 3 && getNumHeaderFields() == 3;
}
-/// \brief Retrieve the MDNode for the directory/file pair.
-MDNode *DIFile::getFileNode() const {
- return getNodeField(DbgNode, 1);
-}
+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;
+ return isEnumerator() && DbgNode->getNumOperands() == 1 &&
+ getNumHeaderFields() == 3;
}
-/// \brief Verify that the subrange descriptor is well formed.
bool DISubrange::Verify() const {
- return isSubrange() && DbgNode->getNumOperands() == 3;
+ return isSubrange() && DbgNode->getNumOperands() == 1 &&
+ getNumHeaderFields() == 3;
}
-/// \brief Verify that the lexical block descriptor is well formed.
bool DILexicalBlock::Verify() const {
- return isLexicalBlock() && DbgNode->getNumOperands() == 6;
+ return isLexicalBlock() && DbgNode->getNumOperands() == 3 &&
+ getNumHeaderFields() == 4;
}
-/// \brief Verify that the file-scoped lexical block descriptor is well formed.
bool DILexicalBlockFile::Verify() const {
- return isLexicalBlockFile() && DbgNode->getNumOperands() == 3;
+ return isLexicalBlockFile() && DbgNode->getNumOperands() == 3 &&
+ getNumHeaderFields() == 2;
}
-/// \brief Verify that the template type parameter descriptor is well formed.
bool DITemplateTypeParameter::Verify() const {
- return isTemplateTypeParameter() && DbgNode->getNumOperands() == 7;
+ return isTemplateTypeParameter() && DbgNode->getNumOperands() == 4 &&
+ getNumHeaderFields() == 4;
}
-/// \brief Verify that the template value parameter descriptor is well formed.
bool DITemplateValueParameter::Verify() const {
- return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
+ return isTemplateValueParameter() && DbgNode->getNumOperands() == 5 &&
+ getNumHeaderFields() == 4;
}
-/// \brief Verify that the imported module descriptor is well formed.
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 {
- uint16_t 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();
-
- return BaseType.getSizeInBits();
+ return isImportedEntity() && DbgNode->getNumOperands() == 3 &&
+ getNumHeaderFields() == 3;
}
-/// getObjCProperty - Return property node, if this ivar is associated with one.
MDNode *DIDerivedType::getObjCProperty() const {
- return getNodeField(DbgNode, 10);
+ return getNodeField(DbgNode, 4);
}
MDString *DICompositeType::getIdentifier() const {
- return cast_or_null<MDString>(getField(DbgNode, 14));
+ return cast_or_null<MDString>(getField(DbgNode, 7));
}
#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)))
+ if (i == 0 && mdconst::hasa<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);
+ found = (E == cast<MDNode>(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);
+void DICompositeType::setArraysHelper(MDNode *Elements, MDNode *TParams) {
+ TrackingMDNodeRef 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)))
+ if (const MDNode *El = cast_or_null<MDNode>(N->getOperand(4)))
VerifySubsetOf(El, Elements);
#endif
- N->replaceOperandWith(10, Elements);
+ N->replaceOperandWith(4, Elements);
}
if (TParams)
- N->replaceOperandWith(13, TParams);
+ N->replaceOperandWith(6, 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.
-Value *DIScope::generateRef() {
+DIScopeRef DIScope::getRef() const {
if (!isCompositeType())
- return *this;
+ return DIScopeRef(*this);
DICompositeType DTy(DbgNode);
if (!DTy.getIdentifier())
- return *this;
- return 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.generateRef());
+ TrackingMDNodeRef N(*this);
+ N->replaceOperandWith(5, 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 !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 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);
+ return getNodeField(DbgNode, 8);
}
DIArray DISubprogram::getVariables() const {
- return DIArray(getNodeField(DbgNode, 18));
+ return DIArray(getNodeField(DbgNode, 8));
+}
+
+Metadata *DITemplateValueParameter::getValue() const {
+ return DbgNode->getOperand(3);
}
-Value *DITemplateValueParameter::getValue() const {
- return getField(DbgNode, 4);
+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(nullptr);
+}
+
+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 {
}
DIArray DICompileUnit::getEnumTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 7));
+ return DIArray(getNodeField(DbgNode, 2));
}
DIArray DICompileUnit::getRetainedTypes() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 8));
+ return DIArray(getNodeField(DbgNode, 3));
}
DIArray DICompileUnit::getSubprograms() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 9));
+ return DIArray(getNodeField(DbgNode, 4));
}
-
DIArray DICompileUnit::getGlobalVariables() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 10));
+ return DIArray(getNodeField(DbgNode, 5));
}
DIArray DICompileUnit::getImportedEntities() const {
- if (!DbgNode || DbgNode->getNumOperands() < 13)
+ if (!DbgNode || DbgNode->getNumOperands() < 7)
return DIArray();
- return DIArray(getNodeField(DbgNode, 11));
+ return DIArray(getNodeField(DbgNode, 6));
}
-/// 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);
+void DICompileUnit::replaceSubprograms(DIArray Subprograms) {
+ assert(Verify() && "Expected compile unit");
+ if (Subprograms == getSubprograms())
+ return;
- StringRef Prefix("llvm.dbg.lv.");
- Out.reserve(FName.size() + Prefix.size());
- Out.append(Prefix.begin(), Prefix.end());
+ const_cast<MDNode *>(DbgNode)->replaceOperandWith(4, Subprograms);
+}
- bool isObjCLike = false;
- for (size_t i = 0, e = FName.size(); i < e; ++i) {
- char C = FName[i];
- if (C == '[')
- isObjCLike = true;
+void DICompileUnit::replaceGlobalVariables(DIArray GlobalVariables) {
+ assert(Verify() && "Expected compile unit");
+ if (GlobalVariables == getGlobalVariables())
+ return;
- if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
- C == '+' || C == '(' || C == ')'))
- Out.push_back('.');
- else
- Out.push_back(C);
- }
+ const_cast<MDNode *>(DbgNode)->replaceOperandWith(5, GlobalVariables);
}
-/// 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());
+DILocation DILocation::copyWithNewScope(LLVMContext &Ctx,
+ DILexicalBlockFile NewScope) {
+ assert(Verify());
+ assert(NewScope && "Expected valid scope");
+
+ const auto *Old = cast<MDLocation>(DbgNode);
+ return DILocation(MDLocation::get(Ctx, Old->getLine(), Old->getColumn(),
+ NewScope, Old->getInlinedAt()));
}
-/// 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());
+unsigned DILocation::computeNewDiscriminator(LLVMContext &Ctx) {
+ std::pair<const char *, unsigned> Key(getFilename().data(), getLineNumber());
+ return ++Ctx.pImpl->DiscriminatorTable[Key];
}
-/// 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));
+ assert(DIVariable(DV).Verify() && "Expected a DIVariable");
+ if (!InlinedScope)
+ return cleanseInlinedVariable(DV, VMContext);
+
+ // Insert inlined scope.
+ SmallVector<Metadata *, 8> Elts;
+ for (unsigned I = 0, E = DIVariableInlinedAtIndex; I != E; ++I)
+ Elts.push_back(DV->getOperand(I));
+ Elts.push_back(InlinedScope);
+
+ DIVariable Inlined(MDNode::get(VMContext, Elts));
+ assert(Inlined.Verify() && "Expected to create a DIVariable");
+ return Inlined;
}
-/// 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));
+ assert(DIVariable(DV).Verify() && "Expected a DIVariable");
+ if (!DIVariable(DV).getInlinedAt())
+ return DIVariable(DV);
+
+ // Remove inlined scope.
+ SmallVector<Metadata *, 8> Elts;
+ for (unsigned I = 0, E = DIVariableInlinedAtIndex; I != E; ++I)
+ Elts.push_back(DV->getOperand(I));
+
+ DIVariable Cleansed(MDNode::get(VMContext, Elts));
+ assert(Cleansed.Verify() && "Expected to create a DIVariable");
+ return Cleansed;
}
-/// getDISubprogram - Find subprogram that is enclosing this scope.
DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
DIDescriptor D(Scope);
if (D.isSubprogram())
return DISubprogram();
}
-/// getDICompositeType - Find underlying composite type.
+DISubprogram llvm::getDISubprogram(const Function *F) {
+ // We look for the first instr that has a debug annotation leading back to F.
+ for (auto &BB : *F) {
+ auto Inst = std::find_if(BB.begin(), BB.end(), [](const Instruction &Inst) {
+ return !Inst.getDebugLoc().isUnknown();
+ });
+ if (Inst == BB.end())
+ continue;
+ DebugLoc DLoc = Inst->getDebugLoc();
+ const MDNode *Scope = DLoc.getScopeNode();
+ DISubprogram Subprogram = getDISubprogram(Scope);
+ return Subprogram.describes(F) ? Subprogram : DISubprogram();
+ }
+
+ return DISubprogram();
+}
+
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();
}
-/// Update DITypeIdentifierMap by going through retained types of each CU.
-DITypeIdentifierMap llvm::generateDITypeIdentifierMap(
- const NamedMDNode *CU_Nodes) {
+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));
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")) {
- TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
DICompileUnit CU(CU_Nodes->getOperand(i));
addCompileUnit(CU);
DIGlobalVariable DIG(GVs.getElement(i));
if (addGlobalVariable(DIG)) {
processScope(DIG.getContext());
- processType(DIG.getType());
+ processType(DIG.getType().resolve(TypeIdentifierMap));
}
}
DIArray SPs = CU.getSubprograms();
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();
+ DIImportedEntity Import = DIImportedEntity(Imports.getElement(i));
+ DIDescriptor Entity = Import.getEntity().resolve(TypeIdentifierMap);
if (Entity.isType())
processType(DIType(Entity));
else if (Entity.isSubprogram())
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;
+void DebugInfoFinder::processLocation(const Module &M, DILocation Loc) {
+ if (!Loc)
+ return;
+ InitializeTypeMap(M);
processScope(Loc.getScope());
- processLocation(Loc.getOrigLocation());
+ 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());
- DIArray DA = DCT.getTypeArray();
+ processType(DCT.getTypeDerivedFrom().resolve(TypeIdentifierMap));
+ if (DT.isSubroutineType()) {
+ DITypeArray DTA = DISubroutineType(DT).getTypeArray();
+ for (unsigned i = 0, e = DTA.getNumElements(); i != e; ++i)
+ processType(DTA.getElement(i).resolve(TypeIdentifierMap));
+ return;
+ }
+ DIArray DA = DCT.getElements();
for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
DIDescriptor D = DA.getElement(i);
if (D.isType())
}
} else if (DT.isDerivedType()) {
DIDerivedType DDT(DT);
- processType(DDT.getTypeDerivedFrom());
+ processType(DDT.getTypeDerivedFrom().resolve(TypeIdentifierMap));
}
}
}
}
-/// 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());
+ 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());
- processType(TType.getType());
+ processScope(TType.getContext().resolve(TypeIdentifierMap));
+ processType(TType.getType().resolve(TypeIdentifierMap));
} else if (Element.isTemplateValueParameter()) {
DITemplateValueParameter TVal(Element);
- processScope(TVal.getContext());
- processType(TVal.getType());
+ 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())
return;
- if (!NodesSeen.insert(DV))
+ if (!NodesSeen.insert(DV).second)
return;
processScope(DIVariable(N).getContext());
- processType(DIVariable(N).getType());
+ processType(DIVariable(N).getType().resolve(TypeIdentifierMap));
}
-void DebugInfoFinder::processValue(const DbgValueInst *DVI) {
+void DebugInfoFinder::processValue(const Module &M, const DbgValueInst *DVI) {
MDNode *N = dyn_cast<MDNode>(DVI->getVariable());
- if (!N) return;
+ if (!N)
+ return;
+ InitializeTypeMap(M);
DIDescriptor DV(N);
if (!DV.isVariable())
return;
- if (!NodesSeen.insert(DV))
+ if (!NodesSeen.insert(DV).second)
return;
processScope(DIVariable(N).getContext());
- processType(DIVariable(N).getType());
+ processType(DIVariable(N).getType().resolve(TypeIdentifierMap));
}
-/// addType - Add type into Tys.
bool DebugInfoFinder::addType(DIType DT) {
if (!DT)
return false;
- if (!NodesSeen.insert(DT))
+ if (!NodesSeen.insert(DT).second)
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))
+ if (!NodesSeen.insert(CU).second)
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))
+ if (!NodesSeen.insert(DIG).second)
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))
+ if (!NodesSeen.insert(SP).second)
return false;
SPs.push_back(SP);
// as null for now.
if (Scope->getNumOperands() == 0)
return false;
- if (!NodesSeen.insert(Scope))
+ if (!NodesSeen.insert(Scope).second)
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 << " ]";
DINameSpace(DbgNode).printInternal(OS);
} else if (this->isScope()) {
DIScope(DbgNode).printInternal(OS);
+ } else if (this->isExpression()) {
+ DIExpression(DbgNode).printInternal(OS);
}
}
}
void DIType::printInternal(raw_ostream &OS) const {
- if (!DbgNode) return;
+ if (!DbgNode)
+ return;
StringRef Res = getName();
if (!Res.empty())
// 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 << "]";
OS << " [private]";
else if (isProtected())
OS << " [protected]";
+ else if (isPublic())
+ OS << " [public]";
if (isArtificial())
OS << " [artificial]";
OS << " [vector]";
if (isStaticMember())
OS << " [static]";
+
+ if (isLValueReference())
+ OS << " [reference]";
+
+ if (isRValueReference())
+ OS << " [rvalue reference]";
}
void DIDerivedType::printInternal(raw_ostream &OS) const {
void DICompositeType::printInternal(raw_ostream &OS) const {
DIType::printInternal(OS);
- DIArray A = getTypeArray();
+ DIArray A = getElements();
OS << " [" << A.getNumElements() << " elements]";
}
OS << " [private]";
else if (isProtected())
OS << " [protected]";
+ else if (isPublic())
+ OS << " [public]";
+
+ if (isLValueReference())
+ OS << " [reference]";
+
+ if (isRValueReference())
+ OS << " [rvalue reference]";
StringRef Res = getName();
if (!Res.empty())
OS << " [line " << getLineNumber() << ']';
}
+void DIExpression::printInternal(raw_ostream &OS) const {
+ for (unsigned I = 0; I < getNumElements(); ++I) {
+ uint64_t OpCode = getElement(I);
+ OS << " [" << OperationEncodingString(OpCode);
+ switch (OpCode) {
+ case DW_OP_plus: {
+ OS << " " << getElement(++I);
+ break;
+ }
+ case DW_OP_piece: {
+ unsigned Offset = getElement(++I);
+ unsigned Size = getElement(++I);
+ OS << " offset=" << Offset << ", size=" << Size;
+ break;
+ }
+ case DW_OP_deref:
+ // No arguments.
+ break;
+ default:
+ // Else bail out early. This may be a line table entry.
+ OS << "Unknown]";
+ return;
+ }
+ OS << "]";
+ }
+}
+
void DIObjCProperty::printInternal(raw_ostream &OS) const {
StringRef Name = getObjCPropertyName();
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.");
+ 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();
}
}
-DIScopeRef::DIScopeRef(const Value *V) : Val(V) {
+template <> DIRef<DIScope>::DIRef(const Metadata *V) : Val(V) {
assert(isScopeRef(V) && "DIScopeRef should be a MDString or MDNode");
}
+template <> DIRef<DIType>::DIRef(const Metadata *V) : Val(V) {
+ assert(isTypeRef(V) && "DITypeRef should be a MDString or MDNode");
+}
+
+template <>
+DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const {
+ return DIScopeRef(cast_or_null<Metadata>(getField(DbgNode, Elt)));
+}
+template <> DITypeRef DIDescriptor::getFieldAs<DITypeRef>(unsigned Elt) const {
+ return DITypeRef(cast_or_null<Metadata>(getField(DbgNode, Elt)));
+}
+
+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->user_back());
+ CI->eraseFromParent();
+ }
+ Declare->eraseFromParent();
+ Changed = true;
+ }
-/// Given a DITypeIdentifierMap, tries to find the corresponding
-/// DIScope for a DIScopeRef.
-DIScope DIScopeRef::resolve(const DITypeIdentifierMap &Map) const {
- if (!Val)
- return DIScope();
+ if (Function *DbgVal = M.getFunction("llvm.dbg.value")) {
+ while (!DbgVal->use_empty()) {
+ CallInst *CI = cast<CallInst>(DbgVal->user_back());
+ CI->eraseFromParent();
+ }
+ DbgVal->eraseFromParent();
+ Changed = true;
+ }
- if (const MDNode *MD = dyn_cast<MDNode>(Val))
- return DIScope(MD);
+ 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;
+ }
+ }
- const MDString *MS = cast<MDString>(Val);
- // Find the corresponding MDNode.
- DITypeIdentifierMap::const_iterator Iter = Map.find(MS);
- assert(Iter != Map.end() && "Identifier not in the type map?");
- assert(DIType(Iter->second).isType() &&
- "MDNode in DITypeIdentifierMap should be a DIType.");
- return DIScope(Iter->second);
+ 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;
}
-/// Specialize getFieldAs to handle fields that are references to DIScopes.
-template <>
-DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const {
- return DIScopeRef(getField(DbgNode, Elt));
+unsigned llvm::getDebugMetadataVersionFromModule(const Module &M) {
+ if (auto *Val = mdconst::extract_or_null<ConstantInt>(
+ M.getModuleFlag("Debug Info Version")))
+ return Val->getZExtValue();
+ return 0;
+}
+
+llvm::DenseMap<const llvm::Function *, llvm::DISubprogram>
+llvm::makeSubprogramMap(const Module &M) {
+ DenseMap<const Function *, DISubprogram> R;
+
+ NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
+ if (!CU_Nodes)
+ return R;
+
+ for (MDNode *N : CU_Nodes->operands()) {
+ DICompileUnit CUNode(N);
+ DIArray SPs = CUNode.getSubprograms();
+ for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
+ DISubprogram SP(SPs.getElement(i));
+ if (Function *F = SP.getFunction())
+ R.insert(std::make_pair(F, SP));
+ }
+ }
+ return R;
}