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ba40985484
brace) so that we get more accurate line number information about the declaration of a given function and the line where the function first starts. Part of rdar://11026482 llvm-svn: 153916
1230 lines
35 KiB
C++
1230 lines
35 KiB
C++
//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the helper classes used to build and interpret debug
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// information in LLVM IR form.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/DebugInfo.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/IntrinsicInst.h"
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#include "llvm/Instructions.h"
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#include "llvm/Module.h"
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#include "llvm/Analysis/ValueTracking.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Dwarf.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::dwarf;
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//===----------------------------------------------------------------------===//
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// DIDescriptor
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//===----------------------------------------------------------------------===//
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DIDescriptor::DIDescriptor(const DIFile F) : DbgNode(F.DbgNode) {
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}
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DIDescriptor::DIDescriptor(const DISubprogram F) : DbgNode(F.DbgNode) {
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}
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DIDescriptor::DIDescriptor(const DILexicalBlockFile F) : DbgNode(F.DbgNode) {
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}
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DIDescriptor::DIDescriptor(const DILexicalBlock F) : DbgNode(F.DbgNode) {
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}
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DIDescriptor::DIDescriptor(const DIVariable F) : DbgNode(F.DbgNode) {
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}
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DIDescriptor::DIDescriptor(const DIType F) : DbgNode(F.DbgNode) {
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}
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StringRef
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DIDescriptor::getStringField(unsigned Elt) const {
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if (DbgNode == 0)
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return StringRef();
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if (Elt < DbgNode->getNumOperands())
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if (MDString *MDS = dyn_cast_or_null<MDString>(DbgNode->getOperand(Elt)))
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return MDS->getString();
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return StringRef();
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}
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uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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if (ConstantInt *CI = dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
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return CI->getZExtValue();
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return 0;
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}
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DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
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if (DbgNode == 0)
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return DIDescriptor();
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if (Elt < DbgNode->getNumOperands())
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return
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DIDescriptor(dyn_cast_or_null<const MDNode>(DbgNode->getOperand(Elt)));
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return DIDescriptor();
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}
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GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
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return 0;
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}
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Constant *DIDescriptor::getConstantField(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
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return 0;
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}
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Function *DIDescriptor::getFunctionField(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
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return 0;
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}
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unsigned DIVariable::getNumAddrElements() const {
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if (getVersion() <= llvm::LLVMDebugVersion8)
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return DbgNode->getNumOperands()-6;
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if (getVersion() == llvm::LLVMDebugVersion9)
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return DbgNode->getNumOperands()-7;
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return DbgNode->getNumOperands()-8;
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}
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/// getInlinedAt - If this variable is inlined then return inline location.
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MDNode *DIVariable::getInlinedAt() const {
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if (getVersion() <= llvm::LLVMDebugVersion9)
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return NULL;
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return dyn_cast_or_null<MDNode>(DbgNode->getOperand(7));
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}
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//===----------------------------------------------------------------------===//
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// Predicates
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//===----------------------------------------------------------------------===//
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/// isBasicType - Return true if the specified tag is legal for
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/// DIBasicType.
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bool DIDescriptor::isBasicType() const {
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if (!DbgNode) return false;
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switch (getTag()) {
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case dwarf::DW_TAG_base_type:
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case dwarf::DW_TAG_unspecified_type:
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return true;
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default:
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return false;
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}
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}
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/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
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bool DIDescriptor::isDerivedType() const {
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if (!DbgNode) return false;
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switch (getTag()) {
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case dwarf::DW_TAG_typedef:
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case dwarf::DW_TAG_pointer_type:
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case dwarf::DW_TAG_reference_type:
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case dwarf::DW_TAG_const_type:
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case dwarf::DW_TAG_volatile_type:
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case dwarf::DW_TAG_restrict_type:
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case dwarf::DW_TAG_member:
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case dwarf::DW_TAG_inheritance:
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case dwarf::DW_TAG_friend:
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return true;
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default:
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// CompositeTypes are currently modelled as DerivedTypes.
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return isCompositeType();
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}
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}
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/// isCompositeType - Return true if the specified tag is legal for
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/// DICompositeType.
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bool DIDescriptor::isCompositeType() const {
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if (!DbgNode) return false;
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switch (getTag()) {
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case dwarf::DW_TAG_array_type:
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case dwarf::DW_TAG_structure_type:
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case dwarf::DW_TAG_union_type:
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case dwarf::DW_TAG_enumeration_type:
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case dwarf::DW_TAG_vector_type:
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case dwarf::DW_TAG_subroutine_type:
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case dwarf::DW_TAG_class_type:
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return true;
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default:
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return false;
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}
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}
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/// isVariable - Return true if the specified tag is legal for DIVariable.
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bool DIDescriptor::isVariable() const {
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if (!DbgNode) return false;
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switch (getTag()) {
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case dwarf::DW_TAG_auto_variable:
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case dwarf::DW_TAG_arg_variable:
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case dwarf::DW_TAG_return_variable:
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return true;
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default:
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return false;
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}
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}
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/// isType - Return true if the specified tag is legal for DIType.
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bool DIDescriptor::isType() const {
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return isBasicType() || isCompositeType() || isDerivedType();
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}
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/// isSubprogram - Return true if the specified tag is legal for
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/// DISubprogram.
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bool DIDescriptor::isSubprogram() const {
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return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
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}
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/// isGlobalVariable - Return true if the specified tag is legal for
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/// DIGlobalVariable.
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bool DIDescriptor::isGlobalVariable() const {
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return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
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getTag() == dwarf::DW_TAG_constant);
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}
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/// isGlobal - Return true if the specified tag is legal for DIGlobal.
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bool DIDescriptor::isGlobal() const {
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return isGlobalVariable();
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}
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/// isUnspecifiedParmeter - Return true if the specified tag is
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/// DW_TAG_unspecified_parameters.
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bool DIDescriptor::isUnspecifiedParameter() const {
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return DbgNode && getTag() == dwarf::DW_TAG_unspecified_parameters;
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}
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/// isScope - Return true if the specified tag is one of the scope
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/// related tag.
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bool DIDescriptor::isScope() const {
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if (!DbgNode) return false;
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switch (getTag()) {
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case dwarf::DW_TAG_compile_unit:
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case dwarf::DW_TAG_lexical_block:
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case dwarf::DW_TAG_subprogram:
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case dwarf::DW_TAG_namespace:
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return true;
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default:
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break;
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}
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return false;
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}
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/// isTemplateTypeParameter - Return true if the specified tag is
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/// DW_TAG_template_type_parameter.
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bool DIDescriptor::isTemplateTypeParameter() const {
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return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
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}
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/// isTemplateValueParameter - Return true if the specified tag is
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/// DW_TAG_template_value_parameter.
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bool DIDescriptor::isTemplateValueParameter() const {
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return DbgNode && getTag() == dwarf::DW_TAG_template_value_parameter;
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}
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/// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit.
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bool DIDescriptor::isCompileUnit() const {
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return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
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}
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/// isFile - Return true if the specified tag is DW_TAG_file_type.
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bool DIDescriptor::isFile() const {
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return DbgNode && getTag() == dwarf::DW_TAG_file_type;
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}
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/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
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bool DIDescriptor::isNameSpace() const {
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return DbgNode && getTag() == dwarf::DW_TAG_namespace;
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}
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/// isLexicalBlockFile - Return true if the specified descriptor is a
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/// lexical block with an extra file.
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bool DIDescriptor::isLexicalBlockFile() const {
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return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
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(DbgNode->getNumOperands() == 3);
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}
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/// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
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bool DIDescriptor::isLexicalBlock() const {
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return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
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(DbgNode->getNumOperands() > 3);
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}
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/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
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bool DIDescriptor::isSubrange() const {
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return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
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}
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/// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
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bool DIDescriptor::isEnumerator() const {
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return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
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}
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/// isObjCProperty - Return true if the specified tag is DW_TAG
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bool DIDescriptor::isObjCProperty() const {
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return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
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}
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//===----------------------------------------------------------------------===//
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// Simple Descriptor Constructors and other Methods
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//===----------------------------------------------------------------------===//
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DIType::DIType(const MDNode *N) : DIScope(N) {
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if (!N) return;
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if (!isBasicType() && !isDerivedType() && !isCompositeType()) {
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DbgNode = 0;
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}
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}
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unsigned DIArray::getNumElements() const {
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if (!DbgNode)
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return 0;
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return DbgNode->getNumOperands();
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}
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/// replaceAllUsesWith - Replace all uses of debug info referenced by
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/// this descriptor.
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void DIType::replaceAllUsesWith(DIDescriptor &D) {
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if (!DbgNode)
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return;
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// Since we use a TrackingVH for the node, its easy for clients to manufacture
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// legitimate situations where they want to replaceAllUsesWith() on something
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// which, due to uniquing, has merged with the source. We shield clients from
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// this detail by allowing a value to be replaced with replaceAllUsesWith()
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// itself.
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if (DbgNode != D) {
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MDNode *Node = const_cast<MDNode*>(DbgNode);
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const MDNode *DN = D;
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const Value *V = cast_or_null<Value>(DN);
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Node->replaceAllUsesWith(const_cast<Value*>(V));
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MDNode::deleteTemporary(Node);
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}
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}
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/// replaceAllUsesWith - Replace all uses of debug info referenced by
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/// this descriptor.
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void DIType::replaceAllUsesWith(MDNode *D) {
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if (!DbgNode)
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return;
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// Since we use a TrackingVH for the node, its easy for clients to manufacture
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// legitimate situations where they want to replaceAllUsesWith() on something
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// which, due to uniquing, has merged with the source. We shield clients from
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// this detail by allowing a value to be replaced with replaceAllUsesWith()
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// itself.
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if (DbgNode != D) {
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MDNode *Node = const_cast<MDNode*>(DbgNode);
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const MDNode *DN = D;
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const Value *V = cast_or_null<Value>(DN);
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Node->replaceAllUsesWith(const_cast<Value*>(V));
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MDNode::deleteTemporary(Node);
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}
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}
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/// isUnsignedDIType - Return true if type encoding is unsigned.
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bool DIType::isUnsignedDIType() {
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DIDerivedType DTy(DbgNode);
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if (DTy.Verify())
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return DTy.getTypeDerivedFrom().isUnsignedDIType();
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DIBasicType BTy(DbgNode);
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if (BTy.Verify()) {
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unsigned Encoding = BTy.getEncoding();
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if (Encoding == dwarf::DW_ATE_unsigned ||
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Encoding == dwarf::DW_ATE_unsigned_char)
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return true;
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}
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return false;
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}
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/// Verify - Verify that a compile unit is well formed.
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bool DICompileUnit::Verify() const {
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if (!DbgNode)
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return false;
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StringRef N = getFilename();
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if (N.empty())
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return false;
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// It is possible that directory and produce string is empty.
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return true;
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}
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/// Verify - Verify that an ObjC property is well formed.
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bool DIObjCProperty::Verify() const {
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if (!DbgNode)
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return false;
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unsigned Tag = getTag();
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if (Tag != dwarf::DW_TAG_APPLE_property) return false;
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DIType Ty = getType();
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if (!Ty.Verify()) return false;
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// Don't worry about the rest of the strings for now.
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return true;
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}
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/// Verify - Verify that a type descriptor is well formed.
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bool DIType::Verify() const {
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if (!DbgNode)
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return false;
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if (getContext() && !getContext().Verify())
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return false;
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unsigned Tag = getTag();
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if (!isBasicType() && Tag != dwarf::DW_TAG_const_type &&
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Tag != dwarf::DW_TAG_volatile_type && Tag != dwarf::DW_TAG_pointer_type &&
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Tag != dwarf::DW_TAG_reference_type && Tag != dwarf::DW_TAG_restrict_type
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&& Tag != dwarf::DW_TAG_vector_type && Tag != dwarf::DW_TAG_array_type
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&& Tag != dwarf::DW_TAG_enumeration_type
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&& Tag != dwarf::DW_TAG_subroutine_type
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&& getFilename().empty())
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return false;
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return true;
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}
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/// Verify - Verify that a basic type descriptor is well formed.
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bool DIBasicType::Verify() const {
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return isBasicType();
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}
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/// Verify - Verify that a derived type descriptor is well formed.
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bool DIDerivedType::Verify() const {
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return isDerivedType();
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}
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/// Verify - Verify that a composite type descriptor is well formed.
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bool DICompositeType::Verify() const {
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if (!DbgNode)
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return false;
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if (getContext() && !getContext().Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a subprogram descriptor is well formed.
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bool DISubprogram::Verify() const {
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if (!DbgNode)
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return false;
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if (getContext() && !getContext().Verify())
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return false;
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DICompositeType Ty = getType();
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if (!Ty.Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a global variable descriptor is well formed.
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bool DIGlobalVariable::Verify() const {
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if (!DbgNode)
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return false;
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if (getDisplayName().empty())
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return false;
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|
|
|
if (getContext() && !getContext().Verify())
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|
return false;
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|
|
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DIType Ty = getType();
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if (!Ty.Verify())
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|
return false;
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|
if (!getGlobal() && !getConstant())
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return false;
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return true;
|
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}
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|
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/// Verify - Verify that a variable descriptor is well formed.
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bool DIVariable::Verify() const {
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if (!DbgNode)
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return false;
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|
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if (getContext() && !getContext().Verify())
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|
return false;
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|
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|
DIType Ty = getType();
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|
if (!Ty.Verify())
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|
return false;
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return true;
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|
}
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|
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|
/// Verify - Verify that a location descriptor is well formed.
|
|
bool DILocation::Verify() const {
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|
if (!DbgNode)
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|
return false;
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return DbgNode->getNumOperands() == 4;
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}
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/// Verify - Verify that a namespace descriptor is well formed.
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|
bool DINameSpace::Verify() const {
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if (!DbgNode)
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return false;
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if (getName().empty())
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return false;
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return true;
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}
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/// getOriginalTypeSize - If this type is derived from a base type then
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/// return base type size.
|
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uint64_t DIDerivedType::getOriginalTypeSize() const {
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unsigned Tag = getTag();
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if (Tag == dwarf::DW_TAG_member || Tag == dwarf::DW_TAG_typedef ||
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Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
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Tag == dwarf::DW_TAG_restrict_type) {
|
|
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)
|
|
return getSizeInBits();
|
|
else if (BaseType.isDerivedType())
|
|
return DIDerivedType(BaseType).getOriginalTypeSize();
|
|
else
|
|
return BaseType.getSizeInBits();
|
|
}
|
|
|
|
return getSizeInBits();
|
|
}
|
|
|
|
/// getObjCProperty - Return property node, if this ivar is associated with one.
|
|
MDNode *DIDerivedType::getObjCProperty() const {
|
|
if (getVersion() <= LLVMDebugVersion11 || DbgNode->getNumOperands() <= 10)
|
|
return NULL;
|
|
return dyn_cast_or_null<MDNode>(DbgNode->getOperand(10));
|
|
}
|
|
|
|
/// 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() == 16)
|
|
return getUnsignedField(15);
|
|
return 0;
|
|
}
|
|
|
|
MDNode *DISubprogram::getVariablesNodes() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() <= 19)
|
|
return NULL;
|
|
if (MDNode *Temp = dyn_cast_or_null<MDNode>(DbgNode->getOperand(19)))
|
|
return dyn_cast_or_null<MDNode>(Temp->getOperand(0));
|
|
return NULL;
|
|
}
|
|
|
|
DIArray DISubprogram::getVariables() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() <= 19)
|
|
return DIArray();
|
|
if (MDNode *T = dyn_cast_or_null<MDNode>(DbgNode->getOperand(19)))
|
|
if (MDNode *A = dyn_cast_or_null<MDNode>(T->getOperand(0)))
|
|
return DIArray(A);
|
|
return DIArray();
|
|
}
|
|
|
|
StringRef DIScope::getFilename() const {
|
|
if (!DbgNode)
|
|
return StringRef();
|
|
if (isLexicalBlockFile())
|
|
return DILexicalBlockFile(DbgNode).getFilename();
|
|
if (isLexicalBlock())
|
|
return DILexicalBlock(DbgNode).getFilename();
|
|
if (isSubprogram())
|
|
return DISubprogram(DbgNode).getFilename();
|
|
if (isCompileUnit())
|
|
return DICompileUnit(DbgNode).getFilename();
|
|
if (isNameSpace())
|
|
return DINameSpace(DbgNode).getFilename();
|
|
if (isType())
|
|
return DIType(DbgNode).getFilename();
|
|
if (isFile())
|
|
return DIFile(DbgNode).getFilename();
|
|
llvm_unreachable("Invalid DIScope!");
|
|
}
|
|
|
|
StringRef DIScope::getDirectory() const {
|
|
if (!DbgNode)
|
|
return StringRef();
|
|
if (isLexicalBlockFile())
|
|
return DILexicalBlockFile(DbgNode).getDirectory();
|
|
if (isLexicalBlock())
|
|
return DILexicalBlock(DbgNode).getDirectory();
|
|
if (isSubprogram())
|
|
return DISubprogram(DbgNode).getDirectory();
|
|
if (isCompileUnit())
|
|
return DICompileUnit(DbgNode).getDirectory();
|
|
if (isNameSpace())
|
|
return DINameSpace(DbgNode).getDirectory();
|
|
if (isType())
|
|
return DIType(DbgNode).getDirectory();
|
|
if (isFile())
|
|
return DIFile(DbgNode).getDirectory();
|
|
llvm_unreachable("Invalid DIScope!");
|
|
}
|
|
|
|
DIArray DICompileUnit::getEnumTypes() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 14)
|
|
return DIArray();
|
|
|
|
if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(10)))
|
|
if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
|
|
return DIArray(A);
|
|
return DIArray();
|
|
}
|
|
|
|
DIArray DICompileUnit::getRetainedTypes() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 14)
|
|
return DIArray();
|
|
|
|
if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(11)))
|
|
if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
|
|
return DIArray(A);
|
|
return DIArray();
|
|
}
|
|
|
|
DIArray DICompileUnit::getSubprograms() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 14)
|
|
return DIArray();
|
|
|
|
if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(12)))
|
|
if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
|
|
return DIArray(A);
|
|
return DIArray();
|
|
}
|
|
|
|
|
|
DIArray DICompileUnit::getGlobalVariables() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 14)
|
|
return DIArray();
|
|
|
|
if (MDNode *N = dyn_cast_or_null<MDNode>(DbgNode->getOperand(13)))
|
|
if (MDNode *A = dyn_cast_or_null<MDNode>(N->getOperand(0)))
|
|
return DIArray(A);
|
|
return DIArray();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIDescriptor: vtable anchors for all descriptors.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void DIScope::anchor() { }
|
|
|
|
void DICompileUnit::anchor() { }
|
|
|
|
void DIFile::anchor() { }
|
|
|
|
void DIType::anchor() { }
|
|
|
|
void DIBasicType::anchor() { }
|
|
|
|
void DIDerivedType::anchor() { }
|
|
|
|
void DICompositeType::anchor() { }
|
|
|
|
void DISubprogram::anchor() { }
|
|
|
|
void DILexicalBlock::anchor() { }
|
|
|
|
void DINameSpace::anchor() { }
|
|
|
|
void DILexicalBlockFile::anchor() { }
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIDescriptor: dump routines for all descriptors.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
/// print - Print descriptor.
|
|
void DIDescriptor::print(raw_ostream &OS) const {
|
|
OS << "[" << dwarf::TagString(getTag()) << "] ";
|
|
OS.write_hex((intptr_t) &*DbgNode) << ']';
|
|
}
|
|
|
|
/// print - Print compile unit.
|
|
void DICompileUnit::print(raw_ostream &OS) const {
|
|
if (getLanguage())
|
|
OS << " [" << dwarf::LanguageString(getLanguage()) << "] ";
|
|
|
|
OS << " [" << getDirectory() << "/" << getFilename() << "]";
|
|
}
|
|
|
|
/// print - Print type.
|
|
void DIType::print(raw_ostream &OS) const {
|
|
if (!DbgNode) return;
|
|
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << "] ";
|
|
|
|
unsigned Tag = getTag();
|
|
OS << " [" << dwarf::TagString(Tag) << "] ";
|
|
|
|
// TODO : Print context
|
|
OS << " ["
|
|
<< "line " << getLineNumber() << ", "
|
|
<< getSizeInBits() << " bits, "
|
|
<< getAlignInBits() << " bit alignment, "
|
|
<< getOffsetInBits() << " bit offset"
|
|
<< "] ";
|
|
|
|
if (isPrivate())
|
|
OS << " [private] ";
|
|
else if (isProtected())
|
|
OS << " [protected] ";
|
|
|
|
if (isForwardDecl())
|
|
OS << " [fwd] ";
|
|
|
|
if (isBasicType())
|
|
DIBasicType(DbgNode).print(OS);
|
|
else if (isDerivedType()) {
|
|
DIDerivedType DTy = DIDerivedType(DbgNode);
|
|
DTy.print(OS);
|
|
DICompositeType CTy = getDICompositeType(DTy);
|
|
if (CTy.Verify())
|
|
CTy.print(OS);
|
|
}
|
|
else if (isCompositeType())
|
|
DICompositeType(DbgNode).print(OS);
|
|
else {
|
|
OS << "Invalid DIType\n";
|
|
return;
|
|
}
|
|
|
|
OS << "\n";
|
|
}
|
|
|
|
/// print - Print basic type.
|
|
void DIBasicType::print(raw_ostream &OS) const {
|
|
OS << " [" << dwarf::AttributeEncodingString(getEncoding()) << "] ";
|
|
}
|
|
|
|
/// print - Print derived type.
|
|
void DIDerivedType::print(raw_ostream &OS) const {
|
|
OS << "\n\t Derived From: ";
|
|
getTypeDerivedFrom().print(OS);
|
|
OS << "\n\t";
|
|
}
|
|
|
|
/// print - Print composite type.
|
|
void DICompositeType::print(raw_ostream &OS) const {
|
|
DIArray A = getTypeArray();
|
|
OS << " [" << A.getNumElements() << " elements]";
|
|
}
|
|
|
|
/// print - Print subprogram.
|
|
void DISubprogram::print(raw_ostream &OS) const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << "] ";
|
|
|
|
unsigned Tag = getTag();
|
|
OS << " [" << dwarf::TagString(Tag) << "] ";
|
|
|
|
// TODO : Print context
|
|
OS << " [" << getLineNumber() << "] ";
|
|
|
|
if (isLocalToUnit())
|
|
OS << " [local] ";
|
|
|
|
if (isDefinition())
|
|
OS << " [def] ";
|
|
|
|
if (getScopeLineNumber() != getLineNumber())
|
|
OS << " [Scope: " << getScopeLineNumber() << "] ";
|
|
|
|
OS << "\n";
|
|
}
|
|
|
|
/// print - Print global variable.
|
|
void DIGlobalVariable::print(raw_ostream &OS) const {
|
|
OS << " [";
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << "] ";
|
|
|
|
unsigned Tag = getTag();
|
|
OS << " [" << dwarf::TagString(Tag) << "] ";
|
|
|
|
// TODO : Print context
|
|
OS << " [" << getLineNumber() << "] ";
|
|
|
|
if (isLocalToUnit())
|
|
OS << " [local] ";
|
|
|
|
if (isDefinition())
|
|
OS << " [def] ";
|
|
|
|
if (isGlobalVariable())
|
|
DIGlobalVariable(DbgNode).print(OS);
|
|
OS << "]\n";
|
|
}
|
|
|
|
static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS,
|
|
const LLVMContext &Ctx) {
|
|
if (!DL.isUnknown()) { // Print source line info.
|
|
DIScope Scope(DL.getScope(Ctx));
|
|
// Omit the directory, because it's likely to be long and uninteresting.
|
|
if (Scope.Verify())
|
|
CommentOS << Scope.getFilename();
|
|
else
|
|
CommentOS << "<unknown>";
|
|
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 << "]";
|
|
}
|
|
}
|
|
}
|
|
|
|
/// print - Print variable.
|
|
void DIVariable::print(raw_ostream &OS) const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << "] ";
|
|
|
|
OS << " [" << getLineNumber() << "] ";
|
|
getType().print(OS);
|
|
OS << "\n";
|
|
|
|
// FIXME: Dump complex addresses
|
|
}
|
|
|
|
/// dump - Print descriptor to dbgs() with a newline.
|
|
void DIDescriptor::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print compile unit to dbgs() with a newline.
|
|
void DICompileUnit::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print type to dbgs() with a newline.
|
|
void DIType::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print basic type to dbgs() with a newline.
|
|
void DIBasicType::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print derived type to dbgs() with a newline.
|
|
void DIDerivedType::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print composite type to dbgs() with a newline.
|
|
void DICompositeType::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print subprogram to dbgs() with a newline.
|
|
void DISubprogram::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print global variable.
|
|
void DIGlobalVariable::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// dump - Print variable.
|
|
void DIVariable::dump() const {
|
|
print(dbgs()); dbgs() << '\n';
|
|
}
|
|
|
|
/// fixupObjcLikeName - Replace contains special characters used
|
|
/// in a typical Objective-C names with '.' in a given string.
|
|
static void fixupObjcLikeName(StringRef Str, SmallVectorImpl<char> &Out) {
|
|
bool isObjCLike = false;
|
|
for (size_t i = 0, e = Str.size(); i < e; ++i) {
|
|
char C = Str[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 = StringRef("llvm.dbg.lv.");
|
|
StringRef FName = "fn";
|
|
if (Fn.getFunction())
|
|
FName = Fn.getFunction()->getName();
|
|
else
|
|
FName = Fn.getName();
|
|
char One = '\1';
|
|
if (FName.startswith(StringRef(&One, 1)))
|
|
FName = FName.substr(1);
|
|
fixupObjcLikeName(FName, Name);
|
|
return M.getNamedMetadata(Name.str());
|
|
}
|
|
|
|
/// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
|
|
/// to hold function specific information.
|
|
NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) {
|
|
SmallString<32> Name = StringRef("llvm.dbg.lv.");
|
|
StringRef FName = "fn";
|
|
if (Fn.getFunction())
|
|
FName = Fn.getFunction()->getName();
|
|
else
|
|
FName = Fn.getName();
|
|
char One = '\1';
|
|
if (FName.startswith(StringRef(&One, 1)))
|
|
FName = FName.substr(1);
|
|
fixupObjcLikeName(FName, Name);
|
|
|
|
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(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext))):
|
|
Elts.push_back(DV->getOperand(i));
|
|
return DIVariable(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DebugInfoFinder implementations.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// processModule - Process entire module and collect debug info.
|
|
void DebugInfoFinder::processModule(Module &M) {
|
|
if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
|
|
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
|
|
DICompileUnit CU(CU_Nodes->getOperand(i));
|
|
addCompileUnit(CU);
|
|
if (CU.getVersion() > LLVMDebugVersion10) {
|
|
DIArray GVs = CU.getGlobalVariables();
|
|
for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) {
|
|
DIGlobalVariable DIG(GVs.getElement(i));
|
|
if (addGlobalVariable(DIG))
|
|
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)));
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
|
|
for (Function::iterator FI = (*I).begin(), FE = (*I).end(); FI != FE; ++FI)
|
|
for (BasicBlock::iterator BI = (*FI).begin(), BE = (*FI).end(); BI != BE;
|
|
++BI) {
|
|
if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
|
|
processDeclare(DDI);
|
|
|
|
DebugLoc Loc = BI->getDebugLoc();
|
|
if (Loc.isUnknown())
|
|
continue;
|
|
|
|
LLVMContext &Ctx = BI->getContext();
|
|
DIDescriptor Scope(Loc.getScope(Ctx));
|
|
|
|
if (Scope.isCompileUnit())
|
|
addCompileUnit(DICompileUnit(Scope));
|
|
else if (Scope.isSubprogram())
|
|
processSubprogram(DISubprogram(Scope));
|
|
else if (Scope.isLexicalBlockFile()) {
|
|
DILexicalBlockFile DBF = DILexicalBlockFile(Scope);
|
|
processLexicalBlock(DILexicalBlock(DBF.getScope()));
|
|
}
|
|
else if (Scope.isLexicalBlock())
|
|
processLexicalBlock(DILexicalBlock(Scope));
|
|
|
|
if (MDNode *IA = Loc.getInlinedAt(Ctx))
|
|
processLocation(DILocation(IA));
|
|
}
|
|
|
|
if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv")) {
|
|
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
|
|
DIGlobalVariable DIG(cast<MDNode>(NMD->getOperand(i)));
|
|
if (addGlobalVariable(DIG)) {
|
|
if (DIG.getVersion() <= LLVMDebugVersion10)
|
|
addCompileUnit(DIG.getCompileUnit());
|
|
processType(DIG.getType());
|
|
}
|
|
}
|
|
}
|
|
|
|
if (NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.sp"))
|
|
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i)
|
|
processSubprogram(DISubprogram(NMD->getOperand(i)));
|
|
}
|
|
|
|
/// processLocation - Process DILocation.
|
|
void DebugInfoFinder::processLocation(DILocation Loc) {
|
|
if (!Loc.Verify()) return;
|
|
DIDescriptor S(Loc.getScope());
|
|
if (S.isCompileUnit())
|
|
addCompileUnit(DICompileUnit(S));
|
|
else if (S.isSubprogram())
|
|
processSubprogram(DISubprogram(S));
|
|
else if (S.isLexicalBlock())
|
|
processLexicalBlock(DILexicalBlock(S));
|
|
else if (S.isLexicalBlockFile()) {
|
|
DILexicalBlockFile DBF = DILexicalBlockFile(S);
|
|
processLexicalBlock(DILexicalBlock(DBF.getScope()));
|
|
}
|
|
processLocation(Loc.getOrigLocation());
|
|
}
|
|
|
|
/// processType - Process DIType.
|
|
void DebugInfoFinder::processType(DIType DT) {
|
|
if (!addType(DT))
|
|
return;
|
|
if (DT.getVersion() <= LLVMDebugVersion10)
|
|
addCompileUnit(DT.getCompileUnit());
|
|
if (DT.isCompositeType()) {
|
|
DICompositeType DCT(DT);
|
|
processType(DCT.getTypeDerivedFrom());
|
|
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());
|
|
}
|
|
}
|
|
|
|
/// 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;
|
|
if (SP.getVersion() <= LLVMDebugVersion10)
|
|
addCompileUnit(SP.getCompileUnit());
|
|
processType(SP.getType());
|
|
}
|
|
|
|
/// processDeclare - Process DbgDeclareInst.
|
|
void DebugInfoFinder::processDeclare(DbgDeclareInst *DDI) {
|
|
MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
|
|
if (!N) return;
|
|
|
|
DIDescriptor DV(N);
|
|
if (!DV.isVariable())
|
|
return;
|
|
|
|
if (!NodesSeen.insert(DV))
|
|
return;
|
|
if (DIVariable(N).getVersion() <= LLVMDebugVersion10)
|
|
addCompileUnit(DIVariable(N).getCompileUnit());
|
|
processType(DIVariable(N).getType());
|
|
}
|
|
|
|
/// addType - Add type into Tys.
|
|
bool DebugInfoFinder::addType(DIType DT) {
|
|
if (!DT.isValid())
|
|
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.Verify())
|
|
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 (!DIDescriptor(DIG).isGlobalVariable())
|
|
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 (!DIDescriptor(SP).isSubprogram())
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(SP))
|
|
return false;
|
|
|
|
SPs.push_back(SP);
|
|
return true;
|
|
}
|
|
|
|
/// 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())
|
|
return getDICompositeType(DIDerivedType(T).getTypeDerivedFrom());
|
|
|
|
return DICompositeType();
|
|
}
|
|
|
|
/// isSubprogramContext - Return true if Context is either a subprogram
|
|
/// or another context nested inside a subprogram.
|
|
bool llvm::isSubprogramContext(const MDNode *Context) {
|
|
if (!Context)
|
|
return false;
|
|
DIDescriptor D(Context);
|
|
if (D.isSubprogram())
|
|
return true;
|
|
if (D.isType())
|
|
return isSubprogramContext(DIType(Context).getContext());
|
|
return false;
|
|
}
|
|
|