#define DEBUG_TYPE "dwarfdebug"
#include "DwarfDebug.h"
#include "DIE.h"
+#include "DwarfAccelTable.h"
#include "DwarfCompileUnit.h"
#include "llvm/Constants.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/DIBuilder.h"
#include "llvm/Module.h"
#include "llvm/Instructions.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Target/TargetOptions.h"
-#include "llvm/Analysis/DebugInfo.h"
-#include "llvm/Analysis/DIBuilder.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
cl::desc("Make an absence of debug location information explicit."),
cl::init(false));
+namespace {
+ enum DefaultOnOff {
+ Default, Enable, Disable
+ };
+}
+
+static cl::opt<DefaultOnOff> DwarfAccelTables("dwarf-accel-tables", cl::Hidden,
+ cl::desc("Output prototype dwarf accelerator tables."),
+ cl::values(
+ clEnumVal(Default, "Default for platform"),
+ clEnumVal(Enable, "Enabled"),
+ clEnumVal(Disable, "Disabled"),
+ clEnumValEnd),
+ cl::init(Default));
+
+static cl::opt<DefaultOnOff> DarwinGDBCompat("darwin-gdb-compat", cl::Hidden,
+ cl::desc("Compatibility with Darwin gdb."),
+ cl::values(
+ clEnumVal(Default, "Default for platform"),
+ clEnumVal(Enable, "Enabled"),
+ clEnumVal(Disable, "Disabled"),
+ clEnumValEnd),
+ cl::init(Default));
+
namespace {
const char *DWARFGroupName = "DWARF Emission";
const char *DbgTimerName = "DWARF Debug Writer";
if (getName() == DT.getName())
return (DT.getTypeDerivedFrom());
}
- return Ty;
}
return Ty;
}
DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
: Asm(A), MMI(Asm->MMI), FirstCU(0),
AbbreviationsSet(InitAbbreviationsSetSize),
+ SourceIdMap(DIEValueAllocator), StringPool(DIEValueAllocator),
PrevLabel(NULL) {
NextStringPoolNumber = 0;
DwarfStrSectionSym = TextSectionSym = 0;
DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = 0;
FunctionBeginSym = FunctionEndSym = 0;
+
+ // Turn on accelerator tables and older gdb compatibility
+ // for Darwin.
+ bool isDarwin = Triple(M->getTargetTriple()).isOSDarwin();
+ if (DarwinGDBCompat == Default) {
+ if (isDarwin)
+ isDarwinGDBCompat = true;
+ else
+ isDarwinGDBCompat = false;
+ } else
+ isDarwinGDBCompat = DarwinGDBCompat == Enable ? true : false;
+
+ if (DwarfAccelTables == Default) {
+ if (isDarwin)
+ hasDwarfAccelTables = true;
+ else
+ hasDwarfAccelTables = false;
+ } else
+ hasDwarfAccelTables = DwarfAccelTables == Enable ? true : false;
+
{
NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
beginModule(M);
DwarfDebug::~DwarfDebug() {
}
+/// EmitSectionSym - Switch to the specified MCSection and emit an assembler
+/// temporary label to it if SymbolStem is specified.
+static MCSymbol *EmitSectionSym(AsmPrinter *Asm, const MCSection *Section,
+ const char *SymbolStem = 0) {
+ Asm->OutStreamer.SwitchSection(Section);
+ if (!SymbolStem) return 0;
+
+ MCSymbol *TmpSym = Asm->GetTempSymbol(SymbolStem);
+ Asm->OutStreamer.EmitLabel(TmpSym);
+ return TmpSym;
+}
+
+MCSymbol *DwarfDebug::getStringPool() {
+ return Asm->GetTempSymbol("section_str");
+}
+
MCSymbol *DwarfDebug::getStringPoolEntry(StringRef Str) {
std::pair<MCSymbol*, unsigned> &Entry = StringPool[Str];
if (Entry.first) return Entry.first;
return Entry.first = Asm->GetTempSymbol("string", Entry.second);
}
-
/// assignAbbrevNumber - Define a unique number for the abbreviation.
///
void DwarfDebug::assignAbbrevNumber(DIEAbbrev &Abbrev) {
return LinkageName;
}
-/// createSubprogramDIE - Create new DIE using SP.
-DIE *DwarfDebug::createSubprogramDIE(DISubprogram SP) {
- CompileUnit *SPCU = getCompileUnit(SP);
- DIE *SPDie = SPCU->getDIE(SP);
- if (SPDie)
- return SPDie;
-
- SPDie = new DIE(dwarf::DW_TAG_subprogram);
-
- // DW_TAG_inlined_subroutine may refer to this DIE.
- SPCU->insertDIE(SP, SPDie);
-
- // Add to context owner.
- SPCU->addToContextOwner(SPDie, SP.getContext());
-
- // Add function template parameters.
- SPCU->addTemplateParams(*SPDie, SP.getTemplateParams());
-
- StringRef LinkageName = SP.getLinkageName();
- if (!LinkageName.empty())
- SPCU->addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
- dwarf::DW_FORM_string,
- getRealLinkageName(LinkageName));
-
- // If this DIE is going to refer declaration info using AT_specification
- // then there is no need to add other attributes.
- if (SP.getFunctionDeclaration().isSubprogram())
- return SPDie;
-
- // Constructors and operators for anonymous aggregates do not have names.
- if (!SP.getName().empty())
- SPCU->addString(SPDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
- SP.getName());
-
- SPCU->addSourceLine(SPDie, SP);
-
- if (SP.isPrototyped())
- SPCU->addUInt(SPDie, dwarf::DW_AT_prototyped, dwarf::DW_FORM_flag, 1);
+static bool isObjCClass(StringRef Name) {
+ return Name.startswith("+") || Name.startswith("-");
+}
- // Add Return Type.
- DICompositeType SPTy = SP.getType();
- DIArray Args = SPTy.getTypeArray();
- unsigned SPTag = SPTy.getTag();
+static bool hasObjCCategory(StringRef Name) {
+ if (!isObjCClass(Name)) return false;
- if (Args.getNumElements() == 0 || SPTag != dwarf::DW_TAG_subroutine_type)
- SPCU->addType(SPDie, SPTy);
- else
- SPCU->addType(SPDie, DIType(Args.getElement(0)));
-
- unsigned VK = SP.getVirtuality();
- if (VK) {
- SPCU->addUInt(SPDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_flag, VK);
- DIEBlock *Block = SPCU->getDIEBlock();
- SPCU->addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
- SPCU->addUInt(Block, 0, dwarf::DW_FORM_udata, SP.getVirtualIndex());
- SPCU->addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, 0, Block);
- ContainingTypeMap.insert(std::make_pair(SPDie,
- SP.getContainingType()));
+ size_t pos = Name.find(')');
+ if (pos != std::string::npos) {
+ if (Name[pos+1] != ' ') return false;
+ return true;
}
+ return false;
+}
- if (!SP.isDefinition()) {
- SPCU->addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
-
- // Add arguments. Do not add arguments for subprogram definition. They will
- // be handled while processing variables.
- DICompositeType SPTy = SP.getType();
- DIArray Args = SPTy.getTypeArray();
- unsigned SPTag = SPTy.getTag();
-
- if (SPTag == dwarf::DW_TAG_subroutine_type)
- for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
- DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
- DIType ATy = DIType(DIType(Args.getElement(i)));
- SPCU->addType(Arg, ATy);
- if (ATy.isArtificial())
- SPCU->addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
- SPDie->addChild(Arg);
- }
+static void getObjCClassCategory(StringRef In, StringRef &Class,
+ StringRef &Category) {
+ if (!hasObjCCategory(In)) {
+ Class = In.slice(In.find('[') + 1, In.find(' '));
+ Category = "";
+ return;
}
- if (SP.isArtificial())
- SPCU->addUInt(SPDie, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
-
- if (!SP.isLocalToUnit())
- SPCU->addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
-
- if (SP.isOptimized())
- SPCU->addUInt(SPDie, dwarf::DW_AT_APPLE_optimized, dwarf::DW_FORM_flag, 1);
-
- if (unsigned isa = Asm->getISAEncoding()) {
- SPCU->addUInt(SPDie, dwarf::DW_AT_APPLE_isa, dwarf::DW_FORM_flag, isa);
- }
+ Class = In.slice(In.find('[') + 1, In.find('('));
+ Category = In.slice(In.find('[') + 1, In.find(' '));
+ return;
+}
- return SPDie;
+static StringRef getObjCMethodName(StringRef In) {
+ return In.slice(In.find(' ') + 1, In.find(']'));
}
-/// isSubprogramContext - Return true if Context is either a subprogram
-/// or another context nested inside a subprogram.
-static bool 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;
+// Add the various names to the Dwarf accelerator table names.
+static void addSubprogramNames(CompileUnit *TheCU, DISubprogram SP,
+ DIE* Die) {
+ if (!SP.isDefinition()) return;
+
+ TheCU->addAccelName(SP.getName(), Die);
+
+ // If the linkage name is different than the name, go ahead and output
+ // that as well into the name table.
+ if (SP.getLinkageName() != "" && SP.getName() != SP.getLinkageName())
+ TheCU->addAccelName(SP.getLinkageName(), Die);
+
+ // If this is an Objective-C selector name add it to the ObjC accelerator
+ // too.
+ if (isObjCClass(SP.getName())) {
+ StringRef Class, Category;
+ getObjCClassCategory(SP.getName(), Class, Category);
+ TheCU->addAccelObjC(Class, Die);
+ if (Category != "")
+ TheCU->addAccelObjC(Category, Die);
+ // Also add the base method name to the name table.
+ TheCU->addAccelName(getObjCMethodName(SP.getName()), Die);
+ }
}
/// updateSubprogramScopeDIE - Find DIE for the given subprogram and
/// attach appropriate DW_AT_low_pc and DW_AT_high_pc attributes.
/// If there are global variables in this scope then create and insert
/// DIEs for these variables.
-DIE *DwarfDebug::updateSubprogramScopeDIE(const MDNode *SPNode) {
- CompileUnit *SPCU = getCompileUnit(SPNode);
+DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU,
+ const MDNode *SPNode) {
DIE *SPDie = SPCU->getDIE(SPNode);
assert(SPDie && "Unable to find subprogram DIE!");
DISubprogram SP(SPNode);
DISubprogram SPDecl = SP.getFunctionDeclaration();
- if (SPDecl.isSubprogram())
- // Refer function declaration directly.
- SPCU->addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
- createSubprogramDIE(SPDecl));
- else {
+ if (!SPDecl.isSubprogram()) {
// There is not any need to generate specification DIE for a function
// defined at compile unit level. If a function is defined inside another
// function then gdb prefers the definition at top level and but does not
if (SP.isDefinition() && !SP.getContext().isCompileUnit() &&
!SP.getContext().isFile() &&
!isSubprogramContext(SP.getContext())) {
- SPCU-> addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
+ SPCU->addFlag(SPDie, dwarf::DW_AT_declaration);
// Add arguments.
DICompositeType SPTy = SP.getType();
if (SPTag == dwarf::DW_TAG_subroutine_type)
for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
DIE *Arg = new DIE(dwarf::DW_TAG_formal_parameter);
- DIType ATy = DIType(DIType(Args.getElement(i)));
+ DIType ATy = DIType(Args.getElement(i));
SPCU->addType(Arg, ATy);
if (ATy.isArtificial())
- SPCU->addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
+ SPCU->addFlag(Arg, dwarf::DW_AT_artificial);
+ if (ATy.isObjectPointer())
+ SPCU->addDIEEntry(SPDie, dwarf::DW_AT_object_pointer,
+ dwarf::DW_FORM_ref4, Arg);
SPDie->addChild(Arg);
}
DIE *SPDeclDie = SPDie;
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
SPCU->addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
+ // Add name to the name table, we do this here because we're guaranteed
+ // to have concrete versions of our DW_TAG_subprogram nodes.
+ addSubprogramNames(SPCU, SP, SPDie);
+
return SPDie;
}
/// constructLexicalScope - Construct new DW_TAG_lexical_block
/// for this scope and attach DW_AT_low_pc/DW_AT_high_pc labels.
-DIE *DwarfDebug::constructLexicalScopeDIE(LexicalScope *Scope) {
-
+DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
+ LexicalScope *Scope) {
DIE *ScopeDIE = new DIE(dwarf::DW_TAG_lexical_block);
if (Scope->isAbstractScope())
return ScopeDIE;
if (Ranges.empty())
return 0;
- CompileUnit *TheCU = getCompileUnit(Scope->getScopeNode());
SmallVector<InsnRange, 4>::const_iterator RI = Ranges.begin();
if (Ranges.size() > 1) {
// .debug_range section has not been laid out yet. Emit offset in
/// constructInlinedScopeDIE - This scope represents inlined body of
/// a function. Construct DIE to represent this concrete inlined copy
/// of the function.
-DIE *DwarfDebug::constructInlinedScopeDIE(LexicalScope *Scope) {
-
+DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
+ LexicalScope *Scope) {
const SmallVector<InsnRange, 4> &Ranges = Scope->getRanges();
- assert (Ranges.empty() == false
- && "LexicalScope does not have instruction markers!");
+ assert(Ranges.empty() == false &&
+ "LexicalScope does not have instruction markers!");
if (!Scope->getScopeNode())
return NULL;
DIScope DS(Scope->getScopeNode());
DISubprogram InlinedSP = getDISubprogram(DS);
- CompileUnit *TheCU = getCompileUnit(InlinedSP);
DIE *OriginDIE = TheCU->getDIE(InlinedSP);
if (!OriginDIE) {
DEBUG(dbgs() << "Unable to find original DIE for inlined subprogram.");
const MCSymbol *EndLabel = getLabelAfterInsn(RI->second);
if (StartLabel == 0 || EndLabel == 0) {
- assert (0 && "Unexpected Start and End labels for a inlined scope!");
- return 0;
+ llvm_unreachable("Unexpected Start and End labels for a inlined scope!");
}
assert(StartLabel->isDefined() &&
"Invalid starting label for an inlined scope!");
I = InlineInfo.find(InlinedSP);
if (I == InlineInfo.end()) {
- InlineInfo[InlinedSP].push_back(std::make_pair(StartLabel,
- ScopeDIE));
+ InlineInfo[InlinedSP].push_back(std::make_pair(StartLabel, ScopeDIE));
InlinedSPNodes.push_back(InlinedSP);
} else
I->second.push_back(std::make_pair(StartLabel, ScopeDIE));
DILocation DL(Scope->getInlinedAt());
- TheCU->addUInt(ScopeDIE, dwarf::DW_AT_call_file, 0, TheCU->getID());
+ TheCU->addUInt(ScopeDIE, dwarf::DW_AT_call_file, 0,
+ GetOrCreateSourceID(DL.getFilename(), DL.getDirectory()));
TheCU->addUInt(ScopeDIE, dwarf::DW_AT_call_line, 0, DL.getLineNumber());
+ // Add name to the name table, we do this here because we're guaranteed
+ // to have concrete versions of our DW_TAG_inlined_subprogram nodes.
+ addSubprogramNames(TheCU, InlinedSP, ScopeDIE);
+
return ScopeDIE;
}
-/// isUnsignedDIType - Return true if type encoding is unsigned.
-static bool isUnsignedDIType(DIType Ty) {
- DIDerivedType DTy(Ty);
- if (DTy.Verify())
- return isUnsignedDIType(DTy.getTypeDerivedFrom());
-
- DIBasicType BTy(Ty);
- if (BTy.Verify()) {
- unsigned Encoding = BTy.getEncoding();
- if (Encoding == dwarf::DW_ATE_unsigned ||
- Encoding == dwarf::DW_ATE_unsigned_char)
- return true;
- }
- return false;
-}
-
-/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, LexicalScope *Scope) {
- StringRef Name = DV->getName();
- if (Name.empty())
- return NULL;
-
- // Translate tag to proper Dwarf tag. The result variable is dropped for
- // now.
- unsigned Tag;
- switch (DV->getTag()) {
- case dwarf::DW_TAG_return_variable:
- return NULL;
- case dwarf::DW_TAG_arg_variable:
- Tag = dwarf::DW_TAG_formal_parameter;
- break;
- case dwarf::DW_TAG_auto_variable: // fall thru
- default:
- Tag = dwarf::DW_TAG_variable;
- break;
- }
-
- // Define variable debug information entry.
- DIE *VariableDie = new DIE(Tag);
- CompileUnit *VariableCU = getCompileUnit(DV->getVariable());
- DIE *AbsDIE = NULL;
- DenseMap<const DbgVariable *, const DbgVariable *>::iterator
- V2AVI = VarToAbstractVarMap.find(DV);
- if (V2AVI != VarToAbstractVarMap.end())
- AbsDIE = V2AVI->second->getDIE();
-
- if (AbsDIE)
- VariableCU->addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin,
- dwarf::DW_FORM_ref4, AbsDIE);
- else {
- VariableCU->addString(VariableDie, dwarf::DW_AT_name, dwarf::DW_FORM_string,
- Name);
- VariableCU->addSourceLine(VariableDie, DV->getVariable());
-
- // Add variable type.
- VariableCU->addType(VariableDie, DV->getType());
- }
-
- if (Tag == dwarf::DW_TAG_formal_parameter && DV->getType().isArtificial())
- VariableCU->addUInt(VariableDie, dwarf::DW_AT_artificial,
- dwarf::DW_FORM_flag, 1);
- else if (DIVariable(DV->getVariable()).isArtificial())
- VariableCU->addUInt(VariableDie, dwarf::DW_AT_artificial,
- dwarf::DW_FORM_flag, 1);
-
- if (Scope->isAbstractScope()) {
- DV->setDIE(VariableDie);
- return VariableDie;
- }
-
- // Add variable address.
-
- unsigned Offset = DV->getDotDebugLocOffset();
- if (Offset != ~0U) {
- VariableCU->addLabel(VariableDie, dwarf::DW_AT_location,
- dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("debug_loc", Offset));
- DV->setDIE(VariableDie);
- UseDotDebugLocEntry.insert(VariableDie);
- return VariableDie;
- }
-
- // Check if variable is described by a DBG_VALUE instruction.
- DenseMap<const DbgVariable *, const MachineInstr *>::iterator DVI =
- DbgVariableToDbgInstMap.find(DV);
- if (DVI != DbgVariableToDbgInstMap.end()) {
- const MachineInstr *DVInsn = DVI->second;
- bool updated = false;
- if (DVInsn->getNumOperands() == 3) {
- if (DVInsn->getOperand(0).isReg()) {
- const MachineOperand RegOp = DVInsn->getOperand(0);
- const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
- if (DVInsn->getOperand(1).isImm() &&
- TRI->getFrameRegister(*Asm->MF) == RegOp.getReg()) {
- unsigned FrameReg = 0;
- const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
- int Offset =
- TFI->getFrameIndexReference(*Asm->MF,
- DVInsn->getOperand(1).getImm(),
- FrameReg);
- MachineLocation Location(FrameReg, Offset);
- VariableCU->addVariableAddress(DV, VariableDie, Location);
-
- } else if (RegOp.getReg())
- VariableCU->addVariableAddress(DV, VariableDie,
- MachineLocation(RegOp.getReg()));
- updated = true;
- }
- else if (DVInsn->getOperand(0).isImm())
- updated =
- VariableCU->addConstantValue(VariableDie, DVInsn->getOperand(0),
- DV->getType());
- else if (DVInsn->getOperand(0).isFPImm())
- updated =
- VariableCU->addConstantFPValue(VariableDie, DVInsn->getOperand(0));
- else if (DVInsn->getOperand(0).isCImm())
- updated =
- VariableCU->addConstantValue(VariableDie,
- DVInsn->getOperand(0).getCImm(),
- isUnsignedDIType(DV->getType()));
- } else {
- VariableCU->addVariableAddress(DV, VariableDie,
- Asm->getDebugValueLocation(DVInsn));
- updated = true;
- }
- if (!updated) {
- // If variableDie is not updated then DBG_VALUE instruction does not
- // have valid variable info.
- delete VariableDie;
- return NULL;
- }
- DV->setDIE(VariableDie);
- return VariableDie;
- }
-
- // .. else use frame index, if available.
- int FI = 0;
- if (findVariableFrameIndex(DV, &FI)) {
- unsigned FrameReg = 0;
- const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
- int Offset =
- TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
- MachineLocation Location(FrameReg, Offset);
- VariableCU->addVariableAddress(DV, VariableDie, Location);
- }
-
- DV->setDIE(VariableDie);
- return VariableDie;
-
-}
-
/// constructScopeDIE - Construct a DIE for this scope.
-DIE *DwarfDebug::constructScopeDIE(LexicalScope *Scope) {
+DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
if (!Scope || !Scope->getScopeNode())
return NULL;
- SmallVector <DIE *, 8> Children;
+ SmallVector<DIE *, 8> Children;
+ DIE *ObjectPointer = NULL;
// Collect arguments for current function.
if (LScopes.isCurrentFunctionScope(Scope))
for (unsigned i = 0, N = CurrentFnArguments.size(); i < N; ++i)
if (DbgVariable *ArgDV = CurrentFnArguments[i])
- if (DIE *Arg = constructVariableDIE(ArgDV, Scope))
+ if (DIE *Arg =
+ TheCU->constructVariableDIE(ArgDV, Scope->isAbstractScope())) {
Children.push_back(Arg);
+ if (ArgDV->isObjectPointer()) ObjectPointer = Arg;
+ }
- // Collect lexical scope childrens first.
+ // Collect lexical scope children first.
const SmallVector<DbgVariable *, 8> &Variables = ScopeVariables.lookup(Scope);
for (unsigned i = 0, N = Variables.size(); i < N; ++i)
- if (DIE *Variable = constructVariableDIE(Variables[i], Scope))
+ if (DIE *Variable =
+ TheCU->constructVariableDIE(Variables[i], Scope->isAbstractScope())) {
Children.push_back(Variable);
+ if (Variables[i]->isObjectPointer()) ObjectPointer = Variable;
+ }
const SmallVector<LexicalScope *, 4> &Scopes = Scope->getChildren();
for (unsigned j = 0, M = Scopes.size(); j < M; ++j)
- if (DIE *Nested = constructScopeDIE(Scopes[j]))
+ if (DIE *Nested = constructScopeDIE(TheCU, Scopes[j]))
Children.push_back(Nested);
DIScope DS(Scope->getScopeNode());
DIE *ScopeDIE = NULL;
if (Scope->getInlinedAt())
- ScopeDIE = constructInlinedScopeDIE(Scope);
+ ScopeDIE = constructInlinedScopeDIE(TheCU, Scope);
else if (DS.isSubprogram()) {
ProcessedSPNodes.insert(DS);
if (Scope->isAbstractScope()) {
- ScopeDIE = getCompileUnit(DS)->getDIE(DS);
+ ScopeDIE = TheCU->getDIE(DS);
// Note down abstract DIE.
if (ScopeDIE)
AbstractSPDies.insert(std::make_pair(DS, ScopeDIE));
}
else
- ScopeDIE = updateSubprogramScopeDIE(DS);
+ ScopeDIE = updateSubprogramScopeDIE(TheCU, DS);
}
else {
// There is no need to emit empty lexical block DIE.
if (Children.empty())
return NULL;
- ScopeDIE = constructLexicalScopeDIE(Scope);
+ ScopeDIE = constructLexicalScopeDIE(TheCU, Scope);
}
if (!ScopeDIE) return NULL;
E = Children.end(); I != E; ++I)
ScopeDIE->addChild(*I);
+ if (DS.isSubprogram() && ObjectPointer != NULL)
+ TheCU->addDIEEntry(ScopeDIE, dwarf::DW_AT_object_pointer,
+ dwarf::DW_FORM_ref4, ObjectPointer);
+
if (DS.isSubprogram())
- getCompileUnit(DS)->addPubTypes(DISubprogram(DS));
+ TheCU->addPubTypes(DISubprogram(DS));
- return ScopeDIE;
+ return ScopeDIE;
}
/// GetOrCreateSourceID - Look up the source id with the given directory and
/// source file names. If none currently exists, create a new id and insert it
/// in the SourceIds map. This can update DirectoryNames and SourceFileNames
/// maps as well.
-
unsigned DwarfDebug::GetOrCreateSourceID(StringRef FileName,
StringRef DirName) {
// If FE did not provide a file name, then assume stdin.
if (FileName.empty())
return GetOrCreateSourceID("<stdin>", StringRef());
- // MCStream expects full path name as filename.
- if (!DirName.empty() && !sys::path::is_absolute(FileName)) {
- SmallString<128> FullPathName = DirName;
- sys::path::append(FullPathName, FileName);
- // Here FullPathName will be copied into StringMap by GetOrCreateSourceID.
- return GetOrCreateSourceID(StringRef(FullPathName), StringRef());
- }
+ // TODO: this might not belong here. See if we can factor this better.
+ if (DirName == CompilationDir)
+ DirName = "";
+
+ unsigned SrcId = SourceIdMap.size()+1;
- StringMapEntry<unsigned> &Entry = SourceIdMap.GetOrCreateValue(FileName);
- if (Entry.getValue())
- return Entry.getValue();
+ // We look up the file/dir pair by concatenating them with a zero byte.
+ SmallString<128> NamePair;
+ NamePair += DirName;
+ NamePair += '\0'; // Zero bytes are not allowed in paths.
+ NamePair += FileName;
- unsigned SrcId = SourceIdMap.size();
- Entry.setValue(SrcId);
+ StringMapEntry<unsigned> &Ent = SourceIdMap.GetOrCreateValue(NamePair, SrcId);
+ if (Ent.getValue() != SrcId)
+ return Ent.getValue();
// Print out a .file directive to specify files for .loc directives.
- Asm->OutStreamer.EmitDwarfFileDirective(SrcId, Entry.getKey());
+ Asm->OutStreamer.EmitDwarfFileDirective(SrcId, DirName, FileName);
return SrcId;
}
/// constructCompileUnit - Create new CompileUnit for the given
/// metadata node with tag DW_TAG_compile_unit.
-void DwarfDebug::constructCompileUnit(const MDNode *N) {
+CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) {
DICompileUnit DIUnit(N);
StringRef FN = DIUnit.getFilename();
- StringRef Dir = DIUnit.getDirectory();
- unsigned ID = GetOrCreateSourceID(FN, Dir);
+ CompilationDir = DIUnit.getDirectory();
+ unsigned ID = GetOrCreateSourceID(FN, CompilationDir);
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
- CompileUnit *NewCU = new CompileUnit(ID, Die, Asm, this);
- NewCU->addString(Die, dwarf::DW_AT_producer, dwarf::DW_FORM_string,
- DIUnit.getProducer());
+ CompileUnit *NewCU = new CompileUnit(ID, DIUnit.getLanguage(), Die,
+ Asm, this);
+ NewCU->addString(Die, dwarf::DW_AT_producer, DIUnit.getProducer());
NewCU->addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
DIUnit.getLanguage());
- NewCU->addString(Die, dwarf::DW_AT_name, dwarf::DW_FORM_string, FN);
- // Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This
- // simplifies debug range entries.
- NewCU->addUInt(Die, dwarf::DW_AT_entry_pc, dwarf::DW_FORM_addr, 0);
+ NewCU->addString(Die, dwarf::DW_AT_name, FN);
+ // 2.17.1 requires that we use DW_AT_low_pc for a single entry point
+ // into an entity.
+ NewCU->addUInt(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, 0);
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
- if(Asm->MAI->doesDwarfRequireRelocationForSectionOffset())
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
Asm->GetTempSymbol("section_line"));
else
NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
- if (!Dir.empty())
- NewCU->addString(Die, dwarf::DW_AT_comp_dir, dwarf::DW_FORM_string, Dir);
+ if (!CompilationDir.empty())
+ NewCU->addString(Die, dwarf::DW_AT_comp_dir, CompilationDir);
if (DIUnit.isOptimized())
- NewCU->addUInt(Die, dwarf::DW_AT_APPLE_optimized, dwarf::DW_FORM_flag, 1);
+ NewCU->addFlag(Die, dwarf::DW_AT_APPLE_optimized);
StringRef Flags = DIUnit.getFlags();
if (!Flags.empty())
- NewCU->addString(Die, dwarf::DW_AT_APPLE_flags, dwarf::DW_FORM_string,
- Flags);
+ NewCU->addString(Die, dwarf::DW_AT_APPLE_flags, Flags);
- unsigned RVer = DIUnit.getRunTimeVersion();
- if (RVer)
+ if (unsigned RVer = DIUnit.getRunTimeVersion())
NewCU->addUInt(Die, dwarf::DW_AT_APPLE_major_runtime_vers,
dwarf::DW_FORM_data1, RVer);
if (!FirstCU)
FirstCU = NewCU;
CUMap.insert(std::make_pair(N, NewCU));
-}
-
-/// getCompileUnit - Get CompileUnit DIE.
-CompileUnit *DwarfDebug::getCompileUnit(const MDNode *N) const {
- assert (N && "Invalid DwarfDebug::getCompileUnit argument!");
- DIDescriptor D(N);
- const MDNode *CUNode = NULL;
- if (D.isCompileUnit())
- CUNode = N;
- else if (D.isSubprogram())
- CUNode = DISubprogram(N).getCompileUnit();
- else if (D.isType())
- CUNode = DIType(N).getCompileUnit();
- else if (D.isGlobalVariable())
- CUNode = DIGlobalVariable(N).getCompileUnit();
- else if (D.isVariable())
- CUNode = DIVariable(N).getCompileUnit();
- else if (D.isNameSpace())
- CUNode = DINameSpace(N).getCompileUnit();
- else if (D.isFile())
- CUNode = DIFile(N).getCompileUnit();
- else
- return FirstCU;
-
- DenseMap<const MDNode *, CompileUnit *>::const_iterator I
- = CUMap.find(CUNode);
- if (I == CUMap.end())
- return FirstCU;
- return I->second;
-}
-
-// Return const expression if value is a GEP to access merged global
-// constant. e.g.
-// i8* getelementptr ({ i8, i8, i8, i8 }* @_MergedGlobals, i32 0, i32 0)
-static const ConstantExpr *getMergedGlobalExpr(const Value *V) {
- const ConstantExpr *CE = dyn_cast_or_null<ConstantExpr>(V);
- if (!CE || CE->getNumOperands() != 3 ||
- CE->getOpcode() != Instruction::GetElementPtr)
- return NULL;
-
- // First operand points to a global struct.
- Value *Ptr = CE->getOperand(0);
- if (!isa<GlobalValue>(Ptr) ||
- !isa<StructType>(cast<PointerType>(Ptr->getType())->getElementType()))
- return NULL;
-
- // Second operand is zero.
- const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CE->getOperand(1));
- if (!CI || !CI->isZero())
- return NULL;
-
- // Third operand is offset.
- if (!isa<ConstantInt>(CE->getOperand(2)))
- return NULL;
-
- return CE;
-}
-
-/// constructGlobalVariableDIE - Construct global variable DIE.
-void DwarfDebug::constructGlobalVariableDIE(const MDNode *N) {
- DIGlobalVariable GV(N);
-
- // If debug information is malformed then ignore it.
- if (GV.Verify() == false)
- return;
-
- // Check for pre-existence.
- CompileUnit *TheCU = getCompileUnit(N);
- if (TheCU->getDIE(GV))
- return;
-
- DIType GTy = GV.getType();
- DIE *VariableDIE = new DIE(GV.getTag());
-
- bool isGlobalVariable = GV.getGlobal() != NULL;
-
- // Add name.
- TheCU->addString(VariableDIE, dwarf::DW_AT_name, dwarf::DW_FORM_string,
- GV.getDisplayName());
- StringRef LinkageName = GV.getLinkageName();
- if (!LinkageName.empty() && isGlobalVariable)
- TheCU->addString(VariableDIE, dwarf::DW_AT_MIPS_linkage_name,
- dwarf::DW_FORM_string,
- getRealLinkageName(LinkageName));
- // Add type.
- TheCU->addType(VariableDIE, GTy);
-
- // Add scoping info.
- if (!GV.isLocalToUnit()) {
- TheCU->addUInt(VariableDIE, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
- // Expose as global.
- TheCU->addGlobal(GV.getName(), VariableDIE);
- }
- // Add line number info.
- TheCU->addSourceLine(VariableDIE, GV);
- // Add to map.
- TheCU->insertDIE(N, VariableDIE);
- // Add to context owner.
- DIDescriptor GVContext = GV.getContext();
- TheCU->addToContextOwner(VariableDIE, GVContext);
- // Add location.
- if (isGlobalVariable) {
- DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- TheCU->addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- TheCU->addLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->Mang->getSymbol(GV.getGlobal()));
- // Do not create specification DIE if context is either compile unit
- // or a subprogram.
- if (GV.isDefinition() && !GVContext.isCompileUnit() &&
- !GVContext.isFile() && !isSubprogramContext(GVContext)) {
- // Create specification DIE.
- DIE *VariableSpecDIE = new DIE(dwarf::DW_TAG_variable);
- TheCU->addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification,
- dwarf::DW_FORM_ref4, VariableDIE);
- TheCU->addBlock(VariableSpecDIE, dwarf::DW_AT_location, 0, Block);
- TheCU->addUInt(VariableDIE, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag,
- 1);
- TheCU->addDie(VariableSpecDIE);
- } else {
- TheCU->addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
- }
- } else if (const ConstantInt *CI =
- dyn_cast_or_null<ConstantInt>(GV.getConstant()))
- TheCU->addConstantValue(VariableDIE, CI, isUnsignedDIType(GTy));
- else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
- // GV is a merged global.
- DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
- Value *Ptr = CE->getOperand(0);
- TheCU->addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
- TheCU->addLabel(Block, 0, dwarf::DW_FORM_udata,
- Asm->Mang->getSymbol(cast<GlobalValue>(Ptr)));
- TheCU->addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
- SmallVector<Value*, 3> Idx(CE->op_begin()+1, CE->op_end());
- TheCU->addUInt(Block, 0, dwarf::DW_FORM_udata,
- Asm->getTargetData().getIndexedOffset(Ptr->getType(), Idx));
- TheCU->addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
- TheCU->addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
- }
-
- return;
+ return NewCU;
}
/// construct SubprogramDIE - Construct subprogram DIE.
-void DwarfDebug::constructSubprogramDIE(const MDNode *N) {
- DISubprogram SP(N);
-
- // Check for pre-existence.
- CompileUnit *TheCU = getCompileUnit(N);
- if (TheCU->getDIE(N))
+void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
+ const MDNode *N) {
+ CompileUnit *&CURef = SPMap[N];
+ if (CURef)
return;
+ CURef = TheCU;
+ DISubprogram SP(N);
if (!SP.isDefinition())
// This is a method declaration which will be handled while constructing
// class type.
return;
- DIE *SubprogramDie = createSubprogramDIE(SP);
+ DIE *SubprogramDie = TheCU->getOrCreateSubprogramDIE(SP);
// Add to map.
TheCU->insertDIE(N, SubprogramDie);
// Add to context owner.
TheCU->addToContextOwner(SubprogramDie, SP.getContext());
- // Expose as global.
- TheCU->addGlobal(SP.getName(), SubprogramDie);
-
return;
}
+/// collectInfoFromNamedMDNodes - Collect debug info from named mdnodes such
+/// as llvm.dbg.enum and llvm.dbg.ty
+void DwarfDebug::collectInfoFromNamedMDNodes(Module *M) {
+ if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.sp"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ const MDNode *N = NMD->getOperand(i);
+ if (CompileUnit *CU = CUMap.lookup(DISubprogram(N).getCompileUnit()))
+ constructSubprogramDIE(CU, N);
+ }
+
+ if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.gv"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ const MDNode *N = NMD->getOperand(i);
+ if (CompileUnit *CU = CUMap.lookup(DIGlobalVariable(N).getCompileUnit()))
+ CU->createGlobalVariableDIE(N);
+ }
+
+ if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.enum"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ DIType Ty(NMD->getOperand(i));
+ if (CompileUnit *CU = CUMap.lookup(Ty.getCompileUnit()))
+ CU->getOrCreateTypeDIE(Ty);
+ }
+
+ if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.ty"))
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ DIType Ty(NMD->getOperand(i));
+ if (CompileUnit *CU = CUMap.lookup(Ty.getCompileUnit()))
+ CU->getOrCreateTypeDIE(Ty);
+ }
+}
+
+/// collectLegacyDebugInfo - Collect debug info using DebugInfoFinder.
+/// FIXME - Remove this when dragon-egg and llvm-gcc switch to DIBuilder.
+bool DwarfDebug::collectLegacyDebugInfo(Module *M) {
+ DebugInfoFinder DbgFinder;
+ DbgFinder.processModule(*M);
+
+ bool HasDebugInfo = false;
+ // Scan all the compile-units to see if there are any marked as the main
+ // unit. If not, we do not generate debug info.
+ for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
+ E = DbgFinder.compile_unit_end(); I != E; ++I) {
+ if (DICompileUnit(*I).isMain()) {
+ HasDebugInfo = true;
+ break;
+ }
+ }
+ if (!HasDebugInfo) return false;
+
+ // Create all the compile unit DIEs.
+ for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
+ E = DbgFinder.compile_unit_end(); I != E; ++I)
+ constructCompileUnit(*I);
+
+ // Create DIEs for each global variable.
+ for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
+ E = DbgFinder.global_variable_end(); I != E; ++I) {
+ const MDNode *N = *I;
+ if (CompileUnit *CU = CUMap.lookup(DIGlobalVariable(N).getCompileUnit()))
+ CU->createGlobalVariableDIE(N);
+ }
+
+ // Create DIEs for each subprogram.
+ for (DebugInfoFinder::iterator I = DbgFinder.subprogram_begin(),
+ E = DbgFinder.subprogram_end(); I != E; ++I) {
+ const MDNode *N = *I;
+ if (CompileUnit *CU = CUMap.lookup(DISubprogram(N).getCompileUnit()))
+ constructSubprogramDIE(CU, N);
+ }
+
+ return HasDebugInfo;
+}
+
/// beginModule - Emit all Dwarf sections that should come prior to the
/// content. Create global DIEs and emit initial debug info sections.
/// This is invoked by the target AsmPrinter.
// module using debug info finder to collect debug info.
NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu");
if (CU_Nodes) {
-
- NamedMDNode *GV_Nodes = M->getNamedMetadata("llvm.dbg.gv");
- NamedMDNode *SP_Nodes = M->getNamedMetadata("llvm.dbg.sp");
- if (!GV_Nodes && !SP_Nodes)
- // If there are not any global variables or any functions then
- // there is not any debug info in this module.
- return;
-
- for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i)
- constructCompileUnit(CU_Nodes->getOperand(i));
-
- if (GV_Nodes)
- for (unsigned i = 0, e = GV_Nodes->getNumOperands(); i != e; ++i)
- constructGlobalVariableDIE(GV_Nodes->getOperand(i));
-
- if (SP_Nodes)
- for (unsigned i = 0, e = SP_Nodes->getNumOperands(); i != e; ++i)
- constructSubprogramDIE(SP_Nodes->getOperand(i));
-
- } else {
-
- DebugInfoFinder DbgFinder;
- DbgFinder.processModule(*M);
-
- bool HasDebugInfo = false;
- // Scan all the compile-units to see if there are any marked as the main
- // unit. If not, we do not generate debug info.
- for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
- E = DbgFinder.compile_unit_end(); I != E; ++I) {
- if (DICompileUnit(*I).isMain()) {
- HasDebugInfo = true;
- break;
- }
+ for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
+ DICompileUnit CUNode(CU_Nodes->getOperand(i));
+ CompileUnit *CU = constructCompileUnit(CUNode);
+ DIArray GVs = CUNode.getGlobalVariables();
+ for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i)
+ CU->createGlobalVariableDIE(GVs.getElement(i));
+ DIArray SPs = CUNode.getSubprograms();
+ for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
+ constructSubprogramDIE(CU, SPs.getElement(i));
+ DIArray EnumTypes = CUNode.getEnumTypes();
+ for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
+ CU->getOrCreateTypeDIE(EnumTypes.getElement(i));
+ DIArray RetainedTypes = CUNode.getRetainedTypes();
+ for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
+ CU->getOrCreateTypeDIE(RetainedTypes.getElement(i));
}
- if (!HasDebugInfo) return;
-
- // Create all the compile unit DIEs.
- for (DebugInfoFinder::iterator I = DbgFinder.compile_unit_begin(),
- E = DbgFinder.compile_unit_end(); I != E; ++I)
- constructCompileUnit(*I);
-
- // Create DIEs for each global variable.
- for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
- E = DbgFinder.global_variable_end(); I != E; ++I)
- constructGlobalVariableDIE(*I);
-
- // Create DIEs for each subprogram.
- for (DebugInfoFinder::iterator I = DbgFinder.subprogram_begin(),
- E = DbgFinder.subprogram_end(); I != E; ++I)
- constructSubprogramDIE(*I);
- }
+ } else if (!collectLegacyDebugInfo(M))
+ return;
+
+ collectInfoFromNamedMDNodes(M);
// Tell MMI that we have debug info.
MMI->setDebugInfoAvailability(true);
// Emit initial sections.
EmitSectionLabels();
- //getOrCreateTypeDIE
- if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.enum"))
- for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
- DIType Ty(NMD->getOperand(i));
- getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
- }
-
- if (NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.ty"))
- for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
- DIType Ty(NMD->getOperand(i));
- getCompileUnit(Ty)->getOrCreateTypeDIE(Ty);
- }
-
// Prime section data.
SectionMap.insert(Asm->getObjFileLowering().getTextSection());
}
if (!FirstCU) return;
const Module *M = MMI->getModule();
DenseMap<const MDNode *, LexicalScope *> DeadFnScopeMap;
- if (NamedMDNode *AllSPs = M->getNamedMetadata("llvm.dbg.sp")) {
- for (unsigned SI = 0, SE = AllSPs->getNumOperands(); SI != SE; ++SI) {
- if (ProcessedSPNodes.count(AllSPs->getOperand(SI)) != 0) continue;
- DISubprogram SP(AllSPs->getOperand(SI));
- if (!SP.Verify()) continue;
-
- // Collect info for variables that were optimized out.
- if (!SP.isDefinition()) continue;
- StringRef FName = SP.getLinkageName();
- if (FName.empty())
- FName = SP.getName();
- NamedMDNode *NMD = getFnSpecificMDNode(*(MMI->getModule()), FName);
- if (!NMD) continue;
- unsigned E = NMD->getNumOperands();
- if (!E) continue;
- LexicalScope *Scope = new LexicalScope(NULL, DIDescriptor(SP), NULL,
- false);
- DeadFnScopeMap[SP] = Scope;
- SmallVector<DbgVariable *, 8> Variables;
- for (unsigned I = 0; I != E; ++I) {
- DIVariable DV(NMD->getOperand(I));
- if (!DV.Verify()) continue;
- Variables.push_back(new DbgVariable(DV));
- }
- // Construct subprogram DIE and add variables DIEs.
- constructSubprogramDIE(SP);
- DIE *ScopeDIE = getCompileUnit(SP)->getDIE(SP);
- for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
- if (DIE *VariableDIE = constructVariableDIE(Variables[i], Scope))
- ScopeDIE->addChild(VariableDIE);
+ // Collect info for variables that were optimized out.
+ if (NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu")) {
+ for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
+ DICompileUnit TheCU(CU_Nodes->getOperand(i));
+ DIArray Subprograms = TheCU.getSubprograms();
+ for (unsigned i = 0, e = Subprograms.getNumElements(); i != e; ++i) {
+ DISubprogram SP(Subprograms.getElement(i));
+ if (ProcessedSPNodes.count(SP) != 0) continue;
+ if (!SP.Verify()) continue;
+ if (!SP.isDefinition()) continue;
+ DIArray Variables = SP.getVariables();
+ if (Variables.getNumElements() == 0) continue;
+
+ LexicalScope *Scope =
+ new LexicalScope(NULL, DIDescriptor(SP), NULL, false);
+ DeadFnScopeMap[SP] = Scope;
+
+ // Construct subprogram DIE and add variables DIEs.
+ CompileUnit *SPCU = CUMap.lookup(TheCU);
+ assert(SPCU && "Unable to find Compile Unit!");
+ constructSubprogramDIE(SPCU, SP);
+ DIE *ScopeDIE = SPCU->getDIE(SP);
+ for (unsigned vi = 0, ve = Variables.getNumElements(); vi != ve; ++vi) {
+ DIVariable DV(Variables.getElement(vi));
+ if (!DV.Verify()) continue;
+ DbgVariable *NewVar = new DbgVariable(DV, NULL);
+ if (DIE *VariableDIE =
+ SPCU->constructVariableDIE(NewVar, Scope->isAbstractScope()))
+ ScopeDIE->addChild(VariableDIE);
+ }
}
}
}
DIE *ISP = *AI;
FirstCU->addUInt(ISP, dwarf::DW_AT_inline, 0, dwarf::DW_INL_inlined);
}
+ for (DenseMap<const MDNode *, DIE *>::iterator AI = AbstractSPDies.begin(),
+ AE = AbstractSPDies.end(); AI != AE; ++AI) {
+ DIE *ISP = AI->second;
+ if (InlinedSubprogramDIEs.count(ISP))
+ continue;
+ FirstCU->addUInt(ISP, dwarf::DW_AT_inline, 0, dwarf::DW_INL_inlined);
+ }
- for (DenseMap<DIE *, const MDNode *>::iterator CI = ContainingTypeMap.begin(),
- CE = ContainingTypeMap.end(); CI != CE; ++CI) {
- DIE *SPDie = CI->first;
- const MDNode *N = dyn_cast_or_null<MDNode>(CI->second);
- if (!N) continue;
- DIE *NDie = getCompileUnit(N)->getDIE(N);
- if (!NDie) continue;
- getCompileUnit(N)->addDIEEntry(SPDie, dwarf::DW_AT_containing_type,
- dwarf::DW_FORM_ref4, NDie);
+ // Emit DW_AT_containing_type attribute to connect types with their
+ // vtable holding type.
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator CUI = CUMap.begin(),
+ CUE = CUMap.end(); CUI != CUE; ++CUI) {
+ CompileUnit *TheCU = CUI->second;
+ TheCU->constructContainingTypeDIEs();
}
// Standard sections final addresses.
// Corresponding abbreviations into a abbrev section.
emitAbbreviations();
- // Emit info into a debug pubnames section.
- emitDebugPubNames();
-
+ // Emit info into the dwarf accelerator table sections.
+ if (useDwarfAccelTables()) {
+ emitAccelNames();
+ emitAccelObjC();
+ emitAccelNamespaces();
+ emitAccelTypes();
+ }
+
// Emit info into a debug pubtypes section.
- emitDebugPubTypes();
+ // TODO: When we don't need the option anymore we can
+ // remove all of the code that adds to the table.
+ if (useDarwinGDBCompat())
+ emitDebugPubTypes();
// Emit info into a debug loc section.
emitDebugLoc();
emitDebugMacInfo();
// Emit inline info.
- emitDebugInlineInfo();
+ // TODO: When we don't need the option anymore we
+ // can remove all of the code that this section
+ // depends upon.
+ if (useDarwinGDBCompat())
+ emitDebugInlineInfo();
// Emit info into a debug str section.
emitDebugStr();
// clean up.
DeleteContainerSeconds(DeadFnScopeMap);
+ SPMap.clear();
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I)
delete I->second;
if (!Scope)
return NULL;
- AbsDbgVariable = new DbgVariable(Var);
+ AbsDbgVariable = new DbgVariable(Var, NULL);
addScopeVariable(Scope, AbsDbgVariable);
AbstractVariables[Var] = AbsDbgVariable;
return AbsDbgVariable;
continue;
DbgVariable *AbsDbgVariable = findAbstractVariable(DV, VP.second);
- DbgVariable *RegVar = new DbgVariable(DV);
- recordVariableFrameIndex(RegVar, VP.first);
+ DbgVariable *RegVar = new DbgVariable(DV, AbsDbgVariable);
+ RegVar->setFrameIndex(VP.first);
if (!addCurrentFnArgument(MF, RegVar, Scope))
addScopeVariable(Scope, RegVar);
- if (AbsDbgVariable) {
- recordVariableFrameIndex(AbsDbgVariable, VP.first);
- VarToAbstractVarMap[RegVar] = AbsDbgVariable;
- }
+ if (AbsDbgVariable)
+ AbsDbgVariable->setFrameIndex(VP.first);
}
}
/// isDbgValueInDefinedReg - Return true if debug value, encoded by
/// DBG_VALUE instruction, is in a defined reg.
static bool isDbgValueInDefinedReg(const MachineInstr *MI) {
- assert (MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
+ assert(MI->isDebugValue() && "Invalid DBG_VALUE machine instruction!");
return MI->getNumOperands() == 3 &&
MI->getOperand(0).isReg() && MI->getOperand(0).getReg() &&
MI->getOperand(1).isImm() && MI->getOperand(1).getImm() == 0;
if (MI->getOperand(0).isCImm())
return DotDebugLocEntry(FLabel, SLabel, MI->getOperand(0).getCImm());
- assert (0 && "Unexpected 3 operand DBG_VALUE instruction!");
- return DotDebugLocEntry();
+ llvm_unreachable("Unexpected 3 operand DBG_VALUE instruction!");
}
/// collectVariableInfo - Find variables for each lexical scope.
Processed.insert(DV);
assert(MInsn->isDebugValue() && "History must begin with debug value");
- DbgVariable *RegVar = new DbgVariable(DV);
+ DbgVariable *AbsVar = findAbstractVariable(DV, MInsn->getDebugLoc());
+ DbgVariable *RegVar = new DbgVariable(DV, AbsVar);
if (!addCurrentFnArgument(MF, RegVar, Scope))
addScopeVariable(Scope, RegVar);
- if (DbgVariable *AbsVar = findAbstractVariable(DV, MInsn->getDebugLoc())) {
- DbgVariableToDbgInstMap[AbsVar] = MInsn;
- VarToAbstractVarMap[RegVar] = AbsVar;
- }
+ if (AbsVar)
+ AbsVar->setMInsn(MInsn);
// Simple ranges that are fully coalesced.
if (History.size() <= 1 || (History.size() == 2 &&
MInsn->isIdenticalTo(History.back()))) {
- DbgVariableToDbgInstMap[RegVar] = MInsn;
+ RegVar->setMInsn(MInsn);
continue;
}
}
// The value is valid until the next DBG_VALUE or clobber.
- DotDebugLocEntries.push_back(getDebugLocEntry(Asm, FLabel, SLabel, Begin));
+ DotDebugLocEntries.push_back(getDebugLocEntry(Asm, FLabel, SLabel,
+ Begin));
}
DotDebugLocEntries.push_back(DotDebugLocEntry());
}
// Collect info for variables that were optimized out.
- const Function *F = MF->getFunction();
- if (NamedMDNode *NMD = getFnSpecificMDNode(*(F->getParent()), F->getName())) {
- for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
- DIVariable DV(cast<MDNode>(NMD->getOperand(i)));
- if (!DV || !Processed.insert(DV))
- continue;
- if (LexicalScope *Scope = LScopes.findLexicalScope(DV.getContext()))
- addScopeVariable(Scope, new DbgVariable(DV));
- }
+ LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
+ DIArray Variables = DISubprogram(FnScope->getScopeNode()).getVariables();
+ for (unsigned i = 0, e = Variables.getNumElements(); i != e; ++i) {
+ DIVariable DV(Variables.getElement(i));
+ if (!DV || !DV.Verify() || !Processed.insert(DV))
+ continue;
+ if (LexicalScope *Scope = LScopes.findLexicalScope(DV.getContext()))
+ addScopeVariable(Scope, new DbgVariable(DV, NULL));
}
}
if (!MI->isDebugValue()) {
DebugLoc DL = MI->getDebugLoc();
if (DL != PrevInstLoc && (!DL.isUnknown() || UnknownLocations)) {
- unsigned Flags = DWARF2_FLAG_IS_STMT;
+ unsigned Flags = 0;
PrevInstLoc = DL;
if (DL == PrologEndLoc) {
Flags |= DWARF2_FLAG_PROLOGUE_END;
PrologEndLoc = DebugLoc();
}
+ if (PrologEndLoc.isUnknown())
+ Flags |= DWARF2_FLAG_IS_STMT;
+
if (!DL.isUnknown()) {
const MDNode *Scope = DL.getScope(Asm->MF->getFunction()->getContext());
recordSourceLine(DL.getLine(), DL.getCol(), Scope, Flags);
}
/// getFnDebugLoc - Walk up the scope chain of given debug loc and find
-/// line number info for the function.
+/// line number info for the function.
static DebugLoc getFnDebugLoc(DebugLoc DL, const LLVMContext &Ctx) {
const MDNode *Scope = getScopeNode(DL, Ctx);
DISubprogram SP = getDISubprogram(Scope);
- if (SP.Verify())
- return DebugLoc::get(SP.getLineNumber(), 0, SP);
+ if (SP.Verify()) {
+ // Check for number of operands since the compatibility is
+ // cheap here.
+ if (SP->getNumOperands() > 19)
+ return DebugLoc::get(SP.getScopeLineNumber(), 0, SP);
+ else
+ return DebugLoc::get(SP.getLineNumber(), 0, SP);
+ }
+
return DebugLoc();
}
const MachineInstr *MI = II;
if (MI->isDebugValue()) {
- assert (MI->getNumOperands() > 1 && "Invalid machine instruction!");
+ assert(MI->getNumOperands() > 1 && "Invalid machine instruction!");
// Keep track of user variables.
const MDNode *Var =
if (!MI->isLabel())
AtBlockEntry = false;
- // First known non DBG_VALUE location marks beginning of function
- // body.
- if (PrologEndLoc.isUnknown() && !MI->getDebugLoc().isUnknown())
+ // First known non-DBG_VALUE and non-frame setup location marks
+ // the beginning of the function body.
+ if (!MI->getFlag(MachineInstr::FrameSetup) &&
+ (PrologEndLoc.isUnknown() && !MI->getDebugLoc().isUnknown()))
PrologEndLoc = MI->getDebugLoc();
// Check if the instruction clobbers any registers with debug vars.
MOE = MI->operands_end(); MOI != MOE; ++MOI) {
if (!MOI->isReg() || !MOI->isDef() || !MOI->getReg())
continue;
- for (const unsigned *AI = TRI->getOverlaps(MOI->getReg());
- unsigned Reg = *AI; ++AI) {
+ for (MCRegAliasIterator AI(MOI->getReg(), TRI, true);
+ AI.isValid(); ++AI) {
+ unsigned Reg = *AI;
const MDNode *Var = LiveUserVar[Reg];
if (!Var)
continue;
MF->getFunction()->getContext());
recordSourceLine(FnStartDL.getLine(), FnStartDL.getCol(),
FnStartDL.getScope(MF->getFunction()->getContext()),
- DWARF2_FLAG_IS_STMT);
+ 0);
}
}
SmallPtrSet<const MDNode *, 16> ProcessedVars;
collectVariableInfo(MF, ProcessedVars);
+ LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
+ CompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
+ assert(TheCU && "Unable to find compile unit!");
+
// Construct abstract scopes.
- SmallVector<LexicalScope *, 4> &AList = LScopes.getAbstractScopesList();
- for (SmallVector<LexicalScope *, 4>::iterator AI = AList.begin(),
- AE = AList.end(); AI != AE; ++AI) {
- DISubprogram SP((*AI)->getScopeNode());
+ ArrayRef<LexicalScope *> AList = LScopes.getAbstractScopesList();
+ for (unsigned i = 0, e = AList.size(); i != e; ++i) {
+ LexicalScope *AScope = AList[i];
+ DISubprogram SP(AScope->getScopeNode());
if (SP.Verify()) {
// Collect info for variables that were optimized out.
- StringRef FName = SP.getLinkageName();
- if (FName.empty())
- FName = SP.getName();
- if (NamedMDNode *NMD =
- getFnSpecificMDNode(*(MF->getFunction()->getParent()), FName)) {
- for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
- DIVariable DV(cast<MDNode>(NMD->getOperand(i)));
- if (!DV || !ProcessedVars.insert(DV))
- continue;
- if (LexicalScope *Scope = LScopes.findAbstractScope(DV.getContext()))
- addScopeVariable(Scope, new DbgVariable(DV));
- }
+ DIArray Variables = SP.getVariables();
+ for (unsigned i = 0, e = Variables.getNumElements(); i != e; ++i) {
+ DIVariable DV(Variables.getElement(i));
+ if (!DV || !DV.Verify() || !ProcessedVars.insert(DV))
+ continue;
+ // Check that DbgVariable for DV wasn't created earlier, when
+ // findAbstractVariable() was called for inlined instance of DV.
+ LLVMContext &Ctx = DV->getContext();
+ DIVariable CleanDV = cleanseInlinedVariable(DV, Ctx);
+ if (AbstractVariables.lookup(CleanDV))
+ continue;
+ if (LexicalScope *Scope = LScopes.findAbstractScope(DV.getContext()))
+ addScopeVariable(Scope, new DbgVariable(DV, NULL));
}
}
- if (ProcessedSPNodes.count((*AI)->getScopeNode()) == 0)
- constructScopeDIE(*AI);
+ if (ProcessedSPNodes.count(AScope->getScopeNode()) == 0)
+ constructScopeDIE(TheCU, AScope);
}
- DIE *CurFnDIE = constructScopeDIE(LScopes.getCurrentFunctionScope());
+ DIE *CurFnDIE = constructScopeDIE(TheCU, FnScope);
- if (!DisableFramePointerElim(*MF)) {
- LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
- CompileUnit *TheCU = getCompileUnit(FnScope->getScopeNode());
- TheCU->addUInt(CurFnDIE, dwarf::DW_AT_APPLE_omit_frame_ptr,
- dwarf::DW_FORM_flag, 1);
- }
+ if (!MF->getTarget().Options.DisableFramePointerElim(*MF))
+ TheCU->addFlag(CurFnDIE, dwarf::DW_AT_APPLE_omit_frame_ptr);
+
DebugFrames.push_back(FunctionDebugFrameInfo(Asm->getFunctionNumber(),
MMI->getFrameMoves()));
DeleteContainerPointers(I->second);
ScopeVariables.clear();
DeleteContainerPointers(CurrentFnArguments);
- DbgVariableToFrameIndexMap.clear();
- VarToAbstractVarMap.clear();
- DbgVariableToDbgInstMap.clear();
UserVariables.clear();
DbgValues.clear();
AbstractVariables.clear();
PrevLabel = NULL;
}
-/// recordVariableFrameIndex - Record a variable's index.
-void DwarfDebug::recordVariableFrameIndex(const DbgVariable *V, int Index) {
- assert (V && "Invalid DbgVariable!");
- DbgVariableToFrameIndexMap[V] = Index;
-}
-
-/// findVariableFrameIndex - Return true if frame index for the variable
-/// is found. Update FI to hold value of the index.
-bool DwarfDebug::findVariableFrameIndex(const DbgVariable *V, int *FI) {
- assert (V && "Invalid DbgVariable!");
- DenseMap<const DbgVariable *, int>::iterator I =
- DbgVariableToFrameIndexMap.find(V);
- if (I == DbgVariableToFrameIndexMap.end())
- return false;
- *FI = I->second;
- return true;
-}
-
/// recordSourceLine - Register a source line with debug info. Returns the
/// unique label that was emitted and which provides correspondence to
/// the source line list.
DISubprogram SP(S);
Fn = SP.getFilename();
Dir = SP.getDirectory();
+ } else if (Scope.isLexicalBlockFile()) {
+ DILexicalBlockFile DBF(S);
+ Fn = DBF.getFilename();
+ Dir = DBF.getDirectory();
} else if (Scope.isLexicalBlock()) {
DILexicalBlock DB(S);
Fn = DB.getFilename();
Dir = DB.getDirectory();
} else
- assert(0 && "Unexpected scope info");
+ llvm_unreachable("Unexpected scope info");
Src = GetOrCreateSourceID(Fn, Dir);
}
// Get the children.
const std::vector<DIE *> &Children = Die->getChildren();
- // If not last sibling and has children then add sibling offset attribute.
- if (!Last && !Children.empty())
- Die->addSiblingOffset(DIEValueAllocator);
-
// Record the abbreviation.
assignAbbrevNumber(Die->getAbbrev());
}
}
-/// EmitSectionSym - Switch to the specified MCSection and emit an assembler
-/// temporary label to it if SymbolStem is specified.
-static MCSymbol *EmitSectionSym(AsmPrinter *Asm, const MCSection *Section,
- const char *SymbolStem = 0) {
- Asm->OutStreamer.SwitchSection(Section);
- if (!SymbolStem) return 0;
-
- MCSymbol *TmpSym = Asm->GetTempSymbol(SymbolStem);
- Asm->OutStreamer.EmitLabel(TmpSym);
- return TmpSym;
-}
-
/// EmitSectionLabels - Emit initial Dwarf sections with a label at
/// the start of each one.
void DwarfDebug::EmitSectionLabels() {
EmitSectionSym(Asm, TLOF.getDwarfLineSection(), "section_line");
EmitSectionSym(Asm, TLOF.getDwarfLocSection());
- EmitSectionSym(Asm, TLOF.getDwarfPubNamesSection());
EmitSectionSym(Asm, TLOF.getDwarfPubTypesSection());
DwarfStrSectionSym =
EmitSectionSym(Asm, TLOF.getDwarfStrSection(), "section_str");
Asm->OutStreamer.AddComment(dwarf::AttributeString(Attr));
switch (Attr) {
- case dwarf::DW_AT_sibling:
- Asm->EmitInt32(Die->getSiblingOffset());
- break;
case dwarf::DW_AT_abstract_origin: {
DIEEntry *E = cast<DIEEntry>(Values[i]);
DIE *Origin = E->getEntry();
// DW_AT_range Value encodes offset in debug_range section.
DIEInteger *V = cast<DIEInteger>(Values[i]);
- if (Asm->MAI->doesDwarfUsesLabelOffsetForRanges()) {
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections()) {
Asm->EmitLabelPlusOffset(DwarfDebugRangeSectionSym,
V->getValue(),
4);
break;
}
case dwarf::DW_AT_location: {
- if (UseDotDebugLocEntry.count(Die) != 0) {
- DIELabel *L = cast<DIELabel>(Values[i]);
- Asm->EmitLabelDifference(L->getValue(), DwarfDebugLocSectionSym, 4);
- } else
+ if (DIELabel *L = dyn_cast<DIELabel>(Values[i])) {
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
+ Asm->EmitLabelReference(L->getValue(), 4);
+ else
+ Asm->EmitLabelDifference(L->getValue(), DwarfDebugLocSectionSym, 4);
+ } else {
Values[i]->EmitValue(Asm, Form);
+ }
break;
}
case dwarf::DW_AT_accessibility: {
Asm->EmitInt8(1);
}
-/// emitDebugPubNames - Emit visible names into a debug pubnames section.
-///
-void DwarfDebug::emitDebugPubNames() {
+/// emitAccelNames - Emit visible names into a hashed accelerator table
+/// section.
+void DwarfDebug::emitAccelNames() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
CompileUnit *TheCU = I->second;
- // Start the dwarf pubnames section.
- Asm->OutStreamer.SwitchSection(
- Asm->getObjFileLowering().getDwarfPubNamesSection());
+ const StringMap<std::vector<DIE*> > &Names = TheCU->getAccelNames();
+ for (StringMap<std::vector<DIE*> >::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ const std::vector<DIE *> &Entities = GI->second;
+ for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
+ DE = Entities.end(); DI != DE; ++DI)
+ AT.AddName(Name, (*DI));
+ }
+ }
- Asm->OutStreamer.AddComment("Length of Public Names Info");
- Asm->EmitLabelDifference(
- Asm->GetTempSymbol("pubnames_end", TheCU->getID()),
- Asm->GetTempSymbol("pubnames_begin", TheCU->getID()), 4);
+ AT.FinalizeTable(Asm, "Names");
+ Asm->OutStreamer.SwitchSection(
+ Asm->getObjFileLowering().getDwarfAccelNamesSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("names_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_begin",
- TheCU->getID()));
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
- Asm->OutStreamer.AddComment("DWARF Version");
- Asm->EmitInt16(dwarf::DWARF_VERSION);
+/// emitAccelObjC - Emit objective C classes and categories into a hashed
+/// accelerator table section.
+void DwarfDebug::emitAccelObjC() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<std::vector<DIE*> > &Names = TheCU->getAccelObjC();
+ for (StringMap<std::vector<DIE*> >::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ const std::vector<DIE *> &Entities = GI->second;
+ for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
+ DE = Entities.end(); DI != DE; ++DI)
+ AT.AddName(Name, (*DI));
+ }
+ }
- Asm->OutStreamer.AddComment("Offset of Compilation Unit Info");
- Asm->EmitSectionOffset(Asm->GetTempSymbol("info_begin", TheCU->getID()),
- DwarfInfoSectionSym);
+ AT.FinalizeTable(Asm, "ObjC");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelObjCSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("objc_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
- Asm->OutStreamer.AddComment("Compilation Unit Length");
- Asm->EmitLabelDifference(Asm->GetTempSymbol("info_end", TheCU->getID()),
- Asm->GetTempSymbol("info_begin", TheCU->getID()),
- 4);
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
- const StringMap<DIE*> &Globals = TheCU->getGlobals();
- for (StringMap<DIE*>::const_iterator
- GI = Globals.begin(), GE = Globals.end(); GI != GE; ++GI) {
+/// emitAccelNamespace - Emit namespace dies into a hashed accelerator
+/// table.
+void DwarfDebug::emitAccelNamespaces() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<std::vector<DIE*> > &Names = TheCU->getAccelNamespace();
+ for (StringMap<std::vector<DIE*> >::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
const char *Name = GI->getKeyData();
- DIE *Entity = GI->second;
+ const std::vector<DIE *> &Entities = GI->second;
+ for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
+ DE = Entities.end(); DI != DE; ++DI)
+ AT.AddName(Name, (*DI));
+ }
+ }
- Asm->OutStreamer.AddComment("DIE offset");
- Asm->EmitInt32(Entity->getOffset());
+ AT.FinalizeTable(Asm, "namespac");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelNamespaceSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("namespac_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("External Name");
- Asm->OutStreamer.EmitBytes(StringRef(Name, strlen(Name)+1), 0);
- }
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
- Asm->OutStreamer.AddComment("End Mark");
- Asm->EmitInt32(0);
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_end",
- TheCU->getID()));
+/// emitAccelTypes() - Emit type dies into a hashed accelerator table.
+void DwarfDebug::emitAccelTypes() {
+ std::vector<DwarfAccelTable::Atom> Atoms;
+ Atoms.push_back(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ Atoms.push_back(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeTag,
+ dwarf::DW_FORM_data2));
+ Atoms.push_back(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeTypeFlags,
+ dwarf::DW_FORM_data1));
+ DwarfAccelTable AT(Atoms);
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<std::vector<std::pair<DIE*, unsigned > > > &Names
+ = TheCU->getAccelTypes();
+ for (StringMap<std::vector<std::pair<DIE*, unsigned> > >::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ const std::vector<std::pair<DIE *, unsigned> > &Entities = GI->second;
+ for (std::vector<std::pair<DIE *, unsigned> >::const_iterator DI
+ = Entities.begin(), DE = Entities.end(); DI !=DE; ++DI)
+ AT.AddName(Name, (*DI).first, (*DI).second);
+ }
}
+
+ AT.FinalizeTable(Asm, "types");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelTypesSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("types_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
+
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
}
void DwarfDebug::emitDebugPubTypes() {
for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
E = CUMap.end(); I != E; ++I) {
CompileUnit *TheCU = I->second;
- // Start the dwarf pubnames section.
+ // Start the dwarf pubtypes section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfPubTypesSection());
Asm->OutStreamer.AddComment("Length of Public Types Info");
Asm->EmitInt32(Entity->getOffset());
if (Asm->isVerbose()) Asm->OutStreamer.AddComment("External Name");
+ // Emit the name with a terminating null byte.
Asm->OutStreamer.EmitBytes(StringRef(Name, GI->getKeyLength()+1), 0);
}
// Emit a label for reference from debug information entries.
Asm->OutStreamer.EmitLabel(Entries[i].second->getValue().first);
- // Emit the string itself.
- Asm->OutStreamer.EmitBytes(Entries[i].second->getKey(), 0/*addrspace*/);
+ // Emit the string itself with a terminating null byte.
+ Asm->OutStreamer.EmitBytes(StringRef(Entries[i].second->getKeyData(),
+ Entries[i].second->getKeyLength()+1),
+ 0/*addrspace*/);
}
}
if (Element == DIBuilder::OpPlus) {
Asm->EmitInt8(dwarf::DW_OP_plus_uconst);
Asm->EmitULEB128(DV.getAddrElement(++i));
- } else if (Element == DIBuilder::OpDeref)
- Asm->EmitInt8(dwarf::DW_OP_deref);
- else llvm_unreachable("unknown Opcode found in complex address");
+ } else if (Element == DIBuilder::OpDeref) {
+ if (!Entry.Loc.isReg())
+ Asm->EmitInt8(dwarf::DW_OP_deref);
+ } else
+ llvm_unreachable("unknown Opcode found in complex address");
}
}
}
/// __debug_info section, and the low_pc is the starting address for the
/// inlining instance.
void DwarfDebug::emitDebugInlineInfo() {
- if (!Asm->MAI->doesDwarfUsesInlineInfoSection())
+ if (!Asm->MAI->doesDwarfUseInlineInfoSection())
return;
if (!FirstCU)
StringRef Name = SP.getName();
Asm->OutStreamer.AddComment("MIPS linkage name");
- if (LName.empty()) {
- Asm->OutStreamer.EmitBytes(Name, 0);
- Asm->OutStreamer.EmitIntValue(0, 1, 0); // nul terminator.
- } else
+ if (LName.empty())
+ Asm->EmitSectionOffset(getStringPoolEntry(Name), DwarfStrSectionSym);
+ else
Asm->EmitSectionOffset(getStringPoolEntry(getRealLinkageName(LName)),
DwarfStrSectionSym);
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