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Code Issues Projects Releases Wiki Activity

1) make DIE take AsmPrinter instead of DwarfPrinter.

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2) change DwarfDebug to not inherit from DwarfPrinter.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100372 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-04-05 00:13:49 +00:00
parent 02b86b93dc
commit d38fee8ddc
7 changed files with 151 additions and 130 deletions
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183
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -300,7 +300,7 @@ DbgScope::~DbgScope() {
} // end llvm namespace
DwarfDebug::DwarfDebug(AsmPrinter *A)
: DwarfPrinter(A), ModuleCU(0),
: Asm(A), MMI(Asm->MMI), ModuleCU(0),
AbbreviationsSet(InitAbbreviationsSetSize), shouldEmit(false),
CurrentFnDbgScope(0), DebugTimer(0) {
NextStringPoolNumber = 0;
@ -403,7 +403,7 @@ void DwarfDebug::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
///
void DwarfDebug::addBlock(DIE *Die, unsigned Attribute, unsigned Form,
DIEBlock *Block) {
Block->ComputeSize(TD);
Block->ComputeSize(&Asm->getTargetData());
DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
Die->addValue(Attribute, Block->BestForm(), Block);
}
@ -557,6 +557,7 @@ void DwarfDebug::addComplexAddress(DbgVariable *&DV, DIE *Die,
// Decode the original location, and use that as the start of the byref
// variable's location.
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
@ -697,6 +698,7 @@ void DwarfDebug::addBlockByrefAddress(DbgVariable *&DV, DIE *Die,
// Decode the original location, and use that as the start of the byref
// variable's location.
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
@ -752,6 +754,7 @@ void DwarfDebug::addBlockByrefAddress(DbgVariable *&DV, DIE *Die,
/// provided.
void DwarfDebug::addAddress(DIE *Die, unsigned Attribute,
const MachineLocation &Location) {
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
unsigned Reg = RI->getDwarfRegNum(Location.getReg(), false);
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
@ -1118,7 +1121,8 @@ DIE *DwarfDebug::createMemberDIE(const DIDerivedType &DT) {
Offset -= FieldOffset;
// Maybe we need to work from the other end.
if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
if (Asm->getTargetData().isLittleEndian())
Offset = FieldSize - (Offset + Size);
addUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
// Here WD_AT_data_member_location points to the anonymous
@ -1276,7 +1280,7 @@ DbgScope *DwarfDebug::getUpdatedDbgScope(MDNode *N, const MachineInstr *MI,
if (!Parent && !InlinedAt) {
StringRef SPName = DISubprogram(N).getLinkageName();
if (SPName == MF->getFunction()->getName())
if (SPName == Asm->MF->getFunction()->getName())
CurrentFnDbgScope = NScope;
}
@ -1320,50 +1324,51 @@ DbgScope *DwarfDebug::getOrCreateAbstractScope(MDNode *N) {
/// If there are global variables in this scope then create and insert
/// DIEs for these variables.
DIE *DwarfDebug::updateSubprogramScopeDIE(MDNode *SPNode) {
DIE *SPDie = ModuleCU->getDIE(SPNode);
assert(SPDie && "Unable to find subprogram DIE!");
DISubprogram SP(SPNode);
DIE *SPDie = ModuleCU->getDIE(SPNode);
assert(SPDie && "Unable to find subprogram DIE!");
DISubprogram SP(SPNode);
// 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
// expect specification DIE in parent function. So avoid creating
// specification DIE for a function defined inside a function.
if (SP.isDefinition() && !SP.getContext().isCompileUnit() &&
!SP.getContext().isFile() && !SP.getContext().isSubprogram()) {
addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
// Add arguments.
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).getNode()));
addType(Arg, ATy);
if (ATy.isArtificial())
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
SPDie->addChild(Arg);
}
DIE *SPDeclDie = SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
SPDeclDie);
ModuleCU->addDie(SPDie);
}
// 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
// expect specification DIE in parent function. So avoid creating
// specification DIE for a function defined inside a function.
if (SP.isDefinition() && !SP.getContext().isCompileUnit() &&
!SP.getContext().isFile() && !SP.getContext().isSubprogram()) {
addUInt(SPDie, dwarf::DW_AT_declaration, dwarf::DW_FORM_flag, 1);
// Add arguments.
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).getNode()));
addType(Arg, ATy);
if (ATy.isArtificial())
addUInt(Arg, dwarf::DW_AT_artificial, dwarf::DW_FORM_flag, 1);
SPDie->addChild(Arg);
}
DIE *SPDeclDie = SPDie;
SPDie = new DIE(dwarf::DW_TAG_subprogram);
addDIEEntry(SPDie, dwarf::DW_AT_specification, dwarf::DW_FORM_ref4,
SPDeclDie);
ModuleCU->addDie(SPDie);
}
addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
Asm->GetTempSymbol("func_end", Asm->getFunctionNumber()));
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
addLabel(SPDie, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
Asm->GetTempSymbol("func_begin", SubprogramCount));
addLabel(SPDie, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
Asm->GetTempSymbol("func_end", SubprogramCount));
MachineLocation Location(RI->getFrameRegister(*MF));
addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
if (!DISubprogram(SPNode).isLocalToUnit())
addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
return SPDie;
if (!DISubprogram(SPNode).isLocalToUnit())
addUInt(SPDie, dwarf::DW_AT_external, dwarf::DW_FORM_flag, 1);
return SPDie;
}
/// constructLexicalScope - Construct new DW_TAG_lexical_block
@ -1381,9 +1386,10 @@ DIE *DwarfDebug::constructLexicalScopeDIE(DbgScope *Scope) {
return ScopeDIE;
addLabel(ScopeDIE, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
Start ? Start : Asm->GetTempSymbol("func_begin", SubprogramCount));
Start ? Start : Asm->GetTempSymbol("func_begin",
Asm->getFunctionNumber()));
addLabel(ScopeDIE, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
End ? End : Asm->GetTempSymbol("func_end", SubprogramCount));
End ? End : Asm->GetTempSymbol("func_end",Asm->getFunctionNumber()));
return ScopeDIE;
}
@ -1523,7 +1529,8 @@ DIE *DwarfDebug::constructVariableDIE(DbgVariable *DV, DbgScope *Scope) {
} else {
MachineLocation Location;
unsigned FrameReg;
int Offset = RI->getFrameIndexReference(*MF, DV->getFrameIndex(),
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
int Offset = RI->getFrameIndexReference(*Asm->MF, DV->getFrameIndex(),
FrameReg);
Location.set(FrameReg, Offset);
@ -1784,9 +1791,7 @@ void DwarfDebug::constructSubprogramDIE(MDNode *N) {
/// content. Create global DIEs and emit initial debug info sections.
/// This is inovked by the target AsmPrinter.
void DwarfDebug::beginModule(Module *M) {
this->M = M;
if (!MAI->doesSupportDebugInformation())
if (!Asm->MAI->doesSupportDebugInformation())
return;
TimeRegion Timer(DebugTimer);
@ -1825,7 +1830,7 @@ void DwarfDebug::beginModule(Module *M) {
// Print out .file directives to specify files for .loc directives. These are
// printed out early so that they precede any .loc directives.
if (MAI->hasDotLocAndDotFile()) {
if (Asm->MAI->hasDotLocAndDotFile()) {
for (unsigned i = 1, e = getNumSourceIds()+1; i != e; ++i) {
// Remember source id starts at 1.
std::pair<unsigned, unsigned> Id = getSourceDirectoryAndFileIds(i);
@ -1981,7 +1986,7 @@ DbgVariable *DwarfDebug::findAbstractVariable(DIVariable &Var,
void DwarfDebug::collectVariableInfo() {
if (!MMI) return;
const LLVMContext &Ctx = MF->getFunction()->getContext();
const LLVMContext &Ctx = Asm->MF->getFunction()->getContext();
MachineModuleInfo::VariableDbgInfoMapTy &VMap = MMI->getVariableDbgInfo();
for (MachineModuleInfo::VariableDbgInfoMapTy::iterator VI = VMap.begin(),
@ -2007,7 +2012,7 @@ void DwarfDebug::collectVariableInfo() {
}
// Collect variable information from DBG_VALUE machine instructions;
for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
@ -2059,7 +2064,7 @@ void DwarfDebug::beginScope(const MachineInstr *MI) {
if (DL == PrevInstLoc)
return;
MDNode *Scope = DL.getScope(MF->getFunction()->getContext());
MDNode *Scope = DL.getScope(Asm->MF->getFunction()->getContext());
// FIXME: Should only verify each scope once!
if (!DIScope(Scope).Verify())
@ -2152,10 +2157,10 @@ bool DwarfDebug::extractScopeInformation() {
DenseMap<const MachineInstr *, unsigned> MIIndexMap;
unsigned MIIndex = 0;
LLVMContext &Ctx = MF->getFunction()->getContext();
LLVMContext &Ctx = Asm->MF->getFunction()->getContext();
// Scan each instruction and create scopes. First build working set of scopes.
for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
@ -2179,7 +2184,7 @@ bool DwarfDebug::extractScopeInformation() {
// Build scope hierarchy using working set of scopes.
for (MachineFunction::const_iterator I = MF->begin(), E = MF->end();
for (MachineFunction::const_iterator I = Asm->MF->begin(), E = Asm->MF->end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
@ -2247,19 +2252,17 @@ bool DwarfDebug::extractScopeInformation() {
/// beginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
void DwarfDebug::beginFunction(const MachineFunction *MF) {
this->MF = MF;
if (!ShouldEmitDwarfDebug()) return;
TimeRegion Timer(DebugTimer);
if (!extractScopeInformation())
return;
TimeRegion Timer(DebugTimer);
collectVariableInfo();
// Assumes in correct section after the entry point.
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_begin",
++SubprogramCount));
Asm->getFunctionNumber()));
// Emit label for the implicitly defined dbg.stoppoint at the start of the
// function.
@ -2291,7 +2294,8 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
if (CurrentFnDbgScope) {
// Define end label for subprogram.
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_end", SubprogramCount));
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("func_end",
Asm->getFunctionNumber()));
// Get function line info.
if (!Lines.empty()) {
@ -2311,7 +2315,7 @@ void DwarfDebug::endFunction(const MachineFunction *MF) {
constructScopeDIE(CurrentFnDbgScope);
DebugFrames.push_back(FunctionDebugFrameInfo(SubprogramCount,
DebugFrames.push_back(FunctionDebugFrameInfo(Asm->getFunctionNumber(),
MMI->getFrameMoves()));
}
@ -2409,7 +2413,7 @@ DwarfDebug::computeSizeAndOffset(DIE *Die, unsigned Offset, bool Last) {
// Size the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i)
// Size attribute value.
Offset += Values[i]->SizeOf(TD, AbbrevData[i].getForm());
Offset += Values[i]->SizeOf(&Asm->getTargetData(), AbbrevData[i].getForm());
// Size the DIE children if any.
if (!Children.empty()) {
@ -2459,7 +2463,7 @@ void DwarfDebug::EmitSectionLabels() {
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
// Dwarf sections base addresses.
if (MAI->doesDwarfRequireFrameSection()) {
if (Asm->MAI->doesDwarfRequireFrameSection()) {
DwarfFrameSectionSym =
EmitSectionSym(Asm, TLOF.getDwarfFrameSection(), "section_debug_frame");
}
@ -2525,7 +2529,7 @@ void DwarfDebug::emitDIE(DIE *Die) {
}
default:
// Emit an attribute using the defined form.
Values[i]->EmitValue(this, Form);
Values[i]->EmitValue(Asm, Form);
break;
}
}
@ -2570,7 +2574,7 @@ void DwarfDebug::emitDebugInfo() {
Asm->EmitSectionOffset(Asm->GetTempSymbol("abbrev_begin"),
DwarfAbbrevSectionSym);
Asm->OutStreamer.AddComment("Address Size (in bytes)");
Asm->EmitInt8(TD->getPointerSize());
Asm->EmitInt8(Asm->getTargetData().getPointerSize());
emitDIE(Die);
// FIXME - extra padding for gdb bug.
@ -2602,7 +2606,7 @@ void DwarfDebug::emitAbbreviations() const {
Asm->EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
// Emit the abbreviations data.
Abbrev->Emit(this);
Abbrev->Emit(Asm);
}
// Mark end of abbreviations.
@ -2621,14 +2625,15 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
Asm->EmitInt8(0);
Asm->OutStreamer.AddComment("Op size");
Asm->EmitInt8(TD->getPointerSize() + 1);
Asm->EmitInt8(Asm->getTargetData().getPointerSize() + 1);
Asm->OutStreamer.AddComment("DW_LNE_set_address");
Asm->EmitInt8(dwarf::DW_LNE_set_address);
Asm->OutStreamer.AddComment("Section end label");
Asm->OutStreamer.EmitSymbolValue(Asm->GetTempSymbol("section_end",SectionEnd),
TD->getPointerSize(), 0/*AddrSpace*/);
Asm->getTargetData().getPointerSize(),
0/*AddrSpace*/);
// Mark end of matrix.
Asm->OutStreamer.AddComment("DW_LNE_end_sequence");
@ -2642,7 +2647,7 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
void DwarfDebug::emitDebugLines() {
// If the target is using .loc/.file, the assembler will be emitting the
// .debug_line table automatically.
if (MAI->hasDotLocAndDotFile())
if (Asm->MAI->hasDotLocAndDotFile())
return;
// Minimum line delta, thus ranging from -10..(255-10).
@ -2759,13 +2764,14 @@ void DwarfDebug::emitDebugLines() {
Asm->OutStreamer.AddComment("Extended Op");
Asm->EmitInt8(0);
Asm->OutStreamer.AddComment("Op size");
Asm->EmitInt8(TD->getPointerSize() + 1);
Asm->EmitInt8(Asm->getTargetData().getPointerSize() + 1);
Asm->OutStreamer.AddComment("DW_LNE_set_address");
Asm->EmitInt8(dwarf::DW_LNE_set_address);
Asm->OutStreamer.AddComment("Location label");
Asm->OutStreamer.EmitSymbolValue(Label, TD->getPointerSize(),
Asm->OutStreamer.EmitSymbolValue(Label,
Asm->getTargetData().getPointerSize(),
0/*AddrSpace*/);
// If change of source, then switch to the new source.
@ -2820,13 +2826,13 @@ void DwarfDebug::emitDebugLines() {
/// emitCommonDebugFrame - Emit common frame info into a debug frame section.
///
void DwarfDebug::emitCommonDebugFrame() {
if (!MAI->doesDwarfRequireFrameSection())
if (!Asm->MAI->doesDwarfRequireFrameSection())
return;
int stackGrowth =
Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
TargetFrameInfo::StackGrowsUp ?
TD->getPointerSize() : -TD->getPointerSize();
int stackGrowth = Asm->getTargetData().getPointerSize();
if (Asm->TM.getFrameInfo()->getStackGrowthDirection() ==
TargetFrameInfo::StackGrowsDown)
stackGrowth *= -1;
// Start the dwarf frame section.
Asm->OutStreamer.SwitchSection(
@ -2847,6 +2853,7 @@ void DwarfDebug::emitCommonDebugFrame() {
Asm->EmitULEB128(1, "CIE Code Alignment Factor");
Asm->EmitSLEB128(stackGrowth, "CIE Data Alignment Factor");
Asm->OutStreamer.AddComment("CIE RA Column");
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
Asm->EmitInt8(RI->getDwarfRegNum(RI->getRARegister(), false));
std::vector<MachineMove> Moves;
@ -2862,7 +2869,7 @@ void DwarfDebug::emitCommonDebugFrame() {
/// section.
void DwarfDebug::
emitFunctionDebugFrame(const FunctionDebugFrameInfo &DebugFrameInfo) {
if (!MAI->doesDwarfRequireFrameSection())
if (!Asm->MAI->doesDwarfRequireFrameSection())
return;
// Start the dwarf frame section.
@ -2886,12 +2893,13 @@ emitFunctionDebugFrame(const FunctionDebugFrameInfo &DebugFrameInfo) {
MCSymbol *FuncBeginSym =
Asm->GetTempSymbol("func_begin", DebugFrameInfo.Number);
Asm->OutStreamer.EmitSymbolValue(FuncBeginSym,
TD->getPointerSize(), 0/*AddrSpace*/);
Asm->getTargetData().getPointerSize(),
0/*AddrSpace*/);
Asm->OutStreamer.AddComment("FDE address range");
Asm->EmitLabelDifference(Asm->GetTempSymbol("func_end",DebugFrameInfo.Number),
FuncBeginSym, TD->getPointerSize());
FuncBeginSym, Asm->getTargetData().getPointerSize());
Asm->EmitFrameMoves(DebugFrameInfo.Moves, FuncBeginSym, false);
@ -3072,7 +3080,7 @@ void DwarfDebug::emitDebugMacInfo() {
/// __debug_info section, and the low_pc is the starting address for the
/// inlining instance.
void DwarfDebug::emitDebugInlineInfo() {
if (!MAI->doesDwarfUsesInlineInfoSection())
if (!Asm->MAI->doesDwarfUsesInlineInfoSection())
return;
if (!ModuleCU)
@ -3090,7 +3098,7 @@ void DwarfDebug::emitDebugInlineInfo() {
Asm->OutStreamer.AddComment("Dwarf Version");
Asm->EmitInt16(dwarf::DWARF_VERSION);
Asm->OutStreamer.AddComment("Address Size (in bytes)");
Asm->EmitInt8(TD->getPointerSize());
Asm->EmitInt8(Asm->getTargetData().getPointerSize());
for (SmallVector<MDNode *, 4>::iterator I = InlinedSPNodes.begin(),
E = InlinedSPNodes.end(); I != E; ++I) {
@ -3121,7 +3129,8 @@ void DwarfDebug::emitDebugInlineInfo() {
Asm->EmitInt32(LI->second->getOffset());
if (Asm->isVerbose()) Asm->OutStreamer.AddComment("low_pc");
Asm->OutStreamer.EmitSymbolValue(LI->first, TD->getPointerSize(), 0);
Asm->OutStreamer.EmitSymbolValue(LI->first,
Asm->getTargetData().getPointerSize(),0);
}
}