#include "DwarfCompileUnit.h"
-
+#include "DwarfExpression.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
namespace llvm {
-DwarfCompileUnit::DwarfCompileUnit(unsigned UID, DICompileUnit Node,
+DwarfCompileUnit::DwarfCompileUnit(unsigned UID, const DICompileUnit *Node,
AsmPrinter *A, DwarfDebug *DW,
DwarfFile *DWU)
: DwarfUnit(UID, dwarf::DW_TAG_compile_unit, Node, A, DW, DWU),
- Skeleton(nullptr), LabelBegin(nullptr) {
+ Skeleton(nullptr), BaseAddress(nullptr) {
insertDIE(Node, &getUnitDie());
}
DD->addArangeLabel(SymbolCU(this, Label));
unsigned idx = DD->getAddressPool().getIndex(Label);
- DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
- Die.addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
+ Die.addValue(DIEValueAllocator, Attribute, dwarf::DW_FORM_GNU_addr_index,
+ DIEInteger(idx));
}
void DwarfCompileUnit::addLocalLabelAddress(DIE &Die,
if (Label)
DD->addArangeLabel(SymbolCU(this, Label));
- Die.addValue(Attribute, dwarf::DW_FORM_addr,
- Label ? (DIEValue *)new (DIEValueAllocator) DIELabel(Label)
- : new (DIEValueAllocator) DIEInteger(0));
+ if (Label)
+ Die.addValue(DIEValueAllocator, Attribute, dwarf::DW_FORM_addr,
+ DIELabel(Label));
+ else
+ Die.addValue(DIEValueAllocator, Attribute, dwarf::DW_FORM_addr,
+ DIEInteger(0));
}
unsigned DwarfCompileUnit::getOrCreateSourceID(StringRef FileName,
// FIXME: add a better feature test than hasRawTextSupport. Even better,
// extend .file to support this.
- return Asm->OutStreamer.EmitDwarfFileDirective(
+ return Asm->OutStreamer->EmitDwarfFileDirective(
0, DirName, FileName,
- Asm->OutStreamer.hasRawTextSupport() ? 0 : getUniqueID());
+ Asm->OutStreamer->hasRawTextSupport() ? 0 : getUniqueID());
}
// Return const expression if value is a GEP to access merged global
}
/// getOrCreateGlobalVariableDIE - get or create global variable DIE.
-DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(DIGlobalVariable GV) {
+DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(
+ const DIGlobalVariable *GV) {
// Check for pre-existence.
if (DIE *Die = getDIE(GV))
return Die;
- assert(GV.isGlobalVariable());
+ assert(GV);
- DIScope GVContext = GV.getContext();
- DIType GTy = DD->resolve(GV.getType());
+ auto *GVContext = GV->getScope();
+ auto *GTy = DD->resolve(GV->getType());
// Construct the context before querying for the existence of the DIE in
// case such construction creates the DIE.
DIE *ContextDIE = getOrCreateContextDIE(GVContext);
// Add to map.
- DIE *VariableDIE = &createAndAddDIE(GV.getTag(), *ContextDIE, GV);
- DIScope DeclContext;
-
- if (DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration()) {
- DeclContext = resolve(SDMDecl.getContext());
- assert(SDMDecl.isStaticMember() && "Expected static member decl");
- assert(GV.isDefinition());
+ DIE *VariableDIE = &createAndAddDIE(GV->getTag(), *ContextDIE, GV);
+ DIScope *DeclContext;
+ if (auto *SDMDecl = GV->getStaticDataMemberDeclaration()) {
+ DeclContext = resolve(SDMDecl->getScope());
+ assert(SDMDecl->isStaticMember() && "Expected static member decl");
+ assert(GV->isDefinition());
// We need the declaration DIE that is in the static member's class.
DIE *VariableSpecDIE = getOrCreateStaticMemberDIE(SDMDecl);
addDIEEntry(*VariableDIE, dwarf::DW_AT_specification, *VariableSpecDIE);
} else {
- DeclContext = GV.getContext();
+ DeclContext = GV->getScope();
// Add name and type.
- addString(*VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
+ addString(*VariableDIE, dwarf::DW_AT_name, GV->getDisplayName());
addType(*VariableDIE, GTy);
// Add scoping info.
- if (!GV.isLocalToUnit())
+ if (!GV->isLocalToUnit())
addFlag(*VariableDIE, dwarf::DW_AT_external);
// Add line number info.
addSourceLine(*VariableDIE, GV);
}
- if (!GV.isDefinition())
+ if (!GV->isDefinition())
addFlag(*VariableDIE, dwarf::DW_AT_declaration);
+ else
+ addGlobalName(GV->getName(), *VariableDIE, DeclContext);
// Add location.
bool addToAccelTable = false;
- bool isGlobalVariable = GV.getGlobal() != nullptr;
- if (isGlobalVariable) {
+ if (auto *Global = dyn_cast_or_null<GlobalVariable>(GV->getVariable())) {
addToAccelTable = true;
- DIELoc *Loc = new (DIEValueAllocator) DIELoc();
- const MCSymbol *Sym = Asm->getSymbol(GV.getGlobal());
- if (GV.getGlobal()->isThreadLocal()) {
- // FIXME: Make this work with -gsplit-dwarf.
- unsigned PointerSize = Asm->getDataLayout().getPointerSize();
- assert((PointerSize == 4 || PointerSize == 8) &&
- "Add support for other sizes if necessary");
- // Based on GCC's support for TLS:
- if (!DD->useSplitDwarf()) {
- // 1) Start with a constNu of the appropriate pointer size
- addUInt(*Loc, dwarf::DW_FORM_data1,
- PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
- // 2) containing the (relocated) offset of the TLS variable
- // within the module's TLS block.
- addExpr(*Loc, dwarf::DW_FORM_udata,
- Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym));
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
+ const MCSymbol *Sym = Asm->getSymbol(Global);
+ if (Global->isThreadLocal()) {
+ if (Asm->TM.Options.EmulatedTLS) {
+ // TODO: add debug info for emulated thread local mode.
} else {
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
- addUInt(*Loc, dwarf::DW_FORM_udata,
- DD->getAddressPool().getIndex(Sym, /* TLS */ true));
+ // FIXME: Make this work with -gsplit-dwarf.
+ unsigned PointerSize = Asm->getDataLayout().getPointerSize();
+ assert((PointerSize == 4 || PointerSize == 8) &&
+ "Add support for other sizes if necessary");
+ // Based on GCC's support for TLS:
+ if (!DD->useSplitDwarf()) {
+ // 1) Start with a constNu of the appropriate pointer size
+ addUInt(*Loc, dwarf::DW_FORM_data1,
+ PointerSize == 4 ? dwarf::DW_OP_const4u : dwarf::DW_OP_const8u);
+ // 2) containing the (relocated) offset of the TLS variable
+ // within the module's TLS block.
+ addExpr(*Loc, dwarf::DW_FORM_udata,
+ Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym));
+ } else {
+ addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
+ addUInt(*Loc, dwarf::DW_FORM_udata,
+ DD->getAddressPool().getIndex(Sym, /* TLS */ true));
+ }
+ // 3) followed by an OP to make the debugger do a TLS lookup.
+ addUInt(*Loc, dwarf::DW_FORM_data1,
+ DD->useGNUTLSOpcode() ? dwarf::DW_OP_GNU_push_tls_address
+ : dwarf::DW_OP_form_tls_address);
}
- // 3) followed by a custom OP to make the debugger do a TLS lookup.
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_push_tls_address);
} else {
DD->addArangeLabel(SymbolCU(this, Sym));
addOpAddress(*Loc, Sym);
}
addBlock(*VariableDIE, dwarf::DW_AT_location, Loc);
- // Add the linkage name.
- StringRef LinkageName = GV.getLinkageName();
- if (!LinkageName.empty())
- // From DWARF4: DIEs to which DW_AT_linkage_name may apply include:
- // TAG_common_block, TAG_constant, TAG_entry_point, TAG_subprogram and
- // TAG_variable.
- addString(*VariableDIE,
- DD->getDwarfVersion() >= 4 ? dwarf::DW_AT_linkage_name
- : dwarf::DW_AT_MIPS_linkage_name,
- GlobalValue::getRealLinkageName(LinkageName));
+ addLinkageName(*VariableDIE, GV->getLinkageName());
} else if (const ConstantInt *CI =
- dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
+ dyn_cast_or_null<ConstantInt>(GV->getVariable())) {
addConstantValue(*VariableDIE, CI, GTy);
- } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV.getConstant())) {
+ } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV->getVariable())) {
addToAccelTable = true;
// GV is a merged global.
- DIELoc *Loc = new (DIEValueAllocator) DIELoc();
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
Value *Ptr = CE->getOperand(0);
MCSymbol *Sym = Asm->getSymbol(cast<GlobalValue>(Ptr));
DD->addArangeLabel(SymbolCU(this, Sym));
}
if (addToAccelTable) {
- DD->addAccelName(GV.getName(), *VariableDIE);
+ DD->addAccelName(GV->getName(), *VariableDIE);
// If the linkage name is different than the name, go ahead and output
// that as well into the name table.
- if (GV.getLinkageName() != "" && GV.getName() != GV.getLinkageName())
- DD->addAccelName(GV.getLinkageName(), *VariableDIE);
+ if (GV->getLinkageName() != "" && GV->getName() != GV->getLinkageName())
+ DD->addAccelName(GV->getLinkageName(), *VariableDIE);
}
- addGlobalName(GV.getName(), *VariableDIE, DeclContext);
return VariableDIE;
}
CURanges.back().setEnd(Range.getEnd());
}
-void DwarfCompileUnit::addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label,
- const MCSymbol *Sec) {
+DIE::value_iterator
+DwarfCompileUnit::addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
+ const MCSymbol *Label, const MCSymbol *Sec) {
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- addLabel(Die, Attribute,
- DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
- : dwarf::DW_FORM_data4,
- Label);
- else
- addSectionDelta(Die, Attribute, Label, Sec);
+ return addLabel(Die, Attribute,
+ DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
+ : dwarf::DW_FORM_data4,
+ Label);
+ return addSectionDelta(Die, Attribute, Label, Sec);
}
-void DwarfCompileUnit::initStmtList(MCSymbol *DwarfLineSectionSym) {
+void DwarfCompileUnit::initStmtList() {
// Define start line table label for each Compile Unit.
MCSymbol *LineTableStartSym =
- Asm->OutStreamer.getDwarfLineTableSymbol(getUniqueID());
-
- stmtListIndex = UnitDie.getValues().size();
+ Asm->OutStreamer->getDwarfLineTableSymbol(getUniqueID());
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section. For split dwarf this is
// left in the skeleton CU and so not included.
// The line table entries are not always emitted in assembly, so it
// is not okay to use line_table_start here.
- addSectionLabel(UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym,
- DwarfLineSectionSym);
+ const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
+ StmtListValue =
+ addSectionLabel(UnitDie, dwarf::DW_AT_stmt_list, LineTableStartSym,
+ TLOF.getDwarfLineSection()->getBeginSymbol());
}
void DwarfCompileUnit::applyStmtList(DIE &D) {
- D.addValue(dwarf::DW_AT_stmt_list,
- UnitDie.getAbbrev().getData()[stmtListIndex].getForm(),
- UnitDie.getValues()[stmtListIndex]);
+ D.addValue(DIEValueAllocator, *StmtListValue);
}
void DwarfCompileUnit::attachLowHighPC(DIE &D, const MCSymbol *Begin,
// 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 &DwarfCompileUnit::updateSubprogramScopeDIE(DISubprogram SP) {
- DIE *SPDie = getOrCreateSubprogramDIE(SP);
+DIE &DwarfCompileUnit::updateSubprogramScopeDIE(const DISubprogram *SP) {
+ DIE *SPDie = getOrCreateSubprogramDIE(SP, includeMinimalInlineScopes());
- attachLowHighPC(*SPDie, DD->getFunctionBeginSym(), DD->getFunctionEndSym());
+ attachLowHighPC(*SPDie, Asm->getFunctionBegin(), Asm->getFunctionEnd());
if (!DD->getCurrentFunction()->getTarget().Options.DisableFramePointerElim(
*DD->getCurrentFunction()))
addFlag(*SPDie, dwarf::DW_AT_APPLE_omit_frame_ptr);
// Only include DW_AT_frame_base in full debug info
- if (getCUNode().getEmissionKind() != DIBuilder::LineTablesOnly) {
- const TargetRegisterInfo *RI =
- Asm->TM.getSubtargetImpl()->getRegisterInfo();
+ if (!includeMinimalInlineScopes()) {
+ const TargetRegisterInfo *RI = Asm->MF->getSubtarget().getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
- addAddress(*SPDie, dwarf::DW_AT_frame_base, Location);
+ if (RI->isPhysicalRegister(Location.getReg()))
+ addAddress(*SPDie, dwarf::DW_AT_frame_base, Location);
}
// Add name to the name table, we do this here because we're guaranteed
// Construct a DIE for this scope.
void DwarfCompileUnit::constructScopeDIE(
- LexicalScope *Scope, SmallVectorImpl<std::unique_ptr<DIE>> &FinalChildren) {
+ LexicalScope *Scope, SmallVectorImpl<DIE *> &FinalChildren) {
if (!Scope || !Scope->getScopeNode())
return;
- DIScope DS(Scope->getScopeNode());
+ auto *DS = Scope->getScopeNode();
- assert((Scope->getInlinedAt() || !DS.isSubprogram()) &&
+ assert((Scope->getInlinedAt() || !isa<DISubprogram>(DS)) &&
"Only handle inlined subprograms here, use "
"constructSubprogramScopeDIE for non-inlined "
"subprograms");
- SmallVector<std::unique_ptr<DIE>, 8> Children;
+ SmallVector<DIE *, 8> Children;
// We try to create the scope DIE first, then the children DIEs. This will
// avoid creating un-used children then removing them later when we find out
// the scope DIE is null.
- std::unique_ptr<DIE> ScopeDIE;
- if (Scope->getParent() && DS.isSubprogram()) {
+ DIE *ScopeDIE;
+ if (Scope->getParent() && isa<DISubprogram>(DS)) {
ScopeDIE = constructInlinedScopeDIE(Scope);
if (!ScopeDIE)
return;
// null and the children will be added to the scope DIE.
createScopeChildrenDIE(Scope, Children, &ChildScopeCount);
- // There is no need to emit empty lexical block DIE.
- for (const auto &E : DD->findImportedEntitiesForScope(DS))
- Children.push_back(
- constructImportedEntityDIE(DIImportedEntity(E.second)));
+ // Skip imported directives in gmlt-like data.
+ if (!includeMinimalInlineScopes()) {
+ // There is no need to emit empty lexical block DIE.
+ for (const auto &E : DD->findImportedEntitiesForScope(DS))
+ Children.push_back(
+ constructImportedEntityDIE(cast<DIImportedEntity>(E.second)));
+ }
+
// If there are only other scopes as children, put them directly in the
// parent instead, as this scope would serve no purpose.
if (Children.size() == ChildScopeCount) {
FinalChildren.push_back(std::move(ScopeDIE));
}
-void DwarfCompileUnit::addSectionDelta(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Hi, const MCSymbol *Lo) {
- DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
- Die.addValue(Attribute, DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
- : dwarf::DW_FORM_data4,
- Value);
+DIE::value_iterator
+DwarfCompileUnit::addSectionDelta(DIE &Die, dwarf::Attribute Attribute,
+ const MCSymbol *Hi, const MCSymbol *Lo) {
+ return Die.addValue(DIEValueAllocator, Attribute,
+ DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
+ : dwarf::DW_FORM_data4,
+ new (DIEValueAllocator) DIEDelta(Hi, Lo));
}
-void
-DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
- const SmallVectorImpl<InsnRange> &Range) {
+void DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
+ SmallVector<RangeSpan, 2> Range) {
+ const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
+
// Emit offset in .debug_range as a relocatable label. emitDIE will handle
// emitting it appropriately.
- MCSymbol *RangeSym =
- Asm->GetTempSymbol("debug_ranges", DD->getNextRangeNumber());
+ const MCSymbol *RangeSectionSym =
+ TLOF.getDwarfRangesSection()->getBeginSymbol();
- auto *RangeSectionSym = DD->getRangeSectionSym();
+ RangeSpanList List(Asm->createTempSymbol("debug_ranges"), std::move(Range));
// Under fission, ranges are specified by constant offsets relative to the
// CU's DW_AT_GNU_ranges_base.
- if (DD->useSplitDwarf())
- addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, RangeSym, RangeSectionSym);
+ if (isDwoUnit())
+ addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
+ RangeSectionSym);
else
- addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, RangeSym, RangeSectionSym);
-
- RangeSpanList List(RangeSym);
- for (const InsnRange &R : Range)
- List.addRange(RangeSpan(DD->getLabelBeforeInsn(R.first),
- DD->getLabelAfterInsn(R.second)));
+ addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
+ RangeSectionSym);
// Add the range list to the set of ranges to be emitted.
- addRangeList(std::move(List));
+ (Skeleton ? Skeleton : this)->CURangeLists.push_back(std::move(List));
+}
+
+void DwarfCompileUnit::attachRangesOrLowHighPC(
+ DIE &Die, SmallVector<RangeSpan, 2> Ranges) {
+ if (Ranges.size() == 1) {
+ const auto &single = Ranges.front();
+ attachLowHighPC(Die, single.getStart(), single.getEnd());
+ } else
+ addScopeRangeList(Die, std::move(Ranges));
}
void DwarfCompileUnit::attachRangesOrLowHighPC(
DIE &Die, const SmallVectorImpl<InsnRange> &Ranges) {
- assert(!Ranges.empty());
- if (Ranges.size() == 1)
- attachLowHighPC(Die, DD->getLabelBeforeInsn(Ranges.front().first),
- DD->getLabelAfterInsn(Ranges.front().second));
- else
- addScopeRangeList(Die, Ranges);
+ SmallVector<RangeSpan, 2> List;
+ List.reserve(Ranges.size());
+ for (const InsnRange &R : Ranges)
+ List.push_back(RangeSpan(DD->getLabelBeforeInsn(R.first),
+ DD->getLabelAfterInsn(R.second)));
+ attachRangesOrLowHighPC(Die, std::move(List));
}
// This scope represents inlined body of a function. Construct DIE to
// represent this concrete inlined copy of the function.
-std::unique_ptr<DIE>
-DwarfCompileUnit::constructInlinedScopeDIE(LexicalScope *Scope) {
+DIE *DwarfCompileUnit::constructInlinedScopeDIE(LexicalScope *Scope) {
assert(Scope->getScopeNode());
- DIScope DS(Scope->getScopeNode());
- DISubprogram InlinedSP = getDISubprogram(DS);
+ auto *DS = Scope->getScopeNode();
+ auto *InlinedSP = getDISubprogram(DS);
// Find the subprogram's DwarfCompileUnit in the SPMap in case the subprogram
// was inlined from another compile unit.
DIE *OriginDIE = DU->getAbstractSPDies()[InlinedSP];
assert(OriginDIE && "Unable to find original DIE for an inlined subprogram.");
- auto ScopeDIE = make_unique<DIE>(dwarf::DW_TAG_inlined_subroutine);
+ auto ScopeDIE = DIE::get(DIEValueAllocator, dwarf::DW_TAG_inlined_subroutine);
addDIEEntry(*ScopeDIE, dwarf::DW_AT_abstract_origin, *OriginDIE);
attachRangesOrLowHighPC(*ScopeDIE, Scope->getRanges());
// Add the call site information to the DIE.
- DILocation DL(Scope->getInlinedAt());
+ const DILocation *IA = Scope->getInlinedAt();
addUInt(*ScopeDIE, dwarf::DW_AT_call_file, None,
- getOrCreateSourceID(DL.getFilename(), DL.getDirectory()));
- addUInt(*ScopeDIE, dwarf::DW_AT_call_line, None, DL.getLineNumber());
+ getOrCreateSourceID(IA->getFilename(), IA->getDirectory()));
+ addUInt(*ScopeDIE, dwarf::DW_AT_call_line, None, IA->getLine());
// 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.
// Construct new DW_TAG_lexical_block for this scope and attach
// DW_AT_low_pc/DW_AT_high_pc labels.
-std::unique_ptr<DIE>
-DwarfCompileUnit::constructLexicalScopeDIE(LexicalScope *Scope) {
+DIE *DwarfCompileUnit::constructLexicalScopeDIE(LexicalScope *Scope) {
if (DD->isLexicalScopeDIENull(Scope))
return nullptr;
- auto ScopeDIE = make_unique<DIE>(dwarf::DW_TAG_lexical_block);
+ auto ScopeDIE = DIE::get(DIEValueAllocator, dwarf::DW_TAG_lexical_block);
if (Scope->isAbstractScope())
return ScopeDIE;
}
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-std::unique_ptr<DIE> DwarfCompileUnit::constructVariableDIE(DbgVariable &DV,
- bool Abstract) {
+DIE *DwarfCompileUnit::constructVariableDIE(DbgVariable &DV, bool Abstract) {
auto D = constructVariableDIEImpl(DV, Abstract);
DV.setDIE(*D);
return D;
}
-std::unique_ptr<DIE>
-DwarfCompileUnit::constructVariableDIEImpl(const DbgVariable &DV,
- bool Abstract) {
+DIE *DwarfCompileUnit::constructVariableDIEImpl(const DbgVariable &DV,
+ bool Abstract) {
// Define variable debug information entry.
- auto VariableDie = make_unique<DIE>(DV.getTag());
+ auto VariableDie = DIE::get(DIEValueAllocator, DV.getTag());
if (Abstract) {
applyVariableAttributes(DV, *VariableDie);
// Add variable address.
- unsigned Offset = DV.getDotDebugLocOffset();
+ unsigned Offset = DV.getDebugLocListIndex();
if (Offset != ~0U) {
addLocationList(*VariableDie, dwarf::DW_AT_location, Offset);
return VariableDie;
}
// .. else use frame index.
- int FI = DV.getFrameIndex();
- if (FI != ~0) {
+ if (DV.getFrameIndex().empty())
+ return VariableDie;
+
+ auto Expr = DV.getExpression().begin();
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
+ DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
+ for (auto FI : DV.getFrameIndex()) {
unsigned FrameReg = 0;
- const TargetFrameLowering *TFI =
- Asm->TM.getSubtargetImpl()->getFrameLowering();
+ const TargetFrameLowering *TFI = Asm->MF->getSubtarget().getFrameLowering();
int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
- MachineLocation Location(FrameReg, Offset);
- addVariableAddress(DV, *VariableDie, Location);
+ assert(Expr != DV.getExpression().end() &&
+ "Wrong number of expressions");
+ DwarfExpr.AddMachineRegIndirect(FrameReg, Offset);
+ DwarfExpr.AddExpression((*Expr)->expr_op_begin(), (*Expr)->expr_op_end());
+ ++Expr;
}
+ addBlock(*VariableDie, dwarf::DW_AT_location, Loc);
return VariableDie;
}
-std::unique_ptr<DIE> DwarfCompileUnit::constructVariableDIE(
- DbgVariable &DV, const LexicalScope &Scope, DIE *&ObjectPointer) {
+DIE *DwarfCompileUnit::constructVariableDIE(DbgVariable &DV,
+ const LexicalScope &Scope,
+ DIE *&ObjectPointer) {
auto Var = constructVariableDIE(DV, Scope.isAbstractScope());
if (DV.isObjectPointer())
- ObjectPointer = Var.get();
+ ObjectPointer = Var;
return Var;
}
-DIE *DwarfCompileUnit::createScopeChildrenDIE(
- LexicalScope *Scope, SmallVectorImpl<std::unique_ptr<DIE>> &Children,
- unsigned *ChildScopeCount) {
+DIE *DwarfCompileUnit::createScopeChildrenDIE(LexicalScope *Scope,
+ SmallVectorImpl<DIE *> &Children,
+ unsigned *ChildScopeCount) {
DIE *ObjectPointer = nullptr;
for (DbgVariable *DV : DU->getScopeVariables().lookup(Scope))
assert(Scope && Scope->getScopeNode());
assert(!Scope->getInlinedAt());
assert(!Scope->isAbstractScope());
- DISubprogram Sub(Scope->getScopeNode());
-
- assert(Sub.isSubprogram());
+ auto *Sub = cast<DISubprogram>(Scope->getScopeNode());
DD->getProcessedSPNodes().insert(Sub);
DIE &ScopeDIE = updateSubprogramScopeDIE(Sub);
// If this is a variadic function, add an unspecified parameter.
- DITypeArray FnArgs = Sub.getType().getTypeArray();
+ DITypeRefArray FnArgs = Sub->getType()->getTypeArray();
// Collect lexical scope children first.
// ObjectPointer might be a local (non-argument) local variable if it's a
// If we have a single element of null, it is a function that returns void.
// If we have more than one elements and the last one is null, it is a
// variadic function.
- if (FnArgs.getNumElements() > 1 &&
- !FnArgs.getElement(FnArgs.getNumElements() - 1))
- ScopeDIE.addChild(make_unique<DIE>(dwarf::DW_TAG_unspecified_parameters));
+ if (FnArgs.size() > 1 && !FnArgs[FnArgs.size() - 1] &&
+ !includeMinimalInlineScopes())
+ ScopeDIE.addChild(
+ DIE::get(DIEValueAllocator, dwarf::DW_TAG_unspecified_parameters));
}
DIE *DwarfCompileUnit::createAndAddScopeChildren(LexicalScope *Scope,
DIE &ScopeDIE) {
// We create children when the scope DIE is not null.
- SmallVector<std::unique_ptr<DIE>, 8> Children;
+ SmallVector<DIE *, 8> Children;
DIE *ObjectPointer = createScopeChildrenDIE(Scope, Children);
// Add children
if (AbsDef)
return;
- DISubprogram SP(Scope->getScopeNode());
+ auto *SP = cast<DISubprogram>(Scope->getScopeNode());
DIE *ContextDIE;
+ if (includeMinimalInlineScopes())
+ ContextDIE = &getUnitDie();
// Some of this is duplicated from DwarfUnit::getOrCreateSubprogramDIE, with
- // the important distinction that the DIDescriptor is not associated with the
- // DIE (since the DIDescriptor will be associated with the concrete DIE, if
+ // the important distinction that the debug node is not associated with the
+ // DIE (since the debug node will be associated with the concrete DIE, if
// any). It could be refactored to some common utility function.
- if (DISubprogram SPDecl = SP.getFunctionDeclaration()) {
+ else if (auto *SPDecl = SP->getDeclaration()) {
ContextDIE = &getUnitDie();
getOrCreateSubprogramDIE(SPDecl);
} else
- ContextDIE = getOrCreateContextDIE(resolve(SP.getContext()));
+ ContextDIE = getOrCreateContextDIE(resolve(SP->getScope()));
- // Passing null as the associated DIDescriptor because the abstract definition
+ // Passing null as the associated node because the abstract definition
// shouldn't be found by lookup.
- AbsDef =
- &createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, DIDescriptor());
+ AbsDef = &createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, nullptr);
applySubprogramAttributesToDefinition(SP, *AbsDef);
- if (getCUNode().getEmissionKind() != DIBuilder::LineTablesOnly)
+ if (!includeMinimalInlineScopes())
addUInt(*AbsDef, dwarf::DW_AT_inline, None, dwarf::DW_INL_inlined);
if (DIE *ObjectPointer = createAndAddScopeChildren(Scope, *AbsDef))
addDIEEntry(*AbsDef, dwarf::DW_AT_object_pointer, *ObjectPointer);
}
-std::unique_ptr<DIE>
-DwarfCompileUnit::constructImportedEntityDIE(const DIImportedEntity &Module) {
- assert(Module.Verify() &&
- "Use one of the MDNode * overloads to handle invalid metadata");
- std::unique_ptr<DIE> IMDie = make_unique<DIE>((dwarf::Tag)Module.getTag());
- insertDIE(Module, IMDie.get());
+DIE *DwarfCompileUnit::constructImportedEntityDIE(
+ const DIImportedEntity *Module) {
+ DIE *IMDie = DIE::get(DIEValueAllocator, (dwarf::Tag)Module->getTag());
+ insertDIE(Module, IMDie);
DIE *EntityDie;
- DIDescriptor Entity = resolve(Module.getEntity());
- if (Entity.isNameSpace())
- EntityDie = getOrCreateNameSpace(DINameSpace(Entity));
- else if (Entity.isSubprogram())
- EntityDie = getOrCreateSubprogramDIE(DISubprogram(Entity));
- else if (Entity.isType())
- EntityDie = getOrCreateTypeDIE(DIType(Entity));
+ auto *Entity = resolve(Module->getEntity());
+ if (auto *NS = dyn_cast<DINamespace>(Entity))
+ EntityDie = getOrCreateNameSpace(NS);
+ else if (auto *M = dyn_cast<DIModule>(Entity))
+ EntityDie = getOrCreateModule(M);
+ else if (auto *SP = dyn_cast<DISubprogram>(Entity))
+ EntityDie = getOrCreateSubprogramDIE(SP);
+ else if (auto *T = dyn_cast<DIType>(Entity))
+ EntityDie = getOrCreateTypeDIE(T);
+ else if (auto *GV = dyn_cast<DIGlobalVariable>(Entity))
+ EntityDie = getOrCreateGlobalVariableDIE(GV);
else
EntityDie = getDIE(Entity);
assert(EntityDie);
- addSourceLine(*IMDie, Module.getLineNumber(),
- Module.getContext().getFilename(),
- Module.getContext().getDirectory());
+ addSourceLine(*IMDie, Module->getLine(), Module->getScope()->getFilename(),
+ Module->getScope()->getDirectory());
addDIEEntry(*IMDie, dwarf::DW_AT_import, *EntityDie);
- StringRef Name = Module.getName();
+ StringRef Name = Module->getName();
if (!Name.empty())
addString(*IMDie, dwarf::DW_AT_name, Name);
return IMDie;
}
-void DwarfCompileUnit::finishSubprogramDefinition(DISubprogram SP) {
+void DwarfCompileUnit::finishSubprogramDefinition(const DISubprogram *SP) {
DIE *D = getDIE(SP);
if (DIE *AbsSPDIE = DU->getAbstractSPDies().lookup(SP)) {
if (D)
// If this subprogram has an abstract definition, reference that
addDIEEntry(*D, dwarf::DW_AT_abstract_origin, *AbsSPDIE);
} else {
- if (!D && getCUNode().getEmissionKind() != DIBuilder::LineTablesOnly)
+ if (!D && !includeMinimalInlineScopes())
// Lazily construct the subprogram if we didn't see either concrete or
// inlined versions during codegen. (except in -gmlt ^ where we want
// to omit these entirely)
applySubprogramAttributesToDefinition(SP, *D);
}
}
-void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
- assert(SP.isSubprogram() && "CU's subprogram list contains a non-subprogram");
- assert(SP.isDefinition() &&
+void DwarfCompileUnit::collectDeadVariables(const DISubprogram *SP) {
+ assert(SP && "CU's subprogram list contains a non-subprogram");
+ assert(SP->isDefinition() &&
"CU's subprogram list contains a subprogram declaration");
- DIArray Variables = SP.getVariables();
- if (Variables.getNumElements() == 0)
+ auto Variables = SP->getVariables();
+ if (Variables.size() == 0)
return;
DIE *SPDIE = DU->getAbstractSPDies().lookup(SP);
if (!SPDIE)
SPDIE = getDIE(SP);
assert(SPDIE);
- for (unsigned vi = 0, ve = Variables.getNumElements(); vi != ve; ++vi) {
- DIVariable DV(Variables.getElement(vi));
- assert(DV.isVariable());
- DbgVariable NewVar(DV, DIExpression(nullptr), DD);
+ for (const DILocalVariable *DV : Variables) {
+ DbgVariable NewVar(DV, /* IA */ nullptr, DD);
auto VariableDie = constructVariableDIE(NewVar);
applyVariableAttributes(NewVar, *VariableDie);
SPDIE->addChild(std::move(VariableDie));
}
}
-void DwarfCompileUnit::emitHeader(const MCSymbol *ASectionSym) const {
+void DwarfCompileUnit::emitHeader(bool UseOffsets) {
// Don't bother labeling the .dwo unit, as its offset isn't used.
- if (!Skeleton)
- Asm->OutStreamer.EmitLabel(LabelBegin);
+ if (!Skeleton) {
+ LabelBegin = Asm->createTempSymbol("cu_begin");
+ Asm->OutStreamer->EmitLabel(LabelBegin);
+ }
- DwarfUnit::emitHeader(ASectionSym);
+ DwarfUnit::emitHeader(UseOffsets);
}
+/// addGlobalName - Add a new global name to the compile unit.
+void DwarfCompileUnit::addGlobalName(StringRef Name, DIE &Die,
+ const DIScope *Context) {
+ if (includeMinimalInlineScopes())
+ return;
+ std::string FullName = getParentContextString(Context) + Name.str();
+ GlobalNames[FullName] = &Die;
+}
+/// Add a new global type to the unit.
+void DwarfCompileUnit::addGlobalType(const DIType *Ty, const DIE &Die,
+ const DIScope *Context) {
+ if (includeMinimalInlineScopes())
+ return;
+ std::string FullName = getParentContextString(Context) + Ty->getName().str();
+ GlobalTypes[FullName] = &Die;
+}
+
+/// addVariableAddress - Add DW_AT_location attribute for a
+/// DbgVariable based on provided MachineLocation.
+void DwarfCompileUnit::addVariableAddress(const DbgVariable &DV, DIE &Die,
+ MachineLocation Location) {
+ if (DV.hasComplexAddress())
+ addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
+ else if (DV.isBlockByrefVariable())
+ addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
+ else
+ addAddress(Die, dwarf::DW_AT_location, Location);
+}
+
+/// Add an address attribute to a die based on the location provided.
+void DwarfCompileUnit::addAddress(DIE &Die, dwarf::Attribute Attribute,
+ const MachineLocation &Location) {
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
+
+ bool validReg;
+ if (Location.isReg())
+ validReg = addRegisterOpPiece(*Loc, Location.getReg());
+ else
+ validReg = addRegisterOffset(*Loc, Location.getReg(), Location.getOffset());
+
+ if (!validReg)
+ return;
+
+ // Now attach the location information to the DIE.
+ addBlock(Die, Attribute, Loc);
+}
+
+/// Start with the address based on the location provided, and generate the
+/// DWARF information necessary to find the actual variable given the extra
+/// address information encoded in the DbgVariable, starting from the starting
+/// location. Add the DWARF information to the die.
+void DwarfCompileUnit::addComplexAddress(const DbgVariable &DV, DIE &Die,
+ dwarf::Attribute Attribute,
+ const MachineLocation &Location) {
+ DIELoc *Loc = new (DIEValueAllocator) DIELoc;
+ DIEDwarfExpression DwarfExpr(*Asm, *this, *Loc);
+ assert(DV.getExpression().size() == 1);
+ const DIExpression *Expr = DV.getExpression().back();
+ bool ValidReg;
+ if (Location.getOffset()) {
+ ValidReg = DwarfExpr.AddMachineRegIndirect(Location.getReg(),
+ Location.getOffset());
+ if (ValidReg)
+ DwarfExpr.AddExpression(Expr->expr_op_begin(), Expr->expr_op_end());
+ } else
+ ValidReg = DwarfExpr.AddMachineRegExpression(Expr, Location.getReg());
+
+ // Now attach the location information to the DIE.
+ if (ValidReg)
+ addBlock(Die, Attribute, Loc);
+}
+
+/// Add a Dwarf loclistptr attribute data and value.
+void DwarfCompileUnit::addLocationList(DIE &Die, dwarf::Attribute Attribute,
+ unsigned Index) {
+ dwarf::Form Form = DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
+ : dwarf::DW_FORM_data4;
+ Die.addValue(DIEValueAllocator, Attribute, Form, DIELocList(Index));
+}
+
+void DwarfCompileUnit::applyVariableAttributes(const DbgVariable &Var,
+ DIE &VariableDie) {
+ StringRef Name = Var.getName();
+ if (!Name.empty())
+ addString(VariableDie, dwarf::DW_AT_name, Name);
+ addSourceLine(VariableDie, Var.getVariable());
+ addType(VariableDie, Var.getType());
+ if (Var.isArtificial())
+ addFlag(VariableDie, dwarf::DW_AT_artificial);
+}
+
+/// Add a Dwarf expression attribute data and value.
+void DwarfCompileUnit::addExpr(DIELoc &Die, dwarf::Form Form,
+ const MCExpr *Expr) {
+ Die.addValue(DIEValueAllocator, (dwarf::Attribute)0, Form, DIEExpr(Expr));
+}
+
+void DwarfCompileUnit::applySubprogramAttributesToDefinition(
+ const DISubprogram *SP, DIE &SPDie) {
+ auto *SPDecl = SP->getDeclaration();
+ auto *Context = resolve(SPDecl ? SPDecl->getScope() : SP->getScope());
+ applySubprogramAttributes(SP, SPDie, includeMinimalInlineScopes());
+ addGlobalName(SP->getName(), SPDie, Context);
+}
+
+bool DwarfCompileUnit::isDwoUnit() const {
+ return DD->useSplitDwarf() && Skeleton;
+}
+
+bool DwarfCompileUnit::includeMinimalInlineScopes() const {
+ return getCUNode()->getEmissionKind() == DIBuilder::LineTablesOnly ||
+ (DD->useSplitDwarf() && !Skeleton);
+}
} // end llvm namespace
projects / oota-llvm.git / blobdiff