Module Name: src
Committed By: snj
Date: Thu Jun 4 20:19:12 UTC 2015
Modified Files:
src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter [netbsd-7]:
DwarfCompileUnit.cpp DwarfCompileUnit.h
Log Message:
Update LLVM to 3.6.1, requested by joerg in ticket 824.
To generate a diff of this commit:
cvs rdiff -u -r1.1.1.2.2.1 -r1.1.1.2.2.2 \
src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
\
src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
diff -u src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp:1.1.1.2.2.1 src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp:1.1.1.2.2.2
--- src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp:1.1.1.2.2.1 Thu Jun 4 20:04:57 2015
+++ src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp Thu Jun 4 20:19:12 2015
@@ -1,71 +1,1481 @@
+//===-- llvm/CodeGen/DwarfCompileUnit.cpp - Dwarf Compile Unit ------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains support for constructing a dwarf compile unit.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "dwarfdebug"
+
#include "DwarfCompileUnit.h"
-#include "DwarfExpression.h"
-#include "llvm/CodeGen/MachineFunction.h"
+#include "DwarfAccelTable.h"
+#include "DwarfDebug.h"
+#include "llvm/ADT/APFloat.h"
+#include "llvm/DIBuilder.h"
+#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/GlobalVariable.h"
-#include "llvm/IR/Instruction.h"
-#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCStreamer.h"
+#include "llvm/Target/Mangler.h"
#include "llvm/Target/TargetFrameLowering.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
-namespace llvm {
+using namespace llvm;
-DwarfCompileUnit::DwarfCompileUnit(unsigned UID, DICompileUnit Node,
- AsmPrinter *A, DwarfDebug *DW,
- DwarfFile *DWU)
- : DwarfUnit(UID, dwarf::DW_TAG_compile_unit, Node, A, DW, DWU),
- Skeleton(nullptr), LabelBegin(nullptr), BaseAddress(nullptr) {
- insertDIE(Node, &getUnitDie());
+/// CompileUnit - Compile unit constructor.
+CompileUnit::CompileUnit(unsigned UID, DIE *D, DICompileUnit Node,
+ AsmPrinter *A, DwarfDebug *DW, DwarfUnits *DWU)
+ : UniqueID(UID), Node(Node), CUDie(D), Asm(A), DD(DW), DU(DWU),
+ IndexTyDie(0), DebugInfoOffset(0) {
+ DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
+ insertDIE(Node, D);
+}
+
+/// ~CompileUnit - Destructor for compile unit.
+CompileUnit::~CompileUnit() {
+ for (unsigned j = 0, M = DIEBlocks.size(); j < M; ++j)
+ DIEBlocks[j]->~DIEBlock();
+}
+
+/// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
+/// information entry.
+DIEEntry *CompileUnit::createDIEEntry(DIE *Entry) {
+ DIEEntry *Value = new (DIEValueAllocator) DIEEntry(Entry);
+ return Value;
+}
+
+/// getDefaultLowerBound - Return the default lower bound for an array. If the
+/// DWARF version doesn't handle the language, return -1.
+int64_t CompileUnit::getDefaultLowerBound() const {
+ switch (getLanguage()) {
+ default:
+ break;
+
+ case dwarf::DW_LANG_C89:
+ case dwarf::DW_LANG_C99:
+ case dwarf::DW_LANG_C:
+ case dwarf::DW_LANG_C_plus_plus:
+ case dwarf::DW_LANG_ObjC:
+ case dwarf::DW_LANG_ObjC_plus_plus:
+ return 0;
+
+ case dwarf::DW_LANG_Fortran77:
+ case dwarf::DW_LANG_Fortran90:
+ case dwarf::DW_LANG_Fortran95:
+ return 1;
+
+ // The languages below have valid values only if the DWARF version >= 4.
+ case dwarf::DW_LANG_Java:
+ case dwarf::DW_LANG_Python:
+ case dwarf::DW_LANG_UPC:
+ case dwarf::DW_LANG_D:
+ if (dwarf::DWARF_VERSION >= 4)
+ return 0;
+ break;
+
+ case dwarf::DW_LANG_Ada83:
+ case dwarf::DW_LANG_Ada95:
+ case dwarf::DW_LANG_Cobol74:
+ case dwarf::DW_LANG_Cobol85:
+ case dwarf::DW_LANG_Modula2:
+ case dwarf::DW_LANG_Pascal83:
+ case dwarf::DW_LANG_PLI:
+ if (dwarf::DWARF_VERSION >= 4)
+ return 1;
+ break;
+ }
+
+ return -1;
}
-/// addLabelAddress - Add a dwarf label attribute data and value using
-/// DW_FORM_addr or DW_FORM_GNU_addr_index.
+/// Check whether the DIE for this MDNode can be shared across CUs.
+static bool isShareableAcrossCUs(DIDescriptor D) {
+ // When the MDNode can be part of the type system, the DIE can be
+ // shared across CUs.
+ return D.isType() ||
+ (D.isSubprogram() && !DISubprogram(D).isDefinition());
+}
+
+/// getDIE - Returns the debug information entry map slot for the
+/// specified debug variable. We delegate the request to DwarfDebug
+/// when the DIE for this MDNode can be shared across CUs. The mappings
+/// will be kept in DwarfDebug for shareable DIEs.
+DIE *CompileUnit::getDIE(DIDescriptor D) const {
+ if (isShareableAcrossCUs(D))
+ return DD->getDIE(D);
+ return MDNodeToDieMap.lookup(D);
+}
+
+/// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
+/// when the DIE for this MDNode can be shared across CUs. The mappings
+/// will be kept in DwarfDebug for shareable DIEs.
+void CompileUnit::insertDIE(DIDescriptor Desc, DIE *D) {
+ if (isShareableAcrossCUs(Desc)) {
+ DD->insertDIE(Desc, D);
+ return;
+ }
+ MDNodeToDieMap.insert(std::make_pair(Desc, D));
+}
+
+/// addFlag - Add a flag that is true.
+void CompileUnit::addFlag(DIE *Die, dwarf::Attribute Attribute) {
+ if (DD->getDwarfVersion() >= 4)
+ Die->addValue(Attribute, dwarf::DW_FORM_flag_present, DIEIntegerOne);
+ else
+ Die->addValue(Attribute, dwarf::DW_FORM_flag, DIEIntegerOne);
+}
+
+/// addUInt - Add an unsigned integer attribute data and value.
///
-void DwarfCompileUnit::addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label) {
+void CompileUnit::addUInt(DIE *Die, dwarf::Attribute Attribute,
+ Optional<dwarf::Form> Form, uint64_t Integer) {
+ if (!Form)
+ Form = DIEInteger::BestForm(false, Integer);
+ DIEValue *Value = Integer == 1 ? DIEIntegerOne : new (DIEValueAllocator)
+ DIEInteger(Integer);
+ Die->addValue(Attribute, *Form, Value);
+}
- // Don't use the address pool in non-fission or in the skeleton unit itself.
- // FIXME: Once GDB supports this, it's probably worthwhile using the address
- // pool from the skeleton - maybe even in non-fission (possibly fewer
- // relocations by sharing them in the pool, but we have other ideas about how
- // to reduce the number of relocations as well/instead).
- if (!DD->useSplitDwarf() || !Skeleton)
- return addLocalLabelAddress(Die, Attribute, Label);
+void CompileUnit::addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer) {
+ addUInt(Block, (dwarf::Attribute)0, Form, Integer);
+}
- if (Label)
- DD->addArangeLabel(SymbolCU(this, Label));
+/// addSInt - Add an signed integer attribute data and value.
+///
+void CompileUnit::addSInt(DIE *Die, dwarf::Attribute Attribute,
+ Optional<dwarf::Form> Form, int64_t Integer) {
+ if (!Form)
+ Form = DIEInteger::BestForm(true, Integer);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(Integer);
+ Die->addValue(Attribute, *Form, Value);
+}
+
+void CompileUnit::addSInt(DIEBlock *Die, Optional<dwarf::Form> Form,
+ int64_t Integer) {
+ addSInt(Die, (dwarf::Attribute)0, Form, Integer);
+}
+
+/// addString - Add a string attribute data and value. We always emit a
+/// reference to the string pool instead of immediate strings so that DIEs have
+/// more predictable sizes. In the case of split dwarf we emit an index
+/// into another table which gets us the static offset into the string
+/// table.
+void CompileUnit::addString(DIE *Die, dwarf::Attribute Attribute,
+ StringRef String) {
+ DIEValue *Value;
+ dwarf::Form Form;
+ if (!DD->useSplitDwarf()) {
+ MCSymbol *Symb = DU->getStringPoolEntry(String);
+ if (Asm->needsRelocationsForDwarfStringPool())
+ Value = new (DIEValueAllocator) DIELabel(Symb);
+ else {
+ MCSymbol *StringPool = DU->getStringPoolSym();
+ Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
+ }
+ Form = dwarf::DW_FORM_strp;
+ } else {
+ unsigned idx = DU->getStringPoolIndex(String);
+ Value = new (DIEValueAllocator) DIEInteger(idx);
+ Form = dwarf::DW_FORM_GNU_str_index;
+ }
+ DIEValue *Str = new (DIEValueAllocator) DIEString(Value, String);
+ Die->addValue(Attribute, Form, Str);
+}
- unsigned idx = DD->getAddressPool().getIndex(Label);
- DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
- Die.addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
+/// addLocalString - Add a string attribute data and value. This is guaranteed
+/// to be in the local string pool instead of indirected.
+void CompileUnit::addLocalString(DIE *Die, dwarf::Attribute Attribute,
+ StringRef String) {
+ MCSymbol *Symb = DU->getStringPoolEntry(String);
+ DIEValue *Value;
+ if (Asm->needsRelocationsForDwarfStringPool())
+ Value = new (DIEValueAllocator) DIELabel(Symb);
+ else {
+ MCSymbol *StringPool = DU->getStringPoolSym();
+ Value = new (DIEValueAllocator) DIEDelta(Symb, StringPool);
+ }
+ Die->addValue(Attribute, dwarf::DW_FORM_strp, Value);
}
-void DwarfCompileUnit::addLocalLabelAddress(DIE &Die,
- dwarf::Attribute Attribute,
- const MCSymbol *Label) {
+/// addExpr - Add a Dwarf expression attribute data and value.
+///
+void CompileUnit::addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr) {
+ DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
+ Die->addValue((dwarf::Attribute)0, Form, Value);
+}
+
+/// addLabel - Add a Dwarf label attribute data and value.
+///
+void CompileUnit::addLabel(DIE *Die, dwarf::Attribute Attribute,
+ dwarf::Form Form, const MCSymbol *Label) {
+ DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
+ Die->addValue(Attribute, Form, Value);
+}
+
+void CompileUnit::addLabel(DIEBlock *Die, dwarf::Form Form,
+ const MCSymbol *Label) {
+ addLabel(Die, (dwarf::Attribute)0, Form, Label);
+}
+
+/// addLabelAddress - Add a dwarf label attribute data and value using
+/// DW_FORM_addr or DW_FORM_GNU_addr_index.
+///
+void CompileUnit::addLabelAddress(DIE *Die, dwarf::Attribute Attribute,
+ MCSymbol *Label) {
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 (!DD->useSplitDwarf()) {
+ if (Label != NULL) {
+ DIEValue *Value = new (DIEValueAllocator) DIELabel(Label);
+ Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+ } else {
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(0);
+ Die->addValue(Attribute, dwarf::DW_FORM_addr, Value);
+ }
+ } else {
+ unsigned idx = DU->getAddrPoolIndex(Label);
+ DIEValue *Value = new (DIEValueAllocator) DIEInteger(idx);
+ Die->addValue(Attribute, dwarf::DW_FORM_GNU_addr_index, Value);
+ }
+}
+
+/// addOpAddress - Add a dwarf op address data and value using the
+/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
+///
+void CompileUnit::addOpAddress(DIEBlock *Die, const MCSymbol *Sym) {
+ DD->addArangeLabel(SymbolCU(this, Sym));
+ if (!DD->useSplitDwarf()) {
+ addUInt(Die, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
+ addLabel(Die, dwarf::DW_FORM_udata, Sym);
+ } else {
+ addUInt(Die, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_addr_index);
+ addUInt(Die, dwarf::DW_FORM_GNU_addr_index, DU->getAddrPoolIndex(Sym));
+ }
+}
+
+/// addDelta - Add a label delta attribute data and value.
+///
+void CompileUnit::addDelta(DIE *Die, dwarf::Attribute Attribute,
+ dwarf::Form Form, const MCSymbol *Hi,
+ const MCSymbol *Lo) {
+ DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
+ Die->addValue(Attribute, Form, Value);
+}
+
+/// addDIEEntry - Add a DIE attribute data and value.
+///
+void CompileUnit::addDIEEntry(DIE *Die, dwarf::Attribute Attribute,
+ DIE *Entry) {
+ addDIEEntry(Die, Attribute, createDIEEntry(Entry));
+}
+
+void CompileUnit::addDIEEntry(DIE *Die, dwarf::Attribute Attribute,
+ DIEEntry *Entry) {
+ const DIE *DieCU = Die->getCompileUnitOrNull();
+ const DIE *EntryCU = Entry->getEntry()->getCompileUnitOrNull();
+ if (!DieCU)
+ // We assume that Die belongs to this CU, if it is not linked to any CU yet.
+ DieCU = getCUDie();
+ if (!EntryCU)
+ EntryCU = getCUDie();
+ Die->addValue(Attribute, EntryCU == DieCU ? dwarf::DW_FORM_ref4
+ : dwarf::DW_FORM_ref_addr,
+ Entry);
+}
+
+/// Create a DIE with the given Tag, add the DIE to its parent, and
+/// call insertDIE if MD is not null.
+DIE *CompileUnit::createAndAddDIE(unsigned Tag, DIE &Parent, DIDescriptor N) {
+ DIE *Die = new DIE(Tag);
+ Parent.addChild(Die);
+ if (N)
+ insertDIE(N, Die);
+ return Die;
+}
+
+/// addBlock - Add block data.
+///
+void CompileUnit::addBlock(DIE *Die, dwarf::Attribute Attribute,
+ DIEBlock *Block) {
+ Block->ComputeSize(Asm);
+ DIEBlocks.push_back(Block); // Memoize so we can call the destructor later on.
+ Die->addValue(Attribute, Block->BestForm(), Block);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DIVariable V) {
+ // Verify variable.
+ if (!V.isVariable())
+ return;
+
+ unsigned Line = V.getLineNumber();
+ if (Line == 0)
+ return;
+ unsigned FileID =
+ DD->getOrCreateSourceID(V.getContext().getFilename(),
+ V.getContext().getDirectory(), getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DIGlobalVariable G) {
+ // Verify global variable.
+ if (!G.isGlobalVariable())
+ return;
+
+ unsigned Line = G.getLineNumber();
+ if (Line == 0)
+ return;
+ unsigned FileID =
+ DD->getOrCreateSourceID(G.getFilename(), G.getDirectory(), getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DISubprogram SP) {
+ // Verify subprogram.
+ if (!SP.isSubprogram())
+ return;
+
+ // If the line number is 0, don't add it.
+ unsigned Line = SP.getLineNumber();
+ if (Line == 0)
+ return;
+
+ unsigned FileID = DD->getOrCreateSourceID(SP.getFilename(), SP.getDirectory(),
+ getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DIType Ty) {
+ // Verify type.
+ if (!Ty.isType())
+ return;
+
+ unsigned Line = Ty.getLineNumber();
+ if (Line == 0)
+ return;
+ unsigned FileID = DD->getOrCreateSourceID(Ty.getFilename(), Ty.getDirectory(),
+ getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DIObjCProperty Ty) {
+ // Verify type.
+ if (!Ty.isObjCProperty())
+ return;
+
+ unsigned Line = Ty.getLineNumber();
+ if (Line == 0)
+ return;
+ DIFile File = Ty.getFile();
+ unsigned FileID = DD->getOrCreateSourceID(File.getFilename(),
+ File.getDirectory(), getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void CompileUnit::addSourceLine(DIE *Die, DINameSpace NS) {
+ // Verify namespace.
+ if (!NS.Verify())
+ return;
+
+ unsigned Line = NS.getLineNumber();
+ if (Line == 0)
+ return;
+ StringRef FN = NS.getFilename();
+
+ unsigned FileID =
+ DD->getOrCreateSourceID(FN, NS.getDirectory(), getUniqueID());
+ assert(FileID && "Invalid file id");
+ addUInt(Die, dwarf::DW_AT_decl_file, None, FileID);
+ addUInt(Die, dwarf::DW_AT_decl_line, None, Line);
+}
+
+/// addVariableAddress - Add DW_AT_location attribute for a
+/// DbgVariable based on provided MachineLocation.
+void CompileUnit::addVariableAddress(const DbgVariable &DV, DIE *Die,
+ MachineLocation Location) {
+ if (DV.variableHasComplexAddress())
+ 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,
+ DV.getVariable().isIndirect());
+}
+
+/// addRegisterOp - Add register operand.
+void CompileUnit::addRegisterOp(DIEBlock *TheDie, unsigned Reg) {
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
+ unsigned DWReg = RI->getDwarfRegNum(Reg, false);
+ if (DWReg < 32)
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_reg0 + DWReg);
+ else {
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_regx);
+ addUInt(TheDie, dwarf::DW_FORM_udata, DWReg);
+ }
+}
+
+/// addRegisterOffset - Add register offset.
+void CompileUnit::addRegisterOffset(DIEBlock *TheDie, unsigned Reg,
+ int64_t Offset) {
+ const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
+ unsigned DWReg = RI->getDwarfRegNum(Reg, false);
+ const TargetRegisterInfo *TRI = Asm->TM.getRegisterInfo();
+ if (Reg == TRI->getFrameRegister(*Asm->MF))
+ // If variable offset is based in frame register then use fbreg.
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_fbreg);
+ else if (DWReg < 32)
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_breg0 + DWReg);
+ else {
+ addUInt(TheDie, dwarf::DW_FORM_data1, dwarf::DW_OP_bregx);
+ addUInt(TheDie, dwarf::DW_FORM_udata, DWReg);
+ }
+ addSInt(TheDie, dwarf::DW_FORM_sdata, Offset);
+}
+
+/// addAddress - Add an address attribute to a die based on the location
+/// provided.
+void CompileUnit::addAddress(DIE *Die, dwarf::Attribute Attribute,
+ const MachineLocation &Location, bool Indirect) {
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+
+ if (Location.isReg() && !Indirect)
+ addRegisterOp(Block, Location.getReg());
+ else {
+ addRegisterOffset(Block, Location.getReg(), Location.getOffset());
+ if (Indirect && !Location.isReg()) {
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ }
+ }
+
+ // Now attach the location information to the DIE.
+ addBlock(Die, Attribute, Block);
+}
+
+/// addComplexAddress - 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 DIVariable, starting from
+/// the starting location. Add the DWARF information to the die.
+///
+void CompileUnit::addComplexAddress(const DbgVariable &DV, DIE *Die,
+ dwarf::Attribute Attribute,
+ const MachineLocation &Location) {
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ unsigned N = DV.getNumAddrElements();
+ unsigned i = 0;
+ if (Location.isReg()) {
+ if (N >= 2 && DV.getAddrElement(0) == DIBuilder::OpPlus) {
+ // If first address element is OpPlus then emit
+ // DW_OP_breg + Offset instead of DW_OP_reg + Offset.
+ addRegisterOffset(Block, Location.getReg(), DV.getAddrElement(1));
+ i = 2;
+ } else
+ addRegisterOp(Block, Location.getReg());
+ } else
+ addRegisterOffset(Block, Location.getReg(), Location.getOffset());
+
+ for (; i < N; ++i) {
+ uint64_t Element = DV.getAddrElement(i);
+ if (Element == DIBuilder::OpPlus) {
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, dwarf::DW_FORM_udata, DV.getAddrElement(++i));
+ } else if (Element == DIBuilder::OpDeref) {
+ if (!Location.isReg())
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ } else
+ llvm_unreachable("unknown DIBuilder Opcode");
+ }
+
+ // Now attach the location information to the DIE.
+ addBlock(Die, Attribute, Block);
+}
+
+/* Byref variables, in Blocks, are declared by the programmer as "SomeType
+ VarName;", but the compiler creates a __Block_byref_x_VarName struct, and
+ gives the variable VarName either the struct, or a pointer to the struct, as
+ its type. This is necessary for various behind-the-scenes things the
+ compiler needs to do with by-reference variables in Blocks.
+
+ However, as far as the original *programmer* is concerned, the variable
+ should still have type 'SomeType', as originally declared.
+
+ The function getBlockByrefType dives into the __Block_byref_x_VarName
+ struct to find the original type of the variable, which is then assigned to
+ the variable's Debug Information Entry as its real type. So far, so good.
+ However now the debugger will expect the variable VarName to have the type
+ SomeType. So we need the location attribute for the variable to be an
+ expression that explains to the debugger how to navigate through the
+ pointers and struct to find the actual variable of type SomeType.
+
+ The following function does just that. We start by getting
+ the "normal" location for the variable. This will be the location
+ of either the struct __Block_byref_x_VarName or the pointer to the
+ struct __Block_byref_x_VarName.
+
+ The struct will look something like:
+
+ struct __Block_byref_x_VarName {
+ ... <various fields>
+ struct __Block_byref_x_VarName *forwarding;
+ ... <various other fields>
+ SomeType VarName;
+ ... <maybe more fields>
+ };
+
+ If we are given the struct directly (as our starting point) we
+ need to tell the debugger to:
+
+ 1). Add the offset of the forwarding field.
+
+ 2). Follow that pointer to get the real __Block_byref_x_VarName
+ struct to use (the real one may have been copied onto the heap).
+
+ 3). Add the offset for the field VarName, to find the actual variable.
+
+ If we started with a pointer to the struct, then we need to
+ dereference that pointer first, before the other steps.
+ Translating this into DWARF ops, we will need to append the following
+ to the current location description for the variable:
+
+ DW_OP_deref -- optional, if we start with a pointer
+ DW_OP_plus_uconst <forward_fld_offset>
+ DW_OP_deref
+ DW_OP_plus_uconst <varName_fld_offset>
+
+ That is what this function does. */
+
+/// addBlockByrefAddress - Start with the address based on the location
+/// provided, and generate the DWARF information necessary to find the
+/// actual Block variable (navigating the Block struct) based on the
+/// starting location. Add the DWARF information to the die. For
+/// more information, read large comment just above here.
+///
+void CompileUnit::addBlockByrefAddress(const DbgVariable &DV, DIE *Die,
+ dwarf::Attribute Attribute,
+ const MachineLocation &Location) {
+ DIType Ty = DV.getType();
+ DIType TmpTy = Ty;
+ uint16_t Tag = Ty.getTag();
+ bool isPointer = false;
+
+ StringRef varName = DV.getName();
+
+ if (Tag == dwarf::DW_TAG_pointer_type) {
+ DIDerivedType DTy(Ty);
+ TmpTy = resolve(DTy.getTypeDerivedFrom());
+ isPointer = true;
+ }
+
+ DICompositeType blockStruct(TmpTy);
+
+ // Find the __forwarding field and the variable field in the __Block_byref
+ // struct.
+ DIArray Fields = blockStruct.getTypeArray();
+ DIDerivedType varField;
+ DIDerivedType forwardingField;
+
+ for (unsigned i = 0, N = Fields.getNumElements(); i < N; ++i) {
+ DIDerivedType DT(Fields.getElement(i));
+ StringRef fieldName = DT.getName();
+ if (fieldName == "__forwarding")
+ forwardingField = DT;
+ else if (fieldName == varName)
+ varField = DT;
+ }
+
+ // Get the offsets for the forwarding field and the variable field.
+ unsigned forwardingFieldOffset = forwardingField.getOffsetInBits() >> 3;
+ unsigned varFieldOffset = varField.getOffsetInBits() >> 2;
+
+ // Decode the original location, and use that as the start of the byref
+ // variable's location.
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+
+ if (Location.isReg())
+ addRegisterOp(Block, Location.getReg());
+ else
+ addRegisterOffset(Block, Location.getReg(), Location.getOffset());
+
+ // If we started with a pointer to the __Block_byref... struct, then
+ // the first thing we need to do is dereference the pointer (DW_OP_deref).
+ if (isPointer)
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+
+ // Next add the offset for the '__forwarding' field:
+ // DW_OP_plus_uconst ForwardingFieldOffset. Note there's no point in
+ // adding the offset if it's 0.
+ if (forwardingFieldOffset > 0) {
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, dwarf::DW_FORM_udata, forwardingFieldOffset);
+ }
+
+ // Now dereference the __forwarding field to get to the real __Block_byref
+ // struct: DW_OP_deref.
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+
+ // Now that we've got the real __Block_byref... struct, add the offset
+ // for the variable's field to get to the location of the actual variable:
+ // DW_OP_plus_uconst varFieldOffset. Again, don't add if it's 0.
+ if (varFieldOffset > 0) {
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
+ addUInt(Block, dwarf::DW_FORM_udata, varFieldOffset);
+ }
+
+ // Now attach the location information to the DIE.
+ addBlock(Die, Attribute, Block);
+}
+
+/// isTypeSigned - Return true if the type is signed.
+static bool isTypeSigned(DwarfDebug *DD, DIType Ty, int *SizeInBits) {
+ if (Ty.isDerivedType())
+ return isTypeSigned(DD, DD->resolve(DIDerivedType(Ty).getTypeDerivedFrom()),
+ SizeInBits);
+ if (Ty.isBasicType())
+ if (DIBasicType(Ty).getEncoding() == dwarf::DW_ATE_signed ||
+ DIBasicType(Ty).getEncoding() == dwarf::DW_ATE_signed_char) {
+ *SizeInBits = Ty.getSizeInBits();
+ return true;
+ }
+ return false;
+}
+
+/// Return true if type encoding is unsigned.
+static bool isUnsignedDIType(DwarfDebug *DD, DIType Ty) {
+ DIDerivedType DTy(Ty);
+ if (DTy.isDerivedType())
+ return isUnsignedDIType(DD, DD->resolve(DTy.getTypeDerivedFrom()));
+
+ DIBasicType BTy(Ty);
+ if (BTy.isBasicType()) {
+ unsigned Encoding = BTy.getEncoding();
+ if (Encoding == dwarf::DW_ATE_unsigned ||
+ Encoding == dwarf::DW_ATE_unsigned_char ||
+ Encoding == dwarf::DW_ATE_boolean)
+ return true;
+ }
+ return false;
+}
+
+/// If this type is derived from a base type then return base type size.
+static uint64_t getBaseTypeSize(DwarfDebug *DD, DIDerivedType Ty) {
+ unsigned Tag = Ty.getTag();
+
+ if (Tag != dwarf::DW_TAG_member && Tag != dwarf::DW_TAG_typedef &&
+ Tag != dwarf::DW_TAG_const_type && Tag != dwarf::DW_TAG_volatile_type &&
+ Tag != dwarf::DW_TAG_restrict_type)
+ return Ty.getSizeInBits();
+
+ DIType BaseType = DD->resolve(Ty.getTypeDerivedFrom());
+
+ // If this type is not derived from any type then take conservative approach.
+ if (!BaseType.isValid())
+ return Ty.getSizeInBits();
+
+ // If this is a derived type, go ahead and get the base type, unless it's a
+ // reference then it's just the size of the field. Pointer types have no need
+ // of this since they're a different type of qualification on the type.
+ if (BaseType.getTag() == dwarf::DW_TAG_reference_type ||
+ BaseType.getTag() == dwarf::DW_TAG_rvalue_reference_type)
+ return Ty.getSizeInBits();
+
+ if (BaseType.isDerivedType())
+ return getBaseTypeSize(DD, DIDerivedType(BaseType));
+
+ return BaseType.getSizeInBits();
+}
+
+/// addConstantValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantValue(DIE *Die, const MachineOperand &MO,
+ DIType Ty) {
+ // FIXME: This is a bit conservative/simple - it emits negative values at
+ // their maximum bit width which is a bit unfortunate (& doesn't prefer
+ // udata/sdata over dataN as suggested by the DWARF spec)
+ assert(MO.isImm() && "Invalid machine operand!");
+ int SizeInBits = -1;
+ bool SignedConstant = isTypeSigned(DD, Ty, &SizeInBits);
+ dwarf::Form Form;
+
+ // If we're a signed constant definitely use sdata.
+ if (SignedConstant) {
+ addSInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, MO.getImm());
+ return;
+ }
+
+ // Else use data for now unless it's larger than we can deal with.
+ switch (SizeInBits) {
+ case 8:
+ Form = dwarf::DW_FORM_data1;
+ break;
+ case 16:
+ Form = dwarf::DW_FORM_data2;
+ break;
+ case 32:
+ Form = dwarf::DW_FORM_data4;
+ break;
+ case 64:
+ Form = dwarf::DW_FORM_data8;
+ break;
+ default:
+ Form = dwarf::DW_FORM_udata;
+ addUInt(Die, dwarf::DW_AT_const_value, Form, MO.getImm());
+ return;
+ }
+ addUInt(Die, dwarf::DW_AT_const_value, Form, MO.getImm());
+}
+
+/// addConstantFPValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
+ assert(MO.isFPImm() && "Invalid machine operand!");
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ APFloat FPImm = MO.getFPImm()->getValueAPF();
+
+ // Get the raw data form of the floating point.
+ const APInt FltVal = FPImm.bitcastToAPInt();
+ const char *FltPtr = (const char *)FltVal.getRawData();
+
+ int NumBytes = FltVal.getBitWidth() / 8; // 8 bits per byte.
+ bool LittleEndian = Asm->getDataLayout().isLittleEndian();
+ int Incr = (LittleEndian ? 1 : -1);
+ int Start = (LittleEndian ? 0 : NumBytes - 1);
+ int Stop = (LittleEndian ? NumBytes : -1);
+
+ // Output the constant to DWARF one byte at a time.
+ for (; Start != Stop; Start += Incr)
+ addUInt(Block, dwarf::DW_FORM_data1, (unsigned char)0xFF & FltPtr[Start]);
+
+ addBlock(Die, dwarf::DW_AT_const_value, Block);
+}
+
+/// addConstantFPValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantFPValue(DIE *Die, const ConstantFP *CFP) {
+ // Pass this down to addConstantValue as an unsigned bag of bits.
+ addConstantValue(Die, CFP->getValueAPF().bitcastToAPInt(), true);
+}
+
+/// addConstantValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantValue(DIE *Die, const ConstantInt *CI,
+ bool Unsigned) {
+ addConstantValue(Die, CI->getValue(), Unsigned);
+}
+
+// addConstantValue - Add constant value entry in variable DIE.
+void CompileUnit::addConstantValue(DIE *Die, const APInt &Val, bool Unsigned) {
+ unsigned CIBitWidth = Val.getBitWidth();
+ if (CIBitWidth <= 64) {
+ // If we're a signed constant definitely use sdata.
+ if (!Unsigned) {
+ addSInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
+ Val.getSExtValue());
+ return;
+ }
+
+ // Else use data for now unless it's larger than we can deal with.
+ dwarf::Form Form;
+ switch (CIBitWidth) {
+ case 8:
+ Form = dwarf::DW_FORM_data1;
+ break;
+ case 16:
+ Form = dwarf::DW_FORM_data2;
+ break;
+ case 32:
+ Form = dwarf::DW_FORM_data4;
+ break;
+ case 64:
+ Form = dwarf::DW_FORM_data8;
+ break;
+ default:
+ addUInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
+ Val.getZExtValue());
+ return;
+ }
+ addUInt(Die, dwarf::DW_AT_const_value, Form, Val.getZExtValue());
+ return;
+ }
+
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+
+ // Get the raw data form of the large APInt.
+ const uint64_t *Ptr64 = Val.getRawData();
+
+ int NumBytes = Val.getBitWidth() / 8; // 8 bits per byte.
+ bool LittleEndian = Asm->getDataLayout().isLittleEndian();
+
+ // Output the constant to DWARF one byte at a time.
+ for (int i = 0; i < NumBytes; i++) {
+ uint8_t c;
+ if (LittleEndian)
+ c = Ptr64[i / 8] >> (8 * (i & 7));
+ else
+ c = Ptr64[(NumBytes - 1 - i) / 8] >> (8 * ((NumBytes - 1 - i) & 7));
+ addUInt(Block, dwarf::DW_FORM_data1, c);
+ }
+
+ addBlock(Die, dwarf::DW_AT_const_value, Block);
+}
+
+/// addTemplateParams - Add template parameters into buffer.
+void CompileUnit::addTemplateParams(DIE &Buffer, DIArray TParams) {
+ // Add template parameters.
+ for (unsigned i = 0, e = TParams.getNumElements(); i != e; ++i) {
+ DIDescriptor Element = TParams.getElement(i);
+ if (Element.isTemplateTypeParameter())
+ constructTemplateTypeParameterDIE(Buffer,
+ DITemplateTypeParameter(Element));
+ else if (Element.isTemplateValueParameter())
+ constructTemplateValueParameterDIE(Buffer,
+ DITemplateValueParameter(Element));
+ }
+}
+
+/// getOrCreateContextDIE - Get context owner's DIE.
+DIE *CompileUnit::getOrCreateContextDIE(DIScope Context) {
+ if (!Context || Context.isFile())
+ return getCUDie();
+ if (Context.isType())
+ return getOrCreateTypeDIE(DIType(Context));
+ if (Context.isNameSpace())
+ return getOrCreateNameSpace(DINameSpace(Context));
+ if (Context.isSubprogram())
+ return getOrCreateSubprogramDIE(DISubprogram(Context));
+ return getDIE(Context);
+}
+
+/// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
+/// given DIType.
+DIE *CompileUnit::getOrCreateTypeDIE(const MDNode *TyNode) {
+ if (!TyNode)
+ return NULL;
+
+ DIType Ty(TyNode);
+ assert(Ty.isType());
+
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(resolve(Ty.getContext()));
+ assert(ContextDIE);
+
+ DIE *TyDIE = getDIE(Ty);
+ if (TyDIE)
+ return TyDIE;
+
+ // Create new type.
+ TyDIE = createAndAddDIE(Ty.getTag(), *ContextDIE, Ty);
+
+ if (Ty.isBasicType())
+ constructTypeDIE(*TyDIE, DIBasicType(Ty));
+ else if (Ty.isCompositeType())
+ constructTypeDIE(*TyDIE, DICompositeType(Ty));
+ else {
+ assert(Ty.isDerivedType() && "Unknown kind of DIType");
+ constructTypeDIE(*TyDIE, DIDerivedType(Ty));
+ }
+ // If this is a named finished type then include it in the list of types
+ // for the accelerator tables.
+ if (!Ty.getName().empty() && !Ty.isForwardDecl()) {
+ bool IsImplementation = 0;
+ if (Ty.isCompositeType()) {
+ DICompositeType CT(Ty);
+ // A runtime language of 0 actually means C/C++ and that any
+ // non-negative value is some version of Objective-C/C++.
+ IsImplementation = (CT.getRunTimeLang() == 0) || CT.isObjcClassComplete();
+ }
+ unsigned Flags = IsImplementation ? dwarf::DW_FLAG_type_implementation : 0;
+ addAccelType(Ty.getName(), std::make_pair(TyDIE, Flags));
+ }
+
+ return TyDIE;
+}
+
+/// addType - Add a new type attribute to the specified entity.
+void CompileUnit::addType(DIE *Entity, DIType Ty, dwarf::Attribute Attribute) {
+ assert(Ty && "Trying to add a type that doesn't exist?");
+
+ // Check for pre-existence.
+ DIEEntry *Entry = getDIEEntry(Ty);
+ // If it exists then use the existing value.
+ if (Entry) {
+ addDIEEntry(Entity, Attribute, Entry);
+ return;
+ }
+
+ // Construct type.
+ DIE *Buffer = getOrCreateTypeDIE(Ty);
+
+ // Set up proxy.
+ Entry = createDIEEntry(Buffer);
+ insertDIEEntry(Ty, Entry);
+ addDIEEntry(Entity, Attribute, Entry);
+
+ // If this is a complete composite type then include it in the
+ // list of global types.
+ addGlobalType(Ty);
+}
+
+// Accelerator table mutators - add each name along with its companion
+// DIE to the proper table while ensuring that the name that we're going
+// to reference is in the string table. We do this since the names we
+// add may not only be identical to the names in the DIE.
+void CompileUnit::addAccelName(StringRef Name, DIE *Die) {
+ DU->getStringPoolEntry(Name);
+ std::vector<DIE *> &DIEs = AccelNames[Name];
+ DIEs.push_back(Die);
+}
+
+void CompileUnit::addAccelObjC(StringRef Name, DIE *Die) {
+ DU->getStringPoolEntry(Name);
+ std::vector<DIE *> &DIEs = AccelObjC[Name];
+ DIEs.push_back(Die);
+}
+
+void CompileUnit::addAccelNamespace(StringRef Name, DIE *Die) {
+ DU->getStringPoolEntry(Name);
+ std::vector<DIE *> &DIEs = AccelNamespace[Name];
+ DIEs.push_back(Die);
+}
+
+void CompileUnit::addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die) {
+ DU->getStringPoolEntry(Name);
+ std::vector<std::pair<DIE *, unsigned> > &DIEs = AccelTypes[Name];
+ DIEs.push_back(Die);
+}
+
+/// addGlobalName - Add a new global name to the compile unit.
+void CompileUnit::addGlobalName(StringRef Name, DIE *Die, DIScope Context) {
+ std::string FullName = getParentContextString(Context) + Name.str();
+ GlobalNames[FullName] = Die;
+}
+
+/// addGlobalType - Add a new global type to the compile unit.
+///
+void CompileUnit::addGlobalType(DIType Ty) {
+ DIScope Context = resolve(Ty.getContext());
+ if (!Ty.getName().empty() && !Ty.isForwardDecl() &&
+ (!Context || Context.isCompileUnit() || Context.isFile() ||
+ Context.isNameSpace()))
+ if (DIEEntry *Entry = getDIEEntry(Ty)) {
+ std::string FullName =
+ getParentContextString(Context) + Ty.getName().str();
+ GlobalTypes[FullName] = Entry->getEntry();
+ }
+}
+
+/// getParentContextString - Walks the metadata parent chain in a language
+/// specific manner (using the compile unit language) and returns
+/// it as a string. This is done at the metadata level because DIEs may
+/// not currently have been added to the parent context and walking the
+/// DIEs looking for names is more expensive than walking the metadata.
+std::string CompileUnit::getParentContextString(DIScope Context) const {
+ if (!Context)
+ return "";
+
+ // FIXME: Decide whether to implement this for non-C++ languages.
+ if (getLanguage() != dwarf::DW_LANG_C_plus_plus)
+ return "";
+
+ std::string CS;
+ SmallVector<DIScope, 1> Parents;
+ while (!Context.isCompileUnit()) {
+ Parents.push_back(Context);
+ if (Context.getContext())
+ Context = resolve(Context.getContext());
+ else
+ // Structure, etc types will have a NULL context if they're at the top
+ // level.
+ break;
+ }
+
+ // Reverse iterate over our list to go from the outermost construct to the
+ // innermost.
+ for (SmallVectorImpl<DIScope>::reverse_iterator I = Parents.rbegin(),
+ E = Parents.rend();
+ I != E; ++I) {
+ DIScope Ctx = *I;
+ StringRef Name = Ctx.getName();
+ if (!Name.empty()) {
+ CS += Name;
+ CS += "::";
+ }
+ }
+ return CS;
+}
+
+/// addPubTypes - Add subprogram argument types for pubtypes section.
+void CompileUnit::addPubTypes(DISubprogram SP) {
+ DICompositeType SPTy = SP.getType();
+ uint16_t SPTag = SPTy.getTag();
+ if (SPTag != dwarf::DW_TAG_subroutine_type)
+ return;
+
+ DIArray Args = SPTy.getTypeArray();
+ for (unsigned i = 0, e = Args.getNumElements(); i != e; ++i) {
+ DIType ATy(Args.getElement(i));
+ if (!ATy.isType())
+ continue;
+ addGlobalType(ATy);
+ }
}
-unsigned DwarfCompileUnit::getOrCreateSourceID(StringRef FileName,
- StringRef DirName) {
- // If we print assembly, we can't separate .file entries according to
- // compile units. Thus all files will belong to the default compile unit.
-
- // FIXME: add a better feature test than hasRawTextSupport. Even better,
- // extend .file to support this.
- return Asm->OutStreamer.EmitDwarfFileDirective(
- 0, DirName, FileName,
- Asm->OutStreamer.hasRawTextSupport() ? 0 : getUniqueID());
+/// constructTypeDIE - Construct basic type die from DIBasicType.
+void CompileUnit::constructTypeDIE(DIE &Buffer, DIBasicType BTy) {
+ // Get core information.
+ StringRef Name = BTy.getName();
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty())
+ addString(&Buffer, dwarf::DW_AT_name, Name);
+
+ // An unspecified type only has a name attribute.
+ if (BTy.getTag() == dwarf::DW_TAG_unspecified_type)
+ return;
+
+ addUInt(&Buffer, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
+ BTy.getEncoding());
+
+ uint64_t Size = BTy.getSizeInBits() >> 3;
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
+}
+
+/// constructTypeDIE - Construct derived type die from DIDerivedType.
+void CompileUnit::constructTypeDIE(DIE &Buffer, DIDerivedType DTy) {
+ // Get core information.
+ StringRef Name = DTy.getName();
+ uint64_t Size = DTy.getSizeInBits() >> 3;
+ uint16_t Tag = Buffer.getTag();
+
+ // Map to main type, void will not have a type.
+ DIType FromTy = resolve(DTy.getTypeDerivedFrom());
+ if (FromTy)
+ addType(&Buffer, FromTy);
+
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty())
+ addString(&Buffer, dwarf::DW_AT_name, Name);
+
+ // Add size if non-zero (derived types might be zero-sized.)
+ if (Size && Tag != dwarf::DW_TAG_pointer_type)
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
+
+ if (Tag == dwarf::DW_TAG_ptr_to_member_type)
+ addDIEEntry(&Buffer, dwarf::DW_AT_containing_type,
+ getOrCreateTypeDIE(resolve(DTy.getClassType())));
+ // Add source line info if available and TyDesc is not a forward declaration.
+ if (!DTy.isForwardDecl())
+ addSourceLine(&Buffer, DTy);
+}
+
+/// Return true if the type is appropriately scoped to be contained inside
+/// its own type unit.
+static bool isTypeUnitScoped(DIType Ty, const DwarfDebug *DD) {
+ DIScope Parent = DD->resolve(Ty.getContext());
+ while (Parent) {
+ // Don't generate a hash for anything scoped inside a function.
+ if (Parent.isSubprogram())
+ return false;
+ Parent = DD->resolve(Parent.getContext());
+ }
+ return true;
+}
+
+/// Return true if the type should be split out into a type unit.
+static bool shouldCreateTypeUnit(DICompositeType CTy, const DwarfDebug *DD) {
+ uint16_t Tag = CTy.getTag();
+
+ switch (Tag) {
+ case dwarf::DW_TAG_structure_type:
+ case dwarf::DW_TAG_union_type:
+ case dwarf::DW_TAG_enumeration_type:
+ case dwarf::DW_TAG_class_type:
+ // If this is a class, structure, union, or enumeration type
+ // that is a definition (not a declaration), and not scoped
+ // inside a function then separate this out as a type unit.
+ return !CTy.isForwardDecl() && isTypeUnitScoped(CTy, DD);
+ default:
+ return false;
+ }
+}
+
+/// constructTypeDIE - Construct type DIE from DICompositeType.
+void CompileUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
+ // Get core information.
+ StringRef Name = CTy.getName();
+
+ uint64_t Size = CTy.getSizeInBits() >> 3;
+ uint16_t Tag = Buffer.getTag();
+
+ switch (Tag) {
+ case dwarf::DW_TAG_array_type:
+ constructArrayTypeDIE(Buffer, CTy);
+ break;
+ case dwarf::DW_TAG_enumeration_type:
+ constructEnumTypeDIE(Buffer, CTy);
+ break;
+ case dwarf::DW_TAG_subroutine_type: {
+ // Add return type. A void return won't have a type.
+ DIArray Elements = CTy.getTypeArray();
+ DIType RTy(Elements.getElement(0));
+ if (RTy)
+ addType(&Buffer, RTy);
+
+ bool isPrototyped = true;
+ // Add arguments.
+ for (unsigned i = 1, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Ty = Elements.getElement(i);
+ if (Ty.isUnspecifiedParameter()) {
+ createAndAddDIE(dwarf::DW_TAG_unspecified_parameters, Buffer);
+ isPrototyped = false;
+ } else {
+ DIE *Arg = createAndAddDIE(dwarf::DW_TAG_formal_parameter, Buffer);
+ addType(Arg, DIType(Ty));
+ if (DIType(Ty).isArtificial())
+ addFlag(Arg, dwarf::DW_AT_artificial);
+ }
+ }
+ // Add prototype flag if we're dealing with a C language and the
+ // function has been prototyped.
+ uint16_t Language = getLanguage();
+ if (isPrototyped &&
+ (Language == dwarf::DW_LANG_C89 || Language == dwarf::DW_LANG_C99 ||
+ Language == dwarf::DW_LANG_ObjC))
+ addFlag(&Buffer, dwarf::DW_AT_prototyped);
+ } break;
+ case dwarf::DW_TAG_structure_type:
+ case dwarf::DW_TAG_union_type:
+ case dwarf::DW_TAG_class_type: {
+ // Add elements to structure type.
+ DIArray Elements = CTy.getTypeArray();
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ DIE *ElemDie = NULL;
+ if (Element.isSubprogram()) {
+ DISubprogram SP(Element);
+ ElemDie = getOrCreateSubprogramDIE(SP);
+ if (SP.isProtected())
+ addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_protected);
+ else if (SP.isPrivate())
+ addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_private);
+ else
+ addUInt(ElemDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_public);
+ if (SP.isExplicit())
+ addFlag(ElemDie, dwarf::DW_AT_explicit);
+ } else if (Element.isDerivedType()) {
+ DIDerivedType DDTy(Element);
+ if (DDTy.getTag() == dwarf::DW_TAG_friend) {
+ ElemDie = createAndAddDIE(dwarf::DW_TAG_friend, Buffer);
+ addType(ElemDie, resolve(DDTy.getTypeDerivedFrom()),
+ dwarf::DW_AT_friend);
+ } else if (DDTy.isStaticMember()) {
+ getOrCreateStaticMemberDIE(DDTy);
+ } else {
+ constructMemberDIE(Buffer, DDTy);
+ }
+ } else if (Element.isObjCProperty()) {
+ DIObjCProperty Property(Element);
+ ElemDie = createAndAddDIE(Property.getTag(), Buffer);
+ StringRef PropertyName = Property.getObjCPropertyName();
+ addString(ElemDie, dwarf::DW_AT_APPLE_property_name, PropertyName);
+ addType(ElemDie, Property.getType());
+ addSourceLine(ElemDie, Property);
+ StringRef GetterName = Property.getObjCPropertyGetterName();
+ if (!GetterName.empty())
+ addString(ElemDie, dwarf::DW_AT_APPLE_property_getter, GetterName);
+ StringRef SetterName = Property.getObjCPropertySetterName();
+ if (!SetterName.empty())
+ addString(ElemDie, dwarf::DW_AT_APPLE_property_setter, SetterName);
+ unsigned PropertyAttributes = 0;
+ if (Property.isReadOnlyObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readonly;
+ if (Property.isReadWriteObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_readwrite;
+ if (Property.isAssignObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_assign;
+ if (Property.isRetainObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_retain;
+ if (Property.isCopyObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_copy;
+ if (Property.isNonAtomicObjCProperty())
+ PropertyAttributes |= dwarf::DW_APPLE_PROPERTY_nonatomic;
+ if (PropertyAttributes)
+ addUInt(ElemDie, dwarf::DW_AT_APPLE_property_attribute, None,
+ PropertyAttributes);
+
+ DIEEntry *Entry = getDIEEntry(Element);
+ if (!Entry) {
+ Entry = createDIEEntry(ElemDie);
+ insertDIEEntry(Element, Entry);
+ }
+ } else
+ continue;
+ }
+
+ if (CTy.isAppleBlockExtension())
+ addFlag(&Buffer, dwarf::DW_AT_APPLE_block);
+
+ DICompositeType ContainingType(resolve(CTy.getContainingType()));
+ if (ContainingType)
+ addDIEEntry(&Buffer, dwarf::DW_AT_containing_type,
+ getOrCreateTypeDIE(ContainingType));
+
+ if (CTy.isObjcClassComplete())
+ addFlag(&Buffer, dwarf::DW_AT_APPLE_objc_complete_type);
+
+ // Add template parameters to a class, structure or union types.
+ // FIXME: The support isn't in the metadata for this yet.
+ if (Tag == dwarf::DW_TAG_class_type ||
+ Tag == dwarf::DW_TAG_structure_type || Tag == dwarf::DW_TAG_union_type)
+ addTemplateParams(Buffer, CTy.getTemplateParams());
+
+ break;
+ }
+ default:
+ break;
+ }
+
+ // Add name if not anonymous or intermediate type.
+ if (!Name.empty())
+ addString(&Buffer, dwarf::DW_AT_name, Name);
+
+ if (Tag == dwarf::DW_TAG_enumeration_type ||
+ Tag == dwarf::DW_TAG_class_type || Tag == dwarf::DW_TAG_structure_type ||
+ Tag == dwarf::DW_TAG_union_type) {
+ // Add size if non-zero (derived types might be zero-sized.)
+ // TODO: Do we care about size for enum forward declarations?
+ if (Size)
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, Size);
+ else if (!CTy.isForwardDecl())
+ // Add zero size if it is not a forward declaration.
+ addUInt(&Buffer, dwarf::DW_AT_byte_size, None, 0);
+
+ // If we're a forward decl, say so.
+ if (CTy.isForwardDecl())
+ addFlag(&Buffer, dwarf::DW_AT_declaration);
+
+ // Add source line info if available.
+ if (!CTy.isForwardDecl())
+ addSourceLine(&Buffer, CTy);
+
+ // No harm in adding the runtime language to the declaration.
+ unsigned RLang = CTy.getRunTimeLang();
+ if (RLang)
+ addUInt(&Buffer, dwarf::DW_AT_APPLE_runtime_class, dwarf::DW_FORM_data1,
+ RLang);
+ }
+ // If this is a type applicable to a type unit it then add it to the
+ // list of types we'll compute a hash for later.
+ if (shouldCreateTypeUnit(CTy, DD))
+ DD->addTypeUnitType(&Buffer);
+}
+
+/// constructTemplateTypeParameterDIE - Construct new DIE for the given
+/// DITemplateTypeParameter.
+void
+CompileUnit::constructTemplateTypeParameterDIE(DIE &Buffer,
+ DITemplateTypeParameter TP) {
+ DIE *ParamDIE =
+ createAndAddDIE(dwarf::DW_TAG_template_type_parameter, Buffer);
+ // Add the type if it exists, it could be void and therefore no type.
+ if (TP.getType())
+ addType(ParamDIE, resolve(TP.getType()));
+ if (!TP.getName().empty())
+ addString(ParamDIE, dwarf::DW_AT_name, TP.getName());
+}
+
+/// constructTemplateValueParameterDIE - Construct new DIE for the given
+/// DITemplateValueParameter.
+void
+CompileUnit::constructTemplateValueParameterDIE(DIE &Buffer,
+ DITemplateValueParameter VP) {
+ DIE *ParamDIE = createAndAddDIE(VP.getTag(), Buffer);
+
+ // Add the type if there is one, template template and template parameter
+ // packs will not have a type.
+ if (VP.getTag() == dwarf::DW_TAG_template_value_parameter)
+ addType(ParamDIE, resolve(VP.getType()));
+ if (!VP.getName().empty())
+ addString(ParamDIE, dwarf::DW_AT_name, VP.getName());
+ if (Value *Val = VP.getValue()) {
+ if (ConstantInt *CI = dyn_cast<ConstantInt>(Val))
+ addConstantValue(ParamDIE, CI,
+ isUnsignedDIType(DD, resolve(VP.getType())));
+ else if (GlobalValue *GV = dyn_cast<GlobalValue>(Val)) {
+ // For declaration non-type template parameters (such as global values and
+ // functions)
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+ addOpAddress(Block, Asm->getSymbol(GV));
+ // Emit DW_OP_stack_value to use the address as the immediate value of the
+ // parameter, rather than a pointer to it.
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_stack_value);
+ addBlock(ParamDIE, dwarf::DW_AT_location, Block);
+ } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_template_param) {
+ assert(isa<MDString>(Val));
+ addString(ParamDIE, dwarf::DW_AT_GNU_template_name,
+ cast<MDString>(Val)->getString());
+ } else if (VP.getTag() == dwarf::DW_TAG_GNU_template_parameter_pack) {
+ assert(isa<MDNode>(Val));
+ DIArray A(cast<MDNode>(Val));
+ addTemplateParams(*ParamDIE, A);
+ }
+ }
+}
+
+/// getOrCreateNameSpace - Create a DIE for DINameSpace.
+DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(NS.getContext());
+
+ DIE *NDie = getDIE(NS);
+ if (NDie)
+ return NDie;
+ NDie = createAndAddDIE(dwarf::DW_TAG_namespace, *ContextDIE, NS);
+
+ if (!NS.getName().empty()) {
+ addString(NDie, dwarf::DW_AT_name, NS.getName());
+ addAccelNamespace(NS.getName(), NDie);
+ addGlobalName(NS.getName(), NDie, NS.getContext());
+ } else
+ addAccelNamespace("(anonymous namespace)", NDie);
+ addSourceLine(NDie, NS);
+ return NDie;
+}
+
+/// getOrCreateSubprogramDIE - Create new DIE using SP.
+DIE *CompileUnit::getOrCreateSubprogramDIE(DISubprogram SP) {
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE (as is the case for member function
+ // declarations).
+ DIE *ContextDIE = getOrCreateContextDIE(resolve(SP.getContext()));
+
+ DIE *SPDie = getDIE(SP);
+ if (SPDie)
+ return SPDie;
+
+ DISubprogram SPDecl = SP.getFunctionDeclaration();
+ if (SPDecl.isSubprogram())
+ // Add subprogram definitions to the CU die directly.
+ ContextDIE = CUDie.get();
+
+ // DW_TAG_inlined_subroutine may refer to this DIE.
+ SPDie = createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, SP);
+
+ DIE *DeclDie = NULL;
+ if (SPDecl.isSubprogram())
+ DeclDie = getOrCreateSubprogramDIE(SPDecl);
+
+ // Add function template parameters.
+ addTemplateParams(*SPDie, SP.getTemplateParams());
+
+ // If this DIE is going to refer declaration info using AT_specification
+ // then there is no need to add other attributes.
+ if (DeclDie) {
+ // Refer function declaration directly.
+ addDIEEntry(SPDie, dwarf::DW_AT_specification, DeclDie);
+
+ return SPDie;
+ }
+
+ // Add the linkage name if we have one.
+ StringRef LinkageName = SP.getLinkageName();
+ if (!LinkageName.empty())
+ addString(SPDie, dwarf::DW_AT_MIPS_linkage_name,
+ GlobalValue::getRealLinkageName(LinkageName));
+
+ // Constructors and operators for anonymous aggregates do not have names.
+ if (!SP.getName().empty())
+ addString(SPDie, dwarf::DW_AT_name, SP.getName());
+
+ addSourceLine(SPDie, SP);
+
+ // Add the prototype if we have a prototype and we have a C like
+ // language.
+ uint16_t Language = getLanguage();
+ if (SP.isPrototyped() &&
+ (Language == dwarf::DW_LANG_C89 || Language == dwarf::DW_LANG_C99 ||
+ Language == dwarf::DW_LANG_ObjC))
+ addFlag(SPDie, dwarf::DW_AT_prototyped);
+
+ DICompositeType SPTy = SP.getType();
+ assert(SPTy.getTag() == dwarf::DW_TAG_subroutine_type &&
+ "the type of a subprogram should be a subroutine");
+
+ DIArray Args = SPTy.getTypeArray();
+ // Add a return type. If this is a type like a C/C++ void type we don't add a
+ // return type.
+ if (Args.getElement(0))
+ addType(SPDie, DIType(Args.getElement(0)));
+
+ unsigned VK = SP.getVirtuality();
+ if (VK) {
+ addUInt(SPDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_data1, VK);
+ DIEBlock *Block = getDIEBlock();
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
+ addUInt(Block, dwarf::DW_FORM_udata, SP.getVirtualIndex());
+ addBlock(SPDie, dwarf::DW_AT_vtable_elem_location, Block);
+ ContainingTypeMap.insert(
+ std::make_pair(SPDie, resolve(SP.getContainingType())));
+ }
+
+ if (!SP.isDefinition()) {
+ addFlag(SPDie, dwarf::DW_AT_declaration);
+
+ // Add arguments. Do not add arguments for subprogram definition. They will
+ // be handled while processing variables.
+ for (unsigned i = 1, N = Args.getNumElements(); i < N; ++i) {
+ DIE *Arg = createAndAddDIE(dwarf::DW_TAG_formal_parameter, *SPDie);
+ DIType ATy(Args.getElement(i));
+ addType(Arg, ATy);
+ if (ATy.isArtificial())
+ addFlag(Arg, dwarf::DW_AT_artificial);
+ }
+ }
+
+ if (SP.isArtificial())
+ addFlag(SPDie, dwarf::DW_AT_artificial);
+
+ if (!SP.isLocalToUnit())
+ addFlag(SPDie, dwarf::DW_AT_external);
+
+ if (SP.isOptimized())
+ addFlag(SPDie, dwarf::DW_AT_APPLE_optimized);
+
+ if (unsigned isa = Asm->getISAEncoding()) {
+ addUInt(SPDie, dwarf::DW_AT_APPLE_isa, dwarf::DW_FORM_flag, isa);
+ }
+
+ return SPDie;
}
// Return const expression if value is a GEP to access merged global
@@ -75,412 +1485,282 @@ static const ConstantExpr *getMergedGlob
const ConstantExpr *CE = dyn_cast_or_null<ConstantExpr>(V);
if (!CE || CE->getNumOperands() != 3 ||
CE->getOpcode() != Instruction::GetElementPtr)
- return nullptr;
+ 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 nullptr;
+ return NULL;
// Second operand is zero.
const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(CE->getOperand(1));
if (!CI || !CI->isZero())
- return nullptr;
+ return NULL;
// Third operand is offset.
if (!isa<ConstantInt>(CE->getOperand(2)))
- return nullptr;
+ return NULL;
return CE;
}
-/// getOrCreateGlobalVariableDIE - get or create global variable DIE.
-DIE *DwarfCompileUnit::getOrCreateGlobalVariableDIE(DIGlobalVariable GV) {
+/// createGlobalVariableDIE - create global variable DIE.
+void CompileUnit::createGlobalVariableDIE(DIGlobalVariable GV) {
+
// Check for pre-existence.
- if (DIE *Die = getDIE(GV))
- return Die;
+ if (getDIE(GV))
+ return;
- assert(GV.isGlobalVariable());
+ if (!GV.isGlobalVariable())
+ return;
DIScope GVContext = GV.getContext();
- DIType 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;
+ DIType GTy = GV.getType();
- if (DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration()) {
- DeclContext = resolve(SDMDecl.getContext());
+ // If this is a static data member definition, some attributes belong
+ // to the declaration DIE.
+ DIE *VariableDIE = NULL;
+ bool IsStaticMember = false;
+ DIDerivedType SDMDecl = GV.getStaticDataMemberDeclaration();
+ if (SDMDecl.Verify()) {
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();
+ VariableDIE = getOrCreateStaticMemberDIE(SDMDecl);
+ IsStaticMember = true;
+ }
+
+ // If this is not a static data member definition, create the variable
+ // DIE and add the initial set of attributes to it.
+ if (!VariableDIE) {
+ // 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.
+ VariableDIE = createAndAddDIE(GV.getTag(), *ContextDIE, GV);
+
// Add name and type.
- addString(*VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
- addType(*VariableDIE, GTy);
+ addString(VariableDIE, dwarf::DW_AT_name, GV.getDisplayName());
+ addType(VariableDIE, GTy);
// Add scoping info.
if (!GV.isLocalToUnit())
- addFlag(*VariableDIE, dwarf::DW_AT_external);
+ addFlag(VariableDIE, dwarf::DW_AT_external);
// Add line number info.
- addSourceLine(*VariableDIE, GV);
+ addSourceLine(VariableDIE, GV);
}
- if (!GV.isDefinition())
- addFlag(*VariableDIE, dwarf::DW_AT_declaration);
-
// Add location.
bool addToAccelTable = false;
- bool isGlobalVariable = GV.getGlobal() != nullptr;
+ DIE *VariableSpecDIE = NULL;
+ bool isGlobalVariable = GV.getGlobal() != NULL;
if (isGlobalVariable) {
addToAccelTable = true;
- DIELoc *Loc = new (DIEValueAllocator) DIELoc();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
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");
+ const MCExpr *Expr =
+ Asm->getObjFileLowering().getDebugThreadLocalSymbol(Sym);
// 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,
+ addUInt(Block, 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));
+ addExpr(Block, dwarf::DW_FORM_udata, Expr);
} 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));
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_const_index);
+ addUInt(Block, dwarf::DW_FORM_udata, DU->getAddrPoolIndex(Expr));
}
// 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);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_GNU_push_tls_address);
+ } else
+ addOpAddress(Block, Sym);
+ // Do not create specification DIE if context is either compile unit
+ // or a subprogram.
+ if (GVContext && GV.isDefinition() && !GVContext.isCompileUnit() &&
+ !GVContext.isFile() && !DD->isSubprogramContext(GVContext)) {
+ // Create specification DIE.
+ VariableSpecDIE = createAndAddDIE(dwarf::DW_TAG_variable, *CUDie);
+ addDIEEntry(VariableSpecDIE, dwarf::DW_AT_specification, VariableDIE);
+ addBlock(VariableSpecDIE, dwarf::DW_AT_location, Block);
+ // A static member's declaration is already flagged as such.
+ if (!SDMDecl.Verify())
+ addFlag(VariableDIE, dwarf::DW_AT_declaration);
} else {
- DD->addArangeLabel(SymbolCU(this, Sym));
- addOpAddress(*Loc, Sym);
+ addBlock(VariableDIE, dwarf::DW_AT_location, Block);
}
-
- 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,
+ addString(IsStaticMember && VariableSpecDIE ? VariableSpecDIE
+ : VariableDIE,
+ dwarf::DW_AT_MIPS_linkage_name,
GlobalValue::getRealLinkageName(LinkageName));
} else if (const ConstantInt *CI =
dyn_cast_or_null<ConstantInt>(GV.getConstant())) {
- addConstantValue(*VariableDIE, CI, GTy);
- } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV.getConstant())) {
+ // AT_const_value was added when the static member was created. To avoid
+ // emitting AT_const_value multiple times, we only add AT_const_value when
+ // it is not a static member.
+ if (!IsStaticMember)
+ addConstantValue(VariableDIE, CI, isUnsignedDIType(DD, GTy));
+ } else if (const ConstantExpr *CE = getMergedGlobalExpr(GV->getOperand(11))) {
addToAccelTable = true;
// GV is a merged global.
- DIELoc *Loc = new (DIEValueAllocator) DIELoc();
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
- MCSymbol *Sym = Asm->getSymbol(cast<GlobalValue>(Ptr));
- DD->addArangeLabel(SymbolCU(this, Sym));
- addOpAddress(*Loc, Sym);
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
+ addOpAddress(Block, Asm->getSymbol(cast<GlobalValue>(Ptr)));
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
SmallVector<Value *, 3> Idx(CE->op_begin() + 1, CE->op_end());
- addUInt(*Loc, dwarf::DW_FORM_udata,
+ addUInt(Block, dwarf::DW_FORM_udata,
Asm->getDataLayout().getIndexedOffset(Ptr->getType(), Idx));
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
- addBlock(*VariableDIE, dwarf::DW_AT_location, Loc);
+ addUInt(Block, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
+ addBlock(VariableDIE, dwarf::DW_AT_location, Block);
}
if (addToAccelTable) {
- DD->addAccelName(GV.getName(), *VariableDIE);
+ DIE *AddrDIE = VariableSpecDIE ? VariableSpecDIE : VariableDIE;
+ addAccelName(GV.getName(), AddrDIE);
// 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);
+ addAccelName(GV.getLinkageName(), AddrDIE);
}
- addGlobalName(GV.getName(), *VariableDIE, DeclContext);
- return VariableDIE;
-}
-
-void DwarfCompileUnit::addRange(RangeSpan Range) {
- bool SameAsPrevCU = this == DD->getPrevCU();
- DD->setPrevCU(this);
- // If we have no current ranges just add the range and return, otherwise,
- // check the current section and CU against the previous section and CU we
- // emitted into and the subprogram was contained within. If these are the
- // same then extend our current range, otherwise add this as a new range.
- if (CURanges.empty() || !SameAsPrevCU ||
- (&CURanges.back().getEnd()->getSection() !=
- &Range.getEnd()->getSection())) {
- CURanges.push_back(Range);
- return;
+ if (!GV.isLocalToUnit())
+ addGlobalName(GV.getName(), VariableSpecDIE ? VariableSpecDIE : VariableDIE,
+ GV.getContext());
+}
+
+/// constructSubrangeDIE - Construct subrange DIE from DISubrange.
+void CompileUnit::constructSubrangeDIE(DIE &Buffer, DISubrange SR,
+ DIE *IndexTy) {
+ DIE *DW_Subrange = createAndAddDIE(dwarf::DW_TAG_subrange_type, Buffer);
+ addDIEEntry(DW_Subrange, dwarf::DW_AT_type, IndexTy);
+
+ // The LowerBound value defines the lower bounds which is typically zero for
+ // C/C++. The Count value is the number of elements. Values are 64 bit. If
+ // Count == -1 then the array is unbounded and we do not emit
+ // DW_AT_lower_bound and DW_AT_upper_bound attributes. If LowerBound == 0 and
+ // Count == 0, then the array has zero elements in which case we do not emit
+ // an upper bound.
+ int64_t LowerBound = SR.getLo();
+ int64_t DefaultLowerBound = getDefaultLowerBound();
+ int64_t Count = SR.getCount();
+
+ if (DefaultLowerBound == -1 || LowerBound != DefaultLowerBound)
+ addUInt(DW_Subrange, dwarf::DW_AT_lower_bound, None, LowerBound);
+
+ if (Count != -1 && Count != 0)
+ // FIXME: An unbounded array should reference the expression that defines
+ // the array.
+ addUInt(DW_Subrange, dwarf::DW_AT_upper_bound, None,
+ LowerBound + Count - 1);
+}
+
+/// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
+void CompileUnit::constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy) {
+ if (CTy.isVector())
+ addFlag(&Buffer, dwarf::DW_AT_GNU_vector);
+
+ // Emit the element type.
+ addType(&Buffer, resolve(CTy.getTypeDerivedFrom()));
+
+ // Get an anonymous type for index type.
+ // FIXME: This type should be passed down from the front end
+ // as different languages may have different sizes for indexes.
+ DIE *IdxTy = getIndexTyDie();
+ if (!IdxTy) {
+ // Construct an anonymous type for index type.
+ IdxTy = createAndAddDIE(dwarf::DW_TAG_base_type, *CUDie.get());
+ addString(IdxTy, dwarf::DW_AT_name, "int");
+ addUInt(IdxTy, dwarf::DW_AT_byte_size, None, sizeof(int32_t));
+ addUInt(IdxTy, dwarf::DW_AT_encoding, dwarf::DW_FORM_data1,
+ dwarf::DW_ATE_signed);
+ setIndexTyDie(IdxTy);
}
- CURanges.back().setEnd(Range.getEnd());
-}
-
-void 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);
-}
-
-void DwarfCompileUnit::initStmtList(MCSymbol *DwarfLineSectionSym) {
- // Define start line table label for each Compile Unit.
- MCSymbol *LineTableStartSym =
- Asm->OutStreamer.getDwarfLineTableSymbol(getUniqueID());
-
- stmtListIndex = UnitDie.getValues().size();
-
- // 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);
-}
-
-void DwarfCompileUnit::applyStmtList(DIE &D) {
- D.addValue(dwarf::DW_AT_stmt_list,
- UnitDie.getAbbrev().getData()[stmtListIndex].getForm(),
- UnitDie.getValues()[stmtListIndex]);
-}
-
-void DwarfCompileUnit::attachLowHighPC(DIE &D, const MCSymbol *Begin,
- const MCSymbol *End) {
- assert(Begin && "Begin label should not be null!");
- assert(End && "End label should not be null!");
- assert(Begin->isDefined() && "Invalid starting label");
- assert(End->isDefined() && "Invalid end label");
-
- addLabelAddress(D, dwarf::DW_AT_low_pc, Begin);
- if (DD->getDwarfVersion() < 4)
- addLabelAddress(D, dwarf::DW_AT_high_pc, End);
- else
- addLabelDelta(D, dwarf::DW_AT_high_pc, End, 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, includeMinimalInlineScopes());
-
- attachLowHighPC(*SPDie, DD->getFunctionBeginSym(), DD->getFunctionEndSym());
- 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 (!includeMinimalInlineScopes()) {
- const TargetRegisterInfo *RI =
- Asm->TM.getSubtargetImpl()->getRegisterInfo();
- MachineLocation Location(RI->getFrameRegister(*Asm->MF));
- if (RI->isPhysicalRegister(Location.getReg()))
- addAddress(*SPDie, dwarf::DW_AT_frame_base, Location);
+ // Add subranges to array type.
+ DIArray Elements = CTy.getTypeArray();
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ if (Element.getTag() == dwarf::DW_TAG_subrange_type)
+ constructSubrangeDIE(Buffer, DISubrange(Element), IdxTy);
}
-
- // Add name to the name table, we do this here because we're guaranteed
- // to have concrete versions of our DW_TAG_subprogram nodes.
- DD->addSubprogramNames(SP, *SPDie);
-
- return *SPDie;
}
-// Construct a DIE for this scope.
-void DwarfCompileUnit::constructScopeDIE(
- LexicalScope *Scope, SmallVectorImpl<std::unique_ptr<DIE>> &FinalChildren) {
- if (!Scope || !Scope->getScopeNode())
- return;
-
- DIScope DS(Scope->getScopeNode());
-
- assert((Scope->getInlinedAt() || !DS.isSubprogram()) &&
- "Only handle inlined subprograms here, use "
- "constructSubprogramScopeDIE for non-inlined "
- "subprograms");
-
- SmallVector<std::unique_ptr<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()) {
- ScopeDIE = constructInlinedScopeDIE(Scope);
- if (!ScopeDIE)
- return;
- // We create children when the scope DIE is not null.
- createScopeChildrenDIE(Scope, Children);
- } else {
- // Early exit when we know the scope DIE is going to be null.
- if (DD->isLexicalScopeDIENull(Scope))
- return;
-
- unsigned ChildScopeCount;
-
- // We create children here when we know the scope DIE is not going to be
- // null and the children will be added to the scope DIE.
- createScopeChildrenDIE(Scope, Children, &ChildScopeCount);
-
- // 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(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.insert(FinalChildren.end(),
- std::make_move_iterator(Children.begin()),
- std::make_move_iterator(Children.end()));
- return;
+/// constructEnumTypeDIE - Construct an enum type DIE from DICompositeType.
+void CompileUnit::constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy) {
+ DIArray Elements = CTy.getTypeArray();
+
+ // Add enumerators to enumeration type.
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIEnumerator Enum(Elements.getElement(i));
+ if (Enum.isEnumerator()) {
+ DIE *Enumerator = createAndAddDIE(dwarf::DW_TAG_enumerator, Buffer);
+ StringRef Name = Enum.getName();
+ addString(Enumerator, dwarf::DW_AT_name, Name);
+ int64_t Value = Enum.getEnumValue();
+ addSInt(Enumerator, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata, Value);
}
- ScopeDIE = constructLexicalScopeDIE(Scope);
- assert(ScopeDIE && "Scope DIE should not be null.");
}
-
- // Add children
- for (auto &I : Children)
- ScopeDIE->addChild(std::move(I));
-
- 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);
-}
-
-void DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
- SmallVector<RangeSpan, 2> Range) {
- // Emit offset in .debug_range as a relocatable label. emitDIE will handle
- // emitting it appropriately.
- auto *RangeSectionSym = DD->getRangeSectionSym();
-
- RangeSpanList List(
- Asm->GetTempSymbol("debug_ranges", DD->getNextRangeNumber()),
- std::move(Range));
-
- // Under fission, ranges are specified by constant offsets relative to the
- // CU's DW_AT_GNU_ranges_base.
- if (isDwoUnit())
- addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
- RangeSectionSym);
- else
- addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
- RangeSectionSym);
-
- // Add the range list to the set of ranges to be emitted.
- (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));
+ DIType DTy = resolve(CTy.getTypeDerivedFrom());
+ if (DTy) {
+ addType(&Buffer, DTy);
+ addFlag(&Buffer, dwarf::DW_AT_enum_class);
+ }
}
-void DwarfCompileUnit::attachRangesOrLowHighPC(
- DIE &Die, const SmallVectorImpl<InsnRange> &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) {
- assert(Scope->getScopeNode());
- DIScope DS(Scope->getScopeNode());
- DISubprogram 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);
- addDIEEntry(*ScopeDIE, dwarf::DW_AT_abstract_origin, *OriginDIE);
-
- attachRangesOrLowHighPC(*ScopeDIE, Scope->getRanges());
-
- // Add the call site information to the DIE.
- DILocation DL(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());
-
- // 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.
- DD->addSubprogramNames(InlinedSP, *ScopeDIE);
-
- return ScopeDIE;
-}
-
-// 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) {
- if (DD->isLexicalScopeDIENull(Scope))
- return nullptr;
-
- auto ScopeDIE = make_unique<DIE>(dwarf::DW_TAG_lexical_block);
- if (Scope->isAbstractScope())
- return ScopeDIE;
-
- attachRangesOrLowHighPC(*ScopeDIE, Scope->getRanges());
-
- return ScopeDIE;
+/// constructContainingTypeDIEs - Construct DIEs for types that contain
+/// vtables.
+void CompileUnit::constructContainingTypeDIEs() {
+ for (DenseMap<DIE *, const MDNode *>::iterator CI = ContainingTypeMap.begin(),
+ CE = ContainingTypeMap.end();
+ CI != CE; ++CI) {
+ DIE *SPDie = CI->first;
+ DIDescriptor D(CI->second);
+ if (!D)
+ continue;
+ DIE *NDie = getDIE(D);
+ if (!NDie)
+ continue;
+ addDIEEntry(SPDie, dwarf::DW_AT_containing_type, NDie);
+ }
}
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-std::unique_ptr<DIE> DwarfCompileUnit::constructVariableDIE(DbgVariable &DV,
- bool Abstract) {
- auto D = constructVariableDIEImpl(DV, Abstract);
- DV.setDIE(*D);
- return D;
-}
+DIE *CompileUnit::constructVariableDIE(DbgVariable &DV, bool isScopeAbstract) {
+ StringRef Name = DV.getName();
-std::unique_ptr<DIE>
-DwarfCompileUnit::constructVariableDIEImpl(const DbgVariable &DV,
- bool Abstract) {
// Define variable debug information entry.
- auto VariableDie = make_unique<DIE>(DV.getTag());
+ DIE *VariableDie = new DIE(DV.getTag());
+ DbgVariable *AbsVar = DV.getAbstractVariable();
+ DIE *AbsDIE = AbsVar ? AbsVar->getDIE() : NULL;
+ if (AbsDIE)
+ addDIEEntry(VariableDie, dwarf::DW_AT_abstract_origin, AbsDIE);
+ else {
+ if (!Name.empty())
+ addString(VariableDie, dwarf::DW_AT_name, Name);
+ addSourceLine(VariableDie, DV.getVariable());
+ addType(VariableDie, DV.getType());
+ }
+
+ if (DV.isArtificial())
+ addFlag(VariableDie, dwarf::DW_AT_artificial);
- if (Abstract) {
- applyVariableAttributes(DV, *VariableDie);
+ if (isScopeAbstract) {
+ DV.setDIE(VariableDie);
return VariableDie;
}
@@ -488,349 +1768,189 @@ DwarfCompileUnit::constructVariableDIEIm
unsigned Offset = DV.getDotDebugLocOffset();
if (Offset != ~0U) {
- addLocationList(*VariableDie, dwarf::DW_AT_location, Offset);
+ addLabel(VariableDie, dwarf::DW_AT_location,
+ DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
+ : dwarf::DW_FORM_data4,
+ Asm->GetTempSymbol("debug_loc", Offset));
+ DV.setDIE(VariableDie);
return VariableDie;
}
// Check if variable is described by a DBG_VALUE instruction.
if (const MachineInstr *DVInsn = DV.getMInsn()) {
- assert(DVInsn->getNumOperands() == 4);
+ assert(DVInsn->getNumOperands() == 3);
if (DVInsn->getOperand(0).isReg()) {
const MachineOperand RegOp = DVInsn->getOperand(0);
// If the second operand is an immediate, this is an indirect value.
if (DVInsn->getOperand(1).isImm()) {
MachineLocation Location(RegOp.getReg(),
DVInsn->getOperand(1).getImm());
- addVariableAddress(DV, *VariableDie, Location);
+ addVariableAddress(DV, VariableDie, Location);
} else if (RegOp.getReg())
- addVariableAddress(DV, *VariableDie, MachineLocation(RegOp.getReg()));
+ addVariableAddress(DV, VariableDie, MachineLocation(RegOp.getReg()));
} else if (DVInsn->getOperand(0).isImm())
- addConstantValue(*VariableDie, DVInsn->getOperand(0), DV.getType());
+ addConstantValue(VariableDie, DVInsn->getOperand(0), DV.getType());
else if (DVInsn->getOperand(0).isFPImm())
- addConstantFPValue(*VariableDie, DVInsn->getOperand(0));
+ addConstantFPValue(VariableDie, DVInsn->getOperand(0));
else if (DVInsn->getOperand(0).isCImm())
- addConstantValue(*VariableDie, DVInsn->getOperand(0).getCImm(),
- DV.getType());
+ addConstantValue(VariableDie, DVInsn->getOperand(0).getCImm(),
+ isUnsignedDIType(DD, DV.getType()));
+ DV.setDIE(VariableDie);
return VariableDie;
+ } else {
+ // .. else use frame index.
+ int FI = DV.getFrameIndex();
+ if (FI != ~0) {
+ unsigned FrameReg = 0;
+ const TargetFrameLowering *TFI = Asm->TM.getFrameLowering();
+ int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
+ MachineLocation Location(FrameReg, Offset);
+ addVariableAddress(DV, VariableDie, Location);
+ }
}
- // .. else use frame index.
- int FI = DV.getFrameIndex();
- if (FI != ~0) {
- unsigned FrameReg = 0;
- const TargetFrameLowering *TFI =
- Asm->TM.getSubtargetImpl()->getFrameLowering();
- int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
- MachineLocation Location(FrameReg, Offset);
- addVariableAddress(DV, *VariableDie, Location);
- }
-
+ DV.setDIE(VariableDie);
return VariableDie;
}
-std::unique_ptr<DIE> DwarfCompileUnit::constructVariableDIE(
- DbgVariable &DV, const LexicalScope &Scope, DIE *&ObjectPointer) {
- auto Var = constructVariableDIE(DV, Scope.isAbstractScope());
- if (DV.isObjectPointer())
- ObjectPointer = Var.get();
- return Var;
-}
-
-DIE *DwarfCompileUnit::createScopeChildrenDIE(
- LexicalScope *Scope, SmallVectorImpl<std::unique_ptr<DIE>> &Children,
- unsigned *ChildScopeCount) {
- DIE *ObjectPointer = nullptr;
-
- for (DbgVariable *DV : DU->getScopeVariables().lookup(Scope))
- Children.push_back(constructVariableDIE(*DV, *Scope, ObjectPointer));
-
- unsigned ChildCountWithoutScopes = Children.size();
-
- for (LexicalScope *LS : Scope->getChildren())
- constructScopeDIE(LS, Children);
-
- if (ChildScopeCount)
- *ChildScopeCount = Children.size() - ChildCountWithoutScopes;
-
- return ObjectPointer;
-}
-
-void DwarfCompileUnit::constructSubprogramScopeDIE(LexicalScope *Scope) {
- assert(Scope && Scope->getScopeNode());
- assert(!Scope->getInlinedAt());
- assert(!Scope->isAbstractScope());
- DISubprogram Sub(Scope->getScopeNode());
-
- assert(Sub.isSubprogram());
-
- DD->getProcessedSPNodes().insert(Sub);
+/// constructMemberDIE - Construct member DIE from DIDerivedType.
+void CompileUnit::constructMemberDIE(DIE &Buffer, DIDerivedType DT) {
+ DIE *MemberDie = createAndAddDIE(DT.getTag(), Buffer);
+ StringRef Name = DT.getName();
+ if (!Name.empty())
+ addString(MemberDie, dwarf::DW_AT_name, Name);
- DIE &ScopeDIE = updateSubprogramScopeDIE(Sub);
+ addType(MemberDie, resolve(DT.getTypeDerivedFrom()));
- // If this is a variadic function, add an unspecified parameter.
- DITypeArray FnArgs = Sub.getType().getTypeArray();
+ addSourceLine(MemberDie, DT);
- // Collect lexical scope children first.
- // ObjectPointer might be a local (non-argument) local variable if it's a
- // block's synthetic this pointer.
- if (DIE *ObjectPointer = createAndAddScopeChildren(Scope, ScopeDIE))
- addDIEEntry(ScopeDIE, dwarf::DW_AT_object_pointer, *ObjectPointer);
+ DIEBlock *MemLocationDie = new (DIEValueAllocator) DIEBlock();
+ addUInt(MemLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
- // 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) &&
- !includeMinimalInlineScopes())
- ScopeDIE.addChild(make_unique<DIE>(dwarf::DW_TAG_unspecified_parameters));
-}
+ if (DT.getTag() == dwarf::DW_TAG_inheritance && DT.isVirtual()) {
-DIE *DwarfCompileUnit::createAndAddScopeChildren(LexicalScope *Scope,
- DIE &ScopeDIE) {
- // We create children when the scope DIE is not null.
- SmallVector<std::unique_ptr<DIE>, 8> Children;
- DIE *ObjectPointer = createScopeChildrenDIE(Scope, Children);
+ // For C++, virtual base classes are not at fixed offset. Use following
+ // expression to extract appropriate offset from vtable.
+ // BaseAddr = ObAddr + *((*ObAddr) - Offset)
- // Add children
- for (auto &I : Children)
- ScopeDIE.addChild(std::move(I));
+ DIEBlock *VBaseLocationDie = new (DIEValueAllocator) DIEBlock();
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_dup);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_constu);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_udata, DT.getOffsetInBits());
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_minus);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
+ addUInt(VBaseLocationDie, dwarf::DW_FORM_data1, dwarf::DW_OP_plus);
- return ObjectPointer;
-}
-
-void
-DwarfCompileUnit::constructAbstractSubprogramScopeDIE(LexicalScope *Scope) {
- DIE *&AbsDef = DU->getAbstractSPDies()[Scope->getScopeNode()];
- if (AbsDef)
- return;
-
- DISubprogram SP(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
- // any). It could be refactored to some common utility function.
- else if (DISubprogram SPDecl = SP.getFunctionDeclaration()) {
- ContextDIE = &getUnitDie();
- getOrCreateSubprogramDIE(SPDecl);
- } else
- ContextDIE = getOrCreateContextDIE(resolve(SP.getContext()));
-
- // Passing null as the associated DIDescriptor because the abstract definition
- // shouldn't be found by lookup.
- AbsDef =
- &createAndAddDIE(dwarf::DW_TAG_subprogram, *ContextDIE, DIDescriptor());
- applySubprogramAttributesToDefinition(SP, *AbsDef);
-
- 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 *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));
- else if (Entity.isGlobalVariable())
- EntityDie = getOrCreateGlobalVariableDIE(DIGlobalVariable(Entity));
- else
- EntityDie = getDIE(Entity);
- assert(EntityDie);
- addSourceLine(*IMDie, Module.getLineNumber(),
- Module.getContext().getFilename(),
- Module.getContext().getDirectory());
- addDIEEntry(*IMDie, dwarf::DW_AT_import, *EntityDie);
- StringRef Name = Module.getName();
- if (!Name.empty())
- addString(*IMDie, dwarf::DW_AT_name, Name);
-
- return IMDie;
-}
-
-void DwarfCompileUnit::finishSubprogramDefinition(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);
+ addBlock(MemberDie, dwarf::DW_AT_data_member_location, VBaseLocationDie);
} else {
- 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)
- D = getOrCreateSubprogramDIE(SP);
- if (D)
- // And attach the attributes
- applySubprogramAttributesToDefinition(SP, *D);
- }
-}
-void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
- assert(SP.isSubprogram() && "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)
- 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);
- auto VariableDie = constructVariableDIE(NewVar);
- applyVariableAttributes(NewVar, *VariableDie);
- SPDIE->addChild(std::move(VariableDie));
+ uint64_t Size = DT.getSizeInBits();
+ uint64_t FieldSize = getBaseTypeSize(DD, DT);
+ uint64_t OffsetInBytes;
+
+ if (Size != FieldSize) {
+ // Handle bitfield.
+ addUInt(MemberDie, dwarf::DW_AT_byte_size, None,
+ getBaseTypeSize(DD, DT) >> 3);
+ addUInt(MemberDie, dwarf::DW_AT_bit_size, None, DT.getSizeInBits());
+
+ uint64_t Offset = DT.getOffsetInBits();
+ uint64_t AlignMask = ~(DT.getAlignInBits() - 1);
+ uint64_t HiMark = (Offset + FieldSize) & AlignMask;
+ uint64_t FieldOffset = (HiMark - FieldSize);
+ Offset -= FieldOffset;
+
+ // Maybe we need to work from the other end.
+ if (Asm->getDataLayout().isLittleEndian())
+ Offset = FieldSize - (Offset + Size);
+ addUInt(MemberDie, dwarf::DW_AT_bit_offset, None, Offset);
+
+ // Here WD_AT_data_member_location points to the anonymous
+ // field that includes this bit field.
+ OffsetInBytes = FieldOffset >> 3;
+ } else
+ // This is not a bitfield.
+ OffsetInBytes = DT.getOffsetInBits() >> 3;
+ addUInt(MemberDie, dwarf::DW_AT_data_member_location, None, OffsetInBytes);
}
-}
-
-void DwarfCompileUnit::emitHeader(const MCSymbol *ASectionSym) const {
- // Don't bother labeling the .dwo unit, as its offset isn't used.
- if (!Skeleton)
- Asm->OutStreamer.EmitLabel(LabelBegin);
-
- DwarfUnit::emitHeader(ASectionSym);
-}
-
-/// addGlobalName - Add a new global name to the compile unit.
-void DwarfCompileUnit::addGlobalName(StringRef Name, DIE &Die,
- 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(DIType Ty, const DIE &Die,
- 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.variableHasComplexAddress())
- addComplexAddress(DV, Die, dwarf::DW_AT_location, Location);
- else if (DV.isBlockByrefVariable())
- addBlockByrefAddress(DV, Die, dwarf::DW_AT_location, Location);
+ if (DT.isProtected())
+ addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_protected);
+ else if (DT.isPrivate())
+ addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_private);
+ // Otherwise C++ member and base classes are considered public.
else
- addAddress(Die, dwarf::DW_AT_location, Location,
- DV.getVariable().isIndirect());
-}
-
-/// Add an address attribute to a die based on the location provided.
-void DwarfCompileUnit::addAddress(DIE &Die, dwarf::Attribute Attribute,
- const MachineLocation &Location,
- bool Indirect) {
- DIELoc *Loc = new (DIEValueAllocator) DIELoc();
-
- bool validReg;
- if (Location.isReg() && !Indirect)
- validReg = addRegisterOpPiece(*Loc, Location.getReg());
+ addUInt(MemberDie, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_public);
+ if (DT.isVirtual())
+ addUInt(MemberDie, dwarf::DW_AT_virtuality, dwarf::DW_FORM_data1,
+ dwarf::DW_VIRTUALITY_virtual);
+
+ // Objective-C properties.
+ if (MDNode *PNode = DT.getObjCProperty())
+ if (DIEEntry *PropertyDie = getDIEEntry(PNode))
+ MemberDie->addValue(dwarf::DW_AT_APPLE_property, dwarf::DW_FORM_ref4,
+ PropertyDie);
+
+ if (DT.isArtificial())
+ addFlag(MemberDie, dwarf::DW_AT_artificial);
+}
+
+/// getOrCreateStaticMemberDIE - Create new DIE for C++ static member.
+DIE *CompileUnit::getOrCreateStaticMemberDIE(DIDerivedType DT) {
+ if (!DT.Verify())
+ return NULL;
+
+ // Construct the context before querying for the existence of the DIE in case
+ // such construction creates the DIE.
+ DIE *ContextDIE = getOrCreateContextDIE(resolve(DT.getContext()));
+ assert(dwarf::isType(ContextDIE->getTag()) &&
+ "Static member should belong to a type.");
+
+ DIE *StaticMemberDIE = getDIE(DT);
+ if (StaticMemberDIE)
+ return StaticMemberDIE;
+
+ StaticMemberDIE = createAndAddDIE(DT.getTag(), *ContextDIE, DT);
+
+ DIType Ty = resolve(DT.getTypeDerivedFrom());
+
+ addString(StaticMemberDIE, dwarf::DW_AT_name, DT.getName());
+ addType(StaticMemberDIE, Ty);
+ addSourceLine(StaticMemberDIE, DT);
+ addFlag(StaticMemberDIE, dwarf::DW_AT_external);
+ addFlag(StaticMemberDIE, dwarf::DW_AT_declaration);
+
+ // FIXME: We could omit private if the parent is a class_type, and
+ // public if the parent is something else.
+ if (DT.isProtected())
+ addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_protected);
+ else if (DT.isPrivate())
+ addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_private);
else
- validReg = addRegisterOffset(*Loc, Location.getReg(), Location.getOffset());
-
- if (!validReg)
- return;
-
- if (!Location.isReg() && Indirect)
- addUInt(*Loc, dwarf::DW_FORM_data1, dwarf::DW_OP_deref);
-
- // 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);
- DIExpression Expr = DV.getExpression();
- if (Location.getOffset()) {
- if (DwarfExpr.AddMachineRegIndirect(Location.getReg(),
- Location.getOffset())) {
- DwarfExpr.AddExpression(Expr);
- assert(!DV.getVariable().isIndirect()
- && "double indirection not handled");
- }
- } else {
- if (DwarfExpr.AddMachineRegExpression(Expr, Location.getReg()))
- if (DV.getVariable().isIndirect())
- DwarfExpr.EmitOp(dwarf::DW_OP_deref);
- }
-
- // Now attach the location information to the DIE.
- addBlock(Die, Attribute, Loc);
-}
-
-/// Add a Dwarf loclistptr attribute data and value.
-void DwarfCompileUnit::addLocationList(DIE &Die, dwarf::Attribute Attribute,
- unsigned Index) {
- DIEValue *Value = new (DIEValueAllocator) DIELocList(Index);
- dwarf::Form Form = DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
- : dwarf::DW_FORM_data4;
- Die.addValue(Attribute, Form, Value);
-}
-
-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) {
- DIEValue *Value = new (DIEValueAllocator) DIEExpr(Expr);
- Die.addValue((dwarf::Attribute)0, Form, Value);
-}
-
-void DwarfCompileUnit::applySubprogramAttributesToDefinition(DISubprogram SP,
- DIE &SPDie) {
- DISubprogram SPDecl = SP.getFunctionDeclaration();
- DIScope Context = resolve(SPDecl ? SPDecl.getContext() : SP.getContext());
- applySubprogramAttributes(SP, SPDie, includeMinimalInlineScopes());
- addGlobalName(SP.getName(), SPDie, Context);
-}
-
-bool DwarfCompileUnit::isDwoUnit() const {
- return DD->useSplitDwarf() && Skeleton;
-}
+ addUInt(StaticMemberDIE, dwarf::DW_AT_accessibility, dwarf::DW_FORM_data1,
+ dwarf::DW_ACCESS_public);
-bool DwarfCompileUnit::includeMinimalInlineScopes() const {
- return getCUNode().getEmissionKind() == DIBuilder::LineTablesOnly ||
- (DD->useSplitDwarf() && !Skeleton);
+ if (const ConstantInt *CI = dyn_cast_or_null<ConstantInt>(DT.getConstant()))
+ addConstantValue(StaticMemberDIE, CI, isUnsignedDIType(DD, Ty));
+ if (const ConstantFP *CFP = dyn_cast_or_null<ConstantFP>(DT.getConstant()))
+ addConstantFPValue(StaticMemberDIE, CFP);
+
+ return StaticMemberDIE;
+}
+
+void CompileUnit::emitHeader(const MCSection *ASection,
+ const MCSymbol *ASectionSym) {
+ Asm->OutStreamer.AddComment("DWARF version number");
+ Asm->EmitInt16(DD->getDwarfVersion());
+ Asm->OutStreamer.AddComment("Offset Into Abbrev. Section");
+ Asm->EmitSectionOffset(Asm->GetTempSymbol(ASection->getLabelBeginName()),
+ ASectionSym);
+ Asm->OutStreamer.AddComment("Address Size (in bytes)");
+ Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
}
-} // end llvm namespace
Index: src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
diff -u src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h:1.1.1.2.2.1 src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h:1.1.1.2.2.2
--- src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h:1.1.1.2.2.1 Thu Jun 4 20:04:57 2015
+++ src/external/bsd/llvm/dist/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h Thu Jun 4 20:19:12 2015
@@ -11,240 +11,399 @@
//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
-#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
+#ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
+#define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
-#include "DwarfUnit.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/IR/DebugInfo.h"
-#include "llvm/Support/Dwarf.h"
+#include "DIE.h"
+#include "DwarfDebug.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/MC/MCExpr.h"
namespace llvm {
-class AsmPrinter;
-class DIE;
-class DwarfDebug;
-class DwarfFile;
-class MCSymbol;
-class LexicalScope;
-
-class DwarfCompileUnit : public DwarfUnit {
- /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
- /// the need to search for it in applyStmtList.
- unsigned stmtListIndex;
+class MachineLocation;
+class MachineOperand;
+class ConstantInt;
+class ConstantFP;
+class DbgVariable;
+
+//===----------------------------------------------------------------------===//
+/// CompileUnit - This dwarf writer support class manages information associated
+/// with a source file.
+class CompileUnit {
+ /// UniqueID - a numeric ID unique among all CUs in the module
+ ///
+ unsigned UniqueID;
- /// Skeleton unit associated with this unit.
- DwarfCompileUnit *Skeleton;
+ /// Node - MDNode for the compile unit.
+ DICompileUnit Node;
- /// A label at the start of the non-dwo section related to this unit.
- MCSymbol *SectionSym;
+ /// CUDie - Compile unit debug information entry.
+ ///
+ const OwningPtr<DIE> CUDie;
- /// The start of the unit within its section.
- MCSymbol *LabelBegin;
+ /// Asm - Target of Dwarf emission.
+ AsmPrinter *Asm;
- /// GlobalNames - A map of globally visible named entities for this unit.
- StringMap<const DIE *> GlobalNames;
+ // Holders for some common dwarf information.
+ DwarfDebug *DD;
+ DwarfUnits *DU;
- /// GlobalTypes - A map of globally visible types for this unit.
- StringMap<const DIE *> GlobalTypes;
+ /// IndexTyDie - An anonymous type for index type. Owned by CUDie.
+ DIE *IndexTyDie;
- // List of range lists for a given compile unit, separate from the ranges for
- // the CU itself.
- SmallVector<RangeSpanList, 1> CURangeLists;
+ /// MDNodeToDieMap - Tracks the mapping of unit level debug information
+ /// variables to debug information entries.
+ DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
- // List of ranges for a given compile unit.
- SmallVector<RangeSpan, 2> CURanges;
+ /// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug information
+ /// descriptors to debug information entries using a DIEEntry proxy.
+ DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
+
+ /// GlobalNames - A map of globally visible named entities for this unit.
+ ///
+ StringMap<DIE *> GlobalNames;
- // The base address of this unit, if any. Used for relative references in
- // ranges/locs.
- const MCSymbol *BaseAddress;
+ /// GlobalTypes - A map of globally visible types for this unit.
+ ///
+ StringMap<DIE *> GlobalTypes;
- /// \brief Construct a DIE for the given DbgVariable without initializing the
- /// DbgVariable's DIE reference.
- std::unique_ptr<DIE> constructVariableDIEImpl(const DbgVariable &DV,
- bool Abstract);
+ /// AccelNames - A map of names for the name accelerator table.
+ ///
+ StringMap<std::vector<DIE *> > AccelNames;
+ StringMap<std::vector<DIE *> > AccelObjC;
+ StringMap<std::vector<DIE *> > AccelNamespace;
+ StringMap<std::vector<std::pair<DIE *, unsigned> > > AccelTypes;
+
+ /// DIEBlocks - A list of all the DIEBlocks in use.
+ std::vector<DIEBlock *> DIEBlocks;
+
+ /// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
+ /// need DW_AT_containing_type attribute. This attribute points to a DIE that
+ /// corresponds to the MDNode mapped with the subprogram DIE.
+ DenseMap<DIE *, const MDNode *> ContainingTypeMap;
- bool isDwoUnit() const override;
+ // DIEValueAllocator - All DIEValues are allocated through this allocator.
+ BumpPtrAllocator DIEValueAllocator;
- bool includeMinimalInlineScopes() const;
+ // DIEIntegerOne - A preallocated DIEValue because 1 is used frequently.
+ DIEInteger *DIEIntegerOne;
public:
- DwarfCompileUnit(unsigned UID, DICompileUnit Node, AsmPrinter *A,
- DwarfDebug *DW, DwarfFile *DWU);
+ CompileUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A,
+ DwarfDebug *DW, DwarfUnits *DWU);
+ ~CompileUnit();
+
+ // Accessors.
+ unsigned getUniqueID() const { return UniqueID; }
+ uint16_t getLanguage() const { return Node.getLanguage(); }
+ DICompileUnit getNode() const { return Node; }
+ DIE *getCUDie() const { return CUDie.get(); }
+ const StringMap<DIE *> &getGlobalNames() const { return GlobalNames; }
+ const StringMap<DIE *> &getGlobalTypes() const { return GlobalTypes; }
- DwarfCompileUnit *getSkeleton() const {
- return Skeleton;
+ const StringMap<std::vector<DIE *> > &getAccelNames() const {
+ return AccelNames;
+ }
+ const StringMap<std::vector<DIE *> > &getAccelObjC() const {
+ return AccelObjC;
}
+ const StringMap<std::vector<DIE *> > &getAccelNamespace() const {
+ return AccelNamespace;
+ }
+ const StringMap<std::vector<std::pair<DIE *, unsigned> > > &
+ getAccelTypes() const {
+ return AccelTypes;
+ }
+
+ unsigned getDebugInfoOffset() const { return DebugInfoOffset; }
+ void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
- void initStmtList(MCSymbol *DwarfLineSectionSym);
+ /// hasContent - Return true if this compile unit has something to write out.
+ ///
+ bool hasContent() const { return !CUDie->getChildren().empty(); }
- /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
- void applyStmtList(DIE &D);
+ /// getParentContextString - Get a string containing the language specific
+ /// context for a global name.
+ std::string getParentContextString(DIScope Context) const;
- /// getOrCreateGlobalVariableDIE - get or create global variable DIE.
- DIE *getOrCreateGlobalVariableDIE(DIGlobalVariable GV);
+ /// addGlobalName - Add a new global entity to the compile unit.
+ ///
+ void addGlobalName(StringRef Name, DIE *Die, DIScope Context);
- /// addLabelAddress - Add a dwarf label attribute data and value using
- /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
- void addLabelAddress(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label);
+ /// addGlobalType - Add a new global type to the compile unit.
+ ///
+ void addGlobalType(DIType Ty);
+
+ /// addPubTypes - Add a set of types from the subprogram to the global types.
+ void addPubTypes(DISubprogram SP);
+
+ /// addAccelName - Add a new name to the name accelerator table.
+ void addAccelName(StringRef Name, DIE *Die);
- /// addLocalLabelAddress - Add a dwarf label attribute data and value using
- /// DW_FORM_addr only.
- void addLocalLabelAddress(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label);
+ /// addAccelObjC - Add a new name to the ObjC accelerator table.
+ void addAccelObjC(StringRef Name, DIE *Die);
- /// addSectionDelta - Add a label delta attribute data and value.
- void addSectionDelta(DIE &Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
- const MCSymbol *Lo);
+ /// addAccelNamespace - Add a new name to the namespace accelerator table.
+ void addAccelNamespace(StringRef Name, DIE *Die);
- DwarfCompileUnit &getCU() override { return *this; }
+ /// addAccelType - Add a new type to the type accelerator table.
+ void addAccelType(StringRef Name, std::pair<DIE *, unsigned> Die);
- unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
+ /// getDIE - Returns the debug information entry map slot for the
+ /// specified debug variable. We delegate the request to DwarfDebug
+ /// when the MDNode can be part of the type system, since DIEs for
+ /// the type system can be shared across CUs and the mappings are
+ /// kept in DwarfDebug.
+ DIE *getDIE(DIDescriptor D) const;
- /// addRange - Add an address range to the list of ranges for this unit.
- void addRange(RangeSpan Range);
+ DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
- void attachLowHighPC(DIE &D, const MCSymbol *Begin, const MCSymbol *End);
+ /// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
+ /// when the MDNode can be part of the type system, since DIEs for
+ /// the type system can be shared across CUs and the mappings are
+ /// kept in DwarfDebug.
+ void insertDIE(DIDescriptor Desc, DIE *D);
- /// addSectionLabel - Add a Dwarf section label attribute data and value.
+ /// addDie - Adds or interns the DIE to the compile unit.
///
- void addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label, const MCSymbol *Sec);
+ void addDie(DIE *Buffer) { CUDie->addChild(Buffer); }
- /// \brief 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 &updateSubprogramScopeDIE(DISubprogram SP);
+ /// addFlag - Add a flag that is true to the DIE.
+ void addFlag(DIE *Die, dwarf::Attribute Attribute);
- void constructScopeDIE(LexicalScope *Scope,
- SmallVectorImpl<std::unique_ptr<DIE>> &FinalChildren);
+ /// addUInt - Add an unsigned integer attribute data and value.
+ ///
+ void addUInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
+ uint64_t Integer);
- /// \brief A helper function to construct a RangeSpanList for a given
- /// lexical scope.
- void addScopeRangeList(DIE &ScopeDIE, SmallVector<RangeSpan, 2> Range);
+ void addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer);
- void attachRangesOrLowHighPC(DIE &D, SmallVector<RangeSpan, 2> Ranges);
+ /// addSInt - Add an signed integer attribute data and value.
+ ///
+ void addSInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
+ int64_t Integer);
- void attachRangesOrLowHighPC(DIE &D,
- const SmallVectorImpl<InsnRange> &Ranges);
- /// \brief This scope represents inlined body of a function. Construct
- /// DIE to represent this concrete inlined copy of the function.
- std::unique_ptr<DIE> constructInlinedScopeDIE(LexicalScope *Scope);
+ void addSInt(DIEBlock *Die, Optional<dwarf::Form> Form, int64_t Integer);
- /// \brief Construct new DW_TAG_lexical_block for this scope and
- /// attach DW_AT_low_pc/DW_AT_high_pc labels.
- std::unique_ptr<DIE> constructLexicalScopeDIE(LexicalScope *Scope);
+ /// addString - Add a string attribute data and value.
+ ///
+ void addString(DIE *Die, dwarf::Attribute Attribute, const StringRef Str);
- /// constructVariableDIE - Construct a DIE for the given DbgVariable.
- std::unique_ptr<DIE> constructVariableDIE(DbgVariable &DV,
- bool Abstract = false);
+ /// addLocalString - Add a string attribute data and value.
+ ///
+ void addLocalString(DIE *Die, dwarf::Attribute Attribute, const StringRef Str);
+
+ /// addExpr - Add a Dwarf expression attribute data and value.
+ ///
+ void addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr);
- std::unique_ptr<DIE> constructVariableDIE(DbgVariable &DV,
- const LexicalScope &Scope,
- DIE *&ObjectPointer);
+ /// addLabel - Add a Dwarf label attribute data and value.
+ ///
+ void addLabel(DIE *Die, dwarf::Attribute Attribute, dwarf::Form Form,
+ const MCSymbol *Label);
- /// A helper function to create children of a Scope DIE.
- DIE *createScopeChildrenDIE(LexicalScope *Scope,
- SmallVectorImpl<std::unique_ptr<DIE>> &Children,
- unsigned *ChildScopeCount = nullptr);
+ void addLabel(DIEBlock *Die, dwarf::Form Form, const MCSymbol *Label);
- /// \brief Construct a DIE for this subprogram scope.
- void constructSubprogramScopeDIE(LexicalScope *Scope);
+ /// addLabelAddress - Add a dwarf label attribute data and value using
+ /// either DW_FORM_addr or DW_FORM_GNU_addr_index.
+ ///
+ void addLabelAddress(DIE *Die, dwarf::Attribute Attribute, MCSymbol *Label);
- DIE *createAndAddScopeChildren(LexicalScope *Scope, DIE &ScopeDIE);
+ /// addOpAddress - Add a dwarf op address data and value using the
+ /// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
+ ///
+ void addOpAddress(DIEBlock *Die, const MCSymbol *Label);
+
+ /// addDelta - Add a label delta attribute data and value.
+ ///
+ void addDelta(DIE *Die, dwarf::Attribute Attribute, dwarf::Form Form, const MCSymbol *Hi,
+ const MCSymbol *Lo);
- void constructAbstractSubprogramScopeDIE(LexicalScope *Scope);
+ /// addDIEEntry - Add a DIE attribute data and value.
+ ///
+ void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIE *Entry);
- /// \brief Construct import_module DIE.
- std::unique_ptr<DIE>
- constructImportedEntityDIE(const DIImportedEntity &Module);
+ /// addDIEEntry - Add a DIE attribute data and value.
+ ///
+ void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIEEntry *Entry);
- void finishSubprogramDefinition(DISubprogram SP);
+ /// addBlock - Add block data.
+ ///
+ void addBlock(DIE *Die, dwarf::Attribute Attribute, DIEBlock *Block);
- void collectDeadVariables(DISubprogram SP);
+ /// addSourceLine - Add location information to specified debug information
+ /// entry.
+ void addSourceLine(DIE *Die, DIVariable V);
+ void addSourceLine(DIE *Die, DIGlobalVariable G);
+ void addSourceLine(DIE *Die, DISubprogram SP);
+ void addSourceLine(DIE *Die, DIType Ty);
+ void addSourceLine(DIE *Die, DINameSpace NS);
+ void addSourceLine(DIE *Die, DIObjCProperty Ty);
+
+ /// addAddress - Add an address attribute to a die based on the location
+ /// provided.
+ void addAddress(DIE *Die, dwarf::Attribute Attribute, const MachineLocation &Location,
+ bool Indirect = false);
+
+ /// addConstantValue - Add constant value entry in variable DIE.
+ void addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
+ void addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
+ void addConstantValue(DIE *Die, const APInt &Val, bool Unsigned);
+
+ /// addConstantFPValue - Add constant value entry in variable DIE.
+ void addConstantFPValue(DIE *Die, const MachineOperand &MO);
+ void addConstantFPValue(DIE *Die, const ConstantFP *CFP);
+
+ /// addTemplateParams - Add template parameters in buffer.
+ void addTemplateParams(DIE &Buffer, DIArray TParams);
+
+ /// addRegisterOp - Add register operand.
+ void addRegisterOp(DIEBlock *TheDie, unsigned Reg);
+
+ /// addRegisterOffset - Add register offset.
+ void addRegisterOffset(DIEBlock *TheDie, unsigned Reg, int64_t Offset);
+
+ /// addComplexAddress - Start with the address based on the location provided,
+ /// and generate the DWARF information necessary to find the actual variable
+ /// (navigating the extra location information encoded in the type) based on
+ /// the starting location. Add the DWARF information to the die.
+ ///
+ void addComplexAddress(const DbgVariable &DV, DIE *Die, dwarf::Attribute Attribute,
+ const MachineLocation &Location);
- /// Set the skeleton unit associated with this unit.
- void setSkeleton(DwarfCompileUnit &Skel) { Skeleton = &Skel; }
+ // FIXME: Should be reformulated in terms of addComplexAddress.
+ /// addBlockByrefAddress - Start with the address based on the location
+ /// provided, and generate the DWARF information necessary to find the
+ /// actual Block variable (navigating the Block struct) based on the
+ /// starting location. Add the DWARF information to the die. Obsolete,
+ /// please use addComplexAddress instead.
+ ///
+ void addBlockByrefAddress(const DbgVariable &DV, DIE *Die, dwarf::Attribute Attribute,
+ const MachineLocation &Location);
- MCSymbol *getSectionSym() const {
- assert(Section);
- return SectionSym;
- }
+ /// addVariableAddress - Add DW_AT_location attribute for a
+ /// DbgVariable based on provided MachineLocation.
+ void addVariableAddress(const DbgVariable &DV, DIE *Die,
+ MachineLocation Location);
- /// Pass in the SectionSym even though we could recreate it in every compile
- /// unit (type units will have actually distinct symbols once they're in
- /// comdat sections).
- void initSection(const MCSection *Section, MCSymbol *SectionSym) {
- DwarfUnit::initSection(Section);
- this->SectionSym = SectionSym;
+ /// addType - Add a new type attribute to the specified entity. This takes
+ /// and attribute parameter because DW_AT_friend attributes are also
+ /// type references.
+ void addType(DIE *Entity, DIType Ty, dwarf::Attribute Attribute = dwarf::DW_AT_type);
+
+ /// getOrCreateNameSpace - Create a DIE for DINameSpace.
+ DIE *getOrCreateNameSpace(DINameSpace NS);
+
+ /// getOrCreateSubprogramDIE - Create new DIE using SP.
+ DIE *getOrCreateSubprogramDIE(DISubprogram SP);
+
+ /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
+ /// given DIType.
+ DIE *getOrCreateTypeDIE(const MDNode *N);
+
+ /// getOrCreateContextDIE - Get context owner's DIE.
+ DIE *getOrCreateContextDIE(DIScope Context);
+
+ /// createGlobalVariableDIE - create global variable DIE.
+ void createGlobalVariableDIE(DIGlobalVariable GV);
+
+ /// constructContainingTypeDIEs - Construct DIEs for types that contain
+ /// vtables.
+ void constructContainingTypeDIEs();
- // Don't bother labeling the .dwo unit, as its offset isn't used.
- if (!Skeleton)
- LabelBegin =
- Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
- }
+ /// constructVariableDIE - Construct a DIE for the given DbgVariable.
+ DIE *constructVariableDIE(DbgVariable &DV, bool isScopeAbstract);
- unsigned getLength() {
- return sizeof(uint32_t) + // Length field
- getHeaderSize() + UnitDie.getSize();
+ /// Create a DIE with the given Tag, add the DIE to its parent, and
+ /// call insertDIE if MD is not null.
+ DIE *createAndAddDIE(unsigned Tag, DIE &Parent, DIDescriptor N = DIDescriptor());
+
+ /// Compute the size of a header for this unit, not including the initial
+ /// length field.
+ unsigned getHeaderSize() const {
+ return sizeof(int16_t) + // DWARF version number
+ sizeof(int32_t) + // Offset Into Abbrev. Section
+ sizeof(int8_t); // Pointer Size (in bytes)
}
- void emitHeader(const MCSymbol *ASectionSym) const override;
+ /// Emit the header for this unit, not including the initial length field.
+ void emitHeader(const MCSection *ASection, const MCSymbol *ASectionSym);
- MCSymbol *getLabelBegin() const {
- assert(Section);
- return LabelBegin;
- }
+private:
+ /// constructTypeDIE - Construct basic type die from DIBasicType.
+ void constructTypeDIE(DIE &Buffer, DIBasicType BTy);
- /// Add a new global name to the compile unit.
- void addGlobalName(StringRef Name, DIE &Die, DIScope Context) override;
+ /// constructTypeDIE - Construct derived type die from DIDerivedType.
+ void constructTypeDIE(DIE &Buffer, DIDerivedType DTy);
- /// Add a new global type to the compile unit.
- void addGlobalType(DIType Ty, const DIE &Die, DIScope Context) override;
+ /// constructTypeDIE - Construct type DIE from DICompositeType.
+ void constructTypeDIE(DIE &Buffer, DICompositeType CTy);
- const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
- const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
+ /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
+ void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
- /// Add DW_AT_location attribute for a DbgVariable based on provided
- /// MachineLocation.
- void addVariableAddress(const DbgVariable &DV, DIE &Die,
- MachineLocation Location);
- /// Add an address attribute to a die based on the location provided.
- void addAddress(DIE &Die, dwarf::Attribute Attribute,
- const MachineLocation &Location, bool Indirect = false);
-
- /// Start with the address based on the location provided, and generate the
- /// DWARF information necessary to find the actual variable (navigating the
- /// extra location information encoded in the type) based on the starting
- /// location. Add the DWARF information to the die.
- void addComplexAddress(const DbgVariable &DV, DIE &Die,
- dwarf::Attribute Attribute,
- const MachineLocation &Location);
+ /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
+ void constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy);
+
+ /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
+ void constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy);
- /// Add a Dwarf loclistptr attribute data and value.
- void addLocationList(DIE &Die, dwarf::Attribute Attribute, unsigned Index);
- void applyVariableAttributes(const DbgVariable &Var, DIE &VariableDie);
+ /// constructMemberDIE - Construct member DIE from DIDerivedType.
+ void constructMemberDIE(DIE &Buffer, DIDerivedType DT);
- /// Add a Dwarf expression attribute data and value.
- void addExpr(DIELoc &Die, dwarf::Form Form, const MCExpr *Expr);
+ /// constructTemplateTypeParameterDIE - Construct new DIE for the given
+ /// DITemplateTypeParameter.
+ void constructTemplateTypeParameterDIE(DIE &Buffer,
+ DITemplateTypeParameter TP);
- void applySubprogramAttributesToDefinition(DISubprogram SP, DIE &SPDie);
+ /// constructTemplateValueParameterDIE - Construct new DIE for the given
+ /// DITemplateValueParameter.
+ void constructTemplateValueParameterDIE(DIE &Buffer,
+ DITemplateValueParameter TVP);
- /// getRangeLists - Get the vector of range lists.
- const SmallVectorImpl<RangeSpanList> &getRangeLists() const {
- return (Skeleton ? Skeleton : this)->CURangeLists;
+ /// getOrCreateStaticMemberDIE - Create new static data member DIE.
+ DIE *getOrCreateStaticMemberDIE(DIDerivedType DT);
+
+ /// Offset of the CUDie from beginning of debug info section.
+ unsigned DebugInfoOffset;
+
+ /// getLowerBoundDefault - Return the default lower bound for an array. If the
+ /// DWARF version doesn't handle the language, return -1.
+ int64_t getDefaultLowerBound() const;
+
+ /// getDIEEntry - Returns the debug information entry for the specified
+ /// debug variable.
+ DIEEntry *getDIEEntry(const MDNode *N) const {
+ return MDNodeToDIEEntryMap.lookup(N);
}
- /// getRanges - Get the list of ranges for this unit.
- const SmallVectorImpl<RangeSpan> &getRanges() const { return CURanges; }
- SmallVector<RangeSpan, 2> takeRanges() { return std::move(CURanges); }
+ /// insertDIEEntry - Insert debug information entry into the map.
+ void insertDIEEntry(const MDNode *N, DIEEntry *E) {
+ MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
+ }
- void setBaseAddress(const MCSymbol *Base) { BaseAddress = Base; }
- const MCSymbol *getBaseAddress() const { return BaseAddress; }
+ // getIndexTyDie - Get an anonymous type for index type.
+ DIE *getIndexTyDie() { return IndexTyDie; }
+
+ // setIndexTyDie - Set D as anonymous type for index which can be reused
+ // later.
+ void setIndexTyDie(DIE *D) { IndexTyDie = D; }
+
+ /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
+ /// information entry.
+ DIEEntry *createDIEEntry(DIE *Entry);
+
+ /// resolve - Look in the DwarfDebug map for the MDNode that
+ /// corresponds to the reference.
+ template <typename T> T resolve(DIRef<T> Ref) const {
+ return DD->resolve(Ref);
+ }
};
} // end llvm namespace
-
#endif
