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-rw-r--r--include/llvm/MC/MCObjectFileInfo.h20
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfAccelTable.h6
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp13
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfCompileUnit.h28
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfDebug.cpp168
-rw-r--r--lib/CodeGen/AsmPrinter/DwarfDebug.h15
-rw-r--r--lib/MC/MCObjectFileInfo.cpp26
7 files changed, 268 insertions, 8 deletions
diff --git a/include/llvm/MC/MCObjectFileInfo.h b/include/llvm/MC/MCObjectFileInfo.h
index 060d508..8bdcd4d 100644
--- a/include/llvm/MC/MCObjectFileInfo.h
+++ b/include/llvm/MC/MCObjectFileInfo.h
@@ -82,6 +82,14 @@ protected:
/// this is the section to emit them into.
const MCSection *CompactUnwindSection;
+ /// DwarfAccelNamesSection, DwarfAccelObjCSection
+ /// If we use the DWARF accelerated hash tables then we want toe emit these
+ /// sections.
+ const MCSection *DwarfAccelNamesSection;
+ const MCSection *DwarfAccelObjCSection;
+ const MCSection *DwarfAccelNamespaceSection;
+ const MCSection *DwarfAccelTypesSection;
+
// Dwarf sections for debug info. If a target supports debug info, these must
// be set.
const MCSection *DwarfAbbrevSection;
@@ -187,6 +195,18 @@ public:
const MCSection *getCompactUnwindSection() const{
return CompactUnwindSection;
}
+ const MCSection *getDwarfAccelNamesSection() const {
+ return DwarfAccelNamesSection;
+ }
+ const MCSection *getDwarfAccelObjCSection() const {
+ return DwarfAccelObjCSection;
+ }
+ const MCSection *getDwarfAccelNamespaceSection() const {
+ return DwarfAccelNamespaceSection;
+ }
+ const MCSection *getDwarfAccelTypesSection() const {
+ return DwarfAccelTypesSection;
+ }
const MCSection *getDwarfAbbrevSection() const { return DwarfAbbrevSection; }
const MCSection *getDwarfInfoSection() const { return DwarfInfoSection; }
const MCSection *getDwarfLineSection() const { return DwarfLineSection; }
diff --git a/lib/CodeGen/AsmPrinter/DwarfAccelTable.h b/lib/CodeGen/AsmPrinter/DwarfAccelTable.h
index 242841a..2d3f4fd 100644
--- a/lib/CodeGen/AsmPrinter/DwarfAccelTable.h
+++ b/lib/CodeGen/AsmPrinter/DwarfAccelTable.h
@@ -25,7 +25,7 @@
#include <vector>
#include <map>
-// The apple dwarf accelerator tables are an indirect hash table optimized
+// The dwarf accelerator tables are an indirect hash table optimized
// for null lookup rather than access to known data. They are output into
// an on-disk format that looks like this:
//
@@ -176,9 +176,7 @@ public:
#endif
};
- // The data itself consists of a str_offset (to deal with collisions in
- // some magical way? this looks like the KeyType from the spec, which
- // should mean an integer compare on read), a count of the DIEs in the
+ // The data itself consists of a str_offset, a count of the DIEs in the
// hash and the offsets to the DIEs themselves.
// On disk each data section is ended with a 0 KeyType as the end of the
// hash chain.
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 95f1f92..cb80bd8 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -904,8 +904,11 @@ DIE *CompileUnit::getOrCreateNameSpace(DINameSpace NS) {
return NDie;
NDie = new DIE(dwarf::DW_TAG_namespace);
insertDIE(NS, NDie);
- if (!NS.getName().empty())
+ if (!NS.getName().empty()) {
addString(NDie, dwarf::DW_AT_name, NS.getName());
+ addAccelNamespace(NS.getName(), NDie);
+ } else
+ addAccelNamespace("(anonymous namespace)", NDie);
addSourceLine(NDie, NS);
addToContextOwner(NDie, NS.getContext());
return NDie;
@@ -1078,7 +1081,9 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
DIDescriptor GVContext = GV.getContext();
addToContextOwner(VariableDIE, GVContext);
// Add location.
+ bool addToAccelTable = false;
if (isGlobalVariable) {
+ addToAccelTable = true;
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
addUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_addr);
addLabel(Block, 0, dwarf::DW_FORM_udata,
@@ -1097,11 +1102,12 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
addDie(VariableSpecDIE);
} else {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
- }
+ }
} else if (const ConstantInt *CI =
dyn_cast_or_null<ConstantInt>(GV.getConstant()))
addConstantValue(VariableDIE, CI, GTy.isUnsignedDIType());
else if (const ConstantExpr *CE = getMergedGlobalExpr(N->getOperand(11))) {
+ addToAccelTable = true;
// GV is a merged global.
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
Value *Ptr = CE->getOperand(0);
@@ -1116,6 +1122,9 @@ void CompileUnit::createGlobalVariableDIE(const MDNode *N) {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
+ if (addToAccelTable)
+ addAccelName(GV.getName(), VariableDIE);
+
return;
}
diff --git a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
index efab32e..b994ce3 100644
--- a/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
+++ b/lib/CodeGen/AsmPrinter/DwarfCompileUnit.h
@@ -64,6 +64,13 @@ class CompileUnit {
///
StringMap<DIE*> GlobalTypes;
+ /// AccelNames - A map of names for the name accelerator table.
+ ///
+ StringMap<DIE*> AccelNames;
+ StringMap<std::vector<DIE*> > AccelObjC;
+ StringMap<DIE*> AccelNamespace;
+ StringMap<DIE*> AccelTypes;
+
/// DIEBlocks - A list of all the DIEBlocks in use.
std::vector<DIEBlock *> DIEBlocks;
@@ -82,6 +89,13 @@ public:
const StringMap<DIE*> &getGlobals() const { return Globals; }
const StringMap<DIE*> &getGlobalTypes() const { return GlobalTypes; }
+ const StringMap<DIE*> &getAccelNames() const { return AccelNames; }
+ const StringMap<std::vector<DIE*> > &getAccelObjC() const {
+ return AccelObjC;
+ }
+ const StringMap<DIE*> &getAccelNamespace() const { return AccelNamespace; }
+ const StringMap<DIE*> &getAccelTypes() const { return AccelTypes; }
+
/// hasContent - Return true if this compile unit has something to write out.
///
bool hasContent() const { return !CUDie->getChildren().empty(); }
@@ -94,6 +108,20 @@ public:
///
void addGlobalType(DIType Ty);
+
+ /// addAccelName - Add a new name to the name accelerator table.
+ void addAccelName(StringRef Name, DIE *Die) { AccelNames[Name] = Die; }
+ void addAccelObjC(StringRef Name, DIE *Die) {
+ std::vector<DIE*> &DIEs = AccelObjC[Name];
+ DIEs.push_back(Die);
+ }
+ void addAccelNamespace(StringRef Name, DIE *Die) {
+ AccelNamespace[Name] = Die;
+ }
+ void addAccelType(StringRef Name, DIE *Die) {
+ AccelTypes[Name] = Die;
+ }
+
/// getDIE - Returns the debug information entry map slot for the
/// specified debug variable.
DIE *getDIE(const MDNode *N) { return MDNodeToDieMap.lookup(N); }
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 037b4ac..8acc857 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -14,6 +14,7 @@
#define DEBUG_TYPE "dwarfdebug"
#include "DwarfDebug.h"
#include "DIE.h"
+#include "DwarfAccelTable.h"
#include "DwarfCompileUnit.h"
#include "llvm/Constants.h"
#include "llvm/Module.h"
@@ -52,6 +53,10 @@ static cl::opt<bool> UnknownLocations("use-unknown-locations", cl::Hidden,
cl::desc("Make an absence of debug location information explicit."),
cl::init(false));
+static cl::opt<bool> DwarfAccelTables("dwarf-accel-tables", cl::Hidden,
+ cl::desc("Output prototype dwarf accelerator tables."),
+ cl::init(false));
+
namespace {
const char *DWARFGroupName = "DWARF Emission";
const char *DbgTimerName = "DWARF Debug Writer";
@@ -444,6 +449,9 @@ DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
if (DS.isSubprogram())
TheCU->addPubTypes(DISubprogram(DS));
+ if (DS.isSubprogram() && !Scope->isAbstractScope())
+ TheCU->addAccelName(DISubprogram(DS).getName(), ScopeDIE);
+
return ScopeDIE;
}
@@ -524,6 +532,36 @@ CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) {
return NewCU;
}
+static bool isObjCClass(StringRef Name) {
+ return Name[0] == '+' || Name[0] == '-';
+}
+
+static bool hasObjCCategory(StringRef Name) {
+ if (Name[0] != '+' && Name[0] != '-')
+ return false;
+
+ size_t pos = Name.find(')');
+ if (pos != std::string::npos) {
+ if (Name[pos+1] != ' ') return false;
+ return true;
+ }
+
+ return false;
+}
+
+static void getObjCClassCategory(StringRef In, StringRef &Class,
+ StringRef &Category) {
+ if (!hasObjCCategory(In)) {
+ Class = In.slice(In.find('[') + 1, In.find(' '));
+ Category = "";
+ return;
+ }
+
+ Class = In.slice(In.find('[') + 1, In.find('('));
+ Category = In.slice(In.find('[') + 1, In.find(' '));
+ return;
+}
+
/// construct SubprogramDIE - Construct subprogram DIE.
void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
const MDNode *N) {
@@ -561,6 +599,18 @@ void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU,
// Expose as global.
TheCU->addGlobal(SP.getName(), SubprogramDie);
+ // Add to Accel Names
+ TheCU->addAccelName(SP.getName(), SubprogramDie);
+
+ // If this is an Objective-C selector name add it to the ObjC accelerator too.
+ if (isObjCClass(SP.getName())) {
+ StringRef Class, Category;
+ getObjCClassCategory(SP.getName(), Class, Category);
+ TheCU->addAccelObjC(Class, SubprogramDie);
+ if (Category != "")
+ TheCU->addAccelObjC(Category, SubprogramDie);
+ }
+
return;
}
@@ -757,6 +807,14 @@ void DwarfDebug::endModule() {
// Corresponding abbreviations into a abbrev section.
emitAbbreviations();
+ // Emit info into a dwarf accelerator table sections.
+ if (DwarfAccelTables) {
+ emitAccelNames();
+ emitAccelObjC();
+ emitAccelNamespaces();
+ emitAccelTypes();
+ }
+
// Emit info into a debug pubnames section.
emitDebugPubNames();
@@ -1696,6 +1754,116 @@ void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
Asm->EmitInt8(1);
}
+/// emitAccelNames - Emit visible names into a hashed accelerator table
+/// section.
+void DwarfDebug::emitAccelNames() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<DIE*> &Names = TheCU->getAccelNames();
+ for (StringMap<DIE*>::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ DIE *Entity = GI->second;
+ AT.AddName(Name, Entity);
+ }
+ }
+
+ AT.FinalizeTable(Asm, "Names");
+ Asm->OutStreamer.SwitchSection(
+ Asm->getObjFileLowering().getDwarfAccelNamesSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("names_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
+
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
+
+/// emitAccelObjC - Emit objective C classes and categories into a hashed
+/// accelerator table section.
+void DwarfDebug::emitAccelObjC() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<std::vector<DIE*> > &Names = TheCU->getAccelObjC();
+ for (StringMap<std::vector<DIE*> >::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ std::vector<DIE *> Entities = GI->second;
+ for (std::vector<DIE *>::const_iterator DI = Entities.begin(),
+ DE = Entities.end(); DI != DE; ++DI)
+ AT.AddName(Name, (*DI));
+ }
+ }
+
+ AT.FinalizeTable(Asm, "ObjC");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelObjCSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("objc_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
+
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
+
+/// emitAccelNamespace - Emit namespace dies into a hashed accelerator
+/// table.
+void DwarfDebug::emitAccelNamespaces() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<DIE*> &Names = TheCU->getAccelNamespace();
+ for (StringMap<DIE*>::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ DIE *Entity = GI->second;
+ AT.AddName(Name, Entity);
+ }
+ }
+
+ AT.FinalizeTable(Asm, "namespac");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelNamespaceSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("namespac_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
+
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
+
+/// emitAccelTypes() - Emit type dies into a hashed accelerator table.
+void DwarfDebug::emitAccelTypes() {
+ DwarfAccelTable AT(DwarfAccelTable::Atom(DwarfAccelTable::eAtomTypeDIEOffset,
+ dwarf::DW_FORM_data4));
+ for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
+ E = CUMap.end(); I != E; ++I) {
+ CompileUnit *TheCU = I->second;
+ const StringMap<DIE*> &Names = TheCU->getGlobalTypes();
+ //TODO: TheCU->getAccelTypes();
+ for (StringMap<DIE*>::const_iterator
+ GI = Names.begin(), GE = Names.end(); GI != GE; ++GI) {
+ const char *Name = GI->getKeyData();
+ DIE *Entity = GI->second;
+ AT.AddName(Name, Entity);
+ }
+ }
+
+ AT.FinalizeTable(Asm, "types");
+ Asm->OutStreamer.SwitchSection(Asm->getObjFileLowering()
+ .getDwarfAccelTypesSection());
+ MCSymbol *SectionBegin = Asm->GetTempSymbol("types_begin");
+ Asm->OutStreamer.EmitLabel(SectionBegin);
+
+ // Emit the full data.
+ AT.Emit(Asm, SectionBegin, this);
+}
+
/// emitDebugPubNames - Emit visible names into a debug pubnames section.
///
void DwarfDebug::emitDebugPubNames() {
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 7bcc5b4..ce5e59e 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -367,6 +367,21 @@ private:
///
void emitEndOfLineMatrix(unsigned SectionEnd);
+ /// emitAccelNames - Emit visible names into a hashed accelerator table
+ /// section.
+ void emitAccelNames();
+
+ /// emitAccelObjC - Emit objective C classes and categories into a hashed
+ /// accelerator table section.
+ void emitAccelObjC();
+
+ /// emitAccelNamespace - Emit namespace dies into a hashed accelerator
+ /// table.
+ void emitAccelNamespaces();
+
+ /// emitAccelTypes() - Emit type dies into a hashed accelerator table.
+ void emitAccelTypes();
+
/// emitDebugPubNames - Emit visible names into a debug pubnames section.
///
void emitDebugPubNames();
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 397e9c3..1fcda31 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -152,6 +152,24 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
SectionKind::getReadOnly());
// Debug Information.
+ DwarfAccelNamesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_names",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelObjCSection =
+ Ctx->getMachOSection("__DWARF", "__apple_objc",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ // 16 character section limit...
+ DwarfAccelNamespaceSection =
+ Ctx->getMachOSection("__DWARF", "__apple_namespac",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelTypesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_types",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+
DwarfAbbrevSection =
Ctx->getMachOSection("__DWARF", "__debug_abbrev",
MCSectionMachO::S_ATTR_DEBUG,
@@ -506,8 +524,12 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
TTypeEncoding = dwarf::DW_EH_PE_absptr;
- EHFrameSection = 0; // Created on demand.
- CompactUnwindSection = 0; // Used only by selected targets.
+ EHFrameSection = 0; // Created on demand.
+ CompactUnwindSection = 0; // Used only by selected targets.
+ DwarfAccelNamesSection = 0; // Used only by selected targets.
+ DwarfAccelObjCSection = 0; // Used only by selected targets.
+ DwarfAccelNamespaceSection = 0; // Used only by selected targets.
+ DwarfAccelTypesSection = 0; // Used only by selected targets.
Triple T(TT);
Triple::ArchType Arch = T.getArch();
generated by cgit v1.1 at 2025-01-30 13:59:01 +0000