Centralize the handling of unique ids for temporary labels.

Before this patch code wanting to create temporary labels for a given entity
(function, cu, exception range, etc) had to keep its own counter to have stable
symbol names.

createTempSymbol would still add a suffix to make sure a new symbol was always
returned, but it kept a single counter. Because of that, if we were to use
just createTempSymbol("cu_begin"), the label could change from cu_begin42 to
cu_begin43 because some other code started using temporary labels.

Simplify this by just keeping one counter per prefix and removing the various
specialized counters.

llvm-svn: 232535

diff --git a/llvm/include/llvm/CodeGen/AsmPrinter.h b/llvm/include/llvm/CodeGen/AsmPrinter.h
index 9cd9b62..644d5f4 100644 (file)
--- a/llvm/include/llvm/CodeGen/AsmPrinter.h
+++ b/llvm/include/llvm/CodeGen/AsmPrinter.h
@@ -331,7 +331,7 @@ public:
   // Symbol Lowering Routines.
   //===------------------------------------------------------------------===//
 public:
-  MCSymbol *createTempSymbol(const Twine &Name, unsigned ID) const;
+  MCSymbol *createTempSymbol(const Twine &Name) const;
 
   /// Return the MCSymbol for a private symbol with global value name as its
   /// base, with the specified suffix.
@@ -491,7 +491,6 @@ private:
   mutable const MachineInstr *LastMI;
   mutable unsigned LastFn;
   mutable unsigned Counter;
-  mutable unsigned SetCounter;
 
   /// This method emits the header for the current function.
   void EmitFunctionHeader();

diff --git a/llvm/include/llvm/MC/MCContext.h b/llvm/include/llvm/MC/MCContext.h
index 734103d..064f471 100644 (file)
--- a/llvm/include/llvm/MC/MCContext.h
+++ b/llvm/include/llvm/MC/MCContext.h
@@ -87,8 +87,9 @@ namespace llvm {
     /// artificial symbols.
     StringMap<bool, BumpPtrAllocator&> UsedNames;
 
-    /// The next ID to dole out to an unnamed assembler temporary symbol.
-    unsigned NextUniqueID;
+    /// The next ID to dole out to an unnamed assembler temporary symbol with
+    /// a given prefix.
+    StringMap<unsigned> NextID;
 
     /// Instances of directional local labels.
     DenseMap<unsigned, MCLabel *> Instances;
@@ -171,7 +172,7 @@ namespace llvm {
     /// Do automatic reset in destructor
     bool AutoReset;
 
-    MCSymbol *CreateSymbol(StringRef Name);
+    MCSymbol *CreateSymbol(StringRef Name, bool AlwaysAddSuffix);
 
     MCSymbol *getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal,
                                                 unsigned Instance);
@@ -212,10 +213,7 @@ namespace llvm {
     /// unspecified name.
     MCSymbol *CreateTempSymbol();
 
-    MCSymbol *createTempSymbol(const Twine &Name);
-
-    /// Return a unique identifier for use in constructing symbol names.
-    unsigned getUniqueSymbolID() { return NextUniqueID++; }
+    MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix);
 
     /// Create the definition of a directional local symbol for numbered label
     /// (used for "1:" definitions).

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index c507527..7de5e4f 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -103,7 +103,7 @@ static unsigned getGVAlignmentLog2(const GlobalValue *GV, const DataLayout &DL,
 AsmPrinter::AsmPrinter(TargetMachine &tm, std::unique_ptr<MCStreamer> Streamer)
     : MachineFunctionPass(ID), TM(tm), MAI(tm.getMCAsmInfo()),
       OutContext(Streamer->getContext()), OutStreamer(*Streamer.release()),
-      LastMI(nullptr), LastFn(0), Counter(~0U), SetCounter(0) {
+      LastMI(nullptr), LastFn(0), Counter(~0U) {
   DD = nullptr;
   MMI = nullptr;
   LI = nullptr;
@@ -890,7 +890,7 @@ void AsmPrinter::EmitFunctionBody() {
   if (!MMI->getLandingPads().empty() || MMI->hasDebugInfo() ||
       MAI->hasDotTypeDotSizeDirective()) {
     // Create a symbol for the end of function.
-    CurrentFnEnd = createTempSymbol("func_end", getFunctionNumber());
+    CurrentFnEnd = createTempSymbol("func_end");
     OutStreamer.EmitLabel(CurrentFnEnd);
   }
 
@@ -1133,7 +1133,7 @@ bool AsmPrinter::doFinalization(Module &M) {
 
 MCSymbol *AsmPrinter::getCurExceptionSym() {
   if (!CurExceptionSym)
-    CurExceptionSym = createTempSymbol("exception", getFunctionNumber());
+    CurExceptionSym = createTempSymbol("exception");
   return CurExceptionSym;
 }
 
@@ -1147,7 +1147,7 @@ void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
   bool NeedsLocalForSize = MAI->needsLocalForSize();
   if (!MMI->getLandingPads().empty() || MMI->hasDebugInfo() ||
       NeedsLocalForSize) {
-    CurrentFnBegin = createTempSymbol("func_begin", getFunctionNumber());
+    CurrentFnBegin = createTempSymbol("func_begin");
     if (NeedsLocalForSize)
       CurrentFnSymForSize = CurrentFnBegin;
   }
@@ -1577,7 +1577,7 @@ void AsmPrinter::EmitLabelDifference(const MCSymbol *Hi, const MCSymbol *Lo,
   }
 
   // Otherwise, emit with .set (aka assignment).
-  MCSymbol *SetLabel = createTempSymbol("set", SetCounter++);
+  MCSymbol *SetLabel = createTempSymbol("set");
   OutStreamer.EmitAssignment(SetLabel, Diff);
   OutStreamer.EmitSymbolValue(SetLabel, Size);
 }
@@ -2252,8 +2252,8 @@ void AsmPrinter::printOffset(int64_t Offset, raw_ostream &OS) const {
 // Symbol Lowering Routines.
 //===----------------------------------------------------------------------===//
 
-MCSymbol *AsmPrinter::createTempSymbol(const Twine &Name, unsigned ID) const {
-  return OutContext.createTempSymbol(Name + Twine(ID));
+MCSymbol *AsmPrinter::createTempSymbol(const Twine &Name) const {
+  return OutContext.createTempSymbol(Name, true);
 }
 
 MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA) const {

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfAccelTable.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfAccelTable.cpp
index 28cc41c..f64338e 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfAccelTable.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfAccelTable.cpp
@@ -96,7 +96,7 @@ void DwarfAccelTable::FinalizeTable(AsmPrinter *Asm, StringRef Prefix) {
   for (size_t i = 0, e = Data.size(); i < e; ++i) {
     uint32_t bucket = Data[i]->HashValue % Header.bucket_count;
     Buckets[bucket].push_back(Data[i]);
-    Data[i]->Sym = Asm->createTempSymbol(Prefix, i);
+    Data[i]->Sym = Asm->createTempSymbol(Prefix);
   }
 
   // Sort the contents of the buckets by hash value so that hash

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index eff6525..eee5fc5 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -379,9 +379,7 @@ void DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
   const MCSymbol *RangeSectionSym =
       TLOF.getDwarfRangesSection()->getBeginSymbol();
 
-  RangeSpanList List(
-      Asm->createTempSymbol("debug_ranges", DD->getNextRangeNumber()),
-      std::move(Range));
+  RangeSpanList List(Asm->createTempSymbol("debug_ranges"), std::move(Range));
 
   // Under fission, ranges are specified by constant offsets relative to the
   // CU's DW_AT_GNU_ranges_base.
@@ -709,7 +707,7 @@ void DwarfCompileUnit::collectDeadVariables(DISubprogram SP) {
 void DwarfCompileUnit::emitHeader(bool UseOffsets) {
   // Don't bother labeling the .dwo unit, as its offset isn't used.
   if (!Skeleton) {
-    LabelBegin = Asm->createTempSymbol("cu_begin", getUniqueID());
+    LabelBegin = Asm->createTempSymbol("cu_begin");
     Asm->OutStreamer.EmitLabel(LabelBegin);
   }
 

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 2ca29dc..df5dd2e 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -188,7 +188,7 @@ static LLVM_CONSTEXPR DwarfAccelTable::Atom TypeAtoms[] = {
     DwarfAccelTable::Atom(dwarf::DW_ATOM_type_flags, dwarf::DW_FORM_data1)};
 
 DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
-    : Asm(A), MMI(Asm->MMI), PrevLabel(nullptr), GlobalRangeCount(0),
+    : Asm(A), MMI(Asm->MMI), PrevLabel(nullptr),
       InfoHolder(A, "info_string", DIEValueAllocator),
       UsedNonDefaultText(false),
       SkeletonHolder(A, "skel_string", DIEValueAllocator),
@@ -926,8 +926,7 @@ DwarfDebug::collectVariableInfo(DwarfCompileUnit &TheCU, DISubprogram SP,
     DotDebugLocEntries.resize(DotDebugLocEntries.size() + 1);
     DebugLocList &LocList = DotDebugLocEntries.back();
     LocList.CU = &TheCU;
-    LocList.Label =
-        Asm->createTempSymbol("debug_loc", DotDebugLocEntries.size() - 1);
+    LocList.Label = Asm->createTempSymbol("debug_loc");
 
     // Build the location list for this variable.
     buildLocationList(LocList.List, Ranges);
@@ -1415,15 +1414,14 @@ void DwarfDebug::emitDebugPubSection(
 
     if (auto *Skeleton = TheU->getSkeleton())
       TheU = Skeleton;
-    unsigned ID = TheU->getUniqueID();
 
     // Start the dwarf pubnames section.
     Asm->OutStreamer.SwitchSection(PSec);
 
     // Emit the header.
     Asm->OutStreamer.AddComment("Length of Public " + Name + " Info");
-    MCSymbol *BeginLabel = Asm->createTempSymbol("pub" + Name + "_begin", ID);
-    MCSymbol *EndLabel = Asm->createTempSymbol("pub" + Name + "_end", ID);
+    MCSymbol *BeginLabel = Asm->createTempSymbol("pub" + Name + "_begin");
+    MCSymbol *EndLabel = Asm->createTempSymbol("pub" + Name + "_end");
     Asm->EmitLabelDifference(EndLabel, BeginLabel, 4);
 
     Asm->OutStreamer.EmitLabel(BeginLabel);
@@ -1659,7 +1657,6 @@ void DwarfDebug::emitDebugARanges() {
   }
 
   // Add terminating symbols for each section.
-  unsigned ID = 0;
   for (const auto &I : SectionMap) {
     const MCSection *Section = I.first;
     MCSymbol *Sym = nullptr;
@@ -1669,14 +1666,13 @@ void DwarfDebug::emitDebugARanges() {
       // if we know the section name up-front. For user-created sections, the
       // resulting label may not be valid to use as a label. (section names can
       // use a greater set of characters on some systems)
-      Sym = Asm->createTempSymbol("debug_end", ID);
+      Sym = Asm->createTempSymbol("debug_end");
       Asm->OutStreamer.SwitchSection(Section);
       Asm->OutStreamer.EmitLabel(Sym);
     }
 
     // Insert a final terminator.
     SectionMap[Section].push_back(SymbolCU(nullptr, Sym));
-    ++ID;
   }
 
   DenseMap<DwarfCompileUnit *, std::vector<ArangeSpan>> Spans;

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 3a5a7f6..74db3ef 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -248,9 +248,6 @@ class DwarfDebug : public AsmPrinterHandler {
   // table for the same directory as DW_AT_comp_dir.
   StringRef CompilationDir;
 
-  // Counter for assigning globally unique IDs for ranges.
-  unsigned GlobalRangeCount;
-
   // Holder for the file specific debug information.
   DwarfFile InfoHolder;
 
@@ -619,12 +616,6 @@ public:
   /// \brief Return Label immediately following the instruction.
   MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
 
-  // FIXME: Consider rolling ranges up into DwarfDebug since we use a single
-  // range_base anyway, so there's no need to keep them as separate per-CU range
-  // lists. (though one day we might end up with a range.dwo section, in which
-  // case it'd go to DwarfFile)
-  unsigned getNextRangeNumber() { return GlobalRangeCount++; }
-
   // FIXME: Sink these functions down into DwarfFile/Dwarf*Unit.
 
   SmallPtrSet<const MDNode *, 16> &getProcessedSPNodes() {

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfStringPool.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfStringPool.cpp
index 75249be..165ef16 100644 (file)
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfStringPool.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfStringPool.cpp
@@ -19,7 +19,7 @@ getEntry(AsmPrinter &Asm,
   std::pair<MCSymbol *, unsigned> &Entry = Pool[Str];
   if (!Entry.first) {
     Entry.second = Pool.size() - 1;
-    Entry.first = Asm.createTempSymbol(Prefix, Entry.second);
+    Entry.first = Asm.createTempSymbol(Prefix);
   }
   return Entry;
 }

diff --git a/llvm/lib/MC/MCContext.cpp b/llvm/lib/MC/MCContext.cpp
index b0e7cf5..3cb3ea1 100644 (file)
--- a/llvm/lib/MC/MCContext.cpp
+++ b/llvm/lib/MC/MCContext.cpp
@@ -34,7 +34,7 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri,
                      const MCObjectFileInfo *mofi, const SourceMgr *mgr,
                      bool DoAutoReset)
     : SrcMgr(mgr), MAI(mai), MRI(mri), MOFI(mofi), Allocator(),
-      Symbols(Allocator), UsedNames(Allocator), NextUniqueID(0),
+      Symbols(Allocator), UsedNames(Allocator),
       CurrentDwarfLoc(0, 0, 0, DWARF2_FLAG_IS_STMT, 0, 0), DwarfLocSeen(false),
       GenDwarfForAssembly(false), GenDwarfFileNumber(0), DwarfVersion(4),
       AllowTemporaryLabels(true), DwarfCompileUnitID(0),
@@ -87,7 +87,7 @@ void MCContext::reset() {
   ELFUniquingMap.clear();
   COFFUniquingMap.clear();
 
-  NextUniqueID = 0;
+  NextID.clear();
   AllowTemporaryLabels = true;
   DwarfLocSeen = false;
   GenDwarfForAssembly = false;
@@ -106,7 +106,7 @@ MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
 
   MCSymbol *&Sym = Symbols[NameRef];
   if (!Sym)
-    Sym = CreateSymbol(NameRef);
+    Sym = CreateSymbol(NameRef, false);
 
   return Sym;
 }
@@ -139,49 +139,48 @@ MCSymbol *MCContext::getOrCreateFrameAllocSymbol(StringRef FuncName,
                            "$frame_escape_" + Twine(Idx));
 }
 
-MCSymbol *MCContext::CreateSymbol(StringRef Name) {
+MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) {
   // Determine whether this is an assembler temporary or normal label, if used.
-  bool isTemporary = false;
+  bool IsTemporary = false;
   if (AllowTemporaryLabels)
-    isTemporary = Name.startswith(MAI->getPrivateGlobalPrefix());
+    IsTemporary = Name.startswith(MAI->getPrivateGlobalPrefix());
 
-  auto NameEntry = UsedNames.insert(std::make_pair(Name, true));
-  if (!NameEntry.second) {
-    assert(isTemporary && "Cannot rename non-temporary symbols");
-    SmallString<128> NewName = Name;
-    do {
+  SmallString<128> NewName = Name;
+  bool AddSuffix = AlwaysAddSuffix;
+  unsigned &NextUniqueID = NextID[Name];
+  for (;;) {
+    if (AddSuffix) {
       NewName.resize(Name.size());
       raw_svector_ostream(NewName) << NextUniqueID++;
-      NameEntry = UsedNames.insert(std::make_pair(NewName, true));
-    } while (!NameEntry.second);
+    }
+    auto NameEntry = UsedNames.insert(std::make_pair(NewName, true));
+    if (NameEntry.second) {
+      // Ok, we found a name. Have the MCSymbol object itself refer to the copy
+      // of the string that is embedded in the UsedNames entry.
+      MCSymbol *Result =
+          new (*this) MCSymbol(NameEntry.first->getKey(), IsTemporary);
+      return Result;
+    }
+    assert(IsTemporary && "Cannot rename non-temporary symbols");
+    AddSuffix = true;
   }
-
-  // Ok, the entry doesn't already exist.  Have the MCSymbol object itself refer
-  // to the copy of the string that is embedded in the UsedNames entry.
-  MCSymbol *Result =
-      new (*this) MCSymbol(NameEntry.first->getKey(), isTemporary);
-
-  return Result;
+  llvm_unreachable("Infinite loop");
 }
 
-MCSymbol *MCContext::createTempSymbol(const Twine &Name) {
+MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix) {
   SmallString<128> NameSV;
   raw_svector_ostream(NameSV) << MAI->getPrivateGlobalPrefix() << Name;
-  return CreateSymbol(NameSV);
+  return CreateSymbol(NameSV, AlwaysAddSuffix);
 }
 
 MCSymbol *MCContext::CreateLinkerPrivateTempSymbol() {
   SmallString<128> NameSV;
-  raw_svector_ostream(NameSV)
-    << MAI->getLinkerPrivateGlobalPrefix() << "tmp" << NextUniqueID++;
-  return CreateSymbol(NameSV);
+  raw_svector_ostream(NameSV) << MAI->getLinkerPrivateGlobalPrefix() << "tmp";
+  return CreateSymbol(NameSV, true);
 }
 
 MCSymbol *MCContext::CreateTempSymbol() {
-  SmallString<128> NameSV;
-  raw_svector_ostream(NameSV)
-    << MAI->getPrivateGlobalPrefix() << "tmp" << NextUniqueID++;
-  return CreateSymbol(NameSV);
+  return createTempSymbol("tmp", true);
 }
 
 unsigned MCContext::NextInstance(unsigned LocalLabelVal) {
@@ -251,7 +250,7 @@ MCContext::getMachOSection(StringRef Segment, StringRef Section,
 
   MCSymbol *Begin = nullptr;
   if (BeginSymName)
-    Begin = createTempSymbol(BeginSymName);
+    Begin = createTempSymbol(BeginSymName, false);
 
   // Otherwise, return a new section.
   return Entry = new (*this) MCSectionMachO(Segment, Section, TypeAndAttributes,
@@ -302,7 +301,7 @@ const MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
 
   MCSymbol *Begin = nullptr;
   if (BeginSymName)
-    Begin = createTempSymbol(BeginSymName);
+    Begin = createTempSymbol(BeginSymName, false);
 
   MCSectionELF *Result = new (*this) MCSectionELF(
       CachedName, Type, Flags, Kind, EntrySize, GroupSym, Unique, Begin);
@@ -344,7 +343,7 @@ MCContext::getCOFFSection(StringRef Section, unsigned Characteristics,
 
   MCSymbol *Begin = nullptr;
   if (BeginSymName)
-    Begin = createTempSymbol(BeginSymName);
+    Begin = createTempSymbol(BeginSymName, false);
 
   StringRef CachedName = std::get<0>(Iter->first);
   MCSectionCOFF *Result = new (*this) MCSectionCOFF(

diff --git a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
index 92d8620..3afdd40 100644 (file)
--- a/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
+++ b/llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
@@ -52,7 +52,7 @@ class AArch64AsmPrinter : public AsmPrinter {
 public:
   AArch64AsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer)
       : AsmPrinter(TM, std::move(Streamer)), MCInstLowering(OutContext, *this),
-        SM(*this), AArch64FI(nullptr), LOHLabelCounter(0) {}
+        SM(*this), AArch64FI(nullptr) {}
 
   const char *getPassName() const override {
     return "AArch64 Assembly Printer";
@@ -113,7 +113,6 @@ private:
 
   typedef std::map<const MachineInstr *, MCSymbol *> MInstToMCSymbol;
   MInstToMCSymbol LOHInstToLabel;
-  unsigned LOHLabelCounter;
 };
 
 } // end of anonymous namespace
@@ -464,7 +463,7 @@ void AArch64AsmPrinter::EmitInstruction(const MachineInstr *MI) {
 
   if (AArch64FI->getLOHRelated().count(MI)) {
     // Generate a label for LOH related instruction
-    MCSymbol *LOHLabel = createTempSymbol("loh", LOHLabelCounter++);
+    MCSymbol *LOHLabel = createTempSymbol("loh");
     // Associate the instruction with the label
     LOHInstToLabel[MI] = LOHLabel;
     OutStreamer.EmitLabel(LOHLabel);

diff --git a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
index e8bfd68..cd60906 100644 (file)
--- a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -69,12 +69,11 @@ namespace {
   protected:
     MapVector<MCSymbol*, MCSymbol*> TOC;
     const PPCSubtarget *Subtarget;
-    uint64_t TOCLabelID;
     StackMaps SM;
   public:
     explicit PPCAsmPrinter(TargetMachine &TM,
                            std::unique_ptr<MCStreamer> Streamer)
-        : AsmPrinter(TM, std::move(Streamer)), TOCLabelID(0), SM(*this) {}
+        : AsmPrinter(TM, std::move(Streamer)), SM(*this) {}
 
     const char *getPassName() const override {
       return "PowerPC Assembly Printer";
@@ -323,7 +322,7 @@ bool PPCAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
 MCSymbol *PPCAsmPrinter::lookUpOrCreateTOCEntry(MCSymbol *Sym) {
   MCSymbol *&TOCEntry = TOC[Sym];
   if (!TOCEntry)
-    TOCEntry = createTempSymbol("C", TOCLabelID++);
+    TOCEntry = createTempSymbol("C");
   return TOCEntry;
 }
 

diff --git a/llvm/test/DebugInfo/X86/dwarf-aranges.ll b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
index 56acbdf..701da1f 100644 (file)
--- a/llvm/test/DebugInfo/X86/dwarf-aranges.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
@@ -23,7 +23,7 @@
 
 ; <text section> - it should have made one span covering all functions in this CU.
 ; CHECK-NEXT: .quad .Lfunc_begin0
-; CHECK-NEXT: .quad .Ldebug_end3-.Lfunc_begin0
+; CHECK-NEXT: .quad .Ldebug_end2-.Lfunc_begin0
 
 ; -- finish --
 ; CHECK-NEXT: # ARange terminator

diff --git a/llvm/test/MC/AsmParser/rename.s b/llvm/test/MC/AsmParser/rename.s
index 934cee8..c794d8b 100644 (file)
--- a/llvm/test/MC/AsmParser/rename.s
+++ b/llvm/test/MC/AsmParser/rename.s
@@ -10,5 +10,5 @@
 // CHECK: .size  bar, .Ltmp0-bar
 // CHECK: .Ltmp01
 // CHECK: .size foo, .Ltmp01-foo
-// CHECK: .Ltmp02
-// CHECK: .size qux, .Ltmp02-qux
+// CHECK: .Ltmp00
+// CHECK: .size qux, .Ltmp00-qux

diff --git a/llvm/tools/dsymutil/DwarfLinker.cpp b/llvm/tools/dsymutil/DwarfLinker.cpp
index 2ad6ad6..4326be4 100644 (file)
--- a/llvm/tools/dsymutil/DwarfLinker.cpp
+++ b/llvm/tools/dsymutil/DwarfLinker.cpp
@@ -653,8 +653,8 @@ void DwarfStreamer::emitUnitRangesEntries(CompileUnit &Unit,
   if (!Ranges.empty()) {
     MS->SwitchSection(MC->getObjectFileInfo()->getDwarfARangesSection());
 
-    MCSymbol *BeginLabel = Asm->createTempSymbol("Barange", Unit.getUniqueID());
-    MCSymbol *EndLabel = Asm->createTempSymbol("Earange", Unit.getUniqueID());
+    MCSymbol *BeginLabel = Asm->createTempSymbol("Barange");
+    MCSymbol *EndLabel = Asm->createTempSymbol("Earange");
 
     unsigned HeaderSize =
         sizeof(int32_t) + // Size of contents (w/o this field
@@ -918,10 +918,8 @@ void DwarfStreamer::emitPubSectionForUnit(
 
   // Start the dwarf pubnames section.
   Asm->OutStreamer.SwitchSection(Sec);
-  MCSymbol *BeginLabel =
-      Asm->createTempSymbol("pub" + SecName + "_begin", Unit.getUniqueID());
-  MCSymbol *EndLabel =
-      Asm->createTempSymbol("pub" + SecName + "_end", Unit.getUniqueID());
+  MCSymbol *BeginLabel = Asm->createTempSymbol("pub" + SecName + "_begin");
+  MCSymbol *EndLabel = Asm->createTempSymbol("pub" + SecName + "_end");
 
   bool HeaderEmitted = false;
   // Emit the pubnames for this compilation unit.