X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCContext.cpp;h=b5ad518d0330e89f6846cee1fe0dcffc6469836d;hb=62663ee66ebb56c586e55b7342546f3bd74c279f;hp=01074eb5e790502b0e760b3d6770b9fa8a6d33b0;hpb=ec77d9ad83cfd14517bb534256feb9c5154a636b;p=oota-llvm.git

diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index 01074eb5e79..b5ad518d033 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -23,6 +23,7 @@
 #include "llvm/MC/MCSymbolCOFF.h"
 #include "llvm/MC/MCSymbolELF.h"
 #include "llvm/MC/MCSymbolMachO.h"
+#include "llvm/Support/COFF.h"
 #include "llvm/Support/ELF.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FileSystem.h"
@@ -41,7 +42,7 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri,
       CurrentDwarfLoc(0, 0, 0, DWARF2_FLAG_IS_STMT, 0, 0), DwarfLocSeen(false),
       GenDwarfForAssembly(false), GenDwarfFileNumber(0), DwarfVersion(4),
       AllowTemporaryLabels(true), DwarfCompileUnitID(0),
-      AutoReset(DoAutoReset) {
+      AutoReset(DoAutoReset), HadError(false) {
 
   std::error_code EC = llvm::sys::fs::current_path(CompilationDir);
   if (EC)
@@ -62,9 +63,6 @@ MCContext::~MCContext() {
 
   // NOTE: The symbols are all allocated out of a bump pointer allocator,
   // we don't need to free them here.
-
-  // If the stream for the .secure_log_unique directive was created free it.
-  delete (raw_ostream *)SecureLog;
 }
 
 //===----------------------------------------------------------------------===//
@@ -73,15 +71,14 @@ MCContext::~MCContext() {
 
 void MCContext::reset() {
   // Call the destructors so the fragments are freed
-  for (auto &I : ELFUniquingMap)
-    I.second->~MCSectionELF();
-  for (auto &I : COFFUniquingMap)
-    I.second->~MCSectionCOFF();
-  for (auto &I : MachOUniquingMap)
-    I.second->~MCSectionMachO();
+  COFFAllocator.DestroyAll();
+  ELFAllocator.DestroyAll();
+  MachOAllocator.DestroyAll();
 
+  MCSubtargetAllocator.DestroyAll();
   UsedNames.clear();
   Symbols.clear();
+  SectionSymbols.clear();
   Allocator.Reset();
   Instances.clear();
   CompilationDir.clear();
@@ -102,6 +99,8 @@ void MCContext::reset() {
   DwarfLocSeen = false;
   GenDwarfForAssembly = false;
   GenDwarfFileNumber = 0;
+
+  HadError = false;
 }
 
 //===----------------------------------------------------------------------===//
@@ -116,7 +115,7 @@ MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) {
 
   MCSymbol *&Sym = Symbols[NameRef];
   if (!Sym)
-    Sym = createSymbol(NameRef, false);
+    Sym = createSymbol(NameRef, false, false);
 
   return Sym;
 }
@@ -175,16 +174,17 @@ MCSymbol *MCContext::createSymbolImpl(const StringMapEntry<bool> *Name,
                                     IsTemporary);
 }
 
-MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix) {
+MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix,
+                                  bool CanBeUnnamed) {
+  if (CanBeUnnamed && !UseNamesOnTempLabels)
+    return createSymbolImpl(nullptr, true);
+
   // Determine whether this is an user writter assembler temporary or normal
   // label, if used.
-  bool IsTemporary = false;
-  if (AllowTemporaryLabels)
+  bool IsTemporary = CanBeUnnamed;
+  if (AllowTemporaryLabels && !IsTemporary)
     IsTemporary = Name.startswith(MAI->getPrivateGlobalPrefix());
 
-  if (IsTemporary && !UseNamesOnTempLabels)
-    return createSymbolImpl(nullptr, true);
-
   SmallString<128> NewName = Name;
   bool AddSuffix = AlwaysAddSuffix;
   unsigned &NextUniqueID = NextID[Name];
@@ -205,20 +205,21 @@ MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix) {
   llvm_unreachable("Infinite loop");
 }
 
-MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix) {
+MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix,
+                                      bool CanBeUnnamed) {
   SmallString<128> NameSV;
   raw_svector_ostream(NameSV) << MAI->getPrivateGlobalPrefix() << Name;
-  return createSymbol(NameSV, AlwaysAddSuffix);
+  return createSymbol(NameSV, AlwaysAddSuffix, CanBeUnnamed);
 }
 
 MCSymbol *MCContext::createLinkerPrivateTempSymbol() {
   SmallString<128> NameSV;
   raw_svector_ostream(NameSV) << MAI->getLinkerPrivateGlobalPrefix() << "tmp";
-  return createSymbol(NameSV, true);
+  return createSymbol(NameSV, true, false);
 }
 
-MCSymbol *MCContext::createTempSymbol() {
-  return createTempSymbol("tmp", true);
+MCSymbol *MCContext::createTempSymbol(bool CanBeUnnamed) {
+  return createTempSymbol("tmp", true, CanBeUnnamed);
 }
 
 unsigned MCContext::NextInstance(unsigned LocalLabelVal) {
@@ -239,7 +240,7 @@ MCSymbol *MCContext::getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal,
                                                        unsigned Instance) {
   MCSymbol *&Sym = LocalSymbols[std::make_pair(LocalLabelVal, Instance)];
   if (!Sym)
-    Sym = createTempSymbol();
+    Sym = createTempSymbol(false);
   return Sym;
 }
 
@@ -291,8 +292,8 @@ MCSectionMachO *MCContext::getMachOSection(StringRef Segment, StringRef Section,
     Begin = createTempSymbol(BeginSymName, false);
 
   // Otherwise, return a new section.
-  return Entry = new (*this) MCSectionMachO(Segment, Section, TypeAndAttributes,
-                                            Reserved2, Kind, Begin);
+  return Entry = new (MachOAllocator.Allocate()) MCSectionMachO(
+             Segment, Section, TypeAndAttributes, Reserved2, Kind, Begin);
 }
 
 void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) {
@@ -319,7 +320,7 @@ MCSectionELF *MCContext::createELFRelSection(StringRef Name, unsigned Type,
   bool Inserted;
   std::tie(I, Inserted) = ELFRelSecNames.insert(std::make_pair(Name, true));
 
-  return new (*this)
+  return new (ELFAllocator.Allocate())
       MCSectionELF(I->getKey(), Type, Flags, SectionKind::getReadOnly(),
                    EntrySize, Group, true, nullptr, Associated);
 }
@@ -364,15 +365,15 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type,
   if (BeginSymName)
     Begin = createTempSymbol(BeginSymName, false);
 
-  MCSectionELF *Result =
-      new (*this) MCSectionELF(CachedName, Type, Flags, Kind, EntrySize,
-                               GroupSym, UniqueID, Begin, Associated);
+  MCSectionELF *Result = new (ELFAllocator.Allocate())
+      MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, GroupSym, UniqueID,
+                   Begin, Associated);
   Entry.second = Result;
   return Result;
 }
 
 MCSectionELF *MCContext::createELFGroupSection(const MCSymbolELF *Group) {
-  MCSectionELF *Result = new (*this)
+  MCSectionELF *Result = new (ELFAllocator.Allocate())
       MCSectionELF(".group", ELF::SHT_GROUP, 0, SectionKind::getReadOnly(), 4,
                    Group, ~0, nullptr, nullptr);
   return Result;
@@ -401,7 +402,7 @@ MCSectionCOFF *MCContext::getCOFFSection(StringRef Section,
     Begin = createTempSymbol(BeginSymName, false);
 
   StringRef CachedName = Iter->first.SectionName;
-  MCSectionCOFF *Result = new (*this) MCSectionCOFF(
+  MCSectionCOFF *Result = new (COFFAllocator.Allocate()) MCSectionCOFF(
       CachedName, Characteristics, COMDATSymbol, Selection, Kind, Begin);
 
   Iter->second = Result;
@@ -438,6 +439,10 @@ MCSectionCOFF *MCContext::getAssociativeCOFFSection(MCSectionCOFF *Sec,
                         COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE);
 }
 
+MCSubtargetInfo &MCContext::getSubtargetCopy(const MCSubtargetInfo &STI) {
+  return *new (MCSubtargetAllocator.Allocate()) MCSubtargetInfo(STI);
+}
+
 //===----------------------------------------------------------------------===//
 // Dwarf Management
 //===----------------------------------------------------------------------===//
@@ -469,14 +474,24 @@ void MCContext::finalizeDwarfSections(MCStreamer &MCOS) {
       [&](MCSection *Sec) { return !MCOS.mayHaveInstructions(*Sec); });
 }
 
-void MCContext::reportFatalError(SMLoc Loc, const Twine &Msg) const {
-  // If we have a source manager and a location, use it. Otherwise just
-  // use the generic report_fatal_error().
-  if (!SrcMgr || Loc == SMLoc())
+//===----------------------------------------------------------------------===//
+// Error Reporting
+//===----------------------------------------------------------------------===//
+
+void MCContext::reportError(SMLoc Loc, const Twine &Msg) {
+  HadError = true;
+
+  // If we have a source manager use it. Otherwise just use the generic
+  // report_fatal_error().
+  if (!SrcMgr)
     report_fatal_error(Msg, false);
 
   // Use the source manager to print the message.
   SrcMgr->PrintMessage(Loc, SourceMgr::DK_Error, Msg);
+}
+
+void MCContext::reportFatalError(SMLoc Loc, const Twine &Msg) {
+  reportError(Loc, Msg);
 
   // If we reached here, we are failing ungracefully. Run the interrupt handlers
   // to make sure any special cleanups get done, in particular that we remove