[PowerPC] Delete PPCDarwinAsmPrinter and PPCMCAsmInfoDarwin

Darwin support has been removed.

Reviewed By: nemanjai

Differential Revision: https://reviews.llvm.org/D72063

Author: MaskRay

llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp

@@ -15,33 +15,6 @@
 
 using namespace llvm;
 
-void PPCMCAsmInfoDarwin::anchor() { }
-
-PPCMCAsmInfoDarwin::PPCMCAsmInfoDarwin(bool is64Bit, const Triple& T) {
-  if (is64Bit) {
-    CodePointerSize = CalleeSaveStackSlotSize = 8;
-  }
-  IsLittleEndian = false;
-
-  SeparatorString = "@";
-  CommentString = ";";
-  ExceptionsType = ExceptionHandling::DwarfCFI;
-
-  if (!is64Bit)
-    Data64bitsDirective = nullptr; // We can't emit a 64-bit unit in PPC32 mode.
-
-  AssemblerDialect = 1;           // New-Style mnemonics.
-  SupportsDebugInformation= true; // Debug information.
-
-  // The installed assembler for OSX < 10.6 lacks some directives.
-  // FIXME: this should really be a check on the assembler characteristics
-  // rather than OS version
-  if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
-    HasWeakDefCanBeHiddenDirective = false;
-
-  UseIntegratedAssembler = true;
-}
-
 void PPCELFMCAsmInfo::anchor() { }
 
 PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {

llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.h

@@ -20,13 +20,6 @@
 namespace llvm {
 class Triple;
 
-class PPCMCAsmInfoDarwin : public MCAsmInfoDarwin {
-  virtual void anchor();
-
-public:
-  explicit PPCMCAsmInfoDarwin(bool is64Bit, const Triple &);
-};
-
 class PPCELFMCAsmInfo : public MCAsmInfoELF {
   void anchor() override;
 

llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp

@@ -83,9 +83,7 @@ static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI,
                   TheTriple.getArch() == Triple::ppc64le);
 
   MCAsmInfo *MAI;
-  if (TheTriple.isOSDarwin())
-    MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple);
-  else if (TheTriple.isOSBinFormatXCOFF())
+  if (TheTriple.isOSBinFormatXCOFF())
     MAI = new PPCXCOFFMCAsmInfo(isPPC64, TheTriple);
   else
     MAI = new PPCELFMCAsmInfo(isPPC64, TheTriple);

llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp

@@ -147,22 +147,6 @@ class PPCLinuxAsmPrinter : public PPCAsmPrinter {
   void EmitInstruction(const MachineInstr *MI) override;
 };
 
-/// PPCDarwinAsmPrinter - PowerPC assembly printer, customized for Darwin/Mac
-/// OS X
-class PPCDarwinAsmPrinter : public PPCAsmPrinter {
-public:
-  explicit PPCDarwinAsmPrinter(TargetMachine &TM,
-                               std::unique_ptr<MCStreamer> Streamer)
-      : PPCAsmPrinter(TM, std::move(Streamer)) {}
-
-  StringRef getPassName() const override {
-    return "Darwin PPC Assembly Printer";
-  }
-
-  bool doFinalization(Module &M) override;
-  void EmitStartOfAsmFile(Module &M) override;
-};
-
 class PPCAIXAsmPrinter : public PPCAsmPrinter {
 private:
   static void ValidateGV(const GlobalVariable *GV);
@@ -1595,152 +1579,6 @@ void PPCLinuxAsmPrinter::EmitFunctionBodyEnd() {
   }
 }
 
-void PPCDarwinAsmPrinter::EmitStartOfAsmFile(Module &M) {
-  static const char *const CPUDirectives[] = {
-    "",
-    "ppc",
-    "ppc440",
-    "ppc601",
-    "ppc602",
-    "ppc603",
-    "ppc7400",
-    "ppc750",
-    "ppc970",
-    "ppcA2",
-    "ppce500",
-    "ppce500mc",
-    "ppce5500",
-    "power3",
-    "power4",
-    "power5",
-    "power5x",
-    "power6",
-    "power6x",
-    "power7",
-    // FIXME: why is power8 missing here?
-    "ppc64",
-    "ppc64le",
-    "power9",
-    "future"
-  };
-
-  // Get the numerically largest directive.
-  // FIXME: How should we merge darwin directives?
-  unsigned Directive = PPC::DIR_NONE;
-  for (const Function &F : M) {
-    const PPCSubtarget &STI = TM.getSubtarget<PPCSubtarget>(F);
-    unsigned FDir = STI.getCPUDirective();
-    Directive = Directive > FDir ? FDir : STI.getCPUDirective();
-    if (STI.hasMFOCRF() && Directive < PPC::DIR_970)
-      Directive = PPC::DIR_970;
-    if (STI.hasAltivec() && Directive < PPC::DIR_7400)
-      Directive = PPC::DIR_7400;
-    if (STI.isPPC64() && Directive < PPC::DIR_64)
-      Directive = PPC::DIR_64;
-  }
-
-  assert(Directive <= PPC::DIR_64 && "Directive out of range.");
-
-  assert(Directive < array_lengthof(CPUDirectives) &&
-         "CPUDirectives[] might not be up-to-date!");
-  PPCTargetStreamer &TStreamer =
-      *static_cast<PPCTargetStreamer *>(OutStreamer->getTargetStreamer());
-  TStreamer.emitMachine(CPUDirectives[Directive]);
-
-  // Prime text sections so they are adjacent.  This reduces the likelihood a
-  // large data or debug section causes a branch to exceed 16M limit.
-  const TargetLoweringObjectFileMachO &TLOFMacho =
-      static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
-  OutStreamer->SwitchSection(TLOFMacho.getTextCoalSection());
-  if (TM.getRelocationModel() == Reloc::PIC_) {
-    OutStreamer->SwitchSection(
-           OutContext.getMachOSection("__TEXT", "__picsymbolstub1",
-                                      MachO::S_SYMBOL_STUBS |
-                                      MachO::S_ATTR_PURE_INSTRUCTIONS,
-                                      32, SectionKind::getText()));
-  } else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
-    OutStreamer->SwitchSection(
-           OutContext.getMachOSection("__TEXT","__symbol_stub1",
-                                      MachO::S_SYMBOL_STUBS |
-                                      MachO::S_ATTR_PURE_INSTRUCTIONS,
-                                      16, SectionKind::getText()));
-  }
-  OutStreamer->SwitchSection(getObjFileLowering().getTextSection());
-}
-
-bool PPCDarwinAsmPrinter::doFinalization(Module &M) {
-  bool isPPC64 = getDataLayout().getPointerSizeInBits() == 64;
-
-  // Darwin/PPC always uses mach-o.
-  const TargetLoweringObjectFileMachO &TLOFMacho =
-      static_cast<const TargetLoweringObjectFileMachO &>(getObjFileLowering());
-  if (MMI) {
-    MachineModuleInfoMachO &MMIMacho =
-        MMI->getObjFileInfo<MachineModuleInfoMachO>();
-
-    if (MAI->doesSupportExceptionHandling()) {
-      // Add the (possibly multiple) personalities to the set of global values.
-      // Only referenced functions get into the Personalities list.
-      for (const Function *Personality : MMI->getPersonalities()) {
-        if (Personality) {
-          MCSymbol *NLPSym =
-              getSymbolWithGlobalValueBase(Personality, "$non_lazy_ptr");
-          MachineModuleInfoImpl::StubValueTy &StubSym =
-              MMIMacho.getGVStubEntry(NLPSym);
-          StubSym =
-              MachineModuleInfoImpl::StubValueTy(getSymbol(Personality), true);
-        }
-      }
-    }
-
-    // Output stubs for dynamically-linked functions.
-    MachineModuleInfoMachO::SymbolListTy Stubs = MMIMacho.GetGVStubList();
-
-    // Output macho stubs for external and common global variables.
-    if (!Stubs.empty()) {
-      // Switch with ".non_lazy_symbol_pointer" directive.
-      OutStreamer->SwitchSection(TLOFMacho.getNonLazySymbolPointerSection());
-      EmitAlignment(isPPC64 ? Align(8) : Align(4));
-
-      for (unsigned i = 0, e = Stubs.size(); i != e; ++i) {
-        // L_foo$stub:
-        OutStreamer->EmitLabel(Stubs[i].first);
-        //   .indirect_symbol _foo
-        MachineModuleInfoImpl::StubValueTy &MCSym = Stubs[i].second;
-        OutStreamer->EmitSymbolAttribute(MCSym.getPointer(),
-                                         MCSA_IndirectSymbol);
-
-        if (MCSym.getInt())
-          // External to current translation unit.
-          OutStreamer->EmitIntValue(0, isPPC64 ? 8 : 4 /*size*/);
-        else
-          // Internal to current translation unit.
-          //
-          // When we place the LSDA into the TEXT section, the type info
-          // pointers
-          // need to be indirect and pc-rel. We accomplish this by using NLPs.
-          // However, sometimes the types are local to the file. So we need to
-          // fill in the value for the NLP in those cases.
-          OutStreamer->EmitValue(
-              MCSymbolRefExpr::create(MCSym.getPointer(), OutContext),
-              isPPC64 ? 8 : 4 /*size*/);
-      }
-
-      Stubs.clear();
-      OutStreamer->AddBlankLine();
-    }
-  }
-
-  // Funny Darwin hack: This flag tells the linker that no global symbols
-  // contain code that falls through to other global symbols (e.g. the obvious
-  // implementation of multiple entry points).  If this doesn't occur, the
-  // linker can safely perform dead code stripping.  Since LLVM never generates
-  // code that does this, it is always safe to set.
-  OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
-
-  return AsmPrinter::doFinalization(M);
-}
-
 void PPCAIXAsmPrinter::SetupMachineFunction(MachineFunction &MF) {
   // Get the function descriptor symbol.
   CurrentFnDescSym = getSymbol(&MF.getFunction());
@@ -1957,8 +1795,6 @@ PPCAIXAsmPrinter::getMCSymbolForTOCPseudoMO(const MachineOperand &MO) {
 static AsmPrinter *
 createPPCAsmPrinterPass(TargetMachine &tm,
                         std::unique_ptr<MCStreamer> &&Streamer) {
-  if (tm.getTargetTriple().isMacOSX())
-    return new PPCDarwinAsmPrinter(tm, std::move(Streamer));
   if (tm.getTargetTriple().isOSAIX())
     return new PPCAIXAsmPrinter(tm, std::move(Streamer));