1 files changed, 30 insertions, 17 deletions

diff --git a/contrib/llvm/lib/MC/MCMachOStreamer.cpp b/contrib/llvm/lib/MC/MCMachOStreamer.cpp
index 53cd131..21f7571 100644
--- a/contrib/llvm/lib/MC/MCMachOStreamer.cpp
+++ b/contrib/llvm/lib/MC/MCMachOStreamer.cpp
@@ -60,6 +60,7 @@ public:
 
   /// state management
   void reset() override {
+    CreatedADWARFSection = false;
     HasSectionLabel.clear();
     MCObjectStreamer::reset();
   }
@@ -180,8 +181,6 @@ void MCMachOStreamer::EmitEHSymAttributes(const MCSymbol *Symbol,
 void MCMachOStreamer::EmitLabel(MCSymbol *Symbol) {
   assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
 
-  // isSymbolLinkerVisible uses the section.
-  AssignSection(Symbol, getCurrentSection().first);
   // We have to create a new fragment if this is an atom defining symbol,
   // fragments cannot span atoms.
   if (getAssembler().isSymbolLinkerVisible(*Symbol))
@@ -384,8 +383,6 @@ void MCMachOStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
   // FIXME: Darwin 'as' does appear to allow redef of a .comm by itself.
   assert(Symbol->isUndefined() && "Cannot define a symbol twice!");
 
-  AssignSection(Symbol, nullptr);
-
   getAssembler().registerSymbol(*Symbol);
   Symbol->setExternal(true);
   Symbol->setCommon(Size, ByteAlignment);
@@ -417,8 +414,6 @@ void MCMachOStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
   if (ByteAlignment != 1)
     new MCAlignFragment(ByteAlignment, 0, 0, ByteAlignment, Section);
 
-  AssignSection(Symbol, Section);
-
   MCFragment *F = new MCFillFragment(0, 0, Size, Section);
   Symbol->setFragment(F);
 
@@ -443,12 +438,11 @@ void MCMachOStreamer::EmitInstToData(const MCInst &Inst,
   SmallString<256> Code;
   raw_svector_ostream VecOS(Code);
   getAssembler().getEmitter().encodeInstruction(Inst, VecOS, Fixups, STI);
-  VecOS.flush();
 
   // Add the fixups and data.
-  for (unsigned i = 0, e = Fixups.size(); i != e; ++i) {
-    Fixups[i].setOffset(Fixups[i].getOffset() + DF->getContents().size());
-    DF->getFixups().push_back(Fixups[i]);
+  for (MCFixup &Fixup : Fixups) {
+    Fixup.setOffset(Fixup.getOffset() + DF->getContents().size());
+    DF->getFixups().push_back(Fixup);
   }
   DF->getContents().append(Code.begin(), Code.end());
 }
@@ -463,7 +457,8 @@ void MCMachOStreamer::FinishImpl() {
   // defining symbols.
   DenseMap<const MCFragment *, const MCSymbol *> DefiningSymbolMap;
   for (const MCSymbol &Symbol : getAssembler().symbols()) {
-    if (getAssembler().isSymbolLinkerVisible(Symbol) && Symbol.getFragment()) {
+    if (getAssembler().isSymbolLinkerVisible(Symbol) && Symbol.isInSection() &&
+        !Symbol.isVariable()) {
       // An atom defining symbol should never be internal to a fragment.
       assert(Symbol.getOffset() == 0 &&
              "Invalid offset in atom defining symbol!");
@@ -473,14 +468,12 @@ void MCMachOStreamer::FinishImpl() {
 
   // Set the fragment atom associations by tracking the last seen atom defining
   // symbol.
-  for (MCAssembler::iterator it = getAssembler().begin(),
-         ie = getAssembler().end(); it != ie; ++it) {
+  for (MCSection &Sec : getAssembler()) {
     const MCSymbol *CurrentAtom = nullptr;
-    for (MCSection::iterator it2 = it->begin(), ie2 = it->end(); it2 != ie2;
-         ++it2) {
-      if (const MCSymbol *Symbol = DefiningSymbolMap.lookup(it2))
+    for (MCFragment &Frag : Sec) {
+      if (const MCSymbol *Symbol = DefiningSymbolMap.lookup(&Frag))
         CurrentAtom = Symbol;
-      it2->setAtom(CurrentAtom);
+      Frag.setAtom(CurrentAtom);
     }
   }
 
@@ -493,6 +486,26 @@ MCStreamer *llvm::createMachOStreamer(MCContext &Context, MCAsmBackend &MAB,
                                       bool LabelSections) {
   MCMachOStreamer *S = new MCMachOStreamer(Context, MAB, OS, CE,
                                            DWARFMustBeAtTheEnd, LabelSections);
+  const Triple &TT = Context.getObjectFileInfo()->getTargetTriple();
+  if (TT.isOSDarwin()) {
+    unsigned Major, Minor, Update;
+    TT.getOSVersion(Major, Minor, Update);
+    // If there is a version specified, Major will be non-zero.
+    if (Major) {
+      MCVersionMinType VersionType;
+      if (TT.isWatchOS())
+        VersionType = MCVM_WatchOSVersionMin;
+      else if (TT.isTvOS())
+        VersionType = MCVM_TvOSVersionMin;
+      else if (TT.isMacOSX())
+        VersionType = MCVM_OSXVersionMin;
+      else {
+        assert(TT.isiOS() && "Must only be iOS platform left");
+        VersionType = MCVM_IOSVersionMin;
+      }
+      S->EmitVersionMin(VersionType, Major, Minor, Update);
+    }
+  }
   if (RelaxAll)
     S->getAssembler().setRelaxAll(true);
   return S;