ARM: put extern __thread stubs in a special section.

The linker needs to know that the symbols are thread-local to do its job
properly.

llvm-svn: 267473

1 files changed, 18 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
index 20c97e9835c..6d0608f9baa 100644
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -527,6 +527,19 @@ void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) {
       OutStreamer->AddBlankLine();
     }
 
+    Stubs = MMIMacho.GetThreadLocalGVStubList();
+    if (!Stubs.empty()) {
+      // Switch with ".non_lazy_symbol_pointer" directive.
+      OutStreamer->SwitchSection(TLOFMacho.getThreadLocalPointerSection());
+      EmitAlignment(2);
+
+      for (auto &Stub : Stubs)
+        emitNonLazySymbolPointer(*OutStreamer, Stub.first, Stub.second);
+
+      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
@@ -891,8 +904,11 @@ MCSymbol *ARMAsmPrinter::GetARMGVSymbol(const GlobalValue *GV,
     MachineModuleInfoMachO &MMIMachO =
       MMI->getObjFileInfo<MachineModuleInfoMachO>();
     MachineModuleInfoImpl::StubValueTy &StubSym =
-      GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym)
-                                : MMIMachO.getGVStubEntry(MCSym);
+        GV->isThreadLocal()
+            ? MMIMachO.getThreadLocalGVStubEntry(MCSym)
+            : (GV->hasHiddenVisibility() ? MMIMachO.getHiddenGVStubEntry(MCSym)
+                                         : MMIMachO.getGVStubEntry(MCSym));
+
     if (!StubSym.getPointer())
       StubSym = MachineModuleInfoImpl::StubValueTy(getSymbol(GV),
                                                    !GV->hasInternalLinkage());