add a new MachineModuleInfoMachO class, which is the per-module

stuff common across all macho targets.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82018 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineModuleInfoImpls.h

@@ -0,0 +1,78 @@
+//===-- llvm/CodeGen/MachineModuleInfoImpls.h -------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines object-file format specific implementations of
+// MachineModuleInfoImpl.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H
+#define LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H
+
+#include "llvm/CodeGen/MachineModuleInfo.h"
+
+namespace llvm {
+  class MCSymbol;
+  
+  /// MachineModuleInfoMachO - This is a MachineModuleInfoImpl implementation
+  /// for MachO targets.
+  class MachineModuleInfoMachO : public MachineModuleInfoImpl {
+    /// FnStubs - Darwin '$stub' stubs.  The key is something like "Lfoo$stub",
+    /// the value is something like "_foo".
+    DenseMap<const MCSymbol*, const MCSymbol*> FnStubs;
+    
+    /// GVStubs - Darwin '$non_lazy_ptr' stubs.  The key is something like
+    /// "Lfoo$non_lazy_ptr", the value is something like "_foo".
+    DenseMap<const MCSymbol*, const MCSymbol*> GVStubs;
+    
+    /// HiddenGVStubs - Darwin '$non_lazy_ptr' stubs.  The key is something like
+    /// "Lfoo$non_lazy_ptr", the value is something like "_foo".  Unlike GVStubs
+    /// these are for things with hidden visibility.
+    DenseMap<const MCSymbol*, const MCSymbol*> HiddenGVStubs;
+    
+    virtual void Anchor();  // Out of line virtual method.
+  public:
+    
+    const MCSymbol *&getFnStubEntry(const MCSymbol *Sym) {
+      assert(Sym && "Key cannot be null");
+      return FnStubs[Sym];
+    }
+
+    const MCSymbol *&getGVStubsEntry(const MCSymbol *Sym) {
+      assert(Sym && "Key cannot be null");
+      return GVStubs[Sym];
+    }
+
+    const MCSymbol *&getHiddenGVStubsEntry(const MCSymbol *Sym) {
+      assert(Sym && "Key cannot be null");
+      return HiddenGVStubs[Sym];
+    }
+    
+    /// Accessor methods to return the set of stubs in sorted order.
+    typedef std::vector<std::pair<const MCSymbol*, const MCSymbol*> >
+      SymbolListTy;
+    
+    SymbolListTy GetFnStubList() const {
+      return GetSortedStubs(FnStubs);
+    }
+    SymbolListTy GetGVStubList() const {
+      return GetSortedStubs(GVStubs);
+    }
+    SymbolListTy GetHiddenGVStubList() const {
+      return GetSortedStubs(HiddenGVStubs);
+    }
+    
+  private:
+    static SymbolListTy
+    GetSortedStubs(const DenseMap<const MCSymbol*, const MCSymbol*> &Map);
+  };
+  
+} // end namespace llvm
+
+#endif