3 files changed, 13 insertions, 7 deletions
diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h
index d190ea4..33def86 100644
--- a/include/llvm/MC/MCAsmInfo.h
+++ b/include/llvm/MC/MCAsmInfo.h
@@ -223,10 +223,6 @@ namespace llvm {
 
     //===--- Dwarf Emission Directives -----------------------------------===//
 
-    /// AbsoluteDebugSectionOffsets - True if we should emit abolute section
-    /// offsets for debug information.
-    bool AbsoluteDebugSectionOffsets;        // Defaults to false.
-
     /// HasLEB128 - True if target asm supports leb128 directives.
     bool HasLEB128;                          // Defaults to false.
 
@@ -385,9 +381,6 @@ namespace llvm {
     MCSymbolAttr getProtectedVisibilityAttr() const {
       return ProtectedVisibilityAttr;
     }
-    bool isAbsoluteDebugSectionOffsets() const {
-      return AbsoluteDebugSectionOffsets;
-    }
     bool hasLEB128() const {
       return HasLEB128;
     }
diff --git a/include/llvm/MC/MCSection.h b/include/llvm/MC/MCSection.h
index 4a1c46c..e9c19fc 100644
--- a/include/llvm/MC/MCSection.h
+++ b/include/llvm/MC/MCSection.h
@@ -39,6 +39,14 @@ namespace llvm {
     
     virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
                                       raw_ostream &OS) const = 0;
+
+    /// isBaseAddressKnownZero - Return true if we know that this section will
+    /// get a base address of zero.  In cases where we know that this is true we
+    /// can emit section offsets as direct references to avoid a subtraction
+    /// from the base of the section, saving a relocation.
+    virtual bool isBaseAddressKnownZero() const {
+      return false;
+    }
   };
 
   class MCSectionCOFF : public MCSection {
diff --git a/include/llvm/MC/MCSectionELF.h b/include/llvm/MC/MCSectionELF.h
index cdd2f73..e550cd2 100644
--- a/include/llvm/MC/MCSectionELF.h
+++ b/include/llvm/MC/MCSectionELF.h
@@ -172,6 +172,11 @@ public:
   virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
                                     raw_ostream &OS) const;
   
+  /// isBaseAddressKnownZero - We know that non-allocatable sections (like
+  /// debug info) have a base of zero.
+  virtual bool isBaseAddressKnownZero() const {
+    return (getFlags() & SHF_ALLOC) == 0;
+  }
   
   /// PrintTargetSpecificSectionFlags - Targets that define their own
   /// MCSectionELF subclasses with target specific section flags should