DWARF: Put all the pieces we have together and provide a single accessor to DIContext that provides line information when given an address.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139836 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/DebugInfo/DWARFContext.h b/lib/DebugInfo/DWARFContext.h
index 687e5fa..746a463 100644
--- a/lib/DebugInfo/DWARFContext.h
+++ b/lib/DebugInfo/DWARFContext.h
@@ -53,6 +53,9 @@
     return &CUs[index];
   }
 
+  /// Return the compile unit that includes an offset (relative to .debug_info).
+  DWARFCompileUnit *getCompileUnitForOffset(uint32_t offset);
+
   /// Get a pointer to the parsed DebugAbbrev object.
   const DWARFDebugAbbrev *getDebugAbbrev();
 
@@ -63,6 +66,8 @@
   const DWARFDebugLine::LineTable *
   getLineTableForCompileUnit(DWARFCompileUnit *cu);
 
+  virtual DILineInfo getLineInfoForAddress(uint64_t address);
+
   bool isLittleEndian() const { return IsLittleEndian; }
 
   virtual StringRef getInfoSection() = 0;